JCB logo
amgmicro.com
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

Published online 17 December 2001. doi:10.1083/jcb.200108051
This Article
Right arrow Full Text
Right arrow Full Text (PDF, 356K)
Right arrow PPT slides of all figures
Right arrow Supplemental Material Index
Right arrow Alert me when this article is cited
Right arrow Citation Map
Services
Right arrow Email this article
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new content in the JCB
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hannak, E.
Right arrow Articles by Oegema, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hannak, E.
Right arrow Articles by Oegema, K.
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Facebook   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

© The Rockefeller University Press, 0021-9525/2001/12/1109 $5.00
The Journal of Cell Biology, Volume 155, Number 7, December 24, 2001 1109-1116


Report

Aurora-A kinase is required for centrosome maturation in Caenorhabditis elegans



Eva Hannak1,2, Matthew Kirkham1, Anthony A. Hyman1 and Karen Oegema1,2

1 Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
2 European Molecular Biology Laboratory, 69117 Heidelberg, Germany

Address correspondence to Anthony A. Hyman, MPI for Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307 Dresden, Germany. Tel.: 49-351-210-1700. Fax: 49-351-210-1289. E-mail: hyman{at}mpi-cbg.de

Centrosomes mature as cells enter mitosis, accumulating {gamma}-tubulin and other pericentriolar material (PCM) components. This occurs concomitant with an increase in the number of centrosomally organized microtubules (MTs). Here, we use RNA-mediated interference (RNAi) to examine the role of the aurora-A kinase, AIR-1, during centrosome maturation in Caenorhabditis elegans. In air-1(RNAi) embryos, centrosomes separate normally, an event that occurs before maturation in C. elegans. After nuclear envelope breakdown, the separated centrosomes collapse together, and spindle assembly fails. In mitotic air-1(RNAi) embryos, centrosomal {alpha}-tubulin fluorescence intensity accumulates to only 40% of wild-type levels, suggesting a defect in the maturation process. Consistent with this hypothesis, we find that AIR-1 is required for the increase in centrosomal {gamma}-tubulin and two other PCM components, ZYG-9 and CeGrip, as embryos enter mitosis. Furthermore, the AIR-1–dependent increase in centrosomal {gamma}-tubulin does not require MTs. These results suggest that aurora-A kinases are required to execute a MT-independent pathway for the recruitment of PCM during centrosome maturation.

Key Words: microtubule; mitosis; cell cycle; cancer


Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Facebook Facebook   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?


This article has been cited by other articles:



  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents