Abstract:
:This report examines the balance of positive and negative adipogenic factors in a line of immortalized 243 embryonic fibroblasts that undergo spontaneous preadipocyte differentiation. Control of adipogenesis reflects the interplay of factors that promote or inhibit expression of C/EBPalpha and PPARgamma. The 243 cells express C/EBPalpha early and at elevated levels compared to 3T3-F442A preadipocytes or adipocytes. Cell clones were derived from the heterogeneous 243 population for ability or inability to differentiate into adipocytes. Wnt10b, a secreted protein that inhibits adipogenesis, is expressed at high levels in cells with low adipogenic potential and is undetectable in preadipocytes that spontaneously differentiate. In contrast, C/EBPalpha is expressed at reduced levels in cells with low adipogenic potential, and is expressed at high levels in preadipocytes that spontaneously differentiate. These data are consistent with a model in which decreased Wnt10b, coupled with increased C/EBPalpha, results in induction of PPARgamma and spontaneous adipogenesis of 243 cells.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Bennett CN,Hodge CL,MacDougald OA,Schwartz Jdoi
10.1016/s0006-291x(03)00092-5subject
Has Abstractpub_date
2003-02-28 00:00:00pages
12-6issue
1eissn
0006-291Xissn
1090-2104pii
S0006291X03000925journal_volume
302pub_type
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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journal_title:Biochemical and biophysical research communications
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