Transcriptional profiling of transurethral resection samples provides insight into molecular mechanisms of hormone refractory prostate cancer
Related Experiment Video
Updated: Jul 13, 2026
Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients
Published on: November 19, 2019
O Stoss1, M Werther, D Zielinski
1TARGOS Molecular Pathology GmbH, Kassel, Germany. oliver.stoss@targos-gmbh.de
Abstract:
The molecular mechanisms for hormone-resistant prostate cancer progression still remain elusive, mainly due to the limited availability of corresponding tissue. As transurethral resection (TUR) is a common palliative therapy for patients with hormone refractory prostate cancer (HRPC) who have subvesical obstruction, we aimed to demonstrate that TUR samples can be used to identify significantly affected biological pathways during the switch to HRPC using oligonucleotide microarray analysis. Among the most significantly deregulated pathways in HRPC, we observed an induction of oxidative phosphorylation and a repression of cytoskeletal components.
Insights
Transurethral resection samples reveal key molecular changes in hormone-resistant prostate cancer. Key pathways affected include oxidative phosphorylation and cytoskeletal components during cancer progression.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Molecular mechanisms of hormone-resistant prostate cancer (HRPC) progression are not well understood.
- Limited availability of HRPC tissue hinders research.
- Transurethral resection (TUR) is a common palliative treatment for HRPC with subvesical obstruction.
Purpose of the Study:
- To investigate the utility of TUR samples for identifying biological pathways affected during the transition to HRPC.
- To analyze molecular changes associated with hormone resistance in prostate cancer.
Main Methods:
- Oligonucleotide microarray analysis was performed on TUR samples.
- Comparison of gene expression profiles between hormone-sensitive and hormone-resistant prostate cancer states.
Main Results:
- Significant deregulation of biological pathways was identified in HRPC samples.
- Observed an induction of oxidative phosphorylation pathways.
- Noted a repression of cytoskeletal component pathways.
Conclusions:
- TUR samples are a viable source for studying molecular mechanisms of HRPC.
- Oxidative phosphorylation and cytoskeletal regulation are significantly altered during prostate cancer hormone resistance.
