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Effects of rosiglitazone on proliferation and differentiation of duck preadipocytes Animal

Ding, Fang, Qiu, Jiamin, Li, Qingqing, Hu, Jiwei, Song, Chenling, Han, Chunchun, He, Hua, Wang, Jiwen
In vitro cellular & developmental biology 2016 v.52 no.2 pp. 174-181
animal models, cell differentiation, cell viability, cholecystokinin, culture media, dose response, ducks, enzyme-linked immunosorbent assay, free fatty acids, gene expression, gene expression regulation, genes, humans, hypoglycemic agents, in vitro studies, lipid content, lipogenesis, lipolysis, messenger RNA, oleic acid, protein content, quantitative polymerase chain reaction, reverse transcriptase polymerase chain reaction, staining, thiazolidinediones, waterfowl
Rosiglitazone (RSG), one member of the thiazolidinediones (TZDs), is a type of anti-diabetic drug in diabetic humans and animal models, whose function remains unknown in waterfowl. In this study, effects of RSG on duck preadipocyte differentiation were investigated. We detected cell viability using CCK method and measured the mRNA expression of key genes and protein contents involved in preadipocyte differentiation via qRT-PCR and ELISA kits, respectively. Lipid accumulation was determined via Oil Red O staining extraction, and lipolysis was measured by free fatty acid release in the culture medium. Results showed that high concentrations of RSG (50, 100 μM) significantly decreased cell viability. RSG (0–10 μM) enhanced preadipocyte differentiation in a dose-dependent manner and thus promoted lipid accumulation. With increasing RSG concentrations, cellular lipid content gradually decreased and preadipocyte differentiation was suppressed. mRNA expression of key genes involved in preadipocyte differentiation including FAS, ACC, SCD1, LPL, PLIN, SREBP1c, and ATGL were significantly upregulated by RSG, and the protein content of FAS, ACC, and ATGL were also increased in response to RSG. Meanwhile, RSG exposure increased free fatty acid release in the culture medium. Similar results were obtained in response to RSG plus oleate that was used to induce cell differentiation. These findings suggest that RSG does not promote duck preadipocyte viability, but it does induce duck preadipocyte differentiation, which might influence both lipogenesis and lipolysis pathways.