| First Author | Hyun CK | Year | 2010 |
| Journal | Biochem Biophys Res Commun | Volume | 399 |
| Issue | 4 | Pages | 480-6 |
| PubMed ID | 20655875 | Mgi Jnum | J:164913 |
| Mgi Id | MGI:4835619 | Doi | 10.1016/j.bbrc.2010.07.072 |
| Citation | Hyun CK, et al. (2010) Adipose-specific deletion of stearoyl-CoA desaturase 1 up-regulates the glucose transporter GLUT1 in adipose tissue. Biochem Biophys Res Commun 399(4):480-6 |
| abstractText | Stearoyl-CoA desaturase 1 (SCD1) deficiency protects mice from diet-induced obesity and insulin resistance. To understand the tissue-specific role of SCD1 in energy homeostasis, we have generated mice with an adipose-specific knockout of Scd1 (AKO), and report here that SCD1 deficiency increases GLUT1 expression in adipose tissue of AKO mice, but not global SCD1 knockout (GKO) mice. In 3T3-L1 adipocytes treated with an SCD inhibitor, basal glucose uptake and the cellular expression of GLUT1 were significantly increased while GLUT4 expression remained unchanged. Consistently, adipose-specific SCD1 knockout (AKO) mice had significantly elevated GLUT1 expression, but not GLUT4, in white adipose tissue compared to Lox counterparts. Concurrently, adiponectin expression was significantly diminished, whereas TNF-alpha expression was elevated. In contrast, in adipose tissue of GKO mice, GLUT4 and adiponectin expression were significantly elevated with lowered TNF-alpha expression and little change in GLUT1 expression, suggesting a differential responsiveness of adipose tissue to global- or adipose-specific SCD1 deletion. Taken together, these results indicate that adipose-specific deletion of SCD1 induces GLUT1 up-regulation in adipose tissue, associated with decreased adiponectin and increased TNF-alpha production, and suggest that GLUT1 may play a critical role in controlling glucose homeostasis of adipose tissue in adipose-specific SCD1-deficient conditions. |
