Cited by 90Microtubule and mitosis dynamicsHeat shock proteins researchGenomics and Chromatin Dynamics

Requirement of Hsp90 for centrosomal function reflects its regulation of Polo kinase stability

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de Cárcer, Guillermo, do Carmo Avides, Maria, Lallena, María José, Glover, David M., González, Cayetano·2001·The EMBO Journal

Abstract

We have previously shown that the molecular chaperone heat shock protein 90 (Hsp90) is required to ensure proper centrosome function in Drosophila and vertebrate cells. This observation led to the hypothesis that this chaperone could be required for the stability of one or more centrosomal proteins. We have found that one of these is Polo, a protein kinase known to regulate several aspects of cell division including centrosome maturation and function. Inhibition of Hsp90 results in the inactivation of Polo kinase activity. It also leads to a loss in the ability of cytoplasmic extracts to complement the failure of salt-stripped preparations of centrosomes to nucleate microtubules. This effect can be rescued upon addition of active recombinant POLO: We also show that Polo and Hsp90 are part of a complex and conclude that stabilization of Polo is one of the mechanisms by which Hsp90 contributes to the maintenance of functional centrosomes.

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  • Several key regulators of cell cycle progression have been implicated as Hsp90 interactors, including the mammalian tyrosine kinase Wee1 and its budding yeast homologue Swe1, the polo-like kinase Plk1 and its yeast homologue Cdc5, and the cyclin-dependent kinase Cdc2 and its budding yeast homologue Cdc28.

    “Several key regulators of cell cycle progression have been implicated as Hsp90 interactors, including the mammalian tyrosine kinase Wee1 and its budding yeast homologue Swe1, the polo-like kinase Plk1 and its yeast homologue Cdc5, and the cyclin-dependent kinase Cdc2 and its budding yeast homologue Cdc28 (Aligue et al., 1994; Munoz and Jimenez, 1999; de Carcer et al., 2001; Goes and Martin, 2001;”
  • Plk1, the mammalian homologue of Cdc5, is an Hsp90 client protein, and Cdc5 interacts with an Hsp90 cochaperone, Cdc37, in S. cerevisiae.

    “This is intriguing, as Plk1, the mammalian homologue of Cdc5, is an Hsp90 client protein, and Cdc5 interacts with an Hsp90 cochaperone, Cdc37, in S. cerevisiae (de Carcer et al., 2001; de Carcer, 2004; Mort-Bontemps-Soret et al., 2002).”

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Authors
de Cárcer, G., do Carmo Avides, M., Lallena, M. J., Glover, D. M., & González, C.
Affiliations
  • European Molecular Biology Laboratory (DE)
  • University of Cambridge (GB)
Corresponding author
González, Cayetano
Venue
The EMBO Journal
Published
2001-06-01
Volume
20
Issue
11
Pages
2878-2884
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2168824053
Cited by
90
References
54
Citations by year
2023: 1 · 2021: 2 · 2019: 5 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 2 · 2014: 4 · 2013: 2 · 2012: 2
FWCI
2.27
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
HSP90, Polo kinase, centrosome function, protein stability, molecular chaperones, centrosome maturation, microtubule nucleation, cell division regulation, kinase activity, protein complexes
MeSH terms
Animals, Cell Division, Cell Line, Drosophila melanogaster, Embryo, Nonmammalian, Genetic Complementation Test, Recombinant Proteins, Vertebrates, Protein Serine-Threonine Kinases, Centrosome, HSP90 Heat-Shock Proteins, Drosophila Proteins

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