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Centrosome-associated NDR kinase regulates centrosome duplication

Hergovich, Alexander and Lamla, Stefan and Nigg, Erich A. and Hemmings, Brian A.. (2007) Centrosome-associated NDR kinase regulates centrosome duplication. Molecular cell, Vol. 25, H. 4. pp. 625-634.

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Official URL: http://edoc.unibas.ch/dok/A5249345

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Abstract

Human NDR kinases are upregulated in some cancer types, yet their functions still remain undefined. Here, we report the first known function of a mammalian NDR kinase by demonstrating that human NDR directly contributes to centrosome duplication. A subpopulation of endogenous NDR localizes to centrosomes in a cell-cycle-dependent manner. Overexpression of NDR resulted in centrosome overduplication in a kinase-activity-dependent manner, while expression of kinase-dead NDR or depletion of NDR by small interfering RNA (siRNA) negatively affected centrosome duplication. By targeting NDR to the centrosome, we show that the centrosomal pool of NDR is sufficient to generate supernumerary centrosomes. Furthermore, our data indicate that NDR-driven centrosome duplication requires Cdk2 activity and that Cdk2-induced centrosome amplification is affected upon reduction of NDR activity. Overall, considering that centrosome overduplication is linked to cellular transformation, our observations may also provide a molecular link between mammalian NDR kinases and cancer.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum
05 Faculty of Science > Departement Biozentrum > Former Organization Units Biozentrum > Cell Biology (Nigg)
UniBasel Contributors:Nigg, Erich A.
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Cell Press
ISSN:1097-2765
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:19
Deposited On:22 Mar 2012 13:16

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