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1996-03-09
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Document 0237
DOCN M9650237
TI Inhibition of human immunodeficiency virus type 1 multiplication by
transforming growth factor beta 1 and AZT in HIV-1-infected myeloid
cells.
DT 9605
AU McKiel V; Gu Z; Wainberg MA; Hiscott J; Lady Davis Institute for Medical
Research, Jewish General; Hospital, Department of Microbiology and
Immunology, Montreal,; Quebec, Canada.
SO J Interferon Cytokine Res. 1995 Oct;15(10):849-55. Unique Identifier :
AIDSLINE MED/96122471
AB Myeloid cells are important reservoirs of HIV-1 infection. In response
to pathogenic agents, macrophages secrete inflammatory cytokines that
can modulate viral replication and contribute to AIDS pathogenesis.
Because HIV replication is dependent on cellular activation,
immunosuppressive cytokines that deactivate macrophages and T cells may
be important modulators of an antiviral effect. We tested the anti-HIV
potential of the immunosuppressive cytokine-transforming growth factor
beta (TGF-beta 1) alone and in combination with AZT in a new
monomyeloblastic model of HIV-1 infection. The PLB-985 cell model was
infected with HIV IIIB strain, and the course of HIV-1 infection and
replication was monitored by reverse transcriptase assay, p24
immunofluorescence, and northern blot analysis of HIV-1-specific mRNA.
TGF-beta 1 as a single agent had no effect on the multiplication of
HIV-IIIB in de novo-infected PLB 985 monomyeloblastic cells. However,
cotreatment with TGF-beta 1 and AZT synergistically slowed virus
multiplication within the first week following infection, as determined
by reverse transcriptase measurement, p24 antigen detection, and
northern blot analysis of viral RNA. The synergistic actions of TGF-beta
1 and AZT were also observed in PLB 985 cells infected with an
AZT-resistant strain of HIV-1 (HIV 1393). Synergism between nucleoside
analogs and cytokines may be an important therapeutic approach to HIV-1
infection. Elucidation of the role of cytokines in controlling the
degree of HIV multiplication may have an impact on both clinical
treatments and understanding the progression to AIDS.
DE Acquired Immunodeficiency Syndrome/*DRUG THERAPY/PATHOLOGY Antiviral
Agents/*PHARMACOLOGY Cell Line Drug Therapy, Combination Human
HIV-1/*GROWTH & DEVELOPMENT Immunosuppressive Agents/*PHARMACOLOGY
Leukemia, Myelomonocytic, Acute/PATHOLOGY Leukocytes, Mononuclear/DRUG
EFFECTS/VIROLOGY Support, Non-U.S. Gov't Transforming Growth Factor
beta/*PHARMACOLOGY Tumor Cells, Cultured Zidovudine/*PHARMACOLOGY
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).