p27 as Jekyll and Hyde

Regulation of cell cycle and cell motility

Michelle D. Larrea, Seth A. Wander, Joyce M Slingerland

Research output: Contribution to journalArticle

93 Citations (Scopus)

Abstract

p27 is a key regulator of cell proliferation. While it opposes cell cycle progression by binding to and inhibiting cyclin E-Cdk2, T157/T198 phosphorylation of p27 promotes its assembly of D-type cyclin-CDKs. In addition to its actions on the cell cycle, p27 regulates CDK-independent cytoplasmic functions. In human cancers, oncogenic activation of the PI3K signaling pathway often results in cytoplasmic mislocalization of p27. Cytoplasmic p27 plays an important role in cell motility and migration; it binds RhoA and modulates activation of the RhoA/ROCK cascade. p27:RhoA binding is facilitated by p27 phosphorylation at threonine 198. Accumulation of cytoplasmic p27 leads to increased cellular motility, a critical event in tumor metastasis. Further characterization of post-translational modifications governing p27 localization and its action on RhoA and the actin cytoskeleton may provide critical insights into human cancer metastasis.

Original languageEnglish
Pages (from-to)3455-3461
Number of pages7
JournalCell Cycle
Volume8
Issue number21
StatePublished - Nov 1 2009

Fingerprint

Cell Movement
Cell Cycle
Phosphorylation
Neoplasm Metastasis
Cyclin D
Cyclin E
Neoplasms
Threonine
Post Translational Protein Processing
Actin Cytoskeleton
Phosphatidylinositol 3-Kinases
Cell Proliferation

Keywords

  • CDK inhibition
  • Cell cycle
  • Cell motility
  • Metastasis
  • mTOR
  • p27
  • Phosphorylation
  • PI3K
  • PKB
  • RhoA
  • RSK
  • SGK

ASJC Scopus subject areas

  • Cell Biology
  • Molecular Biology
  • Developmental Biology

Cite this

p27 as Jekyll and Hyde : Regulation of cell cycle and cell motility. / Larrea, Michelle D.; Wander, Seth A.; Slingerland, Joyce M.

In: Cell Cycle, Vol. 8, No. 21, 01.11.2009, p. 3455-3461.

Research output: Contribution to journalArticle

Larrea, MD, Wander, SA & Slingerland, JM 2009, 'p27 as Jekyll and Hyde: Regulation of cell cycle and cell motility', Cell Cycle, vol. 8, no. 21, pp. 3455-3461.
Larrea, Michelle D. ; Wander, Seth A. ; Slingerland, Joyce M. / p27 as Jekyll and Hyde : Regulation of cell cycle and cell motility. In: Cell Cycle. 2009 ; Vol. 8, No. 21. pp. 3455-3461.
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