title: Global comparison of gene expression profiles between intramuscular and subcutaneous adipocytes of neonatal landrace pig using microarray.
abstract: The objective of this study was to compare the differences of gene expression profiles between intramuscular and subcutaneous adipocytes originated from the isolated preadipocytes in vitro. Cytosolic triglyceride determination indicated that subcutaneous adipocytes accumulated more lipid than intramuscular adipocytes did at the late stage of differentiation. Microarray assay revealed that 172 probes representing 133 genes were differentially expressed, among which 46 genes were highly expressed in intramuscular adipocytes and the other 87 genes were highly expressed in subcutaneous adipocytes. Real-time PCR confirmed that genes related to lipid metabolism, such as LPL, FABP4, FABP5 and OSBPL10, were predominantly expressed in subcutaneous adipocytes, whereas BMP4 and BMP7 were highly expressed in intramuscular adipocytes. The results indicated that the accumulation of lipid mass in subcutaneous adipocytes might be due to the highly expressed genes related to lipid metabolism, and the high levels of BMP4 and BMP7 in intramuscular adipocytes suggested that BMPs might be involved in the differentiation of intramuscular adipocytes.
authors.affiliation: Laboratory of Animal Physiology and Biochemistry, College of Animal Science, South China Agricultural University, Wushan Avenue, Tianhe District, Guangzhou 510642, PR China.
authors.forename: Guixuan
authors.initials: G
authors.lastname: Zhou
authors.forename: Songbo
authors.initials: S
authors.lastname: Wang
authors.forename: Zhonggang
authors.initials: Z
authors.lastname: Wang
authors.forename: Xiaotong
authors.initials: X
authors.lastname: Zhu
authors.forename: Gang
authors.initials: G
authors.lastname: Shu
authors.forename: Weiyi
authors.initials: W
authors.lastname: Liao
authors.forename: Kaifan
authors.initials: K
authors.lastname: Yu
authors.forename: Ping
authors.initials: P
authors.lastname: Gao
authors.forename: Qianyun
authors.initials: Q
authors.lastname: Xi
authors.forename: Xiuqi
authors.initials: X
authors.lastname: Wang
authors.forename: Yongliang
authors.initials: Y
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Yuan
authors.forename: Qingyan
authors.initials: Q
authors.lastname: Jiang
mesh_terms: D017667:Adipocytes / Q000378:metabolism*; D000273:Adipose Tissue / Q000166:cytology / Q000378:metabolism*; D000818:Animals; D000831:Animals, Newborn; D015870:Gene Expression; D020869:Gene Expression Profiling; D050356:Lipid Metabolism; D008460:Meat / Q000592:standards; D046228:Microarray Analysis / Q000379:methods; D018482:Muscle, Skeletal / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D050151:Subcutaneous Fat / Q000166:cytology / Q000378:metabolism*; D013552:Swine / Q000235:genetics* / Q000378:metabolism