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Updated: Aug 9, 2026

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
Published on: March 6, 2018
Androgen receptor as a therapeutic target for androgen independent prostate cancer
Nima Sharifi1, William L Farrar
1Cytokine Molecular Mechanisms Section, Laboratory of Molecular Immunoregulation, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA. nima.sharifi@nih.gov
Abstract:
Prostate cancer is the leading cause of nonskin malignancy and the second leading cause of cancer death in men. Androgen deprivation therapy is the first-line of systemic therapy against advanced prostate cancer. All advanced prostate cancers eventually grow despite castrate levels of testosterone. We review the evidence that androgen independent prostate cancer continues to require androgen receptor activity for growth, the mechanisms of androgen receptor activation in the castrate setting, and possible points of intervention for novel therapies targeting the androgen receptor and prostate cancer.
Insights
Advanced prostate cancer remains dependent on androgen receptor activity for growth, even at low testosterone levels. This review explores mechanisms of androgen receptor activation and potential therapeutic targets for novel prostate cancer treatments.
Area of Science:
- Oncology
- Urology
- Endocrinology
Background:
- Prostate cancer is a leading cause of cancer death in men.
- Androgen deprivation therapy (ADT) is the primary treatment for advanced prostate cancer.
- Cancers often develop resistance to ADT, progressing despite low testosterone levels.
Purpose of the Study:
- To review evidence supporting continued androgen receptor (AR) dependence in castration-resistant prostate cancer (CRPC).
- To explore mechanisms of AR activation in the absence of high androgen levels.
- To identify potential therapeutic targets for novel treatments against advanced prostate cancer.
Main Methods:
- Literature review of studies on prostate cancer progression and androgen receptor signaling.
- Analysis of mechanisms driving AR activity in castration-resistant states.
- Identification of therapeutic strategies targeting the AR pathway.
Main Results:
- Evidence indicates that CRPC cells maintain AR activity for growth and survival.
- Mechanisms include AR gene amplification, mutations, and alternative signaling pathways.
- The AR pathway remains a viable target for therapeutic intervention in advanced prostate cancer.
Conclusions:
- Androgen receptor signaling is crucial for the growth of advanced prostate cancer, even under castrate conditions.
- Understanding AR activation mechanisms in CRPC is key to developing effective therapies.
- Targeting the AR pathway offers promising avenues for novel prostate cancer treatments.
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