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Updated: Apr 14, 2026

Kinase Inhibitor Screening In Self-assembled Human Protein Microarrays
Published on: October 23, 2019
ABL kinase inhibitory and antiproliferative activity of novel picolinamide based benzothiazoles
Ashraf Kareem El-Damasy1, Nam-Chul Cho2, Soon Bang Kang3
1Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangro 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea; Department of Biological Chemistry, Korea University of Science and Technology (UST), Gajungro 217, Youseong-gu, Daejeon 305-350, Republic of Korea.
Abstract:
A series of novel picolinamide based benzothiazoles (17 final compounds), targeting both wild-type and the most resistant T315I mutant of Bcr-Abl kinase, has been designed and synthesized. Moreover, a selected array (8 compounds) was evaluated for its antiproliferative activity over a panel of 60 cancer cell lines. Compound 5l was the most potent derivative against both native and T315I mutant ABL with IC50 values of 18.2 and 39.9nM, respectively, and showed highly selective inhibitory activity (89.8%) towards the Bcr-Abl dependent leukemia cell (K-562) at 10μM concentration. Significance of C6-oxypicolinamide moiety and SAR study for the C2 aliphatic side chain of benzothiazole are discussed in detail.
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