Document Detail

Imaging-Based Assay for Identification and Characterization of Inhibitors of CXCR4-Tropic HIV-1 Envelope-Dependent Cell-Cell Fusion.
MedLine Citation:
PMID:  21474836     Owner:  NLM     Status:  Publisher    
Infection of certain cell types by HIV results in formation of syncytia. This process can be blocked by antibodies or compounds that prevent interaction of viral envelope protein with host cell receptors. Here the authors describe an automated imaging-based assay for inhibitors of cell-cell fusion mediated by interaction of HIV gp120 with CXCR4 coreceptor. The assay quantifies syncytia formation between U87MG astrocytoma cells constitutively expressing CD4/CXCR4 and morphologically distinct Jurkat T lymphoma cells inducibly expressing HIV env. Each cell type was differentially labeled with vital dyes. Fusion was quantified by measuring size, shape, and color of Jurkat cells and Jurkat-harboring cell syncytia. Dose-response experiments with reference inhibitors AMD 3100 and KRH-1636 yielded potencies consistent with those obtained using standard antiviral assays. This assay complements virus-based infectivity assays for identification of inhibitors of membrane fusion events triggered by interaction of HIV gp120 with host CXCR4.
Susanne Kramer; Peter Buontempo; Sony Agrawal; Robert Ralston
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-7
Journal Detail:
Title:  Journal of biomolecular screening : the official journal of the Society for Biomolecular Screening     Volume:  -     ISSN:  1552-454X     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9612112     Medline TA:  J Biomol Screen     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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