Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 류동열 | * |
dc.date.accessioned | 2019-03-27T16:30:02Z | - |
dc.date.available | 2019-03-27T16:30:02Z | - |
dc.date.issued | 2019 | * |
dc.identifier.issn | 1474-9718 | * |
dc.identifier.issn | 1474-9726 | * |
dc.identifier.other | OAK-24529 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/249492 | - |
dc.description.abstract | Although it is known that the expression and activity of sirtuin 1 (Sirt1) decrease in the aged kidney, the role of interaction between Sirt1 and hypoxia-inducible factor (HIF)-1 alpha is largely unknown. In this study, we investigated whether HIF-1 alpha could be a deacetylation target of Sirt1 and the effect of their interaction on age-associated renal injury. Five-week-old (young) and 24-month-old (old) C57Bl/6J mice were assessed for their age-associated changes. Kidneys from aged mice showed increased infiltration of CD68-positive macrophages, higher expression of extracellular matrix (ECM) proteins, and more apoptosis than young controls. They also showed decreased Sirt1 expression along with increased acetylated HIF-1 alpha. The level of Bcl-2/adenovirus E1B-interacting protein 3, carbonic anhydrase 9, Snail, and transforming growth factor-beta 1, which are regulated by HIF-1 alpha, was significantly higher in aged mice suggesting that HIF-1 alpha activity was increased. In HK-2 cells, Sirt1 inhibitor sirtinol and siRNA-mediated knockdown of Sirt1 enhanced apoptosis and ECM accumulation. During hypoxia, Sirt1 was down-regulated, which allowed the acetylation and activation of HIF-1 alpha. Resveratrol, a Sirt1 activator, effectively prevented hypoxia-induced production of ECM proteins, mitochondrial damage, reactive oxygen species generation, and apoptosis. The inhibition of HIF-1 alpha activity by Sirt1-induced deacetylation of HIF-1 alpha was confirmed by Sirt1 overexpression under hypoxic conditions and by resveratrol treatment or Sirt1 overexpression in HIF-1 alpha-transfected HK-2 cells. Finally, we confirmed that chronic activation of HIF-1 alpha promoted apoptosis and fibrosis, using tubular cell-specific HIF-1 alpha transgenic mice. Taken together, our data suggest that Sirt1-induced deacetylation of HIF-1 alpha may have protective effects against tubulointerstitial damage in aged kidney. | * |
dc.language | English | * |
dc.publisher | WILEY | * |
dc.subject | age | * |
dc.subject | deacetylation | * |
dc.subject | HIF-1 alpha | * |
dc.subject | Sirt1 | * |
dc.title | Sirt1-hypoxia-inducible factor-1 alpha interaction is a key mediator of tubulointerstitial damage in the aged kidney | * |
dc.type | Article | * |
dc.relation.issue | 2 | * |
dc.relation.volume | 18 | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | AGING CELL | * |
dc.identifier.doi | 10.1111/acel.12904 | * |
dc.identifier.wosid | WOS:000460963500017 | * |
dc.identifier.scopusid | 2-s2.0-85062869746 | * |
dc.author.google | Ryu, Dong Ryeol | * |
dc.author.google | Yu, Mi Ra | * |
dc.author.google | Kong, Kyoung Hye | * |
dc.author.google | Kim, Hyoungnae | * |
dc.author.google | Kwon, Soon Hyo | * |
dc.author.google | Jeon, Jin Seok | * |
dc.author.google | Han, Dong Cheol | * |
dc.author.google | Noh, Hyunjin | * |
dc.contributor.scopusid | 류동열(7103144218;56997547400;56669926200) | * |
dc.date.modifydate | 20240123102517 | * |