ck0106023 and Sarcoma-180

Kinesin spindle protein (KSP) inhibitors are a promising class of anticancer agents that cause mitotic arrest in cells from a failure to form functional bipolar mitotic spindles. Here, we report the design, synthesis and biological evaluation of a novel series of 1,4-dihydroquinolin-4-ones and 1,2,3,4-tetrahydroquinazolin-4-ones using de novo design method. The synthesized compound was evaluated and proved to have potent inhibitory activities in the KSP ATPase. Compounds 15j and 15p show potent inhibitory activities in cell proliferation assays. Preferred compound 15j markedly induced G2/M phase cell cycle arrest with characteristic monoastral spindles and subsequent cell death in A549 cells. In vivo evaluation of 15j on the growth of transplantable S180 sarcoma in mice suggested its therapeutic potential for further development.

Topics: Animals; Antineoplastic Agents; Cell Cycle; Cell Death; Cell Line, Tumor; Cell Proliferation; Dose-Response Relationship, Drug; Drug Design; Humans; Kinesins; Mice; Mice, Inbred ICR; Models, Molecular; Molecular Structure; Quinolones; Sarcoma 180; Stereoisomerism; Structure-Activity Relationship; Tetrahydronaphthalenes; Xenograft Model Antitumor Assays