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Aurora-PLK1 cascades as key signaling modules in the regulation of mitosis

Vladimir Joukov1, Arcangela De Nicolo2

  • 1N.N. Petrov National Medical Research Center of Oncology, Saint-Petersburg 197758, Russian Federation. vladijoukov@gmail.com.

Science Signaling
|August 16, 2018
PubMed

Insights

Aurora kinases and Polo-like kinase 1 (PLK1) form complexes with scaffold proteins to regulate mitosis. These interactions are crucial for cell division and spindle assembly, offering potential for new cancer drug development.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Mitosis regulation relies on reversible protein phosphorylation by kinases and phosphatases.
  • Key mitotic kinases include cyclin B-CDK1, Aurora kinases, and Polo-like kinase 1 (PLK1).
  • Understanding these kinase networks is vital for deciphering cell division mechanisms.

Purpose of the Study:

  • To review evidence on Aurora kinase complexes with scaffold proteins (Bora, CEP192, INCENP, TPX2) in vertebrates.
  • To analyze Aurora-PLK1 signaling cascades in mitosis and cell cycle regulation.
  • To explore implications for antimitotic drug development.

Main Methods:

  • Literature review of collected evidence on Aurora kinase complexes and signaling pathways.
  • Comparative analysis of Aurora activation mechanisms across different spindle assembly pathways.
  • Functional analogy exploration between specific protein complexes.

Main Results:

  • Aurora kinases function as catalytic subunits in complexes with four core scaffold proteins.
  • Aurora-PLK1 cascades orchestrated by Bora, CEP192, and INCENP control mitosis and spindle assembly.
  • Functional parallels exist between the CEP192 complex and the chromosomal passenger complex.

Conclusions:

  • Aurora kinase complexes with scaffold proteins are central to mitotic regulation in vertebrates.
  • Aurora-PLK1 signaling pathways are critical for cell cycle progression and DNA damage response.
  • Insights into these mechanisms may facilitate the development of novel antimitotic therapies.

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