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M9650551.TXT
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1996-03-09
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Document 0551
DOCN M9650551
TI Suppression of HIV replication in human monocyte-derived macrophages
induced by granulocyte/macrophage colony-stimulating factor.
DT 9605
AU Matsuda S; Akagawa K; Honda M; Yokota Y; Takebe Y; Takemori T; AIDS
Research Center, National Institute of Health, Tokyo, Japan.
SO AIDS Res Hum Retroviruses. 1995 Sep;11(9):1031-8. Unique Identifier :
AIDSLINE MED/96089210
AB Susceptibility to HIV infection was examined in macrophages
differentiated from human monocytes by macrophage colony-stimulating
factor (M-CSF) or granulocyte/macrophage colony-stimulating factor
(GM-CSF). The replication of macrophage-tropic human immunodeficiency
virus type-1 (HIV-1), which was determined by reverse transcriptase (RT)
activity, was significantly suppressed in macrophages induced by GM-CSF
(GM-type macrophages) but not in those induced by M-CSF (M-type
macrophages). Multinucleated giant cells were formed only in M-type
macrophages after HIV infection. However, the expression of CD4
molecules on the surface of both types of macrophages was similar and
the proviral DNA was detectable in cell lysates of both macrophages,
although the amount of proviral DNA in M-type macrophages was higher
than that in GM-type macrophages. Many steps have been defined in HIV
infection and replication, such as adsorption of HIV to the cell
surface, internalization of the viral core into the cytoplasm, uncoating
of viral RNA, reverse transcription and integration of proviral DNA into
cellular DNA, transcription and translation of proviral DNA, assembly of
viral components, and budding of virus particles. Our findings suggested
that the suppression of HIV-1 replication in macrophages induced by
GM-CSF is mainly due to a disturbance at certain steps of replication
after synthesis of the proviral DNA. Thus, the suppression of HIV
replication in GM-type macrophages may provide a model of the latency of
HIV infection in vivo.
DE Antigens, CD4/METABOLISM Antigens, Surface/METABOLISM Base Sequence
Cell Differentiation Cells, Cultured DNA Primers/GENETICS DNA,
Viral/GENETICS/METABOLISM Genes, gag Granulocyte-Macrophage
Colony-Stimulating Factor/*PHARMACOLOGY Human HIV Infections/PATHOLOGY
HIV-1/*DRUG EFFECTS/GENETICS/*PHYSIOLOGY Macrophage Colony-Stimulating
Factor/PHARMACOLOGY Macrophages/CYTOLOGY/*DRUG EFFECTS/*VIROLOGY
Microscopy, Electron Molecular Sequence Data Monocytes/CYTOLOGY/DRUG
EFFECTS Proviruses/DRUG EFFECTS/GENETICS/PHYSIOLOGY Support, Non-U.S.
Gov't Virus Replication/*DRUG EFFECTS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).