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Updated: May 15, 2026

Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients
Published on: November 19, 2019
Interplay between genomic alterations and androgen receptor signaling during prostate cancer development and
Michael D Nyquist1, Scott M Dehm
1Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA.
Abstract:
Advanced prostate cancer (PCa) treated with androgen deprivation therapy (ADT) eventually relapses to an ADT-resistant disease referred to as castration-resistant PCa (CRPC). Recent integrative analyses of PCa genomes have led to the elucidation of potential subtypes that are revelatory to the development of PCa as well as the mechanisms of resistance to ADT and CRPC progression. These studies have confirmed that alterations in the androgen receptor (AR) signaling axis are central to CRPC progression, and have uncovered complex mechanisms by which AR and other components of the AR signaling axis affect, and are affected by, genomic changes and epigenetic transformations. Among the most frequent alterations in CRPC are direct alterations in the AR gene. These AR gene alterations include AR amplification, point mutations, and more recently AR gene rearrangements leading to expression of truncated, constitutively active AR splice variants that are impervious to ADT. In this review, we will highlight genomic alterations that are important for development and progression of PCa, with a focus on how these alterations affect, and are affected by, activity of the AR signaling axis.
Insights
Advanced prostate cancer (PCa) progresses to castration-resistant PCa (CRPC) despite androgen deprivation therapy (ADT). Genomic alterations, particularly in the androgen receptor (AR) gene, drive this resistance and CRPC progression.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Advanced prostate cancer (PCa) often becomes resistant to androgen deprivation therapy (ADT), progressing to castration-resistant PCa (CRPC).
- Understanding the genomic underpinnings of PCa development and ADT resistance is crucial for therapeutic advancement.
Purpose of the Study:
- To review key genomic alterations involved in prostate cancer (PCa) development and progression.
- To elucidate the role of these genomic changes in the development of castration-resistant prostate cancer (CRPC) and resistance to androgen deprivation therapy (ADT).
Main Methods:
- Integrative genomic analyses of PCa.
- Review of studies focusing on androgen receptor (AR) signaling axis alterations.
- Examination of AR gene alterations including amplification, mutations, and rearrangements.
Main Results:
- Alterations in the androgen receptor (AR) signaling axis are central to CRPC progression.
- Frequent AR gene alterations in CRPC include amplification, point mutations, and rearrangements.
- AR gene rearrangements can lead to constitutively active AR splice variants resistant to ADT.
Conclusions:
- Genomic alterations significantly impact PCa development and progression.
- Understanding AR signaling axis modifications is key to addressing ADT resistance in CRPC.
- Targeting AR pathway alterations may offer new therapeutic strategies for advanced prostate cancer.
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