title: Gene expression profiling of SIRT1, FoxO1, and PPARγ in backfat tissues and subcutaneous adipocytes of Lilu bulls.
abstract: The temporal pattern of gene expression of sirtuin 1 (SIRT1), forkhead box O1 (FoxO1), and peroxisome proliferator-activated receptor-γ (PPARγ) in differentiating bovine preadipocytes and in backfat tissue from Lilu bulls 12, 18, 24, and 30 months old was investigated using real-time quantitative PCR; Carcass characteristics and adipocyte diameters were also measured. The upregulation of PPARγ and the downregulation of SIRT1 and FoxO1 were observed in the backfat tissue of Lilu cattle with increasing age. Moreover, the results showed that fat accumulation in Lilu cattle may primarily be related to an increase in mature fat cell numbers after 18 months of age. The present study indicates SIRT1 may play an important role in the development of bovine adipose tissue in vivo. Although SIRT1, FoxO1, and PPARγ expression appeared to be nonlinear during the stages of preadipocyte differentiation, these genes play an important role during bovine adipocyte development in Lilu cattle.
authors.affiliation: Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Sangyuan Road Number 8, Ji'nan City, Shandong Province, 250100, China; Shandong Key Lab of Animal Disease Control and Breeding, Sangyuan Road Number 8, Ji'nan City, Shandong Province, 250100, China.
authors.forename: Xiaomu
authors.initials: X
authors.lastname: Liu
authors.forename: Guifen
authors.initials: G
authors.lastname: Liu
authors.forename: Xiuwen
authors.initials: X
authors.lastname: Tan
authors.forename: Hongbo
authors.initials: H
authors.lastname: Zhao
authors.forename: Haijian
authors.initials: H
authors.lastname: Cheng
authors.forename: Fachun
authors.initials: F
authors.lastname: Wan
authors.forename: Naike
authors.initials: N
authors.lastname: Wu
authors.forename: Enliang
authors.initials: E
authors.lastname: Song
mesh_terms: D017667:Adipocytes / Q000166:cytology* / Q000378:metabolism; D000818:Animals; D002417:Cattle; D002454:Cell Differentiation / Q000502:physiology; D051858:Forkhead Transcription Factors / Q000235:genetics* / Q000378:metabolism; D020869:Gene Expression Profiling; D008297:Male; D047495:PPAR gamma / Q000235:genetics* / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D056564:Sirtuin 1 / Q000235:genetics* / Q000378:metabolism; D050151:Subcutaneous Fat / Q000166:cytology* / Q000378:metabolism
chemical_list: D051858:Forkhead Transcription Factors; D047495:PPAR gamma; D012333:RNA, Messenger; D056564:Sirtuin 1
keywords: Backfat tissue; Forkhead box O1; Peroxisome proliferator-activated receptor-γ; Sirtuin 1; Subcutaneous adipocytes