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Updated: Nov 15, 2025

Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients
Published on: November 19, 2019
Non-Coding RNAs Set a New Phenotypic Frontier in Prostate Cancer Metastasis and Resistance
Joshua Altschuler1, Jennifer A Stockert1, Natasha Kyprianou1,2
1Department of Urology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
Abstract:
Prostate cancer (PCa) mortality remains a significant public health problem, as advanced disease has poor survivability due to the development of resistance in response to both standard and novel therapeutic interventions. Therapeutic resistance is a multifaceted problem involving the interplay of a number of biological mechanisms including genetic, signaling, and phenotypic alterations, compounded by the contributions of a tumor microenvironment that supports tumor growth, invasiveness, and metastasis. The androgen receptor (AR) is a primary regulator of prostate cell growth, response and maintenance, and the target of most standard PCa therapies designed to inhibit AR from interacting with androgens, its native ligands. As such, AR remains the main driver of therapeutic response in patients with metastatic castration-resistant prostate cancer (mCRPC). While androgen deprivation therapy (ADT), in combination with microtubule-targeting taxane chemotherapy, offers survival benefits in patients with mCRPC, therapeutic resistance invariably develops, leading to lethal disease. Understanding the mechanisms underlying resistance is critical to improving therapeutic outcomes and also to the development of biomarker signatures of predictive value. The interconversions between epithelial-to-mesenchymal transition (EMT) and mesenchymal-to-epithelial transition (MET) navigate the prostate tumor therapeutic response, and provide a novel targeting platform in overcoming therapeutic resistance. Both microRNA (miRNA)- and long non-coding RNA (lncRNA)-mediated mechanisms have been associated with epigenetic changes in prostate cancer. This review discusses the current evidence-based knowledge of the role of the phenotypic transitions and novel molecular determinants (non-coding RNAs) as contributors to the emergence of therapeutic resistance and metastasis and their integrated predictive value in prostate cancer progression to advanced disease.
Insights
Prostate cancer (PCa) mortality is high due to treatment resistance. Understanding phenotypic transitions and non-coding RNAs (ncRNAs) like microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) is key to overcoming resistance and improving outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Prostate cancer (PCa) mortality is a significant public health issue, particularly in advanced stages where therapeutic resistance is common.
- The androgen receptor (AR) is central to PCa growth and the target of current therapies, but resistance invariably develops.
- Therapeutic resistance involves complex biological mechanisms, including genetic, signaling, and phenotypic alterations, influenced by the tumor microenvironment.
Purpose of the Study:
- To review current knowledge on phenotypic transitions (EMT/MET) and non-coding RNAs (ncRNAs) in PCa therapeutic resistance.
- To explore the role of miRNAs and lncRNAs in epigenetic changes driving PCa progression.
- To discuss the predictive value of these molecular determinants in advanced PCa.
Main Methods:
- Literature review of evidence-based knowledge on PCa therapeutic resistance.
- Analysis of the role of epithelial-to-mesenchymal transition (EMT) and mesenchymal-to-epithelial transition (MET) in treatment response.
- Examination of microRNA (miRNA) and long non-coding RNA (lncRNA) mechanisms in PCa.
Main Results:
- Phenotypic transitions (EMT/MET) are critical in navigating PCa therapeutic response and resistance.
- Non-coding RNAs, including miRNAs and lncRNAs, are implicated in epigenetic alterations contributing to resistance.
- These molecular factors offer potential as biomarkers for predicting PCa progression and resistance.
Conclusions:
- Understanding phenotypic plasticity and ncRNAs is crucial for developing strategies to overcome therapeutic resistance in PCa.
- miRNAs and lncRNAs represent promising targets and predictive biomarkers for advanced prostate cancer.
- Integrated analysis of these factors may improve patient outcomes and survival in metastatic castration-resistant prostate cancer (mCRPC).
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