Related Experiment Video
Updated: Jul 19, 2026

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
Published on: March 6, 2018
Hormone-refractory prostate cancer: new horizons
Abstract:
The eighth session of the 13th International Prostate Cancer Update focused on the mechanisms of androgen-independent cancer growth and on new therapeutic approaches to the treatment of androgen-independent prostate cancer. Three possible mechanisms that might account for the development of hormone resistance are reviewed here. These are: changes in antigen receptor expression, changes in androgen receptor structure, and changes in androgen receptor function. Therapeutic approaches discussed include the endothelin receptor antagonist astrasentan; PS-341, a boronic acid dipeptide that is highly selective for proteosome inhibition; the microtubule-stabilizing agent epothilone B; and exisulind, a selective apoptotic antineoplastic drug. The cooperative cancer study groups will move these treatments from their preliminary phase 1 and 2 studies to comparison against the standard of care for hormone-refractory prostate cancer.
Insights
Researchers reviewed mechanisms of androgen-independent prostate cancer growth and new therapies. Potential treatments include astrasentan, PS-341, epothilone B, and exisulind for hormone-refractory prostate cancer.
Area of Science:
- Oncology
- Urology
- Cancer Biology
Background:
- Androgen-independent prostate cancer (AIPC) poses a significant therapeutic challenge.
- Understanding mechanisms of hormone resistance is crucial for developing effective treatments.
- Current treatments for hormone-refractory prostate cancer have limitations.
Purpose of the Study:
- To review mechanisms underlying androgen-independent prostate cancer growth.
- To discuss novel therapeutic strategies for managing hormone-refractory prostate cancer.
- To highlight the progression of promising agents from early-phase trials.
Main Methods:
- Review of current literature on prostate cancer progression and treatment resistance.
- Discussion of three proposed mechanisms for hormone resistance: changes in androgen receptor expression, structure, and function.
- Overview of emerging therapeutic agents including astrasentan, PS-341, epothilone B, and exisulind.
Main Results:
- Identified key mechanisms contributing to hormone resistance in prostate cancer.
- Detailed the therapeutic potential of novel agents targeting specific pathways.
- Emphasized the transition of these agents into comparative clinical trials.
Conclusions:
- Multiple mechanisms contribute to the development of androgen-independent prostate cancer.
- Novel therapeutic agents show promise in preclinical and early clinical studies.
- Further clinical evaluation is warranted to establish the efficacy of these treatments against the standard of care for hormone-refractory prostate cancer.
Related Concept Videos
Treatment Resistant Cancers
Treatment Resistent Cancers
Targeted Cancer Therapies
There are several types of targeted therapies against specific...
Disorders of the Male Reproductive System
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...

