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Antisense CCAAT/enhancer-binding protein RNA suppresses coordinate gene expression and triglyceride accumulation during differentiation of 3T3-L1 preadipocytes

Antisense CCAAT/enhancer-binding protein RNA suppresses coordinate gene expression and triglyceride accumulation during differentiation of 3T3-L1 preadipocytes

Genes and Development 6(4): 533-544

Previous studies suggest that the CCAAT/enhancer-binding protein (C/EBP) functions in the coordinate expression of adipocyte genes during differentiation of 3T3-L1 preadipocytes. We sought to block expression of C/EBP selectively using a bovine papilloma virus (BPV) vector to direct transcription of a approximately 0.4-kb segment of C/EBP cDNA (in antisense orientation) containing translated sequence 5' to that encoding the basic and leucine zipper regions of the protein. Vector-directed expression of antisense C/EBP RNA in 3T3-L1 preadipocytes inhibited expression of C/EBP mRNA and protein, as well as several adipose-specific mRNAs, and also prevented cytoplasmic triglyceride accumulation. Rescue of the "adipocyte phenotype" was accomplished by transfection of cells expressing antisense RNA with a modified BPV vector that directs transcription of the complementary sense C/EBP RNA.

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Accession: 039303839

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PMID: 1373117

DOI: 10.1101/gad.6.4.533

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