| First Author | Romero M | Year | 2018 |
| Journal | Nat Cell Biol | Volume | 20 |
| Issue | 4 | Pages | 443-454 |
| PubMed ID | 29593329 | Mgi Jnum | J:327176 |
| Mgi Id | MGI:6716524 | Doi | 10.1038/s41556-018-0072-9 |
| Citation | Romero M, et al. (2018) TP53INP2 regulates adiposity by activating beta-catenin through autophagy-dependent sequestration of GSK3beta. Nat Cell Biol 20(4):443-454 |
| abstractText | Excessive fat accumulation is a major risk factor for the development of type 2 diabetes mellitus and other common conditions, including cardiovascular disease and certain types of cancer. Here, we identify a mechanism that regulates adiposity based on the activator of autophagy TP53INP2. We report that TP53INP2 is a negative regulator of adipogenesis in human and mouse preadipocytes. In keeping with this, TP53INP2 ablation in mice caused enhanced adiposity, which was characterized by greater cellularity of subcutaneous adipose tissue and increased expression of master adipogenic genes. TP53INP2 modulates adipogenesis through autophagy-dependent sequestration of GSK3beta into late endosomes. GSK3beta sequestration was also dependent on ESCRT activity. As a result, TP53INP2 promotes greater beta-catenin levels and induces the transcriptional activity of TCF/LEF transcription factors. These results demonstrate a link between autophagy, sequestration of GSK3beta into late endosomes and inhibition of adipogenesis in vivo. |
