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Screening for inhibitors of microtubule-associated motor proteins.

Kozielski, F; DeBonis, S; Skoufias, DA; (2007) Screening for inhibitors of microtubule-associated motor proteins. Methods Mol Med , 137 pp. 189-207.

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Abstract

The mitotic spindle is an important target for cancer chemotherapy. The main protein target for drugs in clinical use is tubulin, the building block of microtubules. In recent years, other proteins of the mitotic spindle have been identified as potential targets for the development of more specific drugs with the hope that these will have fewer side effects than known antimitotics (taxanes, vinca alkaloids). The human genome contains more than 40 members of the kinesin superfamily, with at least 12 of these involved in mitosis and cytokinesis. HsEg5 (also called KSP, kinesin spindle protein), a member of the kinesin-5 family, involved in the formation of the bipolar spindle, is a very promising target for cancer chemotherapy with specific inhibitors in Phase I and II clinical trails. Several successful approaches exist today to screen Eg5 for inhibitors, including phenotype-based assays and simple in vitro assays that explore the intrinsic enzymatic ATPase activity of Eg5. Here, we describe a robust and straightforward in vitro method to rapidly screen Eg5 for inhibitors. The assay can easily be adapted to other mitotic kinesins that may be identified in the future as potential drug targets, or simply to obtain specific kinesin inhibitors for use in "chemical genetics" to study the function of this important class of proteins.

Type: Article
Title: Screening for inhibitors of microtubule-associated motor proteins.
Location: United States
Keywords: Adenosine Triphosphatases, Cells, Cultured, Drug Evaluation, Preclinical, Enzyme Activation, Enzyme Inhibitors, HeLa Cells, Humans, Kinesin, Microscopy, Fluorescence, Microtubule-Associated Proteins, Mitosis, Phenotype, Reproducibility of Results, Small Molecule Libraries
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > UCL School of Pharmacy
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > UCL School of Pharmacy > SoP Pharmaceutical and Bio Chemistry
URI: http://discovery.ucl.ac.uk/id/eprint/1427051
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