Targeting the cyclin-dependent kinase 5 in metastatic melanoma

Proc Natl Acad Sci U S A. 2020 Apr 7;117(14):8001-8012. doi: 10.1073/pnas.1912617117. Epub 2020 Mar 19.

Abstract

The cyclin-dependent kinase 5 (CDK5), originally described as a neuronal-specific kinase, is also frequently activated in human cancers. Using conditional CDK5 knockout mice and a mouse model of highly metastatic melanoma, we found that CDK5 is dispensable for the growth of primary tumors. However, we observed that ablation of CDK5 completely abrogated the metastasis, revealing that CDK5 is essential for the metastatic spread. In mouse and human melanoma cells CDK5 promotes cell invasiveness by directly phosphorylating an intermediate filament protein, vimentin, thereby inhibiting assembly of vimentin filaments. Chemical inhibition of CDK5 blocks the metastatic spread of patient-derived melanomas in patient-derived xenograft (PDX) mouse models. Hence, inhibition of CDK5 might represent a very potent therapeutic strategy to impede the metastatic dissemination of malignant cells.

Keywords: CDK5; cyclin-dependent kinases; metastasis; mouse cancer models.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Cell Line, Tumor
  • Cell Movement / drug effects
  • Cell Movement / genetics
  • Cyclin-Dependent Kinase 5 / antagonists & inhibitors
  • Cyclin-Dependent Kinase 5 / genetics
  • Cyclin-Dependent Kinase 5 / metabolism*
  • Female
  • Gene Dosage
  • Humans
  • Male
  • Melanoma / drug therapy
  • Melanoma / genetics
  • Melanoma / mortality
  • Melanoma / pathology*
  • Melanoma, Experimental / drug therapy
  • Melanoma, Experimental / genetics
  • Melanoma, Experimental / pathology*
  • Mice
  • Mice, Knockout
  • Phosphorylation / drug effects
  • Phosphorylation / genetics
  • Prognosis
  • Skin / pathology
  • Skin Neoplasms / drug therapy
  • Skin Neoplasms / genetics
  • Skin Neoplasms / mortality
  • Skin Neoplasms / pathology*
  • Vimentin / metabolism
  • Xenograft Model Antitumor Assays

Substances

  • VIM protein, human
  • Vim protein, mouse
  • Vimentin
  • Cyclin-Dependent Kinase 5
  • CDK5 protein, human
  • Cdk5 protein, mouse