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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lebrun, P. Van Obberghen, E. |
| Description | Country affiliation: France Author Affiliation: Lebrun P ( Inserm, U145, Faculté de Médecine, Institut de Génétique et Signalisation Moléculaire (IFR50), Université de Nice-Sophia Antipolis, et Laboratoire de Biochimie, CHU, Nice, France.) |
| Abstract | First discovered as inhibitors of cytokine signalling, the suppressor of cytokine signalling (SOCS) proteins have appeared, over recent years, as potent repressors of other signalling pathways including the one induced by insulin. SOCS-1 and SOCS-3 have been extensively studied both in vitro and in vivo in the context of insulin action. It has been shown that these two SOCS members are able to inhibit the insulin signalling pathway by three different mechanisms: (1) inhibition of tyrosine phosphorylation of insulin receptor substrate (IRS) proteins because of competition at the docking site on the insulin receptor (IR), (2) induction of the proteasomal degradation of the IRS and (3) inhibition of the IR kinase. A key feature of the SOCS proteins is that they are induced regulators. Indeed, expression of SOCS proteins is virtually absent in basal conditions, but is rapidly and robustly induced in response to several stimuli such as hormones, cytokines and growth factors. A significant correlation between SOCS-3 expression and insulin resistance has been demonstrated in vivo. Interestingly, the level of SOCS-3 expression is strikingly enhanced in insulin-sensitive tissues from both patients and animal models with type 2 diabetes and insulin resistance. While it remains to be established whether the increased expression of SOCS is a cause or a consequence of insulin resistance, a large body of observations supports a role for SOCS proteins in the disease process found in states with insulin resistance. |
| File Format | HTM / HTML |
| ISSN | 17481708 |
| Issue Number | 1 |
| Volume Number | 192 |
| e-ISSN | 17481716 |
| Journal | Acta Physiologica |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2008-01-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Physiology Insulin Physiology Suppressor Of Cytokine Signaling Proteins Animals Diabetes Mellitus, Type 2 Physiopathology Humans Insulin Resistance Mice Obesity Rats Signal Transduction Journal Article Review |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology |
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