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M9550193.TXT
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1995-03-04
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Document 0193
DOCN M9550193
TI L-2-oxothiazolidine-4-carboxylic acid (procysteine) inhibits expression
of the human immunodeficiency virus and expression of the interleukin-2
receptor alpha chain.
DT 9505
AU Lederman MM; Georges D; Dando S; Schmelzer R; Averill L; Goldberg D;
Department of Medicine, Case Western Reserve University School of;
Medicine, Cleveland, OH 44106-4984.
SO J Acquir Immune Defic Syndr Hum Retrovirol. 1995 Feb 1;8(2):107-15.
Unique Identifier : AIDSLINE MED/95135988
AB These studies were undertaken to examine the in vitro effects of the
cysteine pro-drug L-2-oxothiazolidine-4-carboxylic acid (Procysteine) on
human immunodeficiency virus expression. Procysteine inhibited HIV
expression in human peripheral blood mononuclear cells as detected by
measurement of supernatant core antigen. In transient transfection
assays, Procysteine inhibited gene expression controlled by the HIV-1
promoter in activated Jurkat cells but not in resting Jurkat cells.
Gel-shift assays showed that Procysteine inhibited NF-kappa B DNA
binding activity in nuclear extracts. Procysteine did not affect the
production of interleukin-2 by peripheral blood mononuclear cells of
healthy HIV-seronegative subjects, as measured by bioassay but it
decreased the density of cell-surface interleukin-2 receptors detected
by flow cytometry after stimulation with phytohemagglutinin (PHA). Thus,
Procysteine inhibits HIV expression, HIV promoter activity, and NF-kappa
B binding activity in vitro. Procysteine does not affect interleukin-2
production but inhibits interleukin-2 receptor expression in
PHA-stimulated peripheral blood mononuclear cells.
DE Cells, Cultured Dose-Response Relationship, Drug Gene Expression/DRUG
EFFECTS Human HIV Core Protein p24/ANALYSIS HIV Infections/*VIROLOGY
HIV-1/*DRUG EFFECTS/GROWTH & DEVELOPMENT/GENETICS
Interleukin-2/PHARMACOLOGY Leukocytes, Mononuclear/*VIROLOGY
Lymphocyte Transformation/DRUG EFFECTS NF-kappa B/METABOLISM
Phytohemagglutinins/PHARMACOLOGY Promoter Regions (Genetics) Protein
Binding Receptors, Interleukin-2/BIOSYNTHESIS/*DRUG EFFECTS Support,
Non-U.S. Gov't Support, U.S. Gov't, P.H.S. T-Lymphocytes/VIROLOGY
Thiazoles/*PHARMACOLOGY 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).