LY2606368 is a potent and selective ATP competitive inhibitor(IC50=1.5nM in SW1990 cell) of the Chk1 protein kinase.
信号通路
Cell Cycle; DNA Damage
靶点
Chk1
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IC50
1.5nM
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体外研究
LY2606368 alone significantly inhibited the cell proliferation in a variety of pancreatic cell lines (SW1990, SU86.86, Bx-PC3, AsPC-1, CFPAC-1, Capan-2, HPAF-II) with SW1990 being the most sensitive (IC50=1.5nM). LY2606368 has been reported to inhibit Chk1 auto-phosphorylation activated by DNA damaging agents, and induce phosphorylation of H2AX, a DNA damage maker in multiple cancer cell lines in vitro. In addition, LY2606368 has demonstrated potent single agent activity and potentiates the anti-tumor activity of DNA damaging agents in vivo. Pancreatic cancer is one of the least curable cancers, with an approximate 5% overall 5-year survival for all patients. In SW1990 pancreas orthotopic model, which represents the local and metastatic growth pattern seen in pancreas cancer patients, LY2606368 treatment resulted in over 92% inhibition of primary tumor growth as well as 100% inhibition of metastasis to lymph node, spleen and intestine. The anti-tumor effect of LY2606368 treatment was further demonstrated in comparing with gemcitabine (the standard of care for pancreas cancer patient) in SW1990 orthotopic model.