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Gene Information

Gene symbol: G6PC

Gene name: glucose-6-phosphatase, catalytic subunit

HGNC ID: 4056

Synonyms: GSD1a

Related Genes

# Gene Symbol Number of hits
1 ABCB11 1 hits
2 APLP2 1 hits
3 CARHSP1 1 hits
4 CCR2 1 hits
5 CD4 1 hits
6 CD8A 1 hits
7 CHGA 1 hits
8 CNBP 1 hits
9 CPE 1 hits
10 CREB1 1 hits
11 CREBBP 1 hits
12 CTGF 1 hits
13 CTLA4 1 hits
14 FASN 1 hits
15 FOXA2 1 hits
16 FOXO1 1 hits
17 G6PC2 1 hits
18 G6PC3 1 hits
19 GAD1 1 hits
20 GAD2 1 hits
21 GFAP 1 hits
22 GSR 1 hits
23 H6PD 1 hits
24 HFE 1 hits
25 HIF1A 1 hits
26 HLA-A 1 hits
27 HNF4A 1 hits
28 HSPD1 1 hits
29 IAPP 1 hits
30 IFNG 1 hits
31 IGFBP1 1 hits
32 INS 1 hits
33 INSR 1 hits
34 MAFA 1 hits
35 MICB 1 hits
36 PAX6 1 hits
37 PCK1 1 hits
38 PCK2 1 hits
39 PDX1 1 hits
40 PHOX2B 1 hits
41 PPARG 1 hits
42 PPARGC1A 1 hits
43 PTPRN 1 hits
44 PTPRN2 1 hits
45 RNF128 1 hits
46 SCN5A 1 hits
47 SETD2 1 hits
48 SLC37A4 1 hits
49 SPAG8 1 hits
50 SREBF1 1 hits
51 TLR4 1 hits

Related Sentences

# PMID Sentence
1 284505 The behaviour of uricaemia and purine metabolism in the glycogen storage disease type I, in the glutathione reductase variant, after ethanol ingestion, after fructose load, the levels of lipoproteins and triglycerides in gouty patients and the reason for their increase, have been taken into special consideration.
2 2160832 Hormonal responses of glucose-6-phosphatase catalytic unit studied by stopped-flow analysis.
3 2160832 To obtain insight regarding the mechanism(s) of response of the catalytic unit of glucose-6-phosphatase (D-glucose-6-P phosphohydrolase; EC 3.1.3.9) to glucocorticoid administration and insulin deprivation, the functional enzyme concentration E0 was estimated from presteady-state kinetics by the stopped-flow technique.
4 2160832 These results showed that insulin deprivation resulted in an increased formation of fully active glucose-6-phosphatase catalytic unit.
5 2160832 It was concluded that glucocorticoid administration may promote formation of catalytic units of glucose-6-phosphatase which are less active than the enzyme normally present or formed in response to insulin deprivation.
6 2160832 Hormonal responses of glucose-6-phosphatase catalytic unit studied by stopped-flow analysis.
7 2160832 To obtain insight regarding the mechanism(s) of response of the catalytic unit of glucose-6-phosphatase (D-glucose-6-P phosphohydrolase; EC 3.1.3.9) to glucocorticoid administration and insulin deprivation, the functional enzyme concentration E0 was estimated from presteady-state kinetics by the stopped-flow technique.
8 2160832 These results showed that insulin deprivation resulted in an increased formation of fully active glucose-6-phosphatase catalytic unit.
9 2160832 It was concluded that glucocorticoid administration may promote formation of catalytic units of glucose-6-phosphatase which are less active than the enzyme normally present or formed in response to insulin deprivation.
10 8574017 Abnormally low hepatic glucose-6-phosphatase activity is found in human genetic deficiencies i.e. glycogen storage disease type I and in cases of developmental delay, found predominantly in preterm infants.
11 8865366 Expression and distribution of glucose-6-phosphatase catalytic subunit messenger RNA and its changes in the diabetic state.
12 9341134 Metabolic impact of adenovirus-mediated overexpression of the glucose-6-phosphatase catalytic subunit in hepatocytes.
13 9689059 Hepatocyte nuclear factor-1 acts as an accessory factor to enhance the inhibitory action of insulin on mouse glucose-6-phosphatase gene transcription.
14 9689059 Transcription of the gene encoding the glucose-6-phosphatase catalytic subunit (G6Pase) is stimulated by cAMP and glucocorticoids whereas insulin strongly inhibits both this induction and basal G6Pase gene transcription.
15 9813078 Perturbation of fuel homeostasis caused by overexpression of the glucose-6-phosphatase catalytic subunit in liver of normal rats.
16 10078553 Molecular cloning of a pancreatic islet-specific glucose-6-phosphatase catalytic subunit-related protein.
17 10078553 A pancreatic islet-specific glucose-6-phosphatase-related protein (IGRP) was cloned using a subtractive cDNA expression cloning procedure from mouse insulinoma tissue.
18 10078553 Whereas the liver glucose-6-phosphatase showed activity in these transfection systems, the IGRP failed to show glucose phosphotransferase or phosphatase activity with p-nitrophenol phosphate, inorganic pyrophosphate, or a range of sugar phosphates hydrolyzed by the liver enzyme.
19 10078554 Structure and promoter activity of an islet-specific glucose-6-phosphatase catalytic subunit-related gene.
20 10078554 Arden and associates have described the cloning of a novel cDNA that encodes an islet-specific G-6-Pase catalytic subunit-related protein (IGRP) (Arden SD, Zahn T, Steegers S, Webb S, Bergman B, O'Brien RM, Hutton JC: Molecular cloning of a pancreatic islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP).
21 10078554 Structure and promoter activity of an islet-specific glucose-6-phosphatase catalytic subunit-related gene.
22 10078554 Arden and associates have described the cloning of a novel cDNA that encodes an islet-specific G-6-Pase catalytic subunit-related protein (IGRP) (Arden SD, Zahn T, Steegers S, Webb S, Bergman B, O'Brien RM, Hutton JC: Molecular cloning of a pancreatic islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP).
23 10480625 Conservation of an insulin response unit between mouse and human glucose-6-phosphatase catalytic subunit gene promoters: transcription factor FKHR binds the insulin response sequence.
24 10480625 Because overexpression of the glucose-6-phosphatase catalytic subunit (G-6-Pase) in both type 1 and type 2 diabetes may contribute to the characteristic increased rate of hepatic glucose production, we have investigated whether the insulin response unit (IRU) identified in the mouse G-6-Pase promoter is conserved in the human promoter.
25 10480625 We have previously shown that the accessory factor binding region A is hepatocyte nuclear factor-1, and we show here that the forkhead protein FKHR is a candidate for the insulin-responsive transcription factor binding region B.
26 10480625 Conservation of an insulin response unit between mouse and human glucose-6-phosphatase catalytic subunit gene promoters: transcription factor FKHR binds the insulin response sequence.
27 10480625 Because overexpression of the glucose-6-phosphatase catalytic subunit (G-6-Pase) in both type 1 and type 2 diabetes may contribute to the characteristic increased rate of hepatic glucose production, we have investigated whether the insulin response unit (IRU) identified in the mouse G-6-Pase promoter is conserved in the human promoter.
28 10480625 We have previously shown that the accessory factor binding region A is hepatocyte nuclear factor-1, and we show here that the forkhead protein FKHR is a candidate for the insulin-responsive transcription factor binding region B.
29 10694370 Stable overexpression of the glucose-6-phosphatase catalytic subunit attenuates glucose sensitivity of insulin secretion from a mouse pancreatic beta-cell line.
30 10694370 Glucose-6-phosphatase (G-6-Pase) hydrolyzes glucose-6-phosphate to glucose, reciprocal with the so-called glucose sensor, glucokinase, in pancreatic beta cells.
31 10694370 This particular experimental manipulation shows that the possibility exists of modulating glucose-stimulated insulin release by thoroughly altering glucose cycling at the glucokinase/G-6-Pase step.
32 11121425 The clinical manifestations of type 1 glycogen storage disease (GSD-1) in patients deficient in the glucose-6-phosphatase (G6Pase) system (e.g. growth retardation, hepatomegaly, hyperlipidemia, and renal dysfunction) are shared by Hnf1alpha(-/-) mice deficient of a transcriptional activator, hepatocyte nuclear factor 1alpha (HNF1alpha).
33 11121425 Deficiencies in G6Pase and G6PT cause GSD-1a and GSD-1b, respectively.
34 11121425 The clinical manifestations of type 1 glycogen storage disease (GSD-1) in patients deficient in the glucose-6-phosphatase (G6Pase) system (e.g. growth retardation, hepatomegaly, hyperlipidemia, and renal dysfunction) are shared by Hnf1alpha(-/-) mice deficient of a transcriptional activator, hepatocyte nuclear factor 1alpha (HNF1alpha).
35 11121425 Deficiencies in G6Pase and G6PT cause GSD-1a and GSD-1b, respectively.
36 11246869 Characterization of the mouse islet-specific glucose-6-phosphatase catalytic subunit-related protein gene promoter by in situ footprinting: correlation with fusion gene expression in the islet-derived betaTC-3 and hamster insulinoma tumor cell lines.
37 11246869 To begin to investigate the molecular basis for the islet-specific expression of the IGRP gene, a series of truncated IGRP-chloramphenicol acetyltransferase (CAT) fusion genes were transiently transfected into the islet-derived mouse betaTC-3 and hamster insulinoma tumor cell lines.
38 11246869 The data suggest that hepatocyte nuclear factor 3 may be important for basal IGRP gene expression, as it is for glucagon, GLUT2, and Pdx-1 gene expression.
39 11940106 Identification of two novel and potent competitive inhibitors of the glucose-6-phosphatase catalytic protein.
40 12160694 Diabetes mellitus and glycogen storage disease type I (GSDI) may initially appear disparate in metabolic profile: one characterized by uncontrolled hyperglycaemia due to disturbed insulin function and the other by fasting hypoglycaemia caused by impaired gluconeogenesis and glycogenolysis.
41 12160694 DAG plays an important role in the intrarenal renin-angiotensin system via the protein kinase C pathway.
42 12815107 Here, we reveal that the autoantigen targeted by a prevalent population of pathogenic CD8+ T cells in nonobese diabetic mice is islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP).
43 14722102 Enzymatic characterization of the pancreatic islet-specific glucose-6-phosphatase-related protein (IGRP).
44 14722102 Here we present evidence that the previously identified islet-specific glucose-6-phosphatase-related protein (IGRP) is indeed the major islet glucose-6-phosphatase.
45 14722102 These data demonstrate that IGRP is likely the authentic islet-specific glucose-6-phosphatase catalytic subunit, and selective inhibitors to this molecule can be obtained.
46 14722102 IGRP inhibitors may be an attractive new approach for the treatment of insulin secretion defects in type 2 diabetes.
47 15180990 Differential regulation of islet-specific glucose-6-phosphatase catalytic subunit-related protein gene transcription by Pax-6 and Pdx-1.
48 15180990 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is selectively expressed in islet beta cells and is a major autoantigen in a mouse model of type I diabetes.
49 15180990 The analysis of IGRP-chloramphenicol acetyltransferase (CAT) fusion gene expression through transient transfection of islet-derived betaTC-3 cells revealed that a promoter region, located between -273 and -254, is essential for high IGRP-CAT fusion gene expression.
50 15180990 Additional experiments revealed a second non-consensus Pax-6 binding site in the -306/-274 IGRP promoter region.
51 15180990 Gel retardation assays revealed that another islet-enriched transcription factor, namely Pdx-1, binds four non-consensus elements in the IGRP promoter.
52 15180990 Although chromatin immunoprecipitation assays show that both Pax-6 and Pdx-1 bind to the IGRP promoter within intact cells, in contrast to the critical role of these factors in beta cell-specific insulin gene expression, IGRP gene transcription appears to require Pax-6 but not Pdx-1.
53 15180990 Differential regulation of islet-specific glucose-6-phosphatase catalytic subunit-related protein gene transcription by Pax-6 and Pdx-1.
54 15180990 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is selectively expressed in islet beta cells and is a major autoantigen in a mouse model of type I diabetes.
55 15180990 The analysis of IGRP-chloramphenicol acetyltransferase (CAT) fusion gene expression through transient transfection of islet-derived betaTC-3 cells revealed that a promoter region, located between -273 and -254, is essential for high IGRP-CAT fusion gene expression.
56 15180990 Additional experiments revealed a second non-consensus Pax-6 binding site in the -306/-274 IGRP promoter region.
57 15180990 Gel retardation assays revealed that another islet-enriched transcription factor, namely Pdx-1, binds four non-consensus elements in the IGRP promoter.
58 15180990 Although chromatin immunoprecipitation assays show that both Pax-6 and Pdx-1 bind to the IGRP promoter within intact cells, in contrast to the critical role of these factors in beta cell-specific insulin gene expression, IGRP gene transcription appears to require Pax-6 but not Pdx-1.
59 15220199 The proximal islet-specific glucose-6-phosphatase catalytic subunit-related protein autoantigen promoter is sufficient to initiate but not maintain transgene expression in mouse islets in vivo.
60 15220199 We have previously reported the discovery of an islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) that is predominantly expressed in islet beta-cells.
61 15220199 The analysis of IGRP-chloramphenicol acetyltransferase (CAT) fusion gene expression in transiently transfected islet-derived hamster insulinoma tumor and betaTC-3 cells revealed that the promoter region located between -306 and +3 confers high-level reporter gene expression.
62 15220199 The proximal islet-specific glucose-6-phosphatase catalytic subunit-related protein autoantigen promoter is sufficient to initiate but not maintain transgene expression in mouse islets in vivo.
63 15220199 We have previously reported the discovery of an islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) that is predominantly expressed in islet beta-cells.
64 15220199 The analysis of IGRP-chloramphenicol acetyltransferase (CAT) fusion gene expression in transiently transfected islet-derived hamster insulinoma tumor and betaTC-3 cells revealed that the promoter region located between -306 and +3 confers high-level reporter gene expression.
65 15557165 Individual nonobese diabetic mice exhibit unique patterns of CD8+ T cell reactivity to three islet antigens, including the newly identified widely expressed dystrophia myotonica kinase.
66 15557165 Spontaneous autoimmune diabetes development in NOD mice requires both CD8(+) and CD4(+) T cells.
67 15557165 Although the Ags for G9C8 and 8.3 are known to be insulin and islet-specific glucose-6-phosphatase catalytic subunit-related protein, respectively, only mimotope peptides had previously been identified for AI4.
68 15557165 Screening of a combinatorial peptide library in positional scanning format led to the identification of a peptide derived from dystrophia myotonica kinase (DMK) that is recognized by AI4-like T cells.
69 15591035 Transcriptional regulation of glucose-6-phosphatase catalytic subunit promoter by insulin and glucose in the carnivorous fish, Sparus aurata.
70 15591035 Increase in glucose-6-phosphatase catalytic subunit (G6Pase, G6pc) transcription enhances hepatic glucose production in non-insulin-dependent diabetes mellitus (NIDDM).
71 15591035 Transfection experiments in HepG2 cells showed that insulin repressed S. aurata G6pc under high-glucose conditions.
72 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).
73 15591035 No direct relationship was found between PGC-1alpha coactivation of HNF-4alpha transactivation and the repressive effect of insulin.
74 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.
75 15591035 Transcriptional regulation of glucose-6-phosphatase catalytic subunit promoter by insulin and glucose in the carnivorous fish, Sparus aurata.
76 15591035 Increase in glucose-6-phosphatase catalytic subunit (G6Pase, G6pc) transcription enhances hepatic glucose production in non-insulin-dependent diabetes mellitus (NIDDM).
77 15591035 Transfection experiments in HepG2 cells showed that insulin repressed S. aurata G6pc under high-glucose conditions.
78 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).
79 15591035 No direct relationship was found between PGC-1alpha coactivation of HNF-4alpha transactivation and the repressive effect of insulin.
80 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.
81 15591035 Transcriptional regulation of glucose-6-phosphatase catalytic subunit promoter by insulin and glucose in the carnivorous fish, Sparus aurata.
82 15591035 Increase in glucose-6-phosphatase catalytic subunit (G6Pase, G6pc) transcription enhances hepatic glucose production in non-insulin-dependent diabetes mellitus (NIDDM).
83 15591035 Transfection experiments in HepG2 cells showed that insulin repressed S. aurata G6pc under high-glucose conditions.
84 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).
85 15591035 No direct relationship was found between PGC-1alpha coactivation of HNF-4alpha transactivation and the repressive effect of insulin.
86 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.
87 15591035 Transcriptional regulation of glucose-6-phosphatase catalytic subunit promoter by insulin and glucose in the carnivorous fish, Sparus aurata.
88 15591035 Increase in glucose-6-phosphatase catalytic subunit (G6Pase, G6pc) transcription enhances hepatic glucose production in non-insulin-dependent diabetes mellitus (NIDDM).
89 15591035 Transfection experiments in HepG2 cells showed that insulin repressed S. aurata G6pc under high-glucose conditions.
90 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).
91 15591035 No direct relationship was found between PGC-1alpha coactivation of HNF-4alpha transactivation and the repressive effect of insulin.
92 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.
93 15591035 Transcriptional regulation of glucose-6-phosphatase catalytic subunit promoter by insulin and glucose in the carnivorous fish, Sparus aurata.
94 15591035 Increase in glucose-6-phosphatase catalytic subunit (G6Pase, G6pc) transcription enhances hepatic glucose production in non-insulin-dependent diabetes mellitus (NIDDM).
95 15591035 Transfection experiments in HepG2 cells showed that insulin repressed S. aurata G6pc under high-glucose conditions.
96 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).
97 15591035 No direct relationship was found between PGC-1alpha coactivation of HNF-4alpha transactivation and the repressive effect of insulin.
98 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.
99 15728483 Different diabetogenic potential of autoaggressive CD8+ clones associated with IFN-gamma-inducible protein 10 (CXC chemokine ligand 10) production but not cytokine expression, cytolytic activity, or homing characteristics.
100 15728483 From studies in animal models, CD8(+) T cells recognizing autoantigens such as islet-specific glucose-6-phosphatase catalytic subunit-related protein, insulin, or glutamic acid decarboxylase (GAD) are believed to play important roles in both the early and late phases of beta cell destruction.
101 15728483 In this study, we investigated the factors governing the diabetogenic potential of autoreactive CD8(+) clones isolated from spleens of NOD mice that had been immunized with GAD65(515-524) or insulin B-chain(15-23) peptides.
102 15728483 Although these two clones were identical in most phenotypic and functional aspects, for example cytokine production and killing of autologous beta cells, they differed in the expression of IFN-gamma-inducible protein-10, which was only produced at high levels by the insulin-specific clone, but not by the GAD65-specific clone, and other autoantigen-specific nonpathogenic CD8 T cell clones.
103 15728483 Interestingly, upon i.p. injection into neonatal mice, only the insulin B-chain(15-23)-reactive CD8(+) T clone accelerated diabetes in all recipients after 4 wk, although both insulin- and GAD-reactive clones homed to pancreas and pancreatic lymph nodes with similar kinetics.
104 15728483 Thus, secretion of IFN-gamma-inducible protein-10 by autoaggressive CD8(+) lymphocytes might determine their diabetogenic capacity by affecting recruitment of cells to the insulitic lesion.
105 15843527 Identification of CD4+ T cell-specific epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein: a novel beta cell autoantigen in type 1 diabetes.
106 15843527 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) has been identified as a novel CD8(+) T cell-specific autoantigen in NOD mice.
107 15843527 This study was undertaken to identify MHC class II-specific CD4(+) T cell epitopes of IGRP.
108 15843527 Experiments using purified CD4(+) and CD8(+) T cells from IGRP peptide-primed mice also showed a predominant CD4(+) T cell response with no significant activation of CD8(+) T cells.
109 15843527 T cells from P1-, P3-, and P7-primed mice secreted both IFN-gamma and IL-10 cytokines, whereas P2-primed cells secreted only IFN-gamma.
110 15843527 In summary, we have identified two I-A(g7)-restricted CD4(+) T cell epitopes of IGRP that can modulate and prevent the development of diabetes in NOD mice.
111 15843527 These results provide the first evidence on the role of IGRP-specific, MHC class II-restricted CD4(+) T cells in disease protection and may help in the development of novel therapies for type 1 diabetes.
112 15843527 Identification of CD4+ T cell-specific epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein: a novel beta cell autoantigen in type 1 diabetes.
113 15843527 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) has been identified as a novel CD8(+) T cell-specific autoantigen in NOD mice.
114 15843527 This study was undertaken to identify MHC class II-specific CD4(+) T cell epitopes of IGRP.
115 15843527 Experiments using purified CD4(+) and CD8(+) T cells from IGRP peptide-primed mice also showed a predominant CD4(+) T cell response with no significant activation of CD8(+) T cells.
116 15843527 T cells from P1-, P3-, and P7-primed mice secreted both IFN-gamma and IL-10 cytokines, whereas P2-primed cells secreted only IFN-gamma.
117 15843527 In summary, we have identified two I-A(g7)-restricted CD4(+) T cell epitopes of IGRP that can modulate and prevent the development of diabetes in NOD mice.
118 15843527 These results provide the first evidence on the role of IGRP-specific, MHC class II-restricted CD4(+) T cells in disease protection and may help in the development of novel therapies for type 1 diabetes.
119 15908957 Here, we examine the antidiabetogenic properties of altered peptide ligands of CD8+ T cells recognizing an epitope of islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP206-214), a prevalent population of autoreactive T cells in autoimmune diabetes.
120 15908957 We show that islet-associated CD8+ T cells in nonobese diabetic mice recognize numerous IGRP epitopes, and that these cells have a role in the outcome of protocols designed to induce IGRP206-214-specific tolerance.
121 15937548 We have carried out comprehensive studies of the diabetogenic CD8 T cell population that targets residues 206-214 of the beta cell antigen islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP(206-214)) and undergoes avidity maturation as disease progresses.
122 16295523 The autoantigens of Type 1A diabetes may be divided into subgroups based on their tissue distributions: Beta-cell-specific antigens like insulin, insulin derivatives, and IGRP (Islet-specific Glucose-6-phosphatase catalytic subunit Related Peptide); neurendocrine antigens such as carboxypeptidase H, insulinoma-associated antigen (IA-2), glutamic acid decarboxylase (GAD65), and carboxypeptidase E; and those expressed ubiquitously like heat shock protein 60 (a putative autoantigen for type 1 diabetes).
123 16374520 Irs1 and Irs2 signaling is essential for hepatic glucose homeostasis and systemic growth.
124 16374520 Insulin receptor substrates, including Irs1 and Irs2, integrate insulin and IGF receptor signals with heterologous pathways to coordinate growth and metabolism.
125 16374520 Since Irs2 is thought to be especially important in hepatic nutrient homeostasis, we deleted Irs2 [corrected] from hepatocytes of WT mice (called LKO) or genetically insulin-resistant Irs1-/- mice (called LKO::Irs1-/-).
126 16374520 Hepatic insulin receptors were functional in all the mice, but insulin signaling via the Akt-FoxO1 pathway was reduced in Irs1-/- and LKO liver, and undetected in LKO::Irs1-/- liver; however, Gsk3beta phosphorylation (Ser9) and hepatic glycogen stores were nearly normal in all of the mice.
127 16374520 Regardless, few hepatic genes changed expression significantly in Irs1-/- or LKO mice, whereas hundreds of genes changed in LKO::Irs1-/- mice--including elevated levels of Pck1, G6pc, Ppargc1, Pparg, and Igfbp1.
128 16374520 Thus, signals delivered by Irs1 or Irs2 regulate hepatic gene expression that coordinates glucose homeostasis and systemic growth.
129 16380490 No significant differences in plasma corticosterone, splenic CD4(+) or CD8(+) T-cell percentages, or functions of CD3(+) T-cells in vitro distinguished NOD wild-type from mutant mice.
130 16380490 This correlated with significantly reduced (P < 0.01) frequencies of insulin and islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD8(+) T-effector clonotypes in mutant mice.
131 16380490 In conclusion, metabolic disturbances elicited by a type 2 diabetes syndrome (insulin and/or leptin resistance, but not hypercorticism) appear to suppress type 1 diabetes development in NOD-Lepr(db-5J)/Lt by inhibiting activation of T-effector cells.
132 16424193 Early autoimmune destruction of islet grafts is associated with a restricted repertoire of IGRP-specific CD8+ T cells in diabetic nonobese diabetic mice.
133 16424193 In endogenous islets, CD8+ T cells specific for an islet-specific glucose-6-phosphatase catalytic subunit-related protein derived peptide (IGRP206-214) were the most prevalent T cells.
134 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD4+ T cells in human subjects.
135 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is recognized as a major autoantigen for autoimmune type 1 diabetes (T1D) in the NOD mouse model.
136 16493034 This study was undertaken to examine CD4+ T cell responses toward IGRP in human subjects.
137 16493034 The tetramer-guided epitope mapping approach was used to identify IGRP-specific CD4+ T cell epitopes.
138 16493034 More than 80% of subjects with either DRB1*0401 or DRB1*0301 haplotype have IGRP-specific CD4+ T cell responses for at least one IGRP epitope.
139 16493034 IGRP-specific T cells from both healthy and T1D groups produce both gamma-IFN and IL-10.
140 16493034 DRA1*0101/DRB1*0401 IGRP(247-259)-restricted T cells also show cross-reactivity to an epitope derived from liver/kidney glucose-6-phosphatase.
141 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD4+ T cells in human subjects.
142 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is recognized as a major autoantigen for autoimmune type 1 diabetes (T1D) in the NOD mouse model.
143 16493034 This study was undertaken to examine CD4+ T cell responses toward IGRP in human subjects.
144 16493034 The tetramer-guided epitope mapping approach was used to identify IGRP-specific CD4+ T cell epitopes.
145 16493034 More than 80% of subjects with either DRB1*0401 or DRB1*0301 haplotype have IGRP-specific CD4+ T cell responses for at least one IGRP epitope.
146 16493034 IGRP-specific T cells from both healthy and T1D groups produce both gamma-IFN and IL-10.
147 16493034 DRA1*0101/DRB1*0401 IGRP(247-259)-restricted T cells also show cross-reactivity to an epitope derived from liver/kidney glucose-6-phosphatase.
148 16493087 In both humans and NOD mice, particular MHC genes are primary contributors to development of the autoreactive CD4+ and CD8+ T cell responses against pancreatic beta cells that cause type 1 diabetes (T1D).
149 16493087 In this study, we show that transgenic expression in NOD mice of HLA-A*0201, in the absence of murine class I MHC molecules, is sufficient to mediate autoreactive CD8+ T cell responses contributing to T1D development.
150 16493087 CD8+ T cells from the transgenic mice are cytotoxic to murine and human HLA-A*0201-positive islet cells.
151 16493087 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is one of several important T1D autoantigens in standard NOD mice.
152 16493087 Three IGRP-derived peptides were identified as targets of diabetogenic HLA-A*0201-restricted T cells in our NOD transgenic stock.
153 16520917 Alternative splicing of G6PC2, the gene coding for the islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP), results in differential expression in human thymus and spleen compared with pancreas.
154 16728432 We have shown that development of autoimmune diabetes in non-obese diabetic (NOD) mice involves prevalent recruitment of CD8+ T cells recognizing epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP).
155 16979383 We have identified for the first time an age-dependent spontaneous loss of tolerance to two self-antigenic epitopes derived from putative diabetes-associated antigens glutamic acid decarboxylase (GAD65) and glial fibrillary acidic protein (GFAP) in RIP-B7/DRB1*0404 HLA transgenic mice.
156 16979383 Diabetic and older non-diabetic mice exhibited a proliferative response to an immunodominant epitope from GAD65 (555-567) and also from GFAP (240-252) but not from an immunogenic epitope from diabetes-associated islet-specific glucose-6-phosphatase catalytic subunit-related protein.
157 16979383 Islet infiltrates in older non-diabetic mice and diabetic mice contain CD4(+)/FoxP3(+) cells and suggest the presence of a regulatory mechanism prior and during diabetic disease.
158 17065343 In an effort to identify novel epitopes, we used matrix-assisted algorithms to predict peptides of glial fibrillary acidic protein (GFAP), prepro-islet amyloid polypeptide (ppIAPP), and islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) that likely bind to HLA-A*0201 with a strong affinity and contain a COOH-terminal proteasomal cleavage site.
159 17065343 Seven peptides stabilized HLA-A*0201 expression in binding assays and were used to stimulate peripheral blood mononuclear cells and were evaluated for granzyme B secretion.
160 17065343 Other peptides recognized by type 1 diabetic or antibody-positive subjects included GFAP(143-151), IGRP(152-160), and GFAP(214-222).
161 17065343 These data implicate peptides of ppIAPP, GFAP, and IGRP as CTL epitopes for a heterogenous CD8(+) T-cell response in type 1 subjects and antibody-positive relatives.
162 17065344 To identify additional epitopes, HLA class I peptide affinity algorithms were used to identify a panel of peptides derived from the beta-cell proteins islet amyloid polypeptide (IAPP), islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP), insulin, insulinoma-associated antigen 2 (IA-2), and phogrin that were predicted to bind HLA-A*0201.
163 17065344 We identified peptides IAPP9-17, IGRP215-223, IGRP152-160, islet IA-2(172-180), and IA-2(482-490) as novel HLA-A*0201-restricted T-cell epitopes in type 1 diabetic patients.
164 17143326 In a study of NOD mice in this issue of the JCI, Krishnamurthy et al. show that the autoreactive T cell response to the autoantigen proinsulin lies upstream of that to islet-specific glucose-6-phosphatase catalytic subunit-related protein, suggesting that the pathogenic autoimmune response to proinsulin subsequently spreads to other antigens (see the related article beginning on page 3258).
165 17143333 Responses against islet antigens in NOD mice are prevented by tolerance to proinsulin but not IGRP.
166 17143333 T cells specific for proinsulin and islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) can induce T1D in NOD mice.
167 17143333 As cytotoxic T cells specific for IGRP were not detected in transgenic NOD mice tolerant to proinsulin, we determined that immune responses against proinsulin are necessary for IGRP-specific T cells to develop.
168 17143333 On the other hand, transgenic overexpression of IGRP resulted in loss of intra-islet IGRP-specific T cells but did not protect NOD mice from insulitis or T1D, providing direct evidence that the response against IGRP is downstream of the response to proinsulin.
169 17143333 Our results suggest that pathogenic proinsulin-specific immunity in NOD mice subsequently spreads to other antigens such as IGRP.
170 17265032 Deletion of the gene encoding the islet-specific glucose-6-phosphatase catalytic subunit-related protein autoantigen results in a mild metabolic phenotype.
171 17327428 Although CD4+ T-cell assays have met with limited success, CD8+ T-cells are increasingly recognized as key actors in the diabetes of the NOD mouse.
172 17327428 Taking advantage of a panel of HLA-A2-restricted beta-cell epitopes derived from preproinsulin, GAD, and islet glucose-6-phosphatase catalytic subunit-related protein (IGRP), we have implemented an islet-specific CD8+ T-cell interferon-gamma enzyme-linked immunospot (ISL8Spot) assay.
173 17376821 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is an important antigenic target of diabetogenic CD8 cells in standard NOD mice.
174 17376840 Human clonal CD8 autoreactivity to an IGRP islet epitope shared between mice and men.
175 17376840 The aim of this study was to assess whether an epitope derived from the islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP), IGRP(265-273,) which has recently been identified as a target in non-obese diabetic (NOD) mice and is fully homologous to the human epitope, is a target of human diabetogenic CD8(+) T cells.
176 17376840 We isolated a human CD8 T cell clone against this epitope, which confirms that this IGRP epitope is shared across species.
177 17395746 Although the frequency of nucleoprotein-specific CD8 T-cells in the pancreatic draining lymph node was comparable with the frequency of islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP)-specific T-cells, more IGRP-specific CD8 T-cells were found both systemically and in the islets where there was a fourfold increase.
178 17395746 Interestingly, and in contrast to nucleoprotein-specific CD8 T-cells, IGRP-specific T-cells showed increased CXCR3 expression.
179 17565413 Endoplasmic reticulum stress caused by overexpression of islet-specific glucose-6-phosphatase catalytic subunit-related protein in pancreatic Beta-cells.
180 17565413 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is an ER-resident protein that is specifically expressed in pancreatic beta-cells and is a major target of diabetogenic CD8(+) T cell responses in non-obese diabetic (NOD) mice.
181 17565413 We produced transgenic mice expressing human IGRP (hIGRP) under the control of rat insulin promoter (RIP) to study epitopes in hIGRP capable of driving diabetogenic human leukocyte antigen (HLA)-restricted CD8(+) T-cell responses in hIGRP/HLA transgenic NOD mice.
182 17565413 Endoplasmic reticulum stress caused by overexpression of islet-specific glucose-6-phosphatase catalytic subunit-related protein in pancreatic Beta-cells.
183 17565413 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is an ER-resident protein that is specifically expressed in pancreatic beta-cells and is a major target of diabetogenic CD8(+) T cell responses in non-obese diabetic (NOD) mice.
184 17565413 We produced transgenic mice expressing human IGRP (hIGRP) under the control of rat insulin promoter (RIP) to study epitopes in hIGRP capable of driving diabetogenic human leukocyte antigen (HLA)-restricted CD8(+) T-cell responses in hIGRP/HLA transgenic NOD mice.
185 17942825 Long-range enhancers are required to maintain expression of the autoantigen islet-specific glucose-6-phosphatase catalytic subunit-related protein in adult mouse islets in vivo.
186 18302224 The contrast agent is an MRI probe (MN-NRP-V7) that specifically labels CD8+ T-cells recognizing residues 206-214 of islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP(206-214)) in the context of the major histocompatibility complex (MHC) class I molecule H-2K(d).
187 18354167 Autoimmunity to both proinsulin and IGRP is required for diabetes in nonobese diabetic 8.3 TCR transgenic mice.
188 18354167 T cells specific for proinsulin and islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP) induce diabetes in nonobese diabetic (NOD) mice.
189 18354167 TCR transgenic mice with CD8(+) T cells specific for IGRP(206-214) (NOD8.3 mice) develop accelerated diabetes that requires CD4(+) T cell help.
190 18354167 We previously showed that immune responses against proinsulin are necessary for IGRP(206-214)-specific CD8(+) T cells to expand.
191 18354167 This indicates that immunity to proinsulin is even required in the great majority of NOD8.3 mice that have a pre-existing repertoire of IGRP(206-214)-specific cells.
192 18354167 This suggests that islet inflammation can substitute for proinsulin-specific CD4(+) T cell help to activate IGRP(206-214)-specific T cells.
193 18451265 SNP rs560887 maps to intron 3 of the G6PC2 gene, which encodes glucose-6-phosphatase catalytic subunit-related protein (also known as IGRP), a protein selectively expressed in pancreatic islets.
194 18451265 We speculate that G6PC2 regulates FPG by modulating the set point for glucose-stimulated insulin secretion in pancreatic beta cells.
195 18521185 Variations in the G6PC2/ABCB11 genomic region are associated with fasting glucose levels.
196 18521185 The rs563694 SNP is located between the genes glucose-6-phosphatase catalytic subunit 2 (G6PC2) and ATP-binding cassette, subfamily B (MDR/TAP), member 11 (ABCB11).
197 18521185 Our results in combination with data reported in the literature suggest that G6PC2, a glucose-6-phosphatase almost exclusively expressed in pancreatic islet cells, may underlie variation in fasting glucose, though it is possible that ABCB11, which is expressed primarily in liver, may also contribute to such variation.
198 18753309 Foxa2 and MafA regulate islet-specific glucose-6-phosphatase catalytic subunit-related protein gene expression.
199 18753309 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP/G6PC2) is a major autoantigen in both mouse and human type 1 diabetes.
200 18753309 Chromatin immunoprecipitation (ChIP) assays have shown that the IGRP promoter binds the islet-enriched transcription factors Pax-6 and BETA2.
201 18753309 We show here, again using ChIP assays, that the IGRP promoter also binds the islet-enriched transcription factors MafA and Foxa2.
202 18753309 ChiP assays have shown that the islet-enriched transcription factor Pdx-1 also binds the IGRP promoter, but mutational analysis of four Pdx-1 binding sites in the proximal IGRP promoter revealed surprisingly little effect of Pdx-1 binding on IGRP fusion gene expression in betaTC-3 cells.
203 18753309 These data suggest that the same group of islet-enriched transcription factors, namely Pdx-1, Pax-6, MafA, BETA2, and Foxa2, directly or indirectly regulate expression of the two major autoantigens in type 1 diabetes.
204 18753309 Foxa2 and MafA regulate islet-specific glucose-6-phosphatase catalytic subunit-related protein gene expression.
205 18753309 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP/G6PC2) is a major autoantigen in both mouse and human type 1 diabetes.
206 18753309 Chromatin immunoprecipitation (ChIP) assays have shown that the IGRP promoter binds the islet-enriched transcription factors Pax-6 and BETA2.
207 18753309 We show here, again using ChIP assays, that the IGRP promoter also binds the islet-enriched transcription factors MafA and Foxa2.
208 18753309 ChiP assays have shown that the islet-enriched transcription factor Pdx-1 also binds the IGRP promoter, but mutational analysis of four Pdx-1 binding sites in the proximal IGRP promoter revealed surprisingly little effect of Pdx-1 binding on IGRP fusion gene expression in betaTC-3 cells.
209 18753309 These data suggest that the same group of islet-enriched transcription factors, namely Pdx-1, Pax-6, MafA, BETA2, and Foxa2, directly or indirectly regulate expression of the two major autoantigens in type 1 diabetes.
210 19060180 Role of the E3 ubiquitin ligase gene related to anergy in lymphocytes in glucose and lipid metabolism in the liver.
211 19060180 Gene related to anergy in lymphocytes (GRAIL) is an E3 ubiquitin ligase that regulates energy in T-lymphocytes.
212 19060180 Adenovirus-mediated transfer of a short hairpin RNA specific for GRAIL mRNA markedly reduced the amounts of GRAIL mRNA and protein in the liver.
213 19060180 The hepatic abundance of mRNAs for glucose-6-phosphatase, catalytic (a key enzyme in hepatic glucose production) and for sterol regulatory element-binding transcription factor 1 (an important transcriptional regulator of lipogenesis) was increased in the mice with hepatic GRAIL deficiency, possibly contributing to the metabolic abnormalities of these animals.
214 19188044 Several antigens such as insulin, glutamic acid decarboxylase (GAD) and islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP) are considered to take part in the autoimmune destructive process.
215 19188044 Because the role of GAD in the disease process of type 1 diabetes is still controversial, we investigated the disease phenotype upon in vivo induction of whole GAD65 reactivity using a GAD65 homo knockout NOD splenocytes to NOD-scid transfer system.
216 19188044 Splenocytes from recipients of KOT splenocytes produced IL-10 (/IFN-gamma) upon GAD65 stimulation, whereas those from recipients of WTT splenocytes did not.
217 19209463 A very significant fraction of islet-associated CD8 T cells in NOD mice recognize epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP), a non-essential endoplasmic reticulum-resident protein of unclear function.
218 19209463 IGRP is also a target of CD8 T cell responses in human T1D patients.
219 19209463 In NOD mice, most IGRP-reactive CD8 T cells target the IGRP(206-214) epitope and are diabetogenic.
220 19209463 In mice, Il2 polymorphisms control a negative feedback mechanism initiated by activated, IL2-producing autoreactive T cells in the pancreatic lymph nodes that increases the regulatory activity of CD4+CD25+ T cells.
221 19209463 Not all IGRP-reactive CD8 T cell clones are pathogenic, however, and we have evidence that some of these clonotypes are actually anti-diabetogenic.
222 19209463 We had previously shown that administration of altered peptide ligands (APL) targeting IGRP(206-214)-reactive CD8 T cells resulted in diabetes protection only at doses that did not delete low-avidity clones, suggesting a protective role for these clonotypes.
223 19209463 Here I briefly summarize work done by us and others indicating that a prevalent subset of autoreactive CD8 T-cells in the NOD mouse are major (albeit likely dispensable) players in the pathogenesis of spontaneous autoimmune diabetes in the NOD mouse; that these T cells are targets of genetic elements affording autoimmune disease susceptibility and resistance; that they can either be diabetogenic or anti-diabetogenic according to their avidity for peptide/MHC; and that they can serve as useful targets for therapeutic intervention.
224 19587243 Fasting hyperglycemia is not associated with increased expression of PEPCK or G6Pc in patients with Type 2 Diabetes.
225 19587243 Fasting hyperglycemia in patients with type 2 diabetes mellitus (T2DM) is attributed to increased hepatic gluconeogenesis, which has been ascribed to increased transcriptional expression of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase, catalytic (G6Pc).
226 19587243 In a second model, control and HFF rats were infused with somatostatin, followed by portal vein infusion of insulin and glucagon.
227 19587243 Surprisingly, the expression of PEPCK or G6Pc was not increased.
228 19587243 However, PEPCK and G6Pc expression remained unchanged.
229 19587243 Finally, in patients with T2DM, hepatic expression of PEPCK or G6Pc was not increased.
230 19587243 Thus, in contrast to current dogma, these data demonstrate that increased transcriptional expression of PEPCK1 and G6Pc does not account for increased gluconeogenesis and fasting hyperglycemia in patients with T2DM.
231 19587243 Fasting hyperglycemia is not associated with increased expression of PEPCK or G6Pc in patients with Type 2 Diabetes.
232 19587243 Fasting hyperglycemia in patients with type 2 diabetes mellitus (T2DM) is attributed to increased hepatic gluconeogenesis, which has been ascribed to increased transcriptional expression of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase, catalytic (G6Pc).
233 19587243 In a second model, control and HFF rats were infused with somatostatin, followed by portal vein infusion of insulin and glucagon.
234 19587243 Surprisingly, the expression of PEPCK or G6Pc was not increased.
235 19587243 However, PEPCK and G6Pc expression remained unchanged.
236 19587243 Finally, in patients with T2DM, hepatic expression of PEPCK or G6Pc was not increased.
237 19587243 Thus, in contrast to current dogma, these data demonstrate that increased transcriptional expression of PEPCK1 and G6Pc does not account for increased gluconeogenesis and fasting hyperglycemia in patients with T2DM.
238 19587243 Fasting hyperglycemia is not associated with increased expression of PEPCK or G6Pc in patients with Type 2 Diabetes.
239 19587243 Fasting hyperglycemia in patients with type 2 diabetes mellitus (T2DM) is attributed to increased hepatic gluconeogenesis, which has been ascribed to increased transcriptional expression of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase, catalytic (G6Pc).
240 19587243 In a second model, control and HFF rats were infused with somatostatin, followed by portal vein infusion of insulin and glucagon.
241 19587243 Surprisingly, the expression of PEPCK or G6Pc was not increased.
242 19587243 However, PEPCK and G6Pc expression remained unchanged.
243 19587243 Finally, in patients with T2DM, hepatic expression of PEPCK or G6Pc was not increased.
244 19587243 Thus, in contrast to current dogma, these data demonstrate that increased transcriptional expression of PEPCK1 and G6Pc does not account for increased gluconeogenesis and fasting hyperglycemia in patients with T2DM.
245 19587243 Fasting hyperglycemia is not associated with increased expression of PEPCK or G6Pc in patients with Type 2 Diabetes.
246 19587243 Fasting hyperglycemia in patients with type 2 diabetes mellitus (T2DM) is attributed to increased hepatic gluconeogenesis, which has been ascribed to increased transcriptional expression of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase, catalytic (G6Pc).
247 19587243 In a second model, control and HFF rats were infused with somatostatin, followed by portal vein infusion of insulin and glucagon.
248 19587243 Surprisingly, the expression of PEPCK or G6Pc was not increased.
249 19587243 However, PEPCK and G6Pc expression remained unchanged.
250 19587243 Finally, in patients with T2DM, hepatic expression of PEPCK or G6Pc was not increased.
251 19587243 Thus, in contrast to current dogma, these data demonstrate that increased transcriptional expression of PEPCK1 and G6Pc does not account for increased gluconeogenesis and fasting hyperglycemia in patients with T2DM.
252 19587243 Fasting hyperglycemia is not associated with increased expression of PEPCK or G6Pc in patients with Type 2 Diabetes.
253 19587243 Fasting hyperglycemia in patients with type 2 diabetes mellitus (T2DM) is attributed to increased hepatic gluconeogenesis, which has been ascribed to increased transcriptional expression of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase, catalytic (G6Pc).
254 19587243 In a second model, control and HFF rats were infused with somatostatin, followed by portal vein infusion of insulin and glucagon.
255 19587243 Surprisingly, the expression of PEPCK or G6Pc was not increased.
256 19587243 However, PEPCK and G6Pc expression remained unchanged.
257 19587243 Finally, in patients with T2DM, hepatic expression of PEPCK or G6Pc was not increased.
258 19587243 Thus, in contrast to current dogma, these data demonstrate that increased transcriptional expression of PEPCK1 and G6Pc does not account for increased gluconeogenesis and fasting hyperglycemia in patients with T2DM.
259 19587243 Fasting hyperglycemia is not associated with increased expression of PEPCK or G6Pc in patients with Type 2 Diabetes.
260 19587243 Fasting hyperglycemia in patients with type 2 diabetes mellitus (T2DM) is attributed to increased hepatic gluconeogenesis, which has been ascribed to increased transcriptional expression of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase, catalytic (G6Pc).
261 19587243 In a second model, control and HFF rats were infused with somatostatin, followed by portal vein infusion of insulin and glucagon.
262 19587243 Surprisingly, the expression of PEPCK or G6Pc was not increased.
263 19587243 However, PEPCK and G6Pc expression remained unchanged.
264 19587243 Finally, in patients with T2DM, hepatic expression of PEPCK or G6Pc was not increased.
265 19587243 Thus, in contrast to current dogma, these data demonstrate that increased transcriptional expression of PEPCK1 and G6Pc does not account for increased gluconeogenesis and fasting hyperglycemia in patients with T2DM.
266 19700406 Glucose-6-phosphatase catalytic subunit gene family.
267 19700406 The G6PC gene family contains three members, designated G6PC, G6PC2, and G6PC3.
268 19700406 Glucose-6-phosphatase catalytic subunit gene family.
269 19700406 The G6PC gene family contains three members, designated G6PC, G6PC2, and G6PC3.
270 19886740 Unexpectedly, the ratio of CD4(+):CD8(+) T cells was tightly controlled in the islets throughout diabetogenesis.
271 19886740 The frequency of IL-4(+) CD4(+) T cells started high but quickly fell to 3% of the population that was maintained with increasing inflammation.
272 19886740 A significant portion of the CD8(+) T cells were islet-specific glucose-6-phosphatase catalytic subunit-related protein specific in both male and female NOD mice and this population was antigen experienced and increased at high levels of islet inflammation.
273 20004937 Post-mortem heart sections were immunohistochemically stained for collagen types I and III and connective tissue growth factor (CTGF).
274 20004937 Genomic DNA was prepared from post-mortem samples, and genetic analysis was performed in the SCN5A, G6PC, PHOX2B, and CTGF genes.
275 20004937 Twenty-two dead in bed syndrome cases were identified and staining of heart sections for collagen I and III, and CTGF showed no differences between dead in bed syndrome cases and controls.
276 20004937 No genetic variants were found in G6PC, PHOX2B, and CTGF, and dead in bed syndrome cases were not associated with the G-945C CTGF promoter polymorphism.
277 20004937 Post-mortem heart sections were immunohistochemically stained for collagen types I and III and connective tissue growth factor (CTGF).
278 20004937 Genomic DNA was prepared from post-mortem samples, and genetic analysis was performed in the SCN5A, G6PC, PHOX2B, and CTGF genes.
279 20004937 Twenty-two dead in bed syndrome cases were identified and staining of heart sections for collagen I and III, and CTGF showed no differences between dead in bed syndrome cases and controls.
280 20004937 No genetic variants were found in G6PC, PHOX2B, and CTGF, and dead in bed syndrome cases were not associated with the G-945C CTGF promoter polymorphism.
281 20022654 Rare monogenic syndromes, such as alpha1-antitrypsin deficiency, glycogen storage disease type I, hemochromatosis, acute intermittent and cutanea tarda porphyria, as well as hereditary tyrosinemia type I are associated with a high risk of HCC.
282 20217518 Evidence for an autoimmune origin of T1D results from measurable islet beta-cell autoantibody directed against various autoantigens such as proinsulin or insulin itself, glutamic acid decarboxylase 65, the islet tyrosine phosphatase IA-2, and the islet-specific glucose-6-phosphatase catalytic subunit-related protein.
283 20220085 Toxin-coupled MHC class I tetramers can specifically ablate autoreactive CD8+ T cells and delay diabetes in nonobese diabetic mice.
284 20220085 We show that saporin-coupled tetramers can delete islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP)-reactive T cells in vitro and in vivo.
285 20220085 Finally, we show deletion at 8 wk of age of IGRP(+) CD8(+) T cells, but not dystophia myotonica kinase- or insulin B-reactive cells, significantly delays diabetes in NOD mice.
286 20439719 We monitored the recruitment of CD8(+) T cells specific for the prevalent diabetogenic epitope islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP)(206-214) in gene-targeted nonobese diabetic (NOD) mice expressing a T cell "invisible" IGRP(206-214) sequence.
287 20439719 These mice developed islet inflammation and diabetes with normal incidence and kinetics, but their inflammatory lesions could recruit neither naive (endogenous or exogenous) nor ex vivo-activated IGRP(206-214)-reactive CD8(+) T cells.
288 20439719 Conversely, IGRP(206-214)-reactive, but not nonautoreactive CD8(+) T cells rapidly homed to and accumulated in the inflamed islets of wild-type NOD mice.
289 21825122 Most studies with class I pMHC multimers used noncovalently linked peptides, which can allow unwanted CD8(+) T-cell activation as a result of peptide transfer to cellular MHC molecules.
290 21825122 To circumvent this problem, and given the role of self-reactive CD8(+) T cells in the development of type 1 diabetes, we designed a single-chain pMHC complex (scK(d).IGRP) by using the class I MHC molecule H-2K(d) and a covalently linked peptide derived from islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP(206-214)), a well established autoantigen in NOD mice.
291 21825122 X-ray diffraction studies revealed that the peptide is presented in the groove of the MHC molecule in canonical fashion, and it was also demonstrated that scK(d).IGRP tetramers bound specifically to cognate CD8(+) T cells.
292 21896930 Deletion of the G6pc2 gene encoding the islet-specific glucose-6-phosphatase catalytic subunit-related protein does not affect the progression or incidence of type 1 diabetes in NOD/ShiLtJ mice.
293 21990353 Here, we document for the first time that CARHSP1 is regulated by nutrient status in the liver and functions at the transcriptional level to negatively regulate gluconeogenic genes, including the glucose-6-phosphatase catalytic subunit (G6Pc) and phosphoenolpyruvate carboxykinase 1 (PEPCK1).
294 22069258 T cells target various antigens such as insulin, chromogranin A, glutamic acid decarboxylase and islet-specific glucose-6-phosphatase catalytic subunit-related protein.
295 22190647 Transgenic NOD mice that overexpress islet-specific glucose 6 phosphatase catalytic subunit-related protein (IGRP) in antigen-presenting cells (NOD-IGRP mice) have no IGRP-specific T cells.
296 22345013 Among 36 T2DM associated genes tested, 19 genes (including G6PC, CCR2B, CTLA4) displayed a similar expression pattern in both spontaneous and diet-induced T2DM models and were significantly up-regulated or down-regulated compared to controls.
297 22427377 Nonobese diabetic RIP-IL35 transgenic mice exhibited decreased islet infiltration with substantial reductions in the number of CD4(+) and CD8(+) T cells, and frequency of glucose-6-phosphatase catalytic subunit-related protein-specific CD8(+) T cells.
298 22549789 Overexpression of ERRγ induced Pck1 and G6PC gene expression and glucose production in primary hepatocytes, whereas abolition of ERRγ gene expression attenuated forskolin-mediated induction of gluconeogenic gene expression.
299 22549789 Deletion and mutation analyses of the Pck1 promoter showed that ERRγ directly regulates the Pck1 gene transcription via ERR response elements of the Pck1 promoter as confirmed by ChIP assay and in vivo imaging analysis.
300 22678909 This effect was not associated with significant immune changes in islet infiltrates, either in terms of cell composition or frequency and IFN-γ secretion of islet-reactive CD8(+) T cells recognizing the immunodominant epitopes insulin B(15-23) and islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP)(206-214).
301 22787137 Glucotoxicity induces glucose-6-phosphatase catalytic unit expression by acting on the interaction of HIF-1α with CREB-binding protein.
302 22787137 The induction of G6pc promoter activity by glucose was eliminated in the presence of small interfering RNA, targeting either the hypoxia-inducible factor (HIF)-1α or the CREB-binding protein (CBP).
303 22787137 Glucose increased the interaction of HIF-1α with CBP and the recruitment of HIF-1 on the G6pc promoter.
304 22787137 This mechanism leading to the induction of HIF-1 transcriptional activity may contribute to the increase of hepatic glucose production during type 2 diabetes.
305 22787137 Glucotoxicity induces glucose-6-phosphatase catalytic unit expression by acting on the interaction of HIF-1α with CREB-binding protein.
306 22787137 The induction of G6pc promoter activity by glucose was eliminated in the presence of small interfering RNA, targeting either the hypoxia-inducible factor (HIF)-1α or the CREB-binding protein (CBP).
307 22787137 Glucose increased the interaction of HIF-1α with CBP and the recruitment of HIF-1 on the G6pc promoter.
308 22787137 This mechanism leading to the induction of HIF-1 transcriptional activity may contribute to the increase of hepatic glucose production during type 2 diabetes.
309 22787137 Glucotoxicity induces glucose-6-phosphatase catalytic unit expression by acting on the interaction of HIF-1α with CREB-binding protein.
310 22787137 The induction of G6pc promoter activity by glucose was eliminated in the presence of small interfering RNA, targeting either the hypoxia-inducible factor (HIF)-1α or the CREB-binding protein (CBP).
311 22787137 Glucose increased the interaction of HIF-1α with CBP and the recruitment of HIF-1 on the G6pc promoter.
312 22787137 This mechanism leading to the induction of HIF-1 transcriptional activity may contribute to the increase of hepatic glucose production during type 2 diabetes.
313 22872234 In addition to global liquid chromatography-tandem mass spectrometry analysis, the targeted approach of multiple-reaction monitoring was used to quantitate the immunodominant K(d)-restricted T-cell epitope islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP)₂₀₆₋₂₁₄.
314 22908330 Autoantigen recognition is required for recruitment of IGRP(206-214)-autoreactive CD8+ T cells but is dispensable for tolerance.
315 22908330 Central and peripheral tolerance hinder the contribution of high-avidity clonotypes targeting residues 206-214 of islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP(206-214)) during the earliest stages of autoimmune diabetes.
316 22908330 In this study, we probe the molecular determinants and biochemical consequences of IGRP(206-214)/K(d) recognition by high-, intermediate-, and low-avidity autoreactive CD8+ T cells, and we investigate the effects of genetic IGRP(206-214) silencing on their developmental biology.
317 22908330 We find that differences in avidity for IGRP(206-214)/K(d) map to CDR1α and are associated with quantitative differences in CD3ε proline-rich sequence exposure and Nck recruitment.
318 22908330 Unexpectedly, we find that tolerance of high-avidity CD8+ T cells, unlike their activation and recruitment into the pancreas, is dissociated from recognition of IGRP(206-214), particularly in adult mice.
319 22983906 G6PC2, also known as islet-specific glucose 6-phosphatase catalytic subunit-related protein (IGRP), is a major target of autoreactive CD8(+) T cells in both diabetic human subjects and the non-obese diabetic (NOD) mouse.
320 22983906 However, in contrast to the abundant literature regarding the CD8(+) response to this antigen, much less is known about the potential involvement of IGRP-reactive CD4(+) T cells in diabetogenesis.
321 22983906 To address this issue, we immunized NOD mice with membranes from insect cells overexpressing full-length recombinant mouse IGRP and measured recall responses of purified CD4(+) T cells using a library of overlapping peptides encompassing the entire 355-aa primary sequence.
322 23155466 To address a destructive role for autoreactive CD8 T-cells in human disease, we assessed the pathogenicity of a CD8 T-cell clone derived from a T1D donor and specific for an HLA-A2-restricted epitope of islet-specific glucose-6-phosphatase catalytic-subunit related protein (IGRP).
323 23155466 HLA-A2/IGRP tetramer staining revealed a higher frequency of IGRP-specific CD8 T-cells in the peripheral blood of recent onset human individuals than of healthy donors.
324 23155466 IGRP(265-273)-specific CD8 T-cells that were cloned from the peripheral blood of a recent onset T1D individual were shown to secrete IFNγ and Granzyme B after antigen-specific activation and lyse HLA-A2-expressing murine islets in-vitro.
325 23155466 Using the HLA-A2 NOD-scid IL2rγ(null) mouse model, HLA-A2-restricted IGRP-specific CD8 T-cells induced a destructive insulitis.
326 23160528 We monitored the recruitment of islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP)₂₀₆₋₂₁₄-reactive CD8⁺ T cells into IGRP₂₀₆₋₂₁₄-competent and IGRP₂₀₆₋₂₁₄-deficient islet grafts in diabetic wild-type or IGRP₂₀₆₋₂₁₄(-/-) nonobese diabetic hosts (harboring either naive and memory T cells or only naive IGRP₂₀₆₋₂₁₄-specific T-cells, respectively).
327 23267038 Specific reduction of G6PT may contribute to downregulation of hepatic 11β-HSD1 in diabetic mice.
328 23267038 Pre-receptor activation of glucocorticoids via 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1 (HSD11B1)) has been identified as an important mediator of the metabolic syndrome.
329 23267038 Hexose-6-phosphate dehydrogenase (H6PDH) mediates 11β-HSD1 amplifying tissue glucocorticoid production by driving intracellular NADPH exposure to 11β-HSD1 and requires glucose-6-phosphate transporter (G6PT (SLC37A4)) to maintain its activity.
330 23267038 Here, we evaluated the possible role of G6PT antisense oligonucleotides (G6PT ASO) in the pre-receptor metabolism of glucocorticoids as related to glucose homeostasis and insulin tolerance by examining the production of 11β-HSD1 and H6PDH in both male db/+ and db/db mouse liver tissue.
331 23267038 We observed that G6PT ASO treatment of db/db mice markedly reduced hepatic G6PT mRNA and protein levels and substantially diminished the activation of hepatic 11β-HSD1 and H6PDH.
332 23267038 Reduction of G6pt expression was correlated with the suppression of both hepatic gluconeogenic enzymes G6Pase and PEPCK and corresponded to the improvement of hyperglycemia and insulin resistance in db/db mice.
333 23267038 Addition of G6PT ASO to mouse hepa1-6 cells led to a dose-dependent decrease in 11B-Hsd1 production.
334 23267038 Knockdown of G6PT with RNA interference also impaired 11B-Hsd1 expression and showed comparable effects to H6pdh siRNA on silencing of H6pdh and 11B-Hsd1 expression in these intact cells.
335 23267038 Specific reduction of G6PT may contribute to downregulation of hepatic 11β-HSD1 in diabetic mice.
336 23267038 Pre-receptor activation of glucocorticoids via 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1 (HSD11B1)) has been identified as an important mediator of the metabolic syndrome.
337 23267038 Hexose-6-phosphate dehydrogenase (H6PDH) mediates 11β-HSD1 amplifying tissue glucocorticoid production by driving intracellular NADPH exposure to 11β-HSD1 and requires glucose-6-phosphate transporter (G6PT (SLC37A4)) to maintain its activity.
338 23267038 Here, we evaluated the possible role of G6PT antisense oligonucleotides (G6PT ASO) in the pre-receptor metabolism of glucocorticoids as related to glucose homeostasis and insulin tolerance by examining the production of 11β-HSD1 and H6PDH in both male db/+ and db/db mouse liver tissue.
339 23267038 We observed that G6PT ASO treatment of db/db mice markedly reduced hepatic G6PT mRNA and protein levels and substantially diminished the activation of hepatic 11β-HSD1 and H6PDH.
340 23267038 Reduction of G6pt expression was correlated with the suppression of both hepatic gluconeogenic enzymes G6Pase and PEPCK and corresponded to the improvement of hyperglycemia and insulin resistance in db/db mice.
341 23267038 Addition of G6PT ASO to mouse hepa1-6 cells led to a dose-dependent decrease in 11B-Hsd1 production.
342 23267038 Knockdown of G6PT with RNA interference also impaired 11B-Hsd1 expression and showed comparable effects to H6pdh siRNA on silencing of H6pdh and 11B-Hsd1 expression in these intact cells.
343 23267038 Specific reduction of G6PT may contribute to downregulation of hepatic 11β-HSD1 in diabetic mice.
344 23267038 Pre-receptor activation of glucocorticoids via 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1 (HSD11B1)) has been identified as an important mediator of the metabolic syndrome.
345 23267038 Hexose-6-phosphate dehydrogenase (H6PDH) mediates 11β-HSD1 amplifying tissue glucocorticoid production by driving intracellular NADPH exposure to 11β-HSD1 and requires glucose-6-phosphate transporter (G6PT (SLC37A4)) to maintain its activity.
346 23267038 Here, we evaluated the possible role of G6PT antisense oligonucleotides (G6PT ASO) in the pre-receptor metabolism of glucocorticoids as related to glucose homeostasis and insulin tolerance by examining the production of 11β-HSD1 and H6PDH in both male db/+ and db/db mouse liver tissue.
347 23267038 We observed that G6PT ASO treatment of db/db mice markedly reduced hepatic G6PT mRNA and protein levels and substantially diminished the activation of hepatic 11β-HSD1 and H6PDH.
348 23267038 Reduction of G6pt expression was correlated with the suppression of both hepatic gluconeogenic enzymes G6Pase and PEPCK and corresponded to the improvement of hyperglycemia and insulin resistance in db/db mice.
349 23267038 Addition of G6PT ASO to mouse hepa1-6 cells led to a dose-dependent decrease in 11B-Hsd1 production.
350 23267038 Knockdown of G6PT with RNA interference also impaired 11B-Hsd1 expression and showed comparable effects to H6pdh siRNA on silencing of H6pdh and 11B-Hsd1 expression in these intact cells.
351 23267038 Specific reduction of G6PT may contribute to downregulation of hepatic 11β-HSD1 in diabetic mice.
352 23267038 Pre-receptor activation of glucocorticoids via 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1 (HSD11B1)) has been identified as an important mediator of the metabolic syndrome.
353 23267038 Hexose-6-phosphate dehydrogenase (H6PDH) mediates 11β-HSD1 amplifying tissue glucocorticoid production by driving intracellular NADPH exposure to 11β-HSD1 and requires glucose-6-phosphate transporter (G6PT (SLC37A4)) to maintain its activity.
354 23267038 Here, we evaluated the possible role of G6PT antisense oligonucleotides (G6PT ASO) in the pre-receptor metabolism of glucocorticoids as related to glucose homeostasis and insulin tolerance by examining the production of 11β-HSD1 and H6PDH in both male db/+ and db/db mouse liver tissue.
355 23267038 We observed that G6PT ASO treatment of db/db mice markedly reduced hepatic G6PT mRNA and protein levels and substantially diminished the activation of hepatic 11β-HSD1 and H6PDH.
356 23267038 Reduction of G6pt expression was correlated with the suppression of both hepatic gluconeogenic enzymes G6Pase and PEPCK and corresponded to the improvement of hyperglycemia and insulin resistance in db/db mice.
357 23267038 Addition of G6PT ASO to mouse hepa1-6 cells led to a dose-dependent decrease in 11B-Hsd1 production.
358 23267038 Knockdown of G6PT with RNA interference also impaired 11B-Hsd1 expression and showed comparable effects to H6pdh siRNA on silencing of H6pdh and 11B-Hsd1 expression in these intact cells.
359 23267038 Specific reduction of G6PT may contribute to downregulation of hepatic 11β-HSD1 in diabetic mice.
360 23267038 Pre-receptor activation of glucocorticoids via 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1 (HSD11B1)) has been identified as an important mediator of the metabolic syndrome.
361 23267038 Hexose-6-phosphate dehydrogenase (H6PDH) mediates 11β-HSD1 amplifying tissue glucocorticoid production by driving intracellular NADPH exposure to 11β-HSD1 and requires glucose-6-phosphate transporter (G6PT (SLC37A4)) to maintain its activity.
362 23267038 Here, we evaluated the possible role of G6PT antisense oligonucleotides (G6PT ASO) in the pre-receptor metabolism of glucocorticoids as related to glucose homeostasis and insulin tolerance by examining the production of 11β-HSD1 and H6PDH in both male db/+ and db/db mouse liver tissue.
363 23267038 We observed that G6PT ASO treatment of db/db mice markedly reduced hepatic G6PT mRNA and protein levels and substantially diminished the activation of hepatic 11β-HSD1 and H6PDH.
364 23267038 Reduction of G6pt expression was correlated with the suppression of both hepatic gluconeogenic enzymes G6Pase and PEPCK and corresponded to the improvement of hyperglycemia and insulin resistance in db/db mice.
365 23267038 Addition of G6PT ASO to mouse hepa1-6 cells led to a dose-dependent decrease in 11B-Hsd1 production.
366 23267038 Knockdown of G6PT with RNA interference also impaired 11B-Hsd1 expression and showed comparable effects to H6pdh siRNA on silencing of H6pdh and 11B-Hsd1 expression in these intact cells.
367 23267038 Specific reduction of G6PT may contribute to downregulation of hepatic 11β-HSD1 in diabetic mice.
368 23267038 Pre-receptor activation of glucocorticoids via 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1 (HSD11B1)) has been identified as an important mediator of the metabolic syndrome.
369 23267038 Hexose-6-phosphate dehydrogenase (H6PDH) mediates 11β-HSD1 amplifying tissue glucocorticoid production by driving intracellular NADPH exposure to 11β-HSD1 and requires glucose-6-phosphate transporter (G6PT (SLC37A4)) to maintain its activity.
370 23267038 Here, we evaluated the possible role of G6PT antisense oligonucleotides (G6PT ASO) in the pre-receptor metabolism of glucocorticoids as related to glucose homeostasis and insulin tolerance by examining the production of 11β-HSD1 and H6PDH in both male db/+ and db/db mouse liver tissue.
371 23267038 We observed that G6PT ASO treatment of db/db mice markedly reduced hepatic G6PT mRNA and protein levels and substantially diminished the activation of hepatic 11β-HSD1 and H6PDH.
372 23267038 Reduction of G6pt expression was correlated with the suppression of both hepatic gluconeogenic enzymes G6Pase and PEPCK and corresponded to the improvement of hyperglycemia and insulin resistance in db/db mice.
373 23267038 Addition of G6PT ASO to mouse hepa1-6 cells led to a dose-dependent decrease in 11B-Hsd1 production.
374 23267038 Knockdown of G6PT with RNA interference also impaired 11B-Hsd1 expression and showed comparable effects to H6pdh siRNA on silencing of H6pdh and 11B-Hsd1 expression in these intact cells.
375 23267038 Specific reduction of G6PT may contribute to downregulation of hepatic 11β-HSD1 in diabetic mice.
376 23267038 Pre-receptor activation of glucocorticoids via 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1 (HSD11B1)) has been identified as an important mediator of the metabolic syndrome.
377 23267038 Hexose-6-phosphate dehydrogenase (H6PDH) mediates 11β-HSD1 amplifying tissue glucocorticoid production by driving intracellular NADPH exposure to 11β-HSD1 and requires glucose-6-phosphate transporter (G6PT (SLC37A4)) to maintain its activity.
378 23267038 Here, we evaluated the possible role of G6PT antisense oligonucleotides (G6PT ASO) in the pre-receptor metabolism of glucocorticoids as related to glucose homeostasis and insulin tolerance by examining the production of 11β-HSD1 and H6PDH in both male db/+ and db/db mouse liver tissue.
379 23267038 We observed that G6PT ASO treatment of db/db mice markedly reduced hepatic G6PT mRNA and protein levels and substantially diminished the activation of hepatic 11β-HSD1 and H6PDH.
380 23267038 Reduction of G6pt expression was correlated with the suppression of both hepatic gluconeogenic enzymes G6Pase and PEPCK and corresponded to the improvement of hyperglycemia and insulin resistance in db/db mice.
381 23267038 Addition of G6PT ASO to mouse hepa1-6 cells led to a dose-dependent decrease in 11B-Hsd1 production.
382 23267038 Knockdown of G6PT with RNA interference also impaired 11B-Hsd1 expression and showed comparable effects to H6pdh siRNA on silencing of H6pdh and 11B-Hsd1 expression in these intact cells.
383 23465595 This study examined the role of TLR4 in mediating palmitate effects on the expression of phosphoenolpyruvate carboxykinase (PCK1) and the catalytic subunit of glucose-6-phosphatase (G6PC), rate-determining gluconeogenic enzymes.
384 23465595 Palmitate induced dose-dependent increases in PCK1 and G6PC mRNA abundance, which were prevented by the TLR4 decoy peptide.
385 23465595 Palmitate doubled PCK1 promoter activity, and TLR4 knockdown ablated this response.
386 23465595 Lipopolysaccharide and monophosphoryl lipid A also up-regulated G6PC and PCK1 transcript abundance in a TLR4-dependent manner.
387 23465595 Addition of oleate attenuated palmitate-induced increases in G6PC and PCK1 mRNA abundance.
388 23465595 Palmitate increased nuclear factor κ-light-chain-enhancer of activated B cells reporter gene activity, which was unaffected by TLR4 blockade, but increased mRNA abundance of hepatocyte-specific cyclic AMP response element binding protein, a transcriptional regulator of PCK1, in a TLR4-dependent manner.
389 23465595 Finally, TLR4 activation by palmitate increased subsequent cellular uptake of palmitate, and inhibiting ceramide synthesis ablated palmitate effects on PCK1 mRNA abundance and promoter activity.
390 23465595 This study examined the role of TLR4 in mediating palmitate effects on the expression of phosphoenolpyruvate carboxykinase (PCK1) and the catalytic subunit of glucose-6-phosphatase (G6PC), rate-determining gluconeogenic enzymes.
391 23465595 Palmitate induced dose-dependent increases in PCK1 and G6PC mRNA abundance, which were prevented by the TLR4 decoy peptide.
392 23465595 Palmitate doubled PCK1 promoter activity, and TLR4 knockdown ablated this response.
393 23465595 Lipopolysaccharide and monophosphoryl lipid A also up-regulated G6PC and PCK1 transcript abundance in a TLR4-dependent manner.
394 23465595 Addition of oleate attenuated palmitate-induced increases in G6PC and PCK1 mRNA abundance.
395 23465595 Palmitate increased nuclear factor κ-light-chain-enhancer of activated B cells reporter gene activity, which was unaffected by TLR4 blockade, but increased mRNA abundance of hepatocyte-specific cyclic AMP response element binding protein, a transcriptional regulator of PCK1, in a TLR4-dependent manner.
396 23465595 Finally, TLR4 activation by palmitate increased subsequent cellular uptake of palmitate, and inhibiting ceramide synthesis ablated palmitate effects on PCK1 mRNA abundance and promoter activity.
397 23465595 This study examined the role of TLR4 in mediating palmitate effects on the expression of phosphoenolpyruvate carboxykinase (PCK1) and the catalytic subunit of glucose-6-phosphatase (G6PC), rate-determining gluconeogenic enzymes.
398 23465595 Palmitate induced dose-dependent increases in PCK1 and G6PC mRNA abundance, which were prevented by the TLR4 decoy peptide.
399 23465595 Palmitate doubled PCK1 promoter activity, and TLR4 knockdown ablated this response.
400 23465595 Lipopolysaccharide and monophosphoryl lipid A also up-regulated G6PC and PCK1 transcript abundance in a TLR4-dependent manner.
401 23465595 Addition of oleate attenuated palmitate-induced increases in G6PC and PCK1 mRNA abundance.
402 23465595 Palmitate increased nuclear factor κ-light-chain-enhancer of activated B cells reporter gene activity, which was unaffected by TLR4 blockade, but increased mRNA abundance of hepatocyte-specific cyclic AMP response element binding protein, a transcriptional regulator of PCK1, in a TLR4-dependent manner.
403 23465595 Finally, TLR4 activation by palmitate increased subsequent cellular uptake of palmitate, and inhibiting ceramide synthesis ablated palmitate effects on PCK1 mRNA abundance and promoter activity.
404 23465595 This study examined the role of TLR4 in mediating palmitate effects on the expression of phosphoenolpyruvate carboxykinase (PCK1) and the catalytic subunit of glucose-6-phosphatase (G6PC), rate-determining gluconeogenic enzymes.
405 23465595 Palmitate induced dose-dependent increases in PCK1 and G6PC mRNA abundance, which were prevented by the TLR4 decoy peptide.
406 23465595 Palmitate doubled PCK1 promoter activity, and TLR4 knockdown ablated this response.
407 23465595 Lipopolysaccharide and monophosphoryl lipid A also up-regulated G6PC and PCK1 transcript abundance in a TLR4-dependent manner.
408 23465595 Addition of oleate attenuated palmitate-induced increases in G6PC and PCK1 mRNA abundance.
409 23465595 Palmitate increased nuclear factor κ-light-chain-enhancer of activated B cells reporter gene activity, which was unaffected by TLR4 blockade, but increased mRNA abundance of hepatocyte-specific cyclic AMP response element binding protein, a transcriptional regulator of PCK1, in a TLR4-dependent manner.
410 23465595 Finally, TLR4 activation by palmitate increased subsequent cellular uptake of palmitate, and inhibiting ceramide synthesis ablated palmitate effects on PCK1 mRNA abundance and promoter activity.
411 23743798 Liver glucose-6-phosphatase proteins in suckling and weaned grey seal pups: structural similarities to other mammals and relationship to nutrition, insulin signalling and metabolite levels.
412 23743798 G6Pase comprises a translocase (SLC37A4) and a catalytic subunit (G6PC).
413 23743798 G6PC and SLC37A4 expression and activity are normally regulated by nutritional state and glucostatic hormones, particularly insulin, and are elevated in diabetes.
414 23743798 We tested the hypotheses that (1) grey seal G6PC and SLC37A4 cDNA and predicted protein sequences differ from other species' at functional sites, (2) relative G6Pase protein abundances are lower during feeding than fasting and (3) relative G6Pase protein abundances are related to insulin, insulin receptor phosphorylation and key metabolite levels.
415 23743798 We show that G6PC and partial SLC37A4 cDNA sequences encode proteins sharing 82-95 % identity with other mammals.
416 23743798 Liver glucose-6-phosphatase proteins in suckling and weaned grey seal pups: structural similarities to other mammals and relationship to nutrition, insulin signalling and metabolite levels.
417 23743798 G6Pase comprises a translocase (SLC37A4) and a catalytic subunit (G6PC).
418 23743798 G6PC and SLC37A4 expression and activity are normally regulated by nutritional state and glucostatic hormones, particularly insulin, and are elevated in diabetes.
419 23743798 We tested the hypotheses that (1) grey seal G6PC and SLC37A4 cDNA and predicted protein sequences differ from other species' at functional sites, (2) relative G6Pase protein abundances are lower during feeding than fasting and (3) relative G6Pase protein abundances are related to insulin, insulin receptor phosphorylation and key metabolite levels.
420 23743798 We show that G6PC and partial SLC37A4 cDNA sequences encode proteins sharing 82-95 % identity with other mammals.
421 23743798 Liver glucose-6-phosphatase proteins in suckling and weaned grey seal pups: structural similarities to other mammals and relationship to nutrition, insulin signalling and metabolite levels.
422 23743798 G6Pase comprises a translocase (SLC37A4) and a catalytic subunit (G6PC).
423 23743798 G6PC and SLC37A4 expression and activity are normally regulated by nutritional state and glucostatic hormones, particularly insulin, and are elevated in diabetes.
424 23743798 We tested the hypotheses that (1) grey seal G6PC and SLC37A4 cDNA and predicted protein sequences differ from other species' at functional sites, (2) relative G6Pase protein abundances are lower during feeding than fasting and (3) relative G6Pase protein abundances are related to insulin, insulin receptor phosphorylation and key metabolite levels.
425 23743798 We show that G6PC and partial SLC37A4 cDNA sequences encode proteins sharing 82-95 % identity with other mammals.
426 23743798 Liver glucose-6-phosphatase proteins in suckling and weaned grey seal pups: structural similarities to other mammals and relationship to nutrition, insulin signalling and metabolite levels.
427 23743798 G6Pase comprises a translocase (SLC37A4) and a catalytic subunit (G6PC).
428 23743798 G6PC and SLC37A4 expression and activity are normally regulated by nutritional state and glucostatic hormones, particularly insulin, and are elevated in diabetes.
429 23743798 We tested the hypotheses that (1) grey seal G6PC and SLC37A4 cDNA and predicted protein sequences differ from other species' at functional sites, (2) relative G6Pase protein abundances are lower during feeding than fasting and (3) relative G6Pase protein abundances are related to insulin, insulin receptor phosphorylation and key metabolite levels.
430 23743798 We show that G6PC and partial SLC37A4 cDNA sequences encode proteins sharing 82-95 % identity with other mammals.
431 23835330 IT repressed the liver expression of glucose-6-phosphatase (G6PC) and phosphoenolpyruvate carboxykinase (Pepck), two gluconeogenetic genes, along with the expression of LXRα and its target genes sterol regulatory element-binding protein (Srebp) 1c and fatty acid synthase (Fas) in the liver.
432 23990360 In morbidly obese patients undergoing bariatric surgery, we show that Notch activation positively correlates with glucose-6-phosphatase (G6PC) and phosphoenolpyruvate carboxykinase (PCK1) expression, key regulators of hepatic glucose output.