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Beschreibung

A cell-permeable tricyclic quinoline-acrylamide compound that potently inhibits BMX and BTK kinase activity (IC50 = 8 and 10.4 nM, respectively) by covalently targeting ATP-binding site cysteine, while being less potent against TEC family kinases TEC, JAK3, BLK with the same conserved cysteine (IC50 = 175, 377, and 653 nM, respectively). Only PI 3-Kgamma/PIK3CG, SBK1, PIP5K2C (by >=94% at 1 µ,M), and TXK (by 75% at 1 µ,M) are significantly inhibited by BMX-IN-1 in a selectivity profiling against 437 other kinase constructs. Potently inhibits the proliferation of TEL-BMX transformed Ba/F3 Ba/F3 (GI50 = 25 nM), while being much less effective against TEL-BLK, TEL-JAK1, TEL-JAK2, TEL-JAK3, or TEL-TYK2E957D transformed Ba/F3 (GI50 = >=3.64 µ,M) or a panel of 5 prostate cancer cell lines (GI50 >=2.46 µ,M)., A cell-permeable tricyclic quinoline-acrylamide compound that potently inhibits BMX and BTK kinase activity (IC50 = 8 and 10.4 nM, respectively) by covalently targeting ATP-binding site cysteine (Ser496 and S481 of respective human sequence), while being less potent against 3 other TEC family kinases with the same conserved cysteine (IC50 = 175, 377, and 653 nM against TEC, JAK3, and BLK, respectively) and completely ineffective toward BMX C496S even at concentrations as high as 10 µ,M. Only PI 3-Kgamma/PIK3CG, SBK1, and PIP5K2C are significantly inhibited by BMX-IN-1 (by >=94% at 1 µ,M) in a selectivity profiling against 437 other kinase constructs, including TEC family members EGFR/T790M, ITK (IC50 = 4.28 and 5.25 µ,M, respectively), TXK, ErbB2/Her2, ErbB4/Her4, JAK1, and JAK2 (75%, 10%, 22%, 13%, and 14% inhibition at 1 µ,M, respectively). Potently inhibits the proliferation of TEL-BMX transformed Ba/F3 Ba/F3 (GI50 = 25 nM), while being much less effective against TEL-BLK, TEL-JAK1, TEL-JAK2, TEL-JAK3, or TEL-TYK2E957D transformed Ba/F3 (GI50 = 3.64, 4.92, 5.83, 7.98, and 6.09 µ,M, respectively) or prostate cancer cells using a panel of 5 established lines (GI50 >=2.46 µ,M).