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Gene Information

Gene symbol: HNF4A

Gene name: hepatocyte nuclear factor 4, alpha

HGNC ID: 5024

Synonyms: NR2A1, HNF4

Related Genes

# Gene Symbol Number of hits
1 ABCC8 1 hits
2 ABL2 1 hits
3 ADA 1 hits
4 AKT1 1 hits
5 AKT2 1 hits
6 ALDOB 1 hits
7 AP3S2 1 hits
8 APOA4 1 hits
9 APOB 1 hits
10 APOC2 1 hits
11 APOC3 1 hits
12 APOM 1 hits
13 BRCA2 1 hits
14 C2orf28 1 hits
15 CAT 1 hits
16 CDH1 1 hits
17 CDH17 1 hits
18 CDH22 1 hits
19 CDKN1A 1 hits
20 CDX1 1 hits
21 CEBPA 1 hits
22 CEBPB 1 hits
23 CEL 1 hits
24 CP 1 hits
25 CPN2 1 hits
26 CRABP2 1 hits
27 CREB1 1 hits
28 CREBBP 1 hits
29 CREM 1 hits
30 CSNK2A1 1 hits
31 CTGF 1 hits
32 CTNNB1 1 hits
33 CYP3A 1 hits
34 CYP7A1 1 hits
35 DBI 1 hits
36 DR1 1 hits
37 EBP 1 hits
38 ELMO2 1 hits
39 EP300 1 hits
40 ESRRB 1 hits
41 FABP1 1 hits
42 FABP2 1 hits
43 FOXA1 1 hits
44 FOXA2 1 hits
45 FOXA3 1 hits
46 FOXM1 1 hits
47 FOXO1 1 hits
48 FZD1 1 hits
49 G6PC 1 hits
50 GAD1 1 hits
51 GATA4 1 hits
52 GCG 1 hits
53 GCK 1 hits
54 GCKR 1 hits
55 GIP 1 hits
56 GK 1 hits
57 GLP1R 1 hits
58 GLUD1 1 hits
59 GNA12 1 hits
60 GNAI2 1 hits
61 GPR39 1 hits
62 GRB14 1 hits
63 GSTCD 1 hits
64 HADH 1 hits
65 HMG20A 1 hits
66 HMX1 1 hits
67 HNF1A 1 hits
68 HNF1B 1 hits
69 HNF4G 1 hits
70 HSPA8 1 hits
71 IDDM2 1 hits
72 IFNGR2 1 hits
73 IGF2 1 hits
74 IGFBP1 1 hits
75 IL15 1 hits
76 INS 1 hits
77 INSM1 1 hits
78 INSR 1 hits
79 IRS1 1 hits
80 IRS2 1 hits
81 ISL1 1 hits
82 JUN 1 hits
83 JUP 1 hits
84 KCNJ1 1 hits
85 KCNJ11 1 hits
86 KCNJ3 1 hits
87 KLF11 1 hits
88 KLRG1 1 hits
89 LAMB1 1 hits
90 LBP 1 hits
91 LEP 1 hits
92 LPAL2 1 hits
93 MAPK1 1 hits
94 MAPK8 1 hits
95 MEN1 1 hits
96 MNX1 1 hits
97 MYBL2 1 hits
98 MYC 1 hits
99 MYEF2 1 hits
100 NAMPT 1 hits
101 NCOA1 1 hits
102 NCOA2 1 hits
103 NEUROD1 1 hits
104 NEUROD4 1 hits
105 NEUROG3 1 hits
106 NGF 1 hits
107 NKX2-2 1 hits
108 NKX6-1 1 hits
109 NKX6-2 1 hits
110 NPY 1 hits
111 NR0B2 1 hits
112 NR1H3 1 hits
113 NR1I2 1 hits
114 NR2F2 1 hits
115 NR3C1 1 hits
116 NR6A1 1 hits
117 ONECUT1 1 hits
118 PAK6 1 hits
119 PAX4 1 hits
120 PAX6 1 hits
121 PC 1 hits
122 PCBD1 1 hits
123 PCK2 1 hits
124 PDK4 1 hits
125 PDLIM5 1 hits
126 PDX1 1 hits
127 PEPD 1 hits
128 PKHD1 1 hits
129 PKLR 1 hits
130 POMC 1 hits
131 PPARA 1 hits
132 PPARG 1 hits
133 PPARGC1A 1 hits
134 PPARGC1B 1 hits
135 PPY 1 hits
136 PRKAA1 1 hits
137 PRKAR2A 1 hits
138 PSMD4 1 hits
139 PSMD9 1 hits
140 PTF1A 1 hits
141 PTPN6 1 hits
142 RAB40B 1 hits
143 RIPK3 1 hits
144 RPS6KA6 1 hits
145 RXRA 1 hits
146 SERPINA3 1 hits
147 SERPINE1 1 hits
148 SHBG 1 hits
149 SLC12A5 1 hits
150 SLC13A3 1 hits
151 SLC16A1 1 hits
152 SLC2A1 1 hits
153 SLC2A2 1 hits
154 SLC37A4 1 hits
155 SMAD3 1 hits
156 SP1 1 hits
157 SREBF2 1 hits
158 SST 1 hits
159 ST5 1 hits
160 ST6GAL1 1 hits
161 TCF7 1 hits
162 TCF7L1 1 hits
163 TCF7L2 1 hits
164 TF 1 hits
165 TNF 1 hits
166 TP53 1 hits
167 UCP2 1 hits
168 UGT2B7 1 hits
169 UMOD 1 hits
170 USF1 1 hits
171 VPS26A 1 hits
172 WFS1 1 hits
173 ZNHIT3 1 hits

Related Sentences

# PMID Sentence
1 1446805 Recently, linkage between the ADA gene locus and MODY, a subtype of NIDDM, has been reported.
2 1628771 No linkage to ADA or GLUT2 genes in two families.
3 1628771 We studied the linkage of MODY to two loci: ADA and GLUT2 in two large pedigrees with nonradioactive microsatellite polymorphic systems.
4 1628771 Formal linkage analysis excluded a tight linkage between ADA and MODY with a LOD score of -5.82 and -2.24 at a recombination fraction of 0.01 in the two families.
5 1628771 The LOD scores for GLUT2 were -7.79 and -1.9 at a recombination fraction of 0.001 in the two families, thus providing evidence against the involvement of GLUT2 in MODY.
6 1628771 No linkage to ADA or GLUT2 genes in two families.
7 1628771 We studied the linkage of MODY to two loci: ADA and GLUT2 in two large pedigrees with nonradioactive microsatellite polymorphic systems.
8 1628771 Formal linkage analysis excluded a tight linkage between ADA and MODY with a LOD score of -5.82 and -2.24 at a recombination fraction of 0.01 in the two families.
9 1628771 The LOD scores for GLUT2 were -7.79 and -1.9 at a recombination fraction of 0.001 in the two families, thus providing evidence against the involvement of GLUT2 in MODY.
10 1779465 Using the strategy of the second approach, Bell et al. recently reported that the gene responsible for MODY (maturity-onset diabetes of the young) is tightly linked to the adenosine deaminase gene on chromosome 20q.
11 1899928 Maturity-onset diabetes of the young (MODY) is a form of non-insulin-dependent diabetes mellitus characterized by an early age of onset, usually before 25 years of age, and an autosomal dominant mode of inheritance.
12 1899928 A DNA polymorphism in the adenosine deaminase gene (ADA) on the long arm of chromosome 20 was found to cosegregate with MODY.
13 1899928 The maximum logarithm of odds (lod score) for linkage between MODY and ADA was 5.25 at a recombination fraction of 0.00.
14 1899928 These results indicate that the odds are greater than 178,000:1 that the gene responsible for MODY in this family is tightly linked to the ADA gene on chromosome 20q.
15 1899928 Maturity-onset diabetes of the young (MODY) is a form of non-insulin-dependent diabetes mellitus characterized by an early age of onset, usually before 25 years of age, and an autosomal dominant mode of inheritance.
16 1899928 A DNA polymorphism in the adenosine deaminase gene (ADA) on the long arm of chromosome 20 was found to cosegregate with MODY.
17 1899928 The maximum logarithm of odds (lod score) for linkage between MODY and ADA was 5.25 at a recombination fraction of 0.00.
18 1899928 These results indicate that the odds are greater than 178,000:1 that the gene responsible for MODY in this family is tightly linked to the ADA gene on chromosome 20q.
19 1899928 Maturity-onset diabetes of the young (MODY) is a form of non-insulin-dependent diabetes mellitus characterized by an early age of onset, usually before 25 years of age, and an autosomal dominant mode of inheritance.
20 1899928 A DNA polymorphism in the adenosine deaminase gene (ADA) on the long arm of chromosome 20 was found to cosegregate with MODY.
21 1899928 The maximum logarithm of odds (lod score) for linkage between MODY and ADA was 5.25 at a recombination fraction of 0.00.
22 1899928 These results indicate that the odds are greater than 178,000:1 that the gene responsible for MODY in this family is tightly linked to the ADA gene on chromosome 20q.
23 1899928 Maturity-onset diabetes of the young (MODY) is a form of non-insulin-dependent diabetes mellitus characterized by an early age of onset, usually before 25 years of age, and an autosomal dominant mode of inheritance.
24 1899928 A DNA polymorphism in the adenosine deaminase gene (ADA) on the long arm of chromosome 20 was found to cosegregate with MODY.
25 1899928 The maximum logarithm of odds (lod score) for linkage between MODY and ADA was 5.25 at a recombination fraction of 0.00.
26 1899928 These results indicate that the odds are greater than 178,000:1 that the gene responsible for MODY in this family is tightly linked to the ADA gene on chromosome 20q.
27 3289993 Insulin action and insulin secretion in identical twins with MODY.
28 3289993 Differences in insulin secretion pattern and/or insulin action between the twins is supposed to be responsible for development of hyperglycemia in MODY.
29 3289993 On the other hand, identical defects in insulin secretion and action in the twins may point to the primary genetic defect in MODY.
30 3289993 Insulin action and insulin secretion in identical twins with MODY.
31 3289993 Differences in insulin secretion pattern and/or insulin action between the twins is supposed to be responsible for development of hyperglycemia in MODY.
32 3289993 On the other hand, identical defects in insulin secretion and action in the twins may point to the primary genetic defect in MODY.
33 3289993 Insulin action and insulin secretion in identical twins with MODY.
34 3289993 Differences in insulin secretion pattern and/or insulin action between the twins is supposed to be responsible for development of hyperglycemia in MODY.
35 3289993 On the other hand, identical defects in insulin secretion and action in the twins may point to the primary genetic defect in MODY.
36 3882370 Pancreatic beta cell responses were measured in obese and nonobese maturity-onset diabetes of the young (MODY) patients by estimating serum immunoreactive insulin (IRI) and C-peptide (CP) during oral glucose tolerance testing (OGTT).
37 3882370 This is suggestive of altered metabolic fates of insulin and CP in the MODY patients.
38 3882370 Pancreatic beta cell responses were measured in obese and nonobese maturity-onset diabetes of the young (MODY) patients by estimating serum immunoreactive insulin (IRI) and C-peptide (CP) during oral glucose tolerance testing (OGTT).
39 3882370 This is suggestive of altered metabolic fates of insulin and CP in the MODY patients.
40 3907232 Ultrasonography was performed in three groups of young diabetics in the tropics, namely MODY, IDDM and tropical pancreatic diabetes (TPD).
41 3907232 MODY and IDDM patients did not show any significant changes except a slight reduction in size of the gland.
42 3907232 Ultrasonography was performed in three groups of young diabetics in the tropics, namely MODY, IDDM and tropical pancreatic diabetes (TPD).
43 3907232 MODY and IDDM patients did not show any significant changes except a slight reduction in size of the gland.
44 7508874 Maturity-onset diabetes of the young (MODY) is a model for genetic studies of non-insulin-dependent diabetes mellitus.
45 7508874 We have identified 15 MODY families in which diabetes is not the result of mutations in the glucokinase gene.
46 7508874 Nine other candidate genes potentially implicated in insulin secretion or insulin action have been tested for linkage with MODY in these families, including glucokinase regulatory protein, hexokinase II, insulin receptor substrate 1, fatty acid-binding protein 2, glucagon-like peptide-1 receptor, apolipoprotein C-II, glycogen synthase, adenosine deaminase (a marker for the MODY gene on chromosome 20), and phosphoenolpyruvate carboxykinase.
47 7508874 Maturity-onset diabetes of the young (MODY) is a model for genetic studies of non-insulin-dependent diabetes mellitus.
48 7508874 We have identified 15 MODY families in which diabetes is not the result of mutations in the glucokinase gene.
49 7508874 Nine other candidate genes potentially implicated in insulin secretion or insulin action have been tested for linkage with MODY in these families, including glucokinase regulatory protein, hexokinase II, insulin receptor substrate 1, fatty acid-binding protein 2, glucagon-like peptide-1 receptor, apolipoprotein C-II, glycogen synthase, adenosine deaminase (a marker for the MODY gene on chromosome 20), and phosphoenolpyruvate carboxykinase.
50 7508874 Maturity-onset diabetes of the young (MODY) is a model for genetic studies of non-insulin-dependent diabetes mellitus.
51 7508874 We have identified 15 MODY families in which diabetes is not the result of mutations in the glucokinase gene.
52 7508874 Nine other candidate genes potentially implicated in insulin secretion or insulin action have been tested for linkage with MODY in these families, including glucokinase regulatory protein, hexokinase II, insulin receptor substrate 1, fatty acid-binding protein 2, glucagon-like peptide-1 receptor, apolipoprotein C-II, glycogen synthase, adenosine deaminase (a marker for the MODY gene on chromosome 20), and phosphoenolpyruvate carboxykinase.
53 7589847 Maturity-onset diabetes of the young (MODY) is a heterogeneous disorder that appears to be characterized by a primary defect in insulin secretion.
54 7589847 Mutations in an unknown locus (MODY1) on chromosome 20 and the glucokinase gene (MODY2) on chromosome 7 can cause this form of non-insulin-dependent diabetes.
55 7589847 Maturity-onset diabetes of the young (MODY) is a heterogeneous disorder that appears to be characterized by a primary defect in insulin secretion.
56 7589847 Mutations in an unknown locus (MODY1) on chromosome 20 and the glucokinase gene (MODY2) on chromosome 7 can cause this form of non-insulin-dependent diabetes.
57 7789637 Subjects who have maturity-onset diabetes of the young (MODY) due to mutations in the glucokinase gene demonstrate different patterns of altered insulin secretion when compared with subjects who have mutations in the MODY1 gene on chromosome 20.
58 7789637 In contrast, mutations in the MODY1 gene are associated with an inability to increase insulin secretion as the plasma glucose concentration increases above 7-8 mmol/l and the normal priming effect of glucose on insulin secretion is lost.
59 7789637 These characteristics of the dose-response relationships between glucose and insulin secretion result in a more severe degree of hyperglycemia than observed in subjects with glucokinase mutations, and these subjects more frequently need insulin treatment.
60 7789637 Subjects who have maturity-onset diabetes of the young (MODY) due to mutations in the glucokinase gene demonstrate different patterns of altered insulin secretion when compared with subjects who have mutations in the MODY1 gene on chromosome 20.
61 7789637 In contrast, mutations in the MODY1 gene are associated with an inability to increase insulin secretion as the plasma glucose concentration increases above 7-8 mmol/l and the normal priming effect of glucose on insulin secretion is lost.
62 7789637 These characteristics of the dose-response relationships between glucose and insulin secretion result in a more severe degree of hyperglycemia than observed in subjects with glucokinase mutations, and these subjects more frequently need insulin treatment.
63 7789636 Altered insulin secretory responses to glucose in subjects with a mutation in the MODY1 gene on chromosome 20.
64 7789636 This study was undertaken to test the hypothesis that the diabetes susceptibility gene on chromosome 20q12 responsible for maturity-onset diabetes of the young (MODY) in a large kindred, the RW family, results in characteristic alterations in the dose-response relationships between plasma glucose concentration and insulin secretion rate (ISR) that differentiate this form of MODY from MODY in subjects with glucokinase mutations.
65 7789636 Altered insulin secretory responses to glucose in subjects with a mutation in the MODY1 gene on chromosome 20.
66 7789636 This study was undertaken to test the hypothesis that the diabetes susceptibility gene on chromosome 20q12 responsible for maturity-onset diabetes of the young (MODY) in a large kindred, the RW family, results in characteristic alterations in the dose-response relationships between plasma glucose concentration and insulin secretion rate (ISR) that differentiate this form of MODY from MODY in subjects with glucokinase mutations.
67 7951673 So far, two MODY susceptibility loci have been reported, one unknown gene on chromosome 20q, and glucokinase on chromosome 7q.
68 7951673 Glucokinase mutations appear to be the most common cause of MODY in the European population, being found in 60% of the families investigated.
69 7951673 So far, two MODY susceptibility loci have been reported, one unknown gene on chromosome 20q, and glucokinase on chromosome 7q.
70 7951673 Glucokinase mutations appear to be the most common cause of MODY in the European population, being found in 60% of the families investigated.
71 8035658 MODY is also linked to the glucokinase gene on chromosome 7p and many different mutations associated with MODY have been identified in this gene.
72 8035658 MODY due to mutations in the glucokinase gene is a relatively mild form of diabetes with mild fasting hyperglycemia and IGT in the majority.
73 8035658 Clinical studies indicate that the genetic or primary defect in MODY is characterized by deranged and deficient insulin secretion and not by insulin resistance and that there are quantitative and qualitative differences in insulin secretory defects which differentiate subjects with MODY due to glucokinase mutations from those with mutations in the gene on chromosome 20q.
74 8035658 MODY is also linked to the glucokinase gene on chromosome 7p and many different mutations associated with MODY have been identified in this gene.
75 8035658 MODY due to mutations in the glucokinase gene is a relatively mild form of diabetes with mild fasting hyperglycemia and IGT in the majority.
76 8035658 Clinical studies indicate that the genetic or primary defect in MODY is characterized by deranged and deficient insulin secretion and not by insulin resistance and that there are quantitative and qualitative differences in insulin secretory defects which differentiate subjects with MODY due to glucokinase mutations from those with mutations in the gene on chromosome 20q.
77 8035658 MODY is also linked to the glucokinase gene on chromosome 7p and many different mutations associated with MODY have been identified in this gene.
78 8035658 MODY due to mutations in the glucokinase gene is a relatively mild form of diabetes with mild fasting hyperglycemia and IGT in the majority.
79 8035658 Clinical studies indicate that the genetic or primary defect in MODY is characterized by deranged and deficient insulin secretion and not by insulin resistance and that there are quantitative and qualitative differences in insulin secretory defects which differentiate subjects with MODY due to glucokinase mutations from those with mutations in the gene on chromosome 20q.
80 8168652 Six mutations in the glucokinase gene identified in MODY by using a nonradioactive sensitive screening technique.
81 8168652 We have reported that 56% of French families with maturity-onset diabetes of the young (MODY) carry a mutation in the glucokinase gene (GCK).
82 8168652 All six families carrying a mutation in GCK were typical MODY and most of their affected members had a mild form of diabetes.
83 8168652 Six mutations in the glucokinase gene identified in MODY by using a nonradioactive sensitive screening technique.
84 8168652 We have reported that 56% of French families with maturity-onset diabetes of the young (MODY) carry a mutation in the glucokinase gene (GCK).
85 8168652 All six families carrying a mutation in GCK were typical MODY and most of their affected members had a mild form of diabetes.
86 8168652 Six mutations in the glucokinase gene identified in MODY by using a nonradioactive sensitive screening technique.
87 8168652 We have reported that 56% of French families with maturity-onset diabetes of the young (MODY) carry a mutation in the glucokinase gene (GCK).
88 8168652 All six families carrying a mutation in GCK were typical MODY and most of their affected members had a mild form of diabetes.
89 8621016 Thus, mutations involving the genes for GIRK1 or FAD-glycerophosphate dehydrogenase are unlikely to cause MODY, and a common mutation in either gene is unlikely to contribute to NIDDM in whites.
90 8632993 We have generated a physical map of human chromosome bands 20q11.2-20q13.1, a region containing a gene involved in the development of one form of early-onset, non-insulin-dependent diabetes mellitus, MODY1, as well as a putative myeloid tumor suppressor gene.
91 8866553 Altered insulin secretory responses to glucose in diabetic and nondiabetic subjects with mutations in the diabetes susceptibility gene MODY3 on chromosome 12.
92 8866553 One form of maturity-onset diabetes of the young (MODY) results from mutations in a gene, designated MODY3, located on chromosome 12 in band q24.
93 8866553 The present study was undertaken to define the interactions between glucose and insulin secretion rate (ISR) in subjects with mutations in MODY3.
94 8866553 Of the 13 MODY3 subjects, six subjects with normal fasting glucose and glycosylated hemoglobin and seven overtly diabetic subjects were studied as were six nondiabetic control subjects.
95 8866553 Basal glucose levels were higher and insulin levels were lower in MODY3 subjects with diabetes compared with nondiabetic subjects or with normal healthy control subjects.
96 8866553 Administration of glucose by intravenous infusion for 42 h resulted in a significant increase in the amount of insulin secreted over the 5-9 mmol/l glucose concentration range in the control subjects and nondiabetic MODY3 subjects (by 38 and 35%, respectively), but no significant change was observed in the diabetic MODY3 subjects.
97 8866553 In conclusion, in nondiabetic MODY3 subjects insulin secretion demonstrates a diminished ability to respond when blood glucose exceeds 8 mmol/l.
98 8866553 The defect in insulin secretion in the nondiabetic MODY3 subjects differs from that reported previously in nondiabetic MODY1 or mildly diabetic MODY2 subjects.
99 8866553 Altered insulin secretory responses to glucose in diabetic and nondiabetic subjects with mutations in the diabetes susceptibility gene MODY3 on chromosome 12.
100 8866553 One form of maturity-onset diabetes of the young (MODY) results from mutations in a gene, designated MODY3, located on chromosome 12 in band q24.
101 8866553 The present study was undertaken to define the interactions between glucose and insulin secretion rate (ISR) in subjects with mutations in MODY3.
102 8866553 Of the 13 MODY3 subjects, six subjects with normal fasting glucose and glycosylated hemoglobin and seven overtly diabetic subjects were studied as were six nondiabetic control subjects.
103 8866553 Basal glucose levels were higher and insulin levels were lower in MODY3 subjects with diabetes compared with nondiabetic subjects or with normal healthy control subjects.
104 8866553 Administration of glucose by intravenous infusion for 42 h resulted in a significant increase in the amount of insulin secreted over the 5-9 mmol/l glucose concentration range in the control subjects and nondiabetic MODY3 subjects (by 38 and 35%, respectively), but no significant change was observed in the diabetic MODY3 subjects.
105 8866553 In conclusion, in nondiabetic MODY3 subjects insulin secretion demonstrates a diminished ability to respond when blood glucose exceeds 8 mmol/l.
106 8866553 The defect in insulin secretion in the nondiabetic MODY3 subjects differs from that reported previously in nondiabetic MODY1 or mildly diabetic MODY2 subjects.
107 8945471 The disease maturity-onset diabetes of the young (MODY) is a genetically heterogeneous monogenic form of non-insulin-dependent (type 2) diabetes mellitus (NIDDM), characterized by early onset, usually before 25 years of age and often in adolescence or childhood, and by autosomal dominant inheritance.
108 8945471 Clinical studies have shown that prediabetic MODY subjects have normal insulin sensitivity but suffer from a defect in glucose-stimulated insulin secretion, suggesting that pancreatic beta-cell dysfunction rather than insulin resistance is the primary defect in this disorder.
109 8945471 Linkage studies have localized the genes that are mutated in MODY on human chromosomes 20 (MODY1), 7 (MODY2) and 12 (MODY3), with MODY2 and MODY3 being allelic with the genes encoding glucokinase, a key regulator of insulin secretion, and hepatocyte nuclear factor-1alpha (HNF-1alpha), a transcription factor involved in tissue-specific regulation of liver genes but also expressed in pancreatic islets, insulinoma cells and other tissues.
110 8945471 The disease maturity-onset diabetes of the young (MODY) is a genetically heterogeneous monogenic form of non-insulin-dependent (type 2) diabetes mellitus (NIDDM), characterized by early onset, usually before 25 years of age and often in adolescence or childhood, and by autosomal dominant inheritance.
111 8945471 Clinical studies have shown that prediabetic MODY subjects have normal insulin sensitivity but suffer from a defect in glucose-stimulated insulin secretion, suggesting that pancreatic beta-cell dysfunction rather than insulin resistance is the primary defect in this disorder.
112 8945471 Linkage studies have localized the genes that are mutated in MODY on human chromosomes 20 (MODY1), 7 (MODY2) and 12 (MODY3), with MODY2 and MODY3 being allelic with the genes encoding glucokinase, a key regulator of insulin secretion, and hepatocyte nuclear factor-1alpha (HNF-1alpha), a transcription factor involved in tissue-specific regulation of liver genes but also expressed in pancreatic islets, insulinoma cells and other tissues.
113 8945471 The disease maturity-onset diabetes of the young (MODY) is a genetically heterogeneous monogenic form of non-insulin-dependent (type 2) diabetes mellitus (NIDDM), characterized by early onset, usually before 25 years of age and often in adolescence or childhood, and by autosomal dominant inheritance.
114 8945471 Clinical studies have shown that prediabetic MODY subjects have normal insulin sensitivity but suffer from a defect in glucose-stimulated insulin secretion, suggesting that pancreatic beta-cell dysfunction rather than insulin resistance is the primary defect in this disorder.
115 8945471 Linkage studies have localized the genes that are mutated in MODY on human chromosomes 20 (MODY1), 7 (MODY2) and 12 (MODY3), with MODY2 and MODY3 being allelic with the genes encoding glucokinase, a key regulator of insulin secretion, and hepatocyte nuclear factor-1alpha (HNF-1alpha), a transcription factor involved in tissue-specific regulation of liver genes but also expressed in pancreatic islets, insulinoma cells and other tissues.
116 8945470 MODY genes have been localized to chromosomes 7, 12 and 20 (refs 5, 7, 8) and clinical studies indicate that mutations in these genes are associated with abnormal patterns of glucose-stimulated insulin secretion.
117 8945470 HNF-1alpha is a transcription factor that helps in the tissue-specific regulation of the expression of several liver genes and also functions as a weak transactivator of the rat insulin-I gene.
118 9029679 Hepatocyte nuclear factor-4 alpha gene mutations in Japanese non-insulin dependent diabetes mellitus (NIDDM) patients.
119 9032114 We have also identified the mutation in the HNF-1alpha gene in the Jutland pedigree, one of the original MODY pedigrees reported in the literature, as being a T-->G substitution in codon 241, resulting in the replacement of a conserved Cys by Gly (C241G).
120 9075818 MODY families for mutations in the coding region of the HNF-1alpha gene.
121 9075818 We have demonstrated that mutations in the HNF-1alpha gene are a common cause of MODY in U.K. families and result in early onset NIDDM with a progressive clinical course.
122 9075818 MODY families for mutations in the coding region of the HNF-1alpha gene.
123 9075818 We have demonstrated that mutations in the HNF-1alpha gene are a common cause of MODY in U.K. families and result in early onset NIDDM with a progressive clinical course.
124 9075819 The primary objective of the present study was to search for genetic variation in the HNF-1alpha gene in nine nonrelated Danish Caucasian subjects with MODY.
125 9075819 Direct sequencing of the coding region and intron-exon boundaries of the HNF-1alpha gene revealed 2 novel and 1 previously reported missense mutations and 2 novel frameshift mutations in five of nine MODY subjects.
126 9075819 In conclusion, 1) mutations in the HNF-1alpha gene are common in Danish Caucasian MODY patients, and 2) early stages in the pathogenesis of MODY3 caused by the P447L mutation may be characterized by a hyperexcitability of beta-cells to intravenous secretagogues.
127 9075819 The primary objective of the present study was to search for genetic variation in the HNF-1alpha gene in nine nonrelated Danish Caucasian subjects with MODY.
128 9075819 Direct sequencing of the coding region and intron-exon boundaries of the HNF-1alpha gene revealed 2 novel and 1 previously reported missense mutations and 2 novel frameshift mutations in five of nine MODY subjects.
129 9075819 In conclusion, 1) mutations in the HNF-1alpha gene are common in Danish Caucasian MODY patients, and 2) early stages in the pathogenesis of MODY3 caused by the P447L mutation may be characterized by a hyperexcitability of beta-cells to intravenous secretagogues.
130 9075819 The primary objective of the present study was to search for genetic variation in the HNF-1alpha gene in nine nonrelated Danish Caucasian subjects with MODY.
131 9075819 Direct sequencing of the coding region and intron-exon boundaries of the HNF-1alpha gene revealed 2 novel and 1 previously reported missense mutations and 2 novel frameshift mutations in five of nine MODY subjects.
132 9075819 In conclusion, 1) mutations in the HNF-1alpha gene are common in Danish Caucasian MODY patients, and 2) early stages in the pathogenesis of MODY3 caused by the P447L mutation may be characterized by a hyperexcitability of beta-cells to intravenous secretagogues.
133 9097962 Maturity-onset diabetes of the young (MODY) is a genetically heterogeneous subtype of non-insulin-dependent diabetes mellitus (NIDDM) characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
134 9097962 Recent studies have shown that mutations in the two functionally related transcription factors, hepatocyte nuclear factor 4 alpha (HNF-4alpha) and hepatocyte nuclear factor 1 alpha (HNF-1alpha) are associated with the MODY1 and MODY3 forms of diabetes respectively, whereas mutations in the enzyme glucokinase are the cause of the MODY2 form.
135 9097962 We have examined 10 unrelated Caucasian families in which MODY/NIDDM co-segregated with markers for MODY3 for mutations in the HNF-1alpha gene (TCF1).
136 9097962 Maturity-onset diabetes of the young (MODY) is a genetically heterogeneous subtype of non-insulin-dependent diabetes mellitus (NIDDM) characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
137 9097962 Recent studies have shown that mutations in the two functionally related transcription factors, hepatocyte nuclear factor 4 alpha (HNF-4alpha) and hepatocyte nuclear factor 1 alpha (HNF-1alpha) are associated with the MODY1 and MODY3 forms of diabetes respectively, whereas mutations in the enzyme glucokinase are the cause of the MODY2 form.
138 9097962 We have examined 10 unrelated Caucasian families in which MODY/NIDDM co-segregated with markers for MODY3 for mutations in the HNF-1alpha gene (TCF1).
139 9097962 Maturity-onset diabetes of the young (MODY) is a genetically heterogeneous subtype of non-insulin-dependent diabetes mellitus (NIDDM) characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
140 9097962 Recent studies have shown that mutations in the two functionally related transcription factors, hepatocyte nuclear factor 4 alpha (HNF-4alpha) and hepatocyte nuclear factor 1 alpha (HNF-1alpha) are associated with the MODY1 and MODY3 forms of diabetes respectively, whereas mutations in the enzyme glucokinase are the cause of the MODY2 form.
141 9097962 We have examined 10 unrelated Caucasian families in which MODY/NIDDM co-segregated with markers for MODY3 for mutations in the HNF-1alpha gene (TCF1).
142 9105779 In particular, monozygotic twin studies have indicated a higher rate of concordance in non-insulin-dependent (NIDDM) than in insulin-dependent diabetes mellitus (IDDM).
143 9105779 In IDDM, 8 susceptibility loci have been identified, notably the HLA complex and insulin promotor gene.
144 9105779 Rigorous family studies have identified monogenic subtypes representing 10-15% of all NIDDM: MODY2 related to glucokinase gene mutations, MODY1 and MODY3 secondary to mutation of hepatic nuclear factors, and diabetes resulting from deletion or mutation of mitochondrial DNA.
145 9105779 Finally, susceptibility genes for the increased severity and frequency of vascular complications have been identified, such as angiotensin converting enzyme, aldose reductase and aldehyde dehydrogenase genes.
146 9133559 Evidence for linkage to NIDDM was found with polymorphic loci that map to the long arms of human chromosomes 20 and 12 in regions containing the MODY1 and MODY3 genes.
147 9133559 No evidence for linkage of MODY1 and MODY3 markers to NIDDM in African-American sib pairs was observed.
148 9133559 In addition, no evidence for linkage to MODY2 (glucokinase-associated MODY) was observed with either study population.
149 9133559 The results suggest that genes contributing to NIDDM in the general Caucasian population are located in the regions containing the MODY1 and MODY3 genes.
150 9133559 Evidence for linkage to NIDDM was found with polymorphic loci that map to the long arms of human chromosomes 20 and 12 in regions containing the MODY1 and MODY3 genes.
151 9133559 No evidence for linkage of MODY1 and MODY3 markers to NIDDM in African-American sib pairs was observed.
152 9133559 In addition, no evidence for linkage to MODY2 (glucokinase-associated MODY) was observed with either study population.
153 9133559 The results suggest that genes contributing to NIDDM in the general Caucasian population are located in the regions containing the MODY1 and MODY3 genes.
154 9133559 Evidence for linkage to NIDDM was found with polymorphic loci that map to the long arms of human chromosomes 20 and 12 in regions containing the MODY1 and MODY3 genes.
155 9133559 No evidence for linkage of MODY1 and MODY3 markers to NIDDM in African-American sib pairs was observed.
156 9133559 In addition, no evidence for linkage to MODY2 (glucokinase-associated MODY) was observed with either study population.
157 9133559 The results suggest that genes contributing to NIDDM in the general Caucasian population are located in the regions containing the MODY1 and MODY3 genes.
158 9133559 Evidence for linkage to NIDDM was found with polymorphic loci that map to the long arms of human chromosomes 20 and 12 in regions containing the MODY1 and MODY3 genes.
159 9133559 No evidence for linkage of MODY1 and MODY3 markers to NIDDM in African-American sib pairs was observed.
160 9133559 In addition, no evidence for linkage to MODY2 (glucokinase-associated MODY) was observed with either study population.
161 9133559 The results suggest that genes contributing to NIDDM in the general Caucasian population are located in the regions containing the MODY1 and MODY3 genes.
162 9162575 Maturity-onset diabetes of the young (MODY), MODY genes and non-insulin-dependent diabetes mellitus.
163 9162575 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of non-insulin-dependent diabetes mellitus (NIDDM) characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
164 9162575 To date, three MODY genes have been identified on chromosomes 20q [hepatocyte nuclear factor (HNF-4 alpha)/MODY1], 7p (glucokinase/MODY2) and 12q (HNF-1 alpha/MODY3).
165 9162575 In contrast, MODY1 and MODY3 are characterised by severe insulin secretory defects and major hyperglycaemia associated with microvascular complications.
166 9162575 Maturity-onset diabetes of the young (MODY), MODY genes and non-insulin-dependent diabetes mellitus.
167 9162575 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of non-insulin-dependent diabetes mellitus (NIDDM) characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
168 9162575 To date, three MODY genes have been identified on chromosomes 20q [hepatocyte nuclear factor (HNF-4 alpha)/MODY1], 7p (glucokinase/MODY2) and 12q (HNF-1 alpha/MODY3).
169 9162575 In contrast, MODY1 and MODY3 are characterised by severe insulin secretory defects and major hyperglycaemia associated with microvascular complications.
170 9162575 Maturity-onset diabetes of the young (MODY), MODY genes and non-insulin-dependent diabetes mellitus.
171 9162575 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of non-insulin-dependent diabetes mellitus (NIDDM) characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
172 9162575 To date, three MODY genes have been identified on chromosomes 20q [hepatocyte nuclear factor (HNF-4 alpha)/MODY1], 7p (glucokinase/MODY2) and 12q (HNF-1 alpha/MODY3).
173 9162575 In contrast, MODY1 and MODY3 are characterised by severe insulin secretory defects and major hyperglycaemia associated with microvascular complications.
174 9162575 Maturity-onset diabetes of the young (MODY), MODY genes and non-insulin-dependent diabetes mellitus.
175 9162575 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of non-insulin-dependent diabetes mellitus (NIDDM) characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
176 9162575 To date, three MODY genes have been identified on chromosomes 20q [hepatocyte nuclear factor (HNF-4 alpha)/MODY1], 7p (glucokinase/MODY2) and 12q (HNF-1 alpha/MODY3).
177 9162575 In contrast, MODY1 and MODY3 are characterised by severe insulin secretory defects and major hyperglycaemia associated with microvascular complications.
178 9231664 The genes encoding the functionally related hepatocyte nuclear factors HNF-1alpha and HNF-4alpha play a critical role in normal pancreatic beta-cell function.
179 9231664 Mutations in these liver-enriched transcription factors result in two forms of early-onset type 2 diabetes (maturity-onset diabetes of the young [MODY]), MODY3 and MODY1, which are characterized by impaired glucose-stimulated insulin secretion, early disease onset, and autosomal dominant inheritance.
180 9231664 We report the identification and characterization of simple tandem repeat DNA polymorphisms in the genes encoding HNF-3alpha, -3beta, -3gamma, -4gamma, and -6 and the mapping of HNF-6 to chromosome bands 15q21.1-21.2 by fluorescence in situ hybridization.
181 9231664 The genes encoding the functionally related hepatocyte nuclear factors HNF-1alpha and HNF-4alpha play a critical role in normal pancreatic beta-cell function.
182 9231664 Mutations in these liver-enriched transcription factors result in two forms of early-onset type 2 diabetes (maturity-onset diabetes of the young [MODY]), MODY3 and MODY1, which are characterized by impaired glucose-stimulated insulin secretion, early disease onset, and autosomal dominant inheritance.
183 9231664 We report the identification and characterization of simple tandem repeat DNA polymorphisms in the genes encoding HNF-3alpha, -3beta, -3gamma, -4gamma, and -6 and the mapping of HNF-6 to chromosome bands 15q21.1-21.2 by fluorescence in situ hybridization.
184 9243109 Maturity-onset diabetes of the young (MODY) is a monogenic subgroup of non-insulin dependent diabetes mellitus (NIDDM) characterised bylan early age of onset (< 25 years) and an autosomal dominant mode of inheritance.
185 9243109 MODY is genetically heterogeneous with three different genes identified to date; hepatocyte nuclear factor 4 alpha (HNF-4 alpha) [MODY1], glucokinase [MODY2] and hepatocyte nuclear factor 1 alpha (HNF-1 alpha) [MODY3].
186 9243109 Maturity-onset diabetes of the young (MODY) is a monogenic subgroup of non-insulin dependent diabetes mellitus (NIDDM) characterised bylan early age of onset (< 25 years) and an autosomal dominant mode of inheritance.
187 9243109 MODY is genetically heterogeneous with three different genes identified to date; hepatocyte nuclear factor 4 alpha (HNF-4 alpha) [MODY1], glucokinase [MODY2] and hepatocyte nuclear factor 1 alpha (HNF-1 alpha) [MODY3].
188 9267996 To address the question of whether genetic variability of HNF-4alpha is associated with late onset non-insulin-dependent diabetes mellitus (NIDDM) we have sequenced the coding region and intron/exon boundaries of the gene in 36 randomly recruited Danish NIDDM patients.
189 9294105 Mutations in the hepatocyte nuclear factor(HNF)-4alpha/MODY1, glucokinase/MODY2, and HNF-1alpha/MODY3 genes can cause this form of diabetes.
190 9294105 In contrast to the glucokinase and HNF-1alpha genes, mutations in the HNF-4alpha gene are a relatively uncommon cause of MODY, and our understanding of the MODY1 form of diabetes is based on studies of only a single family, the R-W pedigree.
191 9294105 Mutations in the hepatocyte nuclear factor(HNF)-4alpha/MODY1, glucokinase/MODY2, and HNF-1alpha/MODY3 genes can cause this form of diabetes.
192 9294105 In contrast to the glucokinase and HNF-1alpha genes, mutations in the HNF-4alpha gene are a relatively uncommon cause of MODY, and our understanding of the MODY1 form of diabetes is based on studies of only a single family, the R-W pedigree.
193 9313765 The results suggest that mutations in the HNF-4 alpha gene may cause early-onset NIDDM/MODY in Japanese but they are less common than mutations in the HNF-1 alpha/MODY3 gene.
194 9356021 Diminished insulin and glucagon secretory responses to arginine in nondiabetic subjects with a mutation in the hepatocyte nuclear factor-4alpha/MODY1 gene.
195 9356021 Nondiabetic subjects with the Q268X mutation in the hepatocyte nuclear factor (HNF)-4alpha/MODY1 gene have impaired glucose-induced insulin secretion.
196 9356021 The decreased ISR to arginine in the ND[+] group compared with the ND[-] group, magnified by glucose potentiation, indicated that HNF-4alpha affects the signaling pathway for arginine-induced insulin secretion.
197 9356021 Diminished insulin and glucagon secretory responses to arginine in nondiabetic subjects with a mutation in the hepatocyte nuclear factor-4alpha/MODY1 gene.
198 9356021 Nondiabetic subjects with the Q268X mutation in the hepatocyte nuclear factor (HNF)-4alpha/MODY1 gene have impaired glucose-induced insulin secretion.
199 9356021 The decreased ISR to arginine in the ND[+] group compared with the ND[-] group, magnified by glucose potentiation, indicated that HNF-4alpha affects the signaling pathway for arginine-induced insulin secretion.
200 9356021 Diminished insulin and glucagon secretory responses to arginine in nondiabetic subjects with a mutation in the hepatocyte nuclear factor-4alpha/MODY1 gene.
201 9356021 Nondiabetic subjects with the Q268X mutation in the hepatocyte nuclear factor (HNF)-4alpha/MODY1 gene have impaired glucose-induced insulin secretion.
202 9356021 The decreased ISR to arginine in the ND[+] group compared with the ND[-] group, magnified by glucose potentiation, indicated that HNF-4alpha affects the signaling pathway for arginine-induced insulin secretion.
203 9364344 The pathophysiology of the MODY subtypes is variable with both increased and decreased insulin levels being seen.
204 9371825 A nonsense mutation (Q268X) in exon 7 of the HNF4alpha gene is responsible for an autosomal dominant, early-onset form of non-insulin-dependent diabetes mellitus (maturity-onset diabetes of the young; gene named MODY1).
205 9371825 By exploiting this system we have identified several genes encoding components of the glucose-dependent insulin secretion pathway whose expression is dependent upon HNF4alpha.
206 9371825 These include glucose transporter 2, and the glycolytic enzymes aldolase B and glyceraldehyde-3-phosphate dehydrogenase, and liver pyruvate kinase.
207 9371825 A nonsense mutation (Q268X) in exon 7 of the HNF4alpha gene is responsible for an autosomal dominant, early-onset form of non-insulin-dependent diabetes mellitus (maturity-onset diabetes of the young; gene named MODY1).
208 9371825 By exploiting this system we have identified several genes encoding components of the glucose-dependent insulin secretion pathway whose expression is dependent upon HNF4alpha.
209 9371825 These include glucose transporter 2, and the glycolytic enzymes aldolase B and glyceraldehyde-3-phosphate dehydrogenase, and liver pyruvate kinase.
210 9375718 Analysis of the glucokinase gene in Mexican families displaying early-onset non-insulin-dependent diabetes mellitus including MODY families.
211 9375718 In Caucasian population, mutations in the glucokinase gene, the TCF1, and TCF14 genes, have been identified in a subgroup of early-onset NIDDM patients denominated MODY (maturity-onset diabetes of the young), which show an autosomal dominant pattern of inheritance.
212 9375718 As a first step in the molecular characterization of Mexican families displaying early-onset NIDDM we searched for mutations in the glucokinase gene through SSCP analysis and/or direct sequencing in 26 individuals from 22 independent families, where at least four can be classified as MODY.
213 9375718 The phenotype and clinical profile of some of the studied patients is compatible with that of patients carrying mutations in the TCF1 or TCF14 genes, while others may carry mutations in different loci.
214 9375718 Analysis of the glucokinase gene in Mexican families displaying early-onset non-insulin-dependent diabetes mellitus including MODY families.
215 9375718 In Caucasian population, mutations in the glucokinase gene, the TCF1, and TCF14 genes, have been identified in a subgroup of early-onset NIDDM patients denominated MODY (maturity-onset diabetes of the young), which show an autosomal dominant pattern of inheritance.
216 9375718 As a first step in the molecular characterization of Mexican families displaying early-onset NIDDM we searched for mutations in the glucokinase gene through SSCP analysis and/or direct sequencing in 26 individuals from 22 independent families, where at least four can be classified as MODY.
217 9375718 The phenotype and clinical profile of some of the studied patients is compatible with that of patients carrying mutations in the TCF1 or TCF14 genes, while others may carry mutations in different loci.
218 9375718 Analysis of the glucokinase gene in Mexican families displaying early-onset non-insulin-dependent diabetes mellitus including MODY families.
219 9375718 In Caucasian population, mutations in the glucokinase gene, the TCF1, and TCF14 genes, have been identified in a subgroup of early-onset NIDDM patients denominated MODY (maturity-onset diabetes of the young), which show an autosomal dominant pattern of inheritance.
220 9375718 As a first step in the molecular characterization of Mexican families displaying early-onset NIDDM we searched for mutations in the glucokinase gene through SSCP analysis and/or direct sequencing in 26 individuals from 22 independent families, where at least four can be classified as MODY.
221 9375718 The phenotype and clinical profile of some of the studied patients is compatible with that of patients carrying mutations in the TCF1 or TCF14 genes, while others may carry mutations in different loci.
222 9375718 Analysis of the glucokinase gene in Mexican families displaying early-onset non-insulin-dependent diabetes mellitus including MODY families.
223 9375718 In Caucasian population, mutations in the glucokinase gene, the TCF1, and TCF14 genes, have been identified in a subgroup of early-onset NIDDM patients denominated MODY (maturity-onset diabetes of the young), which show an autosomal dominant pattern of inheritance.
224 9375718 As a first step in the molecular characterization of Mexican families displaying early-onset NIDDM we searched for mutations in the glucokinase gene through SSCP analysis and/or direct sequencing in 26 individuals from 22 independent families, where at least four can be classified as MODY.
225 9375718 The phenotype and clinical profile of some of the studied patients is compatible with that of patients carrying mutations in the TCF1 or TCF14 genes, while others may carry mutations in different loci.
226 9449683 A missense mutation in hepatocyte nuclear factor-4 alpha, resulting in a reduced transactivation activity, in human late-onset non-insulin-dependent diabetes mellitus.
227 9449683 Recent studies have found mutations in the hepatocyte nuclear factor-4 alpha gene (HNF-4alpha) in families with maturity-onset diabetes of the young (MODY), an autosomal dominant form of diabetes characterized by early age at onset and a defect in glucose-stimulated insulin secretion.
228 9449683 A missense mutation in hepatocyte nuclear factor-4 alpha, resulting in a reduced transactivation activity, in human late-onset non-insulin-dependent diabetes mellitus.
229 9449683 Recent studies have found mutations in the hepatocyte nuclear factor-4 alpha gene (HNF-4alpha) in families with maturity-onset diabetes of the young (MODY), an autosomal dominant form of diabetes characterized by early age at onset and a defect in glucose-stimulated insulin secretion.
230 9460079 Notably, three MODY genes encode transcription factors implicated in the regulation of insulin gene transcription: hepatocyte nuclear factors 1 alpha and 4 alpha, and islet duodenum homeobox-1 (IDX-1, also known as IPF-1).
231 9460079 Recently, mouse knockouts of the transcription factors Pax4, Pax6, beta 2/neuroD, and Isl-1 result in severe anomalies in the development of the endocrine pancreas.
232 9472859 Maturity-onset diabetes of the young (MODY) can be defined by the clinical characteristics of early-onset Type 2 (non-insulin-dependent) diabetes and autosomal dominant inheritance.
233 9472859 Mutations in four genes have been shown to cause MODY: glucokinase, hepatic nuclear factor 1 alpha (HNF1alpha), hepatic nuclear factor 4 alpha (HNF4alpha) and insulin promoter [corrected] factor 1 (IPF1).
234 9472859 Patients with HNF4alpha and IPF1 mutations show a similar clinical picture to HNF1alpha although diabetes may be diagnosed later.
235 9472859 Maturity-onset diabetes of the young (MODY) can be defined by the clinical characteristics of early-onset Type 2 (non-insulin-dependent) diabetes and autosomal dominant inheritance.
236 9472859 Mutations in four genes have been shown to cause MODY: glucokinase, hepatic nuclear factor 1 alpha (HNF1alpha), hepatic nuclear factor 4 alpha (HNF4alpha) and insulin promoter [corrected] factor 1 (IPF1).
237 9472859 Patients with HNF4alpha and IPF1 mutations show a similar clinical picture to HNF1alpha although diabetes may be diagnosed later.
238 9472859 Maturity-onset diabetes of the young (MODY) can be defined by the clinical characteristics of early-onset Type 2 (non-insulin-dependent) diabetes and autosomal dominant inheritance.
239 9472859 Mutations in four genes have been shown to cause MODY: glucokinase, hepatic nuclear factor 1 alpha (HNF1alpha), hepatic nuclear factor 4 alpha (HNF4alpha) and insulin promoter [corrected] factor 1 (IPF1).
240 9472859 Patients with HNF4alpha and IPF1 mutations show a similar clinical picture to HNF1alpha although diabetes may be diagnosed later.
241 9522422 A search for mutations of the glucokinase and HNF-1 alpha genes and for mitochondrial DNA was made, anti-islet and anti-GAD antibodies were determined and HLA class II genotyping was performed.
242 9522422 MODY is a form of diabetes which has an autosomal dominant inheritance for which 3 genes have already been implicated (MODY1, HNF-4 gene; MODY2, glucokinase gene, and MODY3, HNF-1 alpha gene).
243 9531829 Maturity-onset diabetes of the young (MODY) is a clinically and genetically heterogenous disorder characterized by autosomal dominant inheritance with onset usually before 25 years of age, and a primary defect in glucose-stimulated insulin secretion.
244 9531829 These are the genes encoding the glycolytic enzyme glucokinase, three liver-enriched transcription factors, hepatocyte nuclear factor (HNF)-1 alpha, HNF-1 beta and HNF-4 alpha, and the gene encoding the transcription factor, insulin promoter factor-1 (IPF-1).
245 9531829 Maturity-onset diabetes of the young (MODY) is a clinically and genetically heterogenous disorder characterized by autosomal dominant inheritance with onset usually before 25 years of age, and a primary defect in glucose-stimulated insulin secretion.
246 9531829 These are the genes encoding the glycolytic enzyme glucokinase, three liver-enriched transcription factors, hepatocyte nuclear factor (HNF)-1 alpha, HNF-1 beta and HNF-4 alpha, and the gene encoding the transcription factor, insulin promoter factor-1 (IPF-1).
247 9539292 To date, three MODY genes have been identified on chromosomes 20q (MODY1/hepatic nuclear factor (HNF)-4alpha), 7p (MODY2/glucokinase) and 12q (MODY3/HNF-1alpha).
248 9539292 In contrast, MODY1 and MODY3 are characterised by severe insulin secretory defects, and by major hyperglycaemia associated with microvascular complications.
249 9539292 To date, three MODY genes have been identified on chromosomes 20q (MODY1/hepatic nuclear factor (HNF)-4alpha), 7p (MODY2/glucokinase) and 12q (MODY3/HNF-1alpha).
250 9539292 In contrast, MODY1 and MODY3 are characterised by severe insulin secretory defects, and by major hyperglycaemia associated with microvascular complications.
251 9562352 Thirty-four percent of the MODY patients had mild and 13% had severe non-proliferative or proliferative retinopathy; this figure did not differ from the figures in insulin-dependent diabetes mellitus (IDDM) and non-insulin-dependent diabetes mellitus (NIDDM) patients matched for duration and glycaemic control but not for age.
252 9562352 Neither did the prevalence of microalbuminuria differ between MODY3 and IDDM or NIDDM patients (19 vs 24 and 23%).
253 9562352 Hypertension was less frequent in MODY3 and IDDM than in NIDDM (24.5 and 19 vs 53.7%; p < 0.001).
254 9593777 Mutations in the gene for the transcription factor hepatocyte nuclear factor (HNF) 1alpha cause maturity-onset diabetes of the young (MODY) 3, a form of diabetes that results from defects in insulin secretion.
255 9593777 Since the nature of these defects has not been defined, we compared insulin secretory function in heterozygous [HNF-1alpha (+/-)] or homozygous [HNF-1alpha (-/-)] mice with null mutations in the HNF-1alpha gene with their wild-type littermates [HNF-1alpha (+/+)].
256 9593777 Insulin secretory responses to glucose and arginine in the perfused pancreas and perifused islets from HNF-1alpha (-/-) mice were < 15% of the values in the other two groups and were associated with similar reductions in intracellular Ca2+ responses.
257 9593777 These defects were not due to a decrease in glucokinase or insulin gene transcription. beta cell mass adjusted for body weight was not reduced in the (-/-) animals, although pancreatic insulin content adjusted for pancreas weight was slightly lower (0.06+/-0.01 vs. 0.10+/-0.01 microg/mg, P < 0.01) than in the (+/+) animals.
258 9626139 Mutations of the hepatocyte nuclear factor-1 alpha (HNF1 alpha) gene are an important cause of autosomal dominant diabetes with onset before age 25 yr [maturity-onset diabetes of the young (MODY)], and some regions of the HNF1 alpha gene appear to be hot spots for mutations.
259 9685261 Mutations in HNF-1alphaand HNF-4alpha genes impair insulin secretion and cause type 2 diabetes.
260 9685261 Regulation of HNF-4/HNF-1 expression by HNF-3alpha and HNF-3beta was studied in embryoid bodies in which one or both HNF-3alpha or HNF-3beta alleles were inactivated.
261 9685261 HNF-3beta positively regulated the expression of HNF-4alpha/HNF-1alpha and their downstream targets, implicating a role in diabetes.
262 9685261 In contrast, HNF-3alpha acts as a negative regulator of HNF-4alpha/HNF-1alpha demonstrating that HNF-3alpha and HNF-3beta have antagonistic transcriptional regulatory functions in vivo.
263 9685261 In addition, the HNF-3alpha/HNF-3beta ratio is modulated by the presence of insulin, providing evidence that the HNF network may have important roles in mediating the action of insulin.
264 9685261 Mutations in HNF-1alphaand HNF-4alpha genes impair insulin secretion and cause type 2 diabetes.
265 9685261 Regulation of HNF-4/HNF-1 expression by HNF-3alpha and HNF-3beta was studied in embryoid bodies in which one or both HNF-3alpha or HNF-3beta alleles were inactivated.
266 9685261 HNF-3beta positively regulated the expression of HNF-4alpha/HNF-1alpha and their downstream targets, implicating a role in diabetes.
267 9685261 In contrast, HNF-3alpha acts as a negative regulator of HNF-4alpha/HNF-1alpha demonstrating that HNF-3alpha and HNF-3beta have antagonistic transcriptional regulatory functions in vivo.
268 9685261 In addition, the HNF-3alpha/HNF-3beta ratio is modulated by the presence of insulin, providing evidence that the HNF network may have important roles in mediating the action of insulin.
269 9685261 Mutations in HNF-1alphaand HNF-4alpha genes impair insulin secretion and cause type 2 diabetes.
270 9685261 Regulation of HNF-4/HNF-1 expression by HNF-3alpha and HNF-3beta was studied in embryoid bodies in which one or both HNF-3alpha or HNF-3beta alleles were inactivated.
271 9685261 HNF-3beta positively regulated the expression of HNF-4alpha/HNF-1alpha and their downstream targets, implicating a role in diabetes.
272 9685261 In contrast, HNF-3alpha acts as a negative regulator of HNF-4alpha/HNF-1alpha demonstrating that HNF-3alpha and HNF-3beta have antagonistic transcriptional regulatory functions in vivo.
273 9685261 In addition, the HNF-3alpha/HNF-3beta ratio is modulated by the presence of insulin, providing evidence that the HNF network may have important roles in mediating the action of insulin.
274 9685261 Mutations in HNF-1alphaand HNF-4alpha genes impair insulin secretion and cause type 2 diabetes.
275 9685261 Regulation of HNF-4/HNF-1 expression by HNF-3alpha and HNF-3beta was studied in embryoid bodies in which one or both HNF-3alpha or HNF-3beta alleles were inactivated.
276 9685261 HNF-3beta positively regulated the expression of HNF-4alpha/HNF-1alpha and their downstream targets, implicating a role in diabetes.
277 9685261 In contrast, HNF-3alpha acts as a negative regulator of HNF-4alpha/HNF-1alpha demonstrating that HNF-3alpha and HNF-3beta have antagonistic transcriptional regulatory functions in vivo.
278 9685261 In addition, the HNF-3alpha/HNF-3beta ratio is modulated by the presence of insulin, providing evidence that the HNF network may have important roles in mediating the action of insulin.
279 9703322 Because the dimerization domain is intact in many of the mutant forms of HNF-1alpha found in MODY subjects, these mutant proteins may impair pancreatic beta-cell function by forming nonproductive dimers with wild-type protein, thereby inhibiting its activity; that is, they are dominant-negative mutations.
280 9715376 The fact that both insulin resistance and impaired insulin release have been found to precede and predict NIDDM in prospective studies may be in part a reflection of just such relatedness. 4) Direct genetic analysis is effective in rarer forms of glucose intolerance (MODY, mitochondrial mutations, etc.) but encounters serious difficulties with typical late-onset NIDDM.
281 9715376 Incidentally, any defect in insulin secretion, whether in normoglycemic or hyperglycemic persons, could be due to other factors than primary beta-cell dysfunction: amyloid deposits in the pancreas (126), changes in insulin secretagogues (amylin, GLP-1, GIP, galanin) (127-130), early intrauterine malnutrition (131).
282 9726235 Mutations of the hepatocyte nuclear factor (HNF)-1alpha gene cause impaired insulin secretion and hyperglycemia in patients with maturity-onset diabetes of the young (MODY)3.
283 9736233 Maturity-onset diabetes of the young (MODY) is a form of diabetes mellitus characterized by autosomal dominant inheritance, onset usually before 25 y of age and a primary defect in glucose-stimulated insulin secretion.
284 9736233 Mutations in the genes encoding the glycolytic enzyme glucokinase, the liver-enriched transcription factors, hepatocyte nuclear factor-1alpha (HNF-1alpha), HNF-1beta and HNF-4alpha, and the transcription factor, insulin promoter factor-1 (IPF-1) have all been associated with MODY.
285 9736233 The results presented here indicate that the glucokinase form of MODY occurs in Norway.
286 9736233 Maturity-onset diabetes of the young (MODY) is a form of diabetes mellitus characterized by autosomal dominant inheritance, onset usually before 25 y of age and a primary defect in glucose-stimulated insulin secretion.
287 9736233 Mutations in the genes encoding the glycolytic enzyme glucokinase, the liver-enriched transcription factors, hepatocyte nuclear factor-1alpha (HNF-1alpha), HNF-1beta and HNF-4alpha, and the transcription factor, insulin promoter factor-1 (IPF-1) have all been associated with MODY.
288 9736233 The results presented here indicate that the glucokinase form of MODY occurs in Norway.
289 9736233 Maturity-onset diabetes of the young (MODY) is a form of diabetes mellitus characterized by autosomal dominant inheritance, onset usually before 25 y of age and a primary defect in glucose-stimulated insulin secretion.
290 9736233 Mutations in the genes encoding the glycolytic enzyme glucokinase, the liver-enriched transcription factors, hepatocyte nuclear factor-1alpha (HNF-1alpha), HNF-1beta and HNF-4alpha, and the transcription factor, insulin promoter factor-1 (IPF-1) have all been associated with MODY.
291 9736233 The results presented here indicate that the glucokinase form of MODY occurs in Norway.
292 9754819 Maturity-onset diabetes of the young (MODY) is a heterogeneous subtype of non-insulin-dependent diabetes mellitus characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
293 9754819 To date five MODY genes have been identified: hepatocyte nuclear factor-4 alpha (HNF-4alpha/MODY1/TCF14) on chromosome 20q, glucokinase (GCK/MODY2) on chromosome 7p, hepatocyte nuclear factor-1 alpha (HNF-1alpha/MODY3/TCF1) on chromosome 12q, insulin promoter factor-1 (IPF1/MODY4) on chromosome 13q and hepatocyte nuclear factor-1 beta (HNF-1beta/MODY5/TCF2) on chromosome 17cen-q.
294 9754819 We have screened the HNF-4alpha, HNF-1alpha and HNF-1beta genes in members of 18 MODY kindreds who tested negative for glucokinase mutations.
295 9754819 Five missense (G31D, R159W, A161T, R200W, R271W), one substitution at the splice donor site of intron 5 (IVS5nt + 2T-->A) and one deletion mutation (P379fsdelT) were found in the HNF-1alpha gene, but no MODY-associated mutations were found in the HNF-4alpha and HNF-1beta genes.
296 9754819 Of 67 French MODY families that we have now studied, 42 (63%) have mutations in the glucokinase gene, 14 (21%) have mutations in the HNF-1alpha gene, and 11 (16%) have no mutations in the HNF-4alpha, IPF1 and HNF-1beta genes.
297 9754819 Maturity-onset diabetes of the young (MODY) is a heterogeneous subtype of non-insulin-dependent diabetes mellitus characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
298 9754819 To date five MODY genes have been identified: hepatocyte nuclear factor-4 alpha (HNF-4alpha/MODY1/TCF14) on chromosome 20q, glucokinase (GCK/MODY2) on chromosome 7p, hepatocyte nuclear factor-1 alpha (HNF-1alpha/MODY3/TCF1) on chromosome 12q, insulin promoter factor-1 (IPF1/MODY4) on chromosome 13q and hepatocyte nuclear factor-1 beta (HNF-1beta/MODY5/TCF2) on chromosome 17cen-q.
299 9754819 We have screened the HNF-4alpha, HNF-1alpha and HNF-1beta genes in members of 18 MODY kindreds who tested negative for glucokinase mutations.
300 9754819 Five missense (G31D, R159W, A161T, R200W, R271W), one substitution at the splice donor site of intron 5 (IVS5nt + 2T-->A) and one deletion mutation (P379fsdelT) were found in the HNF-1alpha gene, but no MODY-associated mutations were found in the HNF-4alpha and HNF-1beta genes.
301 9754819 Of 67 French MODY families that we have now studied, 42 (63%) have mutations in the glucokinase gene, 14 (21%) have mutations in the HNF-1alpha gene, and 11 (16%) have no mutations in the HNF-4alpha, IPF1 and HNF-1beta genes.
302 9754819 Maturity-onset diabetes of the young (MODY) is a heterogeneous subtype of non-insulin-dependent diabetes mellitus characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
303 9754819 To date five MODY genes have been identified: hepatocyte nuclear factor-4 alpha (HNF-4alpha/MODY1/TCF14) on chromosome 20q, glucokinase (GCK/MODY2) on chromosome 7p, hepatocyte nuclear factor-1 alpha (HNF-1alpha/MODY3/TCF1) on chromosome 12q, insulin promoter factor-1 (IPF1/MODY4) on chromosome 13q and hepatocyte nuclear factor-1 beta (HNF-1beta/MODY5/TCF2) on chromosome 17cen-q.
304 9754819 We have screened the HNF-4alpha, HNF-1alpha and HNF-1beta genes in members of 18 MODY kindreds who tested negative for glucokinase mutations.
305 9754819 Five missense (G31D, R159W, A161T, R200W, R271W), one substitution at the splice donor site of intron 5 (IVS5nt + 2T-->A) and one deletion mutation (P379fsdelT) were found in the HNF-1alpha gene, but no MODY-associated mutations were found in the HNF-4alpha and HNF-1beta genes.
306 9754819 Of 67 French MODY families that we have now studied, 42 (63%) have mutations in the glucokinase gene, 14 (21%) have mutations in the HNF-1alpha gene, and 11 (16%) have no mutations in the HNF-4alpha, IPF1 and HNF-1beta genes.
307 9754819 Maturity-onset diabetes of the young (MODY) is a heterogeneous subtype of non-insulin-dependent diabetes mellitus characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
308 9754819 To date five MODY genes have been identified: hepatocyte nuclear factor-4 alpha (HNF-4alpha/MODY1/TCF14) on chromosome 20q, glucokinase (GCK/MODY2) on chromosome 7p, hepatocyte nuclear factor-1 alpha (HNF-1alpha/MODY3/TCF1) on chromosome 12q, insulin promoter factor-1 (IPF1/MODY4) on chromosome 13q and hepatocyte nuclear factor-1 beta (HNF-1beta/MODY5/TCF2) on chromosome 17cen-q.
309 9754819 We have screened the HNF-4alpha, HNF-1alpha and HNF-1beta genes in members of 18 MODY kindreds who tested negative for glucokinase mutations.
310 9754819 Five missense (G31D, R159W, A161T, R200W, R271W), one substitution at the splice donor site of intron 5 (IVS5nt + 2T-->A) and one deletion mutation (P379fsdelT) were found in the HNF-1alpha gene, but no MODY-associated mutations were found in the HNF-4alpha and HNF-1beta genes.
311 9754819 Of 67 French MODY families that we have now studied, 42 (63%) have mutations in the glucokinase gene, 14 (21%) have mutations in the HNF-1alpha gene, and 11 (16%) have no mutations in the HNF-4alpha, IPF1 and HNF-1beta genes.
312 9754819 Maturity-onset diabetes of the young (MODY) is a heterogeneous subtype of non-insulin-dependent diabetes mellitus characterised by early onset, autosomal dominant inheritance and a primary defect in insulin secretion.
313 9754819 To date five MODY genes have been identified: hepatocyte nuclear factor-4 alpha (HNF-4alpha/MODY1/TCF14) on chromosome 20q, glucokinase (GCK/MODY2) on chromosome 7p, hepatocyte nuclear factor-1 alpha (HNF-1alpha/MODY3/TCF1) on chromosome 12q, insulin promoter factor-1 (IPF1/MODY4) on chromosome 13q and hepatocyte nuclear factor-1 beta (HNF-1beta/MODY5/TCF2) on chromosome 17cen-q.
314 9754819 We have screened the HNF-4alpha, HNF-1alpha and HNF-1beta genes in members of 18 MODY kindreds who tested negative for glucokinase mutations.
315 9754819 Five missense (G31D, R159W, A161T, R200W, R271W), one substitution at the splice donor site of intron 5 (IVS5nt + 2T-->A) and one deletion mutation (P379fsdelT) were found in the HNF-1alpha gene, but no MODY-associated mutations were found in the HNF-4alpha and HNF-1beta genes.
316 9754819 Of 67 French MODY families that we have now studied, 42 (63%) have mutations in the glucokinase gene, 14 (21%) have mutations in the HNF-1alpha gene, and 11 (16%) have no mutations in the HNF-4alpha, IPF1 and HNF-1beta genes.
317 9780731 Maturity-onset diabetes of the young (MODY) is a monogenic form of non-insulin-dependent diabetes mellitus (NIDDM) characterized by an early age of onset, often in childhood or adolescence and usually < 25 years of age, and autosomal dominant inheritance.
318 9780731 Clinical characterization of patients with MODY indicates that impaired insulin secretion is the primary defect responsible for the hyperglycemia in these patients.
319 9780731 Genetic studies have thus far identified five MODY susceptibility genes, four of which encode transcription factors; HNF (hepatocyte nuclear factor)-1 alpha, HNF-1 beta, HNF-4 alpha, and IPF1.
320 9780731 Maturity-onset diabetes of the young (MODY) is a monogenic form of non-insulin-dependent diabetes mellitus (NIDDM) characterized by an early age of onset, often in childhood or adolescence and usually < 25 years of age, and autosomal dominant inheritance.
321 9780731 Clinical characterization of patients with MODY indicates that impaired insulin secretion is the primary defect responsible for the hyperglycemia in these patients.
322 9780731 Genetic studies have thus far identified five MODY susceptibility genes, four of which encode transcription factors; HNF (hepatocyte nuclear factor)-1 alpha, HNF-1 beta, HNF-4 alpha, and IPF1.
323 9780731 Maturity-onset diabetes of the young (MODY) is a monogenic form of non-insulin-dependent diabetes mellitus (NIDDM) characterized by an early age of onset, often in childhood or adolescence and usually < 25 years of age, and autosomal dominant inheritance.
324 9780731 Clinical characterization of patients with MODY indicates that impaired insulin secretion is the primary defect responsible for the hyperglycemia in these patients.
325 9780731 Genetic studies have thus far identified five MODY susceptibility genes, four of which encode transcription factors; HNF (hepatocyte nuclear factor)-1 alpha, HNF-1 beta, HNF-4 alpha, and IPF1.
326 9792550 Maturity-onset diabetes of the young (MODY) is a genetically heterogeneous monogenic form of NIDDM characterized by an early age of onset and autosomal dominant inheritance, and linkage studies have identified genes that are mutated in different MODY pedigrees on chromosome 20 (MODY1 locus, hepatocyte nuclear factor-4alpha [HNF-4alpha] gene), chromosome 7 (MODY2 locus, glucokinase gene), and chromosome 12 (MODY3 locus, HNF-1alpha gene).
327 9792714 Critical structural elements and multitarget protein interactions of the transcriptional activator AF-1 of hepatocyte nuclear factor 4.
328 9792714 Recently, we showed that the 24 N-terminal residues of HNF-4 function as an acidic transcriptional activator, termed AF-1 (Hadzopoulou-Cladaras, M., Kistanova, E., Evagelopoulou, C., Zeng, S. , Cladaras C., and Ladias, J.
329 9792714 We showed that the aromatic and bulky hydrophobic residues Tyr6, Tyr14, Phe19, Lys10, and Lys17 are essential for AF-1 function.
330 9792714 Positional changes of Tyr6 and Tyr14 reduced AF-1 activity, underscoring the importance of primary structure for this activator.
331 9792714 Our analysis also indicated that AF-1 is bipartite, consisting of two modules that synergize to activate transcription.
332 9792714 More important, AF-1 shares common structural motifs and molecular targets with the activators of the tumor suppressor protein p53 and NF-kappaB-p65, suggesting similar mechanisms of action.
333 9792714 Remarkably, AF-1 interacted specifically with multiple transcriptional targets, including the TATA-binding protein; the TATA-binding protein-associated factors TAFII31 and TAFII80; transcription factor IIB; transcription factor IIH-p62; and the coactivators cAMP-responsive element-binding protein-binding protein, ADA2, and PC4.
334 9792714 The interaction of AF-1 with proteins that regulate distinct steps of transcription may provide a mechanism for synergistic activation of gene expression by AF-1.
335 9792714 Critical structural elements and multitarget protein interactions of the transcriptional activator AF-1 of hepatocyte nuclear factor 4.
336 9792714 Recently, we showed that the 24 N-terminal residues of HNF-4 function as an acidic transcriptional activator, termed AF-1 (Hadzopoulou-Cladaras, M., Kistanova, E., Evagelopoulou, C., Zeng, S. , Cladaras C., and Ladias, J.
337 9792714 We showed that the aromatic and bulky hydrophobic residues Tyr6, Tyr14, Phe19, Lys10, and Lys17 are essential for AF-1 function.
338 9792714 Positional changes of Tyr6 and Tyr14 reduced AF-1 activity, underscoring the importance of primary structure for this activator.
339 9792714 Our analysis also indicated that AF-1 is bipartite, consisting of two modules that synergize to activate transcription.
340 9792714 More important, AF-1 shares common structural motifs and molecular targets with the activators of the tumor suppressor protein p53 and NF-kappaB-p65, suggesting similar mechanisms of action.
341 9792714 Remarkably, AF-1 interacted specifically with multiple transcriptional targets, including the TATA-binding protein; the TATA-binding protein-associated factors TAFII31 and TAFII80; transcription factor IIB; transcription factor IIH-p62; and the coactivators cAMP-responsive element-binding protein-binding protein, ADA2, and PC4.
342 9792714 The interaction of AF-1 with proteins that regulate distinct steps of transcription may provide a mechanism for synergistic activation of gene expression by AF-1.
343 9812974 SRC-1 and GRIP1 coactivate transcription with hepatocyte nuclear factor 4.
344 9812974 In this study, we show that SRC-1 and GRIP1, which act as coactivators for various nuclear receptors, associate with HNF4 in vivo and enhance its transactivation potential.
345 9812974 The AF-2 domain of HNF4 is required for this interaction and for the potentiation of transcriptional activity by these coactivators. p300 can also serve as a coactivator with HNF4, and it synergizes with SRC-1 to further augment the activity of HNF4.
346 9812974 HNF4 is also a key regulator of the expression of hepatocyte nuclear factor-1 (HNF1).
347 9812974 The overexpression of SRC-1 or GRIP1 enhances expression from a HNF1 gene promoter-reporter in HepG2 hepatoma cells, and this requires an intact HNF4-binding site in the HNF1 gene promoter.
348 9812974 Type 1 maturity onset diabetes of young (MODY), which is characterized by abnormal glucose-mediated insulin secretion, is caused by mutations of the HNF4 gene.
349 9812974 A mutation of the HNF4-binding site in the HNF1 gene promoter has also been associated with MODY.
350 9812974 Thus, HNF4 is involved in the regulation of glucose homeostasis at several levels and along with the SRC-1, GRIP1, and p300 may play an important role in the pathophysiology of non-insulin-dependent diabetes mellitus.
351 9812974 SRC-1 and GRIP1 coactivate transcription with hepatocyte nuclear factor 4.
352 9812974 In this study, we show that SRC-1 and GRIP1, which act as coactivators for various nuclear receptors, associate with HNF4 in vivo and enhance its transactivation potential.
353 9812974 The AF-2 domain of HNF4 is required for this interaction and for the potentiation of transcriptional activity by these coactivators. p300 can also serve as a coactivator with HNF4, and it synergizes with SRC-1 to further augment the activity of HNF4.
354 9812974 HNF4 is also a key regulator of the expression of hepatocyte nuclear factor-1 (HNF1).
355 9812974 The overexpression of SRC-1 or GRIP1 enhances expression from a HNF1 gene promoter-reporter in HepG2 hepatoma cells, and this requires an intact HNF4-binding site in the HNF1 gene promoter.
356 9812974 Type 1 maturity onset diabetes of young (MODY), which is characterized by abnormal glucose-mediated insulin secretion, is caused by mutations of the HNF4 gene.
357 9812974 A mutation of the HNF4-binding site in the HNF1 gene promoter has also been associated with MODY.
358 9812974 Thus, HNF4 is involved in the regulation of glucose homeostasis at several levels and along with the SRC-1, GRIP1, and p300 may play an important role in the pathophysiology of non-insulin-dependent diabetes mellitus.
359 9812974 SRC-1 and GRIP1 coactivate transcription with hepatocyte nuclear factor 4.
360 9812974 In this study, we show that SRC-1 and GRIP1, which act as coactivators for various nuclear receptors, associate with HNF4 in vivo and enhance its transactivation potential.
361 9812974 The AF-2 domain of HNF4 is required for this interaction and for the potentiation of transcriptional activity by these coactivators. p300 can also serve as a coactivator with HNF4, and it synergizes with SRC-1 to further augment the activity of HNF4.
362 9812974 HNF4 is also a key regulator of the expression of hepatocyte nuclear factor-1 (HNF1).
363 9812974 The overexpression of SRC-1 or GRIP1 enhances expression from a HNF1 gene promoter-reporter in HepG2 hepatoma cells, and this requires an intact HNF4-binding site in the HNF1 gene promoter.
364 9812974 Type 1 maturity onset diabetes of young (MODY), which is characterized by abnormal glucose-mediated insulin secretion, is caused by mutations of the HNF4 gene.
365 9812974 A mutation of the HNF4-binding site in the HNF1 gene promoter has also been associated with MODY.
366 9812974 Thus, HNF4 is involved in the regulation of glucose homeostasis at several levels and along with the SRC-1, GRIP1, and p300 may play an important role in the pathophysiology of non-insulin-dependent diabetes mellitus.
367 9812974 SRC-1 and GRIP1 coactivate transcription with hepatocyte nuclear factor 4.
368 9812974 In this study, we show that SRC-1 and GRIP1, which act as coactivators for various nuclear receptors, associate with HNF4 in vivo and enhance its transactivation potential.
369 9812974 The AF-2 domain of HNF4 is required for this interaction and for the potentiation of transcriptional activity by these coactivators. p300 can also serve as a coactivator with HNF4, and it synergizes with SRC-1 to further augment the activity of HNF4.
370 9812974 HNF4 is also a key regulator of the expression of hepatocyte nuclear factor-1 (HNF1).
371 9812974 The overexpression of SRC-1 or GRIP1 enhances expression from a HNF1 gene promoter-reporter in HepG2 hepatoma cells, and this requires an intact HNF4-binding site in the HNF1 gene promoter.
372 9812974 Type 1 maturity onset diabetes of young (MODY), which is characterized by abnormal glucose-mediated insulin secretion, is caused by mutations of the HNF4 gene.
373 9812974 A mutation of the HNF4-binding site in the HNF1 gene promoter has also been associated with MODY.
374 9812974 Thus, HNF4 is involved in the regulation of glucose homeostasis at several levels and along with the SRC-1, GRIP1, and p300 may play an important role in the pathophysiology of non-insulin-dependent diabetes mellitus.
375 9812974 SRC-1 and GRIP1 coactivate transcription with hepatocyte nuclear factor 4.
376 9812974 In this study, we show that SRC-1 and GRIP1, which act as coactivators for various nuclear receptors, associate with HNF4 in vivo and enhance its transactivation potential.
377 9812974 The AF-2 domain of HNF4 is required for this interaction and for the potentiation of transcriptional activity by these coactivators. p300 can also serve as a coactivator with HNF4, and it synergizes with SRC-1 to further augment the activity of HNF4.
378 9812974 HNF4 is also a key regulator of the expression of hepatocyte nuclear factor-1 (HNF1).
379 9812974 The overexpression of SRC-1 or GRIP1 enhances expression from a HNF1 gene promoter-reporter in HepG2 hepatoma cells, and this requires an intact HNF4-binding site in the HNF1 gene promoter.
380 9812974 Type 1 maturity onset diabetes of young (MODY), which is characterized by abnormal glucose-mediated insulin secretion, is caused by mutations of the HNF4 gene.
381 9812974 A mutation of the HNF4-binding site in the HNF1 gene promoter has also been associated with MODY.
382 9812974 Thus, HNF4 is involved in the regulation of glucose homeostasis at several levels and along with the SRC-1, GRIP1, and p300 may play an important role in the pathophysiology of non-insulin-dependent diabetes mellitus.
383 9812974 SRC-1 and GRIP1 coactivate transcription with hepatocyte nuclear factor 4.
384 9812974 In this study, we show that SRC-1 and GRIP1, which act as coactivators for various nuclear receptors, associate with HNF4 in vivo and enhance its transactivation potential.
385 9812974 The AF-2 domain of HNF4 is required for this interaction and for the potentiation of transcriptional activity by these coactivators. p300 can also serve as a coactivator with HNF4, and it synergizes with SRC-1 to further augment the activity of HNF4.
386 9812974 HNF4 is also a key regulator of the expression of hepatocyte nuclear factor-1 (HNF1).
387 9812974 The overexpression of SRC-1 or GRIP1 enhances expression from a HNF1 gene promoter-reporter in HepG2 hepatoma cells, and this requires an intact HNF4-binding site in the HNF1 gene promoter.
388 9812974 Type 1 maturity onset diabetes of young (MODY), which is characterized by abnormal glucose-mediated insulin secretion, is caused by mutations of the HNF4 gene.
389 9812974 A mutation of the HNF4-binding site in the HNF1 gene promoter has also been associated with MODY.
390 9812974 Thus, HNF4 is involved in the regulation of glucose homeostasis at several levels and along with the SRC-1, GRIP1, and p300 may play an important role in the pathophysiology of non-insulin-dependent diabetes mellitus.
391 9812974 SRC-1 and GRIP1 coactivate transcription with hepatocyte nuclear factor 4.
392 9812974 In this study, we show that SRC-1 and GRIP1, which act as coactivators for various nuclear receptors, associate with HNF4 in vivo and enhance its transactivation potential.
393 9812974 The AF-2 domain of HNF4 is required for this interaction and for the potentiation of transcriptional activity by these coactivators. p300 can also serve as a coactivator with HNF4, and it synergizes with SRC-1 to further augment the activity of HNF4.
394 9812974 HNF4 is also a key regulator of the expression of hepatocyte nuclear factor-1 (HNF1).
395 9812974 The overexpression of SRC-1 or GRIP1 enhances expression from a HNF1 gene promoter-reporter in HepG2 hepatoma cells, and this requires an intact HNF4-binding site in the HNF1 gene promoter.
396 9812974 Type 1 maturity onset diabetes of young (MODY), which is characterized by abnormal glucose-mediated insulin secretion, is caused by mutations of the HNF4 gene.
397 9812974 A mutation of the HNF4-binding site in the HNF1 gene promoter has also been associated with MODY.
398 9812974 Thus, HNF4 is involved in the regulation of glucose homeostasis at several levels and along with the SRC-1, GRIP1, and p300 may play an important role in the pathophysiology of non-insulin-dependent diabetes mellitus.
399 9812974 SRC-1 and GRIP1 coactivate transcription with hepatocyte nuclear factor 4.
400 9812974 In this study, we show that SRC-1 and GRIP1, which act as coactivators for various nuclear receptors, associate with HNF4 in vivo and enhance its transactivation potential.
401 9812974 The AF-2 domain of HNF4 is required for this interaction and for the potentiation of transcriptional activity by these coactivators. p300 can also serve as a coactivator with HNF4, and it synergizes with SRC-1 to further augment the activity of HNF4.
402 9812974 HNF4 is also a key regulator of the expression of hepatocyte nuclear factor-1 (HNF1).
403 9812974 The overexpression of SRC-1 or GRIP1 enhances expression from a HNF1 gene promoter-reporter in HepG2 hepatoma cells, and this requires an intact HNF4-binding site in the HNF1 gene promoter.
404 9812974 Type 1 maturity onset diabetes of young (MODY), which is characterized by abnormal glucose-mediated insulin secretion, is caused by mutations of the HNF4 gene.
405 9812974 A mutation of the HNF4-binding site in the HNF1 gene promoter has also been associated with MODY.
406 9812974 Thus, HNF4 is involved in the regulation of glucose homeostasis at several levels and along with the SRC-1, GRIP1, and p300 may play an important role in the pathophysiology of non-insulin-dependent diabetes mellitus.
407 9855864 The insulin receptor gene on chromosome 19p13 and at least five glucose transporter genes contribute to Type 2 diabetes susceptibility, and further associations may emerge from study of the glycogen synthase gene, the glucokinase gene, the MODY genes, and the leptin gene.
408 9867222 Mutations in the hepatocyte nuclear factor-1alpha (HNF-1alpha) gene are the cause of maturity-onset diabetes of the young type 3 (MODY3), which is characterised by a severe impairment of insulin secretion and an early onset of the disease.
409 9867222 Also at onset of diabetes some MODY patients show similar clinical symptoms and signs as patients with Type I (insulin-dependent) diabetes mellitus.
410 9867222 DR3 or DR4 or both were examined by single-strand conformational polymorphism scanning and direct sequencing of the coding region and the minimal promoter of the HNF-1alpha gene.
411 9887471 Recent studies have shown that mutations in four transcription factors, hepatocyte nuclear factor-4 alpha (HNF-4 alpha), hepatocyte nuclear factor-1 alpha (HNF-1 alpha), hepatocyte nuclear factor-1 beta (HNF-1 beta), and insulin promoter factor-1 (IPF-1), are responsible for maturity onset diabetes of the young (MODY) which is characterised by an early age of onset and autosomal dominant inheritance.
412 9887471 Some mutations in HNF-1 alpha were identified in subjects with atypical forms of insulin-dependent diabetes, and a mutation in HNF-4 alpha and several mutations in IPF-1 were found in type 2 diabetic families with typical late-onset NIDDM.
413 9887471 Recent studies have shown that mutations in four transcription factors, hepatocyte nuclear factor-4 alpha (HNF-4 alpha), hepatocyte nuclear factor-1 alpha (HNF-1 alpha), hepatocyte nuclear factor-1 beta (HNF-1 beta), and insulin promoter factor-1 (IPF-1), are responsible for maturity onset diabetes of the young (MODY) which is characterised by an early age of onset and autosomal dominant inheritance.
414 9887471 Some mutations in HNF-1 alpha were identified in subjects with atypical forms of insulin-dependent diabetes, and a mutation in HNF-4 alpha and several mutations in IPF-1 were found in type 2 diabetic families with typical late-onset NIDDM.
415 10199131 Until now five genes (HNF-4 alpha, glucokinase, HNF-1 alpha, IPF-1 and HNF-1 beta), whose mutation can result in MODY, insulin and insulin receptor genes, and mitochondria DNA have been reported to be responsible for diabetes.
416 10322408 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of Type 2 diabetes characterized by early onset, autosomal dominant inheritance and primary defects in insulin secretion.
417 10322408 To date, five proteins have been identified whose genetic absence or impairment causes MODY, the enzyme glucokinase (GCK/MODY2) and four transcription factors: hepatocyte nuclear factor 4alpha (HNF-4alpha/MODY1), HNF-1alpha/MODY3, insulin promoter factor 1 (IPF-1/MODY4) and HNF-1beta/MODY5.
418 10322408 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of Type 2 diabetes characterized by early onset, autosomal dominant inheritance and primary defects in insulin secretion.
419 10322408 To date, five proteins have been identified whose genetic absence or impairment causes MODY, the enzyme glucokinase (GCK/MODY2) and four transcription factors: hepatocyte nuclear factor 4alpha (HNF-4alpha/MODY1), HNF-1alpha/MODY3, insulin promoter factor 1 (IPF-1/MODY4) and HNF-1beta/MODY5.
420 10331424 Using the mutated human HNF-4alpha2, we have found that, in the absence of chicken ovalbumin upstream promoter transcription factor II (COUP TFII), the E276Q substitution does not significantly affect the dimerization and transactivating activities of HNF-4alpha, at least on the promoters studied herein.
421 10331424 The impaired synergy between COUP TFII and HNF-4 on the HNF-1 promoter results from an alteration of their interaction.
422 10331424 Using the mutated human HNF-4alpha2, we have found that, in the absence of chicken ovalbumin upstream promoter transcription factor II (COUP TFII), the E276Q substitution does not significantly affect the dimerization and transactivating activities of HNF-4alpha, at least on the promoters studied herein.
423 10331424 The impaired synergy between COUP TFII and HNF-4 on the HNF-1 promoter results from an alteration of their interaction.
424 10334325 Mutation in the HNF-4alpha gene affects insulin secretion and triglyceride metabolism.
425 10389854 The functional properties of mutant HNF-4alpha proteins and the molecular mechanisms by which they impair insulin secretion are largely unknown.
426 10417964 To date, mutations in genes of five proteins have been shown to cause MODY: glucokinase (MODY2), hepatic nuclear factor-1 alpha (HNF-1 alpha) (MODY3), hepatic nuclear factor-4 alpha (HNF-4 alpha) (MODY1), insulin promoter factor 1 (IPF-1) (MODY4) and hepatic nuclear factor-1 beta (HNF-1 beta) (MODY5), but other MODY genes still await elucidation.
427 10482964 The most common cause of maturity-onset diabetes of the young (MODY) is a mutation in the hepatic nuclear factor 1alpha (HNF1alpha) gene (MODY3).
428 10484768 Mutations in the homeodomain-containing transcription factor hepatocyte nuclear factor (HNF)-1beta are the cause of one form of maturity-onset diabetes of the young (MODY), type 5 (MODY5).
429 10484768 These studies strongly suggest that heterozygous mutations in the HNF-1beta gene are associated with a syndrome characterized by MODY and severe, non-diabetic renal disease.
430 10484768 Mutations in the homeodomain-containing transcription factor hepatocyte nuclear factor (HNF)-1beta are the cause of one form of maturity-onset diabetes of the young (MODY), type 5 (MODY5).
431 10484768 These studies strongly suggest that heterozygous mutations in the HNF-1beta gene are associated with a syndrome characterized by MODY and severe, non-diabetic renal disease.
432 10491332 Human insulin gene is a target gene of hepatocyte nuclear factor-1alpha (HNF-1alpha) and HNF-1beta.
433 10491332 Maturity-onset diabetes of the young (MODY) is a monogenic form of diabetes characterized by autosomal dominant inheritance, early-onset, and impaired insulin secretion.
434 10491332 The type 3 and type 5 forms of MODY result from mutations in the genes encoding the transcription factor, hepatocyte nuclear factor (HNF)-1alpha and HNF-1beta, respectively.
435 10491332 We studied the effects of wild-type and four mutant (L12H, R263C, P379fsdelCT, and L584S585fsinsTC) HNF-1alpha, which were identified in Japanese subjects with MODY3 on human insulin gene transcription.
436 10491332 Both wild-type (WT) HNF-1alpha and HNF-1beta bound to the oligonucleotide containing the A3 element sequence in the human insulin promoter and transactivated the insulin-luciferase reporter gene by 30- and 31-fold, respectively.
437 10491332 These data suggest that the insulin gene is a candidate target gene of HNF-1alpha/HNF-1beta and the impairment of insulin gene transcription by mutations in the HNF-1 gene might be involved in the pathogenesis of MODY.
438 10491332 Human insulin gene is a target gene of hepatocyte nuclear factor-1alpha (HNF-1alpha) and HNF-1beta.
439 10491332 Maturity-onset diabetes of the young (MODY) is a monogenic form of diabetes characterized by autosomal dominant inheritance, early-onset, and impaired insulin secretion.
440 10491332 The type 3 and type 5 forms of MODY result from mutations in the genes encoding the transcription factor, hepatocyte nuclear factor (HNF)-1alpha and HNF-1beta, respectively.
441 10491332 We studied the effects of wild-type and four mutant (L12H, R263C, P379fsdelCT, and L584S585fsinsTC) HNF-1alpha, which were identified in Japanese subjects with MODY3 on human insulin gene transcription.
442 10491332 Both wild-type (WT) HNF-1alpha and HNF-1beta bound to the oligonucleotide containing the A3 element sequence in the human insulin promoter and transactivated the insulin-luciferase reporter gene by 30- and 31-fold, respectively.
443 10491332 These data suggest that the insulin gene is a candidate target gene of HNF-1alpha/HNF-1beta and the impairment of insulin gene transcription by mutations in the HNF-1 gene might be involved in the pathogenesis of MODY.
444 10491332 Human insulin gene is a target gene of hepatocyte nuclear factor-1alpha (HNF-1alpha) and HNF-1beta.
445 10491332 Maturity-onset diabetes of the young (MODY) is a monogenic form of diabetes characterized by autosomal dominant inheritance, early-onset, and impaired insulin secretion.
446 10491332 The type 3 and type 5 forms of MODY result from mutations in the genes encoding the transcription factor, hepatocyte nuclear factor (HNF)-1alpha and HNF-1beta, respectively.
447 10491332 We studied the effects of wild-type and four mutant (L12H, R263C, P379fsdelCT, and L584S585fsinsTC) HNF-1alpha, which were identified in Japanese subjects with MODY3 on human insulin gene transcription.
448 10491332 Both wild-type (WT) HNF-1alpha and HNF-1beta bound to the oligonucleotide containing the A3 element sequence in the human insulin promoter and transactivated the insulin-luciferase reporter gene by 30- and 31-fold, respectively.
449 10491332 These data suggest that the insulin gene is a candidate target gene of HNF-1alpha/HNF-1beta and the impairment of insulin gene transcription by mutations in the HNF-1 gene might be involved in the pathogenesis of MODY.
450 10588527 Molecular genetics of diabetes mellitus in Chinese subjects: identification of mutations in glucokinase and hepatocyte nuclear factor-1alpha genes in patients with early-onset type 2 diabetes mellitus/MODY.
451 10606640 A MODY3-associated mutation in the HNF1alpha gene, a well-known target gene of HNF4alpha, results in a dramatic loss of the HNF4 binding site in the promoter, indicating that mutations in the HNF4alpha gene might cause MODY through impaired HNF1alpha gene function.
452 10609119 These genes encode hepatocyte nuclear factor-4 alpha (HNF-4 alpha, MODY1), glucokinase (MODY2), hepatocyte nuclear factor-1 alpha (HNF-1 alpha, MODY3), insulin promoter factor-1 (IPF-1, MODY4), and hepatocyte nuclear factor-1 beta (HNF-1 beta, MODY5).
453 10634407 Mutations in the hepatocyte nuclear factor-1alpha (HNF-1alpha) gene are the cause of maturity-onset diabetes of the young type 3 (MODY 3), which is characterized by a severe impairment of insulin secretion and early onset of the disease.
454 10634407 From a large population-based sample of unrelated Japanese patients with type 1 diabetes, 28 patients who lacked autoantibodies to glutamic acid decarboxylase, islet cell antigen 512/insulinoma-associated antigen-2, phogrin (phosphate homolog of granules of insulinoma)/insulinoma-associated antigen-2beta, and insulin at the onset of type 1 diabetes were examined by PCR-based direct sequencing of the 10 exons, flanking introns, and the promoter region of the HNF-1alpha gene.
455 10690901 Several studies have identified evidence for linkage between type 2 diabetes and the regions on chromosomes 12 and 20 containing the maturity-onset diabetes of the young (MODY) genes, hepatocyte nuclear factor-1alpha (HNF-1alpha) and HNF-4alpha.
456 10690901 Loci contributing sibling recurrence risks, relative to the general population risk, of 1.75 and 1.25 could be excluded for the HNF-1alpha and HNF-4alpha regions, respectively.
457 10690901 Several studies have identified evidence for linkage between type 2 diabetes and the regions on chromosomes 12 and 20 containing the maturity-onset diabetes of the young (MODY) genes, hepatocyte nuclear factor-1alpha (HNF-1alpha) and HNF-4alpha.
458 10690901 Loci contributing sibling recurrence risks, relative to the general population risk, of 1.75 and 1.25 could be excluded for the HNF-1alpha and HNF-4alpha regions, respectively.
459 10694920 Three novel missense mutations in the glucokinase gene (G80S; E221K; G227C) in Italian subjects with maturity-onset diabetes of the young (MODY).
460 10694920 The maturity-onset diabetes of the young (MODY), an autosomal dominant form of non-insulin dependent diabetes mellitus (NIDDM), is caused by mutations in the glucokinase (GK, MODY 2) and in the hepatocyte nuclear factor 1a (MODY 3) and 4a (MODY 1) genes.
461 10694920 We have screened the glucokinase gene by the polymerase chain reaction (PCR) and denaturing gradient gel electrophoresis (DGGE) in fifteen subjects with clinical characteristics of MODY and one parent with NIDDM, impaired glucose tolerance or gestational diabetes.
462 10694920 Three novel missense mutations in the glucokinase gene (G80S; E221K; G227C) in Italian subjects with maturity-onset diabetes of the young (MODY).
463 10694920 The maturity-onset diabetes of the young (MODY), an autosomal dominant form of non-insulin dependent diabetes mellitus (NIDDM), is caused by mutations in the glucokinase (GK, MODY 2) and in the hepatocyte nuclear factor 1a (MODY 3) and 4a (MODY 1) genes.
464 10694920 We have screened the glucokinase gene by the polymerase chain reaction (PCR) and denaturing gradient gel electrophoresis (DGGE) in fifteen subjects with clinical characteristics of MODY and one parent with NIDDM, impaired glucose tolerance or gestational diabetes.
465 10694920 Three novel missense mutations in the glucokinase gene (G80S; E221K; G227C) in Italian subjects with maturity-onset diabetes of the young (MODY).
466 10694920 The maturity-onset diabetes of the young (MODY), an autosomal dominant form of non-insulin dependent diabetes mellitus (NIDDM), is caused by mutations in the glucokinase (GK, MODY 2) and in the hepatocyte nuclear factor 1a (MODY 3) and 4a (MODY 1) genes.
467 10694920 We have screened the glucokinase gene by the polymerase chain reaction (PCR) and denaturing gradient gel electrophoresis (DGGE) in fifteen subjects with clinical characteristics of MODY and one parent with NIDDM, impaired glucose tolerance or gestational diabetes.
468 10720084 Maturity-onset diabetes of the young (MODY) now exists in five subtypes (MODY1-5), four of which are caused by mutations in transcription factors hepatocyte nuclear factor-4alpha (HNF-4alpha), HNF-1alpha, insulin promoter factor-1 (IPF-1), and HNF-1beta (MODY1, -3, -4, and -5).
469 10720084 Thus, highlighting the potential role of this transcription factor in the genetic basis of Danish and Italian MODY as well as in Danish patients with late-onset type 2 diabetes mellitus, we have examined the human IPF-1 gene for mutations by single strand conformation polymorphism and heteroduplex analysis in 200 Danish patients with late-onset type 2 diabetes and in 44 Danish and Italian MODY patients.
470 10720084 We conclude that variants in IPF-1 are not a common cause of MODY or late-onset type 2 diabetes in the Caucasian population, and that in terms of insulin transcription both the N76 and the T140 mutations are likely to represent functionally normal IPF-1 variants with no direct role in the pathogenesis of MODY or late-onset type 2 diabetes mellitus.
471 10720084 Maturity-onset diabetes of the young (MODY) now exists in five subtypes (MODY1-5), four of which are caused by mutations in transcription factors hepatocyte nuclear factor-4alpha (HNF-4alpha), HNF-1alpha, insulin promoter factor-1 (IPF-1), and HNF-1beta (MODY1, -3, -4, and -5).
472 10720084 Thus, highlighting the potential role of this transcription factor in the genetic basis of Danish and Italian MODY as well as in Danish patients with late-onset type 2 diabetes mellitus, we have examined the human IPF-1 gene for mutations by single strand conformation polymorphism and heteroduplex analysis in 200 Danish patients with late-onset type 2 diabetes and in 44 Danish and Italian MODY patients.
473 10720084 We conclude that variants in IPF-1 are not a common cause of MODY or late-onset type 2 diabetes in the Caucasian population, and that in terms of insulin transcription both the N76 and the T140 mutations are likely to represent functionally normal IPF-1 variants with no direct role in the pathogenesis of MODY or late-onset type 2 diabetes mellitus.
474 10720084 Maturity-onset diabetes of the young (MODY) now exists in five subtypes (MODY1-5), four of which are caused by mutations in transcription factors hepatocyte nuclear factor-4alpha (HNF-4alpha), HNF-1alpha, insulin promoter factor-1 (IPF-1), and HNF-1beta (MODY1, -3, -4, and -5).
475 10720084 Thus, highlighting the potential role of this transcription factor in the genetic basis of Danish and Italian MODY as well as in Danish patients with late-onset type 2 diabetes mellitus, we have examined the human IPF-1 gene for mutations by single strand conformation polymorphism and heteroduplex analysis in 200 Danish patients with late-onset type 2 diabetes and in 44 Danish and Italian MODY patients.
476 10720084 We conclude that variants in IPF-1 are not a common cause of MODY or late-onset type 2 diabetes in the Caucasian population, and that in terms of insulin transcription both the N76 and the T140 mutations are likely to represent functionally normal IPF-1 variants with no direct role in the pathogenesis of MODY or late-onset type 2 diabetes mellitus.
477 10768087 This has been shown to be the primary cause of the disease in the various forms of maturity-onset diabetes of the young (MODY) and has also been implicated in adult-onset Type II (non-insulin-dependent) diabetes mellitus.
478 10793405 Only a minority of cases of type 2 diabetes are caused by a single-gene defect, such as maturity-onset diabetes of youth (mutated MODY gene), syndrome of insulin resistance (insulin receptor defect), and maternally inherited diabetes and deafness (mitochondrial gene defect).
479 10866048 Reduced pancreatic polypeptide response to hypoglycemia and amylin response to arginine in subjects with a mutation in the HNF-4alpha/MODY1 gene.
480 10866048 Subjects with the Q268X mutation in the hepatocyte nuclear factor (HNF)-4alpha gene (RW pedigree/maturity-onset diabetes of the young [MODY]-1) have diminished insulin and glucagon secretory responses to arginine.
481 10866048 To determine if pancreatic polypeptide (PP) secretion is likewise involved, we studied PP responses to insulin-induced hypoglycemia in 17 RW pedigree members: 6 nondiabetic mutation-negative [ND(-)], 4 nondiabetic mutation-positive [ND(+)], and 7 diabetic mutation-positive [D(+)].
482 10866048 These results suggest that the HNF-4alpha mutation in the RW/MODY1 pedigree confers a generalized defect in islet cell function involving PP cells in addition to beta- and alpha-cells, and beta-cell impairment involving proportional deficits in insulin and amylin secretion.
483 10866048 Reduced pancreatic polypeptide response to hypoglycemia and amylin response to arginine in subjects with a mutation in the HNF-4alpha/MODY1 gene.
484 10866048 Subjects with the Q268X mutation in the hepatocyte nuclear factor (HNF)-4alpha gene (RW pedigree/maturity-onset diabetes of the young [MODY]-1) have diminished insulin and glucagon secretory responses to arginine.
485 10866048 To determine if pancreatic polypeptide (PP) secretion is likewise involved, we studied PP responses to insulin-induced hypoglycemia in 17 RW pedigree members: 6 nondiabetic mutation-negative [ND(-)], 4 nondiabetic mutation-positive [ND(+)], and 7 diabetic mutation-positive [D(+)].
486 10866048 These results suggest that the HNF-4alpha mutation in the RW/MODY1 pedigree confers a generalized defect in islet cell function involving PP cells in addition to beta- and alpha-cells, and beta-cell impairment involving proportional deficits in insulin and amylin secretion.
487 10866048 Reduced pancreatic polypeptide response to hypoglycemia and amylin response to arginine in subjects with a mutation in the HNF-4alpha/MODY1 gene.
488 10866048 Subjects with the Q268X mutation in the hepatocyte nuclear factor (HNF)-4alpha gene (RW pedigree/maturity-onset diabetes of the young [MODY]-1) have diminished insulin and glucagon secretory responses to arginine.
489 10866048 To determine if pancreatic polypeptide (PP) secretion is likewise involved, we studied PP responses to insulin-induced hypoglycemia in 17 RW pedigree members: 6 nondiabetic mutation-negative [ND(-)], 4 nondiabetic mutation-positive [ND(+)], and 7 diabetic mutation-positive [D(+)].
490 10866048 These results suggest that the HNF-4alpha mutation in the RW/MODY1 pedigree confers a generalized defect in islet cell function involving PP cells in addition to beta- and alpha-cells, and beta-cell impairment involving proportional deficits in insulin and amylin secretion.
491 10868948 Mutations in the transcription factors hepatocyte nuclear factor (HNF)-4alpha and -1alpha, insulin promoter factor-1, and HNF-1beta are the causes of four forms of maturity-onset diabetes of the young (MODY1 and 3-5, respectively).
492 10868948 The winged-helix transcription factor HNF-3beta has been implicated in the regulation of expression of each of these MODY genes, suggesting that mutations in the HNF-3beta gene (HNF3B) may also cause MODY.
493 10868948 Mutations in the transcription factors hepatocyte nuclear factor (HNF)-4alpha and -1alpha, insulin promoter factor-1, and HNF-1beta are the causes of four forms of maturity-onset diabetes of the young (MODY1 and 3-5, respectively).
494 10868948 The winged-helix transcription factor HNF-3beta has been implicated in the regulation of expression of each of these MODY genes, suggesting that mutations in the HNF-3beta gene (HNF3B) may also cause MODY.
495 10868949 Because the HNF-3beta gene is implicated in this network, we screened it for mutations in 21 probands of French ancestry with clinical diagnosis of MODY and early-onset type 2 diabetes.
496 10868949 All of the five known MODY genes, HNF-4alpha, glucokinase, HNF-1alpha, HNF-1beta, and IPF1, were previously excluded as being the cause of diabetes in these families.
497 10868949 Because the HNF-3beta gene is implicated in this network, we screened it for mutations in 21 probands of French ancestry with clinical diagnosis of MODY and early-onset type 2 diabetes.
498 10868949 All of the five known MODY genes, HNF-4alpha, glucokinase, HNF-1alpha, HNF-1beta, and IPF1, were previously excluded as being the cause of diabetes in these families.
499 10899756 Gene expression studies have shown that HNF3 proteins are critical regulators of the early-onset type 2 diabetes genes HNF-1 alpha, HNF-4 alpha and IPF-1/PDX-1 (MODY3, 1 and 4, respectively) and of glucagon transcription and pancreatic alpha-cell function.
500 10905494 Genotype/phenotype relationships in HNF-4alpha/MODY1: haploinsufficiency is associated with reduced apolipoprotein (AII), apolipoprotein (CIII), lipoprotein(a), and triglyceride levels.
501 10905494 Heterozygous mutations in the HNF-4alpha gene are responsible for maturity-onset diabetes of the young 1 (MODY1), which is characterized by pancreatic beta-cell-deficient insulin secretion.
502 10905494 In this study, we have identified HNF-4alpha target genes that are mainly expressed in the liver, including alpha1-antitrypsin, alpha1-antichymotrypsin, alpha-fetal protein, ceruloplasmin, IGF binding protein 1, transferrin, apolipoprotein(AI) [apo(AI)], apo(AII), apo(B), and apo(CIII).
503 10905494 Genotype/phenotype relationships in HNF-4alpha/MODY1: haploinsufficiency is associated with reduced apolipoprotein (AII), apolipoprotein (CIII), lipoprotein(a), and triglyceride levels.
504 10905494 Heterozygous mutations in the HNF-4alpha gene are responsible for maturity-onset diabetes of the young 1 (MODY1), which is characterized by pancreatic beta-cell-deficient insulin secretion.
505 10905494 In this study, we have identified HNF-4alpha target genes that are mainly expressed in the liver, including alpha1-antitrypsin, alpha1-antichymotrypsin, alpha-fetal protein, ceruloplasmin, IGF binding protein 1, transferrin, apolipoprotein(AI) [apo(AI)], apo(AII), apo(B), and apo(CIII).
506 10905494 Genotype/phenotype relationships in HNF-4alpha/MODY1: haploinsufficiency is associated with reduced apolipoprotein (AII), apolipoprotein (CIII), lipoprotein(a), and triglyceride levels.
507 10905494 Heterozygous mutations in the HNF-4alpha gene are responsible for maturity-onset diabetes of the young 1 (MODY1), which is characterized by pancreatic beta-cell-deficient insulin secretion.
508 10905494 In this study, we have identified HNF-4alpha target genes that are mainly expressed in the liver, including alpha1-antitrypsin, alpha1-antichymotrypsin, alpha-fetal protein, ceruloplasmin, IGF binding protein 1, transferrin, apolipoprotein(AI) [apo(AI)], apo(AII), apo(B), and apo(CIII).
509 10922486 In the liver of streptozotocin-induced diabetic rat, mRNA and protein levels for HNF-4alpha were elevated, and were normalized by insulin treatment.
510 10940385 Since pancreatic beta-cell dysfunction is a feature of MODY1 patients, we compared the functional properties of the R154X mutant in insulin-secreting pancreatic beta-cells and non-beta-cells.
511 10943822 Mutations in hepatocyte nuclear factor-4alpha, hepatocyte nuclear factor-1alpha, insulin promoter factor-1 and hepatocyte nuclear factor-1beta, respectively, cause MODY1, MODY3, MODY4, and MODY5.
512 10946909 Variability of the insulin receptor substrate-1, hepatocyte nuclear factor-1alpha (HNF-1alpha), HNF-4alpha, and HNF-6 genes and size at birth in a population-based sample of young Danish subjects.
513 10946909 The Gly/Arg972 of insulin receptor substrate-1 (IRS-1), the Thr/Ile130 of the hepatocyte nuclear factor-4alpha (HNF-4alpha), the Pro/Ala75 of HNF-6, and the Ile/Leu27, Ala/Val93, and Ser/Asn4s7 polymorphisms of the HNF-lalpha gene were examined for association with birth weight and length and the ponderal index.
514 10946909 In conclusion, common variability in the genes encoding the IRS-1, HNF-lalpha, HNF-4alpha, and HNF-6 proteins can be excluded as major factors influencing size at birth among Danish Caucasian subjects.
515 10946909 Variability of the insulin receptor substrate-1, hepatocyte nuclear factor-1alpha (HNF-1alpha), HNF-4alpha, and HNF-6 genes and size at birth in a population-based sample of young Danish subjects.
516 10946909 The Gly/Arg972 of insulin receptor substrate-1 (IRS-1), the Thr/Ile130 of the hepatocyte nuclear factor-4alpha (HNF-4alpha), the Pro/Ala75 of HNF-6, and the Ile/Leu27, Ala/Val93, and Ser/Asn4s7 polymorphisms of the HNF-lalpha gene were examined for association with birth weight and length and the ponderal index.
517 10946909 In conclusion, common variability in the genes encoding the IRS-1, HNF-lalpha, HNF-4alpha, and HNF-6 proteins can be excluded as major factors influencing size at birth among Danish Caucasian subjects.
518 10946909 Variability of the insulin receptor substrate-1, hepatocyte nuclear factor-1alpha (HNF-1alpha), HNF-4alpha, and HNF-6 genes and size at birth in a population-based sample of young Danish subjects.
519 10946909 The Gly/Arg972 of insulin receptor substrate-1 (IRS-1), the Thr/Ile130 of the hepatocyte nuclear factor-4alpha (HNF-4alpha), the Pro/Ala75 of HNF-6, and the Ile/Leu27, Ala/Val93, and Ser/Asn4s7 polymorphisms of the HNF-lalpha gene were examined for association with birth weight and length and the ponderal index.
520 10946909 In conclusion, common variability in the genes encoding the IRS-1, HNF-lalpha, HNF-4alpha, and HNF-6 proteins can be excluded as major factors influencing size at birth among Danish Caucasian subjects.
521 10953613 Mutations in the glucokinase gene and the genes for the transcription factors HNF-1 alpha, HNF-4 alpha, IPF-1, HNF-1 beta y HNF-3 beta have been demonstrated to cause MODY, a subtype of NIDDM characterized by autosomal dominate pattern of inheritance and an early-onset.
522 10953613 Mutations in any of the genes associated to MODY may contribute to the insulin secretion deficiency frequently observed in early-onset type 2 diabetic patients.
523 10953613 Mutations in the glucokinase gene and the genes for the transcription factors HNF-1 alpha, HNF-4 alpha, IPF-1, HNF-1 beta y HNF-3 beta have been demonstrated to cause MODY, a subtype of NIDDM characterized by autosomal dominate pattern of inheritance and an early-onset.
524 10953613 Mutations in any of the genes associated to MODY may contribute to the insulin secretion deficiency frequently observed in early-onset type 2 diabetic patients.
525 10967107 During pancreatic development, the paired homeodomain transcription factor PAX4 is required for the differentiation of the insulin-producing beta cells and somatostatin-producing delta cells.
526 10967107 Serial deletions through this region reveal the presence of positive elements that bind several pancreatic transcription factors as follows: the POU homeodomain factor HNF1alpha, the orphan nuclear receptor HNF4alpha, the homeodomain factor PDX1, and a heterodimer composed of two basic helix-loop-helix factors.
527 10967120 Mutations in the HNF4alpha gene are associated with the subtype 1 of maturity-onset diabetes of the young (MODY1), which is characterized by impaired insulin secretory response to glucose in pancreatic beta-cells.
528 10967120 The tetracycline-inducible system was employed to achieve tightly controlled expression of both wild type (WT) and dominant-negative mutant (DN) of HNF4alpha in INS-1 cells.
529 10967120 Quantitative evaluation of HNF4alpha-regulated pancreatic beta-cell gene expression revealed altered mRNA levels of insulin, glucose transporter-2, L-pyruvate kinase, aldolase B, 2-oxoglutarate dehydrogenase E1 subunit, and mitochondrial uncoupling protein-2.
530 10967120 Indeed, HNF4alpha changed the HNF1alpha mRNA levels and HNF1alpha promoter luciferase activity through altered HNF4alpha binding.
531 10967120 Mutations in the HNF4alpha gene are associated with the subtype 1 of maturity-onset diabetes of the young (MODY1), which is characterized by impaired insulin secretory response to glucose in pancreatic beta-cells.
532 10967120 The tetracycline-inducible system was employed to achieve tightly controlled expression of both wild type (WT) and dominant-negative mutant (DN) of HNF4alpha in INS-1 cells.
533 10967120 Quantitative evaluation of HNF4alpha-regulated pancreatic beta-cell gene expression revealed altered mRNA levels of insulin, glucose transporter-2, L-pyruvate kinase, aldolase B, 2-oxoglutarate dehydrogenase E1 subunit, and mitochondrial uncoupling protein-2.
534 10967120 Indeed, HNF4alpha changed the HNF1alpha mRNA levels and HNF1alpha promoter luciferase activity through altered HNF4alpha binding.
535 10967120 Mutations in the HNF4alpha gene are associated with the subtype 1 of maturity-onset diabetes of the young (MODY1), which is characterized by impaired insulin secretory response to glucose in pancreatic beta-cells.
536 10967120 The tetracycline-inducible system was employed to achieve tightly controlled expression of both wild type (WT) and dominant-negative mutant (DN) of HNF4alpha in INS-1 cells.
537 10967120 Quantitative evaluation of HNF4alpha-regulated pancreatic beta-cell gene expression revealed altered mRNA levels of insulin, glucose transporter-2, L-pyruvate kinase, aldolase B, 2-oxoglutarate dehydrogenase E1 subunit, and mitochondrial uncoupling protein-2.
538 10967120 Indeed, HNF4alpha changed the HNF1alpha mRNA levels and HNF1alpha promoter luciferase activity through altered HNF4alpha binding.
539 10980542 Proposed mechanism for a novel insertion/deletion frameshift mutation (I414G415ATCG-->CCA) in the hepatocyte nuclear factor 1 alpha (HNF-1 alpha) gene which causes maturity-onset diabetes of the young (MODY).
540 10980542 Maturity-onset diabetes of the young (MODY) is a monogenic subgroup of non-insulin dependent diabetes (NIDDM) characterized by an early age of diagnosis (usually < 25 years) and an autosomal dominant mode of inheritance.
541 10980542 Mutations in the hepatocyte nuclear factor 1 alpha (HNF-1alpha) [MODY3] gene represent the most common cause of MODY in the UK and a common cause of MODY in many other populations.
542 10980542 Proposed mechanism for a novel insertion/deletion frameshift mutation (I414G415ATCG-->CCA) in the hepatocyte nuclear factor 1 alpha (HNF-1 alpha) gene which causes maturity-onset diabetes of the young (MODY).
543 10980542 Maturity-onset diabetes of the young (MODY) is a monogenic subgroup of non-insulin dependent diabetes (NIDDM) characterized by an early age of diagnosis (usually < 25 years) and an autosomal dominant mode of inheritance.
544 10980542 Mutations in the hepatocyte nuclear factor 1 alpha (HNF-1alpha) [MODY3] gene represent the most common cause of MODY in the UK and a common cause of MODY in many other populations.
545 10980542 Proposed mechanism for a novel insertion/deletion frameshift mutation (I414G415ATCG-->CCA) in the hepatocyte nuclear factor 1 alpha (HNF-1 alpha) gene which causes maturity-onset diabetes of the young (MODY).
546 10980542 Maturity-onset diabetes of the young (MODY) is a monogenic subgroup of non-insulin dependent diabetes (NIDDM) characterized by an early age of diagnosis (usually < 25 years) and an autosomal dominant mode of inheritance.
547 10980542 Mutations in the hepatocyte nuclear factor 1 alpha (HNF-1alpha) [MODY3] gene represent the most common cause of MODY in the UK and a common cause of MODY in many other populations.
548 10983627 To investigate the possibility that the HNF-4alpha gene contributes to the onset of non-insulin-dependent diabetes mellitus (NIDDM) in Japanese patients, we screened all exons and flanking introns of this gene for mutations in 100 patients with NIDDM diagnosed after 25 years of age.
549 10990086 No diabetes-associated mutations in the coding region of the hepatocyte nuclear factor-4gamma gene (HNF4G) in Japanese patients with MODY.
550 10993727 Hepatocyte nuclear factor 4alpha (HNF4alpha) (NR2A1), an orphan member of the nuclear receptor superfamily, binds DNA exclusively as a homodimer even though it is very similar in amino acid sequence to retinoid X receptor alpha (RXRalpha), which heterodimerizes readily with other receptors.
551 10993727 When K300 (in helix 9) and E327 (in helix 10) of HNF4alpha1 were converted to the analogous residues in RXRalpha (E390 and K417, respectively) the resulting construct did not heterodimerize with the wild-type HNF4alpha, although it was still able to form homodimers and bind DNA.
552 10993727 Furthermore, the double mutant did not heterodimerize with RXR or RAR but was still able to dimerize in solution with an HNF4alpha construct truncated at amino acid residue 268.
553 10993727 Hepatocyte nuclear factor 4alpha (HNF4alpha) (NR2A1), an orphan member of the nuclear receptor superfamily, binds DNA exclusively as a homodimer even though it is very similar in amino acid sequence to retinoid X receptor alpha (RXRalpha), which heterodimerizes readily with other receptors.
554 10993727 When K300 (in helix 9) and E327 (in helix 10) of HNF4alpha1 were converted to the analogous residues in RXRalpha (E390 and K417, respectively) the resulting construct did not heterodimerize with the wild-type HNF4alpha, although it was still able to form homodimers and bind DNA.
555 10993727 Furthermore, the double mutant did not heterodimerize with RXR or RAR but was still able to dimerize in solution with an HNF4alpha construct truncated at amino acid residue 268.
556 10993727 Hepatocyte nuclear factor 4alpha (HNF4alpha) (NR2A1), an orphan member of the nuclear receptor superfamily, binds DNA exclusively as a homodimer even though it is very similar in amino acid sequence to retinoid X receptor alpha (RXRalpha), which heterodimerizes readily with other receptors.
557 10993727 When K300 (in helix 9) and E327 (in helix 10) of HNF4alpha1 were converted to the analogous residues in RXRalpha (E390 and K417, respectively) the resulting construct did not heterodimerize with the wild-type HNF4alpha, although it was still able to form homodimers and bind DNA.
558 10993727 Furthermore, the double mutant did not heterodimerize with RXR or RAR but was still able to dimerize in solution with an HNF4alpha construct truncated at amino acid residue 268.
559 11058894 MODY is genetically heterogeneous with five different genes identified to date: hepatocyte nuclear factor-4 alpha (HNF-4 alpha) [MODY1]; glucokinase [MODY2]; hepatocyte nuclear factor-1 alpha (HNF-1 alpha) [MODY3]; insulin promoter factor-1 (IPF-1) [MODY4]; and hepatocyte nuclear factor-1 beta (HNF-1 beta) [MODY5].
560 11058894 Mutations in the HNF-1 alpha gene represent a common cause of MODY in the majority of populations studied.
561 11058894 The identification of an HNF-1 alpha gene mutation in a patient with type 2 diabetes confirms the diagnosis of MODY and has important implications for clinical management.
562 11058894 MODY is genetically heterogeneous with five different genes identified to date: hepatocyte nuclear factor-4 alpha (HNF-4 alpha) [MODY1]; glucokinase [MODY2]; hepatocyte nuclear factor-1 alpha (HNF-1 alpha) [MODY3]; insulin promoter factor-1 (IPF-1) [MODY4]; and hepatocyte nuclear factor-1 beta (HNF-1 beta) [MODY5].
563 11058894 Mutations in the HNF-1 alpha gene represent a common cause of MODY in the majority of populations studied.
564 11058894 The identification of an HNF-1 alpha gene mutation in a patient with type 2 diabetes confirms the diagnosis of MODY and has important implications for clinical management.
565 11058894 MODY is genetically heterogeneous with five different genes identified to date: hepatocyte nuclear factor-4 alpha (HNF-4 alpha) [MODY1]; glucokinase [MODY2]; hepatocyte nuclear factor-1 alpha (HNF-1 alpha) [MODY3]; insulin promoter factor-1 (IPF-1) [MODY4]; and hepatocyte nuclear factor-1 beta (HNF-1 beta) [MODY5].
566 11058894 Mutations in the HNF-1 alpha gene represent a common cause of MODY in the majority of populations studied.
567 11058894 The identification of an HNF-1 alpha gene mutation in a patient with type 2 diabetes confirms the diagnosis of MODY and has important implications for clinical management.
568 11078465 beta-cell transcription factors and diabetes: no evidence for diabetes-associated mutations in the gene encoding the basic helix-loop-helix transcription factor neurogenic differentiation 4 (NEUROD4) in Japanese patients with MODY.
569 11078465 We have screened 57 unrelated Japanese subjects with a clinical diagnosis of MODY for mutations in the NeuroD4/Math-3/ATH-3 gene (NEUROD4).
570 11136233 The ability of the orphan nuclear receptor small heterodimer partner (SHP, NR0B2) to modulate the transcriptional activity of MODY1 protein, the nuclear receptor HNF-4alpha, suggested SHP as a candidate MODY gene.
571 11162430 During a screening of Norwegian patients with suspected MODY we identified two novel HNF-1alpha mutations, P112L and Q466X.
572 11202217 The subgroups that result in non-insulin-dependent DM in children are as follows: the 'honeymoon' phase of type 1 DM, type 2 DM, genetic syndromes accompanied by DM, and maturity-onset diabetes of the young (MODY).
573 11202217 It should be emphasized that MODY comprises two discrete clinical syndromes: glucokinase diabetes and transcription factor diabetes, the latter of which results from mutations in the genes encoding hepatocyte nuclear factor (HNF)-1alpha, HNF-1beta, HNF-4alpha and insulin promoter factor-1.
574 11202217 The subgroups that result in non-insulin-dependent DM in children are as follows: the 'honeymoon' phase of type 1 DM, type 2 DM, genetic syndromes accompanied by DM, and maturity-onset diabetes of the young (MODY).
575 11202217 It should be emphasized that MODY comprises two discrete clinical syndromes: glucokinase diabetes and transcription factor diabetes, the latter of which results from mutations in the genes encoding hepatocyte nuclear factor (HNF)-1alpha, HNF-1beta, HNF-4alpha and insulin promoter factor-1.
576 11215856 After excluding 14 subjects with pancreatic calcification, Wolfram's syndrome, MODY or mitochondrial gene mutation, 45 (57.0%) were found to be insulin-deficient and 34 (43.0%) were insulin-sufficient based on post-glucagon C-peptide levels.
577 11232004 Among this group we found two individuals carrying missense mutations in exon 4 of the hepatocyte nuclear factor-1alpha (HNF-4alpha) gene (Asp(126)-->His/Tyr and Arg(154)-->Gln, respectively) and one carrying a nonsense mutation in exon 7 of the HNF-1alpha gene (Gln(486)-->stop codon); 7.5% had positive titers for glutamic acid decarboxylase antibodies.
578 11232004 Mutations in either the HNF-1alpha or the HNF-4alpha genes are present among the individuals who develop early-onset diabetes in our population.
579 11232004 Among this group we found two individuals carrying missense mutations in exon 4 of the hepatocyte nuclear factor-1alpha (HNF-4alpha) gene (Asp(126)-->His/Tyr and Arg(154)-->Gln, respectively) and one carrying a nonsense mutation in exon 7 of the HNF-1alpha gene (Gln(486)-->stop codon); 7.5% had positive titers for glutamic acid decarboxylase antibodies.
580 11232004 Mutations in either the HNF-1alpha or the HNF-4alpha genes are present among the individuals who develop early-onset diabetes in our population.
581 11272165 Mutations in the beta-cell genes encoding the glycolytic enzyme glucokinase (GCK) and the transcription factor hepatocyte nuclear factor (HNF)-1alpha are the most common causes of maturity-onset diabetes of the young (MODY).
582 11272165 We studied 178 U.K. and French MODY family members, including 45 GCK mutation carriers and 40 HNF-1alpha mutation carriers.
583 11272165 Homeostasis model assessment of fasting insulin and glucose showed reduced beta-cell function in both GCK (48% controls, P<0.0001) and HNF-1alpha (42% controls, P<0.0001).
584 11272165 Insulin sensitivity was similar to that of control subjects in the GCK subjects (93% controls, P = 0.78) but increased in the HNF-1alpha subjects (134.5% controls, P = 0.005).
585 11272165 Proinsulin-to-insulin ratios are increased in HNF-1alpha subjects (29.5%) but not in GCK (18.5%) subjects.
586 11272165 The defect in GCK is a stable defect of glucose sensing, whereas the HNF-1alpha mutation causes a progressive defect that alters beta-cell insulin secretion directly rather than the sensing of glucose.
587 11272165 Mutations in the beta-cell genes encoding the glycolytic enzyme glucokinase (GCK) and the transcription factor hepatocyte nuclear factor (HNF)-1alpha are the most common causes of maturity-onset diabetes of the young (MODY).
588 11272165 We studied 178 U.K. and French MODY family members, including 45 GCK mutation carriers and 40 HNF-1alpha mutation carriers.
589 11272165 Homeostasis model assessment of fasting insulin and glucose showed reduced beta-cell function in both GCK (48% controls, P<0.0001) and HNF-1alpha (42% controls, P<0.0001).
590 11272165 Insulin sensitivity was similar to that of control subjects in the GCK subjects (93% controls, P = 0.78) but increased in the HNF-1alpha subjects (134.5% controls, P = 0.005).
591 11272165 Proinsulin-to-insulin ratios are increased in HNF-1alpha subjects (29.5%) but not in GCK (18.5%) subjects.
592 11272165 The defect in GCK is a stable defect of glucose sensing, whereas the HNF-1alpha mutation causes a progressive defect that alters beta-cell insulin secretion directly rather than the sensing of glucose.
593 11272211 beta-Cell transcription factor genes are important in the pathophysiology of the beta-cell, with mutations in hepatocyte nuclear factor (HNF)-1alpha, HNF-4alpha, insulin promoter factor (IPF)-1, HNF-1beta, and NeuroD1/BETA2, all resulting in early-onset type 2 diabetes.
594 11272211 The relative distribution of the 90 families fitting maturity-onset diabetes of the young (MODY) criteria was 63% HNF-1alpha, 2% HNF-4alpha, 0% IPF-1, 1% HNF-1beta, 0% NeuroD1/ BETA2, and 20% glucokinase.
595 11272211 IPF-1 mutations are associated with a higher age at diagnosis (42.7 years) than HNF-1alpha (20.4 years), HNF-1beta (24.2 years), or HNF-4alpha (26.3 years) gene mutations.
596 11272211 beta-Cell transcription factor genes are important in the pathophysiology of the beta-cell, with mutations in hepatocyte nuclear factor (HNF)-1alpha, HNF-4alpha, insulin promoter factor (IPF)-1, HNF-1beta, and NeuroD1/BETA2, all resulting in early-onset type 2 diabetes.
597 11272211 The relative distribution of the 90 families fitting maturity-onset diabetes of the young (MODY) criteria was 63% HNF-1alpha, 2% HNF-4alpha, 0% IPF-1, 1% HNF-1beta, 0% NeuroD1/ BETA2, and 20% glucokinase.
598 11272211 IPF-1 mutations are associated with a higher age at diagnosis (42.7 years) than HNF-1alpha (20.4 years), HNF-1beta (24.2 years), or HNF-4alpha (26.3 years) gene mutations.
599 11272211 beta-Cell transcription factor genes are important in the pathophysiology of the beta-cell, with mutations in hepatocyte nuclear factor (HNF)-1alpha, HNF-4alpha, insulin promoter factor (IPF)-1, HNF-1beta, and NeuroD1/BETA2, all resulting in early-onset type 2 diabetes.
600 11272211 The relative distribution of the 90 families fitting maturity-onset diabetes of the young (MODY) criteria was 63% HNF-1alpha, 2% HNF-4alpha, 0% IPF-1, 1% HNF-1beta, 0% NeuroD1/ BETA2, and 20% glucokinase.
601 11272211 IPF-1 mutations are associated with a higher age at diagnosis (42.7 years) than HNF-1alpha (20.4 years), HNF-1beta (24.2 years), or HNF-4alpha (26.3 years) gene mutations.
602 11293229 These are hepatocyte nuclear factor (HNF)-4 alpha, HNF-1 alpha, insulin promoter factor (IPF)-1 and HNF-1 beta, which are associated with MODY1, 3, 4, 5 respectively.
603 11293229 HNF-1 beta (MODY5 locus on chromosome 17q) is a protein which forms heterodimers with HNF-1 alpha.
604 11293229 This rare form of diabetes has a clinical picture similar to MODY1 and MODY3.
605 11293229 BETA 2/Neurod1 has been recently associated with MODY by Dr Krolewski's group from Joslin Diabetes Center, Boston, MA, USA.
606 11293229 These are hepatocyte nuclear factor (HNF)-4 alpha, HNF-1 alpha, insulin promoter factor (IPF)-1 and HNF-1 beta, which are associated with MODY1, 3, 4, 5 respectively.
607 11293229 HNF-1 beta (MODY5 locus on chromosome 17q) is a protein which forms heterodimers with HNF-1 alpha.
608 11293229 This rare form of diabetes has a clinical picture similar to MODY1 and MODY3.
609 11293229 BETA 2/Neurod1 has been recently associated with MODY by Dr Krolewski's group from Joslin Diabetes Center, Boston, MA, USA.
610 11293229 These are hepatocyte nuclear factor (HNF)-4 alpha, HNF-1 alpha, insulin promoter factor (IPF)-1 and HNF-1 beta, which are associated with MODY1, 3, 4, 5 respectively.
611 11293229 HNF-1 beta (MODY5 locus on chromosome 17q) is a protein which forms heterodimers with HNF-1 alpha.
612 11293229 This rare form of diabetes has a clinical picture similar to MODY1 and MODY3.
613 11293229 BETA 2/Neurod1 has been recently associated with MODY by Dr Krolewski's group from Joslin Diabetes Center, Boston, MA, USA.
614 11296231 Transcription factor-dependent regulation of CBP and P/CAF histone acetyltransferase activity.
615 11296231 CREB-binding protein (CBP) and CBP-associated factor (P/CAF) are coactivators possessing an intrinsic histone acetyltransferase (HAT) activity.
616 11296231 Here we show that two dominant-negative mutants of hepatocyte nuclear factor-1alpha (HNF-1alpha), P447L and P519L, occurring in maturity onset diabetes of the young (MODY3) patients, exhibit paradoxically stronger interactions than the wild-type protein with either CBP or P/CAF.
617 11296231 However, CBP and P/CAF recruited by these mutants lack HAT activity.
618 11296231 In contrast, wild-type HNF-1alpha and other transcription factors, such as Sp1 or HNF-4, stimulated the HAT activity of CBP.
619 11307309 This form of diabetes can result from mutations in at least seven different genes: hepatocyte nuclear factor(HNF)-4 alpha/MODY1, glucokinase/MODY2, HNF-1 alpha/MODY3, insulin promoter factor(IPF-1)/MODY4, HNF-1 beta/MODY5, NeuroD1/MODY6 and Islet(Isl)-1/MODY7.
620 11307309 Mutations in HNF-1 alpha/MODY3 are the most common cause of MODY in Japanese identified to date accounting for about 15% of cases of MODY.
621 11307309 Mutations in the HNF-4 alpha/MODY1, glucokinase/MODY2, HNF-1 beta/MODY5 and Isl-1/MODY7 genes have also been found in Japanese; however, they are rare causes of MODY.
622 11307309 Patients who have mutations in the HNF-1 beta/MODY5 gene have non-diabetic kidney dysfunction including renal cysts.
623 11307309 Genetic approach for type 2 diabetes had done by using non-parameteric linkage analysis such as sibpair analysis which worked well and NIDDM1 and NIDDM2 have been identified to date.
624 11307309 The responsible gene for NIDDM1 was recently identified to be Calpain 10, and SNP43 in this gene could explain all of the evidence for linkage in Mexican American type 2 diabetes.
625 11307309 This form of diabetes can result from mutations in at least seven different genes: hepatocyte nuclear factor(HNF)-4 alpha/MODY1, glucokinase/MODY2, HNF-1 alpha/MODY3, insulin promoter factor(IPF-1)/MODY4, HNF-1 beta/MODY5, NeuroD1/MODY6 and Islet(Isl)-1/MODY7.
626 11307309 Mutations in HNF-1 alpha/MODY3 are the most common cause of MODY in Japanese identified to date accounting for about 15% of cases of MODY.
627 11307309 Mutations in the HNF-4 alpha/MODY1, glucokinase/MODY2, HNF-1 beta/MODY5 and Isl-1/MODY7 genes have also been found in Japanese; however, they are rare causes of MODY.
628 11307309 Patients who have mutations in the HNF-1 beta/MODY5 gene have non-diabetic kidney dysfunction including renal cysts.
629 11307309 Genetic approach for type 2 diabetes had done by using non-parameteric linkage analysis such as sibpair analysis which worked well and NIDDM1 and NIDDM2 have been identified to date.
630 11307309 The responsible gene for NIDDM1 was recently identified to be Calpain 10, and SNP43 in this gene could explain all of the evidence for linkage in Mexican American type 2 diabetes.
631 11307309 This form of diabetes can result from mutations in at least seven different genes: hepatocyte nuclear factor(HNF)-4 alpha/MODY1, glucokinase/MODY2, HNF-1 alpha/MODY3, insulin promoter factor(IPF-1)/MODY4, HNF-1 beta/MODY5, NeuroD1/MODY6 and Islet(Isl)-1/MODY7.
632 11307309 Mutations in HNF-1 alpha/MODY3 are the most common cause of MODY in Japanese identified to date accounting for about 15% of cases of MODY.
633 11307309 Mutations in the HNF-4 alpha/MODY1, glucokinase/MODY2, HNF-1 beta/MODY5 and Isl-1/MODY7 genes have also been found in Japanese; however, they are rare causes of MODY.
634 11307309 Patients who have mutations in the HNF-1 beta/MODY5 gene have non-diabetic kidney dysfunction including renal cysts.
635 11307309 Genetic approach for type 2 diabetes had done by using non-parameteric linkage analysis such as sibpair analysis which worked well and NIDDM1 and NIDDM2 have been identified to date.
636 11307309 The responsible gene for NIDDM1 was recently identified to be Calpain 10, and SNP43 in this gene could explain all of the evidence for linkage in Mexican American type 2 diabetes.
637 11323086 Heterozygous mutations in the genes encoding transcription factors (HNF-1alpha, HNF-1beta and HNF-4alpha) in the hepatocyte nuclear factor (HNF) network are associated with maturity-onset diabetes of the young (MODY).
638 11323086 We screened HNF-6 gene for mutations in 34 Japanese subjects with MODY/early-onset diabetes mellitus and 56 subjects with late-onset diabetes mellitus.
639 11323086 Heterozygous mutations in the genes encoding transcription factors (HNF-1alpha, HNF-1beta and HNF-4alpha) in the hepatocyte nuclear factor (HNF) network are associated with maturity-onset diabetes of the young (MODY).
640 11323086 We screened HNF-6 gene for mutations in 34 Japanese subjects with MODY/early-onset diabetes mellitus and 56 subjects with late-onset diabetes mellitus.
641 11355750 Searching for a novel MODY gene in this population, we investigated a candidate for encoding the forkhead transcription factor HNF-3alpha, which also belongs to the HNF-transcription cascade.
642 11355750 However, their frequencies were not significantly different between MODY and control subjects, indicating that mutations in the HNF-3alpha gene are not a major cause of MODY in Japanese patients.
643 11355750 Searching for a novel MODY gene in this population, we investigated a candidate for encoding the forkhead transcription factor HNF-3alpha, which also belongs to the HNF-transcription cascade.
644 11355750 However, their frequencies were not significantly different between MODY and control subjects, indicating that mutations in the HNF-3alpha gene are not a major cause of MODY in Japanese patients.
645 11423471 Mutations in the HNF4alpha gene are responsible for type 1 maturity-onset diabetes of the young (MODY1), which is characterized by a defect in insulin secretion.
646 11423471 Recent evidence has implicated AMP-activated protein kinase (AMPK) in the modulation of both insulin secretion by pancreatic beta-cells and the control of glucose-dependent gene expression in both hepatocytes and beta-cells.
647 11423471 Therefore, the question could be raised as to whether AMPK plays a role in these processes by modulating HNF-4alpha function.
648 11423471 In this study, we show that activation of AMPK by 5-amino-4-imidazolecarboxamide riboside (AICAR) in hepatocytes greatly diminished HNF-4alpha protein levels and consequently downregulates the expression of HNF-4alpha target genes.
649 11423471 Quantitative evaluation of HNF-4alpha target gene expression revealed diminished mRNA levels for HNF-1alpha, GLUT2, L-type pyruvate kinase, aldolase B, apolipoprotein (apo)-B, and apoCIII.
650 11423471 Our data clearly demonstrate that the MODY1/HNF-4alpha transcription factor is a novel target of AMPK in hepatocytes.
651 11423471 Accordingly, it can be suggested that in pancreatic beta-cells, AMPK also acts by decreasing HNF-4alpha protein level, and therefore insulin secretion.
652 11423471 Mutations in the HNF4alpha gene are responsible for type 1 maturity-onset diabetes of the young (MODY1), which is characterized by a defect in insulin secretion.
653 11423471 Recent evidence has implicated AMP-activated protein kinase (AMPK) in the modulation of both insulin secretion by pancreatic beta-cells and the control of glucose-dependent gene expression in both hepatocytes and beta-cells.
654 11423471 Therefore, the question could be raised as to whether AMPK plays a role in these processes by modulating HNF-4alpha function.
655 11423471 In this study, we show that activation of AMPK by 5-amino-4-imidazolecarboxamide riboside (AICAR) in hepatocytes greatly diminished HNF-4alpha protein levels and consequently downregulates the expression of HNF-4alpha target genes.
656 11423471 Quantitative evaluation of HNF-4alpha target gene expression revealed diminished mRNA levels for HNF-1alpha, GLUT2, L-type pyruvate kinase, aldolase B, apolipoprotein (apo)-B, and apoCIII.
657 11423471 Our data clearly demonstrate that the MODY1/HNF-4alpha transcription factor is a novel target of AMPK in hepatocytes.
658 11423471 Accordingly, it can be suggested that in pancreatic beta-cells, AMPK also acts by decreasing HNF-4alpha protein level, and therefore insulin secretion.
659 11423471 Mutations in the HNF4alpha gene are responsible for type 1 maturity-onset diabetes of the young (MODY1), which is characterized by a defect in insulin secretion.
660 11423471 Recent evidence has implicated AMP-activated protein kinase (AMPK) in the modulation of both insulin secretion by pancreatic beta-cells and the control of glucose-dependent gene expression in both hepatocytes and beta-cells.
661 11423471 Therefore, the question could be raised as to whether AMPK plays a role in these processes by modulating HNF-4alpha function.
662 11423471 In this study, we show that activation of AMPK by 5-amino-4-imidazolecarboxamide riboside (AICAR) in hepatocytes greatly diminished HNF-4alpha protein levels and consequently downregulates the expression of HNF-4alpha target genes.
663 11423471 Quantitative evaluation of HNF-4alpha target gene expression revealed diminished mRNA levels for HNF-1alpha, GLUT2, L-type pyruvate kinase, aldolase B, apolipoprotein (apo)-B, and apoCIII.
664 11423471 Our data clearly demonstrate that the MODY1/HNF-4alpha transcription factor is a novel target of AMPK in hepatocytes.
665 11423471 Accordingly, it can be suggested that in pancreatic beta-cells, AMPK also acts by decreasing HNF-4alpha protein level, and therefore insulin secretion.
666 11423471 Mutations in the HNF4alpha gene are responsible for type 1 maturity-onset diabetes of the young (MODY1), which is characterized by a defect in insulin secretion.
667 11423471 Recent evidence has implicated AMP-activated protein kinase (AMPK) in the modulation of both insulin secretion by pancreatic beta-cells and the control of glucose-dependent gene expression in both hepatocytes and beta-cells.
668 11423471 Therefore, the question could be raised as to whether AMPK plays a role in these processes by modulating HNF-4alpha function.
669 11423471 In this study, we show that activation of AMPK by 5-amino-4-imidazolecarboxamide riboside (AICAR) in hepatocytes greatly diminished HNF-4alpha protein levels and consequently downregulates the expression of HNF-4alpha target genes.
670 11423471 Quantitative evaluation of HNF-4alpha target gene expression revealed diminished mRNA levels for HNF-1alpha, GLUT2, L-type pyruvate kinase, aldolase B, apolipoprotein (apo)-B, and apoCIII.
671 11423471 Our data clearly demonstrate that the MODY1/HNF-4alpha transcription factor is a novel target of AMPK in hepatocytes.
672 11423471 Accordingly, it can be suggested that in pancreatic beta-cells, AMPK also acts by decreasing HNF-4alpha protein level, and therefore insulin secretion.
673 11423471 Mutations in the HNF4alpha gene are responsible for type 1 maturity-onset diabetes of the young (MODY1), which is characterized by a defect in insulin secretion.
674 11423471 Recent evidence has implicated AMP-activated protein kinase (AMPK) in the modulation of both insulin secretion by pancreatic beta-cells and the control of glucose-dependent gene expression in both hepatocytes and beta-cells.
675 11423471 Therefore, the question could be raised as to whether AMPK plays a role in these processes by modulating HNF-4alpha function.
676 11423471 In this study, we show that activation of AMPK by 5-amino-4-imidazolecarboxamide riboside (AICAR) in hepatocytes greatly diminished HNF-4alpha protein levels and consequently downregulates the expression of HNF-4alpha target genes.
677 11423471 Quantitative evaluation of HNF-4alpha target gene expression revealed diminished mRNA levels for HNF-1alpha, GLUT2, L-type pyruvate kinase, aldolase B, apolipoprotein (apo)-B, and apoCIII.
678 11423471 Our data clearly demonstrate that the MODY1/HNF-4alpha transcription factor is a novel target of AMPK in hepatocytes.
679 11423471 Accordingly, it can be suggested that in pancreatic beta-cells, AMPK also acts by decreasing HNF-4alpha protein level, and therefore insulin secretion.
680 11423471 Mutations in the HNF4alpha gene are responsible for type 1 maturity-onset diabetes of the young (MODY1), which is characterized by a defect in insulin secretion.
681 11423471 Recent evidence has implicated AMP-activated protein kinase (AMPK) in the modulation of both insulin secretion by pancreatic beta-cells and the control of glucose-dependent gene expression in both hepatocytes and beta-cells.
682 11423471 Therefore, the question could be raised as to whether AMPK plays a role in these processes by modulating HNF-4alpha function.
683 11423471 In this study, we show that activation of AMPK by 5-amino-4-imidazolecarboxamide riboside (AICAR) in hepatocytes greatly diminished HNF-4alpha protein levels and consequently downregulates the expression of HNF-4alpha target genes.
684 11423471 Quantitative evaluation of HNF-4alpha target gene expression revealed diminished mRNA levels for HNF-1alpha, GLUT2, L-type pyruvate kinase, aldolase B, apolipoprotein (apo)-B, and apoCIII.
685 11423471 Our data clearly demonstrate that the MODY1/HNF-4alpha transcription factor is a novel target of AMPK in hepatocytes.
686 11423471 Accordingly, it can be suggested that in pancreatic beta-cells, AMPK also acts by decreasing HNF-4alpha protein level, and therefore insulin secretion.
687 11435618 We show here that loss of HNF4alpha function by both mutations is increased through impaired physical interaction and functional cooperation between HNF4alpha and p300.
688 11440371 Routine mutation screening of HNF-1alpha and GCK genes in MODY diagnosis: how effective are the techniques of DHPLC and direct sequencing used in combination?
689 11463573 Mutations in the human genes encoding the tissue-specific transcription factors hepatocyte nuclear factor (HNF)1alpha, HNF1beta and HNF4alpha are responsible for maturity onset diabetes of the young (MODY), a monogenic dominant inherited form of diabetes mellitus characterized by defective insulin secretion of the pancreatic beta-cells.
690 11485019 Furthermore, in the human beta cell GLUT1 mRNA is predominant when compared to GLUT2 and glucose influx appears to be largely mediated by this low-Km transporter.
691 11485019 Thus, we looked for the presence of sequence variants by polymerase chain reaction and single-strand conformation polymorphism (PCR-SSCP) within the GLUT1 gene in 90 Italian pedigrees negative at the search for mutations in glucokinase (MODY2) and hepatocyte nuclear factor-1alpha (MODY3), the two genes responsible for about 60% of MODY cases in Italian children.
692 11485019 In conclusion, it appears from these results that the glucose transporter gene GLUT1 is unlikely to play a major role in the etiology of MODY diabetes.
693 11485019 Furthermore, in the human beta cell GLUT1 mRNA is predominant when compared to GLUT2 and glucose influx appears to be largely mediated by this low-Km transporter.
694 11485019 Thus, we looked for the presence of sequence variants by polymerase chain reaction and single-strand conformation polymorphism (PCR-SSCP) within the GLUT1 gene in 90 Italian pedigrees negative at the search for mutations in glucokinase (MODY2) and hepatocyte nuclear factor-1alpha (MODY3), the two genes responsible for about 60% of MODY cases in Italian children.
695 11485019 In conclusion, it appears from these results that the glucose transporter gene GLUT1 is unlikely to play a major role in the etiology of MODY diabetes.
696 11554773 Diabetes is caused either by mutations in the glucokinase gene (glucokinase MODY) or by mutations in transcription factors (transcription factor MODY).
697 11554773 Transcription factor maturity-onset diabetes of the young, caused by mutations in the hepatocyte nuclear factor genes HNF-1alpha, HNF-4alpha and HNF-1beta, and in insulin promoter factor-1 results in a progressive beta-cell defect with increasing treatment requirements and diabetic complications.
698 11554773 Diabetes is caused either by mutations in the glucokinase gene (glucokinase MODY) or by mutations in transcription factors (transcription factor MODY).
699 11554773 Transcription factor maturity-onset diabetes of the young, caused by mutations in the hepatocyte nuclear factor genes HNF-1alpha, HNF-4alpha and HNF-1beta, and in insulin promoter factor-1 results in a progressive beta-cell defect with increasing treatment requirements and diabetic complications.
700 11557972 Here we show that the transcriptional coactivator PGC-1 is strongly induced in liver in fasting mice and in three mouse models of insulin action deficiency: streptozotocin-induced diabetes, ob/ob genotype and liver insulin-receptor knockout.
701 11557972 Adenoviral-mediated expression of PGC-1 in hepatocytes in culture or in vivo strongly activates an entire programme of key gluconeogenic enzymes, including phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase, leading to increased glucose output.
702 11557972 Full transcriptional activation of the PEPCK promoter requires coactivation of the glucocorticoid receptor and the liver-enriched transcription factor HNF-4alpha (hepatic nuclear factor-4alpha) by PGC-1.
703 11557972 These results implicate PGC-1 as a key modulator of hepatic gluconeogenesis and as a central target of the insulin-cAMP axis in liver.
704 11590126 Maturity-onset diabetes of the young (MODY) is a monogenic, autosomal dominant subtype of early-onset diabetes mellitus due to defective insulin secretion by the pancreatic beta-cell in humans.
705 11590126 HNF-4alpha (MODY1), HNF-1alpha (MODY3), IPF-1 (also known as PDX-1, MODY4) and HNF-1beta (MODY5).
706 11590126 Transfection assays with various deletions and mutants of the P2 promoter reveal functional binding sites for HNF-1alpha, HNF-1beta and IPF-1, the other transcription factors known to encode MODY genes.
707 11590126 We demonstrate the significance of this alternative promoter in a large MODY family where a mutated IPF-1 binding site in the P2 promoter of the HNF-4alpha gene co-segregates with diabetes (LOD score 3.25).
708 11590126 Maturity-onset diabetes of the young (MODY) is a monogenic, autosomal dominant subtype of early-onset diabetes mellitus due to defective insulin secretion by the pancreatic beta-cell in humans.
709 11590126 HNF-4alpha (MODY1), HNF-1alpha (MODY3), IPF-1 (also known as PDX-1, MODY4) and HNF-1beta (MODY5).
710 11590126 Transfection assays with various deletions and mutants of the P2 promoter reveal functional binding sites for HNF-1alpha, HNF-1beta and IPF-1, the other transcription factors known to encode MODY genes.
711 11590126 We demonstrate the significance of this alternative promoter in a large MODY family where a mutated IPF-1 binding site in the P2 promoter of the HNF-4alpha gene co-segregates with diabetes (LOD score 3.25).
712 11590126 Maturity-onset diabetes of the young (MODY) is a monogenic, autosomal dominant subtype of early-onset diabetes mellitus due to defective insulin secretion by the pancreatic beta-cell in humans.
713 11590126 HNF-4alpha (MODY1), HNF-1alpha (MODY3), IPF-1 (also known as PDX-1, MODY4) and HNF-1beta (MODY5).
714 11590126 Transfection assays with various deletions and mutants of the P2 promoter reveal functional binding sites for HNF-1alpha, HNF-1beta and IPF-1, the other transcription factors known to encode MODY genes.
715 11590126 We demonstrate the significance of this alternative promoter in a large MODY family where a mutated IPF-1 binding site in the P2 promoter of the HNF-4alpha gene co-segregates with diabetes (LOD score 3.25).
716 11590126 Maturity-onset diabetes of the young (MODY) is a monogenic, autosomal dominant subtype of early-onset diabetes mellitus due to defective insulin secretion by the pancreatic beta-cell in humans.
717 11590126 HNF-4alpha (MODY1), HNF-1alpha (MODY3), IPF-1 (also known as PDX-1, MODY4) and HNF-1beta (MODY5).
718 11590126 Transfection assays with various deletions and mutants of the P2 promoter reveal functional binding sites for HNF-1alpha, HNF-1beta and IPF-1, the other transcription factors known to encode MODY genes.
719 11590126 We demonstrate the significance of this alternative promoter in a large MODY family where a mutated IPF-1 binding site in the P2 promoter of the HNF-4alpha gene co-segregates with diabetes (LOD score 3.25).
720 11668623 Studies of the variability of the hepatocyte nuclear factor-1beta (HNF-1beta / TCF2) and the dimerization cofactor of HNF-1 (DcoH / PCBD) genes in relation to type 2 diabetes mellitus and beta-cell function.
721 11668623 To investigate whether mutations in HNF-1 are implicated in the pathogenesis of MODY or late-onset diabetes with and without nephropathy in Danish Caucasians we examined the HNF-1beta (TCF2) and the dimerization cofactor of HNF-1 (DCoH, PCBD) genes for mutations in 11 MODY probands, 28 type 2 diabetic patients with nephropathy, and 46 type 2 diabetic patients with an impaired beta-cell function by combined single-strand conformation polymorphism (SSCP) and heteroduplex analysis.
722 11668623 In conclusion, mutations in HNF-1beta and DCoH are not a major cause of MODY or late onset type 2 diabetes in Danish Caucasian subjects.
723 11668623 Studies of the variability of the hepatocyte nuclear factor-1beta (HNF-1beta / TCF2) and the dimerization cofactor of HNF-1 (DcoH / PCBD) genes in relation to type 2 diabetes mellitus and beta-cell function.
724 11668623 To investigate whether mutations in HNF-1 are implicated in the pathogenesis of MODY or late-onset diabetes with and without nephropathy in Danish Caucasians we examined the HNF-1beta (TCF2) and the dimerization cofactor of HNF-1 (DCoH, PCBD) genes for mutations in 11 MODY probands, 28 type 2 diabetic patients with nephropathy, and 46 type 2 diabetic patients with an impaired beta-cell function by combined single-strand conformation polymorphism (SSCP) and heteroduplex analysis.
725 11668623 In conclusion, mutations in HNF-1beta and DCoH are not a major cause of MODY or late onset type 2 diabetes in Danish Caucasian subjects.
726 11679424 We found decreased steady-state mRNA levels of genes encoding glucose transporter 2 (Glut2), neutral and basic amino acid transporter, liver pyruvate kinase (L-Pk), and insulin in Hnf-1alpha(-/-) mice.
727 11679424 In addition, we determined that the expression of several islet-enriched transcription factors, including Pdx-1, Hnf-4alpha, and Neuro-D1/Beta-2, was reduced in Hnf-1alpha(-/-) mice.
728 11679424 This expression profile was pancreatic islet-specific and distinct from hepatocytes, where we found normal expression of Glut2, L-Pk, and Hnf-4alpha in the liver of Hnf-1alpha(-/-) mice.
729 11679424 The expression of small heterodimer partner (Shp-1), an orphan receptor that can heterodimerize with Hnf-4alpha and inhibit its transcriptional activity, was also reduced in Hnf-1alpha(-/-) islets.
730 11679424 We characterized a 0.58-kb Shp-1 promoter and determined that the decreased expression of Shp-1 may be indirectly mediated by a downregulation of Hnf-4alpha.
731 11679424 We further showed that Shp-1 can repress its own transcriptional activation by inhibiting Hnf-4alpha function, thereby establishing a feedback autoregulatory loop.
732 11679424 We found decreased steady-state mRNA levels of genes encoding glucose transporter 2 (Glut2), neutral and basic amino acid transporter, liver pyruvate kinase (L-Pk), and insulin in Hnf-1alpha(-/-) mice.
733 11679424 In addition, we determined that the expression of several islet-enriched transcription factors, including Pdx-1, Hnf-4alpha, and Neuro-D1/Beta-2, was reduced in Hnf-1alpha(-/-) mice.
734 11679424 This expression profile was pancreatic islet-specific and distinct from hepatocytes, where we found normal expression of Glut2, L-Pk, and Hnf-4alpha in the liver of Hnf-1alpha(-/-) mice.
735 11679424 The expression of small heterodimer partner (Shp-1), an orphan receptor that can heterodimerize with Hnf-4alpha and inhibit its transcriptional activity, was also reduced in Hnf-1alpha(-/-) islets.
736 11679424 We characterized a 0.58-kb Shp-1 promoter and determined that the decreased expression of Shp-1 may be indirectly mediated by a downregulation of Hnf-4alpha.
737 11679424 We further showed that Shp-1 can repress its own transcriptional activation by inhibiting Hnf-4alpha function, thereby establishing a feedback autoregulatory loop.
738 11679424 We found decreased steady-state mRNA levels of genes encoding glucose transporter 2 (Glut2), neutral and basic amino acid transporter, liver pyruvate kinase (L-Pk), and insulin in Hnf-1alpha(-/-) mice.
739 11679424 In addition, we determined that the expression of several islet-enriched transcription factors, including Pdx-1, Hnf-4alpha, and Neuro-D1/Beta-2, was reduced in Hnf-1alpha(-/-) mice.
740 11679424 This expression profile was pancreatic islet-specific and distinct from hepatocytes, where we found normal expression of Glut2, L-Pk, and Hnf-4alpha in the liver of Hnf-1alpha(-/-) mice.
741 11679424 The expression of small heterodimer partner (Shp-1), an orphan receptor that can heterodimerize with Hnf-4alpha and inhibit its transcriptional activity, was also reduced in Hnf-1alpha(-/-) islets.
742 11679424 We characterized a 0.58-kb Shp-1 promoter and determined that the decreased expression of Shp-1 may be indirectly mediated by a downregulation of Hnf-4alpha.
743 11679424 We further showed that Shp-1 can repress its own transcriptional activation by inhibiting Hnf-4alpha function, thereby establishing a feedback autoregulatory loop.
744 11679424 We found decreased steady-state mRNA levels of genes encoding glucose transporter 2 (Glut2), neutral and basic amino acid transporter, liver pyruvate kinase (L-Pk), and insulin in Hnf-1alpha(-/-) mice.
745 11679424 In addition, we determined that the expression of several islet-enriched transcription factors, including Pdx-1, Hnf-4alpha, and Neuro-D1/Beta-2, was reduced in Hnf-1alpha(-/-) mice.
746 11679424 This expression profile was pancreatic islet-specific and distinct from hepatocytes, where we found normal expression of Glut2, L-Pk, and Hnf-4alpha in the liver of Hnf-1alpha(-/-) mice.
747 11679424 The expression of small heterodimer partner (Shp-1), an orphan receptor that can heterodimerize with Hnf-4alpha and inhibit its transcriptional activity, was also reduced in Hnf-1alpha(-/-) islets.
748 11679424 We characterized a 0.58-kb Shp-1 promoter and determined that the decreased expression of Shp-1 may be indirectly mediated by a downregulation of Hnf-4alpha.
749 11679424 We further showed that Shp-1 can repress its own transcriptional activation by inhibiting Hnf-4alpha function, thereby establishing a feedback autoregulatory loop.
750 11679424 We found decreased steady-state mRNA levels of genes encoding glucose transporter 2 (Glut2), neutral and basic amino acid transporter, liver pyruvate kinase (L-Pk), and insulin in Hnf-1alpha(-/-) mice.
751 11679424 In addition, we determined that the expression of several islet-enriched transcription factors, including Pdx-1, Hnf-4alpha, and Neuro-D1/Beta-2, was reduced in Hnf-1alpha(-/-) mice.
752 11679424 This expression profile was pancreatic islet-specific and distinct from hepatocytes, where we found normal expression of Glut2, L-Pk, and Hnf-4alpha in the liver of Hnf-1alpha(-/-) mice.
753 11679424 The expression of small heterodimer partner (Shp-1), an orphan receptor that can heterodimerize with Hnf-4alpha and inhibit its transcriptional activity, was also reduced in Hnf-1alpha(-/-) islets.
754 11679424 We characterized a 0.58-kb Shp-1 promoter and determined that the decreased expression of Shp-1 may be indirectly mediated by a downregulation of Hnf-4alpha.
755 11679424 We further showed that Shp-1 can repress its own transcriptional activation by inhibiting Hnf-4alpha function, thereby establishing a feedback autoregulatory loop.
756 11716293 Mutations in the hepatocyte nuclear factor-1beta (HNF-1beta) gene have been shown to be a cause of maturity-onset diabetes of the young (MODY).
757 11717395 Mutations in the human genes encoding hepatocyte nuclear factors (HNF) 1alpha, 1beta, 4alpha, and IPF1(PDX1/IDX1/STF1) result in pancreatic beta cell dysfunction and diabetes mellitus.
758 11717395 Hnf1alpha also exerts direct control of pancreatic-specific expression of hnf4gamma and hnf3gamma.
759 11717395 Hnf1alpha dependence of hnf4alpha, hnf4gamma, hnf3gamma, and two previously characterized distal targets (glut2 and pklr) is established only after differentiated cells arise during pancreatic embryonic development.
760 11806470 The aim of our study was to determine the contribution of the HNF-1alpha gene to the development of MODY in a Polish population.
761 11806470 In conclusion, we have identified a new HNF-1alpha variant that represents the first MODY mutation described in a Polish population.
762 11806470 MODY3 mutations, including those in the exon 4 "hot spot", do not appear to be a very common cause of MODY in the Polish population.
763 11806470 The aim of our study was to determine the contribution of the HNF-1alpha gene to the development of MODY in a Polish population.
764 11806470 In conclusion, we have identified a new HNF-1alpha variant that represents the first MODY mutation described in a Polish population.
765 11806470 MODY3 mutations, including those in the exon 4 "hot spot", do not appear to be a very common cause of MODY in the Polish population.
766 11806470 The aim of our study was to determine the contribution of the HNF-1alpha gene to the development of MODY in a Polish population.
767 11806470 In conclusion, we have identified a new HNF-1alpha variant that represents the first MODY mutation described in a Polish population.
768 11806470 MODY3 mutations, including those in the exon 4 "hot spot", do not appear to be a very common cause of MODY in the Polish population.
769 11827432 To determine the prevalence of MODY and early-onset type 2 diabetes with the mutation of HNF-1alpha gene in Korea, we analyzed this gene in 69 Korean early-onset type 2 diabetics and in 35 healthy persons using the single-strand conformation polymorphism (SSCP) technique and direct sequencing.
770 11827432 We concluded that this genetic mutation in HNF-1alpha gene may not be a common contributor to MODY and early-onset type 2 diabetes susceptibility in Korea.
771 11827432 To determine the prevalence of MODY and early-onset type 2 diabetes with the mutation of HNF-1alpha gene in Korea, we analyzed this gene in 69 Korean early-onset type 2 diabetics and in 35 healthy persons using the single-strand conformation polymorphism (SSCP) technique and direct sequencing.
772 11827432 We concluded that this genetic mutation in HNF-1alpha gene may not be a common contributor to MODY and early-onset type 2 diabetes susceptibility in Korea.
773 11890664 Nuclear translocation of SHP and visualization of interaction with HNF-4alpha in living cells.
774 11890664 Mutations in small heterodimer partner (SHP) and hepatocyte nuclear factor 4alpha (HNF4alpha) are associated with mild obesity and diabetes mellitus, respectively.
775 11890664 Expressed SHP resided only in the cytoplasm in COS-7 cells which lacks HNF4alpha, but predominantly in the nucleus in insulinoma cells (MIN6).
776 11890664 We found fluorescence resonance energy transfer between GFP-tagged SHP and HNF4alpha, indicating a specific close association between them in the nucleus.
777 11890664 The results strongly suggest that SHP exists primarily in the cytoplasm and is translocated into the nucleus on interacting with its nuclear receptor partner HNF4alpha.
778 11890664 Nuclear translocation of SHP and visualization of interaction with HNF-4alpha in living cells.
779 11890664 Mutations in small heterodimer partner (SHP) and hepatocyte nuclear factor 4alpha (HNF4alpha) are associated with mild obesity and diabetes mellitus, respectively.
780 11890664 Expressed SHP resided only in the cytoplasm in COS-7 cells which lacks HNF4alpha, but predominantly in the nucleus in insulinoma cells (MIN6).
781 11890664 We found fluorescence resonance energy transfer between GFP-tagged SHP and HNF4alpha, indicating a specific close association between them in the nucleus.
782 11890664 The results strongly suggest that SHP exists primarily in the cytoplasm and is translocated into the nucleus on interacting with its nuclear receptor partner HNF4alpha.
783 11890664 Nuclear translocation of SHP and visualization of interaction with HNF-4alpha in living cells.
784 11890664 Mutations in small heterodimer partner (SHP) and hepatocyte nuclear factor 4alpha (HNF4alpha) are associated with mild obesity and diabetes mellitus, respectively.
785 11890664 Expressed SHP resided only in the cytoplasm in COS-7 cells which lacks HNF4alpha, but predominantly in the nucleus in insulinoma cells (MIN6).
786 11890664 We found fluorescence resonance energy transfer between GFP-tagged SHP and HNF4alpha, indicating a specific close association between them in the nucleus.
787 11890664 The results strongly suggest that SHP exists primarily in the cytoplasm and is translocated into the nucleus on interacting with its nuclear receptor partner HNF4alpha.
788 11890664 Nuclear translocation of SHP and visualization of interaction with HNF-4alpha in living cells.
789 11890664 Mutations in small heterodimer partner (SHP) and hepatocyte nuclear factor 4alpha (HNF4alpha) are associated with mild obesity and diabetes mellitus, respectively.
790 11890664 Expressed SHP resided only in the cytoplasm in COS-7 cells which lacks HNF4alpha, but predominantly in the nucleus in insulinoma cells (MIN6).
791 11890664 We found fluorescence resonance energy transfer between GFP-tagged SHP and HNF4alpha, indicating a specific close association between them in the nucleus.
792 11890664 The results strongly suggest that SHP exists primarily in the cytoplasm and is translocated into the nucleus on interacting with its nuclear receptor partner HNF4alpha.
793 11890664 Nuclear translocation of SHP and visualization of interaction with HNF-4alpha in living cells.
794 11890664 Mutations in small heterodimer partner (SHP) and hepatocyte nuclear factor 4alpha (HNF4alpha) are associated with mild obesity and diabetes mellitus, respectively.
795 11890664 Expressed SHP resided only in the cytoplasm in COS-7 cells which lacks HNF4alpha, but predominantly in the nucleus in insulinoma cells (MIN6).
796 11890664 We found fluorescence resonance energy transfer between GFP-tagged SHP and HNF4alpha, indicating a specific close association between them in the nucleus.
797 11890664 The results strongly suggest that SHP exists primarily in the cytoplasm and is translocated into the nucleus on interacting with its nuclear receptor partner HNF4alpha.
798 11904435 Profound defects in pancreatic beta-cell function in mice with combined heterozygous mutations in Pdx-1, Hnf-1alpha, and Hnf-3beta.
799 11904435 In mice, a heterozygous mutation in Pdx-1 alone, but not Hnf-1alpha(+/-), Hnf-3beta(+/-), or Hnf-4alpha(+/-), causes impaired glucose-stimulated insulin secretion in mice.
800 11904435 To investigate the possible functional relationships between these transcription factors on beta-cell activity in vivo, we generated mice with the following combined heterozygous mutations: Pdx-1(+/-)/Hnf-1alpha(+/-), Pdx-1(+/-)/Hnf-3beta(+/-), Pdx-1(+/-)/Hnf-4alpha(+/-), Hnf-1alpha(+/-)/Hnf-4alpha(+/-), and Hnf-3beta(+/-)/Hnf-4alpha(+/-).
801 11904435 The greatest loss in function was in combined heterozygous null alleles of Pdx-1 and Hnf-1alpha (Pdx-1(+/-)/Hnf-1alpha(+/-)), or Pdx-1 and Hnf-3beta (Pdx-1(+/-)/Hnf-3beta(+/-)).
802 11904435 Both double mutants develop progressively impaired glucose tolerance and acquire a compromised first- and second-phase insulin secretion profile in response to glucose compared with Pdx-1(+/-) mice alone.
803 11904435 The loss in beta-cell function in Pdx-1(+/-)/Hnf-3beta(+/-) mice was associated with decreased expression of Nkx-6.1, glucokinase (Gck), aldolase B (aldo-B), and insulin, whereas Nkx2.2, Nkx-6.1, Glut-2, Gck, aldo-B, the liver isoform of pyruvate kinase, and insulin expression was reduced in Pdx-1(+/-)/Hnf-1alpha(+/-) mice.
804 11904435 The islet cell architecture was also abnormal in Pdx-1(+/-)/Hnf-3beta(+/-) and Pdx-1(+/-)/Hnf-1alpha(+/-) mice, with glucagon-expressing cells scattered throughout the islet, a defect that may be connected to decreased E-cadherin expression.
805 11904435 Profound defects in pancreatic beta-cell function in mice with combined heterozygous mutations in Pdx-1, Hnf-1alpha, and Hnf-3beta.
806 11904435 In mice, a heterozygous mutation in Pdx-1 alone, but not Hnf-1alpha(+/-), Hnf-3beta(+/-), or Hnf-4alpha(+/-), causes impaired glucose-stimulated insulin secretion in mice.
807 11904435 To investigate the possible functional relationships between these transcription factors on beta-cell activity in vivo, we generated mice with the following combined heterozygous mutations: Pdx-1(+/-)/Hnf-1alpha(+/-), Pdx-1(+/-)/Hnf-3beta(+/-), Pdx-1(+/-)/Hnf-4alpha(+/-), Hnf-1alpha(+/-)/Hnf-4alpha(+/-), and Hnf-3beta(+/-)/Hnf-4alpha(+/-).
808 11904435 The greatest loss in function was in combined heterozygous null alleles of Pdx-1 and Hnf-1alpha (Pdx-1(+/-)/Hnf-1alpha(+/-)), or Pdx-1 and Hnf-3beta (Pdx-1(+/-)/Hnf-3beta(+/-)).
809 11904435 Both double mutants develop progressively impaired glucose tolerance and acquire a compromised first- and second-phase insulin secretion profile in response to glucose compared with Pdx-1(+/-) mice alone.
810 11904435 The loss in beta-cell function in Pdx-1(+/-)/Hnf-3beta(+/-) mice was associated with decreased expression of Nkx-6.1, glucokinase (Gck), aldolase B (aldo-B), and insulin, whereas Nkx2.2, Nkx-6.1, Glut-2, Gck, aldo-B, the liver isoform of pyruvate kinase, and insulin expression was reduced in Pdx-1(+/-)/Hnf-1alpha(+/-) mice.
811 11904435 The islet cell architecture was also abnormal in Pdx-1(+/-)/Hnf-3beta(+/-) and Pdx-1(+/-)/Hnf-1alpha(+/-) mice, with glucagon-expressing cells scattered throughout the islet, a defect that may be connected to decreased E-cadherin expression.
812 11916906 Mutations of the hepatocyte nuclear factor-4alpha (HNF-4alpha) gene are associated with a subtype of maturity-onset diabetes of the young (MODY1) that is characterized by impaired insulin secretion in response to a glucose load.
813 11916906 In the present study, we showed, using a yeast two-hybrid screening assay, that thyroid hormone receptor interacting protein 3 (Trip3) interacted with HNF-4alpha, and their interaction was confirmed by the glutathione S-transferase pull-down assay.
814 11916906 Cotransfection experiments indicated that Trip3 could enhance (two- to threefold) the transcription activity of HNF-4alpha in COS-7 cells and MIN6 cells.
815 11916906 These results suggest that Trip3 is a coactivator of HNF-4alpha.
816 11916906 Mutation screening revealed that variation of the Trip3 gene is not a common cause of MODY/early-onset type 2 diabetes in Japanese individuals.
817 11916906 Trip3 may play an important role in glucose metabolism by regulating the transcription activity of HNF-4alpha.
818 11916906 Mutations of the hepatocyte nuclear factor-4alpha (HNF-4alpha) gene are associated with a subtype of maturity-onset diabetes of the young (MODY1) that is characterized by impaired insulin secretion in response to a glucose load.
819 11916906 In the present study, we showed, using a yeast two-hybrid screening assay, that thyroid hormone receptor interacting protein 3 (Trip3) interacted with HNF-4alpha, and their interaction was confirmed by the glutathione S-transferase pull-down assay.
820 11916906 Cotransfection experiments indicated that Trip3 could enhance (two- to threefold) the transcription activity of HNF-4alpha in COS-7 cells and MIN6 cells.
821 11916906 These results suggest that Trip3 is a coactivator of HNF-4alpha.
822 11916906 Mutation screening revealed that variation of the Trip3 gene is not a common cause of MODY/early-onset type 2 diabetes in Japanese individuals.
823 11916906 Trip3 may play an important role in glucose metabolism by regulating the transcription activity of HNF-4alpha.
824 11916906 Mutations of the hepatocyte nuclear factor-4alpha (HNF-4alpha) gene are associated with a subtype of maturity-onset diabetes of the young (MODY1) that is characterized by impaired insulin secretion in response to a glucose load.
825 11916906 In the present study, we showed, using a yeast two-hybrid screening assay, that thyroid hormone receptor interacting protein 3 (Trip3) interacted with HNF-4alpha, and their interaction was confirmed by the glutathione S-transferase pull-down assay.
826 11916906 Cotransfection experiments indicated that Trip3 could enhance (two- to threefold) the transcription activity of HNF-4alpha in COS-7 cells and MIN6 cells.
827 11916906 These results suggest that Trip3 is a coactivator of HNF-4alpha.
828 11916906 Mutation screening revealed that variation of the Trip3 gene is not a common cause of MODY/early-onset type 2 diabetes in Japanese individuals.
829 11916906 Trip3 may play an important role in glucose metabolism by regulating the transcription activity of HNF-4alpha.
830 11916906 Mutations of the hepatocyte nuclear factor-4alpha (HNF-4alpha) gene are associated with a subtype of maturity-onset diabetes of the young (MODY1) that is characterized by impaired insulin secretion in response to a glucose load.
831 11916906 In the present study, we showed, using a yeast two-hybrid screening assay, that thyroid hormone receptor interacting protein 3 (Trip3) interacted with HNF-4alpha, and their interaction was confirmed by the glutathione S-transferase pull-down assay.
832 11916906 Cotransfection experiments indicated that Trip3 could enhance (two- to threefold) the transcription activity of HNF-4alpha in COS-7 cells and MIN6 cells.
833 11916906 These results suggest that Trip3 is a coactivator of HNF-4alpha.
834 11916906 Mutation screening revealed that variation of the Trip3 gene is not a common cause of MODY/early-onset type 2 diabetes in Japanese individuals.
835 11916906 Trip3 may play an important role in glucose metabolism by regulating the transcription activity of HNF-4alpha.
836 11916906 Mutations of the hepatocyte nuclear factor-4alpha (HNF-4alpha) gene are associated with a subtype of maturity-onset diabetes of the young (MODY1) that is characterized by impaired insulin secretion in response to a glucose load.
837 11916906 In the present study, we showed, using a yeast two-hybrid screening assay, that thyroid hormone receptor interacting protein 3 (Trip3) interacted with HNF-4alpha, and their interaction was confirmed by the glutathione S-transferase pull-down assay.
838 11916906 Cotransfection experiments indicated that Trip3 could enhance (two- to threefold) the transcription activity of HNF-4alpha in COS-7 cells and MIN6 cells.
839 11916906 These results suggest that Trip3 is a coactivator of HNF-4alpha.
840 11916906 Mutation screening revealed that variation of the Trip3 gene is not a common cause of MODY/early-onset type 2 diabetes in Japanese individuals.
841 11916906 Trip3 may play an important role in glucose metabolism by regulating the transcription activity of HNF-4alpha.
842 11916906 Mutations of the hepatocyte nuclear factor-4alpha (HNF-4alpha) gene are associated with a subtype of maturity-onset diabetes of the young (MODY1) that is characterized by impaired insulin secretion in response to a glucose load.
843 11916906 In the present study, we showed, using a yeast two-hybrid screening assay, that thyroid hormone receptor interacting protein 3 (Trip3) interacted with HNF-4alpha, and their interaction was confirmed by the glutathione S-transferase pull-down assay.
844 11916906 Cotransfection experiments indicated that Trip3 could enhance (two- to threefold) the transcription activity of HNF-4alpha in COS-7 cells and MIN6 cells.
845 11916906 These results suggest that Trip3 is a coactivator of HNF-4alpha.
846 11916906 Mutation screening revealed that variation of the Trip3 gene is not a common cause of MODY/early-onset type 2 diabetes in Japanese individuals.
847 11916906 Trip3 may play an important role in glucose metabolism by regulating the transcription activity of HNF-4alpha.
848 11924926 In humans, mutations in leptin, leptin receptor, proopiomelanocortin (POMC), melanocortin-4 receptor (MC4R) and prohormone convertase 1 (PC1) have been described in patients with severe obesity.
849 11924926 Most of these obesity disorders, with the exception of the MC4R mutations, exhibit recessive inheritance and a distinct phenotype with varying degrees of hypothalamic dysfunction, and they unravel the critical role of the central leptin and melanocortin pathways in human appetite control and energy homeostasis.
850 11924926 To date, six MODY genes have been identified, the glucokinase gene and five beta cell-specific transcription factor genes, hepatocyte nuclear factor-1alpha (HNF-1alpha), HNF-1beta, HNF-4alpha, insulin promoter factor-1 (IPF-1) and NeuroD1/BETA2.
851 11924926 At the other end of the spectrum are the inherited syndromes of insulin resistance that are caused by mutations in the insulin receptor gene and in the adipocyte-specific transcription factor PPARgamma.
852 11978637 Hepatocyte nuclear factor-1alpha recruits the transcriptional co-activator p300 on the GLUT2 gene promoter.
853 11978637 Mutations in the hepatocyte nuclear factor (HNF)-1alpha gene have been linked to subtype 3 of maturity-onset diabetes of the young (MODY), a disease characterized by a primary defect in insulin secretion.
854 11978637 Here we show that the human GLUT2 gene is closely regulated by HNF-1alpha via sequences downstream of the transcriptional start site by interaction with transcriptional co-activator p300.
855 11978637 These findings demonstrated that HNF-1alpha binds to the 5'-untranslated region of GLUT2 and that p300 acts as a transcriptional co-activator for HNF-1alpha.
856 11978663 After exclusion of three families with MODY1, MODY3, and mitochondrial mutations, the highest NPL scores were observed on chromosomes 1p (D1S438; NPL 2.6; P < 0.01), 3p (D3S1620; NPL 2.2; P < 0.03), 5q (D5S1465; NPL 2.1; P < 0.03), 7q (D7S820; NPL 2.0; P < 0.03), 18q (D18S535; NPL 1.9; P < 0.04), 20q (D20S195; NPL 2.5; P < 0.02), and 21q (D21S1446; NPL 2.2; P < 0.03).
857 11978663 We conclude that considerable heterogeneity exists in Scandinavian subjects with EOD; 24% had MODY or maternally inherited diabetes and deafness, and approximately 60% were GAD antibody positive or had type 1 diabetes-associated HLA genotypes.
858 11978663 After exclusion of three families with MODY1, MODY3, and mitochondrial mutations, the highest NPL scores were observed on chromosomes 1p (D1S438; NPL 2.6; P < 0.01), 3p (D3S1620; NPL 2.2; P < 0.03), 5q (D5S1465; NPL 2.1; P < 0.03), 7q (D7S820; NPL 2.0; P < 0.03), 18q (D18S535; NPL 1.9; P < 0.04), 20q (D20S195; NPL 2.5; P < 0.02), and 21q (D21S1446; NPL 2.2; P < 0.03).
859 11978663 We conclude that considerable heterogeneity exists in Scandinavian subjects with EOD; 24% had MODY or maternally inherited diabetes and deafness, and approximately 60% were GAD antibody positive or had type 1 diabetes-associated HLA genotypes.
860 11979019 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of familial diabetes mellitus characterized by early onset, autosomal dominant inheritance and primary defects of insulin secretion.
861 11979019 These genes encode the enzyme glucokinase and the transcription factors hepatocyte nuclear factor 4alpha, hepatocyte nuclear factor 1alpha, insulin promoter factor-1, hepatocyte nuclear factor 1beta and neuroD1.
862 11984998 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of type 2 diabetes characterised by an early onset, an autosomal dominant inheritance, and a primary defect in insulin secretion.
863 11984998 So far, six MODY genes have been identified (MODY1-6): hepatocyte nuclear factor (HNF-4 alpha), glucokinase, HNF-1 alpha, HNF-1 beta, insulin promoter factor 1(IPF-1), and neurogenic differentiation factor 1 (NEUROD1).
864 11984998 MODY2 and MODY3 are the most common forms of MODY.
865 11984998 In contrast, MODY3 and some of the other MODY forms are characterised by major insulin secretory defects and severe hyperglycaemia associated with microvascular complications.
866 11984998 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of type 2 diabetes characterised by an early onset, an autosomal dominant inheritance, and a primary defect in insulin secretion.
867 11984998 So far, six MODY genes have been identified (MODY1-6): hepatocyte nuclear factor (HNF-4 alpha), glucokinase, HNF-1 alpha, HNF-1 beta, insulin promoter factor 1(IPF-1), and neurogenic differentiation factor 1 (NEUROD1).
868 11984998 MODY2 and MODY3 are the most common forms of MODY.
869 11984998 In contrast, MODY3 and some of the other MODY forms are characterised by major insulin secretory defects and severe hyperglycaemia associated with microvascular complications.
870 11984998 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of type 2 diabetes characterised by an early onset, an autosomal dominant inheritance, and a primary defect in insulin secretion.
871 11984998 So far, six MODY genes have been identified (MODY1-6): hepatocyte nuclear factor (HNF-4 alpha), glucokinase, HNF-1 alpha, HNF-1 beta, insulin promoter factor 1(IPF-1), and neurogenic differentiation factor 1 (NEUROD1).
872 11984998 MODY2 and MODY3 are the most common forms of MODY.
873 11984998 In contrast, MODY3 and some of the other MODY forms are characterised by major insulin secretory defects and severe hyperglycaemia associated with microvascular complications.
874 11984998 Maturity-onset diabetes of the young (MODY) is a genetically and clinically heterogeneous subtype of type 2 diabetes characterised by an early onset, an autosomal dominant inheritance, and a primary defect in insulin secretion.
875 11984998 So far, six MODY genes have been identified (MODY1-6): hepatocyte nuclear factor (HNF-4 alpha), glucokinase, HNF-1 alpha, HNF-1 beta, insulin promoter factor 1(IPF-1), and neurogenic differentiation factor 1 (NEUROD1).
876 11984998 MODY2 and MODY3 are the most common forms of MODY.
877 11984998 In contrast, MODY3 and some of the other MODY forms are characterised by major insulin secretory defects and severe hyperglycaemia associated with microvascular complications.
878 11994285 Activation of the insulin gene promoter through a direct effect of hepatocyte nuclear factor 4 alpha.
879 11994285 Maturity onset diabetes of the young, subtype 1 (MODY1), is associated with defective glucose-dependent insulin secretion from pancreatic beta cells.
880 11994285 To understand better the MODY1 phenotype, we tested whether HNF4 alpha was able to modulate directly the insulin gene promoter.
881 11994285 Transfection of cultured 293T cells with an HNF4 alpha expression vector led to 10-fold activation of a cotransfected reporter plasmid containing the rat insulin I gene promoter.
882 11994285 In transfected INS-1 beta cells, mutation of either the HNF1 alpha site or the HNF4 alpha site in the insulin gene promoter led to 50-75% reduction in reporter gene activity; expression of dominant negative HNF4 alpha led to significant reduction in the activity of wild type and both mutated promoters.
883 11994285 Thus, in addition to the previously described indirect action of HNF4 alpha on insulin gene expression mediated through elevated HNF1 alpha levels, HNF4 alpha also activates the insulin gene directly, through a previously unrecognized cis element.
884 11994285 Activation of the insulin gene promoter through a direct effect of hepatocyte nuclear factor 4 alpha.
885 11994285 Maturity onset diabetes of the young, subtype 1 (MODY1), is associated with defective glucose-dependent insulin secretion from pancreatic beta cells.
886 11994285 To understand better the MODY1 phenotype, we tested whether HNF4 alpha was able to modulate directly the insulin gene promoter.
887 11994285 Transfection of cultured 293T cells with an HNF4 alpha expression vector led to 10-fold activation of a cotransfected reporter plasmid containing the rat insulin I gene promoter.
888 11994285 In transfected INS-1 beta cells, mutation of either the HNF1 alpha site or the HNF4 alpha site in the insulin gene promoter led to 50-75% reduction in reporter gene activity; expression of dominant negative HNF4 alpha led to significant reduction in the activity of wild type and both mutated promoters.
889 11994285 Thus, in addition to the previously described indirect action of HNF4 alpha on insulin gene expression mediated through elevated HNF1 alpha levels, HNF4 alpha also activates the insulin gene directly, through a previously unrecognized cis element.
890 11994285 Activation of the insulin gene promoter through a direct effect of hepatocyte nuclear factor 4 alpha.
891 11994285 Maturity onset diabetes of the young, subtype 1 (MODY1), is associated with defective glucose-dependent insulin secretion from pancreatic beta cells.
892 11994285 To understand better the MODY1 phenotype, we tested whether HNF4 alpha was able to modulate directly the insulin gene promoter.
893 11994285 Transfection of cultured 293T cells with an HNF4 alpha expression vector led to 10-fold activation of a cotransfected reporter plasmid containing the rat insulin I gene promoter.
894 11994285 In transfected INS-1 beta cells, mutation of either the HNF1 alpha site or the HNF4 alpha site in the insulin gene promoter led to 50-75% reduction in reporter gene activity; expression of dominant negative HNF4 alpha led to significant reduction in the activity of wild type and both mutated promoters.
895 11994285 Thus, in addition to the previously described indirect action of HNF4 alpha on insulin gene expression mediated through elevated HNF1 alpha levels, HNF4 alpha also activates the insulin gene directly, through a previously unrecognized cis element.
896 11994285 Activation of the insulin gene promoter through a direct effect of hepatocyte nuclear factor 4 alpha.
897 11994285 Maturity onset diabetes of the young, subtype 1 (MODY1), is associated with defective glucose-dependent insulin secretion from pancreatic beta cells.
898 11994285 To understand better the MODY1 phenotype, we tested whether HNF4 alpha was able to modulate directly the insulin gene promoter.
899 11994285 Transfection of cultured 293T cells with an HNF4 alpha expression vector led to 10-fold activation of a cotransfected reporter plasmid containing the rat insulin I gene promoter.
900 11994285 In transfected INS-1 beta cells, mutation of either the HNF1 alpha site or the HNF4 alpha site in the insulin gene promoter led to 50-75% reduction in reporter gene activity; expression of dominant negative HNF4 alpha led to significant reduction in the activity of wild type and both mutated promoters.
901 11994285 Thus, in addition to the previously described indirect action of HNF4 alpha on insulin gene expression mediated through elevated HNF1 alpha levels, HNF4 alpha also activates the insulin gene directly, through a previously unrecognized cis element.
902 11994285 Activation of the insulin gene promoter through a direct effect of hepatocyte nuclear factor 4 alpha.
903 11994285 Maturity onset diabetes of the young, subtype 1 (MODY1), is associated with defective glucose-dependent insulin secretion from pancreatic beta cells.
904 11994285 To understand better the MODY1 phenotype, we tested whether HNF4 alpha was able to modulate directly the insulin gene promoter.
905 11994285 Transfection of cultured 293T cells with an HNF4 alpha expression vector led to 10-fold activation of a cotransfected reporter plasmid containing the rat insulin I gene promoter.
906 11994285 In transfected INS-1 beta cells, mutation of either the HNF1 alpha site or the HNF4 alpha site in the insulin gene promoter led to 50-75% reduction in reporter gene activity; expression of dominant negative HNF4 alpha led to significant reduction in the activity of wild type and both mutated promoters.
907 11994285 Thus, in addition to the previously described indirect action of HNF4 alpha on insulin gene expression mediated through elevated HNF1 alpha levels, HNF4 alpha also activates the insulin gene directly, through a previously unrecognized cis element.
908 11994285 Activation of the insulin gene promoter through a direct effect of hepatocyte nuclear factor 4 alpha.
909 11994285 Maturity onset diabetes of the young, subtype 1 (MODY1), is associated with defective glucose-dependent insulin secretion from pancreatic beta cells.
910 11994285 To understand better the MODY1 phenotype, we tested whether HNF4 alpha was able to modulate directly the insulin gene promoter.
911 11994285 Transfection of cultured 293T cells with an HNF4 alpha expression vector led to 10-fold activation of a cotransfected reporter plasmid containing the rat insulin I gene promoter.
912 11994285 In transfected INS-1 beta cells, mutation of either the HNF1 alpha site or the HNF4 alpha site in the insulin gene promoter led to 50-75% reduction in reporter gene activity; expression of dominant negative HNF4 alpha led to significant reduction in the activity of wild type and both mutated promoters.
913 11994285 Thus, in addition to the previously described indirect action of HNF4 alpha on insulin gene expression mediated through elevated HNF1 alpha levels, HNF4 alpha also activates the insulin gene directly, through a previously unrecognized cis element.
914 11994408 Pdx1 restores beta cell function in Irs2 knockout mice.
915 11994408 Mutations in Pdx1 or upstream hepatocyte nuclear factors cause autosomal forms of early-onset diabetes (maturity-onset diabetes of the young [MODY]).
916 11994408 In mice, the Irs2 branch of the insulin/Igf signaling system mediates peripheral insulin action and pancreatic beta cell growth and function.
917 11994408 To investigate whether beta cell failure in Irs2(-/-) mice might be related to dysfunction of MODY-related transcription factors, we measured the expression of Pdx1 in islets from young Irs2(-/-) mice.
918 11994408 Before the onset of diabetes, Pdx1 was reduced in islets from Irs2(-/-) mice, whereas it was expressed normally in islets from wild-type or Irs1(-/-) mice, which do not develop diabetes.
919 11994408 Whereas male Irs2(-/-)Pdx1(+/+) mice developed diabetes between 8 and 10 weeks of age, haploinsufficiency for Pdx1 caused diabetes in newborn Irs2(-/-) mice.
920 11994408 By contrast, transgenic expression of Pdx1 restored beta cell mass and function in Irs2(-/-) mice and promoted glucose tolerance throughout life, as these mice survived for at least 20 months without diabetes.
921 11994408 Our results suggest that dysregulation of Pdx1 might represent a common link between ordinary type 2 diabetes and MODY.
922 11994408 Pdx1 restores beta cell function in Irs2 knockout mice.
923 11994408 Mutations in Pdx1 or upstream hepatocyte nuclear factors cause autosomal forms of early-onset diabetes (maturity-onset diabetes of the young [MODY]).
924 11994408 In mice, the Irs2 branch of the insulin/Igf signaling system mediates peripheral insulin action and pancreatic beta cell growth and function.
925 11994408 To investigate whether beta cell failure in Irs2(-/-) mice might be related to dysfunction of MODY-related transcription factors, we measured the expression of Pdx1 in islets from young Irs2(-/-) mice.
926 11994408 Before the onset of diabetes, Pdx1 was reduced in islets from Irs2(-/-) mice, whereas it was expressed normally in islets from wild-type or Irs1(-/-) mice, which do not develop diabetes.
927 11994408 Whereas male Irs2(-/-)Pdx1(+/+) mice developed diabetes between 8 and 10 weeks of age, haploinsufficiency for Pdx1 caused diabetes in newborn Irs2(-/-) mice.
928 11994408 By contrast, transgenic expression of Pdx1 restored beta cell mass and function in Irs2(-/-) mice and promoted glucose tolerance throughout life, as these mice survived for at least 20 months without diabetes.
929 11994408 Our results suggest that dysregulation of Pdx1 might represent a common link between ordinary type 2 diabetes and MODY.
930 11994408 Pdx1 restores beta cell function in Irs2 knockout mice.
931 11994408 Mutations in Pdx1 or upstream hepatocyte nuclear factors cause autosomal forms of early-onset diabetes (maturity-onset diabetes of the young [MODY]).
932 11994408 In mice, the Irs2 branch of the insulin/Igf signaling system mediates peripheral insulin action and pancreatic beta cell growth and function.
933 11994408 To investigate whether beta cell failure in Irs2(-/-) mice might be related to dysfunction of MODY-related transcription factors, we measured the expression of Pdx1 in islets from young Irs2(-/-) mice.
934 11994408 Before the onset of diabetes, Pdx1 was reduced in islets from Irs2(-/-) mice, whereas it was expressed normally in islets from wild-type or Irs1(-/-) mice, which do not develop diabetes.
935 11994408 Whereas male Irs2(-/-)Pdx1(+/+) mice developed diabetes between 8 and 10 weeks of age, haploinsufficiency for Pdx1 caused diabetes in newborn Irs2(-/-) mice.
936 11994408 By contrast, transgenic expression of Pdx1 restored beta cell mass and function in Irs2(-/-) mice and promoted glucose tolerance throughout life, as these mice survived for at least 20 months without diabetes.
937 11994408 Our results suggest that dysregulation of Pdx1 might represent a common link between ordinary type 2 diabetes and MODY.
938 12050210 Twenty-two unrelated pediatric MODY patients and 97 relatives were screened for mutations in the coding region of the glucokinase (GCK), hepatic nuclear factor- HNF-1alpha and HNF4alpha genes using PCR-single strand conformation polymorphism and/or direct sequencing.
939 12050210 Mutations in the GCK/MODY2 gene are the most common cause of MODY in our population as recruited from pediatric and adolescent index patients.
940 12050210 Clinical expression of MODY3 and MODY1 mutations, the second and third groups of defects found, was more severe, including the frequent development of chronic complications.
941 12050210 Twenty-two unrelated pediatric MODY patients and 97 relatives were screened for mutations in the coding region of the glucokinase (GCK), hepatic nuclear factor- HNF-1alpha and HNF4alpha genes using PCR-single strand conformation polymorphism and/or direct sequencing.
942 12050210 Mutations in the GCK/MODY2 gene are the most common cause of MODY in our population as recruited from pediatric and adolescent index patients.
943 12050210 Clinical expression of MODY3 and MODY1 mutations, the second and third groups of defects found, was more severe, including the frequent development of chronic complications.
944 12050210 Twenty-two unrelated pediatric MODY patients and 97 relatives were screened for mutations in the coding region of the glucokinase (GCK), hepatic nuclear factor- HNF-1alpha and HNF4alpha genes using PCR-single strand conformation polymorphism and/or direct sequencing.
945 12050210 Mutations in the GCK/MODY2 gene are the most common cause of MODY in our population as recruited from pediatric and adolescent index patients.
946 12050210 Clinical expression of MODY3 and MODY1 mutations, the second and third groups of defects found, was more severe, including the frequent development of chronic complications.
947 12083813 An enhancer element has recently been characterized 6 kb 5' of the HNF4alpha P1 promoter containing binding sites for the transcription factors HNF1, HNF4, HNF3, and C/EBP, which are overlapped by glucocorticoid consensus sites.
948 12086970 Maturity-onset diabetes of the young (MODY) is a monogenic dominantly inherited form of diabetes that is characterized by defective insulin secretion from the pancreatic beta-cells.
949 12110948 Mutations in hepatocyte nuclear factor 4alpha (HNF4alpha) gene associated with diabetes result in greater loss of HNF4alpha function in pancreatic beta-cells than in nonpancreatic beta-cells and in reduced activation of the apolipoprotein CIII promoter in hepatic cells.
950 12110948 The R324H mutation had no effect on HNF4alpha function with either the HNF1alpha and L-type pyruvate kinase (LPK) promoters, but the D126Y and D126H mutations impaired HNF4alpha transcriptional activities in all tested cell lines.
951 12110948 Mutations in hepatocyte nuclear factor 4alpha (HNF4alpha) gene associated with diabetes result in greater loss of HNF4alpha function in pancreatic beta-cells than in nonpancreatic beta-cells and in reduced activation of the apolipoprotein CIII promoter in hepatic cells.
952 12110948 The R324H mutation had no effect on HNF4alpha function with either the HNF1alpha and L-type pyruvate kinase (LPK) promoters, but the D126Y and D126H mutations impaired HNF4alpha transcriptional activities in all tested cell lines.
953 12145145 Haploinsufficiency of HNF-1alpha or HNF-4alpha results in MODY because of defective function of pancreatic islet cells.
954 12145145 The network contains an indispensable core component formed by a positive cross-regulatory feedback circuit between HNF-1alpha and HNF-4alpha.
955 12145145 However, the loss of one HNF-1alpha or HNF-4alpha allele can increase the probability that the feedback circuit is permanently switched off, resulting in decreased expression of all four alleles selectively in beta-cells.
956 12145145 Haploinsufficiency of HNF-1alpha or HNF-4alpha results in MODY because of defective function of pancreatic islet cells.
957 12145145 The network contains an indispensable core component formed by a positive cross-regulatory feedback circuit between HNF-1alpha and HNF-4alpha.
958 12145145 However, the loss of one HNF-1alpha or HNF-4alpha allele can increase the probability that the feedback circuit is permanently switched off, resulting in decreased expression of all four alleles selectively in beta-cells.
959 12145145 Haploinsufficiency of HNF-1alpha or HNF-4alpha results in MODY because of defective function of pancreatic islet cells.
960 12145145 The network contains an indispensable core component formed by a positive cross-regulatory feedback circuit between HNF-1alpha and HNF-4alpha.
961 12145145 However, the loss of one HNF-1alpha or HNF-4alpha allele can increase the probability that the feedback circuit is permanently switched off, resulting in decreased expression of all four alleles selectively in beta-cells.
962 12173691 Maturity-onset diabetes of the young (MODY) is a genetic subgroup of diabetes characterised by an autosomal dominant inheritance and early onset, non-insulin dependent diabetes.
963 12173691 Patients with mutation in genes encoding the transcription factors, hepatocyte nuclear factor (HNF)- 1alpha, HNF-4alpha, HNF-1beta and insulin promoter factor 1 (IPF-1) have a common progressive beta-cell failure resulting in increasing hyperglycaemia and treatment requirements.
964 12173691 Patients with transcription factor mutations have a range of discrete extra-pancreatic phenotypes including a low renal threshold for glucose with HNF-1alpha mutations, altered lipids and lipoproteins with HNF-4alpha mutations and a variety of cystic renal diseases and uterine and genital developmental disorders with HNF-1beta mutations.
965 12173691 Maturity-onset diabetes of the young (MODY) is a genetic subgroup of diabetes characterised by an autosomal dominant inheritance and early onset, non-insulin dependent diabetes.
966 12173691 Patients with mutation in genes encoding the transcription factors, hepatocyte nuclear factor (HNF)- 1alpha, HNF-4alpha, HNF-1beta and insulin promoter factor 1 (IPF-1) have a common progressive beta-cell failure resulting in increasing hyperglycaemia and treatment requirements.
967 12173691 Patients with transcription factor mutations have a range of discrete extra-pancreatic phenotypes including a low renal threshold for glucose with HNF-1alpha mutations, altered lipids and lipoproteins with HNF-4alpha mutations and a variety of cystic renal diseases and uterine and genital developmental disorders with HNF-1beta mutations.
968 12173691 Maturity-onset diabetes of the young (MODY) is a genetic subgroup of diabetes characterised by an autosomal dominant inheritance and early onset, non-insulin dependent diabetes.
969 12173691 Patients with mutation in genes encoding the transcription factors, hepatocyte nuclear factor (HNF)- 1alpha, HNF-4alpha, HNF-1beta and insulin promoter factor 1 (IPF-1) have a common progressive beta-cell failure resulting in increasing hyperglycaemia and treatment requirements.
970 12173691 Patients with transcription factor mutations have a range of discrete extra-pancreatic phenotypes including a low renal threshold for glucose with HNF-1alpha mutations, altered lipids and lipoproteins with HNF-4alpha mutations and a variety of cystic renal diseases and uterine and genital developmental disorders with HNF-1beta mutations.
971 12203996 Several genes are known to induce MODY : HNF4A/MODY1, GCK/MODY2, TCF1/MODY3, IPF1/MODY4, TCF2/MODY5 and NEUROD1/MODY6.
972 12235114 Mutations in the genes encoding hepatocyte nuclear factor 4alpha (HNF-4alpha) and HNF-1alpha impair insulin secretion and cause maturity onset diabetes of the young (MODY).
973 12235114 HNF-4alpha is known to be an essential positive regulator of HNF-1alpha.
974 12235114 More recent data demonstrates that HNF-4alpha expression is dependent on HNF-1alpha in mouse pancreatic islets and exocrine cells.
975 12235114 This effect is mediated by binding of HNF-1alpha to a tissue-specific promoter (P2) located 45.6 kb upstream from the previously characterized Hnf4alpha promoter (P1).
976 12235114 These findings provide genetic evidence that HNF-1alpha serves as an upstream regulator of HNF-4alpha and interacts directly with the P2 promoter in human pancreatic cells.
977 12235114 Mutations in the genes encoding hepatocyte nuclear factor 4alpha (HNF-4alpha) and HNF-1alpha impair insulin secretion and cause maturity onset diabetes of the young (MODY).
978 12235114 HNF-4alpha is known to be an essential positive regulator of HNF-1alpha.
979 12235114 More recent data demonstrates that HNF-4alpha expression is dependent on HNF-1alpha in mouse pancreatic islets and exocrine cells.
980 12235114 This effect is mediated by binding of HNF-1alpha to a tissue-specific promoter (P2) located 45.6 kb upstream from the previously characterized Hnf4alpha promoter (P1).
981 12235114 These findings provide genetic evidence that HNF-1alpha serves as an upstream regulator of HNF-4alpha and interacts directly with the P2 promoter in human pancreatic cells.
982 12235114 Mutations in the genes encoding hepatocyte nuclear factor 4alpha (HNF-4alpha) and HNF-1alpha impair insulin secretion and cause maturity onset diabetes of the young (MODY).
983 12235114 HNF-4alpha is known to be an essential positive regulator of HNF-1alpha.
984 12235114 More recent data demonstrates that HNF-4alpha expression is dependent on HNF-1alpha in mouse pancreatic islets and exocrine cells.
985 12235114 This effect is mediated by binding of HNF-1alpha to a tissue-specific promoter (P2) located 45.6 kb upstream from the previously characterized Hnf4alpha promoter (P1).
986 12235114 These findings provide genetic evidence that HNF-1alpha serves as an upstream regulator of HNF-4alpha and interacts directly with the P2 promoter in human pancreatic cells.
987 12235114 Mutations in the genes encoding hepatocyte nuclear factor 4alpha (HNF-4alpha) and HNF-1alpha impair insulin secretion and cause maturity onset diabetes of the young (MODY).
988 12235114 HNF-4alpha is known to be an essential positive regulator of HNF-1alpha.
989 12235114 More recent data demonstrates that HNF-4alpha expression is dependent on HNF-1alpha in mouse pancreatic islets and exocrine cells.
990 12235114 This effect is mediated by binding of HNF-1alpha to a tissue-specific promoter (P2) located 45.6 kb upstream from the previously characterized Hnf4alpha promoter (P1).
991 12235114 These findings provide genetic evidence that HNF-1alpha serves as an upstream regulator of HNF-4alpha and interacts directly with the P2 promoter in human pancreatic cells.
992 12235114 Mutations in the genes encoding hepatocyte nuclear factor 4alpha (HNF-4alpha) and HNF-1alpha impair insulin secretion and cause maturity onset diabetes of the young (MODY).
993 12235114 HNF-4alpha is known to be an essential positive regulator of HNF-1alpha.
994 12235114 More recent data demonstrates that HNF-4alpha expression is dependent on HNF-1alpha in mouse pancreatic islets and exocrine cells.
995 12235114 This effect is mediated by binding of HNF-1alpha to a tissue-specific promoter (P2) located 45.6 kb upstream from the previously characterized Hnf4alpha promoter (P1).
996 12235114 These findings provide genetic evidence that HNF-1alpha serves as an upstream regulator of HNF-4alpha and interacts directly with the P2 promoter in human pancreatic cells.
997 12359128 The study of maturity-onset diabetes of the young (MODY), an autosomal dominant form of early-onset diabetes mellitus characterised by defective insulin secretion has been extremely successful in two ways.
998 12359128 Five of the six MODY genes, TCF1 (encoding HNF-1alpha), TCF2 (encoding HNF-1beta) HNF4A, insulin promoter factor (IPF)1, and NEUROD1, are transcription factors that operate in a complex network of gene regulation.
999 12359128 This includes the co-regulation of HNF-1alpha and HNF-4alpha by each other.
1000 12359128 The study of maturity-onset diabetes of the young (MODY), an autosomal dominant form of early-onset diabetes mellitus characterised by defective insulin secretion has been extremely successful in two ways.
1001 12359128 Five of the six MODY genes, TCF1 (encoding HNF-1alpha), TCF2 (encoding HNF-1beta) HNF4A, insulin promoter factor (IPF)1, and NEUROD1, are transcription factors that operate in a complex network of gene regulation.
1002 12359128 This includes the co-regulation of HNF-1alpha and HNF-4alpha by each other.
1003 12359128 The study of maturity-onset diabetes of the young (MODY), an autosomal dominant form of early-onset diabetes mellitus characterised by defective insulin secretion has been extremely successful in two ways.
1004 12359128 Five of the six MODY genes, TCF1 (encoding HNF-1alpha), TCF2 (encoding HNF-1beta) HNF4A, insulin promoter factor (IPF)1, and NEUROD1, are transcription factors that operate in a complex network of gene regulation.
1005 12359128 This includes the co-regulation of HNF-1alpha and HNF-4alpha by each other.
1006 12475768 In addition, HNF4a and Mybl2 were screened for mutations and new polymorphisms.
1007 12475773 Diabetes in subjects with hepatocyte nuclear factor (HNF)-1alpha gene mutations (maturity-onset diabetes of the young [MODY]-3) is characterized by impaired insulin secretion.
1008 12475772 Except for MODY2 (glucokinase), all other MODY subtypes have been linked to transcription factors.
1009 12475772 The existence of a regulatory circuit between HNF-4alpha and HNF-1alpha is confirmed in these cell models.
1010 12475772 The MODY4 gene, IPF-1 (insulin promoter factor-1)/PDX-1 (pancreas duodenum homeobox-1), controls not only the transcription of insulin but also expression of enzymes involved in its processing.
1011 12475772 Suppression of Pdx-1 function in INS-1 cells does not alter glucose metabolism but rather inhibits insulin release by impairing steps distal to the generation of mitochondrial coupling factors.
1012 12475772 Except for MODY2 (glucokinase), all other MODY subtypes have been linked to transcription factors.
1013 12475772 The existence of a regulatory circuit between HNF-4alpha and HNF-1alpha is confirmed in these cell models.
1014 12475772 The MODY4 gene, IPF-1 (insulin promoter factor-1)/PDX-1 (pancreas duodenum homeobox-1), controls not only the transcription of insulin but also expression of enzymes involved in its processing.
1015 12475772 Suppression of Pdx-1 function in INS-1 cells does not alter glucose metabolism but rather inhibits insulin release by impairing steps distal to the generation of mitochondrial coupling factors.
1016 12606533 Maturity-onset diabetes of the young (MODY) is a heterogeneous single gene disorder characterized by non-insulin-dependent diabetes, an early onset and autosomal dominant inheritance.
1017 12618086 Mutations in the HNF1-alpha gene cause maturity-onset diabetes of the young (MODY), but the exact mechanism is not known.
1018 12618086 These were 92bp upstream of SLC3A1, 52bp upstream of PCBD (DCOH), and 42202bp upstream of TCF2(HNF1-beta).
1019 12627330 Genetic epidemiology of MODY in the Czech republic: new mutations in the MODY genes HNF-4alpha, GCK and HNF-1alpha.
1020 12643132 Maturity-onset diabetes of the young (MODY) are monogenic forms of type 2 diabetes that are characterized by an early disease onset, autosomal-dominant inheritance, and defects in insulin secretion.
1021 12643132 The majority of the MODY subtypes are caused by mutations in transcription factors that include hepatocyte nuclear factor (HNF)-4 alpha, HNF-1 alpha, PDX-1, HNF-1 beta, and NEURO-DI/BETA-2.
1022 12643132 In addition, genetic defects in the glucokinase gene, the glucose sensor of the pancreatic beta cells, and the insulin gene also lead to impaired glucose tolerance.
1023 12643132 Maturity-onset diabetes of the young (MODY) are monogenic forms of type 2 diabetes that are characterized by an early disease onset, autosomal-dominant inheritance, and defects in insulin secretion.
1024 12643132 The majority of the MODY subtypes are caused by mutations in transcription factors that include hepatocyte nuclear factor (HNF)-4 alpha, HNF-1 alpha, PDX-1, HNF-1 beta, and NEURO-DI/BETA-2.
1025 12643132 In addition, genetic defects in the glucokinase gene, the glucose sensor of the pancreatic beta cells, and the insulin gene also lead to impaired glucose tolerance.
1026 12646418 HNF-1alpha and endodermal transcription factors cooperatively activate Fabpl: MODY3 mutations abrogate cooperativity.
1027 12646418 An Fabpl transgene was directly activated through cognate sites by HNF-1alpha and HNF-1beta, as well as five other endodermal factors: CDX-1, C/EBPbeta, GATA-4, FoxA2, and HNF-4alpha.
1028 12646418 HNF-1alpha activated the Fabpl transgene by as much as 60-fold greater in the presence of the other five endodermal factors than in their absence, accounting for up to one-half the total transgene activation by the group of six factors.
1029 12646418 Furthermore, whereas wild-type HNF-1alpha exhibited pairwise cooperative synergy with each of the other five factors, the R131Q mutant could synergize only with GATA-4 and C/EBPbeta.
1030 12697672 Due to the presence of the activation function module AF-1, HNF4 alpha isoforms originating from the P1 promoter exhibit stronger transcriptional activities and recruit coactivators more efficiently than isoforms driven by the P2 promoter.
1031 12716764 The orphan receptor small heterodimer partner (SHP, NR0B2) modulates the transcription activity of the MODY1 gene HNF4a.
1032 12740371 AMP-activated protein kinase regulates HNF4alpha transcriptional activity by inhibiting dimer formation and decreasing protein stability.
1033 12740371 The transcription factor hepatic nuclear factor 4alpha (HNF4alpha) is an orphan nuclear receptor that regulates the expression of genes involved in energy metabolism in the liver, intestine, and endocrine pancreas.
1034 12740371 Here we demonstrate that AMPK directly phosphorylates HNF4alpha and represses its transcriptional activity.
1035 12740371 AMPK-mediated phosphorylation of HNF4alpha on serine 304 had a 2-fold effect, reducing the ability of the transcription factor to form homodimers and bind DNA and increasing its degradation rate in vivo.
1036 12740371 These results demonstrate that HNF4alpha is a downstream target of AMPK and raise the possibility that one of the effects of AMPK activation is reduced expression of HNF4alpha target genes.
1037 12740371 AMP-activated protein kinase regulates HNF4alpha transcriptional activity by inhibiting dimer formation and decreasing protein stability.
1038 12740371 The transcription factor hepatic nuclear factor 4alpha (HNF4alpha) is an orphan nuclear receptor that regulates the expression of genes involved in energy metabolism in the liver, intestine, and endocrine pancreas.
1039 12740371 Here we demonstrate that AMPK directly phosphorylates HNF4alpha and represses its transcriptional activity.
1040 12740371 AMPK-mediated phosphorylation of HNF4alpha on serine 304 had a 2-fold effect, reducing the ability of the transcription factor to form homodimers and bind DNA and increasing its degradation rate in vivo.
1041 12740371 These results demonstrate that HNF4alpha is a downstream target of AMPK and raise the possibility that one of the effects of AMPK activation is reduced expression of HNF4alpha target genes.
1042 12740371 AMP-activated protein kinase regulates HNF4alpha transcriptional activity by inhibiting dimer formation and decreasing protein stability.
1043 12740371 The transcription factor hepatic nuclear factor 4alpha (HNF4alpha) is an orphan nuclear receptor that regulates the expression of genes involved in energy metabolism in the liver, intestine, and endocrine pancreas.
1044 12740371 Here we demonstrate that AMPK directly phosphorylates HNF4alpha and represses its transcriptional activity.
1045 12740371 AMPK-mediated phosphorylation of HNF4alpha on serine 304 had a 2-fold effect, reducing the ability of the transcription factor to form homodimers and bind DNA and increasing its degradation rate in vivo.
1046 12740371 These results demonstrate that HNF4alpha is a downstream target of AMPK and raise the possibility that one of the effects of AMPK activation is reduced expression of HNF4alpha target genes.
1047 12740371 AMP-activated protein kinase regulates HNF4alpha transcriptional activity by inhibiting dimer formation and decreasing protein stability.
1048 12740371 The transcription factor hepatic nuclear factor 4alpha (HNF4alpha) is an orphan nuclear receptor that regulates the expression of genes involved in energy metabolism in the liver, intestine, and endocrine pancreas.
1049 12740371 Here we demonstrate that AMPK directly phosphorylates HNF4alpha and represses its transcriptional activity.
1050 12740371 AMPK-mediated phosphorylation of HNF4alpha on serine 304 had a 2-fold effect, reducing the ability of the transcription factor to form homodimers and bind DNA and increasing its degradation rate in vivo.
1051 12740371 These results demonstrate that HNF4alpha is a downstream target of AMPK and raise the possibility that one of the effects of AMPK activation is reduced expression of HNF4alpha target genes.
1052 12740371 AMP-activated protein kinase regulates HNF4alpha transcriptional activity by inhibiting dimer formation and decreasing protein stability.
1053 12740371 The transcription factor hepatic nuclear factor 4alpha (HNF4alpha) is an orphan nuclear receptor that regulates the expression of genes involved in energy metabolism in the liver, intestine, and endocrine pancreas.
1054 12740371 Here we demonstrate that AMPK directly phosphorylates HNF4alpha and represses its transcriptional activity.
1055 12740371 AMPK-mediated phosphorylation of HNF4alpha on serine 304 had a 2-fold effect, reducing the ability of the transcription factor to form homodimers and bind DNA and increasing its degradation rate in vivo.
1056 12740371 These results demonstrate that HNF4alpha is a downstream target of AMPK and raise the possibility that one of the effects of AMPK activation is reduced expression of HNF4alpha target genes.
1057 12807885 Peroxisome proliferator-activated receptor gamma coactivator-1alpha (PGC-1alpha) is a transcriptional coactivator that regulates multiple aspects of cellular energy metabolism, including mitochondrial biogenesis, hepatic gluconeogenesis, and beta-oxidation of fatty acids.
1058 12807885 We have recently described PGC-1beta, a novel transcriptional coactivator that is a homolog of PGC-1alpha.
1059 12807885 Although PGC-1beta shares significant sequence similarity and tissue distribution with PGC-1alpha, the biological activities of PGC-1beta in the regulation of cellular metabolism is unknown.
1060 12807885 PGC-1beta, like PGC-1alpha, potently induces the expression of an array of mitochondrial genes involved in oxidative metabolism.
1061 12807885 However, in contrast to PGC-1alpha, PGC-1beta poorly activates the expression of gluconeogenic genes in hepatocytes or liver in vivo, illustrating that these two coactivators play distinct roles in hepatic glucose metabolism.
1062 12807885 The reduced ability of PGC-1beta to induce gluconeogenic genes is due, at least in part, to its inability to physically associate with and coactivate hepatic nuclear receptor 4alpha (HNF4alpha) and forkhead transcription factor O1 (FOXO1), two critical transcription factors that mediate the activation of gluconeogenic gene expression by PGC-1alpha.
1063 12807885 These data illustrate that PGC-1beta and PGC-1alpha have distinct arrays of activities in hepatic energy metabolism.
1064 12837760 Neurogenin3 and hepatic nuclear factor 1 cooperate in activating pancreatic expression of Pax4.
1065 12837760 During fetal development, paired/homeodomain transcription factor Pax4 controls the formation of the insulin-producing beta cells and the somatostatin-producing delta cells in the islets of Langerhans in the pancreas.
1066 12837760 This short sequence contains binding sites for homeodomain transcription factors PDX1 and hepatic nuclear factor (HNF)1, nuclear receptor HNF4alpha, and basic helix-loop-helix factor Neurogenin3.
1067 12837760 In the current study we demonstrate that the HNF1alpha and Neurogenin3 binding sites are critical for activity of the region through synergy between the two proteins.
1068 12837760 Furthermore, exogenous expression of Neurogenin3 is sufficient to induce expression of the endogenous pax4 gene in the mouse pancreatic ductal cell line mPAC, which already expresses HNF1alpha, whereas expression of both Neurogenin3 and HNF1alpha are necessary to activate the pax4 gene in the fibroblast cell line NIH3T3.
1069 12837760 These data demonstrate how Neurogenin3 and HNF1alpha activate the pax4 gene during the cascade of gene expression events that control pancreatic endocrine cell development.
1070 12910053 Studies in MODY individuals and families lead to a genetic definition of MODY subtypes with profound implications for our understanding of gene mutations involved in the development of T2D through our understanding on the major role of these genes and on their transcriptional activity on b-cell development and function; and on the regulation of glucose and insulin metabolism.
1071 14551916 Polymorphisms in five of 15 genes (33%) encoding molecules known to primarily influence pancreatic beta-cell function-ABCC8 (sulphonylurea receptor), KCNJ11 (KIR6.2), SLC2A2 (GLUT2), HNF4A (HNF4alpha), and INS (insulin)-significantly altered disease risk, and in three genes, the risk allele, haplotype, or both had a biologically consistent effect on a relevant physiological trait in the QT study.
1072 14551916 We examined 35 genes predicted to have their major influence on insulin action, and three (9%)-INSR, PIK3R1, and SOS1-showed significant associations with diabetes.
1073 14633861 Regulation of apolipoprotein M gene expression by MODY3 gene hepatocyte nuclear factor-1alpha: haploinsufficiency is associated with reduced serum apolipoprotein M levels.
1074 14633861 Heterozygous mutations in the HNF-1alpha gene are responsible for maturity-onset diabetes of the young (MODY3), which is characterized by pancreatic beta-cell-deficient insulin secretion.
1075 14633861 In this study, we show that Hnf-1alpha is a potent transcriptional activator of the gene encoding apolipoprotein M (apoM), a lipoprotein that is associated with the HDL particle.
1076 14633861 Mutant Hnf-1alpha(-/-) mice completely lack expression of apoM in the liver and the kidney.
1077 14633861 Serum apoM levels in Hnf-1alpha(+/-) mice are reduced approximately 50% compared with wild-type animals and are absent in the HDL and HDLc fractions of Hnf-1alpha(-/-).
1078 14633861 We show that Hnf-1alpha is a potent activator of the apoM promoter, that a specific mutation in the HNF-1 binding site abolished transcriptional activation of the apoM gene, and that Hnf-1alpha protein can bind to the Hnf-1 binding site of the apoM promoter in vitro.
1079 14633861 To investigate whether patients with mutations in HNF-1alpha mutations (MODY3) have reduced serum apoM levels, we measured apoM levels in the serum of nine HNF-1alpha/MODY3 patients, nine normal matched control subjects (HNF-1alpha(+/+)), and nine HNF-4alpha/MODY1 subjects.
1080 14633861 Serum levels of apoM were decreased in HNF-1alpha/MODY3 subjects when compared with control subjects (P < 0.02) as well as with HNF-4alpha/MODY1 subjects, indicating that HNF-1alpha haploinsufficiency rather than hyperglycemia is the primary cause of decreased serum apoM protein concentrations.
1081 14633861 This study demonstrates that HNF-1alpha is required for apoM expression in vivo and that heterozygous HNF-1alpha mutations lead to an HNF-1alpha-dependent impairment of apoM expression.
1082 14633861 ApoM levels may be a useful serum marker for the identification of MODY3 patients.
1083 14633861 Regulation of apolipoprotein M gene expression by MODY3 gene hepatocyte nuclear factor-1alpha: haploinsufficiency is associated with reduced serum apolipoprotein M levels.
1084 14633861 Heterozygous mutations in the HNF-1alpha gene are responsible for maturity-onset diabetes of the young (MODY3), which is characterized by pancreatic beta-cell-deficient insulin secretion.
1085 14633861 In this study, we show that Hnf-1alpha is a potent transcriptional activator of the gene encoding apolipoprotein M (apoM), a lipoprotein that is associated with the HDL particle.
1086 14633861 Mutant Hnf-1alpha(-/-) mice completely lack expression of apoM in the liver and the kidney.
1087 14633861 Serum apoM levels in Hnf-1alpha(+/-) mice are reduced approximately 50% compared with wild-type animals and are absent in the HDL and HDLc fractions of Hnf-1alpha(-/-).
1088 14633861 We show that Hnf-1alpha is a potent activator of the apoM promoter, that a specific mutation in the HNF-1 binding site abolished transcriptional activation of the apoM gene, and that Hnf-1alpha protein can bind to the Hnf-1 binding site of the apoM promoter in vitro.
1089 14633861 To investigate whether patients with mutations in HNF-1alpha mutations (MODY3) have reduced serum apoM levels, we measured apoM levels in the serum of nine HNF-1alpha/MODY3 patients, nine normal matched control subjects (HNF-1alpha(+/+)), and nine HNF-4alpha/MODY1 subjects.
1090 14633861 Serum levels of apoM were decreased in HNF-1alpha/MODY3 subjects when compared with control subjects (P < 0.02) as well as with HNF-4alpha/MODY1 subjects, indicating that HNF-1alpha haploinsufficiency rather than hyperglycemia is the primary cause of decreased serum apoM protein concentrations.
1091 14633861 This study demonstrates that HNF-1alpha is required for apoM expression in vivo and that heterozygous HNF-1alpha mutations lead to an HNF-1alpha-dependent impairment of apoM expression.
1092 14633861 ApoM levels may be a useful serum marker for the identification of MODY3 patients.
1093 14654354 Characterization of the human glycerol kinase promoter: identification of a functional HNF-4alpha binding site and evidence for transcriptional activation.
1094 14654354 Mutations in the GK gene result in a rare inborn error of metabolism, GK deficiency (GKD), and at least one of these mutations (N288D) is associated with insulin resistance and diabetes mellitus.
1095 14654354 The involvement of both GK and HNF-4alpha in the etiology of diabetes mellitus is intriguing, and we speculate that HNF-4alpha represents a potential modifier of the GKD phenotype.
1096 14654354 Characterization of the human glycerol kinase promoter: identification of a functional HNF-4alpha binding site and evidence for transcriptional activation.
1097 14654354 Mutations in the GK gene result in a rare inborn error of metabolism, GK deficiency (GKD), and at least one of these mutations (N288D) is associated with insulin resistance and diabetes mellitus.
1098 14654354 The involvement of both GK and HNF-4alpha in the etiology of diabetes mellitus is intriguing, and we speculate that HNF-4alpha represents a potential modifier of the GKD phenotype.
1099 14694850 Major break-throughs in the genetic sciences of type 2 diabetes have been identifications of insulin receptor gene mutations in syndromes of severe insulin resistance and mutations in pancreatic beta-cell genes in the monogenic sub-group of type 2 diabetes: maturity-onset-diabetes-of-the-young, MODY.
1100 14694850 The studies reported in this thesis are excerpts from an extensive strategy of genetically dissecting (mutation analysis) in: 1) patients with the common form of late-onset type 2 diabetes mellitus the pathways that transduce the insulin signals from the plasma membrane to the activation of glycogen synthesis in skeletal muscle, and in 2) patients with either late-onset type diabetes or MODY the pathways involved in normal beta-cell development and beta-cell function (insulin secretion).
1101 14694850 We could not confirm that a Val985Met variant in the insulin receptor is associated with type 2 diabetes or that the Met326Val of the p85 alpha regulatory subunit of the phosphoinositide-3 kinase is associated with insulin resistance.
1102 14694850 We found no coding mutations (missense) in the insulin signalling protein kinases but we confirmed that the 5 bp deletion (PP1ARE) in the 3'-end of the PPP1R3 gene that encodes the glycogen-associated regulatory subunit of protein phosphatase-1 (PP1G) is associated with insulin resistance estimated as insulin mediated glucose uptake.
1103 14694850 In contrast to protein kinases in skeletal muscles the genes encoding beta-cell transcription factors (IPF-1, NeuroD1/BETA2, and Neurogenin 3) are polymorphic but we could not confirm that the Asp76Asn of IPF-1 is a susceptibility gene for late-onset type 2 diabetes.
1104 14694850 On the other hand we confirmed that the Ala45Thr variant in NeuroD1/BETA2 may represent a susceptibility gene for type 1 diabetes but none of these genes revealed any MODY-specific mutations.
1105 14694850 Also the gene encoding the ATP-regulatable potassium channels of the beta-cell (Kir6.2) is polymorphic but none of these polymorphisms associated with changes in glucose-induced insulin secretion.
1106 14694850 Major break-throughs in the genetic sciences of type 2 diabetes have been identifications of insulin receptor gene mutations in syndromes of severe insulin resistance and mutations in pancreatic beta-cell genes in the monogenic sub-group of type 2 diabetes: maturity-onset-diabetes-of-the-young, MODY.
1107 14694850 The studies reported in this thesis are excerpts from an extensive strategy of genetically dissecting (mutation analysis) in: 1) patients with the common form of late-onset type 2 diabetes mellitus the pathways that transduce the insulin signals from the plasma membrane to the activation of glycogen synthesis in skeletal muscle, and in 2) patients with either late-onset type diabetes or MODY the pathways involved in normal beta-cell development and beta-cell function (insulin secretion).
1108 14694850 We could not confirm that a Val985Met variant in the insulin receptor is associated with type 2 diabetes or that the Met326Val of the p85 alpha regulatory subunit of the phosphoinositide-3 kinase is associated with insulin resistance.
1109 14694850 We found no coding mutations (missense) in the insulin signalling protein kinases but we confirmed that the 5 bp deletion (PP1ARE) in the 3'-end of the PPP1R3 gene that encodes the glycogen-associated regulatory subunit of protein phosphatase-1 (PP1G) is associated with insulin resistance estimated as insulin mediated glucose uptake.
1110 14694850 In contrast to protein kinases in skeletal muscles the genes encoding beta-cell transcription factors (IPF-1, NeuroD1/BETA2, and Neurogenin 3) are polymorphic but we could not confirm that the Asp76Asn of IPF-1 is a susceptibility gene for late-onset type 2 diabetes.
1111 14694850 On the other hand we confirmed that the Ala45Thr variant in NeuroD1/BETA2 may represent a susceptibility gene for type 1 diabetes but none of these genes revealed any MODY-specific mutations.
1112 14694850 Also the gene encoding the ATP-regulatable potassium channels of the beta-cell (Kir6.2) is polymorphic but none of these polymorphisms associated with changes in glucose-induced insulin secretion.
1113 14694850 Major break-throughs in the genetic sciences of type 2 diabetes have been identifications of insulin receptor gene mutations in syndromes of severe insulin resistance and mutations in pancreatic beta-cell genes in the monogenic sub-group of type 2 diabetes: maturity-onset-diabetes-of-the-young, MODY.
1114 14694850 The studies reported in this thesis are excerpts from an extensive strategy of genetically dissecting (mutation analysis) in: 1) patients with the common form of late-onset type 2 diabetes mellitus the pathways that transduce the insulin signals from the plasma membrane to the activation of glycogen synthesis in skeletal muscle, and in 2) patients with either late-onset type diabetes or MODY the pathways involved in normal beta-cell development and beta-cell function (insulin secretion).
1115 14694850 We could not confirm that a Val985Met variant in the insulin receptor is associated with type 2 diabetes or that the Met326Val of the p85 alpha regulatory subunit of the phosphoinositide-3 kinase is associated with insulin resistance.
1116 14694850 We found no coding mutations (missense) in the insulin signalling protein kinases but we confirmed that the 5 bp deletion (PP1ARE) in the 3'-end of the PPP1R3 gene that encodes the glycogen-associated regulatory subunit of protein phosphatase-1 (PP1G) is associated with insulin resistance estimated as insulin mediated glucose uptake.
1117 14694850 In contrast to protein kinases in skeletal muscles the genes encoding beta-cell transcription factors (IPF-1, NeuroD1/BETA2, and Neurogenin 3) are polymorphic but we could not confirm that the Asp76Asn of IPF-1 is a susceptibility gene for late-onset type 2 diabetes.
1118 14694850 On the other hand we confirmed that the Ala45Thr variant in NeuroD1/BETA2 may represent a susceptibility gene for type 1 diabetes but none of these genes revealed any MODY-specific mutations.
1119 14694850 Also the gene encoding the ATP-regulatable potassium channels of the beta-cell (Kir6.2) is polymorphic but none of these polymorphisms associated with changes in glucose-induced insulin secretion.
1120 14741192 These three regions were functionally characterized using the chloramphenicol acetyltransferase (CAT) reporter assay, in which the conserved 5' regions of mouse HNF-4alpha were cloned in front of the herpes simplex virus thymidine kinase promoter driving transcription of the CAT gene.
1121 14747304 Haploinsufficiency is therefore likely to be the most important mutational mechanism of HNF-1alpha mutations causing MODY.
1122 14982928 To further assess potential mechanisms of activation, we have solved a structure of human HNF-4alpha bound to both fatty acid ligand and a coactivator sequence derived from SRC-1.
1123 14988562 To gain insight into this circuitry, we used chromatin immunoprecipitation combined with promoter microarrays to identify systematically the genes occupied by the transcriptional regulators HNF1alpha, HNF4alpha, and HNF6, together with RNA polymerase II, in human liver and pancreatic islets.
1124 14988562 We identified tissue-specific regulatory circuits formed by HNF1alpha, HNF4alpha, and HNF6 with other transcription factors, revealing how these factors function as master regulators of hepatocyte and islet transcription.
1125 14988562 To gain insight into this circuitry, we used chromatin immunoprecipitation combined with promoter microarrays to identify systematically the genes occupied by the transcriptional regulators HNF1alpha, HNF4alpha, and HNF6, together with RNA polymerase II, in human liver and pancreatic islets.
1126 14988562 We identified tissue-specific regulatory circuits formed by HNF1alpha, HNF4alpha, and HNF6 with other transcription factors, revealing how these factors function as master regulators of hepatocyte and islet transcription.
1127 15016234 To date, five molecular causes of classic MODY have been identified: hepatocyte nuclear factor-4 alpha (HNF-4 alpha; MODY1), glucokinase (MODY2), hepatocyte nuclear factor-1 alpha (HNF-1 alpha; MODY3), insulin promoter factor-1 (IPF-1, MODY4), and hepatocyte nuclear factor-1 beta (HNF-1 beta; MODY5).
1128 15077723 They regulate the activity or nuclear abundance of several transcription factors, including PPAR, LXR, HNF-4, NFkappaB, and SREBP.
1129 15107844 PGC-1 promotes insulin resistance in liver through PPAR-alpha-dependent induction of TRB-3.
1130 15107844 The nuclear hormone receptor coactivator PGC-1 (peroxisome proliferator-activated (PPAR)-gamma coactivator-1) has been implicated in the onset of type 2 diabetes.
1131 15107844 Hepatic PGC-1 expression is elevated in mouse models of this disease, where it promotes constitutive activation of gluconeogenesis and fatty acid oxidation through its association with the nuclear hormone receptors HNF-4 and PPAR-alpha, respectively.
1132 15107844 Hepatic insulin sensitivity was enhanced in PGC-1-deficient mice, reflecting in part the reduced expression of the mammalian tribbles homolog TRB-3, a fasting-inducible inhibitor of the serine-threonine kinase Akt/PKB (ref. 6).
1133 15107844 We show here that, in the liver, TRB-3 is a target for PPAR-alpha.
1134 15107844 Knockdown of hepatic TRB-3 expression improved glucose tolerance, whereas hepatic overexpression of TRB-3 reversed the insulin-sensitive phenotype of PGC-1-deficient mice.
1135 15107844 These results indicate a link between nuclear hormone receptor and insulin signaling pathways, and suggest a potential role for TRB-3 inhibitors in the treatment of type 2 diabetes.
1136 15142986 Selective deletion of the Hnf1beta (MODY5) gene in beta-cells leads to altered gene expression and defective insulin release.
1137 15142986 Hepatocyte nuclear factor 1alpha (HNF1alpha) and HNF1beta (or vHNF1) are closely related transcription factors expressed in liver, kidney, gut, and pancreatic beta-cells.
1138 15142986 Human mutations in HNF1alpha or HNF1beta lead to maturity-onset diabetes of the young (MODY3 and MODY5, respectively), and patients present with impaired glucose-stimulated insulin secretion.
1139 15142986 To examine the role of HNF1beta in glucose homeostasis, viable mice deleted for HNF1beta selectively in beta-cells (beta/H1beta-KO mice) were generated using a Cre-LoxP strategy. beta/H1beta-KO mice had normal growth, fertility, fed or fasted plasma glucose and insulin levels, pancreatic insulin content, and insulin sensitivity.
1140 15142986 Moreover, beta/H1beta-KO islets had increased HNF1alpha and Pdx-1, decreased HNF4 mRNA levels, and reduced glucose-stimulated insulin release.
1141 15216446 We have screened the GCK gene and HNF-1alpha gene by direct sequencing in three German families with early onset type-2-diabetes, possibly MODY.
1142 15233628 Mutations in the HNF4alpha gene correlate with MODY1 (maturity-onset diabetes of the young 1), a form of type II diabetes characterized by an impaired glucose-induced insulin secretion.
1143 15233628 Conversely, in pancreatic beta-cell lines, this mutation resulted in strong impairments of HNF4alpha transcriptional activity on the promoters of LPK (liver pyruvate kinase) and HNF1alpha, with this transcription factor playing a key role in endocrine pancreas.
1144 15233628 Mutations in the HNF4alpha gene correlate with MODY1 (maturity-onset diabetes of the young 1), a form of type II diabetes characterized by an impaired glucose-induced insulin secretion.
1145 15233628 Conversely, in pancreatic beta-cell lines, this mutation resulted in strong impairments of HNF4alpha transcriptional activity on the promoters of LPK (liver pyruvate kinase) and HNF1alpha, with this transcription factor playing a key role in endocrine pancreas.
1146 15281001 The abnormal glucose-stimulated insulin secretion in MODY1 subjects may be due to reduced glucose transport and glycolysis.
1147 15281001 We recruited a Philippino family with autosomal dominant early-onset type 2 diabetes and screened the proband for mutations in the genes for HNF-1alpha, GCK, HNF-4alpha, IPF-1, HNF-6, and NGN3.
1148 15281001 The abnormal glucose-stimulated insulin secretion in MODY1 subjects may be due to reduced glucose transport and glycolysis.
1149 15281001 We recruited a Philippino family with autosomal dominant early-onset type 2 diabetes and screened the proband for mutations in the genes for HNF-1alpha, GCK, HNF-4alpha, IPF-1, HNF-6, and NGN3.
1150 15388792 A distal region involving hepatocyte nuclear factor 4alpha and CAAT/enhancer binding protein markedly potentiates the protein kinase A stimulation of the glucose-6-phosphatase promoter.
1151 15388792 Using different molecular approaches, we demonstrate that hepatocyte nuclear factor (HNF4alpha), CAAT/enhancer-binding protein-alpha (C/EBPalpha), C/EBPbeta, and cAMP response element-binding protein (CREB) are involved in the potentiated PKA responsiveness: in the distal region, via one HNF4alpha- and one C/EBP-binding sites, and in the proximal region, via two HNF4alpha and two CREB-binding sites.
1152 15388792 We also show that HNF4alpha, C/EBPalpha, and C/EBPbeta are constitutively bound to the endogenous Glc6Pase gene, whereas CREB and CREB-binding protein (CBP) will be bound to the gene upon stimulation by cAMP.
1153 15388792 These data strongly suggest that the cAMP responsiveness of the Glc6Pase promoter requires a tight cooperation between a proximal and a distal region, which depends on the presence of several HNF4alpha-, C/EBP-, and CREB-binding sites, therefore involving an intricate association of hepatic and ubiquitous transcription factors.
1154 15388792 A distal region involving hepatocyte nuclear factor 4alpha and CAAT/enhancer binding protein markedly potentiates the protein kinase A stimulation of the glucose-6-phosphatase promoter.
1155 15388792 Using different molecular approaches, we demonstrate that hepatocyte nuclear factor (HNF4alpha), CAAT/enhancer-binding protein-alpha (C/EBPalpha), C/EBPbeta, and cAMP response element-binding protein (CREB) are involved in the potentiated PKA responsiveness: in the distal region, via one HNF4alpha- and one C/EBP-binding sites, and in the proximal region, via two HNF4alpha and two CREB-binding sites.
1156 15388792 We also show that HNF4alpha, C/EBPalpha, and C/EBPbeta are constitutively bound to the endogenous Glc6Pase gene, whereas CREB and CREB-binding protein (CBP) will be bound to the gene upon stimulation by cAMP.
1157 15388792 These data strongly suggest that the cAMP responsiveness of the Glc6Pase promoter requires a tight cooperation between a proximal and a distal region, which depends on the presence of several HNF4alpha-, C/EBP-, and CREB-binding sites, therefore involving an intricate association of hepatic and ubiquitous transcription factors.
1158 15388792 A distal region involving hepatocyte nuclear factor 4alpha and CAAT/enhancer binding protein markedly potentiates the protein kinase A stimulation of the glucose-6-phosphatase promoter.
1159 15388792 Using different molecular approaches, we demonstrate that hepatocyte nuclear factor (HNF4alpha), CAAT/enhancer-binding protein-alpha (C/EBPalpha), C/EBPbeta, and cAMP response element-binding protein (CREB) are involved in the potentiated PKA responsiveness: in the distal region, via one HNF4alpha- and one C/EBP-binding sites, and in the proximal region, via two HNF4alpha and two CREB-binding sites.
1160 15388792 We also show that HNF4alpha, C/EBPalpha, and C/EBPbeta are constitutively bound to the endogenous Glc6Pase gene, whereas CREB and CREB-binding protein (CBP) will be bound to the gene upon stimulation by cAMP.
1161 15388792 These data strongly suggest that the cAMP responsiveness of the Glc6Pase promoter requires a tight cooperation between a proximal and a distal region, which depends on the presence of several HNF4alpha-, C/EBP-, and CREB-binding sites, therefore involving an intricate association of hepatic and ubiquitous transcription factors.
1162 15497766 The role of transcription factors such as SREBP1c and nuclear receptors such as PPAR-alpha, HNF-4alpha, and LXRalpha in mediating the nuclear effects of PUFAs are addressed.
1163 15520459 Pattern of genes influenced by conditional expression of the transcription factors HNF6, HNF4alpha and HNF1beta in a pancreatic beta-cell line.
1164 15520459 Using a clone expressing the HNF6, HNF4alpha and HNF1beta transcription factors at a limited level, we introduced the expression vectors encoding these factors.
1165 15520459 Pattern of genes influenced by conditional expression of the transcription factors HNF6, HNF4alpha and HNF1beta in a pancreatic beta-cell line.
1166 15520459 Using a clone expressing the HNF6, HNF4alpha and HNF1beta transcription factors at a limited level, we introduced the expression vectors encoding these factors.
1167 15522234 Effect of mutations in HNF-1alpha and HNF-1beta on the transcriptional regulation of human sucrase-isomaltase in Caco-2 cells.
1168 15522234 Mutations in transcription factors hepatocyte nuclear factors (HNF)-1alpha and HNF-1beta cause maturity-onset diabetes of the young (MODY) types 3 and 5, respectively.
1169 15522234 HNF-1alpha and HNF-1beta mutations are well studied in some tissues, but the mechanism by which HNF-1alpha and HNF-1beta mutations affect sucrase-isomaltase (SI) transcription in the small intestine is unclear.
1170 15522234 We studied the effects of 13 HNF-1alpha mutants and 2 HNF-1beta mutants on human SI gene transcription, which were identified in subjects with MODY3 and MODY5, respectively.
1171 15522234 Transactivation activity of 11 HNF-1alpha and 2 HNF-1beta mutants was significantly lower than that of wild (wt)-HNF-1alpha and wt-HNF-1beta.
1172 15522234 These results suggest that SI transcription might tend to be unchanged or lower in MODY3, while occurring more in MODY5.
1173 15585742 RT-PCR analysis showed that Pdx1-positive cells from day 8 cultures expressed the early endoderm markers Ptf1a, Foxa2, Hnf4alpha, Hnf1beta, and Hnf6, consistent with the notion that they corresponded to the early pancreatic endoderm present in the embryonic day 9.5 mouse embryo.
1174 15591035 Transcriptional regulation of glucose-6-phosphatase catalytic subunit promoter by insulin and glucose in the carnivorous fish, Sparus aurata.
1175 15591035 Increase in glucose-6-phosphatase catalytic subunit (G6Pase, G6pc) transcription enhances hepatic glucose production in non-insulin-dependent diabetes mellitus (NIDDM).
1176 15591035 Transfection experiments in HepG2 cells showed that insulin repressed S. aurata G6pc under high-glucose conditions.
1177 15591035 Synergistic activation of piscine G6pc promoter was induced by cotransfection with expression plasmids for hepatocyte nuclear factor-4alpha (HNF-4alpha) and peroxisome proliferator-activated receptor-gamma coactivator-1 (PGC-1alpha).
1178 15591035 No direct relationship was found between PGC-1alpha coactivation of HNF-4alpha transactivation and the repressive effect of insulin.
1179 15591035 Interestingly, insulin hardly affected G6pc promoter activity in the absence of glucose, suggesting that a reduced capacity of insulin-dependent repression of piscine G6pc may lead to insulin resistance in carnivorous fish.
1180 15591035 Transcriptional regulation of glucose-6-phosphatase catalytic subunit promoter by insulin and glucose in the carnivorous fish, Sparus aurata.
1181 15591035 Increase in glucose-6-phosphatase catalytic subunit (G6Pase, G6pc) transcription enhances hepatic glucose production in non-insulin-dependent diabetes mellitus (NIDDM).
1182 15591035 Transfection experiments in HepG2 cells showed that insulin repressed S. aurata G6pc under high-glucose conditions.
1183 15591035 Synergistic activation of piscine G6pc promoter was induced by cotransfection with expression plasmids for hepatocyte nuclear factor-4alpha (HNF-4alpha) and peroxisome proliferator-activated receptor-gamma coactivator-1 (PGC-1alpha).
1184 15591035 No direct relationship was found between PGC-1alpha coactivation of HNF-4alpha transactivation and the repressive effect of insulin.
1185 15591035 Interestingly, insulin hardly affected G6pc promoter activity in the absence of glucose, suggesting that a reduced capacity of insulin-dependent repression of piscine G6pc may lead to insulin resistance in carnivorous fish.
1186 15649097 By far MODY2 (due to mutations of the glucokinase gene) and MODY3 (due to mutations in hepatocyte nuclear factor-1alpha) are the most frequent.
1187 15649097 As with MODY3, all the other MODY subtypes are associated with mutations in transcription factors.
1188 15649097 The clinical presentations of the different MODY subtypes differ, particularly in the severity and the course of the insulin secretion defect, the risk of microvascular complications of diabetes, and the defects associated with diabetes.
1189 15649097 Despite the progression of insulin defects, sensitivity to sulfonylureas may be retained in MODY3 patients.
1190 15649097 By far MODY2 (due to mutations of the glucokinase gene) and MODY3 (due to mutations in hepatocyte nuclear factor-1alpha) are the most frequent.
1191 15649097 As with MODY3, all the other MODY subtypes are associated with mutations in transcription factors.
1192 15649097 The clinical presentations of the different MODY subtypes differ, particularly in the severity and the course of the insulin secretion defect, the risk of microvascular complications of diabetes, and the defects associated with diabetes.
1193 15649097 Despite the progression of insulin defects, sensitivity to sulfonylureas may be retained in MODY3 patients.
1194 15649945 The seminal observation of an ovarian carcinoma in a MODY5 patient who subsequently developed a chromophobe renal cell carcinoma, prompted us to screen for HNF1beta and HNF1alpha inactivation in a series of 20 ovarian and 35 renal neoplasms.
1195 15649945 In these cases, the expression of PKHD1 (polycystic kidney and hepatic disease 1) and UMOD (Uromodulin), two genes regulated by HNF1beta, was turned off.
1196 15649945 We identified two related clusters of co-regulated genes associating HNF1beta, PKHD1 and UMOD in the first group and HNF1alpha, HNF4alpha, FABP1 and UGT2B7 in the second group.
1197 15649945 Finally, these results suggest that germline mutations of HNF1beta and HNF1alpha may predispose to renal tumors.
1198 15649945 Furthermore, we suggest that HNF1beta functions as a tumor suppressor gene in chromophobe renal cell carcinogenesis through a PKHD1 expression control.
1199 15651981 Deletion and chromatin immunoprecipitation analysis indicated that negative autoregulation by HNF-4alpha1 was mediated by its association with the TATA-less HNF-4alpha core promoter enriched in Sp1, but lacking DR-1 response elements.
1200 15651981 Also, negative autoregulation by HNF-4alpha1 was independent of its transactivation function, being similarly exerted by transcriptional-defective MODY-1 missense mutants of HNF-4alpha1, or under conditions of suppressing or enhancing HNF-4alpha activity by small heterodimer partner or by inhibiting histone deacetylase respectively.
1201 15651981 Deletion and chromatin immunoprecipitation analysis indicated that negative autoregulation by HNF-4alpha1 was mediated by its association with the TATA-less HNF-4alpha core promoter enriched in Sp1, but lacking DR-1 response elements.
1202 15651981 Also, negative autoregulation by HNF-4alpha1 was independent of its transactivation function, being similarly exerted by transcriptional-defective MODY-1 missense mutants of HNF-4alpha1, or under conditions of suppressing or enhancing HNF-4alpha activity by small heterodimer partner or by inhibiting histone deacetylase respectively.
1203 15657605 In Caucasians, maturity-onset diabetes of the young (MODY) is mostly caused by mutations in the hepatocyte nuclear factor (HNF)-1alpha (MODY3) and glucokinase (MODY2) genes.
1204 15657605 We screened for mutations in the HNF-4alpha (MODY1), MODY2 and MODY3 genes by direct sequencing.
1205 15657605 Insulin resistance index and other clinical data were compared in sex-, age- and duration-matched MODY3 and MODYX patients.
1206 15657605 Compared to MODY3 patients, MODYX patients had higher body mass index (P<0.02), higher insulin resistance index (P=0.001) and triglyceride level (P<0.02), lower HDL level (P=0.001) and more hypertension (P<0.05), but no significant difference in the prevalence of diabetic complications.
1207 15657605 In conclusion, MODY3 and MODY2 account for only 9 and 1%, respectively, of Chinese MODY.
1208 15657605 A majority of Chinese MODY patients are due to defects in unknown genes and appear to be characterized by insulin resistance.
1209 15657605 In Caucasians, maturity-onset diabetes of the young (MODY) is mostly caused by mutations in the hepatocyte nuclear factor (HNF)-1alpha (MODY3) and glucokinase (MODY2) genes.
1210 15657605 We screened for mutations in the HNF-4alpha (MODY1), MODY2 and MODY3 genes by direct sequencing.
1211 15657605 Insulin resistance index and other clinical data were compared in sex-, age- and duration-matched MODY3 and MODYX patients.
1212 15657605 Compared to MODY3 patients, MODYX patients had higher body mass index (P<0.02), higher insulin resistance index (P=0.001) and triglyceride level (P<0.02), lower HDL level (P=0.001) and more hypertension (P<0.05), but no significant difference in the prevalence of diabetic complications.
1213 15657605 In conclusion, MODY3 and MODY2 account for only 9 and 1%, respectively, of Chinese MODY.
1214 15657605 A majority of Chinese MODY patients are due to defects in unknown genes and appear to be characterized by insulin resistance.
1215 15657605 In Caucasians, maturity-onset diabetes of the young (MODY) is mostly caused by mutations in the hepatocyte nuclear factor (HNF)-1alpha (MODY3) and glucokinase (MODY2) genes.
1216 15657605 We screened for mutations in the HNF-4alpha (MODY1), MODY2 and MODY3 genes by direct sequencing.
1217 15657605 Insulin resistance index and other clinical data were compared in sex-, age- and duration-matched MODY3 and MODYX patients.
1218 15657605 Compared to MODY3 patients, MODYX patients had higher body mass index (P<0.02), higher insulin resistance index (P=0.001) and triglyceride level (P<0.02), lower HDL level (P=0.001) and more hypertension (P<0.05), but no significant difference in the prevalence of diabetic complications.
1219 15657605 In conclusion, MODY3 and MODY2 account for only 9 and 1%, respectively, of Chinese MODY.
1220 15657605 A majority of Chinese MODY patients are due to defects in unknown genes and appear to be characterized by insulin resistance.
1221 15657605 In Caucasians, maturity-onset diabetes of the young (MODY) is mostly caused by mutations in the hepatocyte nuclear factor (HNF)-1alpha (MODY3) and glucokinase (MODY2) genes.
1222 15657605 We screened for mutations in the HNF-4alpha (MODY1), MODY2 and MODY3 genes by direct sequencing.
1223 15657605 Insulin resistance index and other clinical data were compared in sex-, age- and duration-matched MODY3 and MODYX patients.
1224 15657605 Compared to MODY3 patients, MODYX patients had higher body mass index (P<0.02), higher insulin resistance index (P=0.001) and triglyceride level (P<0.02), lower HDL level (P=0.001) and more hypertension (P<0.05), but no significant difference in the prevalence of diabetic complications.
1225 15657605 In conclusion, MODY3 and MODY2 account for only 9 and 1%, respectively, of Chinese MODY.
1226 15657605 A majority of Chinese MODY patients are due to defects in unknown genes and appear to be characterized by insulin resistance.
1227 15711583 In mammals, one of the most characterized examples of regulation of metabolic pathways by transcriptional coactivators is peroxisome proliferator-activated receptors gamma (PPARgamma) coactivator-1 alpha (PGC-1alpha).
1228 15711583 These transcription factors can be ubiquitous such as the nuclear respiratory factors or tissue-enriched factors such as PPARgamma (brown fat), hepatocyte nuclear factor (HNF4alpha) (liver and pancreas) and muscle enhancer factor (MEF2s).
1229 15711641 Complementary roles of IRS-1 and IRS-2 in the hepatic regulation of metabolism.
1230 15711641 In many cases, insulin resistance in liver is associated with reduced expression of both major insulin receptor substrate (IRS) proteins, IRS-1 and IRS-2.
1231 15711641 To investigate the specific functions of IRS-1 and IRS-2 in regulating liver function in vivo, we developed an adenovirus-mediated RNA interference technique in which short hairpin RNAs (shRNAs) are used to knock down IRS-1, IRS-2, or both, by 70-80% in livers of WT mice.
1232 15711641 The knockdown of IRS-1 resulted in an upregulation of the gluconeogenic enzymes glucose-6 phosphatase and phosphoenolpyruvate carboxykinase, as well as a marked increase in hepatic nuclear factor-4 alpha.
1233 15711641 Decreased IRS-1 was also associated with a decrease in glucokinase expression and a trend toward increased blood glucose, whereas knockdown of IRS-2 resulted in the upregulation of lipogenic enzymes SREBP-1c and fatty acid synthase, as well as increased hepatic lipid accumulation.
1234 15711641 The concomitant injection of IRS-1 and IRS-2 adenoviral shRNAs resulted in systemic insulin resistance, glucose intolerance, and hepatic steatosis.
1235 15711641 Taken together, our results demonstrate that hepatic IRS-1 and IRS-2 have complementary roles in the control of hepatic metabolism, with IRS-1 more closely linked to glucose homeostasis and IRS-2 more closely linked to lipid metabolism.
1236 15715885 Monogenic forms of diabetes (maturity-onset diabetes of the young, MODY) have been identified and classified into MODY1-6 according to the mutated genes that by being expressed in the pancreatic beta-cells confirm at the molecular level the clinical presentation of MODY as a predominantly insulin secretory deficient form of diabetes mellitus.
1237 15715885 Mutation analyses of selected 'candidate' susceptibility genes in various populations have also identified the widespread Pro12Ala variant of the peroxisome proliferator-activated receptor-gamma and the common Glu23Lys variant of the ATP-sensitive potassium channel, Kir6.2 (KCNJ11).
1238 15719061 Mammalian nuclear hormone receptors (NHRs), such as liver X receptor, farnesoid X receptor, and peroxisome proliferator-activated receptors (PPARs), precisely control energy metabolism.
1239 15719061 Despite its sequence relationship with the mammalian hepatocyte nuclear factor 4 receptor, the biological activities of nhr-49 were most similar to those of the mammalian PPARs, implying an evolutionarily conserved role for NHRs in modulating fat consumption and composition.
1240 15728204 HNF4A encodes an orphan nuclear receptor that plays crucial roles in regulating hepatic gluconeogenesis and insulin secretion.
1241 15752752 Mutations in the hepatocyte nuclear factor (HNF) 4alpha gene cause a form of maturity-onset diabetes of the young (MODY1), which is a monogenic form of type 2 diabetes characterized by impaired insulin secretion by pancreatic beta-cells.
1242 15754742 In addition to MODY, IPF-1 mutations are suggested to predispose to common late-onset T2DM with different penetration of the mutations reflected in their in vitro activity.
1243 15761495 The MODY1 gene HNF-4alpha regulates selected genes involved in insulin secretion.
1244 15761495 These phenotypes can be explained in part by a 60% reduction in expression of the potassium channel subunit Kir6.2.
1245 15761495 We demonstrate using cotransfection assays that the Kir6.2 gene is a transcriptional target of HNF-4alpha.
1246 15761495 Our data provide genetic evidence that HNF-4alpha is required in the pancreatic beta cell for regulation of the pathway of insulin secretion dependent on the ATP-dependent potassium channel.
1247 15761495 The MODY1 gene HNF-4alpha regulates selected genes involved in insulin secretion.
1248 15761495 These phenotypes can be explained in part by a 60% reduction in expression of the potassium channel subunit Kir6.2.
1249 15761495 We demonstrate using cotransfection assays that the Kir6.2 gene is a transcriptional target of HNF-4alpha.
1250 15761495 Our data provide genetic evidence that HNF-4alpha is required in the pancreatic beta cell for regulation of the pathway of insulin secretion dependent on the ATP-dependent potassium channel.
1251 15761495 The MODY1 gene HNF-4alpha regulates selected genes involved in insulin secretion.
1252 15761495 These phenotypes can be explained in part by a 60% reduction in expression of the potassium channel subunit Kir6.2.
1253 15761495 We demonstrate using cotransfection assays that the Kir6.2 gene is a transcriptional target of HNF-4alpha.
1254 15761495 Our data provide genetic evidence that HNF-4alpha is required in the pancreatic beta cell for regulation of the pathway of insulin secretion dependent on the ATP-dependent potassium channel.
1255 15841481 Identification of novel GCK and HNF1A/TCF1 mutations and polymorphisms in German families with maturity-onset diabetes of the young (MODY).
1256 15841481 Forty families with a clinical presentation suggestive of MODY were screened for the most common MODY subtypes caused by mutations in the genes encoding glucokinase (GCK, MODY2) and hepatocyte nuclear 1-alpha (HNF1A/TCF1, MODY3).
1257 15841481 Identification of novel GCK and HNF1A/TCF1 mutations and polymorphisms in German families with maturity-onset diabetes of the young (MODY).
1258 15841481 Forty families with a clinical presentation suggestive of MODY were screened for the most common MODY subtypes caused by mutations in the genes encoding glucokinase (GCK, MODY2) and hepatocyte nuclear 1-alpha (HNF1A/TCF1, MODY3).
1259 15928245 Half of clinically defined maturity-onset diabetes of the young patients in Denmark do not have mutations in HNF4A, GCK, and TCF1.
1260 15955117 MODY is a group of six different forms of monogenic diabetes, characterized by insulin secretion defects in pancreatic beta-cells, supposed to be responsible for 2-5% of all cases of diabetes.
1261 15955369 The majority of proteins associated with MODY are transcription factors, such as hepatocyte nuclear factor 4alpha (HNF-4alpha), HNF-1alpha, insulin promoter factor-1 (IPF-1), HNF-1beta, and NEUROD1.
1262 15955369 In addition, some evidence exists that genes, such as adiponectin, IRS-1, and some others may also influence the susceptibility to T2DM.
1263 15967803 Cloning of the rat pyruvate dehydrogenase kinase 4 gene promoter: activation of pyruvate dehydrogenase kinase 4 by the peroxisome proliferator-activated receptor gamma coactivator.
1264 15967803 The pyruvate dehydrogenase complex catalyzes the conversion of pyruvate to acetyl-CoA in mitochondria and is a key regulatory enzyme in the metabolism of glucose to acetyl-CoA.
1265 15967803 Phosphorylation of pyruvate dehydrogenase by the pyruvate dehydrogenase kinases (PDK) inhibits pyruvate dehydrogenase complex activity.
1266 15967803 There are four PDK isoforms, and expression of PDK4 and PDK2 genes is elevated in starvation and diabetes, allowing glucose to be conserved while fatty acid oxidation is increased.
1267 15967803 The peroxisome proliferator-activated receptor gamma coactivator (PGC-1alpha) stimulates the expression of genes involved in hepatic gluconeogenesis and mitochondrial fatty acid oxidation.
1268 15967803 We have found that PGC-1alpha will induce the expression of both the PDK2 and PDK4 genes in primary rat hepatocytes and ventricular myocytes.
1269 15967803 Hepatic nuclear factor 4 (HNF4), which activates many genes in the liver, will induce PDK4 expression.
1270 15967803 Although HNF4 and PGC-1alpha interact to stimulate several genes encoding gluconeogenic enzymes, the induction of PDK4 does not involve interactions of PGC-1alpha with HNF4.
1271 15967803 Using the chromatin immunoprecipitation assay, we have demonstrated that HNF4 and PGC-1alpha are associated with the PDK4 gene in vivo.
1272 15967803 Cloning of the rat pyruvate dehydrogenase kinase 4 gene promoter: activation of pyruvate dehydrogenase kinase 4 by the peroxisome proliferator-activated receptor gamma coactivator.
1273 15967803 The pyruvate dehydrogenase complex catalyzes the conversion of pyruvate to acetyl-CoA in mitochondria and is a key regulatory enzyme in the metabolism of glucose to acetyl-CoA.
1274 15967803 Phosphorylation of pyruvate dehydrogenase by the pyruvate dehydrogenase kinases (PDK) inhibits pyruvate dehydrogenase complex activity.
1275 15967803 There are four PDK isoforms, and expression of PDK4 and PDK2 genes is elevated in starvation and diabetes, allowing glucose to be conserved while fatty acid oxidation is increased.
1276 15967803 The peroxisome proliferator-activated receptor gamma coactivator (PGC-1alpha) stimulates the expression of genes involved in hepatic gluconeogenesis and mitochondrial fatty acid oxidation.
1277 15967803 We have found that PGC-1alpha will induce the expression of both the PDK2 and PDK4 genes in primary rat hepatocytes and ventricular myocytes.
1278 15967803 Hepatic nuclear factor 4 (HNF4), which activates many genes in the liver, will induce PDK4 expression.
1279 15967803 Although HNF4 and PGC-1alpha interact to stimulate several genes encoding gluconeogenic enzymes, the induction of PDK4 does not involve interactions of PGC-1alpha with HNF4.
1280 15967803 Using the chromatin immunoprecipitation assay, we have demonstrated that HNF4 and PGC-1alpha are associated with the PDK4 gene in vivo.
1281 15967803 Cloning of the rat pyruvate dehydrogenase kinase 4 gene promoter: activation of pyruvate dehydrogenase kinase 4 by the peroxisome proliferator-activated receptor gamma coactivator.
1282 15967803 The pyruvate dehydrogenase complex catalyzes the conversion of pyruvate to acetyl-CoA in mitochondria and is a key regulatory enzyme in the metabolism of glucose to acetyl-CoA.
1283 15967803 Phosphorylation of pyruvate dehydrogenase by the pyruvate dehydrogenase kinases (PDK) inhibits pyruvate dehydrogenase complex activity.
1284 15967803 There are four PDK isoforms, and expression of PDK4 and PDK2 genes is elevated in starvation and diabetes, allowing glucose to be conserved while fatty acid oxidation is increased.
1285 15967803 The peroxisome proliferator-activated receptor gamma coactivator (PGC-1alpha) stimulates the expression of genes involved in hepatic gluconeogenesis and mitochondrial fatty acid oxidation.
1286 15967803 We have found that PGC-1alpha will induce the expression of both the PDK2 and PDK4 genes in primary rat hepatocytes and ventricular myocytes.
1287 15967803 Hepatic nuclear factor 4 (HNF4), which activates many genes in the liver, will induce PDK4 expression.
1288 15967803 Although HNF4 and PGC-1alpha interact to stimulate several genes encoding gluconeogenic enzymes, the induction of PDK4 does not involve interactions of PGC-1alpha with HNF4.
1289 15967803 Using the chromatin immunoprecipitation assay, we have demonstrated that HNF4 and PGC-1alpha are associated with the PDK4 gene in vivo.
1290 15983230 The aim of this study was to investigate whether single nucleotide polymorphisms (SNPs) in the genes regulating insulin secretion (SLC2A2 [encoding GLUT2], GCK, TCF1 [encoding HNF-1alpha], HNF4A, GIP, and GLP1R) are associated with the conversion from impaired glucose tolerance (IGT) to type 2 diabetes in participants of the Finnish Diabetes Prevention Study.
1291 16035308 Six genetic mutations have been described, one of them affecting the glucokinase gene (MODY 2) and the others various transcription factors HNF-1alpha, HNF-4alpha, HNF-1beta, IPF-1 and NeuroD (MODY 1,3,4,5,6, respectively).
1292 16035308 Among the two most frequent forms, MODY 2 (mutation of the glucokinase gene) has a benign clinical evolution whereas MODY 3 (mutation of HNF-1alpha gene) has a much more severe evolution.
1293 16035391 The hepatic nuclear factor 4alpha (HNF4alpha) gene partly explains the linkage peak on chromosome 20, while the upstream transcription factor (USF1) is associated with familial combined hyperlipidaemia (FCHL) and maps close to the type 2 diabetes associated 1q peak.
1294 16035391 Many genes accounting for monogenic forms of diabetes have been identified--such as maturity onset diabetes of the young (MODY); glucokinase (GCK) and HNF1alpha mutations being the most common causes of MODY.
1295 16035391 GCK variants result in 'mild' diabetes or impaired glucose tolerance (IGT) and relatively few cardiovascular complications, while HNF1alpha-associated MODY is more typical of type 2 diabetes, frequently being treated with sulphonylureas or insulin and resulting in microvascular complications.
1296 16059790 Genetic testing for glucokinase mutations in clinically selected patients with MODY: a worthwhile investment.
1297 16059790 The most common subtypes are caused by mutations in the genes encoding the transcription factor HNF-1a (MODY 3) and the glycolytic enzyme glucokinase (GCK) (MODY 2).
1298 16059790 The five-year-old girl was started on insulin therapy for her diabetes but because her HbA1c remained between 5.8-6.4% (reference 4.1-5.7%) and her clinical presentation suggested MODY insulin was discontinued.
1299 16059790 Genetic testing for glucokinase mutations in clinically selected patients with MODY: a worthwhile investment.
1300 16059790 The most common subtypes are caused by mutations in the genes encoding the transcription factor HNF-1a (MODY 3) and the glycolytic enzyme glucokinase (GCK) (MODY 2).
1301 16059790 The five-year-old girl was started on insulin therapy for her diabetes but because her HbA1c remained between 5.8-6.4% (reference 4.1-5.7%) and her clinical presentation suggested MODY insulin was discontinued.
1302 16059790 Genetic testing for glucokinase mutations in clinically selected patients with MODY: a worthwhile investment.
1303 16059790 The most common subtypes are caused by mutations in the genes encoding the transcription factor HNF-1a (MODY 3) and the glycolytic enzyme glucokinase (GCK) (MODY 2).
1304 16059790 The five-year-old girl was started on insulin therapy for her diabetes but because her HbA1c remained between 5.8-6.4% (reference 4.1-5.7%) and her clinical presentation suggested MODY insulin was discontinued.
1305 16096055 Using oligonucleotide microarrays and real-time PCR of pancreatic islets isolated from humans with type 2 diabetes versus normal glucose-tolerant controls, we identified multiple changes in expression of genes known to be important in beta cell function, including major decreases in expression of HNF4alpha, insulin receptor, IRS2, Akt2, and several glucose-metabolic-pathway genes.
1306 16223942 Mechanisms of mutual functional interactions between HNF-4alpha and HNF-1alpha revealed by mutations that cause maturity onset diabetes of the young.
1307 16223942 HNF-4alpha and HNF-1alpha cooperatively activate genes with binding sites for both factors, whereas suppressive interactions occur at regulatory sequences with a binding site for only one factor.
1308 16223942 The liver fatty acid binding protein gene (Fabp1) has binding sites for both factors, and chromatin precipitation assays were utilized to demonstrate that HNF-4alpha increased HNF-1alpha Fabp1 promoter occupancy during cooperative transcriptional activation.
1309 16223942 The HNF4 P2 promoter contains a HNF-1 but not HNF-4 binding site, and HNF-4alpha suppressed HNF-1alpha HNF4 P2 activation and decreased promoter HNF-1alpha occupancy.
1310 16223942 The apolipoprotein C III (APOC3) promoter contains a HNF-4 but not HNF-1 binding site, and HNF-1alpha suppressed HNF-4alpha APOC3 activation and decreased HNF-4alpha promoter occupancy.
1311 16223942 Maturity onset diabetes of the young (MODY) as well as defects in hepatic lipid metabolism result from mutations in either HNF-4alpha or HNF-1alpha.
1312 16223942 We found that MODY missense mutant R127W HNF-4alpha retained wild-type individual Fabp1 activation and bound to HNF-1alpha better than wild-type HNF-4alpha, yet did not cooperate with HNF-1alpha or increase HNF-1alpha Fabp1 promoter occupancy.
1313 16223942 The HNF-1alpha R131Q MODY mutant also retained wild-type Fabp1 activation and bound to HNF-4alpha as well as the wild type but was defective in both suppressing HNF-4alpha APOC3 activation and decreasing HNF-4alpha promoter occupancy.
1314 16223942 Mechanisms of mutual functional interactions between HNF-4alpha and HNF-1alpha revealed by mutations that cause maturity onset diabetes of the young.
1315 16223942 HNF-4alpha and HNF-1alpha cooperatively activate genes with binding sites for both factors, whereas suppressive interactions occur at regulatory sequences with a binding site for only one factor.
1316 16223942 The liver fatty acid binding protein gene (Fabp1) has binding sites for both factors, and chromatin precipitation assays were utilized to demonstrate that HNF-4alpha increased HNF-1alpha Fabp1 promoter occupancy during cooperative transcriptional activation.
1317 16223942 The HNF4 P2 promoter contains a HNF-1 but not HNF-4 binding site, and HNF-4alpha suppressed HNF-1alpha HNF4 P2 activation and decreased promoter HNF-1alpha occupancy.
1318 16223942 The apolipoprotein C III (APOC3) promoter contains a HNF-4 but not HNF-1 binding site, and HNF-1alpha suppressed HNF-4alpha APOC3 activation and decreased HNF-4alpha promoter occupancy.
1319 16223942 Maturity onset diabetes of the young (MODY) as well as defects in hepatic lipid metabolism result from mutations in either HNF-4alpha or HNF-1alpha.
1320 16223942 We found that MODY missense mutant R127W HNF-4alpha retained wild-type individual Fabp1 activation and bound to HNF-1alpha better than wild-type HNF-4alpha, yet did not cooperate with HNF-1alpha or increase HNF-1alpha Fabp1 promoter occupancy.
1321 16223942 The HNF-1alpha R131Q MODY mutant also retained wild-type Fabp1 activation and bound to HNF-4alpha as well as the wild type but was defective in both suppressing HNF-4alpha APOC3 activation and decreasing HNF-4alpha promoter occupancy.
1322 16223942 Mechanisms of mutual functional interactions between HNF-4alpha and HNF-1alpha revealed by mutations that cause maturity onset diabetes of the young.
1323 16223942 HNF-4alpha and HNF-1alpha cooperatively activate genes with binding sites for both factors, whereas suppressive interactions occur at regulatory sequences with a binding site for only one factor.
1324 16223942 The liver fatty acid binding protein gene (Fabp1) has binding sites for both factors, and chromatin precipitation assays were utilized to demonstrate that HNF-4alpha increased HNF-1alpha Fabp1 promoter occupancy during cooperative transcriptional activation.
1325 16223942 The HNF4 P2 promoter contains a HNF-1 but not HNF-4 binding site, and HNF-4alpha suppressed HNF-1alpha HNF4 P2 activation and decreased promoter HNF-1alpha occupancy.
1326 16223942 The apolipoprotein C III (APOC3) promoter contains a HNF-4 but not HNF-1 binding site, and HNF-1alpha suppressed HNF-4alpha APOC3 activation and decreased HNF-4alpha promoter occupancy.
1327 16223942 Maturity onset diabetes of the young (MODY) as well as defects in hepatic lipid metabolism result from mutations in either HNF-4alpha or HNF-1alpha.
1328 16223942 We found that MODY missense mutant R127W HNF-4alpha retained wild-type individual Fabp1 activation and bound to HNF-1alpha better than wild-type HNF-4alpha, yet did not cooperate with HNF-1alpha or increase HNF-1alpha Fabp1 promoter occupancy.
1329 16223942 The HNF-1alpha R131Q MODY mutant also retained wild-type Fabp1 activation and bound to HNF-4alpha as well as the wild type but was defective in both suppressing HNF-4alpha APOC3 activation and decreasing HNF-4alpha promoter occupancy.
1330 16223942 Mechanisms of mutual functional interactions between HNF-4alpha and HNF-1alpha revealed by mutations that cause maturity onset diabetes of the young.
1331 16223942 HNF-4alpha and HNF-1alpha cooperatively activate genes with binding sites for both factors, whereas suppressive interactions occur at regulatory sequences with a binding site for only one factor.
1332 16223942 The liver fatty acid binding protein gene (Fabp1) has binding sites for both factors, and chromatin precipitation assays were utilized to demonstrate that HNF-4alpha increased HNF-1alpha Fabp1 promoter occupancy during cooperative transcriptional activation.
1333 16223942 The HNF4 P2 promoter contains a HNF-1 but not HNF-4 binding site, and HNF-4alpha suppressed HNF-1alpha HNF4 P2 activation and decreased promoter HNF-1alpha occupancy.
1334 16223942 The apolipoprotein C III (APOC3) promoter contains a HNF-4 but not HNF-1 binding site, and HNF-1alpha suppressed HNF-4alpha APOC3 activation and decreased HNF-4alpha promoter occupancy.
1335 16223942 Maturity onset diabetes of the young (MODY) as well as defects in hepatic lipid metabolism result from mutations in either HNF-4alpha or HNF-1alpha.
1336 16223942 We found that MODY missense mutant R127W HNF-4alpha retained wild-type individual Fabp1 activation and bound to HNF-1alpha better than wild-type HNF-4alpha, yet did not cooperate with HNF-1alpha or increase HNF-1alpha Fabp1 promoter occupancy.
1337 16223942 The HNF-1alpha R131Q MODY mutant also retained wild-type Fabp1 activation and bound to HNF-4alpha as well as the wild type but was defective in both suppressing HNF-4alpha APOC3 activation and decreasing HNF-4alpha promoter occupancy.
1338 16223942 Mechanisms of mutual functional interactions between HNF-4alpha and HNF-1alpha revealed by mutations that cause maturity onset diabetes of the young.
1339 16223942 HNF-4alpha and HNF-1alpha cooperatively activate genes with binding sites for both factors, whereas suppressive interactions occur at regulatory sequences with a binding site for only one factor.
1340 16223942 The liver fatty acid binding protein gene (Fabp1) has binding sites for both factors, and chromatin precipitation assays were utilized to demonstrate that HNF-4alpha increased HNF-1alpha Fabp1 promoter occupancy during cooperative transcriptional activation.
1341 16223942 The HNF4 P2 promoter contains a HNF-1 but not HNF-4 binding site, and HNF-4alpha suppressed HNF-1alpha HNF4 P2 activation and decreased promoter HNF-1alpha occupancy.
1342 16223942 The apolipoprotein C III (APOC3) promoter contains a HNF-4 but not HNF-1 binding site, and HNF-1alpha suppressed HNF-4alpha APOC3 activation and decreased HNF-4alpha promoter occupancy.
1343 16223942 Maturity onset diabetes of the young (MODY) as well as defects in hepatic lipid metabolism result from mutations in either HNF-4alpha or HNF-1alpha.
1344 16223942 We found that MODY missense mutant R127W HNF-4alpha retained wild-type individual Fabp1 activation and bound to HNF-1alpha better than wild-type HNF-4alpha, yet did not cooperate with HNF-1alpha or increase HNF-1alpha Fabp1 promoter occupancy.
1345 16223942 The HNF-1alpha R131Q MODY mutant also retained wild-type Fabp1 activation and bound to HNF-4alpha as well as the wild type but was defective in both suppressing HNF-4alpha APOC3 activation and decreasing HNF-4alpha promoter occupancy.
1346 16223942 Mechanisms of mutual functional interactions between HNF-4alpha and HNF-1alpha revealed by mutations that cause maturity onset diabetes of the young.
1347 16223942 HNF-4alpha and HNF-1alpha cooperatively activate genes with binding sites for both factors, whereas suppressive interactions occur at regulatory sequences with a binding site for only one factor.
1348 16223942 The liver fatty acid binding protein gene (Fabp1) has binding sites for both factors, and chromatin precipitation assays were utilized to demonstrate that HNF-4alpha increased HNF-1alpha Fabp1 promoter occupancy during cooperative transcriptional activation.
1349 16223942 The HNF4 P2 promoter contains a HNF-1 but not HNF-4 binding site, and HNF-4alpha suppressed HNF-1alpha HNF4 P2 activation and decreased promoter HNF-1alpha occupancy.
1350 16223942 The apolipoprotein C III (APOC3) promoter contains a HNF-4 but not HNF-1 binding site, and HNF-1alpha suppressed HNF-4alpha APOC3 activation and decreased HNF-4alpha promoter occupancy.
1351 16223942 Maturity onset diabetes of the young (MODY) as well as defects in hepatic lipid metabolism result from mutations in either HNF-4alpha or HNF-1alpha.
1352 16223942 We found that MODY missense mutant R127W HNF-4alpha retained wild-type individual Fabp1 activation and bound to HNF-1alpha better than wild-type HNF-4alpha, yet did not cooperate with HNF-1alpha or increase HNF-1alpha Fabp1 promoter occupancy.
1353 16223942 The HNF-1alpha R131Q MODY mutant also retained wild-type Fabp1 activation and bound to HNF-4alpha as well as the wild type but was defective in both suppressing HNF-4alpha APOC3 activation and decreasing HNF-4alpha promoter occupancy.
1354 16223942 Mechanisms of mutual functional interactions between HNF-4alpha and HNF-1alpha revealed by mutations that cause maturity onset diabetes of the young.
1355 16223942 HNF-4alpha and HNF-1alpha cooperatively activate genes with binding sites for both factors, whereas suppressive interactions occur at regulatory sequences with a binding site for only one factor.
1356 16223942 The liver fatty acid binding protein gene (Fabp1) has binding sites for both factors, and chromatin precipitation assays were utilized to demonstrate that HNF-4alpha increased HNF-1alpha Fabp1 promoter occupancy during cooperative transcriptional activation.
1357 16223942 The HNF4 P2 promoter contains a HNF-1 but not HNF-4 binding site, and HNF-4alpha suppressed HNF-1alpha HNF4 P2 activation and decreased promoter HNF-1alpha occupancy.
1358 16223942 The apolipoprotein C III (APOC3) promoter contains a HNF-4 but not HNF-1 binding site, and HNF-1alpha suppressed HNF-4alpha APOC3 activation and decreased HNF-4alpha promoter occupancy.
1359 16223942 Maturity onset diabetes of the young (MODY) as well as defects in hepatic lipid metabolism result from mutations in either HNF-4alpha or HNF-1alpha.
1360 16223942 We found that MODY missense mutant R127W HNF-4alpha retained wild-type individual Fabp1 activation and bound to HNF-1alpha better than wild-type HNF-4alpha, yet did not cooperate with HNF-1alpha or increase HNF-1alpha Fabp1 promoter occupancy.
1361 16223942 The HNF-1alpha R131Q MODY mutant also retained wild-type Fabp1 activation and bound to HNF-4alpha as well as the wild type but was defective in both suppressing HNF-4alpha APOC3 activation and decreasing HNF-4alpha promoter occupancy.
1362 16223942 Mechanisms of mutual functional interactions between HNF-4alpha and HNF-1alpha revealed by mutations that cause maturity onset diabetes of the young.
1363 16223942 HNF-4alpha and HNF-1alpha cooperatively activate genes with binding sites for both factors, whereas suppressive interactions occur at regulatory sequences with a binding site for only one factor.
1364 16223942 The liver fatty acid binding protein gene (Fabp1) has binding sites for both factors, and chromatin precipitation assays were utilized to demonstrate that HNF-4alpha increased HNF-1alpha Fabp1 promoter occupancy during cooperative transcriptional activation.
1365 16223942 The HNF4 P2 promoter contains a HNF-1 but not HNF-4 binding site, and HNF-4alpha suppressed HNF-1alpha HNF4 P2 activation and decreased promoter HNF-1alpha occupancy.
1366 16223942 The apolipoprotein C III (APOC3) promoter contains a HNF-4 but not HNF-1 binding site, and HNF-1alpha suppressed HNF-4alpha APOC3 activation and decreased HNF-4alpha promoter occupancy.
1367 16223942 Maturity onset diabetes of the young (MODY) as well as defects in hepatic lipid metabolism result from mutations in either HNF-4alpha or HNF-1alpha.
1368 16223942 We found that MODY missense mutant R127W HNF-4alpha retained wild-type individual Fabp1 activation and bound to HNF-1alpha better than wild-type HNF-4alpha, yet did not cooperate with HNF-1alpha or increase HNF-1alpha Fabp1 promoter occupancy.
1369 16223942 The HNF-1alpha R131Q MODY mutant also retained wild-type Fabp1 activation and bound to HNF-4alpha as well as the wild type but was defective in both suppressing HNF-4alpha APOC3 activation and decreasing HNF-4alpha promoter occupancy.
1370 16249435 Maturity-onset diabetes of the young (MODY) 5 is caused by mutations in the TCF2 gene encoding the transcription factor hepatocyte nuclear factor-1beta.
1371 16268330 Making a diagnosis of monogenic diabetes is important as it can have a dramatic effect on the treatment a patient should receive: glucokinase MODY patients need no treatment; HNF1alpha MODY patients are very sensitive to low dose sulphonylureas; and patients with neonatal diabetes due to Kir6.2 mutations, despite being insulin dependent, can discontinue insulin and be well controlled on high dose sulphonylurea tablets.
1372 16377800 Mutations in the hepatocyte nuclear factor (HNF)-4alpha gene cause a form of maturity-onset diabetes of the young (MODY1) that is characterized by impairment of glucose-stimulated insulin secretion by pancreatic beta-cells.
1373 16377800 The betaHNF-4alphaKO mice exhibited impairment of glucose-stimulated insulin secretion, which is a characteristic of MODY1.
1374 16377800 Pancreatic islet morphology, beta-cell mass, and insulin content were normal in the HNF-4alpha mutant mice.
1375 16377800 Expression levels of Kir6.2 and SUR1 proteins in the betaHNF-4alphaKO mice were unchanged as compared with control mice.
1376 16377800 Mutations in the hepatocyte nuclear factor (HNF)-4alpha gene cause a form of maturity-onset diabetes of the young (MODY1) that is characterized by impairment of glucose-stimulated insulin secretion by pancreatic beta-cells.
1377 16377800 The betaHNF-4alphaKO mice exhibited impairment of glucose-stimulated insulin secretion, which is a characteristic of MODY1.
1378 16377800 Pancreatic islet morphology, beta-cell mass, and insulin content were normal in the HNF-4alpha mutant mice.
1379 16377800 Expression levels of Kir6.2 and SUR1 proteins in the betaHNF-4alphaKO mice were unchanged as compared with control mice.
1380 16377800 Mutations in the hepatocyte nuclear factor (HNF)-4alpha gene cause a form of maturity-onset diabetes of the young (MODY1) that is characterized by impairment of glucose-stimulated insulin secretion by pancreatic beta-cells.
1381 16377800 The betaHNF-4alphaKO mice exhibited impairment of glucose-stimulated insulin secretion, which is a characteristic of MODY1.
1382 16377800 Pancreatic islet morphology, beta-cell mass, and insulin content were normal in the HNF-4alpha mutant mice.
1383 16377800 Expression levels of Kir6.2 and SUR1 proteins in the betaHNF-4alphaKO mice were unchanged as compared with control mice.
1384 16562587 We analyzed 84 Japanese patients with juvenile-onset (before 18 years of age) non-obese diabetes mellitus (DM) for mutations in the genes for HNF-1alpha, HNF-4alpha and HNF-1beta.
1385 16562587 No mutation was identified in the HNF-4alpha and HNF-1beta genes.
1386 16562587 We analyzed 84 Japanese patients with juvenile-onset (before 18 years of age) non-obese diabetes mellitus (DM) for mutations in the genes for HNF-1alpha, HNF-4alpha and HNF-1beta.
1387 16562587 No mutation was identified in the HNF-4alpha and HNF-1beta genes.
1388 16632067 Maturity-onset diabetes of the young (MODY) is mostly caused by mutations of the hepatocyte nuclear factor (HNF)-1alpha (MODY3) and glucokinase (MODY2) genes in Caucasians.
1389 16632067 The HNF-4alpha (MODY1), glucokinase (MODY2) and HNF-1alpha (MODY3) genes were analysed by direct sequencing.
1390 16632067 In conclusion, the mutations in the HNF-1alpha gene and GCK account for a small proportion, about 5% and 2.5%, respectively, in Korean MODY and early onset type 2 patients.
1391 16632067 Maturity-onset diabetes of the young (MODY) is mostly caused by mutations of the hepatocyte nuclear factor (HNF)-1alpha (MODY3) and glucokinase (MODY2) genes in Caucasians.
1392 16632067 The HNF-4alpha (MODY1), glucokinase (MODY2) and HNF-1alpha (MODY3) genes were analysed by direct sequencing.
1393 16632067 In conclusion, the mutations in the HNF-1alpha gene and GCK account for a small proportion, about 5% and 2.5%, respectively, in Korean MODY and early onset type 2 patients.
1394 16632067 Maturity-onset diabetes of the young (MODY) is mostly caused by mutations of the hepatocyte nuclear factor (HNF)-1alpha (MODY3) and glucokinase (MODY2) genes in Caucasians.
1395 16632067 The HNF-4alpha (MODY1), glucokinase (MODY2) and HNF-1alpha (MODY3) genes were analysed by direct sequencing.
1396 16632067 In conclusion, the mutations in the HNF-1alpha gene and GCK account for a small proportion, about 5% and 2.5%, respectively, in Korean MODY and early onset type 2 patients.
1397 16672224 Casein kinase 2 Is activated and essential for Wnt/beta-catenin signaling.
1398 16672224 Wnt/beta-catenin signaling is essential to early development.
1399 16672224 Activation of Frizzled-1 by Wnts induces nuclear accumulation of beta-catenin and activation of Lef/Tcf-dependent gene expression.
1400 16672224 Casein kinase 2 has been shown to affect Wnt/beta-catenin signaling.
1401 16672224 Herein we show to the contrary that casein kinase 2 activity is rapidly and transiently increased in response to Wnt3a stimulation and is essential for Wnt/beta-catenin signaling.
1402 16672224 Chemical inhibition of casein kinase 2 or suppression of its expression blocks Frizzled-1 activation of Lef/Tcf-sensitive gene expression.
1403 16672224 Expression of a constitutively active mutant of either Galpha(q) or Galpha(o) stimulates casein kinase 2 activation and Lef/Tcf-sensitive gene expression.
1404 16672224 Thus, casein kinase 2 is shown to be regulated by Wnt3a and essential to stimulation of the Frizzled-1/beta-catenin/Lef-Tcf pathway.
1405 16672224 Casein kinase 2 Is activated and essential for Wnt/beta-catenin signaling.
1406 16672224 Wnt/beta-catenin signaling is essential to early development.
1407 16672224 Activation of Frizzled-1 by Wnts induces nuclear accumulation of beta-catenin and activation of Lef/Tcf-dependent gene expression.
1408 16672224 Casein kinase 2 has been shown to affect Wnt/beta-catenin signaling.
1409 16672224 Herein we show to the contrary that casein kinase 2 activity is rapidly and transiently increased in response to Wnt3a stimulation and is essential for Wnt/beta-catenin signaling.
1410 16672224 Chemical inhibition of casein kinase 2 or suppression of its expression blocks Frizzled-1 activation of Lef/Tcf-sensitive gene expression.
1411 16672224 Expression of a constitutively active mutant of either Galpha(q) or Galpha(o) stimulates casein kinase 2 activation and Lef/Tcf-sensitive gene expression.
1412 16672224 Thus, casein kinase 2 is shown to be regulated by Wnt3a and essential to stimulation of the Frizzled-1/beta-catenin/Lef-Tcf pathway.
1413 16679742 The nuclear receptor constitutive androstane receptor (CAR), a key transcription factor for the expression of cytochrome P450 (CYP) 2B genes, resides in the cytoplasm under untreated conditions and translocates into the nucleus upon xenobiotic exposure.
1414 16679742 CAR forms a multiprotein complex including heat shock protein 90 in the cytoplasm as the glucocorticoid receptor, and it is likely that protein phosphatase 2A plays a critical role in the first step of CAR nuclear translocation.
1415 16679742 In obese mice fed a high-fat diet, however, hepatic CYP3A levels are drastically decreased without any significant changes in the expression of nuclear receptors including the pregnane X receptor and hepatocyte nuclear factor-4, which are known to be key transcription factors in the expression of CYP3A genes.
1416 16731861 We sequenced the HNF4A gene of 95 MODY3-negative probands from the Norwegian MODY Registry.
1417 16804065 The HNF-4alpha gene (HNF4A) resides on chromosome 20q12-q13.1, which, in addition to type 2 diabetes, has also previously been linked to high triglycerides in Finnish familial combined hyperlipidemia (FCHL) families.
1418 16837621 Mutations in the gene encoding hepatocyte nuclear factor (HNF)1beta result in maturity-onset diabetes of the young-(MODY)5, by impairing insulin secretory responses and, possibly, by reducing beta-cell mass.
1419 16837621 The functional role of HNF1beta in normal beta-cells is poorly understood; therefore, in the present study, wild-type (WT) HNF1beta, or one of two naturally occurring MODY5 mutations (an activating mutation, P328L329del, or a dominant-negative form, A263insGG) were conditionally expressed in the pancreatic beta-cell line, insulin-1 (INS-1), and the functional consequences examined.
1420 16837621 Induction of WT HNF1beta also inhibited the insulin secretory response to nutrient stimuli, membrane depolarisation or activation of protein kinases A and C and this correlated with a significant decrease in pancrease-duodenum homeobox-1 protein levels.
1421 16873704 We examined the association of variants in genes encoding several transcription factors (TCF1, TCF2, HNF4A, ISL1, IPF1, NEUROG3, PAX6, NKX2-2, NKX6-1, and NEUROD1) and genes encoding the ATP-sensitive K(+) channel subunits Kir6.2 (KCNJ11) and SUR1 (ABCC8) with type 2 diabetes in a Japanese cohort of 2,834 subjects.
1422 16893891 Transcriptional regulation of the glucose-6-phosphatase gene by cAMP/vasoactive intestinal peptide in the intestine.
1423 16893891 Role of HNF4alpha, CREM, HNF1alpha, and C/EBPalpha.
1424 16893891 Similarly to the liver, the molecular mechanism of cAMP/protein kinase A regulation involves cAMP-response element-binding protein, HNF4alpha, CAAT/enhancer-binding protein, and HNF1.
1425 16893891 Transcriptional regulation of the glucose-6-phosphatase gene by cAMP/vasoactive intestinal peptide in the intestine.
1426 16893891 Role of HNF4alpha, CREM, HNF1alpha, and C/EBPalpha.
1427 16893891 Similarly to the liver, the molecular mechanism of cAMP/protein kinase A regulation involves cAMP-response element-binding protein, HNF4alpha, CAAT/enhancer-binding protein, and HNF1.
1428 16917892 Mutations in the genes encoding the transcription factors hepatocyte nuclear factor 1 alpha (HNF1A) and 4 alpha (HNF4A) in maturity-onset diabetes of the young.
1429 16917892 MODY is both clinically and genetically heterogeneous, with six different genes identified to date; glucokinase (GCK), hepatocyte nuclear factor-1 alpha (HNF1A, or TCF1), hepatocyte nuclear factor-4 alpha (HNF4A), insulin promoter factor-1 (IPF1 or PDX1), hepatocyte nuclear factor-1 beta (HNF1B or TCF2), and neurogenic differentiation 1 (NEUROD1).
1430 16917892 Mutations in the HNF1A gene are a common cause of MODY in the majority of populations studied.
1431 16917892 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
1432 16917892 The identification of an HNF1A or 4A gene mutation confirms a diagnosis of MODY and has important implications for clinical management.
1433 16917892 Mutations in the genes encoding the transcription factors hepatocyte nuclear factor 1 alpha (HNF1A) and 4 alpha (HNF4A) in maturity-onset diabetes of the young.
1434 16917892 MODY is both clinically and genetically heterogeneous, with six different genes identified to date; glucokinase (GCK), hepatocyte nuclear factor-1 alpha (HNF1A, or TCF1), hepatocyte nuclear factor-4 alpha (HNF4A), insulin promoter factor-1 (IPF1 or PDX1), hepatocyte nuclear factor-1 beta (HNF1B or TCF2), and neurogenic differentiation 1 (NEUROD1).
1435 16917892 Mutations in the HNF1A gene are a common cause of MODY in the majority of populations studied.
1436 16917892 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
1437 16917892 The identification of an HNF1A or 4A gene mutation confirms a diagnosis of MODY and has important implications for clinical management.
1438 16917892 Mutations in the genes encoding the transcription factors hepatocyte nuclear factor 1 alpha (HNF1A) and 4 alpha (HNF4A) in maturity-onset diabetes of the young.
1439 16917892 MODY is both clinically and genetically heterogeneous, with six different genes identified to date; glucokinase (GCK), hepatocyte nuclear factor-1 alpha (HNF1A, or TCF1), hepatocyte nuclear factor-4 alpha (HNF4A), insulin promoter factor-1 (IPF1 or PDX1), hepatocyte nuclear factor-1 beta (HNF1B or TCF2), and neurogenic differentiation 1 (NEUROD1).
1440 16917892 Mutations in the HNF1A gene are a common cause of MODY in the majority of populations studied.
1441 16917892 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
1442 16917892 The identification of an HNF1A or 4A gene mutation confirms a diagnosis of MODY and has important implications for clinical management.
1443 16917892 Mutations in the genes encoding the transcription factors hepatocyte nuclear factor 1 alpha (HNF1A) and 4 alpha (HNF4A) in maturity-onset diabetes of the young.
1444 16917892 MODY is both clinically and genetically heterogeneous, with six different genes identified to date; glucokinase (GCK), hepatocyte nuclear factor-1 alpha (HNF1A, or TCF1), hepatocyte nuclear factor-4 alpha (HNF4A), insulin promoter factor-1 (IPF1 or PDX1), hepatocyte nuclear factor-1 beta (HNF1B or TCF2), and neurogenic differentiation 1 (NEUROD1).
1445 16917892 Mutations in the HNF1A gene are a common cause of MODY in the majority of populations studied.
1446 16917892 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
1447 16917892 The identification of an HNF1A or 4A gene mutation confirms a diagnosis of MODY and has important implications for clinical management.
1448 16917892 Mutations in the genes encoding the transcription factors hepatocyte nuclear factor 1 alpha (HNF1A) and 4 alpha (HNF4A) in maturity-onset diabetes of the young.
1449 16917892 MODY is both clinically and genetically heterogeneous, with six different genes identified to date; glucokinase (GCK), hepatocyte nuclear factor-1 alpha (HNF1A, or TCF1), hepatocyte nuclear factor-4 alpha (HNF4A), insulin promoter factor-1 (IPF1 or PDX1), hepatocyte nuclear factor-1 beta (HNF1B or TCF2), and neurogenic differentiation 1 (NEUROD1).
1450 16917892 Mutations in the HNF1A gene are a common cause of MODY in the majority of populations studied.
1451 16917892 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
1452 16917892 The identification of an HNF1A or 4A gene mutation confirms a diagnosis of MODY and has important implications for clinical management.
1453 16925503 Mild fasting hyperglycaemia caused by heterozygous GCK mutations rarely requires pharmacological intervention, whereas patients with mutations in the genes encoding the transcription factors HNF-1alpha and HNF-4alpha respond well to low doses of sulphonylureas.
1454 16929032 Apolipoprotein A-IV is regulated by nutritional and metabolic stress: involvement of glucocorticoids, HNF-4 alpha, and PGC-1 alpha.
1455 16929032 Apolipoprotein A-IV (apoA-IV) is a 46 kDa glycoprotein that associates with triglyceride-rich and high density lipoproteins.
1456 16929032 Reporter gene analysis of the murine and human apoA-IV/C-III promoters revealed a conserved cooperative activation by the hepatic nuclear factor-4 alpha (HNF-4 alpha) and the peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1 alpha) but no evidence of a direct regulatory role for the glucocorticoid receptor.
1457 16929032 Consistent with these in vitro data, induction of apoA-IV in response to fasting was accompanied by increases in HNF-4 alpha and PGC-1 alpha expression and was abolished in liver-specific HNF-4 alpha-deficient mice.
1458 16929032 Together, these results indicate that the induction of apoA-IV expression in fasting and diabetes likely involves PGC-1 alpha-mediated coactivation of HNF-4 alpha in addition to glucocorticoid-dependent actions.
1459 16929032 Apolipoprotein A-IV is regulated by nutritional and metabolic stress: involvement of glucocorticoids, HNF-4 alpha, and PGC-1 alpha.
1460 16929032 Apolipoprotein A-IV (apoA-IV) is a 46 kDa glycoprotein that associates with triglyceride-rich and high density lipoproteins.
1461 16929032 Reporter gene analysis of the murine and human apoA-IV/C-III promoters revealed a conserved cooperative activation by the hepatic nuclear factor-4 alpha (HNF-4 alpha) and the peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1 alpha) but no evidence of a direct regulatory role for the glucocorticoid receptor.
1462 16929032 Consistent with these in vitro data, induction of apoA-IV in response to fasting was accompanied by increases in HNF-4 alpha and PGC-1 alpha expression and was abolished in liver-specific HNF-4 alpha-deficient mice.
1463 16929032 Together, these results indicate that the induction of apoA-IV expression in fasting and diabetes likely involves PGC-1 alpha-mediated coactivation of HNF-4 alpha in addition to glucocorticoid-dependent actions.
1464 16929032 Apolipoprotein A-IV is regulated by nutritional and metabolic stress: involvement of glucocorticoids, HNF-4 alpha, and PGC-1 alpha.
1465 16929032 Apolipoprotein A-IV (apoA-IV) is a 46 kDa glycoprotein that associates with triglyceride-rich and high density lipoproteins.
1466 16929032 Reporter gene analysis of the murine and human apoA-IV/C-III promoters revealed a conserved cooperative activation by the hepatic nuclear factor-4 alpha (HNF-4 alpha) and the peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1 alpha) but no evidence of a direct regulatory role for the glucocorticoid receptor.
1467 16929032 Consistent with these in vitro data, induction of apoA-IV in response to fasting was accompanied by increases in HNF-4 alpha and PGC-1 alpha expression and was abolished in liver-specific HNF-4 alpha-deficient mice.
1468 16929032 Together, these results indicate that the induction of apoA-IV expression in fasting and diabetes likely involves PGC-1 alpha-mediated coactivation of HNF-4 alpha in addition to glucocorticoid-dependent actions.
1469 16929032 Apolipoprotein A-IV is regulated by nutritional and metabolic stress: involvement of glucocorticoids, HNF-4 alpha, and PGC-1 alpha.
1470 16929032 Apolipoprotein A-IV (apoA-IV) is a 46 kDa glycoprotein that associates with triglyceride-rich and high density lipoproteins.
1471 16929032 Reporter gene analysis of the murine and human apoA-IV/C-III promoters revealed a conserved cooperative activation by the hepatic nuclear factor-4 alpha (HNF-4 alpha) and the peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1 alpha) but no evidence of a direct regulatory role for the glucocorticoid receptor.
1472 16929032 Consistent with these in vitro data, induction of apoA-IV in response to fasting was accompanied by increases in HNF-4 alpha and PGC-1 alpha expression and was abolished in liver-specific HNF-4 alpha-deficient mice.
1473 16929032 Together, these results indicate that the induction of apoA-IV expression in fasting and diabetes likely involves PGC-1 alpha-mediated coactivation of HNF-4 alpha in addition to glucocorticoid-dependent actions.
1474 16936201 After correcting for testing multiple correlated SNPs within a gene, we find evidence of type 2 diabetes association with SNPs in five of the six known MODY genes: GCK, HNF1A, HNF1B, NEUROD1, and HNF4A.
1475 17022998 Hepatocyte nuclear factor 4 alpha ligand binding and F domains mediate interaction and transcriptional synergy with the pancreatic islet LIM HD transcription factor Isl1.
1476 17022998 The orphan nuclear receptor HNF4alpha and the LIM homeodomain factor Isl1 are co-expressed in pancreatic beta-cells and are required for the differentiation and function of these endocrine cells.
1477 17022998 These transcriptional partners interact mainly through the HNF4alpha AF-1 module and the ligand binding domain, which contains the AF-2 module.
1478 17022998 Here, we showed that Isl1 could enhance the HNF4alpha-mediated activation of transcription of the HNF1alpha, PPARalpha and insulin I promoters.
1479 17022998 Isl1 interacted with the HNF4alpha AF-2 but also required the HNF4alpha carboxy-terminal F domain for optimal interaction and transcriptional synergy.
1480 17022998 More specifically, we found that naturally occurring HNF4alpha isoforms, differing only in their F domain, exhibited different abilities to interact and synergize with Isl1, extending the crucial transcriptional modulatory role of the HNF4alpha F domain.
1481 17022998 HNF4alpha interacted with both the homeodomain and the first LIM domain of Isl1.
1482 17022998 We found that the transcriptional synergy between HNF4alpha and Isl1 involved an increase in HNF4alpha loading on promoter.
1483 17022998 The effect was more pronounced on the rat insulin I promoter containing binding sites for both HNF4alpha and Isl1 than on the human HNF1alpha promoter lacking an Isl1 binding site.
1484 17022998 Moreover, Isl1 could mediate the recruitment of the cofactor CLIM2 resulting in a further transcriptional enhancement of the HNF1alpha promoter activity.
1485 17022998 Hepatocyte nuclear factor 4 alpha ligand binding and F domains mediate interaction and transcriptional synergy with the pancreatic islet LIM HD transcription factor Isl1.
1486 17022998 The orphan nuclear receptor HNF4alpha and the LIM homeodomain factor Isl1 are co-expressed in pancreatic beta-cells and are required for the differentiation and function of these endocrine cells.
1487 17022998 These transcriptional partners interact mainly through the HNF4alpha AF-1 module and the ligand binding domain, which contains the AF-2 module.
1488 17022998 Here, we showed that Isl1 could enhance the HNF4alpha-mediated activation of transcription of the HNF1alpha, PPARalpha and insulin I promoters.
1489 17022998 Isl1 interacted with the HNF4alpha AF-2 but also required the HNF4alpha carboxy-terminal F domain for optimal interaction and transcriptional synergy.
1490 17022998 More specifically, we found that naturally occurring HNF4alpha isoforms, differing only in their F domain, exhibited different abilities to interact and synergize with Isl1, extending the crucial transcriptional modulatory role of the HNF4alpha F domain.
1491 17022998 HNF4alpha interacted with both the homeodomain and the first LIM domain of Isl1.
1492 17022998 We found that the transcriptional synergy between HNF4alpha and Isl1 involved an increase in HNF4alpha loading on promoter.
1493 17022998 The effect was more pronounced on the rat insulin I promoter containing binding sites for both HNF4alpha and Isl1 than on the human HNF1alpha promoter lacking an Isl1 binding site.
1494 17022998 Moreover, Isl1 could mediate the recruitment of the cofactor CLIM2 resulting in a further transcriptional enhancement of the HNF1alpha promoter activity.
1495 17022998 Hepatocyte nuclear factor 4 alpha ligand binding and F domains mediate interaction and transcriptional synergy with the pancreatic islet LIM HD transcription factor Isl1.
1496 17022998 The orphan nuclear receptor HNF4alpha and the LIM homeodomain factor Isl1 are co-expressed in pancreatic beta-cells and are required for the differentiation and function of these endocrine cells.
1497 17022998 These transcriptional partners interact mainly through the HNF4alpha AF-1 module and the ligand binding domain, which contains the AF-2 module.
1498 17022998 Here, we showed that Isl1 could enhance the HNF4alpha-mediated activation of transcription of the HNF1alpha, PPARalpha and insulin I promoters.
1499 17022998 Isl1 interacted with the HNF4alpha AF-2 but also required the HNF4alpha carboxy-terminal F domain for optimal interaction and transcriptional synergy.
1500 17022998 More specifically, we found that naturally occurring HNF4alpha isoforms, differing only in their F domain, exhibited different abilities to interact and synergize with Isl1, extending the crucial transcriptional modulatory role of the HNF4alpha F domain.
1501 17022998 HNF4alpha interacted with both the homeodomain and the first LIM domain of Isl1.
1502 17022998 We found that the transcriptional synergy between HNF4alpha and Isl1 involved an increase in HNF4alpha loading on promoter.
1503 17022998 The effect was more pronounced on the rat insulin I promoter containing binding sites for both HNF4alpha and Isl1 than on the human HNF1alpha promoter lacking an Isl1 binding site.
1504 17022998 Moreover, Isl1 could mediate the recruitment of the cofactor CLIM2 resulting in a further transcriptional enhancement of the HNF1alpha promoter activity.
1505 17022998 Hepatocyte nuclear factor 4 alpha ligand binding and F domains mediate interaction and transcriptional synergy with the pancreatic islet LIM HD transcription factor Isl1.
1506 17022998 The orphan nuclear receptor HNF4alpha and the LIM homeodomain factor Isl1 are co-expressed in pancreatic beta-cells and are required for the differentiation and function of these endocrine cells.
1507 17022998 These transcriptional partners interact mainly through the HNF4alpha AF-1 module and the ligand binding domain, which contains the AF-2 module.
1508 17022998 Here, we showed that Isl1 could enhance the HNF4alpha-mediated activation of transcription of the HNF1alpha, PPARalpha and insulin I promoters.
1509 17022998 Isl1 interacted with the HNF4alpha AF-2 but also required the HNF4alpha carboxy-terminal F domain for optimal interaction and transcriptional synergy.
1510 17022998 More specifically, we found that naturally occurring HNF4alpha isoforms, differing only in their F domain, exhibited different abilities to interact and synergize with Isl1, extending the crucial transcriptional modulatory role of the HNF4alpha F domain.
1511 17022998 HNF4alpha interacted with both the homeodomain and the first LIM domain of Isl1.
1512 17022998 We found that the transcriptional synergy between HNF4alpha and Isl1 involved an increase in HNF4alpha loading on promoter.
1513 17022998 The effect was more pronounced on the rat insulin I promoter containing binding sites for both HNF4alpha and Isl1 than on the human HNF1alpha promoter lacking an Isl1 binding site.
1514 17022998 Moreover, Isl1 could mediate the recruitment of the cofactor CLIM2 resulting in a further transcriptional enhancement of the HNF1alpha promoter activity.
1515 17022998 Hepatocyte nuclear factor 4 alpha ligand binding and F domains mediate interaction and transcriptional synergy with the pancreatic islet LIM HD transcription factor Isl1.
1516 17022998 The orphan nuclear receptor HNF4alpha and the LIM homeodomain factor Isl1 are co-expressed in pancreatic beta-cells and are required for the differentiation and function of these endocrine cells.
1517 17022998 These transcriptional partners interact mainly through the HNF4alpha AF-1 module and the ligand binding domain, which contains the AF-2 module.
1518 17022998 Here, we showed that Isl1 could enhance the HNF4alpha-mediated activation of transcription of the HNF1alpha, PPARalpha and insulin I promoters.
1519 17022998 Isl1 interacted with the HNF4alpha AF-2 but also required the HNF4alpha carboxy-terminal F domain for optimal interaction and transcriptional synergy.
1520 17022998 More specifically, we found that naturally occurring HNF4alpha isoforms, differing only in their F domain, exhibited different abilities to interact and synergize with Isl1, extending the crucial transcriptional modulatory role of the HNF4alpha F domain.
1521 17022998 HNF4alpha interacted with both the homeodomain and the first LIM domain of Isl1.
1522 17022998 We found that the transcriptional synergy between HNF4alpha and Isl1 involved an increase in HNF4alpha loading on promoter.
1523 17022998 The effect was more pronounced on the rat insulin I promoter containing binding sites for both HNF4alpha and Isl1 than on the human HNF1alpha promoter lacking an Isl1 binding site.
1524 17022998 Moreover, Isl1 could mediate the recruitment of the cofactor CLIM2 resulting in a further transcriptional enhancement of the HNF1alpha promoter activity.
1525 17022998 Hepatocyte nuclear factor 4 alpha ligand binding and F domains mediate interaction and transcriptional synergy with the pancreatic islet LIM HD transcription factor Isl1.
1526 17022998 The orphan nuclear receptor HNF4alpha and the LIM homeodomain factor Isl1 are co-expressed in pancreatic beta-cells and are required for the differentiation and function of these endocrine cells.
1527 17022998 These transcriptional partners interact mainly through the HNF4alpha AF-1 module and the ligand binding domain, which contains the AF-2 module.
1528 17022998 Here, we showed that Isl1 could enhance the HNF4alpha-mediated activation of transcription of the HNF1alpha, PPARalpha and insulin I promoters.
1529 17022998 Isl1 interacted with the HNF4alpha AF-2 but also required the HNF4alpha carboxy-terminal F domain for optimal interaction and transcriptional synergy.
1530 17022998 More specifically, we found that naturally occurring HNF4alpha isoforms, differing only in their F domain, exhibited different abilities to interact and synergize with Isl1, extending the crucial transcriptional modulatory role of the HNF4alpha F domain.
1531 17022998 HNF4alpha interacted with both the homeodomain and the first LIM domain of Isl1.
1532 17022998 We found that the transcriptional synergy between HNF4alpha and Isl1 involved an increase in HNF4alpha loading on promoter.
1533 17022998 The effect was more pronounced on the rat insulin I promoter containing binding sites for both HNF4alpha and Isl1 than on the human HNF1alpha promoter lacking an Isl1 binding site.
1534 17022998 Moreover, Isl1 could mediate the recruitment of the cofactor CLIM2 resulting in a further transcriptional enhancement of the HNF1alpha promoter activity.
1535 17022998 Hepatocyte nuclear factor 4 alpha ligand binding and F domains mediate interaction and transcriptional synergy with the pancreatic islet LIM HD transcription factor Isl1.
1536 17022998 The orphan nuclear receptor HNF4alpha and the LIM homeodomain factor Isl1 are co-expressed in pancreatic beta-cells and are required for the differentiation and function of these endocrine cells.
1537 17022998 These transcriptional partners interact mainly through the HNF4alpha AF-1 module and the ligand binding domain, which contains the AF-2 module.
1538 17022998 Here, we showed that Isl1 could enhance the HNF4alpha-mediated activation of transcription of the HNF1alpha, PPARalpha and insulin I promoters.
1539 17022998 Isl1 interacted with the HNF4alpha AF-2 but also required the HNF4alpha carboxy-terminal F domain for optimal interaction and transcriptional synergy.
1540 17022998 More specifically, we found that naturally occurring HNF4alpha isoforms, differing only in their F domain, exhibited different abilities to interact and synergize with Isl1, extending the crucial transcriptional modulatory role of the HNF4alpha F domain.
1541 17022998 HNF4alpha interacted with both the homeodomain and the first LIM domain of Isl1.
1542 17022998 We found that the transcriptional synergy between HNF4alpha and Isl1 involved an increase in HNF4alpha loading on promoter.
1543 17022998 The effect was more pronounced on the rat insulin I promoter containing binding sites for both HNF4alpha and Isl1 than on the human HNF1alpha promoter lacking an Isl1 binding site.
1544 17022998 Moreover, Isl1 could mediate the recruitment of the cofactor CLIM2 resulting in a further transcriptional enhancement of the HNF1alpha promoter activity.
1545 17022998 Hepatocyte nuclear factor 4 alpha ligand binding and F domains mediate interaction and transcriptional synergy with the pancreatic islet LIM HD transcription factor Isl1.
1546 17022998 The orphan nuclear receptor HNF4alpha and the LIM homeodomain factor Isl1 are co-expressed in pancreatic beta-cells and are required for the differentiation and function of these endocrine cells.
1547 17022998 These transcriptional partners interact mainly through the HNF4alpha AF-1 module and the ligand binding domain, which contains the AF-2 module.
1548 17022998 Here, we showed that Isl1 could enhance the HNF4alpha-mediated activation of transcription of the HNF1alpha, PPARalpha and insulin I promoters.
1549 17022998 Isl1 interacted with the HNF4alpha AF-2 but also required the HNF4alpha carboxy-terminal F domain for optimal interaction and transcriptional synergy.
1550 17022998 More specifically, we found that naturally occurring HNF4alpha isoforms, differing only in their F domain, exhibited different abilities to interact and synergize with Isl1, extending the crucial transcriptional modulatory role of the HNF4alpha F domain.
1551 17022998 HNF4alpha interacted with both the homeodomain and the first LIM domain of Isl1.
1552 17022998 We found that the transcriptional synergy between HNF4alpha and Isl1 involved an increase in HNF4alpha loading on promoter.
1553 17022998 The effect was more pronounced on the rat insulin I promoter containing binding sites for both HNF4alpha and Isl1 than on the human HNF1alpha promoter lacking an Isl1 binding site.
1554 17022998 Moreover, Isl1 could mediate the recruitment of the cofactor CLIM2 resulting in a further transcriptional enhancement of the HNF1alpha promoter activity.
1555 17131493 Mutations of the MEN1 and Mody (2/3) genes were ruled out.
1556 17204055 Six novel mutations in the GCK gene in MODY patients.
1557 17214554 Mutations in the HNF4alpha gene in humans give rise to maturity-onset diabetes of the young (MODY1) characterized by defective insulin secretion by beta-cells.
1558 17214554 We verified the induction of selected transcripts by real-time RT-PCR, including KAI1 and AIF, both known to have apoptotic potential.
1559 17286239 Patients with HNF-1alpha related MODY may develop the full spectrum of diabetic complications.
1560 17317781 Negative regulation of c-Myc transcription by pancreas duodenum homeobox-1.
1561 17317781 The pancreatic and duodenal homeobox factor-1 (Pdx1) is essential for pancreatic development and insulin gene transcription, whereas c-Myc has a deleterious effect on islet function.
1562 17317781 However, the relationship between c-Myc and Pdx1 is poorly concerned.
1563 17317781 Here we demonstrated that Pdx1 could suppress c-Myc promoter activity, which relied on T cell factor (Tcf) binding elements harbored in c-Myc promoter.
1564 17317781 Furthermore, the transcription activity of beta-catenin/Tcf was markedly decreased on Pdx1 expression, but cotransfection of Pdx1 short hairpin RNA abrogated this effect.
1565 17317781 Pdx1 expression did not induce beta-catenin degradation nor did it alter their subcellular distribution.
1566 17317781 The mutation analysis showed that the amino acids (1-209) of Pdx1 harboring an inhibitory domain, which might lead to the reduction of beta-catenin/Tcf/p300 complex levels and attenuate their binding activity with c-Myc promoter sequences.
1567 17317781 Moreover, adenovirus-mediated Pdx1 interference caused cell proliferation and cytokine-induced apoptosis via the dysregulation of c-Myc transcription.
1568 17317781 These results indicated that the Pdx1 functioned as a key regulator for maintenance of beta-cell function, at least in part, through controlling c-Myc expression and the loss of its regulatory function may be an alternative mechanism for beta-cell neogenesis and apoptosis found in diabetes.
1569 17327436 Specifically, we determined patterns of common sequence variation in the genes encoding Gck, Ipf1, Tcf2, and NeuroD1 (MODY2 and MODY4-MODY6, respectively), selected a comprehensive set of 107 tag single nucleotide polymorphisms (SNPs) that captured common variation, and genotyped each in 4,206 patients and control subjects from Sweden, Finland, and Canada (including family-based studies and unrelated case-control subjects).
1570 17327436 We combined these results with our previous studies on HNF4alpha and TCF1 and explicitly tested for gene-gene interactions among these variants and with several known type 2 diabetes susceptibility loci, and we found no genetic interactions between these six genes.
1571 17343826 The human intestinal fatty acid binding protein (hFABP2) gene is regulated by HNF-4alpha.
1572 17343826 The aim of this study was to investigate the regulation of hFABP2 by the endodermal hepatocyte nuclear factor 4alpha (HNF-4alpha), involved in regulation of genes of fatty acid metabolism and differentiation.
1573 17343826 Electromobility shift assays demonstrated that HNF-4alpha binds at position -324 to -336 within the hFABP2 promoter.
1574 17343826 Mutation of this HNF-4 binding site abolished the luciferase reporter activity of hFABP2 in postconfluent Caco-2 cells.
1575 17343826 In HeLa cells, this mutation reduced the activation of the hFABP2 promoter by HNF-4alpha by about 50%.
1576 17343826 Studying genotype interactions of hFABP2 and HNF-4alpha, that are both candidate genes for diabetes type 2, may be a powerful approach.
1577 17343826 The human intestinal fatty acid binding protein (hFABP2) gene is regulated by HNF-4alpha.
1578 17343826 The aim of this study was to investigate the regulation of hFABP2 by the endodermal hepatocyte nuclear factor 4alpha (HNF-4alpha), involved in regulation of genes of fatty acid metabolism and differentiation.
1579 17343826 Electromobility shift assays demonstrated that HNF-4alpha binds at position -324 to -336 within the hFABP2 promoter.
1580 17343826 Mutation of this HNF-4 binding site abolished the luciferase reporter activity of hFABP2 in postconfluent Caco-2 cells.
1581 17343826 In HeLa cells, this mutation reduced the activation of the hFABP2 promoter by HNF-4alpha by about 50%.
1582 17343826 Studying genotype interactions of hFABP2 and HNF-4alpha, that are both candidate genes for diabetes type 2, may be a powerful approach.
1583 17343826 The human intestinal fatty acid binding protein (hFABP2) gene is regulated by HNF-4alpha.
1584 17343826 The aim of this study was to investigate the regulation of hFABP2 by the endodermal hepatocyte nuclear factor 4alpha (HNF-4alpha), involved in regulation of genes of fatty acid metabolism and differentiation.
1585 17343826 Electromobility shift assays demonstrated that HNF-4alpha binds at position -324 to -336 within the hFABP2 promoter.
1586 17343826 Mutation of this HNF-4 binding site abolished the luciferase reporter activity of hFABP2 in postconfluent Caco-2 cells.
1587 17343826 In HeLa cells, this mutation reduced the activation of the hFABP2 promoter by HNF-4alpha by about 50%.
1588 17343826 Studying genotype interactions of hFABP2 and HNF-4alpha, that are both candidate genes for diabetes type 2, may be a powerful approach.
1589 17343826 The human intestinal fatty acid binding protein (hFABP2) gene is regulated by HNF-4alpha.
1590 17343826 The aim of this study was to investigate the regulation of hFABP2 by the endodermal hepatocyte nuclear factor 4alpha (HNF-4alpha), involved in regulation of genes of fatty acid metabolism and differentiation.
1591 17343826 Electromobility shift assays demonstrated that HNF-4alpha binds at position -324 to -336 within the hFABP2 promoter.
1592 17343826 Mutation of this HNF-4 binding site abolished the luciferase reporter activity of hFABP2 in postconfluent Caco-2 cells.
1593 17343826 In HeLa cells, this mutation reduced the activation of the hFABP2 promoter by HNF-4alpha by about 50%.
1594 17343826 Studying genotype interactions of hFABP2 and HNF-4alpha, that are both candidate genes for diabetes type 2, may be a powerful approach.
1595 17343826 The human intestinal fatty acid binding protein (hFABP2) gene is regulated by HNF-4alpha.
1596 17343826 The aim of this study was to investigate the regulation of hFABP2 by the endodermal hepatocyte nuclear factor 4alpha (HNF-4alpha), involved in regulation of genes of fatty acid metabolism and differentiation.
1597 17343826 Electromobility shift assays demonstrated that HNF-4alpha binds at position -324 to -336 within the hFABP2 promoter.
1598 17343826 Mutation of this HNF-4 binding site abolished the luciferase reporter activity of hFABP2 in postconfluent Caco-2 cells.
1599 17343826 In HeLa cells, this mutation reduced the activation of the hFABP2 promoter by HNF-4alpha by about 50%.
1600 17343826 Studying genotype interactions of hFABP2 and HNF-4alpha, that are both candidate genes for diabetes type 2, may be a powerful approach.
1601 17343826 The human intestinal fatty acid binding protein (hFABP2) gene is regulated by HNF-4alpha.
1602 17343826 The aim of this study was to investigate the regulation of hFABP2 by the endodermal hepatocyte nuclear factor 4alpha (HNF-4alpha), involved in regulation of genes of fatty acid metabolism and differentiation.
1603 17343826 Electromobility shift assays demonstrated that HNF-4alpha binds at position -324 to -336 within the hFABP2 promoter.
1604 17343826 Mutation of this HNF-4 binding site abolished the luciferase reporter activity of hFABP2 in postconfluent Caco-2 cells.
1605 17343826 In HeLa cells, this mutation reduced the activation of the hFABP2 promoter by HNF-4alpha by about 50%.
1606 17343826 Studying genotype interactions of hFABP2 and HNF-4alpha, that are both candidate genes for diabetes type 2, may be a powerful approach.
1607 17403778 Here we demonstrate that the proliferative response of beta-cells is dependent on the orphan nuclear receptor hepatocyte nuclear factor-4alpha (HNF-4alpha), the gene that is mutated in Maturity-Onset Diabetes of the Young 1 (MODY1).
1608 17403778 This phenotype correlates with the down-regulation of suppression of tumorigenicity 5 (ST5) in HNF-4alpha mutants, which we identify as a novel regulator of ERK phosphorylation in beta-cells and a direct transcriptional target of HNF-4alpha in vivo.
1609 17403778 Here we demonstrate that the proliferative response of beta-cells is dependent on the orphan nuclear receptor hepatocyte nuclear factor-4alpha (HNF-4alpha), the gene that is mutated in Maturity-Onset Diabetes of the Young 1 (MODY1).
1610 17403778 This phenotype correlates with the down-regulation of suppression of tumorigenicity 5 (ST5) in HNF-4alpha mutants, which we identify as a novel regulator of ERK phosphorylation in beta-cells and a direct transcriptional target of HNF-4alpha in vivo.
1611 17425917 Maturity-onset diabetes of the young (MODY) is a type of non-insulin-dependent diabetes mellitus caused by rare autosomal-dominant mutations.
1612 17466274 The marker screening enabled us to identify significant disease association in the lipopolysaccharide binding protein (LBP) but not in the HNF4A locus.
1613 17551475 These include the enzyme glucokinase, which causes MODY2, and the transcription factors HNF- 4 alpha, TCF1, I PF-1, TCF2, and NeuroD1, which cause MODY1, 3, 4, 5, and 6, respectively.
1614 17805472 This study was aimed to assess the association of the two single nucleotide polymorphisms (SNPs) near P2 promoter (rs1884614 and rs2144908) of hepatocyte nuclear factor-4alpha (HNF4A) with insulin secretion index and type 2 diabetes in Thais.
1615 17882463 Recent advances provide insights into how poorly water-soluble lipid nutrients [LCFA; retinoic acid (RA)] and their metabolites (long chain fatty acyl Coenzyme A, LCFA-CoA) reach nuclei, bind their cognate ligand-activated receptors, and regulate transcription for signaling lipid and glucose catabolism or storage: (i) while serum and cytoplasmic LCFA levels are in the 200 mircroM-mM range, real-time imaging recently revealed that LCFA and LCFA-CoA are also located within nuclei (nM range); (ii) sensitive fluorescence binding assays show that LCFA-activated nuclear receptors [peroxisome proliferator-activated receptor-alpha (PPARalpha) and hepatocyte nuclear factor 4alpha (HNF4alpha)] exhibit high affinity (low nM KdS) for LCFA (PPARalpha) and/or LCFA-CoA (PPARalpha, HNF4alpha)-in the same range as nuclear levels of these ligands; (iii) live and fixed cell immunolabeling and imaging revealed that some cytoplasmic lipid binding proteins [liver fatty acid binding protein (L-FABP), acyl CoA binding protein (ACBP), cellular retinoic acid binding protein-2 (CRABP-2)] enter nuclei, bind nuclear receptors (PPARalpha, HNF4alpha, CRABP-2), and activate transcription of genes in fatty acid and glucose metabolism; and (iv) studies with gene ablated mice provided physiological relevance of LCFA and LCFA-CoA binding proteins in nuclear signaling.
1616 17919177 Maturity-onset diabetes of the young (MODY) is a monogenic form of type 2 diabetes mellitus that is characterized by impairment of glucose-stimulated insulin secretion from pancreatic beta-cells.
1617 17919177 We previously reported that heterozygous mutations of the hepatocyte nuclear factor (HNF)-1alpha gene cause a form of MODY (MODY3).
1618 17919177 In addition, we have demonstrated that collectrin forms a complex with the soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complex by direct interaction with snapin, a protein that is thought to be involved in neurotransmission by binding to synaptosomal-associated protein, 25 KD (SNAP25).
1619 17919177 Collectrin favours the formation of SNARE complexes and controls insulin exocytosis.
1620 17919177 Maturity-onset diabetes of the young (MODY) is a monogenic form of type 2 diabetes mellitus that is characterized by impairment of glucose-stimulated insulin secretion from pancreatic beta-cells.
1621 17919177 We previously reported that heterozygous mutations of the hepatocyte nuclear factor (HNF)-1alpha gene cause a form of MODY (MODY3).
1622 17919177 In addition, we have demonstrated that collectrin forms a complex with the soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complex by direct interaction with snapin, a protein that is thought to be involved in neurotransmission by binding to synaptosomal-associated protein, 25 KD (SNAP25).
1623 17919177 Collectrin favours the formation of SNARE complexes and controls insulin exocytosis.
1624 17923767 Distinct roles of HNF1beta, HNF1alpha, and HNF4alpha in regulating pancreas development, beta-cell function and growth.
1625 17923767 Mutations in the genes encoding transcriptional regulators HNF1beta (TCF2), HNF1alpha (TCF1), and HNF4alpha cause autosomal dominant diabetes (also known as maturity-onset diabetes of the young).
1626 17923767 By contrast, HNF1alpha and HNF4alpha have been shown to regulate the function of differentiated beta-cells.
1627 17923767 HNF1alpha and HNF4alpha mutations in patients thus cause decreased glucose-induced insulin secretion that leads to a progressive form of diabetes.
1628 17923767 Collectively, these findings implicate HNF1beta as a regulator of pancreas organogenesis and differentiation, whereas HNF1alpha and HNF4alpha primarily regulate both growth and function of islet beta-cells.
1629 17923767 Distinct roles of HNF1beta, HNF1alpha, and HNF4alpha in regulating pancreas development, beta-cell function and growth.
1630 17923767 Mutations in the genes encoding transcriptional regulators HNF1beta (TCF2), HNF1alpha (TCF1), and HNF4alpha cause autosomal dominant diabetes (also known as maturity-onset diabetes of the young).
1631 17923767 By contrast, HNF1alpha and HNF4alpha have been shown to regulate the function of differentiated beta-cells.
1632 17923767 HNF1alpha and HNF4alpha mutations in patients thus cause decreased glucose-induced insulin secretion that leads to a progressive form of diabetes.
1633 17923767 Collectively, these findings implicate HNF1beta as a regulator of pancreas organogenesis and differentiation, whereas HNF1alpha and HNF4alpha primarily regulate both growth and function of islet beta-cells.
1634 17923767 Distinct roles of HNF1beta, HNF1alpha, and HNF4alpha in regulating pancreas development, beta-cell function and growth.
1635 17923767 Mutations in the genes encoding transcriptional regulators HNF1beta (TCF2), HNF1alpha (TCF1), and HNF4alpha cause autosomal dominant diabetes (also known as maturity-onset diabetes of the young).
1636 17923767 By contrast, HNF1alpha and HNF4alpha have been shown to regulate the function of differentiated beta-cells.
1637 17923767 HNF1alpha and HNF4alpha mutations in patients thus cause decreased glucose-induced insulin secretion that leads to a progressive form of diabetes.
1638 17923767 Collectively, these findings implicate HNF1beta as a regulator of pancreas organogenesis and differentiation, whereas HNF1alpha and HNF4alpha primarily regulate both growth and function of islet beta-cells.
1639 17923767 Distinct roles of HNF1beta, HNF1alpha, and HNF4alpha in regulating pancreas development, beta-cell function and growth.
1640 17923767 Mutations in the genes encoding transcriptional regulators HNF1beta (TCF2), HNF1alpha (TCF1), and HNF4alpha cause autosomal dominant diabetes (also known as maturity-onset diabetes of the young).
1641 17923767 By contrast, HNF1alpha and HNF4alpha have been shown to regulate the function of differentiated beta-cells.
1642 17923767 HNF1alpha and HNF4alpha mutations in patients thus cause decreased glucose-induced insulin secretion that leads to a progressive form of diabetes.
1643 17923767 Collectively, these findings implicate HNF1beta as a regulator of pancreas organogenesis and differentiation, whereas HNF1alpha and HNF4alpha primarily regulate both growth and function of islet beta-cells.
1644 17923767 Distinct roles of HNF1beta, HNF1alpha, and HNF4alpha in regulating pancreas development, beta-cell function and growth.
1645 17923767 Mutations in the genes encoding transcriptional regulators HNF1beta (TCF2), HNF1alpha (TCF1), and HNF4alpha cause autosomal dominant diabetes (also known as maturity-onset diabetes of the young).
1646 17923767 By contrast, HNF1alpha and HNF4alpha have been shown to regulate the function of differentiated beta-cells.
1647 17923767 HNF1alpha and HNF4alpha mutations in patients thus cause decreased glucose-induced insulin secretion that leads to a progressive form of diabetes.
1648 17923767 Collectively, these findings implicate HNF1beta as a regulator of pancreas organogenesis and differentiation, whereas HNF1alpha and HNF4alpha primarily regulate both growth and function of islet beta-cells.
1649 17937063 Four novel mutations, including the first gross deletion in TCF1, identified in HNF-4alpha, GCK and TCF1 in patients with MODY in Israel.
1650 17937063 Fifty-nine unrelated Israeli patients with MODY were assessed for mutations in the three common MODY genes: hepatocyte nuclear factor (HNF)-4alpha, glucokinase (GCK), and transcription factor 1 (TCF1).
1651 17937063 Four mutations were novel, including the first gross deletion ever described in the TCF1 gene.
1652 17993259 We show here that insulin stimulates cell proliferation and c-Myc expression in colon cancer cell lines HT29 and Caco-2, intestinal non-cancer cell line IEC-6, and primary fetal rat intestinal cell (FRIC) cultures.
1653 17993259 The effect of insulin was blocked by phosphoinositide-3 Kinase (PI3K) inhibition, but only partially attenuated by inhibition of Protein kinase B (PKB), indicating the existence of both PKB-dependent and -independent mechanisms.
1654 17993259 The PKB-dependent mechanism of insulin-stimulated c-Myc expression in HT29 cells was shown to involve the activation of mTOR in c-Myc translation.
1655 17993259 In the investigation of the PKB-independent mechanism, we found that insulin-induced nuclear translocation of beta-catenin (beta-cat), an effector of Wnt signaling.
1656 17993259 Finally, chromatin immunoprecipitation (ChIP) detected significant increases in the binding of beta-cat to two TCF binding sites of the human c-Myc promoter following insulin treatment.
1657 17993259 Our observations support the existence of crosstalk between insulin and Wnt signaling pathways, and suggest that the crosstalk involves a PKB-independent mechanism.
1658 17996499 Expression of HNF-4alpha (MODY1), HNF-1beta (MODY5), and HNF-1alpha (MODY3) proteins in the developing mouse pancreas.
1659 17996499 The type 1, 3, and 5 forms of maturity-onset diabetes of the young (MODY) are caused by mutations of the genes encoding hepatocyte nuclear factor (HNF)-4alpha, HNF-1alpha, and HNF-1beta, respectively [Yamagata, K., Oda, N., Kaisaki, P.J., Menzel, S., Furuta, H., Vaxillaire, M., et al., 1996a.
1660 17996499 Mutation in hepatocyte nuclear factor-1beta gene (TCF2) associated with MODY.
1661 17996499 We performed an immunohistochemical study to investigate its expression in comparison with the expression of HNF-1alpha and HNF-1beta.
1662 17996499 HNF-4alpha and HNF-1beta were initially expressed by Pdx1(+) common progenitor cells and neurogenin3(+) (Ngn3(+)) endocrine precursor cells during the first transition, but expression of HNF-1beta and either HNF-4alpha or HNF-1alpha became complementary around the end of the second transition (E15.5).
1663 17996499 In the mature pancreas, HNF-4alpha was expressed by glucagon-positive alpha-cells, insulin-positive beta-cells, somatostatin-positive delta-cells, and pancreatic polypeptide-positive PP-cells, as well as by pancreatic exocrine cells and ductal cells.
1664 17996499 Most of the HNF-4alpha(+) cells were also positive for HNF-1alpha, but HNF-4alpha expression in some non-beta-cells was remarkably high, and this was not paralleled by high HNF-1alpha expression.
1665 17996499 Expression of HNF-4alpha (MODY1), HNF-1beta (MODY5), and HNF-1alpha (MODY3) proteins in the developing mouse pancreas.
1666 17996499 The type 1, 3, and 5 forms of maturity-onset diabetes of the young (MODY) are caused by mutations of the genes encoding hepatocyte nuclear factor (HNF)-4alpha, HNF-1alpha, and HNF-1beta, respectively [Yamagata, K., Oda, N., Kaisaki, P.J., Menzel, S., Furuta, H., Vaxillaire, M., et al., 1996a.
1667 17996499 Mutation in hepatocyte nuclear factor-1beta gene (TCF2) associated with MODY.
1668 17996499 We performed an immunohistochemical study to investigate its expression in comparison with the expression of HNF-1alpha and HNF-1beta.
1669 17996499 HNF-4alpha and HNF-1beta were initially expressed by Pdx1(+) common progenitor cells and neurogenin3(+) (Ngn3(+)) endocrine precursor cells during the first transition, but expression of HNF-1beta and either HNF-4alpha or HNF-1alpha became complementary around the end of the second transition (E15.5).
1670 17996499 In the mature pancreas, HNF-4alpha was expressed by glucagon-positive alpha-cells, insulin-positive beta-cells, somatostatin-positive delta-cells, and pancreatic polypeptide-positive PP-cells, as well as by pancreatic exocrine cells and ductal cells.
1671 17996499 Most of the HNF-4alpha(+) cells were also positive for HNF-1alpha, but HNF-4alpha expression in some non-beta-cells was remarkably high, and this was not paralleled by high HNF-1alpha expression.
1672 17996499 Expression of HNF-4alpha (MODY1), HNF-1beta (MODY5), and HNF-1alpha (MODY3) proteins in the developing mouse pancreas.
1673 17996499 The type 1, 3, and 5 forms of maturity-onset diabetes of the young (MODY) are caused by mutations of the genes encoding hepatocyte nuclear factor (HNF)-4alpha, HNF-1alpha, and HNF-1beta, respectively [Yamagata, K., Oda, N., Kaisaki, P.J., Menzel, S., Furuta, H., Vaxillaire, M., et al., 1996a.
1674 17996499 Mutation in hepatocyte nuclear factor-1beta gene (TCF2) associated with MODY.
1675 17996499 We performed an immunohistochemical study to investigate its expression in comparison with the expression of HNF-1alpha and HNF-1beta.
1676 17996499 HNF-4alpha and HNF-1beta were initially expressed by Pdx1(+) common progenitor cells and neurogenin3(+) (Ngn3(+)) endocrine precursor cells during the first transition, but expression of HNF-1beta and either HNF-4alpha or HNF-1alpha became complementary around the end of the second transition (E15.5).
1677 17996499 In the mature pancreas, HNF-4alpha was expressed by glucagon-positive alpha-cells, insulin-positive beta-cells, somatostatin-positive delta-cells, and pancreatic polypeptide-positive PP-cells, as well as by pancreatic exocrine cells and ductal cells.
1678 17996499 Most of the HNF-4alpha(+) cells were also positive for HNF-1alpha, but HNF-4alpha expression in some non-beta-cells was remarkably high, and this was not paralleled by high HNF-1alpha expression.
1679 17996499 Expression of HNF-4alpha (MODY1), HNF-1beta (MODY5), and HNF-1alpha (MODY3) proteins in the developing mouse pancreas.
1680 17996499 The type 1, 3, and 5 forms of maturity-onset diabetes of the young (MODY) are caused by mutations of the genes encoding hepatocyte nuclear factor (HNF)-4alpha, HNF-1alpha, and HNF-1beta, respectively [Yamagata, K., Oda, N., Kaisaki, P.J., Menzel, S., Furuta, H., Vaxillaire, M., et al., 1996a.
1681 17996499 Mutation in hepatocyte nuclear factor-1beta gene (TCF2) associated with MODY.
1682 17996499 We performed an immunohistochemical study to investigate its expression in comparison with the expression of HNF-1alpha and HNF-1beta.
1683 17996499 HNF-4alpha and HNF-1beta were initially expressed by Pdx1(+) common progenitor cells and neurogenin3(+) (Ngn3(+)) endocrine precursor cells during the first transition, but expression of HNF-1beta and either HNF-4alpha or HNF-1alpha became complementary around the end of the second transition (E15.5).
1684 17996499 In the mature pancreas, HNF-4alpha was expressed by glucagon-positive alpha-cells, insulin-positive beta-cells, somatostatin-positive delta-cells, and pancreatic polypeptide-positive PP-cells, as well as by pancreatic exocrine cells and ductal cells.
1685 17996499 Most of the HNF-4alpha(+) cells were also positive for HNF-1alpha, but HNF-4alpha expression in some non-beta-cells was remarkably high, and this was not paralleled by high HNF-1alpha expression.
1686 17996499 Expression of HNF-4alpha (MODY1), HNF-1beta (MODY5), and HNF-1alpha (MODY3) proteins in the developing mouse pancreas.
1687 17996499 The type 1, 3, and 5 forms of maturity-onset diabetes of the young (MODY) are caused by mutations of the genes encoding hepatocyte nuclear factor (HNF)-4alpha, HNF-1alpha, and HNF-1beta, respectively [Yamagata, K., Oda, N., Kaisaki, P.J., Menzel, S., Furuta, H., Vaxillaire, M., et al., 1996a.
1688 17996499 Mutation in hepatocyte nuclear factor-1beta gene (TCF2) associated with MODY.
1689 17996499 We performed an immunohistochemical study to investigate its expression in comparison with the expression of HNF-1alpha and HNF-1beta.
1690 17996499 HNF-4alpha and HNF-1beta were initially expressed by Pdx1(+) common progenitor cells and neurogenin3(+) (Ngn3(+)) endocrine precursor cells during the first transition, but expression of HNF-1beta and either HNF-4alpha or HNF-1alpha became complementary around the end of the second transition (E15.5).
1691 17996499 In the mature pancreas, HNF-4alpha was expressed by glucagon-positive alpha-cells, insulin-positive beta-cells, somatostatin-positive delta-cells, and pancreatic polypeptide-positive PP-cells, as well as by pancreatic exocrine cells and ductal cells.
1692 17996499 Most of the HNF-4alpha(+) cells were also positive for HNF-1alpha, but HNF-4alpha expression in some non-beta-cells was remarkably high, and this was not paralleled by high HNF-1alpha expression.
1693 17996499 Expression of HNF-4alpha (MODY1), HNF-1beta (MODY5), and HNF-1alpha (MODY3) proteins in the developing mouse pancreas.
1694 17996499 The type 1, 3, and 5 forms of maturity-onset diabetes of the young (MODY) are caused by mutations of the genes encoding hepatocyte nuclear factor (HNF)-4alpha, HNF-1alpha, and HNF-1beta, respectively [Yamagata, K., Oda, N., Kaisaki, P.J., Menzel, S., Furuta, H., Vaxillaire, M., et al., 1996a.
1695 17996499 Mutation in hepatocyte nuclear factor-1beta gene (TCF2) associated with MODY.
1696 17996499 We performed an immunohistochemical study to investigate its expression in comparison with the expression of HNF-1alpha and HNF-1beta.
1697 17996499 HNF-4alpha and HNF-1beta were initially expressed by Pdx1(+) common progenitor cells and neurogenin3(+) (Ngn3(+)) endocrine precursor cells during the first transition, but expression of HNF-1beta and either HNF-4alpha or HNF-1alpha became complementary around the end of the second transition (E15.5).
1698 17996499 In the mature pancreas, HNF-4alpha was expressed by glucagon-positive alpha-cells, insulin-positive beta-cells, somatostatin-positive delta-cells, and pancreatic polypeptide-positive PP-cells, as well as by pancreatic exocrine cells and ductal cells.
1699 17996499 Most of the HNF-4alpha(+) cells were also positive for HNF-1alpha, but HNF-4alpha expression in some non-beta-cells was remarkably high, and this was not paralleled by high HNF-1alpha expression.
1700 18058600 Since duct cells are thought to be precursors of endocrine cells and HNF-6 is involved in the regulation of the expression of HNF-4alpha and -1beta, genes that cause maturity onset diabetes of the young (MODY), we hypothesized that the sustained expression of HNF-6 would affect beta-cell function.
1701 18058600 We generated transgenic mice over-expressing human HNF-6 using the mouse insulin I promoter (MIP).
1702 18162503 Evidence of interaction between PPARG2 and HNF4A contributing to variation in insulin sensitivity in Mexican Americans.
1703 18192540 Mutations in the insulin gene can cause MODY and autoantibody-negative type 1 diabetes.
1704 18221440 We report an interesting and unique case of an overweight adolescent with a novel mutation of the maturity-onset diabetes of the young (MODY)3 gene [hepatocyte nuclear factor-1 alpha (HNF-1alpha)] and positive islet cell autoantibodies.
1705 18221440 Initial hemoglobin A1c was 11.9%, with fasting glucose of 234 mg/dL and fasting insulin 10.7 microU/mL.
1706 18391435 Crystallization of hepatocyte nuclear factor 4 alpha (HNF4 alpha) in complex with the HNF1 alpha promoter element.
1707 18391435 In order to understand the molecular mechanism of promoter recognition and the molecular basis of disease-causing mutations, the recombinant HNF4alpha DNA-binding domain was prepared and used in a study of its binding properties and in crystallization with a 21-mer DNA fragment that contains the promoter element of another MODY gene, HNF1alpha.
1708 18391435 Crystallization of hepatocyte nuclear factor 4 alpha (HNF4 alpha) in complex with the HNF1 alpha promoter element.
1709 18391435 In order to understand the molecular mechanism of promoter recognition and the molecular basis of disease-causing mutations, the recombinant HNF4alpha DNA-binding domain was prepared and used in a study of its binding properties and in crystallization with a 21-mer DNA fragment that contains the promoter element of another MODY gene, HNF1alpha.
1710 18436708 Most valuable breakthroughs in the genetics of type 2 diabetes for the past two decades have arisen from candidate gene studies and familial linkage analysis of maturity-onset diabetes of the young (MODY), an autosomal dominant form of diabetes typically occurring before 25 years of age caused by primary insulin secretion defects.
1711 18436708 MODY can result from mutations in at least six different genes encoding the glucose sensor enzyme glucokinase and transcription factors that participate in a regulatory network essential for adult beta-cell function.
1712 18436708 Most valuable breakthroughs in the genetics of type 2 diabetes for the past two decades have arisen from candidate gene studies and familial linkage analysis of maturity-onset diabetes of the young (MODY), an autosomal dominant form of diabetes typically occurring before 25 years of age caused by primary insulin secretion defects.
1713 18436708 MODY can result from mutations in at least six different genes encoding the glucose sensor enzyme glucokinase and transcription factors that participate in a regulatory network essential for adult beta-cell function.
1714 18474611 The MODY1 gene for hepatocyte nuclear factor 4alpha and a feedback loop control COUP-TFII expression in pancreatic beta cells.
1715 18474611 Knockout mice with the heterozygous deletion of the gene for chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) or the complete disruption of the gene for hepatocyte nuclear factor 4alpha (HNF4alpha) in pancreatic beta cells have similar insulin secretion defects, leading us to hypothesize that there is transcriptional cross talk between these two nuclear receptors.
1716 18474611 Here, we demonstrate specific HNF4alpha activation of a reporter plasmid containing the COUP-TFII gene promoter region in transfected pancreatic beta cells.
1717 18474611 The stable association of the endogenous HNF4alpha with a region of the COUP-TFII gene promoter that contains a direct repeat 1 (DR-1) binding site was revealed by chromatin immunoprecipitation.
1718 18474611 Mutation experiments showed that this DR-1 site is essential for HNF4alpha transactivation of COUP-TFII.
1719 18474611 The dominant negative suppression of HNF4alpha function decreased endogenous COUP-TFII expression, and the specific inactivation of COUP-TFII by small interfering RNA caused HNF4alpha mRNA levels in 832/13 INS-1 cells to decrease.
1720 18474611 This positive regulation of HNF4alpha by COUP-TFII was confirmed by the adenovirus-mediated overexpression of human COUP-TFII (hCOUP-TFII), which increased HNF4alpha mRNA levels in 832/13 INS-1 cells and in mouse pancreatic islets.
1721 18474611 Finally, hCOUP-TFII overexpression showed that there is direct COUP-TFII autorepression, as COUP-TFII occupies the proximal DR-1 binding site of its own gene in vivo.
1722 18474611 Therefore, COUP-TFII may contribute to the control of insulin secretion through the complex HNF4alpha/maturity-onset diabetes of the young 1 (MODY1) transcription factor network operating in beta cells.
1723 18474611 The MODY1 gene for hepatocyte nuclear factor 4alpha and a feedback loop control COUP-TFII expression in pancreatic beta cells.
1724 18474611 Knockout mice with the heterozygous deletion of the gene for chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) or the complete disruption of the gene for hepatocyte nuclear factor 4alpha (HNF4alpha) in pancreatic beta cells have similar insulin secretion defects, leading us to hypothesize that there is transcriptional cross talk between these two nuclear receptors.
1725 18474611 Here, we demonstrate specific HNF4alpha activation of a reporter plasmid containing the COUP-TFII gene promoter region in transfected pancreatic beta cells.
1726 18474611 The stable association of the endogenous HNF4alpha with a region of the COUP-TFII gene promoter that contains a direct repeat 1 (DR-1) binding site was revealed by chromatin immunoprecipitation.
1727 18474611 Mutation experiments showed that this DR-1 site is essential for HNF4alpha transactivation of COUP-TFII.
1728 18474611 The dominant negative suppression of HNF4alpha function decreased endogenous COUP-TFII expression, and the specific inactivation of COUP-TFII by small interfering RNA caused HNF4alpha mRNA levels in 832/13 INS-1 cells to decrease.
1729 18474611 This positive regulation of HNF4alpha by COUP-TFII was confirmed by the adenovirus-mediated overexpression of human COUP-TFII (hCOUP-TFII), which increased HNF4alpha mRNA levels in 832/13 INS-1 cells and in mouse pancreatic islets.
1730 18474611 Finally, hCOUP-TFII overexpression showed that there is direct COUP-TFII autorepression, as COUP-TFII occupies the proximal DR-1 binding site of its own gene in vivo.
1731 18474611 Therefore, COUP-TFII may contribute to the control of insulin secretion through the complex HNF4alpha/maturity-onset diabetes of the young 1 (MODY1) transcription factor network operating in beta cells.
1732 18474611 The MODY1 gene for hepatocyte nuclear factor 4alpha and a feedback loop control COUP-TFII expression in pancreatic beta cells.
1733 18474611 Knockout mice with the heterozygous deletion of the gene for chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) or the complete disruption of the gene for hepatocyte nuclear factor 4alpha (HNF4alpha) in pancreatic beta cells have similar insulin secretion defects, leading us to hypothesize that there is transcriptional cross talk between these two nuclear receptors.
1734 18474611 Here, we demonstrate specific HNF4alpha activation of a reporter plasmid containing the COUP-TFII gene promoter region in transfected pancreatic beta cells.
1735 18474611 The stable association of the endogenous HNF4alpha with a region of the COUP-TFII gene promoter that contains a direct repeat 1 (DR-1) binding site was revealed by chromatin immunoprecipitation.
1736 18474611 Mutation experiments showed that this DR-1 site is essential for HNF4alpha transactivation of COUP-TFII.
1737 18474611 The dominant negative suppression of HNF4alpha function decreased endogenous COUP-TFII expression, and the specific inactivation of COUP-TFII by small interfering RNA caused HNF4alpha mRNA levels in 832/13 INS-1 cells to decrease.
1738 18474611 This positive regulation of HNF4alpha by COUP-TFII was confirmed by the adenovirus-mediated overexpression of human COUP-TFII (hCOUP-TFII), which increased HNF4alpha mRNA levels in 832/13 INS-1 cells and in mouse pancreatic islets.
1739 18474611 Finally, hCOUP-TFII overexpression showed that there is direct COUP-TFII autorepression, as COUP-TFII occupies the proximal DR-1 binding site of its own gene in vivo.
1740 18474611 Therefore, COUP-TFII may contribute to the control of insulin secretion through the complex HNF4alpha/maturity-onset diabetes of the young 1 (MODY1) transcription factor network operating in beta cells.
1741 18474611 The MODY1 gene for hepatocyte nuclear factor 4alpha and a feedback loop control COUP-TFII expression in pancreatic beta cells.
1742 18474611 Knockout mice with the heterozygous deletion of the gene for chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) or the complete disruption of the gene for hepatocyte nuclear factor 4alpha (HNF4alpha) in pancreatic beta cells have similar insulin secretion defects, leading us to hypothesize that there is transcriptional cross talk between these two nuclear receptors.
1743 18474611 Here, we demonstrate specific HNF4alpha activation of a reporter plasmid containing the COUP-TFII gene promoter region in transfected pancreatic beta cells.
1744 18474611 The stable association of the endogenous HNF4alpha with a region of the COUP-TFII gene promoter that contains a direct repeat 1 (DR-1) binding site was revealed by chromatin immunoprecipitation.
1745 18474611 Mutation experiments showed that this DR-1 site is essential for HNF4alpha transactivation of COUP-TFII.
1746 18474611 The dominant negative suppression of HNF4alpha function decreased endogenous COUP-TFII expression, and the specific inactivation of COUP-TFII by small interfering RNA caused HNF4alpha mRNA levels in 832/13 INS-1 cells to decrease.
1747 18474611 This positive regulation of HNF4alpha by COUP-TFII was confirmed by the adenovirus-mediated overexpression of human COUP-TFII (hCOUP-TFII), which increased HNF4alpha mRNA levels in 832/13 INS-1 cells and in mouse pancreatic islets.
1748 18474611 Finally, hCOUP-TFII overexpression showed that there is direct COUP-TFII autorepression, as COUP-TFII occupies the proximal DR-1 binding site of its own gene in vivo.
1749 18474611 Therefore, COUP-TFII may contribute to the control of insulin secretion through the complex HNF4alpha/maturity-onset diabetes of the young 1 (MODY1) transcription factor network operating in beta cells.
1750 18474611 The MODY1 gene for hepatocyte nuclear factor 4alpha and a feedback loop control COUP-TFII expression in pancreatic beta cells.
1751 18474611 Knockout mice with the heterozygous deletion of the gene for chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) or the complete disruption of the gene for hepatocyte nuclear factor 4alpha (HNF4alpha) in pancreatic beta cells have similar insulin secretion defects, leading us to hypothesize that there is transcriptional cross talk between these two nuclear receptors.
1752 18474611 Here, we demonstrate specific HNF4alpha activation of a reporter plasmid containing the COUP-TFII gene promoter region in transfected pancreatic beta cells.
1753 18474611 The stable association of the endogenous HNF4alpha with a region of the COUP-TFII gene promoter that contains a direct repeat 1 (DR-1) binding site was revealed by chromatin immunoprecipitation.
1754 18474611 Mutation experiments showed that this DR-1 site is essential for HNF4alpha transactivation of COUP-TFII.
1755 18474611 The dominant negative suppression of HNF4alpha function decreased endogenous COUP-TFII expression, and the specific inactivation of COUP-TFII by small interfering RNA caused HNF4alpha mRNA levels in 832/13 INS-1 cells to decrease.
1756 18474611 This positive regulation of HNF4alpha by COUP-TFII was confirmed by the adenovirus-mediated overexpression of human COUP-TFII (hCOUP-TFII), which increased HNF4alpha mRNA levels in 832/13 INS-1 cells and in mouse pancreatic islets.
1757 18474611 Finally, hCOUP-TFII overexpression showed that there is direct COUP-TFII autorepression, as COUP-TFII occupies the proximal DR-1 binding site of its own gene in vivo.
1758 18474611 Therefore, COUP-TFII may contribute to the control of insulin secretion through the complex HNF4alpha/maturity-onset diabetes of the young 1 (MODY1) transcription factor network operating in beta cells.
1759 18474611 The MODY1 gene for hepatocyte nuclear factor 4alpha and a feedback loop control COUP-TFII expression in pancreatic beta cells.
1760 18474611 Knockout mice with the heterozygous deletion of the gene for chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) or the complete disruption of the gene for hepatocyte nuclear factor 4alpha (HNF4alpha) in pancreatic beta cells have similar insulin secretion defects, leading us to hypothesize that there is transcriptional cross talk between these two nuclear receptors.
1761 18474611 Here, we demonstrate specific HNF4alpha activation of a reporter plasmid containing the COUP-TFII gene promoter region in transfected pancreatic beta cells.
1762 18474611 The stable association of the endogenous HNF4alpha with a region of the COUP-TFII gene promoter that contains a direct repeat 1 (DR-1) binding site was revealed by chromatin immunoprecipitation.
1763 18474611 Mutation experiments showed that this DR-1 site is essential for HNF4alpha transactivation of COUP-TFII.
1764 18474611 The dominant negative suppression of HNF4alpha function decreased endogenous COUP-TFII expression, and the specific inactivation of COUP-TFII by small interfering RNA caused HNF4alpha mRNA levels in 832/13 INS-1 cells to decrease.
1765 18474611 This positive regulation of HNF4alpha by COUP-TFII was confirmed by the adenovirus-mediated overexpression of human COUP-TFII (hCOUP-TFII), which increased HNF4alpha mRNA levels in 832/13 INS-1 cells and in mouse pancreatic islets.
1766 18474611 Finally, hCOUP-TFII overexpression showed that there is direct COUP-TFII autorepression, as COUP-TFII occupies the proximal DR-1 binding site of its own gene in vivo.
1767 18474611 Therefore, COUP-TFII may contribute to the control of insulin secretion through the complex HNF4alpha/maturity-onset diabetes of the young 1 (MODY1) transcription factor network operating in beta cells.
1768 18474611 The MODY1 gene for hepatocyte nuclear factor 4alpha and a feedback loop control COUP-TFII expression in pancreatic beta cells.
1769 18474611 Knockout mice with the heterozygous deletion of the gene for chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) or the complete disruption of the gene for hepatocyte nuclear factor 4alpha (HNF4alpha) in pancreatic beta cells have similar insulin secretion defects, leading us to hypothesize that there is transcriptional cross talk between these two nuclear receptors.
1770 18474611 Here, we demonstrate specific HNF4alpha activation of a reporter plasmid containing the COUP-TFII gene promoter region in transfected pancreatic beta cells.
1771 18474611 The stable association of the endogenous HNF4alpha with a region of the COUP-TFII gene promoter that contains a direct repeat 1 (DR-1) binding site was revealed by chromatin immunoprecipitation.
1772 18474611 Mutation experiments showed that this DR-1 site is essential for HNF4alpha transactivation of COUP-TFII.
1773 18474611 The dominant negative suppression of HNF4alpha function decreased endogenous COUP-TFII expression, and the specific inactivation of COUP-TFII by small interfering RNA caused HNF4alpha mRNA levels in 832/13 INS-1 cells to decrease.
1774 18474611 This positive regulation of HNF4alpha by COUP-TFII was confirmed by the adenovirus-mediated overexpression of human COUP-TFII (hCOUP-TFII), which increased HNF4alpha mRNA levels in 832/13 INS-1 cells and in mouse pancreatic islets.
1775 18474611 Finally, hCOUP-TFII overexpression showed that there is direct COUP-TFII autorepression, as COUP-TFII occupies the proximal DR-1 binding site of its own gene in vivo.
1776 18474611 Therefore, COUP-TFII may contribute to the control of insulin secretion through the complex HNF4alpha/maturity-onset diabetes of the young 1 (MODY1) transcription factor network operating in beta cells.
1777 18474611 The MODY1 gene for hepatocyte nuclear factor 4alpha and a feedback loop control COUP-TFII expression in pancreatic beta cells.
1778 18474611 Knockout mice with the heterozygous deletion of the gene for chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) or the complete disruption of the gene for hepatocyte nuclear factor 4alpha (HNF4alpha) in pancreatic beta cells have similar insulin secretion defects, leading us to hypothesize that there is transcriptional cross talk between these two nuclear receptors.
1779 18474611 Here, we demonstrate specific HNF4alpha activation of a reporter plasmid containing the COUP-TFII gene promoter region in transfected pancreatic beta cells.
1780 18474611 The stable association of the endogenous HNF4alpha with a region of the COUP-TFII gene promoter that contains a direct repeat 1 (DR-1) binding site was revealed by chromatin immunoprecipitation.
1781 18474611 Mutation experiments showed that this DR-1 site is essential for HNF4alpha transactivation of COUP-TFII.
1782 18474611 The dominant negative suppression of HNF4alpha function decreased endogenous COUP-TFII expression, and the specific inactivation of COUP-TFII by small interfering RNA caused HNF4alpha mRNA levels in 832/13 INS-1 cells to decrease.
1783 18474611 This positive regulation of HNF4alpha by COUP-TFII was confirmed by the adenovirus-mediated overexpression of human COUP-TFII (hCOUP-TFII), which increased HNF4alpha mRNA levels in 832/13 INS-1 cells and in mouse pancreatic islets.
1784 18474611 Finally, hCOUP-TFII overexpression showed that there is direct COUP-TFII autorepression, as COUP-TFII occupies the proximal DR-1 binding site of its own gene in vivo.
1785 18474611 Therefore, COUP-TFII may contribute to the control of insulin secretion through the complex HNF4alpha/maturity-onset diabetes of the young 1 (MODY1) transcription factor network operating in beta cells.
1786 18501722 Further, a moderate improvement of dyslipidemia by metformin was reported, and therefore, the effect of metformin on the release of apolipoprotein B (ApoB) and ApoE in primary human hepatocytes was determined.
1787 18501722 Metformin at 0.5 and 1 mM reduced hepatic ApoB secretion but ApoE was not altered.
1788 18501722 Metformin is well known to stimulate the AMP kinase that subsequently reduces hepatic nuclear factor 4-alpha (HNF4-alpha) and HNF4-alpha regulated genes like ApoB.
1789 18501722 However, HNF4-alpha was only diminished by 1 mM metformin and ApoB mRNA was not suppressed indicating that this pathway may not explain reduced ApoB release.
1790 18501722 Further, a moderate improvement of dyslipidemia by metformin was reported, and therefore, the effect of metformin on the release of apolipoprotein B (ApoB) and ApoE in primary human hepatocytes was determined.
1791 18501722 Metformin at 0.5 and 1 mM reduced hepatic ApoB secretion but ApoE was not altered.
1792 18501722 Metformin is well known to stimulate the AMP kinase that subsequently reduces hepatic nuclear factor 4-alpha (HNF4-alpha) and HNF4-alpha regulated genes like ApoB.
1793 18501722 However, HNF4-alpha was only diminished by 1 mM metformin and ApoB mRNA was not suppressed indicating that this pathway may not explain reduced ApoB release.
1794 18504548 It has also led to the identification of common risk variants via candidate gene approaches (e.g. the E23K polymorphism in KCNJ11 or common variants in the MODY genes), and it has been validated by the description of the robust physiological effects conferred by polymorphisms in the TCF7L2 gene.
1795 18511845 TGFbeta1, TNFalpha, and insulin signaling crosstalk in regulation of the rat cholesterol 7alpha-hydroxylase gene expression.
1796 18511845 Previous studies show that TGFbeta1, TNFalpha, and insulin inhibit cholesterol 7alpha-hydroxylase (CYP7A1) gene transcription and bile acid synthesis in human hepatocytes.
1797 18511845 In this study, we investigated insulin, TGFbeta1, and TNFalpha regulation of rat Cyp7a1 gene transcription.
1798 18511845 Smad3, FoxO1, and HNF4alpha synergistically stimulated rat Cyp7a1 gene transcription.
1799 18511845 Mutations of the Smad3, FoxO1, or HNF4alpha binding site attenuated the rat Cyp7a1 promoter activity.
1800 18511845 Furthermore, TNFalpha and cJun attenuated TGFbeta1 stimulation of rat Cyp7a1.
1801 18511845 Insulin or adenovirus-mediated expression of constitutively active AKT1 inhibited FoxO1 and Smad3 synergy.
1802 18511845 In streptozotocin-induced diabetic rats, Cyp7a1 mRNA expression levels were induced and insulin attenuated CYP7A1 mRNA levels.
1803 18511845 Chromatin immunoprecipitation assay showed that FoxO1 binding to Cyp7a1 chromatin was increased in diabetic rat livers and insulin reduced FoxO1 binding.
1804 18511845 The crosstalk of insulin, TGFbeta and TNFalpha signaling pathways may regulate bile acid synthesis and lipid homeostasis in diabetes, fatty liver disease, and liver fibrosis.
1805 18511845 TGFbeta1, TNFalpha, and insulin signaling crosstalk in regulation of the rat cholesterol 7alpha-hydroxylase gene expression.
1806 18511845 Previous studies show that TGFbeta1, TNFalpha, and insulin inhibit cholesterol 7alpha-hydroxylase (CYP7A1) gene transcription and bile acid synthesis in human hepatocytes.
1807 18511845 In this study, we investigated insulin, TGFbeta1, and TNFalpha regulation of rat Cyp7a1 gene transcription.
1808 18511845 Smad3, FoxO1, and HNF4alpha synergistically stimulated rat Cyp7a1 gene transcription.
1809 18511845 Mutations of the Smad3, FoxO1, or HNF4alpha binding site attenuated the rat Cyp7a1 promoter activity.
1810 18511845 Furthermore, TNFalpha and cJun attenuated TGFbeta1 stimulation of rat Cyp7a1.
1811 18511845 Insulin or adenovirus-mediated expression of constitutively active AKT1 inhibited FoxO1 and Smad3 synergy.
1812 18511845 In streptozotocin-induced diabetic rats, Cyp7a1 mRNA expression levels were induced and insulin attenuated CYP7A1 mRNA levels.
1813 18511845 Chromatin immunoprecipitation assay showed that FoxO1 binding to Cyp7a1 chromatin was increased in diabetic rat livers and insulin reduced FoxO1 binding.
1814 18511845 The crosstalk of insulin, TGFbeta and TNFalpha signaling pathways may regulate bile acid synthesis and lipid homeostasis in diabetes, fatty liver disease, and liver fibrosis.
1815 18599616 As a component of the bipartite transcription factor beta-catenin/TCF, TCF7L2 is important in conveying Wnt signaling during embryonic development and in regulating gene expression during adulthood.
1816 18599616 Although we still do not know mechanistically how the polymorphisms within the intron regions of TCF7L2 affect the risk of type 2 diabetes, this transcriptional regulator was shown to be involved in stimulating the proliferation of pancreatic beta-cells and the production of the incretin hormone glucagon-like peptide-1 in intestinal endocrine L cells.
1817 18602936 The xenobiotic-metabolizing cytochrome P450 (CYP) 2A5 enzyme has been shown to be induced by fasting and by glucagon and cyclic AMP (cAMP), which mediate numerous fasting responses.
1818 18602936 Chromatin immunoprecipitation assays showed that PGC-1alpha binds, together with HNF-4alpha, to the same region at the Cyp2a5 proximal promoter.
1819 18602936 In conclusion, PGC-1alpha mediates the expression of Cyp2a5 induced by cAMP in mouse hepatocytes through coactivation of transcription factor HNF-4alpha.
1820 18602936 The xenobiotic-metabolizing cytochrome P450 (CYP) 2A5 enzyme has been shown to be induced by fasting and by glucagon and cyclic AMP (cAMP), which mediate numerous fasting responses.
1821 18602936 Chromatin immunoprecipitation assays showed that PGC-1alpha binds, together with HNF-4alpha, to the same region at the Cyp2a5 proximal promoter.
1822 18602936 In conclusion, PGC-1alpha mediates the expression of Cyp2a5 induced by cAMP in mouse hepatocytes through coactivation of transcription factor HNF-4alpha.
1823 18602983 The most significant SNPs were found in the perigenic regions: HNF4A (hepatocyte nuclear factor 4alpha), SLC12A5 (potassium-chloride cotransporter member 5), CDH22 (cadherin-like 22), ELMO2 (engulfment and cell motility 2), SLC13A3 (sodium-dependent dicarboxylate transporter member 3), and PREX1 (phosphatidylinositol 3,4,5-triphosphate-dependent RAC exchanger 1).
1824 18602983 We replicated the PREX1 SNP association in an independent case-control T2DM population and inferred replication of CDH22, ELMO2, SLC13A3, SLC12A5, and PREX1 using in silico perigenic analysis of two T2DM Genome-Wide Association Study data sets.
1825 18696049 The major effector of the canonical WNT signalling pathway is the bipartite transcription factor beta-catenin/T cell transcription factor (beta-cat/TCF), formed by free beta-cat and one of the four TCFs.
1826 18696049 The WNT pathway is involved in lipid metabolism and glucose homeostasis, and mutations in LRP5 may lead to the development of diabetes and obesity. beta-Cat/TCF is also involved in the production of the incretin hormone glucagon-like peptide-1 in the intestinal endocrine L cells.
1827 18696049 The major effector of the canonical WNT signalling pathway is the bipartite transcription factor beta-catenin/T cell transcription factor (beta-cat/TCF), formed by free beta-cat and one of the four TCFs.
1828 18696049 The WNT pathway is involved in lipid metabolism and glucose homeostasis, and mutations in LRP5 may lead to the development of diabetes and obesity. beta-Cat/TCF is also involved in the production of the incretin hormone glucagon-like peptide-1 in the intestinal endocrine L cells.
1829 18829458 We describe here the 2.0 angstroms crystal structure of human HNF4alpha DNA binding domain in complex with a high affinity promoter element of another MODY gene, HNF1alpha, which reveals the molecular basis of unique target gene selection/recognition, DNA binding cooperativity, and dysfunction caused by diabetes-causing mutations.
1830 18838325 Molecular background and clinical characteristics of HNF1A MODY in a Polish population.
1831 19169489 HNF1alpha mutations are present in half of clinically defined MODY patients in South-Brazilian individuals.
1832 19169489 In the present study we investigated the relative prevalence of GCK (glucokinase) and HNF1alpha (hepatocyte nuclear factor 1alpha) mutations, the more frequent causes of MODY, in 13 South-Brazilian families with multiple cases of diabetes consistent with MODY.
1833 19169489 Heterozygous variants in GCK and HNF1alpha genes were observed respectively in one (7.7%), and six (46.2%) families.
1834 19169489 HNF1alpha mutations are present in half of clinically defined MODY patients in South-Brazilian individuals.
1835 19169489 In the present study we investigated the relative prevalence of GCK (glucokinase) and HNF1alpha (hepatocyte nuclear factor 1alpha) mutations, the more frequent causes of MODY, in 13 South-Brazilian families with multiple cases of diabetes consistent with MODY.
1836 19169489 Heterozygous variants in GCK and HNF1alpha genes were observed respectively in one (7.7%), and six (46.2%) families.
1837 19179483 Here, we examine the expression of hepatic HNF4alpha in two diabetic mouse models, db/db mice (type 2, insulin resistant) and streptozotocin-treated mice (type 1, insulin deficient).
1838 19179483 Because insulin increases the activity of sterol regulatory element-binding proteins (SREBP)-1c and -2, we also examined the effect of SREBPs on hepatic HNF4alpha gene expression and found that, like insulin, ectopic expression of SREBPs decreases the level of hepatic HNF4alpha protein and mRNA both in vitro in primary hepatocytes and in vivo in the liver of C57BL/6 mice.
1839 19179483 Finally, we use gel shift, chromatin immunoprecipitation, small interfering RNA, and reporter gene analysis to show that SREBP2 binds the human HNF4alpha P1 promoter and negatively regulates its expression.
1840 19179483 Here, we examine the expression of hepatic HNF4alpha in two diabetic mouse models, db/db mice (type 2, insulin resistant) and streptozotocin-treated mice (type 1, insulin deficient).
1841 19179483 Because insulin increases the activity of sterol regulatory element-binding proteins (SREBP)-1c and -2, we also examined the effect of SREBPs on hepatic HNF4alpha gene expression and found that, like insulin, ectopic expression of SREBPs decreases the level of hepatic HNF4alpha protein and mRNA both in vitro in primary hepatocytes and in vivo in the liver of C57BL/6 mice.
1842 19179483 Finally, we use gel shift, chromatin immunoprecipitation, small interfering RNA, and reporter gene analysis to show that SREBP2 binds the human HNF4alpha P1 promoter and negatively regulates its expression.
1843 19179483 Here, we examine the expression of hepatic HNF4alpha in two diabetic mouse models, db/db mice (type 2, insulin resistant) and streptozotocin-treated mice (type 1, insulin deficient).
1844 19179483 Because insulin increases the activity of sterol regulatory element-binding proteins (SREBP)-1c and -2, we also examined the effect of SREBPs on hepatic HNF4alpha gene expression and found that, like insulin, ectopic expression of SREBPs decreases the level of hepatic HNF4alpha protein and mRNA both in vitro in primary hepatocytes and in vivo in the liver of C57BL/6 mice.
1845 19179483 Finally, we use gel shift, chromatin immunoprecipitation, small interfering RNA, and reporter gene analysis to show that SREBP2 binds the human HNF4alpha P1 promoter and negatively regulates its expression.
1846 19188435 Functional targets of the monogenic diabetes transcription factors HNF-1alpha and HNF-4alpha are highly conserved between mice and humans.
1847 19213833 The expression of GPR39 is regulated by hepatocyte nuclear factor (HNF)-1alpha and HNF-4alpha, and in the present study, we addressed the importance of GPR39 for glucose homeostasis and pancreatic islets function.
1848 19213833 Gpr39(-/-) mice were studied in vivo, especially in respect of glucose tolerance and insulin sensitivity, and in vitro in respect of islet architecture, gene expression, and insulin secretion.
1849 19213833 Gpr39 was down-regulated on differentiation of the pluripotent pancreatic cell line AR42J cells toward the exocrine phenotype but was along with Pdx-1 strongly up-regulated on differentiation toward the endocrine phenotype.
1850 19213833 Gpr39(-/-) mice displayed normal insulin sensitivity but moderately impaired glucose tolerance both during oral and iv glucose tolerance tests, and Gpr39(-/-) mice had decreased plasma insulin response to oral glucose.
1851 19213833 Islet architecture was normal in the Gpr39 null mice, but expression of Pdx-1 and Hnf-1alpha was reduced.
1852 19213833 Isolated, perifused islets from Gpr39 null mice secreted less insulin in response to glucose stimulation than islets from wild-type littermates.
1853 19239393 Human HNF4alpha gene mutations cause maturity on-set diabetes of the young type 1, an autosomal dominant non-insulin-dependent diabetes mellitus.
1854 19239393 HNF4alpha is an orphan nuclear receptor because of which the endogenous ligand has not been firmly identified.
1855 19239393 Human HNF4alpha gene mutations cause maturity on-set diabetes of the young type 1, an autosomal dominant non-insulin-dependent diabetes mellitus.
1856 19239393 HNF4alpha is an orphan nuclear receptor because of which the endogenous ligand has not been firmly identified.
1857 19252740 HNF4alpha and HNF1alpha dysfunction as a molecular rational for cyclosporine induced posttransplantation diabetes mellitus.
1858 19252740 Furthermore, cyclosporine treatment of the insulinoma-1E cell line resulted in remarkable reduction in HNF4alpha protein and INS1 as well as INS2 gene expression, while transcript expression of HNF4alpha, apolipoprotein C2, glycerolkinase, pyruvatekinase and aldolase B was repressed in treated Caco-2 cells.
1859 19252740 HNF4alpha and HNF1alpha dysfunction as a molecular rational for cyclosporine induced posttransplantation diabetes mellitus.
1860 19252740 Furthermore, cyclosporine treatment of the insulinoma-1E cell line resulted in remarkable reduction in HNF4alpha protein and INS1 as well as INS2 gene expression, while transcript expression of HNF4alpha, apolipoprotein C2, glycerolkinase, pyruvatekinase and aldolase B was repressed in treated Caco-2 cells.
1861 19336222 A novel frameshift mutation attributable to 14-nucleotide insertion in hepatocyte nuclear factor-1alpha (HNF-1alpha) encoding a truncated HNF-1alpha (G554fsX556) with 76-amino acid deletion at its carboxyl terminus was identified in a Thai family with maturity-onset diabetes of the young (MODY).
1862 19336222 The wild-type and mutant HNF-1alpha could similarly bind to human glucose-transporter 2 (GLUT2) promoter examined by electrophoretic mobility shift assay (EMSA).
1863 19336222 However, the transactivation activities of mutant HNF-1alpha on human GLUT2 and rat L-type pyruvate kinase (L-PK) promoters in HeLa cells determined by luciferase reporter assay were reduced to approximately 55-60% of the wild-type protein.
1864 19336222 These results suggested that the functional defect of novel truncated HNF-1alpha (G554fsX556) on the transactivation of its target-gene promoters would account for the beta-cell dysfunction associated with the pathogenesis of MODY.
1865 19336222 A novel frameshift mutation attributable to 14-nucleotide insertion in hepatocyte nuclear factor-1alpha (HNF-1alpha) encoding a truncated HNF-1alpha (G554fsX556) with 76-amino acid deletion at its carboxyl terminus was identified in a Thai family with maturity-onset diabetes of the young (MODY).
1866 19336222 The wild-type and mutant HNF-1alpha could similarly bind to human glucose-transporter 2 (GLUT2) promoter examined by electrophoretic mobility shift assay (EMSA).
1867 19336222 However, the transactivation activities of mutant HNF-1alpha on human GLUT2 and rat L-type pyruvate kinase (L-PK) promoters in HeLa cells determined by luciferase reporter assay were reduced to approximately 55-60% of the wild-type protein.
1868 19336222 These results suggested that the functional defect of novel truncated HNF-1alpha (G554fsX556) on the transactivation of its target-gene promoters would account for the beta-cell dysfunction associated with the pathogenesis of MODY.
1869 19565026 Subtypes HNF1A and HNF4A are sensitive to sulfonylureas, however diabetes complications are common if not treated early.
1870 19669260 An HNF1alpha germline mutation is observed in less than 5% of HCA cases and can be associated with MODY 3 diabetes. (2) An activating beta-catenin mutation was found in 10% of HCA.
1871 19669260 These beta-catenin activated HCAs are observed in men and women, and specific risk factors, such as male hormone administration or glycogenosis, are associated with their development.
1872 19669260 Immunohistochemistry studies show that these HCAs overexpress beta-catenin (nuclear and cytoplasmic) and glutamine synthetase.
1873 19669260 They express serum amyloid A and C-reactive protein.
1874 19669260 An additional 10% of inflammatory HCAs express beta-catenin, and are also at risk of malignant transformation. (4) Currently, less than 10% of HCAs are unclassified.
1875 19906834 Visfatin regulates insulin secretion, insulin receptor signalling and mRNA expression of diabetes-related genes in mouse pancreatic beta-cells.
1876 19906834 This study investigated the effects of visfatin upon insulin secretion, insulin receptor activation and mRNA expression of key diabetes-related genes in clonal mouse pancreatic beta-cells. beta-TC6 cells were cultured in RPMI 1640 and were subsequently treated with recombinant visfatin.
1877 19906834 Incubation with visfatin caused significant changes in the mRNA expression of several key diabetes-related genes, including marked up-regulation of insulin (9-fold increase), hepatocyte nuclear factor (HNF)1beta (32-fold increase), HNF4alpha (16-fold increase) and nuclear factor kappaB (40-fold increase).
1878 19906834 Significant down-regulation was seen in angiotensin-converting enzyme (-3.73-fold) and UCP2 (-1.3-fold).
1879 19906834 Visfatin also caused a significant 46% increase in insulin secretion compared to control (P<0.003) at low glucose, and this increase was blocked by co-incubation with the specific nicotinamide phosphoribosyltransferase inhibitor FK866.
1880 19906834 Both visfatin and nicotinamide mononucleotide induced activation of both insulin receptor and extracellular signal-regulated kinase (ERK)1/2, with visfatin-induced insulin receptor/ERK1/2 activation being inhibited by FK866.
1881 19906834 We conclude that visfatin can significantly regulate insulin secretion, insulin receptor phosphorylation and intracellular signalling and the expression of a number of beta-cell function-associated genes in mouse beta-cells.
1882 20079163 Effect of genetic variants in KCNJ11, ABCC8, PPARG and HNF4A loci on the susceptibility of type 2 diabetes in Chinese Han population.
1883 20300478 PPAR/RXR Regulation of Fatty Acid Metabolism and Fatty Acid omega-Hydroxylase (CYP4) Isozymes: Implications for Prevention of Lipotoxicity in Fatty Liver Disease.
1884 20300478 How steatosis increases PPARalpha activated gene expression of fatty acid transport proteins, peroxisomal and mitochondrial fatty acid beta-oxidation and omega-oxidation of fatty acids genes regardless of whether dietary fatty acids are polyunsaturated (PUFA), monounsaturated (MUFA), or saturated (SFA) may be determined by the interplay of PPARs and HNF4alpha with the fatty acid transport proteins L-FABP and ACBP.
1885 20300478 In hepatic steatosis and steatohepatitis, the omega-oxidation cytochrome P450 CYP4A gene expression is increased even with reduced hepatic levels of PPARalpha.
1886 20300478 This strongly implies that CYP4A fatty acid omega-hydroxylase P450s may play an important role in the development of steatohepatitis.
1887 20523905 Epistasis of transcriptomes reveals synergism between transcriptional activators Hnf1alpha and Hnf4alpha.
1888 20523905 The transcription factors Hnf1alpha and Hnf4alpha control pancreatic islet beta-cell function and growth, and mutations in their genes cause closely related forms of diabetes.
1889 20523905 We have now exploited genetic epistasis to examine how Hnf1alpha and Hnf4alpha functionally interact in pancreatic islets.
1890 20523905 We integrated expression and genomic binding studies and show that the shared transcriptional phenotype of these two mutant models is linked to common direct targets, rather than to known effects of Hnf1alpha on Hnf4a gene transcription.
1891 20523905 Epistasis analysis with transcriptomes of single- and double-mutant islets revealed that Hnf1alpha and Hnf4alpha regulate common targets synergistically.
1892 20523905 These findings provide an in vivo strategy to study combinatorial gene regulation and reveal how Hnf1alpha and Hnf4alpha control a common islet-cell regulatory program that is defective in human monogenic diabetes.
1893 20523905 Epistasis of transcriptomes reveals synergism between transcriptional activators Hnf1alpha and Hnf4alpha.
1894 20523905 The transcription factors Hnf1alpha and Hnf4alpha control pancreatic islet beta-cell function and growth, and mutations in their genes cause closely related forms of diabetes.
1895 20523905 We have now exploited genetic epistasis to examine how Hnf1alpha and Hnf4alpha functionally interact in pancreatic islets.
1896 20523905 We integrated expression and genomic binding studies and show that the shared transcriptional phenotype of these two mutant models is linked to common direct targets, rather than to known effects of Hnf1alpha on Hnf4a gene transcription.
1897 20523905 Epistasis analysis with transcriptomes of single- and double-mutant islets revealed that Hnf1alpha and Hnf4alpha regulate common targets synergistically.
1898 20523905 These findings provide an in vivo strategy to study combinatorial gene regulation and reveal how Hnf1alpha and Hnf4alpha control a common islet-cell regulatory program that is defective in human monogenic diabetes.
1899 20523905 Epistasis of transcriptomes reveals synergism between transcriptional activators Hnf1alpha and Hnf4alpha.
1900 20523905 The transcription factors Hnf1alpha and Hnf4alpha control pancreatic islet beta-cell function and growth, and mutations in their genes cause closely related forms of diabetes.
1901 20523905 We have now exploited genetic epistasis to examine how Hnf1alpha and Hnf4alpha functionally interact in pancreatic islets.
1902 20523905 We integrated expression and genomic binding studies and show that the shared transcriptional phenotype of these two mutant models is linked to common direct targets, rather than to known effects of Hnf1alpha on Hnf4a gene transcription.
1903 20523905 Epistasis analysis with transcriptomes of single- and double-mutant islets revealed that Hnf1alpha and Hnf4alpha regulate common targets synergistically.
1904 20523905 These findings provide an in vivo strategy to study combinatorial gene regulation and reveal how Hnf1alpha and Hnf4alpha control a common islet-cell regulatory program that is defective in human monogenic diabetes.
1905 20523905 Epistasis of transcriptomes reveals synergism between transcriptional activators Hnf1alpha and Hnf4alpha.
1906 20523905 The transcription factors Hnf1alpha and Hnf4alpha control pancreatic islet beta-cell function and growth, and mutations in their genes cause closely related forms of diabetes.
1907 20523905 We have now exploited genetic epistasis to examine how Hnf1alpha and Hnf4alpha functionally interact in pancreatic islets.
1908 20523905 We integrated expression and genomic binding studies and show that the shared transcriptional phenotype of these two mutant models is linked to common direct targets, rather than to known effects of Hnf1alpha on Hnf4a gene transcription.
1909 20523905 Epistasis analysis with transcriptomes of single- and double-mutant islets revealed that Hnf1alpha and Hnf4alpha regulate common targets synergistically.
1910 20523905 These findings provide an in vivo strategy to study combinatorial gene regulation and reveal how Hnf1alpha and Hnf4alpha control a common islet-cell regulatory program that is defective in human monogenic diabetes.
1911 20523905 Epistasis of transcriptomes reveals synergism between transcriptional activators Hnf1alpha and Hnf4alpha.
1912 20523905 The transcription factors Hnf1alpha and Hnf4alpha control pancreatic islet beta-cell function and growth, and mutations in their genes cause closely related forms of diabetes.
1913 20523905 We have now exploited genetic epistasis to examine how Hnf1alpha and Hnf4alpha functionally interact in pancreatic islets.
1914 20523905 We integrated expression and genomic binding studies and show that the shared transcriptional phenotype of these two mutant models is linked to common direct targets, rather than to known effects of Hnf1alpha on Hnf4a gene transcription.
1915 20523905 Epistasis analysis with transcriptomes of single- and double-mutant islets revealed that Hnf1alpha and Hnf4alpha regulate common targets synergistically.
1916 20523905 These findings provide an in vivo strategy to study combinatorial gene regulation and reveal how Hnf1alpha and Hnf4alpha control a common islet-cell regulatory program that is defective in human monogenic diabetes.
1917 20523905 Epistasis of transcriptomes reveals synergism between transcriptional activators Hnf1alpha and Hnf4alpha.
1918 20523905 The transcription factors Hnf1alpha and Hnf4alpha control pancreatic islet beta-cell function and growth, and mutations in their genes cause closely related forms of diabetes.
1919 20523905 We have now exploited genetic epistasis to examine how Hnf1alpha and Hnf4alpha functionally interact in pancreatic islets.
1920 20523905 We integrated expression and genomic binding studies and show that the shared transcriptional phenotype of these two mutant models is linked to common direct targets, rather than to known effects of Hnf1alpha on Hnf4a gene transcription.
1921 20523905 Epistasis analysis with transcriptomes of single- and double-mutant islets revealed that Hnf1alpha and Hnf4alpha regulate common targets synergistically.
1922 20523905 These findings provide an in vivo strategy to study combinatorial gene regulation and reveal how Hnf1alpha and Hnf4alpha control a common islet-cell regulatory program that is defective in human monogenic diabetes.
1923 20558840 As a key regulator of insulin secretion and metabolism of glucose, cholesterol and fatty acid, hepatocyte nuclear factor 4alpha (HNF4A) was suggested as a candidate gene for type 2 diabetes (T2D); however, no association study between HNF4A and T2D in the Chinese population has been conducted before.
1924 20660599 Overexpression via adenovirus-mediated gene transfer and siRNA-mediated gene silencing established that hepatocyte nuclear factor 4 (HNF-4) is an important regulator of apoM gene transcription in hepatic cells. apoM promoter deletion analysis combined with DNA affinity precipitation and chromatin immunoprecipitation assays revealed that HNF-4 binds to a hormone-response element (HRE) in the proximal apoM promoter (nucleotides -33 to -21).
1925 20660599 Mutagenesis of this HRE decreased basal hepatic apoM promoter activity to 10% of control and abolished the HNF4-mediated transactivation of the apoM promoter.
1926 20660599 In addition to HNF-4, homodimers of retinoid X receptor and heterodimers of retinoid X receptor with receptors for retinoic acid, thyroid hormone, fibrates (peroxisome proliferator-activated receptor), and oxysterols (liver X receptor) were shown to bind with different affinities to the proximal HRE in vitro and in vivo.
1927 20660599 Overexpression via adenovirus-mediated gene transfer and siRNA-mediated gene silencing established that hepatocyte nuclear factor 4 (HNF-4) is an important regulator of apoM gene transcription in hepatic cells. apoM promoter deletion analysis combined with DNA affinity precipitation and chromatin immunoprecipitation assays revealed that HNF-4 binds to a hormone-response element (HRE) in the proximal apoM promoter (nucleotides -33 to -21).
1928 20660599 Mutagenesis of this HRE decreased basal hepatic apoM promoter activity to 10% of control and abolished the HNF4-mediated transactivation of the apoM promoter.
1929 20660599 In addition to HNF-4, homodimers of retinoid X receptor and heterodimers of retinoid X receptor with receptors for retinoic acid, thyroid hormone, fibrates (peroxisome proliferator-activated receptor), and oxysterols (liver X receptor) were shown to bind with different affinities to the proximal HRE in vitro and in vivo.
1930 20660599 Overexpression via adenovirus-mediated gene transfer and siRNA-mediated gene silencing established that hepatocyte nuclear factor 4 (HNF-4) is an important regulator of apoM gene transcription in hepatic cells. apoM promoter deletion analysis combined with DNA affinity precipitation and chromatin immunoprecipitation assays revealed that HNF-4 binds to a hormone-response element (HRE) in the proximal apoM promoter (nucleotides -33 to -21).
1931 20660599 Mutagenesis of this HRE decreased basal hepatic apoM promoter activity to 10% of control and abolished the HNF4-mediated transactivation of the apoM promoter.
1932 20660599 In addition to HNF-4, homodimers of retinoid X receptor and heterodimers of retinoid X receptor with receptors for retinoic acid, thyroid hormone, fibrates (peroxisome proliferator-activated receptor), and oxysterols (liver X receptor) were shown to bind with different affinities to the proximal HRE in vitro and in vivo.
1933 20675304 Insulin treatment and high-fat diet feeding reduces the expression of three Tcf genes in rodent pancreas.
1934 20675304 Both Tcf7 and Tcf7l1, but not Lef1, were expressed in the pancreas.
1935 20675304 The expression of the three Tcf genes (Tcf7, Tcf7l1, and Tcf7l2) in the pancreas was reduced by treatment with insulin or high-fat diet feeding, in contrast to the stimulation of Tcf7l2 expression by insulin in the gut.
1936 20675304 Insulin treatment and high-fat diet feeding reduces the expression of three Tcf genes in rodent pancreas.
1937 20675304 Both Tcf7 and Tcf7l1, but not Lef1, were expressed in the pancreas.
1938 20675304 The expression of the three Tcf genes (Tcf7, Tcf7l1, and Tcf7l2) in the pancreas was reduced by treatment with insulin or high-fat diet feeding, in contrast to the stimulation of Tcf7l2 expression by insulin in the gut.
1939 20690076 The most common cause of Maturity-Onset Diabetes of the Young (MODY) are mutations in the Hepatic Nuclear Factor 1α (HNF-1α) gene, resulting in MODY3.
1940 20705777 Double heterozygous mutations involving both HNF1A/MODY3 and HNF4A/MODY1 genes: a case report.
1941 20879971 These genes include glucokinase (GCK), HLA antigens, insulin receptor (INSR), insulin-like growth factor-2 (IGF2), HNF4A, insulin gene (INS-VNTR), plasminogen activator inhibitor 1 (PAI-1), potassium inwardly rectifying channel subfamily J, member 11 (KCNJ11), hepatocyte nuclear factor-4a (HNF4A).
1942 21115832 Here, we identify 9cRA in mouse pancreas by liquid chromatography/tandem mass spectrometry (LC/MS/MS), and show that 9cRA decreases with feeding and after glucose dosing and varies inversely with serum insulin. 9cRA reduces glucose-stimulated insulin secretion (GSIS) in mouse islets and in the rat β-cell line 832/13 within 15 min by reducing glucose transporter type 2 (Glut2) and glucokinase (GK) activities. 9cRA also reduces Pdx-1 and HNF4α mRNA expression, ∼8- and 80-fold, respectively: defects in Pdx-1 or HNF4α cause maturity onset diabetes of the young (MODY4 and 1, respectively), as does a defective GK gene (MODY2).
1943 21237163 CCN2 stimulates phosphorylation of LRP6 and GSK-3β resulting in accumulation and nuclear localisation of β-catenin, TCF/LEF activity and expression of Wnt targets.
1944 21237163 DKK-1 and LRP6 siRNA reversed CCN2's effects.
1945 21263211 Paired-homeodomain transcription factor 4 (PAX4) functions as a transcriptional repressor and is involved in the differentiation of insulin-secreting β-cells.
1946 21263211 Here we identified a novel PAX4 mutation in a Japanese patient with MODY.
1947 21263211 We therefore analyzed several candidate genes of MODY, and identified a novel mutation of a 39-base heterozygous deletion in exon 3 (c.374-412 del39) of PAX4 in the proband and his father.
1948 21263211 As expected, luciferase-reporter assays revealed that the mutant PAX4 could not repress the activities of insulin and glucagon gene promoters, unlike the wild-type PAX4 that repressed the promoter activities.
1949 21263211 Paired-homeodomain transcription factor 4 (PAX4) functions as a transcriptional repressor and is involved in the differentiation of insulin-secreting β-cells.
1950 21263211 Here we identified a novel PAX4 mutation in a Japanese patient with MODY.
1951 21263211 We therefore analyzed several candidate genes of MODY, and identified a novel mutation of a 39-base heterozygous deletion in exon 3 (c.374-412 del39) of PAX4 in the proband and his father.
1952 21263211 As expected, luciferase-reporter assays revealed that the mutant PAX4 could not repress the activities of insulin and glucagon gene promoters, unlike the wild-type PAX4 that repressed the promoter activities.
1953 21300624 Amongst these are multiple genes involved in IL23/Th17 signalling (IL23R, IL12B, JAK2, TYK2 and STAT3), IL10, IL1R2, REL, CARD9, NKX2.3, ICOSLG, PRDM1, SMAD3 and ORMDL3.
1954 21300624 For Crohn's disease, defective processing of intracellular bacteria has become a central theme, following gene discoveries in autophagy and innate immunity (associations with NOD2, IRGM, ATG16L1 are specific to Crohn's disease).
1955 21300624 Genetic evidence has also demonstrated the importance of barrier function to the development of ulcerative colitis (HNF4A, LAMB1, CDH1 and GNA12).
1956 21442235 Association analyses between the genetic polymorphisms of HNF4A and FOXO1 genes and Chinese Han patients with type 2 diabetes.
1957 21442235 The hepatocyte nuclear factor 4-alpha (HNF4A) and human forkhead box O1 (FOXO1) genes have been discovered to be associated with type 2 diabetes (T2D) in different populations.
1958 21442235 This study aimed to evaluate the association between HNF4A and FOXO1 genetic polymorphisms and type 2 diabetes in the Chinese Han population.
1959 21442235 Six single-nucleotide polymorphisms (SNPs) in HNF4A and seven in FOXO1 were selected and genotyped with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) or TaqMan(®) technology.
1960 21442235 Moreover, the authors confirmed the results of previous studies for the interaction between HNF4A and FOXO1 in the pathogenesis of type 2 diabetes.
1961 21442235 Association analyses between the genetic polymorphisms of HNF4A and FOXO1 genes and Chinese Han patients with type 2 diabetes.
1962 21442235 The hepatocyte nuclear factor 4-alpha (HNF4A) and human forkhead box O1 (FOXO1) genes have been discovered to be associated with type 2 diabetes (T2D) in different populations.
1963 21442235 This study aimed to evaluate the association between HNF4A and FOXO1 genetic polymorphisms and type 2 diabetes in the Chinese Han population.
1964 21442235 Six single-nucleotide polymorphisms (SNPs) in HNF4A and seven in FOXO1 were selected and genotyped with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) or TaqMan(®) technology.
1965 21442235 Moreover, the authors confirmed the results of previous studies for the interaction between HNF4A and FOXO1 in the pathogenesis of type 2 diabetes.
1966 21442235 Association analyses between the genetic polymorphisms of HNF4A and FOXO1 genes and Chinese Han patients with type 2 diabetes.
1967 21442235 The hepatocyte nuclear factor 4-alpha (HNF4A) and human forkhead box O1 (FOXO1) genes have been discovered to be associated with type 2 diabetes (T2D) in different populations.
1968 21442235 This study aimed to evaluate the association between HNF4A and FOXO1 genetic polymorphisms and type 2 diabetes in the Chinese Han population.
1969 21442235 Six single-nucleotide polymorphisms (SNPs) in HNF4A and seven in FOXO1 were selected and genotyped with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) or TaqMan(®) technology.
1970 21442235 Moreover, the authors confirmed the results of previous studies for the interaction between HNF4A and FOXO1 in the pathogenesis of type 2 diabetes.
1971 21442235 Association analyses between the genetic polymorphisms of HNF4A and FOXO1 genes and Chinese Han patients with type 2 diabetes.
1972 21442235 The hepatocyte nuclear factor 4-alpha (HNF4A) and human forkhead box O1 (FOXO1) genes have been discovered to be associated with type 2 diabetes (T2D) in different populations.
1973 21442235 This study aimed to evaluate the association between HNF4A and FOXO1 genetic polymorphisms and type 2 diabetes in the Chinese Han population.
1974 21442235 Six single-nucleotide polymorphisms (SNPs) in HNF4A and seven in FOXO1 were selected and genotyped with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) or TaqMan(®) technology.
1975 21442235 Moreover, the authors confirmed the results of previous studies for the interaction between HNF4A and FOXO1 in the pathogenesis of type 2 diabetes.
1976 21442235 Association analyses between the genetic polymorphisms of HNF4A and FOXO1 genes and Chinese Han patients with type 2 diabetes.
1977 21442235 The hepatocyte nuclear factor 4-alpha (HNF4A) and human forkhead box O1 (FOXO1) genes have been discovered to be associated with type 2 diabetes (T2D) in different populations.
1978 21442235 This study aimed to evaluate the association between HNF4A and FOXO1 genetic polymorphisms and type 2 diabetes in the Chinese Han population.
1979 21442235 Six single-nucleotide polymorphisms (SNPs) in HNF4A and seven in FOXO1 were selected and genotyped with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) or TaqMan(®) technology.
1980 21442235 Moreover, the authors confirmed the results of previous studies for the interaction between HNF4A and FOXO1 in the pathogenesis of type 2 diabetes.
1981 21633728 Hepatocyte nuclear factor 4 alpha P2 promoter variants associate with insulin resistance.
1982 21633728 This study aimed to investigate the associations of hepatocyte nuclear factor 4 (HNF4) alpha single nucleotide polymorphisms (SNPs) and haplotype with insulin resistance and metabolic syndrome parameters.
1983 21633728 The HNF4 alpha P2 promoter SNPs rs4810424, rs1884613 and rs1884614 were associated with insulin resistance (p = 0.017; 0.037; 0.024) and body mass index (BMI) (p = 0.03; 0.035; 0.039).
1984 21633728 HNF4 alpha common haplotype CCCGTC associated with higher insulin resistance (p = 0.022), fasting blood glucose (FBG) (p = 0.035) and lower HDLc (p = 0.001).
1985 21633728 In conclusion, subjects with HNF4 alpha P2 variants and haplotypes have been shown to have a higher insulin resistance and are therefore at a higher risk for developing type 2 diabetes mellitus.
1986 21633728 Hepatocyte nuclear factor 4 alpha P2 promoter variants associate with insulin resistance.
1987 21633728 This study aimed to investigate the associations of hepatocyte nuclear factor 4 (HNF4) alpha single nucleotide polymorphisms (SNPs) and haplotype with insulin resistance and metabolic syndrome parameters.
1988 21633728 The HNF4 alpha P2 promoter SNPs rs4810424, rs1884613 and rs1884614 were associated with insulin resistance (p = 0.017; 0.037; 0.024) and body mass index (BMI) (p = 0.03; 0.035; 0.039).
1989 21633728 HNF4 alpha common haplotype CCCGTC associated with higher insulin resistance (p = 0.022), fasting blood glucose (FBG) (p = 0.035) and lower HDLc (p = 0.001).
1990 21633728 In conclusion, subjects with HNF4 alpha P2 variants and haplotypes have been shown to have a higher insulin resistance and are therefore at a higher risk for developing type 2 diabetes mellitus.
1991 21633728 Hepatocyte nuclear factor 4 alpha P2 promoter variants associate with insulin resistance.
1992 21633728 This study aimed to investigate the associations of hepatocyte nuclear factor 4 (HNF4) alpha single nucleotide polymorphisms (SNPs) and haplotype with insulin resistance and metabolic syndrome parameters.
1993 21633728 The HNF4 alpha P2 promoter SNPs rs4810424, rs1884613 and rs1884614 were associated with insulin resistance (p = 0.017; 0.037; 0.024) and body mass index (BMI) (p = 0.03; 0.035; 0.039).
1994 21633728 HNF4 alpha common haplotype CCCGTC associated with higher insulin resistance (p = 0.022), fasting blood glucose (FBG) (p = 0.035) and lower HDLc (p = 0.001).
1995 21633728 In conclusion, subjects with HNF4 alpha P2 variants and haplotypes have been shown to have a higher insulin resistance and are therefore at a higher risk for developing type 2 diabetes mellitus.
1996 21633728 Hepatocyte nuclear factor 4 alpha P2 promoter variants associate with insulin resistance.
1997 21633728 This study aimed to investigate the associations of hepatocyte nuclear factor 4 (HNF4) alpha single nucleotide polymorphisms (SNPs) and haplotype with insulin resistance and metabolic syndrome parameters.
1998 21633728 The HNF4 alpha P2 promoter SNPs rs4810424, rs1884613 and rs1884614 were associated with insulin resistance (p = 0.017; 0.037; 0.024) and body mass index (BMI) (p = 0.03; 0.035; 0.039).
1999 21633728 HNF4 alpha common haplotype CCCGTC associated with higher insulin resistance (p = 0.022), fasting blood glucose (FBG) (p = 0.035) and lower HDLc (p = 0.001).
2000 21633728 In conclusion, subjects with HNF4 alpha P2 variants and haplotypes have been shown to have a higher insulin resistance and are therefore at a higher risk for developing type 2 diabetes mellitus.
2001 21633728 Hepatocyte nuclear factor 4 alpha P2 promoter variants associate with insulin resistance.
2002 21633728 This study aimed to investigate the associations of hepatocyte nuclear factor 4 (HNF4) alpha single nucleotide polymorphisms (SNPs) and haplotype with insulin resistance and metabolic syndrome parameters.
2003 21633728 The HNF4 alpha P2 promoter SNPs rs4810424, rs1884613 and rs1884614 were associated with insulin resistance (p = 0.017; 0.037; 0.024) and body mass index (BMI) (p = 0.03; 0.035; 0.039).
2004 21633728 HNF4 alpha common haplotype CCCGTC associated with higher insulin resistance (p = 0.022), fasting blood glucose (FBG) (p = 0.035) and lower HDLc (p = 0.001).
2005 21633728 In conclusion, subjects with HNF4 alpha P2 variants and haplotypes have been shown to have a higher insulin resistance and are therefore at a higher risk for developing type 2 diabetes mellitus.
2006 21677915 This is followed by a discussion on the glucokinase and hepatocyte nuclear factor-1 alpha MODY, which together constitute the most frequent cause of MODY syndromes in all populations.
2007 21761282 Characterization of beta cell and incretin function in patients with MODY1 (HNF4A MODY) and MODY3 (HNF1A MODY) in a Swedish patient collection.
2008 21761282 The aim of this study was to evaluate the beta cell and incretin function in patients with HNF4A and HNF1A MODY during a test meal.
2009 21761282 Clinical characteristics and biochemical data (glucose, proinsulin, insulin, C-peptide, GLP-1 and GIP) during a test meal were compared between MODY patients from eight different families.
2010 21761282 The early phase of insulin secretion was attenuated in HNF4A, HNF1A MODY and T2D (AUC0-30 controls: 558.2 ± 101.2, HNF4A MODY: 93.8 ± 57.0, HNF1A MODY: 170.2 ± 64.5, T2D: 211.2 ± 65.3, P < 0.01).
2011 21761282 Markedly reduced levels of proinsulin were found in HNF4A MODY compared to T2D and that tended to be so also in HNF1A MODY (HNF4A MODY: 3.7 ± 1.2, HNF1A MODY: 8.3 ± 3.8 vs.
2012 21761282 Patients with HNF4A MODY had similar total GLP-1 and GIP responses as controls (GLP-1 AUC: (control: 823.9 ± 703.8, T2D: 556.4 ± 698.2, HNF4A MODY: 1,257.0 ± 999.3, HNF1A MODY: 697.1 ± 818.4) but with a different secretion pattern.
2013 21761282 Patients with HNF4A and HNF1A MODY showed an attenuated early phase of insulin secretion similar to T2Ds.
2014 21761282 Thus, GIP may be a more important factor for insulin secretion than GLP-1 in MODY patients.
2015 21761282 Characterization of beta cell and incretin function in patients with MODY1 (HNF4A MODY) and MODY3 (HNF1A MODY) in a Swedish patient collection.
2016 21761282 The aim of this study was to evaluate the beta cell and incretin function in patients with HNF4A and HNF1A MODY during a test meal.
2017 21761282 Clinical characteristics and biochemical data (glucose, proinsulin, insulin, C-peptide, GLP-1 and GIP) during a test meal were compared between MODY patients from eight different families.
2018 21761282 The early phase of insulin secretion was attenuated in HNF4A, HNF1A MODY and T2D (AUC0-30 controls: 558.2 ± 101.2, HNF4A MODY: 93.8 ± 57.0, HNF1A MODY: 170.2 ± 64.5, T2D: 211.2 ± 65.3, P < 0.01).
2019 21761282 Markedly reduced levels of proinsulin were found in HNF4A MODY compared to T2D and that tended to be so also in HNF1A MODY (HNF4A MODY: 3.7 ± 1.2, HNF1A MODY: 8.3 ± 3.8 vs.
2020 21761282 Patients with HNF4A MODY had similar total GLP-1 and GIP responses as controls (GLP-1 AUC: (control: 823.9 ± 703.8, T2D: 556.4 ± 698.2, HNF4A MODY: 1,257.0 ± 999.3, HNF1A MODY: 697.1 ± 818.4) but with a different secretion pattern.
2021 21761282 Patients with HNF4A and HNF1A MODY showed an attenuated early phase of insulin secretion similar to T2Ds.
2022 21761282 Thus, GIP may be a more important factor for insulin secretion than GLP-1 in MODY patients.
2023 21761282 Characterization of beta cell and incretin function in patients with MODY1 (HNF4A MODY) and MODY3 (HNF1A MODY) in a Swedish patient collection.
2024 21761282 The aim of this study was to evaluate the beta cell and incretin function in patients with HNF4A and HNF1A MODY during a test meal.
2025 21761282 Clinical characteristics and biochemical data (glucose, proinsulin, insulin, C-peptide, GLP-1 and GIP) during a test meal were compared between MODY patients from eight different families.
2026 21761282 The early phase of insulin secretion was attenuated in HNF4A, HNF1A MODY and T2D (AUC0-30 controls: 558.2 ± 101.2, HNF4A MODY: 93.8 ± 57.0, HNF1A MODY: 170.2 ± 64.5, T2D: 211.2 ± 65.3, P < 0.01).
2027 21761282 Markedly reduced levels of proinsulin were found in HNF4A MODY compared to T2D and that tended to be so also in HNF1A MODY (HNF4A MODY: 3.7 ± 1.2, HNF1A MODY: 8.3 ± 3.8 vs.
2028 21761282 Patients with HNF4A MODY had similar total GLP-1 and GIP responses as controls (GLP-1 AUC: (control: 823.9 ± 703.8, T2D: 556.4 ± 698.2, HNF4A MODY: 1,257.0 ± 999.3, HNF1A MODY: 697.1 ± 818.4) but with a different secretion pattern.
2029 21761282 Patients with HNF4A and HNF1A MODY showed an attenuated early phase of insulin secretion similar to T2Ds.
2030 21761282 Thus, GIP may be a more important factor for insulin secretion than GLP-1 in MODY patients.
2031 21761282 Characterization of beta cell and incretin function in patients with MODY1 (HNF4A MODY) and MODY3 (HNF1A MODY) in a Swedish patient collection.
2032 21761282 The aim of this study was to evaluate the beta cell and incretin function in patients with HNF4A and HNF1A MODY during a test meal.
2033 21761282 Clinical characteristics and biochemical data (glucose, proinsulin, insulin, C-peptide, GLP-1 and GIP) during a test meal were compared between MODY patients from eight different families.
2034 21761282 The early phase of insulin secretion was attenuated in HNF4A, HNF1A MODY and T2D (AUC0-30 controls: 558.2 ± 101.2, HNF4A MODY: 93.8 ± 57.0, HNF1A MODY: 170.2 ± 64.5, T2D: 211.2 ± 65.3, P < 0.01).
2035 21761282 Markedly reduced levels of proinsulin were found in HNF4A MODY compared to T2D and that tended to be so also in HNF1A MODY (HNF4A MODY: 3.7 ± 1.2, HNF1A MODY: 8.3 ± 3.8 vs.
2036 21761282 Patients with HNF4A MODY had similar total GLP-1 and GIP responses as controls (GLP-1 AUC: (control: 823.9 ± 703.8, T2D: 556.4 ± 698.2, HNF4A MODY: 1,257.0 ± 999.3, HNF1A MODY: 697.1 ± 818.4) but with a different secretion pattern.
2037 21761282 Patients with HNF4A and HNF1A MODY showed an attenuated early phase of insulin secretion similar to T2Ds.
2038 21761282 Thus, GIP may be a more important factor for insulin secretion than GLP-1 in MODY patients.
2039 21761282 Characterization of beta cell and incretin function in patients with MODY1 (HNF4A MODY) and MODY3 (HNF1A MODY) in a Swedish patient collection.
2040 21761282 The aim of this study was to evaluate the beta cell and incretin function in patients with HNF4A and HNF1A MODY during a test meal.
2041 21761282 Clinical characteristics and biochemical data (glucose, proinsulin, insulin, C-peptide, GLP-1 and GIP) during a test meal were compared between MODY patients from eight different families.
2042 21761282 The early phase of insulin secretion was attenuated in HNF4A, HNF1A MODY and T2D (AUC0-30 controls: 558.2 ± 101.2, HNF4A MODY: 93.8 ± 57.0, HNF1A MODY: 170.2 ± 64.5, T2D: 211.2 ± 65.3, P < 0.01).
2043 21761282 Markedly reduced levels of proinsulin were found in HNF4A MODY compared to T2D and that tended to be so also in HNF1A MODY (HNF4A MODY: 3.7 ± 1.2, HNF1A MODY: 8.3 ± 3.8 vs.
2044 21761282 Patients with HNF4A MODY had similar total GLP-1 and GIP responses as controls (GLP-1 AUC: (control: 823.9 ± 703.8, T2D: 556.4 ± 698.2, HNF4A MODY: 1,257.0 ± 999.3, HNF1A MODY: 697.1 ± 818.4) but with a different secretion pattern.
2045 21761282 Patients with HNF4A and HNF1A MODY showed an attenuated early phase of insulin secretion similar to T2Ds.
2046 21761282 Thus, GIP may be a more important factor for insulin secretion than GLP-1 in MODY patients.
2047 21761282 Characterization of beta cell and incretin function in patients with MODY1 (HNF4A MODY) and MODY3 (HNF1A MODY) in a Swedish patient collection.
2048 21761282 The aim of this study was to evaluate the beta cell and incretin function in patients with HNF4A and HNF1A MODY during a test meal.
2049 21761282 Clinical characteristics and biochemical data (glucose, proinsulin, insulin, C-peptide, GLP-1 and GIP) during a test meal were compared between MODY patients from eight different families.
2050 21761282 The early phase of insulin secretion was attenuated in HNF4A, HNF1A MODY and T2D (AUC0-30 controls: 558.2 ± 101.2, HNF4A MODY: 93.8 ± 57.0, HNF1A MODY: 170.2 ± 64.5, T2D: 211.2 ± 65.3, P < 0.01).
2051 21761282 Markedly reduced levels of proinsulin were found in HNF4A MODY compared to T2D and that tended to be so also in HNF1A MODY (HNF4A MODY: 3.7 ± 1.2, HNF1A MODY: 8.3 ± 3.8 vs.
2052 21761282 Patients with HNF4A MODY had similar total GLP-1 and GIP responses as controls (GLP-1 AUC: (control: 823.9 ± 703.8, T2D: 556.4 ± 698.2, HNF4A MODY: 1,257.0 ± 999.3, HNF1A MODY: 697.1 ± 818.4) but with a different secretion pattern.
2053 21761282 Patients with HNF4A and HNF1A MODY showed an attenuated early phase of insulin secretion similar to T2Ds.
2054 21761282 Thus, GIP may be a more important factor for insulin secretion than GLP-1 in MODY patients.
2055 21761282 Characterization of beta cell and incretin function in patients with MODY1 (HNF4A MODY) and MODY3 (HNF1A MODY) in a Swedish patient collection.
2056 21761282 The aim of this study was to evaluate the beta cell and incretin function in patients with HNF4A and HNF1A MODY during a test meal.
2057 21761282 Clinical characteristics and biochemical data (glucose, proinsulin, insulin, C-peptide, GLP-1 and GIP) during a test meal were compared between MODY patients from eight different families.
2058 21761282 The early phase of insulin secretion was attenuated in HNF4A, HNF1A MODY and T2D (AUC0-30 controls: 558.2 ± 101.2, HNF4A MODY: 93.8 ± 57.0, HNF1A MODY: 170.2 ± 64.5, T2D: 211.2 ± 65.3, P < 0.01).
2059 21761282 Markedly reduced levels of proinsulin were found in HNF4A MODY compared to T2D and that tended to be so also in HNF1A MODY (HNF4A MODY: 3.7 ± 1.2, HNF1A MODY: 8.3 ± 3.8 vs.
2060 21761282 Patients with HNF4A MODY had similar total GLP-1 and GIP responses as controls (GLP-1 AUC: (control: 823.9 ± 703.8, T2D: 556.4 ± 698.2, HNF4A MODY: 1,257.0 ± 999.3, HNF1A MODY: 697.1 ± 818.4) but with a different secretion pattern.
2061 21761282 Patients with HNF4A and HNF1A MODY showed an attenuated early phase of insulin secretion similar to T2Ds.
2062 21761282 Thus, GIP may be a more important factor for insulin secretion than GLP-1 in MODY patients.
2063 21761282 Characterization of beta cell and incretin function in patients with MODY1 (HNF4A MODY) and MODY3 (HNF1A MODY) in a Swedish patient collection.
2064 21761282 The aim of this study was to evaluate the beta cell and incretin function in patients with HNF4A and HNF1A MODY during a test meal.
2065 21761282 Clinical characteristics and biochemical data (glucose, proinsulin, insulin, C-peptide, GLP-1 and GIP) during a test meal were compared between MODY patients from eight different families.
2066 21761282 The early phase of insulin secretion was attenuated in HNF4A, HNF1A MODY and T2D (AUC0-30 controls: 558.2 ± 101.2, HNF4A MODY: 93.8 ± 57.0, HNF1A MODY: 170.2 ± 64.5, T2D: 211.2 ± 65.3, P < 0.01).
2067 21761282 Markedly reduced levels of proinsulin were found in HNF4A MODY compared to T2D and that tended to be so also in HNF1A MODY (HNF4A MODY: 3.7 ± 1.2, HNF1A MODY: 8.3 ± 3.8 vs.
2068 21761282 Patients with HNF4A MODY had similar total GLP-1 and GIP responses as controls (GLP-1 AUC: (control: 823.9 ± 703.8, T2D: 556.4 ± 698.2, HNF4A MODY: 1,257.0 ± 999.3, HNF1A MODY: 697.1 ± 818.4) but with a different secretion pattern.
2069 21761282 Patients with HNF4A and HNF1A MODY showed an attenuated early phase of insulin secretion similar to T2Ds.
2070 21761282 Thus, GIP may be a more important factor for insulin secretion than GLP-1 in MODY patients.
2071 21768169 Potential role of estradiol and progesterone in insulin resistance through constitutive androstane receptor.
2072 21768169 The constitutive androstane receptor (CAR) may participate in insulin resistance in pregnancy, and sex steroids, estradiol (E(2)) and progesterone, may also be involved.
2073 21768169 DNA affinity immunoblotting and chromatin immunoprecipitation assay revealed that CAR ligand enhanced the recruitment of the gluconeogenic transcription factors, forkhead box O1 (FOXO1) and hepatocyte nuclear factor 4α (HNF4α), but sex steroids suppressed these recruitments on the CAR responsive element.
2074 21814221 We genotyped 91 polymorphisms in 19 genes (ABCC8, HNF1A, HNF1B, HNF4A, INS, INSM1, ISL1, KCNJ11, MAFA, MNX1, NEUROD1, NEUROG3, NKX2.2, NKX6.1, PAX4, PAX6, PDX1, USF1 and WFS1) in 2025 unrelated North Indians of Indo-European ethnicity comprising of 1019 diabetic and 1006 non-diabetic subjects.
2075 21814221 Variants in USF1, ABCC8, ISL1 and KCNJ11 showed nominal association, while haplotypes in these genes were significantly associated. rs3812704 upstream of NEUROG3 significantly increased risk for type 2 diabetes in normal-weight/lean subjects (OR=1.68 (95%CI 1.25-2.24), P=4.9 × 10(-4)).
2076 21845205 Transcription factors, such as hepatocyte nuclear factor-4α and the forkhead box protein-M1, and cell cycle regulators, such as menin, p27 and p18, are important intracellular signals responsible for these effects.
2077 21874001 In the combined analysis, we identified common genetic variants at six loci (GRB14, ST6GAL1, VPS26A, HMG20A, AP3S2 and HNF4A) newly associated with T2D (P = 4.1 × 10(-8) to P = 1.9 × 10(-11)).
2078 21874001 SNPs at GRB14 were also associated with insulin sensitivity (P = 5.0 × 10(-4)), and SNPs at ST6GAL1 and HNF4A were also associated with pancreatic beta-cell function (P = 0.02 and P = 0.001, respectively).
2079 21874001 In the combined analysis, we identified common genetic variants at six loci (GRB14, ST6GAL1, VPS26A, HMG20A, AP3S2 and HNF4A) newly associated with T2D (P = 4.1 × 10(-8) to P = 1.9 × 10(-11)).
2080 21874001 SNPs at GRB14 were also associated with insulin sensitivity (P = 5.0 × 10(-4)), and SNPs at ST6GAL1 and HNF4A were also associated with pancreatic beta-cell function (P = 0.02 and P = 0.001, respectively).
2081 22118586 Giving insights to beta cell function, CHI mutations are now known in eight genes (ABCC8, KCNJ11, GLUD1, GCK, HADH, SLC16A1, HNF4A and UCP2).
2082 22158537 The combined analysis identified eight new T2D loci reaching genome-wide significance, which mapped in or near GLIS3, PEPD, FITM2-R3HDML-HNF4A, KCNK16, MAEA, GCC1-PAX4, PSMD6 and ZFAND3.
2083 22158537 The evidence of an association with T2D for PEPD and HNF4A has been shown in previous studies.
2084 22158537 KCNK16 may regulate glucose-dependent insulin secretion in the pancreas.
2085 22231386 The molecular basis of HH involves defects in key genes (ABCC8, KCNJ11, GLUD1, GCK, HADH, SLC16A1, HNF4A and UCP2) which regulate insulin secretion.
2086 22231386 The most severe forms of HH are due to loss of function mutations in ABCC8/KCNJ11 which encode the SUR1 and KIR6.2 components respectively of the pancreatic β-cell K(ATP) channel.
2087 22436693 Compared with CC, pre- and postnatal LP (RR) decreased β-cell fraction, mass, proliferation, aggregate size, and number and increased Hnf1a, Hnf4a, Pdx1, Isl1, Rfx6, and Slc2a2 mRNA levels.
2088 22436693 LP only in pregnancy (RC) also decreased β-cell fraction, mass, proliferation, aggregate size, and number and increased Hnf1a, Hnf4a, Pdx1, Rfx6, and Ins mRNA levels.
2089 22436693 Postnatal LP offspring (CR) showed decreased β-cell mass but increased β-cell fraction, aggregate number, and Hnf1a, Hnf4a, Rfx6, and Slc2a2 mRNA levels.
2090 22436693 Compared with CC, pre- and postnatal LP (RR) decreased β-cell fraction, mass, proliferation, aggregate size, and number and increased Hnf1a, Hnf4a, Pdx1, Isl1, Rfx6, and Slc2a2 mRNA levels.
2091 22436693 LP only in pregnancy (RC) also decreased β-cell fraction, mass, proliferation, aggregate size, and number and increased Hnf1a, Hnf4a, Pdx1, Rfx6, and Ins mRNA levels.
2092 22436693 Postnatal LP offspring (CR) showed decreased β-cell mass but increased β-cell fraction, aggregate number, and Hnf1a, Hnf4a, Rfx6, and Slc2a2 mRNA levels.
2093 22436693 Compared with CC, pre- and postnatal LP (RR) decreased β-cell fraction, mass, proliferation, aggregate size, and number and increased Hnf1a, Hnf4a, Pdx1, Isl1, Rfx6, and Slc2a2 mRNA levels.
2094 22436693 LP only in pregnancy (RC) also decreased β-cell fraction, mass, proliferation, aggregate size, and number and increased Hnf1a, Hnf4a, Pdx1, Rfx6, and Ins mRNA levels.
2095 22436693 Postnatal LP offspring (CR) showed decreased β-cell mass but increased β-cell fraction, aggregate number, and Hnf1a, Hnf4a, Rfx6, and Slc2a2 mRNA levels.
2096 22701567 Whole-exome sequencing and high throughput genotyping identified KCNJ11 as the thirteenth MODY gene.
2097 22719926 We identified an arsenic exposure related 51-gene signature at PND1 and PND70 with several hubs of interaction (Hspa8, IgM and Hnf4a).
2098 22719926 Western blot analysis confirmed changes in the liver at PND70 that included increases of heat shock protein 70 (Hspa8) and active SREBP1.
2099 22796301 Genetic variants in the transcription factor 7-like 2(Tcf7l2) gene have been found to confer a significant risk of type 2 diabetes and attenuated insulin secretion.
2100 22796301 TCF was also found co-localized with peptides that regulate energy homeostasis including AgRP, POMC and NPY.
2101 22796301 TCF7l2, some variants of which have been shown to impair GLP-1-induced insulin secretion, was also found co-localize with GLP-1 in adult TCF wild type progeny.
2102 22802087 Novel presentations of congenital hyperinsulinism due to mutations in the MODY genes: HNF1A and HNF4A.
2103 22841397 Insulin secretion increased from the islets of biotin-supplemented mice, together with the messenger RNA (mRNA) expression of several transcription factors regulating insulin expression and secretion, including forkhead box A2, pancreatic and duodenal homeobox 1 and hepatocyte nuclear factor 4α.
2104 22841397 The mRNA abundance of glucokinase, Cacna1d, acetyl-CoA carboxylase, and insulin also increased.
2105 22859960 The aim of this study was to perform metabolic profiling in urine from patients with MODY due to mutations in the genes encoding glucokinase (GCK) or hepatocyte nuclear factor 1 alpha (HNF1A), type 2 diabetes (T2D) and normoglycaemic control subjects.
2106 22902540 IL1β down-regulation of sex hormone-binding globulin production by decreasing HNF-4α via MEK-1/2 and JNK MAPK pathways.
2107 22902540 We provide evidence that daily IL1β treatment reduces SHBG production in HepG2 cells by the down-regulation of HNF-4A via the MAPK kinase (MEK)-1/2 and c-Jun N-terminal kinase (JNK) MAPK signaling pathways through the activation c-Jun transcription factors.
2108 22902540 The human SHBG promoter sequence contains two putative activator protein 1 (AP1) binding sites recognized by c-Jun transcription factors, but they are not necessary for the IL1β-induced down-regulation of SHBG promoter activity in luciferase reporter gene assays.
2109 22902540 Daily treatment with IL1β reduces hepatic nuclear factor (HNF)-4α mRNA and protein levels via the MEK-1/2 and JNK MAPK signaling pathways.
2110 22902540 Our results show that IL1β reduces hepatic SHBG production by decreasing HNF-4α via MEK-1/2 and JNK MAPK pathways.
2111 23071669 These included five that were common to both ages (TNF, HNF4A, IL15, Progesterone, and YWHAZ), and others that were unique to 2 weeks (e.g.
2112 23071669 MYC/MYCN, TGFB1, and IL2) and to 4 weeks (e.g.
2113 23071669 IFNG, beta-estradiol, p53, NFKB, AKT, PRKCA, IL12, and HLA-C).
2114 23071669 Based on the literature, genes that may play a role in regulating metabolic pathways at 2 weeks include Myc and HNF4A, and at 4 weeks, beta-estradiol, p53, Akt, HNF4A and AR.
2115 23071669 These included five that were common to both ages (TNF, HNF4A, IL15, Progesterone, and YWHAZ), and others that were unique to 2 weeks (e.g.
2116 23071669 MYC/MYCN, TGFB1, and IL2) and to 4 weeks (e.g.
2117 23071669 IFNG, beta-estradiol, p53, NFKB, AKT, PRKCA, IL12, and HLA-C).
2118 23071669 Based on the literature, genes that may play a role in regulating metabolic pathways at 2 weeks include Myc and HNF4A, and at 4 weeks, beta-estradiol, p53, Akt, HNF4A and AR.
2119 23139355 Mutations in the gene encoding glucokinase (GCK) cause a mild hereditary form of diabetes termed maturity-onset diabetes of the young (MODY)2 or GCK-MODY.
2120 23139355 Here, we profiled metabolites in serum from patients with MODY1 (HNF4A), MODY2 (GCK), MODY3 (HNF1A), and type 2 diabetes and from healthy individuals to characterize metabolic perturbations caused by specific mutations.
2121 23139355 Mutations in the gene encoding glucokinase (GCK) cause a mild hereditary form of diabetes termed maturity-onset diabetes of the young (MODY)2 or GCK-MODY.
2122 23139355 Here, we profiled metabolites in serum from patients with MODY1 (HNF4A), MODY2 (GCK), MODY3 (HNF1A), and type 2 diabetes and from healthy individuals to characterize metabolic perturbations caused by specific mutations.
2123 23227446 Mutations in this gene can lead to maturity-onset diabetes of the young (MODY), an uncommon, autosomal dominant, non-insulin dependent form of diabetes.
2124 23306198 Here we report, for the first time, the derivation of human induced pluripotent stem cells (hiPSCs) from patients with five types of MODY: MODY1 (HNF4A), MODY2 (GCK), MODY3 (HNF1A), MODY5 (HNF1B), and MODY8 (CEL) with a polycistronic lentiviral vector expressing a Cre-excisable human "stem cell cassette" containing the four reprogramming factors OCT4, KLF4, SOX2, and CMYC.
2125 23306198 These MODY-hiPSCs morphologically resemble human pluripotent stem cells (hPSCs), express pluripotency markers OCT4, SOX2, NANOG, SSEA-4, and TRA-1-60, give rise to derivatives of the three germ layers in a teratoma assay, and are karyotypically normal.
2126 23348805 Maturity-onset diabetes of the young (MODY) is a monogenic disorder characterized by autosomal dominant inheritance of young-onset (typically <25 years), noninsulin-dependent diabetes due to defective insulin secretion.
2127 23348805 Mutations in the HNF1A gene encoding hepatocyte nuclear factor-1 alpha are the most common cause of MODY in most adult populations studied.
2128 23348805 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
2129 23348805 The identification of an HNF1A or HNF4A gene mutation has important implications for clinical management in diabetes and pregnancy, but MODY is significantly underdiagnosed.
2130 23348805 Maturity-onset diabetes of the young (MODY) is a monogenic disorder characterized by autosomal dominant inheritance of young-onset (typically <25 years), noninsulin-dependent diabetes due to defective insulin secretion.
2131 23348805 Mutations in the HNF1A gene encoding hepatocyte nuclear factor-1 alpha are the most common cause of MODY in most adult populations studied.
2132 23348805 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
2133 23348805 The identification of an HNF1A or HNF4A gene mutation has important implications for clinical management in diabetes and pregnancy, but MODY is significantly underdiagnosed.
2134 23348805 Maturity-onset diabetes of the young (MODY) is a monogenic disorder characterized by autosomal dominant inheritance of young-onset (typically <25 years), noninsulin-dependent diabetes due to defective insulin secretion.
2135 23348805 Mutations in the HNF1A gene encoding hepatocyte nuclear factor-1 alpha are the most common cause of MODY in most adult populations studied.
2136 23348805 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
2137 23348805 The identification of an HNF1A or HNF4A gene mutation has important implications for clinical management in diabetes and pregnancy, but MODY is significantly underdiagnosed.
2138 23348805 Maturity-onset diabetes of the young (MODY) is a monogenic disorder characterized by autosomal dominant inheritance of young-onset (typically <25 years), noninsulin-dependent diabetes due to defective insulin secretion.
2139 23348805 Mutations in the HNF1A gene encoding hepatocyte nuclear factor-1 alpha are the most common cause of MODY in most adult populations studied.
2140 23348805 Sensitivity to treatment with sulfonylurea tablets is a feature of both HNF1A and HNF4A mutations.
2141 23348805 The identification of an HNF1A or HNF4A gene mutation has important implications for clinical management in diabetes and pregnancy, but MODY is significantly underdiagnosed.
2142 23433541 One of the mutations, the deletion 96_98delAAG (p.Lys32del), had not been previously described, reinforcing the worldwide prevalence of GCK MODY and widespread existence of undetected new mutations.
2143 23463236 Persistent effects of an early suboptimal environment, known to increase risk of type 2 diabetes in later life, can alter the epigenetic control of transcriptional master regulators, such as Hnf4a and Pdx1.
2144 23551881 Digenic heterozygous HNF1A and HNF4A mutations in two siblings with childhood-onset diabetes.
2145 23551881 Monogenic diabetes due to mutations in the transcription factor genes hepatocyte nuclear factor 1A (HNF1A) and HNF4A is characterized by islet cell antibody negative, familial diabetes with residual insulin secretion.
2146 23551881 We report two sisters with childhood onset diabetes who are both heterozygous for the most common mutation in each of two transcription factors, HNF1A, and HNF4A.
2147 23551881 Both sisters inherited the HNF4A gene mutation R127W from their mother and the HNF1A gene mutation P291fsinsC (c.872dup) from their father.
2148 23551881 Digenic inheritance of HNF1A and HNF4A mutations is very rare and has only been reported in two families where conclusive evidence for the pathogenicity of their mutations was lacking.
2149 23551881 Follow-up studies in this family co-segregating the two most commonly reported HNF1A/HNF4A mutations will be informative for understanding the effect of digenic inheritance upon phenotypic severity and response to sulfonylurea therapy.
2150 23551881 Digenic heterozygous HNF1A and HNF4A mutations in two siblings with childhood-onset diabetes.
2151 23551881 Monogenic diabetes due to mutations in the transcription factor genes hepatocyte nuclear factor 1A (HNF1A) and HNF4A is characterized by islet cell antibody negative, familial diabetes with residual insulin secretion.
2152 23551881 We report two sisters with childhood onset diabetes who are both heterozygous for the most common mutation in each of two transcription factors, HNF1A, and HNF4A.
2153 23551881 Both sisters inherited the HNF4A gene mutation R127W from their mother and the HNF1A gene mutation P291fsinsC (c.872dup) from their father.
2154 23551881 Digenic inheritance of HNF1A and HNF4A mutations is very rare and has only been reported in two families where conclusive evidence for the pathogenicity of their mutations was lacking.
2155 23551881 Follow-up studies in this family co-segregating the two most commonly reported HNF1A/HNF4A mutations will be informative for understanding the effect of digenic inheritance upon phenotypic severity and response to sulfonylurea therapy.
2156 23551881 Digenic heterozygous HNF1A and HNF4A mutations in two siblings with childhood-onset diabetes.
2157 23551881 Monogenic diabetes due to mutations in the transcription factor genes hepatocyte nuclear factor 1A (HNF1A) and HNF4A is characterized by islet cell antibody negative, familial diabetes with residual insulin secretion.
2158 23551881 We report two sisters with childhood onset diabetes who are both heterozygous for the most common mutation in each of two transcription factors, HNF1A, and HNF4A.
2159 23551881 Both sisters inherited the HNF4A gene mutation R127W from their mother and the HNF1A gene mutation P291fsinsC (c.872dup) from their father.
2160 23551881 Digenic inheritance of HNF1A and HNF4A mutations is very rare and has only been reported in two families where conclusive evidence for the pathogenicity of their mutations was lacking.
2161 23551881 Follow-up studies in this family co-segregating the two most commonly reported HNF1A/HNF4A mutations will be informative for understanding the effect of digenic inheritance upon phenotypic severity and response to sulfonylurea therapy.
2162 23551881 Digenic heterozygous HNF1A and HNF4A mutations in two siblings with childhood-onset diabetes.
2163 23551881 Monogenic diabetes due to mutations in the transcription factor genes hepatocyte nuclear factor 1A (HNF1A) and HNF4A is characterized by islet cell antibody negative, familial diabetes with residual insulin secretion.
2164 23551881 We report two sisters with childhood onset diabetes who are both heterozygous for the most common mutation in each of two transcription factors, HNF1A, and HNF4A.
2165 23551881 Both sisters inherited the HNF4A gene mutation R127W from their mother and the HNF1A gene mutation P291fsinsC (c.872dup) from their father.
2166 23551881 Digenic inheritance of HNF1A and HNF4A mutations is very rare and has only been reported in two families where conclusive evidence for the pathogenicity of their mutations was lacking.
2167 23551881 Follow-up studies in this family co-segregating the two most commonly reported HNF1A/HNF4A mutations will be informative for understanding the effect of digenic inheritance upon phenotypic severity and response to sulfonylurea therapy.
2168 23551881 Digenic heterozygous HNF1A and HNF4A mutations in two siblings with childhood-onset diabetes.
2169 23551881 Monogenic diabetes due to mutations in the transcription factor genes hepatocyte nuclear factor 1A (HNF1A) and HNF4A is characterized by islet cell antibody negative, familial diabetes with residual insulin secretion.
2170 23551881 We report two sisters with childhood onset diabetes who are both heterozygous for the most common mutation in each of two transcription factors, HNF1A, and HNF4A.
2171 23551881 Both sisters inherited the HNF4A gene mutation R127W from their mother and the HNF1A gene mutation P291fsinsC (c.872dup) from their father.
2172 23551881 Digenic inheritance of HNF1A and HNF4A mutations is very rare and has only been reported in two families where conclusive evidence for the pathogenicity of their mutations was lacking.
2173 23551881 Follow-up studies in this family co-segregating the two most commonly reported HNF1A/HNF4A mutations will be informative for understanding the effect of digenic inheritance upon phenotypic severity and response to sulfonylurea therapy.
2174 23551881 Digenic heterozygous HNF1A and HNF4A mutations in two siblings with childhood-onset diabetes.
2175 23551881 Monogenic diabetes due to mutations in the transcription factor genes hepatocyte nuclear factor 1A (HNF1A) and HNF4A is characterized by islet cell antibody negative, familial diabetes with residual insulin secretion.
2176 23551881 We report two sisters with childhood onset diabetes who are both heterozygous for the most common mutation in each of two transcription factors, HNF1A, and HNF4A.
2177 23551881 Both sisters inherited the HNF4A gene mutation R127W from their mother and the HNF1A gene mutation P291fsinsC (c.872dup) from their father.
2178 23551881 Digenic inheritance of HNF1A and HNF4A mutations is very rare and has only been reported in two families where conclusive evidence for the pathogenicity of their mutations was lacking.
2179 23551881 Follow-up studies in this family co-segregating the two most commonly reported HNF1A/HNF4A mutations will be informative for understanding the effect of digenic inheritance upon phenotypic severity and response to sulfonylurea therapy.
2180 23616187 Hepatocyte nuclear factor 1 alpha (HNF1A) mutations cause maturity-onset diabetes of the young (MODY) type 3.
2181 23647541 According to their different action mechanisms or functions, NR superfamily has been classified into seven families: NR1 (thyroid hormone like), NR2 (HNF4-like), NR3 (estrogen like), NR4 (nerve growth factor IB-like), NR5 (fushi tarazu-F1 like), NR6 (germ cell nuclear factor like), and NR0 (knirps or DAX like).
2182 23665043 Hepatocyte nuclear factor 4α regulates the expression of the murine pyruvate carboxylase gene through the HNF4-specific binding motif in its proximal promoter.
2183 23761103 Silencing either of these MODY genes (Hnf1a and Neurod1) mimicked the cellular phenotype caused by miR-24 overexpression, whereas restoring their expression rescued β-cell function.
2184 23771925 Prevalence, characteristics and clinical diagnosis of maturity onset diabetes of the young due to mutations in HNF1A, HNF4A, and glucokinase: results from the SEARCH for Diabetes in Youth.
2185 23878349 Mutations in the GCK and HNF1A/4 A genes account for up to 80% of all MODY cases.
2186 23878349 In contrast, mutations in the genes encoding the transcription factors HNF1A and HNF4A cause a progressive insulin secretory defect and hyperglycaemia that can lead to vascular complications.
2187 15615695 RSK4 and PAK5 are novel candidate genes in diabetic rat kidney and brain.
2188 15615695 In multiple ChIP assays, ribosomal S6 kinase 4 (RSK4) and p21-activated kinase 5 (PAK5) were confirmed, and in vitro binding of HNF4alpha was evidenced by electrophoretic mobility shift assays (EMSA) using oligonucleotides, which harbor novel binding sites.
2189 15615695 We also used EMSA to probe for binding sites in promoters of HNF1alpha, apolipoprotein B, alpha1-antitrypsin, and angiotensinogen.
2190 15615695 We further studied RSK4 and PAK5 kinase expression in streptozotocin-induced diabetic rat kidney and brain and observed significant repression of HNF4alpha, RSK4, and PAK5 as determined by quantitative real-time reverse transcriptase-polymerase chain reaction.
2191 15615695 RSK4 and PAK5 may provide a molecular rationale for late-stage complications in disease, and further studies are warranted to explore these targets for the treatment of diabetic nephro- and neuropathy, frequently seen in patients with HNF4alpha dysfunction.
2192 15615695 RSK4 and PAK5 are novel candidate genes in diabetic rat kidney and brain.
2193 15615695 In multiple ChIP assays, ribosomal S6 kinase 4 (RSK4) and p21-activated kinase 5 (PAK5) were confirmed, and in vitro binding of HNF4alpha was evidenced by electrophoretic mobility shift assays (EMSA) using oligonucleotides, which harbor novel binding sites.
2194 15615695 We also used EMSA to probe for binding sites in promoters of HNF1alpha, apolipoprotein B, alpha1-antitrypsin, and angiotensinogen.
2195 15615695 We further studied RSK4 and PAK5 kinase expression in streptozotocin-induced diabetic rat kidney and brain and observed significant repression of HNF4alpha, RSK4, and PAK5 as determined by quantitative real-time reverse transcriptase-polymerase chain reaction.
2196 15615695 RSK4 and PAK5 may provide a molecular rationale for late-stage complications in disease, and further studies are warranted to explore these targets for the treatment of diabetic nephro- and neuropathy, frequently seen in patients with HNF4alpha dysfunction.
2197 15615695 RSK4 and PAK5 are novel candidate genes in diabetic rat kidney and brain.
2198 15615695 In multiple ChIP assays, ribosomal S6 kinase 4 (RSK4) and p21-activated kinase 5 (PAK5) were confirmed, and in vitro binding of HNF4alpha was evidenced by electrophoretic mobility shift assays (EMSA) using oligonucleotides, which harbor novel binding sites.
2199 15615695 We also used EMSA to probe for binding sites in promoters of HNF1alpha, apolipoprotein B, alpha1-antitrypsin, and angiotensinogen.
2200 15615695 We further studied RSK4 and PAK5 kinase expression in streptozotocin-induced diabetic rat kidney and brain and observed significant repression of HNF4alpha, RSK4, and PAK5 as determined by quantitative real-time reverse transcriptase-polymerase chain reaction.
2201 15615695 RSK4 and PAK5 may provide a molecular rationale for late-stage complications in disease, and further studies are warranted to explore these targets for the treatment of diabetic nephro- and neuropathy, frequently seen in patients with HNF4alpha dysfunction.