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Loss of CENP-F results in distinct microtubule-related defects without chromosomal abnormalities.

ABSTRACT: Microtubule (MT)-binding centromere protein F (CENP-F) was previously shown to play a role exclusively in chromosome segregation during cellular division. Many cell models of CENP-F depletion show a lag in the cell cycle and aneuploidy. Here, using our novel genetic deletion model, we show that CENP-F also regulates a broader range of cellular functions outside of cell division. We characterized CENP-F(+/+) and CENP-F(-/-) mouse embryonic fibroblasts (MEFs) and found drastic differences in multiple cellular functions during interphase, including cell migration, focal adhesion dynamics, and primary cilia formation. We discovered that CENP-F(-/-) MEFs have severely diminished MT dynamics, which underlies the phenotypes we describe. These data, combined with recent biochemical research demonstrating the strong binding of CENP-F to the MT network, support the conclusion that CENP-F is a powerful regulator of MT dynamics during interphase and affects heterogeneous cell functions.

SUBMITTER: Pfaltzgraff ER 

PROVIDER: S-EPMC4927273 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature

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Loss of CENP-F results in distinct microtubule-related defects without chromosomal abnormalities.

Pfaltzgraff Elise R ER   Roth Gretchen M GM   Miller Paul M PM   Gintzig Anneelizabeth G AG   Ohi Ryoma R   Bader David M DM  

Molecular biology of the cell 20160504 13

Microtubule (MT)-binding centromere protein F (CENP-F) was previously shown to play a role exclusively in chromosome segregation during cellular division. Many cell models of CENP-F depletion show a lag in the cell cycle and aneuploidy. Here, using our novel genetic deletion model, we show that CENP-F also regulates a broader range of cellular functions outside of cell division. We characterized CENP-F(+/+) and CENP-F(-/-) mouse embryonic fibroblasts (MEFs) and found drastic differences in multi  ...[more]

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