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Kinesin spindle protein inhibitors in cancer: a patent review (2008 – present)

, PhD & , PhD
Pages 1547-1560 | Published online: 26 Aug 2013
 

Abstract

Introduction: Inhibition of kinesin spindle protein (KSP) has emerged as a novel and validated therapeutic strategy against cancers. A lot of new KSP inhibitors have been identified in recent years and some of them have entered clinical trials. This may provide more selections in future cancer therapy.

Areas covered: In the present review, the authors will describe the most recent classes of KSP inhibitors by reviewing about 96 literatures in which 24 patent applications were included from 2008 to now.

Expert opinion: Many new KSP inhibitors have been discovered that act either by binding in an allosteric site of KSP or by ATP competitive inhibition. There are several ATP non-competitive KSP inhibitors entering clinical investigation. Although they were both well tolerated and showed acceptable pharmacokinetic profiles, limited clinical response was always the problem. Mutation of the binding pocket was also a hindrance in the development of these allosteric inhibitors. The appearance of ATP competitive KSP inhibitors was considered to be able to overcome mutation-mediated resistance to the allosteric inhibitors, which could be a new approach for the development of novel KSP inhibitors.

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