Ignet

Gene Pair Information

Gene Pair: IRS1, INSR

Related Sentences

#	PMID	Sentence
1	1316358	Non-tyrosine kinase pathways that could signal insulin effects through the insulin receptor include non-covalent activation of G proteins, phospholipase Cs, or docking proteins such as IRS-1.
2	1385403	Some IRS-1 associated with the insulin receptor during insulin stimulation.
3	7520127	The differentiation of 3T3-F442A cells was characterized by a 13-fold increase in insulin receptor protein, a 9-fold increase in IRS-1, and a 10- and 4.5-fold increase in their insulin-stimulated phosphorylation, respectively.
4	8088704	In this model system, activation of protein kinase C is shown to interfere with insulin receptor signalling by inhibiting tyrosine phosphorylation of IRS-1 and its subsequent binding by phosphatidylinositol 3-kinase.
5	7895862	After phosphorylation by the insulin receptor, IRS-1 binds to the specific molecules which possess SH2 (src homology 2) domain such as 85 kDa subunit of phosphatidylinositol 3 kinase and may mediate insulin signals.
6	7895862	In animal models of insulin resistance, phosphorylation of IRS-1 was mainly regulated by the insulin receptor tyrosine kinase both in liver and muscle.
7	7540574	Both glucose and insulin stimulate the tyrosine phosphorylation of the insulin receptor substrate (IRS) IRS-1 and increase by two- to fivefold the rapid association of IRS-1 with the 85-kDa alpha-subunit of the phosphatidylinositol-3-kinase, as determined by co-immunoprecipitation assays.
8	8798677	Interaction domains located in the NH2 terminus of IRS-1 mediate its recognition by the insulin receptor.
9	9421369	To elucidate the mechanism of obesity-related insulin resistance, we investigated the impaired steps in the processes of phosphatidylinositol (PI) 3-kinase activation through binding with insulin receptor substrates 1 and 2 (IRS-1 and IRS-2) in liver and muscle of Zucker fatty rats.
10	11287365	However, the upstream signal, including phosphorylation of the insulin receptor (IR) and insulin receptor substrate (IRS)-1 and -2 and activity of phosphatidylinositol (PI) 3-kinase associated with IRS-1/2, was enhanced.
11	12510059	One potential mechanism for this is that Ser/Thr phosphorylation decreases the ability of IRS-1 to be tyrosine-phosphorylated by the insulin receptor.
12	12594228	In summary, (i) PI3K mediates insulin-induced reduction of IRS-1 by phosphorylating it while a PI3K/mTOR pathway controls insulin-induced reduction of IRS-2, (ii) in L6 cells, IRS-2 is the major adapter molecule linking the insulin receptor to activation of PKB and MAPK, (iii) the mechanism of IRS-1/2 down-regulation is different in L6 cells compared with 3T3-L1 adipocytes.
13	15590636	Taken together, these data indicate that the G972R naturally occurring polymorphism of IRS-1 not only reduces phosphorylation of the substrate but allows IRS-1 to act as an inhibitor of the insulin receptor kinase, producing global insulin resistance.
14	15711641	In many cases, insulin resistance in liver is associated with reduced expression of both major insulin receptor substrate (IRS) proteins, IRS-1 and IRS-2.
15	15950750	BMC were insulin resistant, showing a significant inhibition of IRS-1 association with the insulin receptor (IR) following insulin stimulation, a corresponding increase in PI 3-kinase association with the IR, and a slow and modest increase in GLUT4 recruitment to the plasma membrane.
16	16341686	Although insulin receptor protein level and phosphorylation were unaltered by resistin, production of IRS-1, but not IRS-2, was downregulated and a decreased tyrosine phosphorylation of IRS-1 was detected.
17	17575262	Without affecting autophosphorylation of the insulin receptor, RBP4 blocked the insulin-stimulated phosphorylation of IRS1 at serine (307) [corresponding to serine (302) in the murine sequence] and concomitantly increased the EC50 (from 0.5 to 2 nM) for insulin stimulation of IRS1 phosphorylation at tyrosine.
18	18408913	In 30-week-old C57BL/6 and JYD mice, the basal levels of IRS-1, Akt and peroxisome proliferator-activated receptor-gamma decreased, as did insulin-stimulated phosphorylation of Akt and insulin receptor beta.
19	18599621	The overfed animals also had decreased insulin sensitivity in the heart, as confirmed by decreased insulin receptor (IR)-beta and IR substrate-1 (Irs1) phosphorylation, increased phosphatase, non-receptor type 1 (Ptpn1)-IR-beta association, decreased -Irs1-associated activity, and reduction in anti-phospho Akt1 phosphorylation.
20	19276091	Insulin-stimulated phosphatidylinositol 3-kinase activity associated with IRS-1 or phospho-tyrosine was also reduced approximately 40% without any alteration in tyrosine phosphorylation of insulin receptor in skeletal muscle.
21	11679436	In contrast, the FH(+) group had decreased insulin stimulation of insulin receptor substrate (IRS)-1 tyrosine phosphorylation (0.522 +/- 0.077 vs. 1.328 +/- 0.115 density units; P < 0.01) and association of PI 3-kinase activity with IRS-1 (0.299 +/- 0.053 vs. 0.466 +/- 0.098 activity units; P < 0.05).
22	16198620	This results in down regulation of insulin receptor substance 1 (IRS-1) signaling by excess free fatty acids.
23	21959757	Genetic and biochemical evidence also implicates protein-tyrosine phosphatases in several disease processes, including negative regulation of insulin receptor signaling at the level of the insulin receptor and perhaps in signaling at the IRS-1 level.
24	16960890	TNF-alpha pre-incubation also showed reduced insulin-stimulated Tyr phosphorylation of insulin receptor (IR-beta) in both the cell types, moreover hyperphosphorylation of IRS-1 at Ser 312 residue was observed in TNF-alpha pre-incubated cells.