Generation of ligand-based pharmacophore model and virtual screening for identification of novel tubulin inhibitors with potent anticancer activity.

Abstract:

:A pharmacophore model, Hypo1, was built on the basis of 21 training-set indole compounds with varying levels of antiproliferative activity. Hypo1 possessed important chemical features required for the inhibitors and demonstrated good predictive ability for biological activity, with high correlation coefficients of 0.96 and 0.89 for the training-set and test-set compounds, respectively. Further utilization of the Hypo1 pharmacophore model to screen chemical database in silico led to the identification of four compounds with antiproliferative activity. Among these four compounds, 43 showed potent antiproliferative activity against various cancer cell lines with the strongest inhibition on the proliferation of KB cells (IC(50) = 187 nM). Further biological characterization revealed that 43 effectively inhibited tubulin polymerization and significantly induced cell cycle arrest in G(2)-M phase. In addition, 43 also showed the in vivo-like anticancer effects. To our knowledge, 43 is the most potent antiproliferative compound with antitubulin activity discovered by computer-aided drug design. The chemical novelty of 43 and its anticancer activities make this compound worthy of further lead optimization.

journal_name

J Med Chem

authors

Chiang YK,Kuo CC,Wu YS,Chen CT,Coumar MS,Wu JS,Hsieh HP,Chang CY,Jseng HY,Wu MH,Leou JS,Song JS,Chang JY,Lyu PC,Chao YS,Wu SY

doi

10.1021/jm801649y

subject

Has Abstract

pub_date

2009-07-23 00:00:00

pages

4221-33

issue

14

eissn

0022-2623

issn

1520-4804

journal_volume

52

pub_type

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