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A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
Published on: March 6, 2018
Emerging therapeutics targeting castration-resistant prostate cancer: the AR-mageddon of tumor epithelial-mesenchymal
Lauren N Hendrix1, David A Hamilton1, Natasha Kyprianou2,3,4
1a Division of Urology, University of Kentucky College of Medicine, Lexington, KY, USA.
Abstract:
Advanced prostate cancer will claim nearly 30,000 lives among men in the USA in the year 2013. Most of these will be castration-resistant prostate cancers that are not responsive to traditional therapeutic modalities, and there is no available regimen that fully eradicates metastatic disease. This poses a significant clinical challenge for practitioners and has stimulated the development of novel agents that target these castration-resistant tumor cells. Development of metastatic prostate cancer is orchestrated by multiple signaling pathways that regulate cell survival, apoptosis, anoikis, epithelial-mesenchymal transition (EMT), invasion, the androgen signaling axis and angiogenesis. Disruption of the mechanisms underlying these processes is critical for development of agents that can target otherwise resistant tumor cells. Insights into the mechanisms by which rounds of EMT/mesenchymal-epithelial transition conversions facilitate the progression of localized prostate carcinomas to advanced metastatic and castration-resistant disease emerge as attractive targets for drug development. In this review, the authors discuss the current understanding of therapeutic resistance in castration-resistant prostate cancer with focus on the androgen receptor signaling axis and EMT. Novel therapeutic approaches targeting critical players of both pathways as well as the results from ongoing clinical trials will be discussed in this review.
Insights
Advanced prostate cancer, particularly castration-resistant forms, poses a significant challenge. This review explores novel therapeutic strategies targeting the androgen receptor signaling axis and epithelial-mesenchymal transition (EMT) to combat metastatic disease.
Area of Science:
- Oncology
- Urology
- Cancer Biology
Background:
- Advanced prostate cancer, especially castration-resistant prostate cancer (CRPC), is a leading cause of cancer death in men.
- CRPC is characterized by resistance to traditional therapies and the inability to eradicate metastatic disease, presenting a major clinical challenge.
- Multiple signaling pathways, including androgen receptor signaling and epithelial-mesenchymal transition (EMT), drive the progression of metastatic prostate cancer.
Purpose of the Study:
- To review the current understanding of therapeutic resistance in castration-resistant prostate cancer.
- To focus on the roles of the androgen receptor signaling axis and EMT in CRPC progression and resistance.
- To discuss novel therapeutic approaches and ongoing clinical trials targeting these pathways.
Main Methods:
- Literature review of current research on castration-resistant prostate cancer.
- Analysis of signaling pathways involved in prostate cancer metastasis and therapeutic resistance.
- Discussion of novel therapeutic agents and clinical trial outcomes.
Main Results:
- Therapeutic resistance in CRPC is complex, involving dysregulation of key signaling pathways.
- The androgen receptor (AR) signaling axis remains central to CRPC, despite resistance mechanisms.
- Epithelial-mesenchymal transition (EMT) plays a critical role in the progression to advanced, metastatic, and castration-resistant disease.
Conclusions:
- Understanding the interplay between AR signaling and EMT is crucial for developing effective CRPC treatments.
- Novel therapeutic strategies targeting critical components of both AR signaling and EMT pathways show promise.
- Ongoing clinical trials are evaluating these novel approaches, offering hope for improved patient outcomes in advanced prostate cancer.
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