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Updated: Jan 19, 2026

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
Published on: March 6, 2018
Molecular determinants of response to high-dose androgen therapy in prostate cancer
Michael D Nyquist1, Alexandra Corella1, Osama Mohamad2
1Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.
Abstract:
Clinical trials of high-dose androgen (HDA) therapy for prostate cancer (PC) have shown promising efficacy but are limited by lack of criteria to identify likely responders. To elucidate factors that govern the growth-repressive effects of HDAs, we applied an unbiased integrative approach using genetic screens and transcriptional profiling of PC cells with or without demonstrated phenotypic sensitivity to androgen-mediated growth repression. Through this comprehensive analysis, we identified genetic events and related signaling networks that determine the response to both HDA and androgen withdrawal. We applied these findings to develop a gene signature that may serve as an early indicator of treatment response and identify men with tumors that are amenable to HDA therapy.
Insights
High-dose androgen therapy shows promise for prostate cancer (PC), but identifying responders is challenging. This study reveals genetic factors predicting response to androgen therapy, aiding in selecting suitable patients.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- High-dose androgen (HDA) therapy demonstrates efficacy in prostate cancer (PC) treatment.
- A significant limitation is the absence of reliable criteria to predict patient response to HDA therapy.
Purpose of the Study:
- To identify genetic factors and signaling pathways influencing PC cell sensitivity to HDA therapy.
- To develop a predictive tool for HDA therapy response in prostate cancer patients.
Main Methods:
- Utilized unbiased genetic screens and transcriptional profiling of PC cells.
- Analyzed cells with varying sensitivity to androgen-mediated growth repression.
Main Results:
- Identified specific genetic events and signaling networks crucial for HDA therapy response.
- Discovered factors that dictate sensitivity to both HDA and androgen withdrawal.
Conclusions:
- Developed a gene signature for early prediction of HDA therapy response.
- This signature can help identify prostate cancer patients likely to benefit from HDA therapy.
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