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Cytoskeleton (Hoboken). 2011 Feb;68(2):112-24. doi: 10.1002/cm.20498. Epub 2011 Jan 12.

A role for central spindle proteins in cilia structure and function.

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1
Section of Molecular Cell and Developmental Biology, University of Texas at Austin, Austin, Texas, USA.

Abstract

Cytokinesis and ciliogenesis are fundamental cellular processes that require strict coordination of microtubule organization and directed membrane trafficking. These processes have been intensely studied, but there has been little indication that regulatory machinery might be extensively shared between them. Here, we show that several central spindle/midbody proteins (PRC1, MKLP-1, INCENP, centriolin) also localize in specific patterns at the basal body complex in vertebrate ciliated epithelial cells. Moreover, bioinformatic comparisons of midbody and cilia proteomes reveal a highly significant degree of overlap. Finally, we used temperature-sensitive alleles of PRC1/spd-1 and MKLP-1/zen-4 in C. elegans to assess ciliary functions while bypassing these proteins' early role in cell division. These mutants displayed defects in both cilia function and cilia morphology. Together, these data suggest the conserved reuse of a surprisingly large number of proteins in the cytokinetic apparatus and in cilia.

PMID:
21246755
PMCID:
PMC4089984
DOI:
10.1002/cm.20498
[Indexed for MEDLINE]
Free PMC Article
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