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M94A0727.TXT
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1994-10-21
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Document 0727
DOCN M94A0727
TI Induced expression of HIV-1 genomic RNA in latently infected cells
followed tat, but preceded rev, mRNA expression.
DT 9412
AU Peng H; Haase AT; National Centre for HIV Virology Research, Institute
of Medical; and Veterinary Science, Adelaide, South Australia.
SO Annu Conf Australas Soc HIV Med. 1993 Oct 28-30;5:109 (poster no. 68).
Unique Identifier : AIDSLINE ASHM5/94348928
AB The kinetics of individual viral RNA synthesis of HIV-1 regulatory and
structural genes in ACH2 cells after PMA induction were analysed at the
single cell level using in situ hybridisation with splice-junction
probes. Before PMA stimulation, only a small fraction (< 23%) of the
cells expressed tat, nef, env or gag/genomic RNA, no cells expressed
rev. One hour after induction, the percentage of tat, nef, env and
gag/genomic RNA expressing cells increased to 85%, 99%, 49% and 74%,
respectively, only 12% of the cells expressed rev mRNA. Seven hours
after induction, 96% of the cells expressed tat mRNA; 100% expressed env
and gag/genomic RNA; 38% expressed rev mRNA. Thereafter the expression
level of env and gag/genomic RNA, but not tat and rev mRNA, on
individual cells continued to increase. Our results showed that in the
PMA-ACH-2 system, induced expression of HIV-I env and gag/genomic RNA
followed the enhanced expression of tat and nef mRNA but preceded the
induced expression of rev mRNA.
DE Cell Line Gene Expression Regulation, Viral/PHYSIOLOGY Genes,
env/GENETICS Genes, gag/GENETICS Genes, rev/*GENETICS Genes,
tat/*GENETICS Human HIV-1/*GENETICS RNA, Messenger/*GENETICS RNA,
Viral/*GENETICS Virus Latency/*GENETICS MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).