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Updated: Jun 16, 2026

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
Published on: March 6, 2018
Partners in crime: deregulation of AR activity and androgen synthesis in prostate cancer
Karen E Knudsen1, Trevor M Penning
1Kimmel Cancer Center, Department of Cancer Biology and Department of Urology, Thomas Jefferson University, Philadelphia, PA 19107, USA. karen.knudsen@kimmelcancercenter.org
Abstract:
Prostate cancer remains a leading cause of cancer death, as there are no durable means to treat advanced disease. Treatment of non-organ-confined prostate cancer hinges on its androgen dependence. First-line therapeutic strategies suppress androgen receptor (AR) activity, via androgen ablation and direct AR antagonists, whereas initially effective, incurable, 'castration-resistant' tumors arise as a result of resurgent AR activity. Alterations of AR and/or associated regulatory networks are known to restore receptor activity and support resultant therapy-resistant tumor progression. However, recent evidence also reveals an unexpected contribution of the AR ligand, indicating that alterations in pathways controlling androgen synthesis support castration-resistant AR activity. In this report, the mechanisms underlying the lethal pairing of AR deregulation and aberrant androgen synthesis in prostate cancer progression will be discussed.
Insights
Prostate cancer treatment faces challenges with advanced disease. This study explores how androgen receptor (AR) deregulation and altered androgen synthesis drive castration-resistant prostate cancer progression.
Area of Science:
- Oncology
- Endocrinology
- Molecular Biology
Background:
- Prostate cancer is a major cause of cancer mortality, with limited treatment options for advanced stages.
- Current treatments target androgen receptor (AR) activity, but castration-resistant tumors eventually emerge.
- Emerging evidence suggests that altered androgen synthesis pathways contribute to treatment resistance.
Purpose of the Study:
- To discuss the mechanisms linking AR deregulation and aberrant androgen synthesis in prostate cancer.
- To elucidate how these factors contribute to the progression of castration-resistant prostate cancer.
- To provide insights into potential therapeutic targets for advanced prostate cancer.
Main Methods:
- Review of current literature on prostate cancer progression.
- Analysis of molecular mechanisms underlying AR activity and androgen synthesis.
- Discussion of the interplay between AR signaling and androgen production pathways.
Main Results:
- AR deregulation is a known driver of therapy resistance in prostate cancer.
- Aberrant androgen synthesis pathways unexpectedly support AR activity in castration-resistant tumors.
- The combination of AR deregulation and altered androgen synthesis promotes lethal prostate cancer progression.
Conclusions:
- Understanding the dual role of AR deregulation and androgen synthesis is crucial for treating advanced prostate cancer.
- Targeting both AR signaling and androgen production pathways may offer new therapeutic strategies.
- Further research into these mechanisms is needed to develop durable treatments for prostate cancer.
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