Targeting the PI3K/Akt/mTOR pathway in castration-resistant prostate cancer

Endocr Relat Cancer. 2013 May 20;20(3):R83-99. doi: 10.1530/ERC-12-0394. Print 2013 Jun.


The phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathway is a key signaling pathway that has been linked to both tumorigenesis and resistance to therapy in prostate cancer and other solid tumors. Given the significance of the PI3K/Akt/mTOR pathway in integrating cell survival signals and the high prevalence of activating PI3K/Akt/mTOR pathway alterations in prostate cancer, inhibitors of this pathway have great potential for clinical benefit. Here, we review the role of the PI3K/Akt/mTOR pathway in prostate cancer and discuss the potential use of pathway inhibitors as single agents or in combination in the evolving treatment landscape of castration-resistant prostate cancer.

Keywords: Akt; PI3K inhibitors; PI3K pathway; androgen receptor signaling; castration-resistant prostate cancer (CRPC); combination therapy; mTOR.

Publication types

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

MeSH terms

  • Animals
  • Antineoplastic Agents / administration & dosage
  • Humans
  • Male
  • Phosphatidylinositol 3-Kinase / metabolism*
  • Prostatic Neoplasms, Castration-Resistant / drug therapy
  • Prostatic Neoplasms, Castration-Resistant / metabolism*
  • Proto-Oncogene Proteins c-akt / metabolism*
  • Signal Transduction / drug effects
  • TOR Serine-Threonine Kinases / metabolism*


  • Antineoplastic Agents
  • MTOR protein, human
  • TOR Serine-Threonine Kinases
  • Phosphatidylinositol 3-Kinase
  • Proto-Oncogene Proteins c-akt