Human Gene Set: GERHOLD_ADIPOGENESIS_DN

For the Mouse gene set with the same name, see GERHOLD_ADIPOGENESIS_DN

Standard name GERHOLD_ADIPOGENESIS_DN
Systematic name M1576
Brief description Selected genes down-regulated during differentiation of 3T3-L1 cells (fibroblast) into adipocytes in response to adipogenic hormones.
Full description or abstract PPAR gamma is an adipocyte-specific nuclear hormone receptor. Agonists of PPAR gamma, such as thiazolidinediones (TZDs), promote adipocyte differentiation and have insulin-sensitizing effects in animals and diabetic patients. Affymetrix oligonucleotide arrays representing 6347 genes were employed to profile the gene expression responses of mature 3T3-L1 adipocytes and differentiating preadipocytes to a TZD PPAR gamma agonist in vitro. The expression of 579 genes was significantly up- or down-regulated by more than 1.5-fold during differentiation and/or by treatment with TZD, and these genes were organized into 32 clusters that demonstrated concerted changes in expression of genes controlling cell growth or lipid metabolism. Quantitative PCR was employed to further characterize gene expression and led to the identification of beta-catenin as a new PPAR gamma target gene. Both mRNA and protein levels for beta-catenin were down-regulated in 3T3-L1 adipocytes compared with fibroblasts and were further decreased by treatment of adipocytes with PPAR gamma agonists. Treatment of db/db mice with a PPAR gamma agonist also resulted in reduction of beta-catenin mRNA levels in adipose tissue. These results suggest that beta-catenin plays an important role in the regulation of adipogenesis. Thus, the transcriptional patterns revealed in this study further the understanding of adipogenesis process and the function of PPAR gamma activation.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 12021175   Authors: Gerhold DL,Liu F,Jiang G,Li Z,Xu J,Lu M,Sachs JR,Bagchi A,Fridman A,Holder DJ,Doebber TW,Berger J,Elbrecht A,Moller DE,Zhang BB
Exact source Table 3: Clusters 1-18
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Source species Mus musculus
Contributed by John Newman (University of Washington)
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identifier namespace		 MOUSE_SEQ_ACCESSION
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Version history 3.1: First introduced

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