The Discovery of PLK4 Inhibitors: (E)-3-((1H-Indazol-6-yl)methylene)indolin-2-ones as Novel Antiproliferative Agents
摘要:
The family of Polo-like kinases is important in the regulation of mitotic progression; this work keys on one member, namely Polo-like kinase 4 (PLK4). PLK4 has been identified as a candidate anticancer target which prompted a search for potent and selective inhibitors of PLK4. The body of the paper describes lead generation and optimization work which yielded nanomolar PLK4 inhibitors. Lead generation began with directed virtual screening, using a ligand-based focused library and a PLK4 homology model. Validated hits were used as starting points for the design and discovery of PLK4 inhibitors of novel structure, namely (E)-3-((1H-indazol-6-yl)methylene)indolin-2-ones. Computational models, based on a published X-ray structure (PLK4 kinase domain), were used to understand and optimize the in vitro activity of the series; potent antiproliferative activity was obtained. The kinase selectivity profile and cell cycle analysis of selected inhibitors are described. The results of a xenograft study with an optimized compound 50 (designated CFI-400437) support the potential of these novel PLK4 inhibitors for cancer therapy.
INDAZOLYL, BENZIMIDAZOLYL, BENZOTRIAZOLYL SUBSTITUTED INDOLINONE DERIVATIVES AS KINASE INHIBITORS USEFUL IN THE TREATMENT OF CANCER
申请人:Pauls Heinz W.
公开号:US20110065702A1
公开(公告)日:2011-03-17
The present invention is directed to a compound is represented by Structural Formula (A):or a pharmaceutically acceptable salt therof. The present invention is also directed to a pharmaceutical composition comprising a compound represented by Structural Formula (A) described above or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier or diluent. Also disclosed is a method of treating a subject having cancer, wherein the method comprises administering a therapeutically effective amount of a compound represented by Structural Formula (A) described above or a pharmaceutically acceptable salt thereof.
The Discovery of PLK4 Inhibitors: (<i>E</i>)-3-((1<i>H</i>-Indazol-6-yl)methylene)indolin-2-ones as Novel Antiproliferative Agents
作者:Radoslaw Laufer、Bryan Forrest、Sze-Wan Li、Yong Liu、Peter Sampson、Louise Edwards、Yunhui Lang、Donald E. Awrey、Guodong Mao、Olga Plotnikova、Genie Leung、Richard Hodgson、Irina Beletskaya、Jacqueline M. Mason、Xunyi Luo、Xin Wei、Yi Yao、Miklos Feher、Fuqiang Ban、Reza Kiarash、Erin Green、Tak W. Mak、Guohua Pan、Henry W. Pauls
DOI:10.1021/jm400380m
日期:2013.8.8
The family of Polo-like kinases is important in the regulation of mitotic progression; this work keys on one member, namely Polo-like kinase 4 (PLK4). PLK4 has been identified as a candidate anticancer target which prompted a search for potent and selective inhibitors of PLK4. The body of the paper describes lead generation and optimization work which yielded nanomolar PLK4 inhibitors. Lead generation began with directed virtual screening, using a ligand-based focused library and a PLK4 homology model. Validated hits were used as starting points for the design and discovery of PLK4 inhibitors of novel structure, namely (E)-3-((1H-indazol-6-yl)methylene)indolin-2-ones. Computational models, based on a published X-ray structure (PLK4 kinase domain), were used to understand and optimize the in vitro activity of the series; potent antiproliferative activity was obtained. The kinase selectivity profile and cell cycle analysis of selected inhibitors are described. The results of a xenograft study with an optimized compound 50 (designated CFI-400437) support the potential of these novel PLK4 inhibitors for cancer therapy.