Journal
CHEMISTRY & BIOLOGY
Volume 9, Issue 11, Pages 1219-1226Publisher
CELL PRESS
DOI: 10.1016/S1074-5521(02)00246-6
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Funding
- NCI NIH HHS [CA 78045] Funding Source: Medline
- NHLBI NIH HHS [HL 48728] Funding Source: Medline
- NIAMS NIH HHS [AR 27214] Funding Source: Medline
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Screening combinatorial libraries for inhibition of Paxillin binding to the cytoplasmic tail of the integrin alpha4 provided the first inhibitors of this protein-protein interaction implicated in enhanced rates of cell migration and chronic inflammation. The preparation of substructure analogs of the lead identified features required for activity, those available for modification, and those that may be removed. The most potent lead structure was shown to inhibit alpha(4)beta(1)-mediated human Jurkat T cell migration in a dose-dependent manner, validating the intracellular Paxillin/alpha4 interaction as a useful and unique target for therapeutic intervention. Moreover, the lead structure emerged from a library that was prepared in two formats: (1) a traditional small mixture format composed of 100 mixtures of 10 compounds and (2) a positional scanning library. Their parallel testing provided the rare opportunity to critically compare two approaches.
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