Molecular biology of castration-resistant prostate cancer: basis for the novel therapeutic targets

Begoña Mellado1, Mercedes Marin Aguilera, Maria Veronica Pereira

  • 1Medical Oncology Department, ICMHO, Laboratory of Traslational Oncology, IDIBAPS, Hospital Clinic, Barcelona, Spain. bmellado@clinic.ub.es

Insights

Prostate cancer initially responds to androgen suppression therapy. However, castration-resistant prostate cancer (CRPC) develops due to androgen receptor (AR) signaling, leading to new therapeutic strategies targeting AR.

Area of Science:

  • Oncology
  • Molecular Biology
  • Endocrinology

Background:

  • Prostate cancer relies on androgen receptor (AR) signaling for survival.
  • Androgen suppression therapy is a primary treatment for metastatic prostate cancer.
  • Most patients develop resistance, progressing to castration-resistant prostate cancer (CRPC).

Purpose of the Study:

  • To review mechanisms of AR-driven resistance to androgen suppression in prostate cancer.
  • To explore how these resistance mechanisms inform new therapeutic strategies.
  • To highlight advancements in targeting AR signaling in CRPC.

Main Methods:

  • Literature review of studies on AR signaling in prostate cancer.
  • Analysis of elucidated mechanisms of androgen deprivation resistance.
  • Synthesis of information on novel agents targeting the AR pathway.

Main Results:

  • CRPC progression is frequently mediated by enhanced AR signaling.
  • Mechanisms include AR mutations, amplification, overexpression, intracrine androgen synthesis, cofactor changes, and cross-talk.
  • New hormonal therapies targeting AR signaling improve patient survival.

Conclusions:

  • Understanding AR signaling mechanisms is crucial for overcoming resistance in prostate cancer.
  • Targeting AR pathway alterations is key to developing effective CRPC treatments.
  • Novel therapeutic strategies are emerging to combat AR-driven resistance.

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