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Gene Information

Gene symbol: CRTC1

Gene name: CREB regulated transcription coactivator 1

HGNC ID: 16062

Synonyms: KIAA0616, FLJ14027, TORC1

Related Genes

# Gene Symbol Number of hits
1 AGT 1 hits
2 AKT1 1 hits
3 AKT1S1 1 hits
4 ANG 1 hits
5 CRTC2 1 hits
6 DDIT4 1 hits
7 EEF2 1 hits
8 EGF 1 hits
9 EGR1 1 hits
10 EIF4A1 1 hits
11 EIF4A2 1 hits
12 EIF4E 1 hits
13 EIF4EBP1 1 hits
14 EIF4G1 1 hits
15 IGF1 1 hits
16 INS 1 hits
17 INSR 1 hits
18 IQGAP1 1 hits
19 IRS1 1 hits
20 IRS2 1 hits
21 LDLR 1 hits
22 MAPK3 1 hits
23 MAPKAP1 1 hits
24 PARK7 1 hits
25 PCSK9 1 hits
26 PCTP 1 hits
27 PDCD4 1 hits
28 PNPLA2 1 hits
29 PRKAA1 1 hits
30 PRR5 1 hits
31 RORC 1 hits
32 RPS6KB1 1 hits
33 SETD2 1 hits
34 SLC2A4 1 hits
35 SLC38A2 1 hits
36 SLC7A5 1 hits
37 STAT3 1 hits
38 STK11 1 hits
39 TCF7L2 1 hits
40 TFEB 1 hits
41 THEM2 1 hits
42 TSC2 1 hits

Related Sentences

# PMID Sentence
1 17419990 The regulatory circuits that control the activities of the two distinct target of rapamycin (TOR) complexes, TORC1 and TORC2, and of Akt have been a focus of intense research in recent years.
2 18614546 Cytoplasmic and nuclear distribution of the protein complexes mTORC1 and mTORC2: rapamycin triggers dephosphorylation and delocalization of the mTORC2 components rictor and sin1.
3 19074679 Activation of the mammalian target of rapamycin complex 1 (mTORC1) causes the dissociation of eukaryotic initiation factor 4E complex (eIF4E)-binding protein 1 (4E-BP1) from eIF4E, leading to increased eIF4F complex formation. mTORC1 positively regulates protein synthesis and is implicated in several diseases including cardiac hypertrophy, a potentially fatal disorder involving increased cardiomyocyte size.
4 19074679 The importance of 4E-BP1 in mTORC1-regulated protein synthesis was investigated by overexpressing 4E-BP1, which blocks eIF4F formation in isolated primary cardiomyocytes without affecting other targets for mTORC1 signaling.
5 19074679 Interestingly, blocking eIF4F formation did not impair the degree of activation of overall protein synthesis by the hypertrophic agent phenylephrine (PE), which, furthermore, remained dependent on mTORC1.
6 19074679 Overexpressing 4E-BP1 did diminish the PE-stimulated synthesis of luciferase encoded by structured mRNAs, confirming that such mRNAs do require eIF4F for their translation in cardiomyocytes.
7 19074679 These data imply that the substantial inhibition of cardiomyocyte protein synthesis and growth caused by inhibiting mTORC1 cannot be attributed to the activation of 4E-BP1 or loss of eIF4F complexes.
8 19074679 Activation of the mammalian target of rapamycin complex 1 (mTORC1) causes the dissociation of eukaryotic initiation factor 4E complex (eIF4E)-binding protein 1 (4E-BP1) from eIF4E, leading to increased eIF4F complex formation. mTORC1 positively regulates protein synthesis and is implicated in several diseases including cardiac hypertrophy, a potentially fatal disorder involving increased cardiomyocyte size.
9 19074679 The importance of 4E-BP1 in mTORC1-regulated protein synthesis was investigated by overexpressing 4E-BP1, which blocks eIF4F formation in isolated primary cardiomyocytes without affecting other targets for mTORC1 signaling.
10 19074679 Interestingly, blocking eIF4F formation did not impair the degree of activation of overall protein synthesis by the hypertrophic agent phenylephrine (PE), which, furthermore, remained dependent on mTORC1.
11 19074679 Overexpressing 4E-BP1 did diminish the PE-stimulated synthesis of luciferase encoded by structured mRNAs, confirming that such mRNAs do require eIF4F for their translation in cardiomyocytes.
12 19074679 These data imply that the substantial inhibition of cardiomyocyte protein synthesis and growth caused by inhibiting mTORC1 cannot be attributed to the activation of 4E-BP1 or loss of eIF4F complexes.
13 19074679 Activation of the mammalian target of rapamycin complex 1 (mTORC1) causes the dissociation of eukaryotic initiation factor 4E complex (eIF4E)-binding protein 1 (4E-BP1) from eIF4E, leading to increased eIF4F complex formation. mTORC1 positively regulates protein synthesis and is implicated in several diseases including cardiac hypertrophy, a potentially fatal disorder involving increased cardiomyocyte size.
14 19074679 The importance of 4E-BP1 in mTORC1-regulated protein synthesis was investigated by overexpressing 4E-BP1, which blocks eIF4F formation in isolated primary cardiomyocytes without affecting other targets for mTORC1 signaling.
15 19074679 Interestingly, blocking eIF4F formation did not impair the degree of activation of overall protein synthesis by the hypertrophic agent phenylephrine (PE), which, furthermore, remained dependent on mTORC1.
16 19074679 Overexpressing 4E-BP1 did diminish the PE-stimulated synthesis of luciferase encoded by structured mRNAs, confirming that such mRNAs do require eIF4F for their translation in cardiomyocytes.
17 19074679 These data imply that the substantial inhibition of cardiomyocyte protein synthesis and growth caused by inhibiting mTORC1 cannot be attributed to the activation of 4E-BP1 or loss of eIF4F complexes.
18 19074679 Activation of the mammalian target of rapamycin complex 1 (mTORC1) causes the dissociation of eukaryotic initiation factor 4E complex (eIF4E)-binding protein 1 (4E-BP1) from eIF4E, leading to increased eIF4F complex formation. mTORC1 positively regulates protein synthesis and is implicated in several diseases including cardiac hypertrophy, a potentially fatal disorder involving increased cardiomyocyte size.
19 19074679 The importance of 4E-BP1 in mTORC1-regulated protein synthesis was investigated by overexpressing 4E-BP1, which blocks eIF4F formation in isolated primary cardiomyocytes without affecting other targets for mTORC1 signaling.
20 19074679 Interestingly, blocking eIF4F formation did not impair the degree of activation of overall protein synthesis by the hypertrophic agent phenylephrine (PE), which, furthermore, remained dependent on mTORC1.
21 19074679 Overexpressing 4E-BP1 did diminish the PE-stimulated synthesis of luciferase encoded by structured mRNAs, confirming that such mRNAs do require eIF4F for their translation in cardiomyocytes.
22 19074679 These data imply that the substantial inhibition of cardiomyocyte protein synthesis and growth caused by inhibiting mTORC1 cannot be attributed to the activation of 4E-BP1 or loss of eIF4F complexes.
23 19100909 TOR is found in 2 structurally and functionally distinct multiprotein complexes, TORC1 and TORC2.
24 19100909 TORC1 in yeast and mammals mediates temporal control of cell growth by regulating several cellular processes, including translation, transcription, ribosome biogenesis, nutrient transport, and autophagy. mTORC2 is rapamycin insensitive and contains mTOR, rictor, mSIN1, PRR5, and mLST8.
25 19100909 TOR is found in 2 structurally and functionally distinct multiprotein complexes, TORC1 and TORC2.
26 19100909 TORC1 in yeast and mammals mediates temporal control of cell growth by regulating several cellular processes, including translation, transcription, ribosome biogenesis, nutrient transport, and autophagy. mTORC2 is rapamycin insensitive and contains mTOR, rictor, mSIN1, PRR5, and mLST8.
27 19200882 Analogous to the situation in yeast, mTOR forms two distinct functional complexes termed mTOR complex 1 and 2 (mTORC1 and mTORC2). mTORC1 activity is inhibited by rapamycin, a specific inhibitor of mTOR, whereas mTORC2 activity is resistant to short-term treatments with rapamycin.
28 19260765 Rictor/TORC2 regulates Caenorhabditis elegans fat storage, body size, and development through sgk-1.
29 19260765 The TOR kinase is found in two biochemically and functionally distinct complexes, termed TORC1 and TORC2.
30 19260765 Among potential targets of TORC2, the pro-survival kinase AKT has garnered much attention.
31 19260765 Within the context of intact animals, however, the physiological consequences of phosphorylation of AKT by TORC2 remain poorly understood.
32 19260765 These functions of CeRictor are not mediated through the regulation of AKT kinases or their major downstream target, the insulin-regulated FOXO transcription factor DAF-16.
33 19260765 These findings identify new physiological roles for TORC2, mediated by SGK, in regulation of C. elegans lipid accumulation and growth, and they challenge the notion that AKT is the primary effector of TORC2 function.
34 19297425 Elevated corticosterone associated with food deprivation upregulates expression in rat skeletal muscle of the mTORC1 repressor, REDD1.
35 19297425 Previous studies have identified upregulated expression of the protein Regulated in DNA Damage and Development (REDD1) as an important mechanism in the regulation of mTORC1 activity in response to a variety of stresses.
36 19297425 Our goal in this investigation was to determine whether modulation of REDD1 expression occurs in response to food deprivation and refeeding, and, if it does, to ascertain if changes in REDD1 expression correlate with altered mTORC1 signaling.
37 19297425 Although diabetic rats exhibited upregulated REDD1 expression compared with nondiabetic controls, there was no direct correlation between REDD1 mRNA expression and serum insulin levels, and insulin treatment of diabetic rats did not affect REDD1 expression.
38 19297425 Moreover, inhibiting corticosterone-mediated signaling via administration of the glucocorticoid receptor antagonist RU486 blocked both the food deprivation- and diabetes-induced increase in REDD1 mRNA expression.
39 19297425 Overall, the results demonstrate that changes in REDD1 expression likely contribute to the regulation of mTORC1 signaling during food deprivation and refeeding.
40 19297425 Elevated corticosterone associated with food deprivation upregulates expression in rat skeletal muscle of the mTORC1 repressor, REDD1.
41 19297425 Previous studies have identified upregulated expression of the protein Regulated in DNA Damage and Development (REDD1) as an important mechanism in the regulation of mTORC1 activity in response to a variety of stresses.
42 19297425 Our goal in this investigation was to determine whether modulation of REDD1 expression occurs in response to food deprivation and refeeding, and, if it does, to ascertain if changes in REDD1 expression correlate with altered mTORC1 signaling.
43 19297425 Although diabetic rats exhibited upregulated REDD1 expression compared with nondiabetic controls, there was no direct correlation between REDD1 mRNA expression and serum insulin levels, and insulin treatment of diabetic rats did not affect REDD1 expression.
44 19297425 Moreover, inhibiting corticosterone-mediated signaling via administration of the glucocorticoid receptor antagonist RU486 blocked both the food deprivation- and diabetes-induced increase in REDD1 mRNA expression.
45 19297425 Overall, the results demonstrate that changes in REDD1 expression likely contribute to the regulation of mTORC1 signaling during food deprivation and refeeding.
46 19297425 Elevated corticosterone associated with food deprivation upregulates expression in rat skeletal muscle of the mTORC1 repressor, REDD1.
47 19297425 Previous studies have identified upregulated expression of the protein Regulated in DNA Damage and Development (REDD1) as an important mechanism in the regulation of mTORC1 activity in response to a variety of stresses.
48 19297425 Our goal in this investigation was to determine whether modulation of REDD1 expression occurs in response to food deprivation and refeeding, and, if it does, to ascertain if changes in REDD1 expression correlate with altered mTORC1 signaling.
49 19297425 Although diabetic rats exhibited upregulated REDD1 expression compared with nondiabetic controls, there was no direct correlation between REDD1 mRNA expression and serum insulin levels, and insulin treatment of diabetic rats did not affect REDD1 expression.
50 19297425 Moreover, inhibiting corticosterone-mediated signaling via administration of the glucocorticoid receptor antagonist RU486 blocked both the food deprivation- and diabetes-induced increase in REDD1 mRNA expression.
51 19297425 Overall, the results demonstrate that changes in REDD1 expression likely contribute to the regulation of mTORC1 signaling during food deprivation and refeeding.
52 19297425 Elevated corticosterone associated with food deprivation upregulates expression in rat skeletal muscle of the mTORC1 repressor, REDD1.
53 19297425 Previous studies have identified upregulated expression of the protein Regulated in DNA Damage and Development (REDD1) as an important mechanism in the regulation of mTORC1 activity in response to a variety of stresses.
54 19297425 Our goal in this investigation was to determine whether modulation of REDD1 expression occurs in response to food deprivation and refeeding, and, if it does, to ascertain if changes in REDD1 expression correlate with altered mTORC1 signaling.
55 19297425 Although diabetic rats exhibited upregulated REDD1 expression compared with nondiabetic controls, there was no direct correlation between REDD1 mRNA expression and serum insulin levels, and insulin treatment of diabetic rats did not affect REDD1 expression.
56 19297425 Moreover, inhibiting corticosterone-mediated signaling via administration of the glucocorticoid receptor antagonist RU486 blocked both the food deprivation- and diabetes-induced increase in REDD1 mRNA expression.
57 19297425 Overall, the results demonstrate that changes in REDD1 expression likely contribute to the regulation of mTORC1 signaling during food deprivation and refeeding.
58 19996311 Insulin induces REDD1 expression through hypoxia-inducible factor 1 activation in adipocytes.
59 19996311 REDD1 (regulated in development and DNA damage responses) is essential for the inhibition of mTORC1 (mammalian target of rapamycin complex) signaling pathway in response to hypoxia.
60 19996311 However, the regulation of REDD1 expression in response to insulin remains unknown.
61 19996311 In the present study, we demonstrate that in murine and in human adipocytes, insulin stimulates REDD1 expression.
62 19996311 Insulin-induced REDD1 expression occurs through phosphoinositide 3-kinase/mTOR-dependent pathways.
63 19996311 Moreover, using echinomycin, a hypoxia-inducible factor 1 (HIF-1) inhibitor, and HIF-1alpha small interfering RNA, we demonstrate that insulin stimulates REDD1 expression only through the transcription factor HIF-1.
64 19996311 In conclusion, our study shows that insulin stimulates REDD1 expression in adipocytes.
65 20138985 Phosphorylation of PRAS40 on Thr246 by PKB/AKT facilitates efficient phosphorylation of Ser183 by mTORC1.
66 20138985 The proline-rich Akt substrate of 40-kDa (PRAS40) is a component of mTORC1, which has a regulatory function at the intersection of the PKB/Akt and mTORC1 signalling pathway.
67 20138985 Phosphorylation of PRAS40-Thr246 by PKB/Akt, and PRAS40-Ser183 and PRAS40-Ser221 by mTORC1 results in dissociation from mTORC1, and its binding to 14-3-3 proteins.
68 20138985 Insulin promoted PRAS40-Ser183 phosphorylation after a euglycaemic-hyperinsulinaemic clamp in human skeletal muscle.
69 20138985 The insulin-induced PRAS40-Ser183 phosphorylation was further evidenced in vivo in rat skeletal and cardiac muscle, and in vitro in A14 fibroblasts, 3T3L1 adipocytes and L6 myotubes.
70 20138985 Inhibition of mTORC1 by rapamycin or amino acid deprivation partially abrogated insulin-mediated PRAS40-Ser183 phosphorylation in cultured cell lines.
71 20138985 However, lowering insulin-induced PRAS40-Thr246 phosphorylation using wortmannin or palmitate in cell lines, or by feeding rats a high-fat diet, completely abolished insulin-mediated PRAS40-Ser183 phosphorylation.
72 20138985 In addition, replacement of Thr246 by Ala reduced insulin-mediated PRAS40-Ser183 phosphorylation.
73 20138985 We conclude that PRAS40-Ser183 is a component of insulin action, and that efficient phosphorylation of PRAS40-Ser183 by mTORC1 requires the phosphorylation of PRAS40-Thr246 by PKB/Akt.
74 20138985 Phosphorylation of PRAS40 on Thr246 by PKB/AKT facilitates efficient phosphorylation of Ser183 by mTORC1.
75 20138985 The proline-rich Akt substrate of 40-kDa (PRAS40) is a component of mTORC1, which has a regulatory function at the intersection of the PKB/Akt and mTORC1 signalling pathway.
76 20138985 Phosphorylation of PRAS40-Thr246 by PKB/Akt, and PRAS40-Ser183 and PRAS40-Ser221 by mTORC1 results in dissociation from mTORC1, and its binding to 14-3-3 proteins.
77 20138985 Insulin promoted PRAS40-Ser183 phosphorylation after a euglycaemic-hyperinsulinaemic clamp in human skeletal muscle.
78 20138985 The insulin-induced PRAS40-Ser183 phosphorylation was further evidenced in vivo in rat skeletal and cardiac muscle, and in vitro in A14 fibroblasts, 3T3L1 adipocytes and L6 myotubes.
79 20138985 Inhibition of mTORC1 by rapamycin or amino acid deprivation partially abrogated insulin-mediated PRAS40-Ser183 phosphorylation in cultured cell lines.
80 20138985 However, lowering insulin-induced PRAS40-Thr246 phosphorylation using wortmannin or palmitate in cell lines, or by feeding rats a high-fat diet, completely abolished insulin-mediated PRAS40-Ser183 phosphorylation.
81 20138985 In addition, replacement of Thr246 by Ala reduced insulin-mediated PRAS40-Ser183 phosphorylation.
82 20138985 We conclude that PRAS40-Ser183 is a component of insulin action, and that efficient phosphorylation of PRAS40-Ser183 by mTORC1 requires the phosphorylation of PRAS40-Thr246 by PKB/Akt.
83 20138985 Phosphorylation of PRAS40 on Thr246 by PKB/AKT facilitates efficient phosphorylation of Ser183 by mTORC1.
84 20138985 The proline-rich Akt substrate of 40-kDa (PRAS40) is a component of mTORC1, which has a regulatory function at the intersection of the PKB/Akt and mTORC1 signalling pathway.
85 20138985 Phosphorylation of PRAS40-Thr246 by PKB/Akt, and PRAS40-Ser183 and PRAS40-Ser221 by mTORC1 results in dissociation from mTORC1, and its binding to 14-3-3 proteins.
86 20138985 Insulin promoted PRAS40-Ser183 phosphorylation after a euglycaemic-hyperinsulinaemic clamp in human skeletal muscle.
87 20138985 The insulin-induced PRAS40-Ser183 phosphorylation was further evidenced in vivo in rat skeletal and cardiac muscle, and in vitro in A14 fibroblasts, 3T3L1 adipocytes and L6 myotubes.
88 20138985 Inhibition of mTORC1 by rapamycin or amino acid deprivation partially abrogated insulin-mediated PRAS40-Ser183 phosphorylation in cultured cell lines.
89 20138985 However, lowering insulin-induced PRAS40-Thr246 phosphorylation using wortmannin or palmitate in cell lines, or by feeding rats a high-fat diet, completely abolished insulin-mediated PRAS40-Ser183 phosphorylation.
90 20138985 In addition, replacement of Thr246 by Ala reduced insulin-mediated PRAS40-Ser183 phosphorylation.
91 20138985 We conclude that PRAS40-Ser183 is a component of insulin action, and that efficient phosphorylation of PRAS40-Ser183 by mTORC1 requires the phosphorylation of PRAS40-Thr246 by PKB/Akt.
92 20491627 Current knowledge indicates that mTOR functions as two distinct multiprotein complexes, mTORC1 and mTORC2. mTORC1 phosphorylates p70 S6 kinase (S6K1) and eukaryotic initiation factor 4E (eIF4E) binding protein 1 (4E-BP1), and regulates cell growth, proliferation, and survival by integrating hormones, growth factors, nutrients, stressors and energy signals.
93 20585550 Akt represents a nodal point between the Insulin receptor and TOR signaling, and its activation by phosphorylation controls cell proliferation, cell size, and metabolism.
94 20585550 This feedback inhibition is switched from TORC1 to S6K only in the context of enhanced TORC1 activity, as triggered by mutations in tsc2.
95 20817607 SREBP-1c can be induced by mTORC1, bifurcating lipogenesis from AKT-activated gluconeogenesis.
96 21157483 Mammalian TOR complex 1 (mTORC1) and mTORC2 exert their actions by regulating other important kinases, such as S6 kinase (S6K) and Akt.
97 21426932 High glucose upregulation of early-onset Parkinson's disease protein DJ-1 integrates the PRAS40/TORC1 axis to mesangial cell hypertrophy.
98 21426932 We identified DJ-1 to increase in response to high glucose in renal glomerular mesangial cells concomitant with an increase in phosphorylation of Akt in a time-dependent manner.
99 21426932 Plasmid-derived overexpression as well as downregulation of DJ-1 by siRNA showed the requirement of this protein in high glucose-stimulated Akt phosphorylation.
100 21426932 The tumor suppressor protein PTEN acts as a negative regulator of Akt activation.
101 21426932 Interestingly, DJ-1 was associated with PTEN and this interaction was significantly increased in response to high glucose.
102 21426932 High glucose-induced increase in DJ-1 promoted phosphorylation of the PRAS40, a negative regulator of TORC1 kinase activity, resulting in activating and inactivating phosphorylation of S6 kinase and 4EBP-1, respectively.
103 21426932 Our results provide evidence for a unique mechanism whereby DJ-1 induces Akt/PRAS40/TORC1-mediated hypertrophy in response to high glucose.
104 21479224 Evidence suggests that the insulin pathway bifurcates downstream of Akt to regulate these two processes.
105 21479224 Here, we generated mice with hepatocyte-specific deletion of Tsc1 to study the effects of constitutive mTORC1 activation in the liver.
106 21479224 Instead, Akt and mTORC1 have opposing effects on hepatic lipid accumulation such that mTORC1 protects against diet-induced steatosis.
107 21606591 Genetic deletion of mTOR complex 1 (mTORC1) in mouse podocytes induced proteinuria and progressive glomerulosclerosis.
108 21606591 Furthermore, simultaneous deletion of both mTORC1 and mTORC2 from mouse podocytes aggravated the glomerular lesions, revealing the importance of both mTOR complexes for podocyte homeostasis.
109 21606591 Genetic deletion of mTOR complex 1 (mTORC1) in mouse podocytes induced proteinuria and progressive glomerulosclerosis.
110 21606591 Furthermore, simultaneous deletion of both mTORC1 and mTORC2 from mouse podocytes aggravated the glomerular lesions, revealing the importance of both mTOR complexes for podocyte homeostasis.
111 21606676 One important strategy for stimulating protein synthesis involves the ser/thr kinase Akt, which subsequently triggers inactivation of the cap-dependent translational repressor 4E-BP1 by an mTOR-containing protein complex (mTORC1).
112 21606676 Importantly, preventing the virus Akt-imposter from triggering mTORC1 inhibited viral growth, suggesting a new way to block herpes simplex virus.
113 21606676 One important strategy for stimulating protein synthesis involves the ser/thr kinase Akt, which subsequently triggers inactivation of the cap-dependent translational repressor 4E-BP1 by an mTOR-containing protein complex (mTORC1).
114 21606676 Importantly, preventing the virus Akt-imposter from triggering mTORC1 inhibited viral growth, suggesting a new way to block herpes simplex virus.
115 21813874 In conditions of overnutrition, cardiac cells must cope with a multitude of extracellular signals generated by changes in nutrient load (glucose, amino acids, and lipids) and the hormonal milieu [increased insulin (INS), ANG II, and adverse cytokine/adipokine profile].
116 21813874 One adaptive mechanism present in the INS-resistant ZO, but absent in the diabetic ZDF heart, involves an interaction between the nutrient sensor kinase mammalian target of rapamycin complex 1 (mTORC1) and ANG II-type 2 receptor (AT2R).
117 21876130 Consequently, this kinase is implicated in metabolic diseases including cancer and diabetes, so there is great interest in understanding the complete spectrum of mTOR-regulated networks. mTOR exists in two functionally distinct complexes, mTORC1 and mTORC2, and whereas the natural product rapamycin inhibits only a subset of mTORC1 functions, recently developed ATP-competitive mTOR inhibitors have revealed new roles for both complexes.
118 22158625 High glucose stimulated mTORC1 to promote key events in the initiation and elongation phases of mRNA translation: binding of eIF4A to eIF4G, reduction in PDCD4 expression and inhibition of its binding to eIF4A, eEF2 kinase phosphorylation, and dephosphorylation of eEF2; these events were inhibited by NaHS.
119 22158625 NaHS induction of AMPK phosphorylation was inhibited by siRNA for calmodulin kinase kinase β, but not LKB1, upstream kinases for AMPK; STO-609, a calmodulin kinase kinase β inhibitor, had the same effect.
120 22266904 TOR complex 2 (TORC2) in Dictyostelium suppresses phagocytic nutrient capture independently of TORC1-mediated nutrient sensing.
121 22266904 The TOR protein kinase functions in two distinct complexes, TOR complex 1 (TORC1) and 2 (TORC2).
122 22266904 TORC1 is required for growth in response to growth factors, nutrients and the cellular energy state; TORC2 regulates AKT signaling, which can modulate cytoskeletal polarization.
123 22266904 However, loss of Dictyostelium TORC2 components Rictor/Pia, SIN1/RIP3 and Lst8 promotes nutrient particle uptake; inactivation of TORC2 leads to increased efficiency and speed of phagocytosis.
124 22266904 In contrast to phagocytosis, we show that macropinocytosis, an AKT-dependent process for cellular uptake of fluid phase nutrients, is not regulated by either of the TOR complexes.
125 22266904 The integrated and balanced regulation of TORC1 and TORC2 might be crucial in Dictyostelium to coordinate growth and energy needs with other essential TOR-regulated processes.
126 22266904 TOR complex 2 (TORC2) in Dictyostelium suppresses phagocytic nutrient capture independently of TORC1-mediated nutrient sensing.
127 22266904 The TOR protein kinase functions in two distinct complexes, TOR complex 1 (TORC1) and 2 (TORC2).
128 22266904 TORC1 is required for growth in response to growth factors, nutrients and the cellular energy state; TORC2 regulates AKT signaling, which can modulate cytoskeletal polarization.
129 22266904 However, loss of Dictyostelium TORC2 components Rictor/Pia, SIN1/RIP3 and Lst8 promotes nutrient particle uptake; inactivation of TORC2 leads to increased efficiency and speed of phagocytosis.
130 22266904 In contrast to phagocytosis, we show that macropinocytosis, an AKT-dependent process for cellular uptake of fluid phase nutrients, is not regulated by either of the TOR complexes.
131 22266904 The integrated and balanced regulation of TORC1 and TORC2 might be crucial in Dictyostelium to coordinate growth and energy needs with other essential TOR-regulated processes.
132 22266904 TOR complex 2 (TORC2) in Dictyostelium suppresses phagocytic nutrient capture independently of TORC1-mediated nutrient sensing.
133 22266904 The TOR protein kinase functions in two distinct complexes, TOR complex 1 (TORC1) and 2 (TORC2).
134 22266904 TORC1 is required for growth in response to growth factors, nutrients and the cellular energy state; TORC2 regulates AKT signaling, which can modulate cytoskeletal polarization.
135 22266904 However, loss of Dictyostelium TORC2 components Rictor/Pia, SIN1/RIP3 and Lst8 promotes nutrient particle uptake; inactivation of TORC2 leads to increased efficiency and speed of phagocytosis.
136 22266904 In contrast to phagocytosis, we show that macropinocytosis, an AKT-dependent process for cellular uptake of fluid phase nutrients, is not regulated by either of the TOR complexes.
137 22266904 The integrated and balanced regulation of TORC1 and TORC2 might be crucial in Dictyostelium to coordinate growth and energy needs with other essential TOR-regulated processes.
138 22266904 TOR complex 2 (TORC2) in Dictyostelium suppresses phagocytic nutrient capture independently of TORC1-mediated nutrient sensing.
139 22266904 The TOR protein kinase functions in two distinct complexes, TOR complex 1 (TORC1) and 2 (TORC2).
140 22266904 TORC1 is required for growth in response to growth factors, nutrients and the cellular energy state; TORC2 regulates AKT signaling, which can modulate cytoskeletal polarization.
141 22266904 However, loss of Dictyostelium TORC2 components Rictor/Pia, SIN1/RIP3 and Lst8 promotes nutrient particle uptake; inactivation of TORC2 leads to increased efficiency and speed of phagocytosis.
142 22266904 In contrast to phagocytosis, we show that macropinocytosis, an AKT-dependent process for cellular uptake of fluid phase nutrients, is not regulated by either of the TOR complexes.
143 22266904 The integrated and balanced regulation of TORC1 and TORC2 might be crucial in Dictyostelium to coordinate growth and energy needs with other essential TOR-regulated processes.
144 22328503 IQGAP1, a widely conserved effector and/or regulator of the GTPase CDC42, is a putative oncoprotein that controls cell proliferation; however, its mechanism in tumorigenesis is unknown.
145 22328503 Mammalian IQGAP1 binds mTORC1 and Akt1 and in response to epidermal growth factor (EGF), cells expressing the mTORC1-Akt1-binding region (IQGAP1(IR-WW)) contained attenuated phosphorylated ERK1/2 (ERK1/2-P) activity and inactive glycogen synthase kinase 3α/β (GSK3α/β), which control apoptosis.
146 22328503 Interestingly, these cells displayed a high level of Akt1 S473-P, but an attenuated level of the mTORC1-dependent kinase S6K1 T389-P and induced mTORC1-Akt1- and EGF-dependent transformed phenotypes.
147 22354785 Role of PRAS40 in Akt and mTOR signaling in health and disease.
148 22354785 The proline-rich Akt substrate of 40 kDa (PRAS40) acts at the intersection of the Akt- and mammalian target of rapamycin (mTOR)-mediated signaling pathways.
149 22354785 The protein kinase mTOR is the catalytic subunit of two distinct signaling complexes, mTOR complex 1 (mTORC1) and mTORC2, that link energy and nutrients to the regulation of cellular growth and energy metabolism.
150 22354785 Activation of mTOR in response to nutrients and growth factors results in the phosphorylation of numerous substrates, including the phosphorylations of S6 kinase by mTORC1 and Akt by mTORC2.
151 22354785 Although PRAS40 was first reported as substrate for Akt, investigations toward mTOR-binding partners subsequently identified PRAS40 as both component and substrate of mTORC1.
152 22354785 Phosphorylation of PRAS40 by Akt and by mTORC1 itself results in dissociation of PRAS40 from mTORC1 and may relieve an inhibitory constraint on mTORC1 activity.
153 22354785 Role of PRAS40 in Akt and mTOR signaling in health and disease.
154 22354785 The proline-rich Akt substrate of 40 kDa (PRAS40) acts at the intersection of the Akt- and mammalian target of rapamycin (mTOR)-mediated signaling pathways.
155 22354785 The protein kinase mTOR is the catalytic subunit of two distinct signaling complexes, mTOR complex 1 (mTORC1) and mTORC2, that link energy and nutrients to the regulation of cellular growth and energy metabolism.
156 22354785 Activation of mTOR in response to nutrients and growth factors results in the phosphorylation of numerous substrates, including the phosphorylations of S6 kinase by mTORC1 and Akt by mTORC2.
157 22354785 Although PRAS40 was first reported as substrate for Akt, investigations toward mTOR-binding partners subsequently identified PRAS40 as both component and substrate of mTORC1.
158 22354785 Phosphorylation of PRAS40 by Akt and by mTORC1 itself results in dissociation of PRAS40 from mTORC1 and may relieve an inhibitory constraint on mTORC1 activity.
159 22354785 Role of PRAS40 in Akt and mTOR signaling in health and disease.
160 22354785 The proline-rich Akt substrate of 40 kDa (PRAS40) acts at the intersection of the Akt- and mammalian target of rapamycin (mTOR)-mediated signaling pathways.
161 22354785 The protein kinase mTOR is the catalytic subunit of two distinct signaling complexes, mTOR complex 1 (mTORC1) and mTORC2, that link energy and nutrients to the regulation of cellular growth and energy metabolism.
162 22354785 Activation of mTOR in response to nutrients and growth factors results in the phosphorylation of numerous substrates, including the phosphorylations of S6 kinase by mTORC1 and Akt by mTORC2.
163 22354785 Although PRAS40 was first reported as substrate for Akt, investigations toward mTOR-binding partners subsequently identified PRAS40 as both component and substrate of mTORC1.
164 22354785 Phosphorylation of PRAS40 by Akt and by mTORC1 itself results in dissociation of PRAS40 from mTORC1 and may relieve an inhibitory constraint on mTORC1 activity.
165 22426206 Regulation of hepatic LDL receptors by mTORC1 and PCSK9 in mice.
166 22426206 Recent studies have also suggested that hepatic insulin signaling sustains LDLR levels.
167 22426206 We therefore sought to elucidate the mechanisms linking hepatic insulin signaling to regulation of LDLR levels.
168 22426206 In WT mice, insulin receptor knockdown by shRNA resulted in decreased hepatic mTORC1 signaling and LDLR protein levels.
169 22426206 It also led to increased expression of PCSK9, a known post-transcriptional regulator of LDLR expression.
170 22426206 Administration of the mTORC1 inhibitor rapamycin caused increased expression of PCSK9, decreased levels of hepatic LDLR protein, and increased levels of VLDL/LDL cholesterol in WT but not Pcsk9-/- mice.
171 22426206 Conversely, mice with increased hepatic mTORC1 activity exhibited decreased expression of PCSK9 and increased levels of hepatic LDLR protein levels.
172 22426206 Pcsk9 is regulated by the transcription factor HNF1α, and our further detailed analyses suggest that increased mTORC1 activity leads to activation of PKCδ, reduced activity of HNF4α and HNF1α, decreased PCSK9 expression, and ultimately increased hepatic LDLR protein levels, which result in decreased circulating LDL levels.
173 22426206 Regulation of hepatic LDL receptors by mTORC1 and PCSK9 in mice.
174 22426206 Recent studies have also suggested that hepatic insulin signaling sustains LDLR levels.
175 22426206 We therefore sought to elucidate the mechanisms linking hepatic insulin signaling to regulation of LDLR levels.
176 22426206 In WT mice, insulin receptor knockdown by shRNA resulted in decreased hepatic mTORC1 signaling and LDLR protein levels.
177 22426206 It also led to increased expression of PCSK9, a known post-transcriptional regulator of LDLR expression.
178 22426206 Administration of the mTORC1 inhibitor rapamycin caused increased expression of PCSK9, decreased levels of hepatic LDLR protein, and increased levels of VLDL/LDL cholesterol in WT but not Pcsk9-/- mice.
179 22426206 Conversely, mice with increased hepatic mTORC1 activity exhibited decreased expression of PCSK9 and increased levels of hepatic LDLR protein levels.
180 22426206 Pcsk9 is regulated by the transcription factor HNF1α, and our further detailed analyses suggest that increased mTORC1 activity leads to activation of PKCδ, reduced activity of HNF4α and HNF1α, decreased PCSK9 expression, and ultimately increased hepatic LDLR protein levels, which result in decreased circulating LDL levels.
181 22426206 Regulation of hepatic LDL receptors by mTORC1 and PCSK9 in mice.
182 22426206 Recent studies have also suggested that hepatic insulin signaling sustains LDLR levels.
183 22426206 We therefore sought to elucidate the mechanisms linking hepatic insulin signaling to regulation of LDLR levels.
184 22426206 In WT mice, insulin receptor knockdown by shRNA resulted in decreased hepatic mTORC1 signaling and LDLR protein levels.
185 22426206 It also led to increased expression of PCSK9, a known post-transcriptional regulator of LDLR expression.
186 22426206 Administration of the mTORC1 inhibitor rapamycin caused increased expression of PCSK9, decreased levels of hepatic LDLR protein, and increased levels of VLDL/LDL cholesterol in WT but not Pcsk9-/- mice.
187 22426206 Conversely, mice with increased hepatic mTORC1 activity exhibited decreased expression of PCSK9 and increased levels of hepatic LDLR protein levels.
188 22426206 Pcsk9 is regulated by the transcription factor HNF1α, and our further detailed analyses suggest that increased mTORC1 activity leads to activation of PKCδ, reduced activity of HNF4α and HNF1α, decreased PCSK9 expression, and ultimately increased hepatic LDLR protein levels, which result in decreased circulating LDL levels.
189 22426206 Regulation of hepatic LDL receptors by mTORC1 and PCSK9 in mice.
190 22426206 Recent studies have also suggested that hepatic insulin signaling sustains LDLR levels.
191 22426206 We therefore sought to elucidate the mechanisms linking hepatic insulin signaling to regulation of LDLR levels.
192 22426206 In WT mice, insulin receptor knockdown by shRNA resulted in decreased hepatic mTORC1 signaling and LDLR protein levels.
193 22426206 It also led to increased expression of PCSK9, a known post-transcriptional regulator of LDLR expression.
194 22426206 Administration of the mTORC1 inhibitor rapamycin caused increased expression of PCSK9, decreased levels of hepatic LDLR protein, and increased levels of VLDL/LDL cholesterol in WT but not Pcsk9-/- mice.
195 22426206 Conversely, mice with increased hepatic mTORC1 activity exhibited decreased expression of PCSK9 and increased levels of hepatic LDLR protein levels.
196 22426206 Pcsk9 is regulated by the transcription factor HNF1α, and our further detailed analyses suggest that increased mTORC1 activity leads to activation of PKCδ, reduced activity of HNF4α and HNF1α, decreased PCSK9 expression, and ultimately increased hepatic LDLR protein levels, which result in decreased circulating LDL levels.
197 22426206 Regulation of hepatic LDL receptors by mTORC1 and PCSK9 in mice.
198 22426206 Recent studies have also suggested that hepatic insulin signaling sustains LDLR levels.
199 22426206 We therefore sought to elucidate the mechanisms linking hepatic insulin signaling to regulation of LDLR levels.
200 22426206 In WT mice, insulin receptor knockdown by shRNA resulted in decreased hepatic mTORC1 signaling and LDLR protein levels.
201 22426206 It also led to increased expression of PCSK9, a known post-transcriptional regulator of LDLR expression.
202 22426206 Administration of the mTORC1 inhibitor rapamycin caused increased expression of PCSK9, decreased levels of hepatic LDLR protein, and increased levels of VLDL/LDL cholesterol in WT but not Pcsk9-/- mice.
203 22426206 Conversely, mice with increased hepatic mTORC1 activity exhibited decreased expression of PCSK9 and increased levels of hepatic LDLR protein levels.
204 22426206 Pcsk9 is regulated by the transcription factor HNF1α, and our further detailed analyses suggest that increased mTORC1 activity leads to activation of PKCδ, reduced activity of HNF4α and HNF1α, decreased PCSK9 expression, and ultimately increased hepatic LDLR protein levels, which result in decreased circulating LDL levels.
205 22442749 Dairy proteins and meat stimulate insulin/insulin-like growth factor 1 signaling and provide high amounts of leucine, a primary and independent stimulator for mTORC1 activation.
206 22442749 The downstream target of mTORC1, the kinase S6K1, induces insulin resistance by phosphorylation of insulin receptor substrate-1, thereby increasing the metabolic burden of β-cells.
207 22442749 Disturbances of β-cell mass regulation with increased β-cell proliferation and apoptosis as well as insulin resistance are hallmarks of T2D, which are all associated with hyperactivation of mTORC1.
208 22442749 Dairy proteins and meat stimulate insulin/insulin-like growth factor 1 signaling and provide high amounts of leucine, a primary and independent stimulator for mTORC1 activation.
209 22442749 The downstream target of mTORC1, the kinase S6K1, induces insulin resistance by phosphorylation of insulin receptor substrate-1, thereby increasing the metabolic burden of β-cells.
210 22442749 Disturbances of β-cell mass regulation with increased β-cell proliferation and apoptosis as well as insulin resistance are hallmarks of T2D, which are all associated with hyperactivation of mTORC1.
211 22442749 Dairy proteins and meat stimulate insulin/insulin-like growth factor 1 signaling and provide high amounts of leucine, a primary and independent stimulator for mTORC1 activation.
212 22442749 The downstream target of mTORC1, the kinase S6K1, induces insulin resistance by phosphorylation of insulin receptor substrate-1, thereby increasing the metabolic burden of β-cells.
213 22442749 Disturbances of β-cell mass regulation with increased β-cell proliferation and apoptosis as well as insulin resistance are hallmarks of T2D, which are all associated with hyperactivation of mTORC1.
214 22457328 By assembling with unique and shared partner proteins, mTOR forms the catalytic core of at least two complexes, mTOR complex 1 (mTORC1) and mTORC2, that show differential sensitivity to the allosteric mTOR inhibitor rapamycin and that phosphorylate distinct substrates to modulate cell growth, proliferation, survival, and metabolism in response to diverse environmental cues.
215 22496407 Inhibition of mTOR, using either rapamycin (which inhibits predominantly mTORC1) or "catalytic" inhibitors (which effectively inhibit both mTORC1 and mTORC2), provide exciting possibilities for novel forms of treatment of DN and PKD.
216 22851690 The combined deletion of S6K1 and Akt2 deteriorates glycemic control in a high-fat diet.
217 22851690 Signaling downstream of mechanistic target of rapamycin complexes 1 and 2 (mTORC1 and mTORC2) controls specific and distinct aspects of insulin action and nutrient homeostasis in an interconnected and as yet unclear way.
218 22973301 Rapamycin has a biphasic effect on insulin sensitivity in C2C12 myotubes due to sequential disruption of mTORC1 and mTORC2.
219 22973301 Rapamycin, an inhibitor of mTOR complex 1 (mTORC1), improves insulin sensitivity in acute studies in vitro and in vivo by disrupting a negative feedback loop mediated by S6 kinase.
220 22973301 We and others have recently observed that chronic rapamycin treatment induces insulin resistance in rodents, at least in part due to disruption of mTORC2, an mTOR-containing complex that is not acutely sensitive to the drug.
221 22973301 Instead, we found dramatic disruption of mTORC2, which coincided with the onset of insulin resistance.
222 22973301 Selective inhibition of mTORC1 or mTORC2 by shRNA-mediated knockdown of specific components (Raptor and Rictor, respectively) confirmed that mitochondrial effects of rapamycin are mTORC1-dependent, whereas insulin resistance was recapitulated only by knockdown of mTORC2.
223 22973301 Thus, mTORC2 disruption, rather than inhibition of mitochondria, causes insulin resistance in rapamycin-treated myotubes, and this system may serve as a useful model to understand the effects of rapamycin on mTOR signaling in vivo.
224 22973301 Rapamycin has a biphasic effect on insulin sensitivity in C2C12 myotubes due to sequential disruption of mTORC1 and mTORC2.
225 22973301 Rapamycin, an inhibitor of mTOR complex 1 (mTORC1), improves insulin sensitivity in acute studies in vitro and in vivo by disrupting a negative feedback loop mediated by S6 kinase.
226 22973301 We and others have recently observed that chronic rapamycin treatment induces insulin resistance in rodents, at least in part due to disruption of mTORC2, an mTOR-containing complex that is not acutely sensitive to the drug.
227 22973301 Instead, we found dramatic disruption of mTORC2, which coincided with the onset of insulin resistance.
228 22973301 Selective inhibition of mTORC1 or mTORC2 by shRNA-mediated knockdown of specific components (Raptor and Rictor, respectively) confirmed that mitochondrial effects of rapamycin are mTORC1-dependent, whereas insulin resistance was recapitulated only by knockdown of mTORC2.
229 22973301 Thus, mTORC2 disruption, rather than inhibition of mitochondria, causes insulin resistance in rapamycin-treated myotubes, and this system may serve as a useful model to understand the effects of rapamycin on mTOR signaling in vivo.
230 22973301 Rapamycin has a biphasic effect on insulin sensitivity in C2C12 myotubes due to sequential disruption of mTORC1 and mTORC2.
231 22973301 Rapamycin, an inhibitor of mTOR complex 1 (mTORC1), improves insulin sensitivity in acute studies in vitro and in vivo by disrupting a negative feedback loop mediated by S6 kinase.
232 22973301 We and others have recently observed that chronic rapamycin treatment induces insulin resistance in rodents, at least in part due to disruption of mTORC2, an mTOR-containing complex that is not acutely sensitive to the drug.
233 22973301 Instead, we found dramatic disruption of mTORC2, which coincided with the onset of insulin resistance.
234 22973301 Selective inhibition of mTORC1 or mTORC2 by shRNA-mediated knockdown of specific components (Raptor and Rictor, respectively) confirmed that mitochondrial effects of rapamycin are mTORC1-dependent, whereas insulin resistance was recapitulated only by knockdown of mTORC2.
235 22973301 Thus, mTORC2 disruption, rather than inhibition of mitochondria, causes insulin resistance in rapamycin-treated myotubes, and this system may serve as a useful model to understand the effects of rapamycin on mTOR signaling in vivo.
236 23124837 In cells, mTOR is the catalytic subunit of two complexes called mTORC1 and mTORC2, which have distinct upstream regulatory signals and downstream substrates. mTORC1 directly senses cellular nutrient availability while indirectly sensing circulating nutrients through growth factor signaling pathways.
237 23165769 In contrast, mTOR inhibition had no effect on serotonin transport. mTORC1 or mTORC2 silencing markedly decreased the plasma membrane expression of specific System A (SNAT2, SLC38A2) and System L (LAT1, SLC7A5) transporter isoforms without affecting global protein expression.
238 23165769 In conclusion, mTORC1 and mTORC2 regulate human trophoblast amino acid transporters by modulating the cell surface abundance of specific transporter isoforms.
239 23165769 In contrast, mTOR inhibition had no effect on serotonin transport. mTORC1 or mTORC2 silencing markedly decreased the plasma membrane expression of specific System A (SNAT2, SLC38A2) and System L (LAT1, SLC7A5) transporter isoforms without affecting global protein expression.
240 23165769 In conclusion, mTORC1 and mTORC2 regulate human trophoblast amino acid transporters by modulating the cell surface abundance of specific transporter isoforms.
241 23272222 Regulated in development and DNA damage responses -1 (REDD1) protein contributes to insulin signaling pathway in adipocytes.
242 23272222 REDD1 (Regulated in development and DNA damage response 1) is a hypoxia and stress response gene and is a negative regulator of mTORC1.
243 23272222 Since mTORC1 is involved in the negative feedback loop of insulin signaling, we have studied the role of REDD1 on insulin signaling pathway and its regulation by insulin.
244 23272222 In human and murine adipocytes, insulin transiently stimulates REDD1 expression through a MEK dependent pathway.
245 23272222 In HEK-293 cells, expression of a constitutive active form of MEK stabilizes REDD1 and protects REDD1 from proteasomal degradation mediated by CUL4A-DDB1 ubiquitin ligase complex.
246 23272222 In 3T3-L1 adipocytes, silencing of REDD1 with siRNA induces an increase of mTORC1 activity as well as an inhibition of insulin signaling pathway and lipogenesis.
247 23272222 Rapamycin, a mTORC1 inhibitor, restores the insulin signaling after downregulation of REDD1 expression.
248 23272222 This observation suggests that REDD1 positively regulates insulin signaling through the inhibition of mTORC1 activity.
249 23272222 In conclusion, our results demonstrate that insulin increases REDD1 expression, and that REDD1 participates in the biological response to insulin.
250 23272222 Regulated in development and DNA damage responses -1 (REDD1) protein contributes to insulin signaling pathway in adipocytes.
251 23272222 REDD1 (Regulated in development and DNA damage response 1) is a hypoxia and stress response gene and is a negative regulator of mTORC1.
252 23272222 Since mTORC1 is involved in the negative feedback loop of insulin signaling, we have studied the role of REDD1 on insulin signaling pathway and its regulation by insulin.
253 23272222 In human and murine adipocytes, insulin transiently stimulates REDD1 expression through a MEK dependent pathway.
254 23272222 In HEK-293 cells, expression of a constitutive active form of MEK stabilizes REDD1 and protects REDD1 from proteasomal degradation mediated by CUL4A-DDB1 ubiquitin ligase complex.
255 23272222 In 3T3-L1 adipocytes, silencing of REDD1 with siRNA induces an increase of mTORC1 activity as well as an inhibition of insulin signaling pathway and lipogenesis.
256 23272222 Rapamycin, a mTORC1 inhibitor, restores the insulin signaling after downregulation of REDD1 expression.
257 23272222 This observation suggests that REDD1 positively regulates insulin signaling through the inhibition of mTORC1 activity.
258 23272222 In conclusion, our results demonstrate that insulin increases REDD1 expression, and that REDD1 participates in the biological response to insulin.
259 23272222 Regulated in development and DNA damage responses -1 (REDD1) protein contributes to insulin signaling pathway in adipocytes.
260 23272222 REDD1 (Regulated in development and DNA damage response 1) is a hypoxia and stress response gene and is a negative regulator of mTORC1.
261 23272222 Since mTORC1 is involved in the negative feedback loop of insulin signaling, we have studied the role of REDD1 on insulin signaling pathway and its regulation by insulin.
262 23272222 In human and murine adipocytes, insulin transiently stimulates REDD1 expression through a MEK dependent pathway.
263 23272222 In HEK-293 cells, expression of a constitutive active form of MEK stabilizes REDD1 and protects REDD1 from proteasomal degradation mediated by CUL4A-DDB1 ubiquitin ligase complex.
264 23272222 In 3T3-L1 adipocytes, silencing of REDD1 with siRNA induces an increase of mTORC1 activity as well as an inhibition of insulin signaling pathway and lipogenesis.
265 23272222 Rapamycin, a mTORC1 inhibitor, restores the insulin signaling after downregulation of REDD1 expression.
266 23272222 This observation suggests that REDD1 positively regulates insulin signaling through the inhibition of mTORC1 activity.
267 23272222 In conclusion, our results demonstrate that insulin increases REDD1 expression, and that REDD1 participates in the biological response to insulin.
268 23272222 Regulated in development and DNA damage responses -1 (REDD1) protein contributes to insulin signaling pathway in adipocytes.
269 23272222 REDD1 (Regulated in development and DNA damage response 1) is a hypoxia and stress response gene and is a negative regulator of mTORC1.
270 23272222 Since mTORC1 is involved in the negative feedback loop of insulin signaling, we have studied the role of REDD1 on insulin signaling pathway and its regulation by insulin.
271 23272222 In human and murine adipocytes, insulin transiently stimulates REDD1 expression through a MEK dependent pathway.
272 23272222 In HEK-293 cells, expression of a constitutive active form of MEK stabilizes REDD1 and protects REDD1 from proteasomal degradation mediated by CUL4A-DDB1 ubiquitin ligase complex.
273 23272222 In 3T3-L1 adipocytes, silencing of REDD1 with siRNA induces an increase of mTORC1 activity as well as an inhibition of insulin signaling pathway and lipogenesis.
274 23272222 Rapamycin, a mTORC1 inhibitor, restores the insulin signaling after downregulation of REDD1 expression.
275 23272222 This observation suggests that REDD1 positively regulates insulin signaling through the inhibition of mTORC1 activity.
276 23272222 In conclusion, our results demonstrate that insulin increases REDD1 expression, and that REDD1 participates in the biological response to insulin.
277 23272222 Regulated in development and DNA damage responses -1 (REDD1) protein contributes to insulin signaling pathway in adipocytes.
278 23272222 REDD1 (Regulated in development and DNA damage response 1) is a hypoxia and stress response gene and is a negative regulator of mTORC1.
279 23272222 Since mTORC1 is involved in the negative feedback loop of insulin signaling, we have studied the role of REDD1 on insulin signaling pathway and its regulation by insulin.
280 23272222 In human and murine adipocytes, insulin transiently stimulates REDD1 expression through a MEK dependent pathway.
281 23272222 In HEK-293 cells, expression of a constitutive active form of MEK stabilizes REDD1 and protects REDD1 from proteasomal degradation mediated by CUL4A-DDB1 ubiquitin ligase complex.
282 23272222 In 3T3-L1 adipocytes, silencing of REDD1 with siRNA induces an increase of mTORC1 activity as well as an inhibition of insulin signaling pathway and lipogenesis.
283 23272222 Rapamycin, a mTORC1 inhibitor, restores the insulin signaling after downregulation of REDD1 expression.
284 23272222 This observation suggests that REDD1 positively regulates insulin signaling through the inhibition of mTORC1 activity.
285 23272222 In conclusion, our results demonstrate that insulin increases REDD1 expression, and that REDD1 participates in the biological response to insulin.
286 23395167 LRP6 enhances glucose metabolism by promoting TCF7L2-dependent insulin receptor expression and IGF receptor stabilization in humans.
287 23395167 Further investigations showed that the LRP6(R611C) mutation diminishes TCF7L2-dependent transcription of the IR while it increases the stability of IGFR and enhances mTORC1 activity.
288 23395167 These findings identify the Wnt/LRP6/TCF7L2 axis as a regulator of glucose metabolism and a potential therapeutic target for insulin resistance.
289 23400783 The model structure and parameters are identical in the normal and diabetic states of the model, except for three parameters that change in diabetes: (i) reduced concentration of insulin receptor, (ii) reduced concentration of insulin-regulated glucose transporter GLUT4, and (iii) changed feedback from mammalian target of rapamycin in complex with raptor (mTORC1).
290 23400783 Modeling reveals that at the core of insulin resistance in human adipocytes is attenuation of a positive feedback from mTORC1 to the insulin receptor substrate-1, which explains reduced sensitivity and signal strength throughout the signaling network.
291 23400783 The model structure and parameters are identical in the normal and diabetic states of the model, except for three parameters that change in diabetes: (i) reduced concentration of insulin receptor, (ii) reduced concentration of insulin-regulated glucose transporter GLUT4, and (iii) changed feedback from mammalian target of rapamycin in complex with raptor (mTORC1).
292 23400783 Modeling reveals that at the core of insulin resistance in human adipocytes is attenuation of a positive feedback from mTORC1 to the insulin receptor substrate-1, which explains reduced sensitivity and signal strength throughout the signaling network.
293 23624629 Deletion of mTOR reduced mTORC1 and mTORC2 signaling after in vivo insulin stimulation.
294 23624629 Consistent with reduced palmitate oxidation, expression of fatty acid metabolism genes fatty acid-binding protein 3, medium-chain acyl-CoA dehydrogenase, and hydroxyacyl-CoA dehydrogenase/3-ketoacyl-CoA thiolase/enoyl-CoA hydratase (trifunctional protein)-α and -β was reduced, and carnitine palmitoyl transferase-1 and -2 enzymatic activity was decreased.
295 23624629 However, mRNA for peroxisome proliferator-activated receptor-γ coactivator (PGC)-1α and -1β, protein levels of PGC-1α, and electron transport chain subunits, mitochondrial DNA, and morphology were unchanged.
296 23641065 This kinase, which is part of two protein complexes termed mTOR complex 1 (mTORC1) and 2 (mTORC2), has a fundamental role in coordinating anabolic and catabolic processes in response to growth factors and nutrients.
297 23641065 Here, we review the connections between mTORC1 and gene transcription by focusing on its impact in regulating the activation of specific transcription factors including including STAT3, SREBPs, PPARγ, PPARα, HIF1α, YY1–PGC1α and TFEB.
298 23641065 This kinase, which is part of two protein complexes termed mTOR complex 1 (mTORC1) and 2 (mTORC2), has a fundamental role in coordinating anabolic and catabolic processes in response to growth factors and nutrients.
299 23641065 Here, we review the connections between mTORC1 and gene transcription by focusing on its impact in regulating the activation of specific transcription factors including including STAT3, SREBPs, PPARγ, PPARα, HIF1α, YY1–PGC1α and TFEB.
300 23698095 The target of rapamycin (TOR) is an evolutionarily conserved protein kinase that regulates cell growth in response to various environmental as well as intracellular cues through the formation of 2 distinct TOR complexes (TORC), TORC1 and TORC2.
301 23698095 Dysregulation of TORC1 and TORC2 activity is closely associated with various diseases, including diabetes, cancer and neurodegenerative disorders.
302 23698095 Over the past few years, new regulatory mechanisms of TORC1 and TORC2 activity have been elucidated.
303 23698095 The target of rapamycin (TOR) is an evolutionarily conserved protein kinase that regulates cell growth in response to various environmental as well as intracellular cues through the formation of 2 distinct TOR complexes (TORC), TORC1 and TORC2.
304 23698095 Dysregulation of TORC1 and TORC2 activity is closely associated with various diseases, including diabetes, cancer and neurodegenerative disorders.
305 23698095 Over the past few years, new regulatory mechanisms of TORC1 and TORC2 activity have been elucidated.
306 23698095 The target of rapamycin (TOR) is an evolutionarily conserved protein kinase that regulates cell growth in response to various environmental as well as intracellular cues through the formation of 2 distinct TOR complexes (TORC), TORC1 and TORC2.
307 23698095 Dysregulation of TORC1 and TORC2 activity is closely associated with various diseases, including diabetes, cancer and neurodegenerative disorders.
308 23698095 Over the past few years, new regulatory mechanisms of TORC1 and TORC2 activity have been elucidated.
309 23747347 AMPK is an αβγ heterotrimer controlled by allosteric regulation by AMP, ADP and ATP, auto-inhibitory features and phosphorylation, with the threonine-172 phosphorylation on the catalytic α-subunit by LKB1, CaMKKβ or Tak1 being essential for its fully activation.
310 23747347 In cancer, correction of the dysregulated metabolic pathway LKB1/AMPK/mTORC1 can lower the Warburg effect, suggesting AMPK as a potential target for cancer prevention and/or treatment.
311 23858058 Recently, we have found that insulin inhibits lipolysis and promotes triglyceride storage by decreasing transcription of adipose triglyceride lipase via the mTORC1-mediated pathway (P.
312 23858058 One member of the family, Egr1, is induced by insulin and nutrients and directly inhibits activity of the ATGL promoter in vitro and expression of ATGL in cultured adipocytes.
313 23858058 Feeding animals a high-fat diet increases the activity of mTORC1 and the expression of Egr1 while decreasing ATGL levels in epididymal fat.
314 23901139 Phosphatidylcholine transfer protein interacts with thioesterase superfamily member 2 to attenuate insulin signaling.
315 23901139 Phosphatidylcholine transfer protein (PC-TP) is a phospholipid-binding protein that is enriched in liver and that interacts with thioesterase superfamily member 2 (THEM2).
316 23901139 We found that PC-TP inhibited IRS2, as evidenced by insulin-independent IRS2 activation after knockdown, genetic ablation, or chemical inhibition of PC-TP.
317 23901139 In addition, IRS2 was activated after knockdown of THEM2, providing support for a role for the interaction of PC-TP with THEM2 in suppressing insulin signaling.
318 23901139 Additionally, we showed that PC-TP bound to tuberous sclerosis complex 2 (TSC2) and stabilized the components of the TSC1-TSC2 complex, which functions to inhibit mTORC1.
319 23901139 Preventing phosphatidylcholine from binding to PC-TP disrupted interactions of PC-TP with THEM2 and TSC2, and disruption of the PC-TP-THEM2 complex was associated with increased activation of both IRS2 and mTORC1.
320 23901139 In livers of mice with genetic ablation of PC-TP or that had been treated with a PC-TP inhibitor, steady-state amounts of IRS2 were increased, whereas those of TSC2 were decreased.