The convergence of DNA damage checkpoint pathways and androgen receptor signaling in prostate cancer
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Updated: Apr 26, 2026

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
Published on: March 6, 2018
1Department of MicrobiologyImmunology, and Cancer BiologyUVA Cancer CenterUniversity of Virginia, PO Box 800734, Charlottesville, Virginia 22908, USA.
Abstract:
It is increasingly clear that castration-resistant prostate cancer (PCa) is dependent on the androgen receptor (AR). This has led to the use of anti-androgen therapies that reduce endogenous steroid hormone production as well as the use of AR antagonists. However, the AR does not act in isolation and integrates with a milieu of cell-signaling proteins to affect cell biology. It is well established that cancer is a genetic disease resulting from the accumulation of mutations and chromosomal translocations that enables cancer cells to survive, proliferate, and disseminate. To maintain genomic integrity, there exists conserved checkpoint signaling pathways to facilitate cell cycle delay, DNA repair, and/or apoptosis in response to DNA damage. The AR interacts with, affects, and is affected by these DNA damage-response proteins. This review will focus on the connections between checkpoint signaling and the AR in PCa. We will describe what is known about how components of checkpoint signaling regulate AR activity and what questions still face the field.
Insights
Castration-resistant prostate cancer (PCa) relies on the androgen receptor (AR). DNA damage response pathways interact with AR signaling, influencing PCa progression and treatment strategies.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Prostate cancer (PCa) progression to castration-resistance is linked to androgen receptor (AR) signaling.
- Current therapies target AR signaling but do not fully account for its complex interactions.
- Cancer arises from genetic alterations, with DNA damage response (DDR) pathways crucial for maintaining genomic integrity.
Purpose of the Study:
- To review the intricate relationship between checkpoint signaling pathways and AR activity in prostate cancer.
- To elucidate how DDR proteins regulate AR function and vice versa.
- To identify current knowledge gaps and future research directions in this field.
Main Methods:
- Literature review focusing on the intersection of AR signaling and DNA damage response in PCa.
- Synthesis of existing research on how checkpoint signaling components influence AR.
- Analysis of the impact of AR on DNA damage response proteins.
Main Results:
- The androgen receptor (AR) is not an isolated entity but integrates with various cell-signaling proteins.
- Components of checkpoint signaling pathways interact with and affect AR activity.
- AR signaling pathways are influenced by DNA damage response proteins.
Conclusions:
- Understanding the interplay between checkpoint signaling and AR is critical for advancing castration-resistant prostate cancer treatment.
- Further research is needed to fully delineate these interactions and their therapeutic implications.
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