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1996-02-26
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Document 0581
DOCN M9620581
TI Viral activation from latency during retrodifferentiation of U937 cells
exposed to phorbol ester followed by infection with human
immunodeficiency virus type 1.
DT 9602
AU Okada Y; Kimura T; Kameoka M; Kishi M; Azuma I; Ikuta K; Institute of
Immunological Science, Hokkaido University, Sapporo,; Japan.
SO Immunopharmacology. 1995 Jun;30(1):27-39. Unique Identifier : AIDSLINE
MED/96078206
AB To determine the mechanism underlying the human immunodeficiency virus
type 1 (HIV-1) latency and its activation in monocyte/macrophage
lineage, the human promonocytic cell line U937 was infected with HIV-1
after differentiation with varied doses of phorbol 12-myristate
13-acetate (PMA). Variously differentiated intermediate stages were
generated in U937 cells in a dose-dependent manner. When these cells
were infected with lymphotropic HIV-1, the kinetics of the production of
HIV-1 DNA, the appearance of HIV-1 antigen-positive cells, and viral
production in the conditioned media were slower at higher doses of PMA.
This different susceptibility to the infection was not due to the rate
of HIV-1 adsorption. Viral replication from latency in the
differentiated cells was activated in proportion with the
retrodifferentiation observed in long-term cultures of the host cells.
Thus, our data demonstrate the close correlation between the regulation
of HIV-1 replication and the differentiation stage of
monocyte/macrophage lineage cells at the time of HIV-1 infection. The
retrodifferentiation phenomenon in infected cells seems to be
particularly important for understanding the mechanisms for HIV-1
activation from latency.
DE Antigens, CD4/DRUG EFFECTS Base Sequence Cell Differentiation/DRUG
EFFECTS/IMMUNOLOGY Dose-Response Relationship, Drug Human
HIV-1/*GROWTH & DEVELOPMENT/IMMUNOLOGY Immunity, Natural Leukemia,
Monocytic, Acute/IMMUNOLOGY/VIROLOGY Molecular Sequence Data
Monocytes/IMMUNOLOGY/VIROLOGY Support, Non-U.S. Gov't
Tetradecanoylphorbol Acetate/*PHARMACOLOGY Tumor Cells, Cultured Virus
Activation/DRUG EFFECTS/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).