CCAAT/enhancer-binding protein-β participates in insulin-responsive expression of the factor VII gene

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Abstract

Expression of the human coagulation factor VII (FVII) gene by hepatoma cells was modulated in concert with levels of glucose and insulin in the culture medium. In low glucose medium without insulin, amounts of both FVII mRNA and secreted FVII protein were coordinately increased; in the presence of glucose with insulin, both were decreased. Analysis of the FVII promoter showed that these effects could be reproduced in a reportergene system, and a small promoter element immediately upstream of the translation start site of the gene, which mediated these effects, was identified. Mutation of this element largely abrogated the glucose/insulin-responsive change in expression of the reporter gene. Several members of the CCAAT/enhancer-binding protein family were found to be capable of binding the identified sequence element but not the mutated element. The expression of a FVII minigene directed by a segment of the native FVII promoter responded to co-expressed activating and inhibiting forms of CCAAT/enhancer-binding protein β.

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APA

Jackson, A. A., Cronin, K. R., Zachariah, R., & Carew, J. A. (2007). CCAAT/enhancer-binding protein-β participates in insulin-responsive expression of the factor VII gene. Journal of Biological Chemistry, 282(43), 31156–31165. https://doi.org/10.1074/jbc.M704694200

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