Abstract
An imprinted gene, paternally expressed gene (peg) 10, was isolated as one of the genes expressed early in adipogenesis. The expression of peg10 was elevated after the addition of inducers, and was detected in adipocyte differentiable 3T3-L1 cells, but not observed in the non-adipogenic cell line NIH-3T3. Moreover, the knockdown of peg10 by RNA interference (RNAi) inhibited the differentiation of 3T3-L1 cells into lipid-laden adipocytes. Interestingly, peg10 RNAi-treatment reduced the expressions of C/EBPbeta and C/EBPdelta, and inhibited mitotic clonal expansion. These findings strongly indicate that peg10 plays a crucial role at the immediate early stage of adipocyte differentiation.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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3T3-L1 Cells
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Adipocytes / cytology*
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Adipocytes / metabolism*
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Animals
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Apoptosis Regulatory Proteins
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CCAAT-Enhancer-Binding Protein-beta / metabolism
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CCAAT-Enhancer-Binding Protein-delta / metabolism
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Cell Differentiation*
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Clone Cells
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DNA-Binding Proteins
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Gene Expression Profiling
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Gene Expression Regulation
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Genomic Imprinting / genetics*
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Mice
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Mitosis
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Nuclear Proteins / genetics*
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RNA Interference
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RNA, Messenger / genetics
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RNA, Messenger / metabolism
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RNA-Binding Proteins
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Time Factors
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Transcription Factors / genetics*
Substances
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Apoptosis Regulatory Proteins
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CCAAT-Enhancer-Binding Protein-beta
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DNA-Binding Proteins
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Nuclear Proteins
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Peg10 protein, mouse
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RNA, Messenger
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RNA-Binding Proteins
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Transcription Factors
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CCAAT-Enhancer-Binding Protein-delta