title: Mitochondrial oxidative phosphorylation reserve is required for hormone- and PPARγ agonist-induced adipogenesis.
abstract: Adipocyte differentiation requires the coordinated activities of several nuclear transcription factors. Recently, mitochondria biogenesis was reported to occur during adipocyte differentiation and following treatment with thiazolidinediones in vitro and in vivo. Crif1 is a translational factor for mitochondrial DNA (mtDNA) and is important for transcription of the mitochondrial oxidative phosphorylation (OXPHOS) complex. To investigate the role of OXPHOS in adipogenesis, we analyzed adipocyte differentiation following disruption of Crif1 in vitro and in vivo. The adipose-specific Crif1 knockout mouse had a lower body weight and less fat mass than wild-type mice. Furthermore, adipocytes were smaller and had a dysplastic morphology in the adipose-specific Crif1 knockout mouse. 3T3-L1 adipocytes or adipose-derived stem cells (ADSCs) that lacked Crif1 expressed lower levels of mtDNA-encoded OXPHOS subunits, and adipocyte differentiation was disrupted. Rosiglitazone treatment did not induce adipogenesis or mitochondria biogenesis in Crif1 knockout ADSCs. These results show that mitochondrial OXPHOS and Crif1 are required for rosiglitazone- and hormone-induced adipogenesis.
authors: Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea.
authors: Min Jeong
authors: MJ
authors: Ryu
authors: Soung Jung
authors: SJ
authors: Kim
authors: Min Jeong
authors: MJ
authors: Choi
authors: Yong Kyung
authors: YK
authors: Kim
authors: Min Hee
authors: MH
authors: Lee
authors: Seong Eun
authors: SE
authors: Lee
authors: Hyo Kyun
authors: HK
authors: Chung
authors: Saet Byel
authors: SB
authors: Jung
authors: Hyun-Jin
authors: HJ
authors: Kim
authors: Koon Soon
authors: KS
authors: Kim
authors: Young Suk
authors: YS
authors: Jo
authors: Gi Ryang
authors: GR
authors: Kweon
authors: Chul-Ho
authors: CH
authors: Lee
authors: Minho
authors: M
authors: Shong
mesh_terms: D041721:3T3-L1 Cells; D050156:Adipogenesis / Q000187:drug effects*; D052242:Adiponectin / Q000819:agonists; D000818:Animals; D018797:Cell Cycle Proteins / Q000235:genetics / Q000378:metabolism*; D051545:Cyclooxygenase 1 / Q000378:metabolism; D004996:Ethidium / Q000494:pharmacology; D054890:Fatty Acid Synthase, Type I / Q000378:metabolism; D055786:Gene Knockout Techniques; D008565:Membrane Proteins / Q000378:metabolism; D051379:Mice; D008810:Mice, Inbred C57BL; D008928:Mitochondria / Q000378:metabolism*; D010085:Oxidative Phosphorylation / Q000187:drug effects*; D047495:PPAR gamma / Q000819:agonists* / Q000235:genetics; D000077154:Rosiglitazone; D045162:Thiazolidinediones / Q000494:pharmacology*
chemical_list: D052242:Adiponectin; D018797:Cell Cycle Proteins; C527307:Crif1 protein, mouse; D008565:Membrane Proteins; D047495:PPAR gamma; D045162:Thiazolidinediones; D000077154:Rosiglitazone; D051545:Cyclooxygenase 1; C496512:Ptgs1 protein, mouse; D054890:Fatty Acid Synthase, Type I; D004996:Ethidium