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Spatiotemporal Analysis of Cytokinetic Events in Fission Yeast
11:19

Spatiotemporal Analysis of Cytokinetic Events in Fission Yeast

Published on: February 20, 2017

The spindle pole body plays a key role in controlling mitotic commitment in the fission yeast Schizosaccharomyces

Iain M Hagan1

  • 1CRUK (Cancer Research UK) Cell Division Laboratory, Paterson Institute for Cancer Research, University of Manchester, Wilmslow Road, Manchester M20 4BX, UK. ihagan@picr.man.ac.uk

Biochemical Society Transactions
|September 17, 2008
PubMed

Insights

Mitotic commitment relies on spindle pole control networks. The Cut12/Plo1 network links growth signals to MPF activation, regulating cell division timing.

Area of Science:

  • Cell biology
  • Molecular biology
  • Biochemistry

Background:

  • Mitosis commitment is regulated by the mitosis-promoting factor (MPF) kinase complex.
  • MPF activation involves a positive-feedback loop with Cdc25 phosphatase and Wee1 kinase.
  • Key kinases in this loop include MPF, Polo kinase, MAPK, and Greatwall kinase.

Purpose of the Study:

  • To review the role of the fission yeast spindle pole body component Cut12 in mitotic control.
  • To discuss the relationship between Cut12 and Polo kinase (Plo1) in regulating mitotic commitment.
  • To explore how the Cut12/Plo1 network integrates growth signaling pathways with MPF activation.

Main Methods:

  • Literature review focusing on fission yeast genetics and cell cycle regulation.
  • Analysis of signaling pathways including TOR and MAPK networks.
  • Examination of control networks on the spindle pole.

Main Results:

  • Cut12 plays a critical role in modulating mitotic commitment in fission yeast.
  • The Cut12/Plo1 control network is essential for coordinating mitotic entry.
  • This network links growth control signaling to MPF activation, influencing cell division timing.

Conclusions:

  • Mitotic commitment is orchestrated by spindle pole control networks.
  • The Cut12/Plo1 interaction is a key node in linking growth signals to cell cycle progression.
  • Understanding these networks is crucial for comprehending cell division regulation.

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