The role of the ubiquitination-proteasome pathway in breast cancer: ubiquitin mediated degradation of growth factor receptors in the pathogenesis and treatment of cancer

Breast Cancer Res. 2003;5(1):8-15. doi: 10.1186/bcr541. Epub 2002 Oct 7.


Aberrant activity of growth factor receptors has been implicated in the pathogenesis of a wide variety of malignancies. The negative regulation of signaling by growth factor receptors is mediated in large part by the ubiquitination, internalization, and degradation of the activated receptor. Over the past few years, considerable insight into the mechanisms that control receptor downregulation has been gained. There are also data suggesting that mutations that lead to inhibition of downregulation of growth factor receptors could play a role in the pathogenesis of cancer. Therapies directed at enhancing the degradation of growth factor receptors offer a promising approach to the treatment of malignancies.

Publication types

  • Review

MeSH terms

  • Breast Neoplasms / metabolism*
  • Breast Neoplasms / pathology
  • Cysteine Endopeptidases / metabolism*
  • Female
  • Humans
  • Multienzyme Complexes / metabolism*
  • Proteasome Endopeptidase Complex
  • Receptors, Growth Factor / metabolism
  • Signal Transduction / physiology*
  • Ubiquitin / metabolism*


  • Multienzyme Complexes
  • Receptors, Growth Factor
  • Ubiquitin
  • Cysteine Endopeptidases
  • Proteasome Endopeptidase Complex