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M9480474.TXT
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1994-08-20
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Document 0474
DOCN M9480474
TI Activation of human immunodeficiency virus 1 gene expression by the src
oncoprotein.
DT 9410
AU Dehbi M; Beaulieu S; Cohen EA; Bedard PA; Departement de Biochimie,
Universite de Montreal, Quebec,; Canada.
SO Oncogene. 1994 Aug;9(8):2399-403. Unique Identifier : AIDSLINE
MED/94309918
AB Several genes are induced constitutively in cells transformed by the
v-src oncoprotein. This induction is generally dependent on the
activation of transcription factors binding to src-responsive elements
of the promoter. In previous studies, we showed that the induction of
the CEF-4/9E3 cytokine gene by pp60v-src is dependent on the PRDII/kappa
B domain of the promoter (Dehbi et al., 1992). In this investigation, we
describe the activation of the HIV-1 LTR by pp60v-src and show that a
region of 30 bp containing the two NF-kappa B binding sites is critical
for activation of the promoter. The induction was dependent on
transformation since non-transforming forms of pp60v-src had little or
no effect on the promoter. The expression of proviral DNA and the
release of p24 antigen were also increased by v-src indicating that
viral replication was stimulated in src-transformed cells. The effect of
v-src on HIV-1 gene expression occurred in the presence or in the
absence of the tat viral trans-activator, in fibroblasts and in Jurkat T
lymphocytes. These results indicate that several promoters controlled by
PRDII/kappa B may be activated constitutively in v-src transformed cells
and suggest that oncogenic tyrosine kinases may play a role in the
induction of viruses with a PRDII/kappa B-controlled promoter.
DE Animal Base Sequence Chick Embryo *Gene Expression Regulation, Viral
HIV Long Terminal Repeat HIV-1/*GENETICS Molecular Sequence Data
NF-kappa B/PHYSIOLOGY Oncogene Protein pp60(v-src)/*PHYSIOLOGY
Promoter Regions (Genetics) Support, Non-U.S. Gov't TATA Box JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).