Related Experiment Video
Updated: Aug 30, 2026

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
Published on: March 6, 2018
Endothelin inhibition: novel therapy for prostate cancer
1Department of Urology, University of Pittsburgh School of Medicine, Pennsylvania 15232, USA. nelsonjb@msx.upmc.edu
Purpose:
Androgen refractory prostate cancer continues to evade effective treatment. The potent vasoconstrictor endothelin-1 is produced by prostate cancer and appears to have a role in prostate cancer progression and morbidity. Background on the endothelin axis (endothelin-1 and endothelin receptors ET(A) and ET(B)), preclinical studies of its role in prostate cancer, results of phases I and II clinical trials, and future directions are reviewed.
Materials And Methods:
A review was conducted of the published data on the endothelin axis in prostate cancer.
Results:
Based on preclinical and clinical trial data, the endothelin axis is emerging as potentially important in the biology of prostate cancer progression and morbidity. Drugs targeting the endothelin axis, such as the potent ET(A) receptor antagonist atrasentan (ABT-627), have been studied in large clinical trials and appear to have an impact on disease progression and morbidity.
Conclusions:
The role of the endothelin axis in prostate cancer deserves further investigation in the laboratory and clinic. This new strategy for intervention is promising.
Insights
The endothelin axis plays a role in advanced prostate cancer progression. Targeting this axis with drugs like atrasentan shows promise for improving outcomes in patients with androgen-refractory prostate cancer.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Androgen-refractory prostate cancer remains a significant therapeutic challenge.
- Endothelin-1, a vasoconstrictor produced by prostate cancer, is implicated in disease progression and morbidity.
- The endothelin axis, comprising endothelin-1 and its receptors ET(A) and ET(B), is a key focus.
Purpose of the Study:
- To review the role of the endothelin axis in prostate cancer.
- To summarize preclinical findings and clinical trial results.
- To discuss future research directions for endothelin-targeted therapies.
Main Methods:
- A comprehensive literature review was performed.
- Published data on the endothelin axis in prostate cancer was analyzed.
- Preclinical studies and clinical trial outcomes (Phases I and II) were examined.
Main Results:
- The endothelin axis is increasingly recognized for its importance in prostate cancer biology.
- Drugs targeting the endothelin axis, such as ET(A) receptor antagonist atrasentan, impact disease progression.
- Clinical trials indicate a potential benefit of endothelin axis inhibition on morbidity.
Conclusions:
- Further laboratory and clinical investigation into the endothelin axis in prostate cancer is warranted.
- Targeting the endothelin axis represents a promising new therapeutic strategy.
- This approach may offer a novel intervention for advanced prostate cancer.
Related Concept Videos
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme (ECE). Of...
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors
Antihypertensive Drugs: Angiotensin II Receptor Blockers
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...
