Cancers (Oct 2022)

The Crucial Role of AR-V7 in Enzalutamide-Resistance of Castration-Resistant Prostate Cancer

  • Zeyuan Zheng,
  • Jinxin Li,
  • Yankuo Liu,
  • Zhiyuan Shi,
  • Zuodong Xuan,
  • Kunao Yang,
  • Chunlan Xu,
  • Yang Bai,
  • Meiling Fu,
  • Qiaohong Xiao,
  • Huimin Sun,
  • Chen Shao

DOI
https://doi.org/10.3390/cancers14194877
Journal volume & issue
Vol. 14, no. 19
p. 4877

Abstract

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Prostate cancer (PCa) has the second highest incidence of malignancies occurring in men worldwide. The first-line therapy of PCa is androgen deprivation therapy (ADT). Nonetheless, most patients progress to castration-resistant prostate cancer (CRPC) after being treated by ADT. As a second-generation androgen receptor (AR) antagonist, enzalutamide (ENZ) is the current mainstay of new endocrine therapies for CRPC in clinical use. However, almost all patients develop resistance during AR antagonist therapy due to various mechanisms. At present, ENZ resistance (ENZR) has become challenging in the clinical treatment of CRPC. AR splice variant 7 (AR-V7) refers to a ligand-independent and constitutively active variant of the AR and is considered a key driver of ENZR in CRPC. In this review, we summarize the mechanisms and biological behaviors of AR-V7 in ENZR of CRPC to contribute novel insights for CRPC therapy.

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