Targeting the mitotic checkpoint for cancer therapy with NMS-P715, an inhibitor of MPS1 kinase
- Cancer Res. 2010 Dec 15;70(24):10255-64. doi: 10.1158/0008-5472.CAN-10-2101.
- 1. Department of Cell Biology-Oncology, Nerviano Medical Sciences, Viale Pasteur 10, Nerviano 20014, Italy. [email protected]
Mps1 kinase is a key regulator of the spindle assembly checkpoint (SAC), a mitotic mechanism specifically required for proper chromosomal alignment and segregation. It has been found aberrantly overexpressed in a wide range of human tumors and is necessary for tumoral cell proliferation. Here we report the identification and characterization of NMS-P715, a selective and orally bioavailable Mps1 small-molecule inhibitor, which selectively reduces Cancer cell proliferation, leaving normal cells almost unaffected. NMS-P715 accelerates Mitosis and affects kinetochore components localization causing massive aneuploidy and cell death in a variety of tumoral cell lines and inhibits tumor growth in preclinical Cancer models. Inhibiting the SAC could represent a promising new approach to selectively target Cancer cells.