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M94A2280.TXT
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1994-10-25
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Document 2280
DOCN M94A2280
TI Sulfated colominic acid: an antiviral agent that inhibits the
infectivity of human immunodeficiency virus type I in vitro.
DT 9412
AU Yang D; Ohta Y; Yamaguchi S; Tsukada Y; Haraguchi Y; Liu HY; Amagai H;
Hoshino H; Department of Hygiene and Virology, Gunma University School
of; Medicine, Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):34 (abstract no. 111A). Unique
Identifier : AIDSLINE ICA10/94370295
AB OBJECTIVES: Colominic acids were sulfated under different conditions and
the antiviral activities against human immunodeficiency virus type 1
(HIV-1) were examined. MATERIALS AND METHODS: MT-4 cells were infected
with HIV-1 and expression of HIV-1-antigen was detected by IFA after 4
days of cultivation. Syncytium formation assay was used to examine
effects of compounds on early steps of HIV-1 infection. M8166 cells were
inoculated with HIV-1 [GUN-1] (an isolate obtained from a Japanese
hemophilia B patient with AIDS) in the presence of the compounds for 24
or 48 hrs and the number of syncytia formed was counted using a
microscope. HIV-1 production was measured by ELISA using p24 MoAb and
serum of an AIDS patient and by reverse transcriptase assay. APTT of
plasma was measured in the presence of the sulfated colominic acids by
using an automated machine. RESULTS: Sulfated colominic acids,
containing 6-11.8% sulfate, blocked the expression of HIV-1-antigens at
1.0 microgram/ml in MT-4 cells that had been infected with HTLV-IIIB.
These agents also completely blocked viral replication as assessed by
reverse transcriptase assay. The drugs inhibited syncytium formation
upon co-cultivation of MOLT-4 cells (clone 8) with MOLT-4/HTLV-IIIB
cells. The compounds abolished the production of HIV-1 p24 antigen in
culture medium of PBL. Sulfated colominic acids also inhibited infection
of M8166 cells with HIV-1 [GUN-1]. The compounds prolonged APTT at 100
micrograms/ml, but did not prolong at 10 micrograms/ml. Heparin and
dextran sulfate markedly prolonged APTT at 1 microgram/ml. CONCLUSIONS:
In these different assay systems, sulfated colominic acids displayed a
strong anti-HIV-1 activity in vitro. They did not damage the cells at a
concentration of 100 micrograms/ml, nor prolonged APTT at concentrations
of up to 10 micrograms/ml, suggesting that they may have little side
effect in vivo.
DE Antiviral Agents/*PHARMACOLOGY Cell Line Fluorescent Antibody
Technique Giant Cells/DRUG EFFECTS Human HIV Antigens/ISOLATION &
PURIF HIV-1/*DRUG EFFECTS Polysaccharides/*PHARMACOLOGY Sulfates
Virus Replication/DRUG EFFECTS MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).