期刊
JOURNAL OF MEDICINAL CHEMISTRY
卷 48, 期 16, 页码 5215-5223出版社
AMER CHEMICAL SOC
DOI: 10.1021/jm050292k
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We have identified 5-(3-chlorothiophen-2-yl)-3-(4-trifluoromethylphenyl)-1,2,4-oxadiazole (1d) as a novel apoptosis inducer through our caspase- and cell-based high-throughput screening assay. Compound 1d has good activity against several breast and colorectal cancer cell lines but is inactive against several other cancer cell lines. In a flow cytometry assay, treatment of T47D cells with 1d resulted in arrest of cells in the G, phase, followed by induction of apoptosis. SAR studies of 1d showed that the 3-phenyl group can be replaced by a pyridyl group, and a substituted five-member ring in the 5-position is important for activity. 5-(3-Chlorothiophen-2-yl)-3-(5-chloropyridin-2-yl)-1,2,4-oxadiazole (41) has been found to have in vivo activity in a MX-1 tumor model. Using a photoaffinity agent, the molecular target has been identified as TIP47, an IGF II receptor binding protein. Therefore, our cell-based chemical genetics approach for the discovery of apoptosis inducers can identify potential anticancer agents as well as their molecular targets.
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