In vitro inhibition of HIV-1 by Met-SDF-1beta alone or in combination with antiretroviral drugs.

Abstract:

:Compounds that can block the CXCR4 chemokine receptor are a promising new class of antiretroviral agents. In these experiments we studied the effect of a modified form of the native stromal cell-derived factor-1 (SDF-1), Met-SDF-1beta. The in vitro susceptibility of two different CXCR4-tropic HIV-1 strains was determined. Antiviral effect was assessed by the reduction of p24 antigen production in PHA-stimulated peripheral blood mononuclear cells with exposure to the modified SDF-1 molecule. The 50% inhibitory concentrations (IC50) were derived from six separate experiments. The IC50 against the two HIV-1 isolates was in 1.0-2.8 microg/ml range for Met-SDF-1beta. Met-SDF-1beta showed synergy to additivity with either zidovudine or nelfinavir at IC75 IC90 and IC95. Additivity was seen when Met-SDF-1beta was combined with efavirenz. No cellular toxicity was observed at the highest concentrations when these agents were used either singly or in combination. This compound is a promising new candidate in a receptor-based approach to HIV-1 infection in conjunction with currently available combination antiretroviral drug therapies.

journal_name

Antivir Ther

journal_title

Antiviral therapy

authors

Rusconi S,Merrill DP,La Seta Catamancio S,Citterio P,Bulgheroni E,Croce F,Chou TC,Yang OO,Herrmann SH,Galli M,Hirsch MS

subject

Has Abstract

pub_date

2000-09-01 00:00:00

pages

199-204

issue

3

eissn

1359-6535

issn

2040-2058

journal_volume

5

pub_type

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