Repression of insulin gene expression by adenovirus type 5 E1a proteins - PubMed (original) (raw)

Repression of insulin gene expression by adenovirus type 5 E1a proteins

R W Stein et al. Mol Cell Biol. 1987 Mar.

Abstract

Insulin gene transcription relies on enhancer and promoter elements which are active in pancreatic beta cells. We showed that adenovirus type 5 infection of HIT T-15 cells, a transformed hamster beta cell line, represses insulin gene transcription and mRNA levels. Using expression plasmids transiently introduced into HIT T-15 cells, we showed that adenovirus type 5 E1a transcription regulatory proteins repress insulin enhancer-promoter element activity as assayed with a surrogate xanthine-guanine phosphoribosyltransferase gene. We relate E1a repression of the insulin gene to other examples of repression of enhancer-dependent genes by E1a and discuss the possible relationship of this repression to insulin gene regulation.

PubMed Disclaimer

Similar articles

Cited by

References

    1. Cell. 1983 Nov;35(1):137-48 - PubMed
    1. Mol Cell Biol. 1986 Nov;6(11):4019-25 - PubMed
    1. Cell. 1983 Dec;35(3 Pt 2):693-9 - PubMed
    1. Proc Natl Acad Sci U S A. 1984 Jan;81(1):95-9 - PubMed
    1. Diabetes. 1984 Mar;33(3):297-300 - PubMed

Publication types

MeSH terms

Substances

LinkOut - more resources