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M94A2503.TXT
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1994-10-25
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Document 2503
DOCN M94A2503
TI Cytokine(s) released by CD8+ T cells from HIV-seronegative individuals
suppressing in vitro HIV replication.
DT 9412
AU Tsuchie H; Tesfamariam N; Trickett A; Lam-Po-Tang PR; Dwyer JM; Ichimura
H; Kurimura T; Research Institute for Microbial Diseases, Osaka
University,; Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):29 (abstract no. 088A). Unique
Identifier : AIDSLINE ICA10/94370072
AB OBJECTIVE: To study the effect of CD8+ T lymphocytes from
HIV-seronegative individuals on in vitro HIV replication in naturally
infected CD4+ T cells. METHODS: By using immunomagnetic beads, CD4+ and
CD8+ T cells were positively selected from peripheral blood mononuclear
cells of HIV-seronegative or HIV-seropositive individuals. The CD4+ T
cells from HIV-seropositive individuals were mixed with CD8+ T cells
from HIV-seropositive or HIV-seronegative individuals at a ratio of 1:3
and cocultured with or without using a semipermeable membrane in
transwell devices. The culture supernatants were assayed for HIV-1 p24
antigen. RESULTS: When autologous CD8+ T cells were added to CD4+ T
cells from HIV-seropositive individuals, HIV-1 antigen production was
prevented, even if separated by the membrane. CD8+ T cells from most of
HIV-seronegative individuals suppressed HIV replication if cocultured.
In case of the separated coculture, CD8+ T cells from some of
HIV-seronegative individuals could prevented or sharply reduced the HIV
replication. CONCLUSION: CD8+ T cells from HIV-seronegative individuals
could release cytokine(s) suppressing in vitro HIV replication in
naturally infected CD4+ T cells.
DE *Antigens, CD8 Cells, Cultured Human HIV Core Protein
p24/BIOSYNTHESIS/ISOLATION & PURIF HIV Seronegativity/*IMMUNOLOGY
HIV-1/*IMMUNOLOGY T-Lymphocyte Subsets/*IMMUNOLOGY T4
Lymphocytes/MICROBIOLOGY *Virus Replication MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).