Regulation of phosphoinositide 3-kinase expression in health and disease

Trends Biochem Sci. 2009 Mar;34(3):115-27. doi: 10.1016/j.tibs.2009.01.003. Epub 2009 Mar 18.


Both the biology and the therapeutic potential of the phosphoinositide 3-kinase (PI3K) signalling axis have been the subject of intense investigation; however, little is known about the regulation of PI3K expression. Emerging evidence indicates that PI3K levels change in response to cellular stimulation with insulin and nuclear receptor ligands, and during various physiological and pathological processes including differentiation, regeneration, hypertension and cancer. Recently identified mechanisms that control PI3K production include increased gene copy number in cancer, and transcriptional regulation of the p110alpha PI3K gene by FOXO3a, NF-kappaB and p53, and of the PI3K regulatory subunits by STAT3, EBNA-2 and SREBP. In most instances, however, the impact of alterations in PI3K expression on PI3K signalling and disease remains to be established.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Gene Expression Regulation, Neoplastic / physiology*
  • Humans
  • Isoenzymes / chemistry
  • Isoenzymes / genetics
  • Isoenzymes / metabolism
  • Isoenzymes / physiology
  • Neoplasms / physiopathology*
  • Phosphatidylinositol 3-Kinases / chemistry
  • Phosphatidylinositol 3-Kinases / genetics
  • Phosphatidylinositol 3-Kinases / metabolism*
  • Protein Subunits / chemistry
  • Protein Subunits / genetics
  • Protein Subunits / metabolism
  • Protein Subunits / physiology
  • Signal Transduction / physiology


  • Isoenzymes
  • Protein Subunits
  • Phosphatidylinositol 3-Kinases