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RhoC GTPase Activation Assay
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Activin B and Activin C Have Opposing Effects on Prostate Cancer Progression and Cell Growth
Karen L Reader1, Simon John-McHaffie1, Sylvia Zellhuber-McMillan1
1Department of Pathology, University of Otago, Dunedin 9054, New Zealand.
Cancers
|January 8, 2023
Summary
Transforming growth factor-β (TGFB) family members, activin B and activin C, show potential as prognostic markers for aggressive prostate cancer. Their expression levels correlate with tumor grade, aiding in distinguishing aggressive from latent disease.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Current prostate cancer diagnostics struggle to differentiate aggressive from latent tumors.
- Transforming growth factor-β (TGFB) family members regulate prostate cell growth and are implicated in prostate cancer.
- Dysregulation of TGFB members is observed in prostate cancer, necessitating further investigation.
Purpose of the Study:
- To investigate the expression of TGFB family members in prostate tumor tissues.
- To determine the phenotypic effects of activins on prostate cell growth and migration.
Main Methods:
- Immunohistochemical staining of prostate adenocarcinoma and normal prostate tissue cores.
- Comparison of protein expression across different Gleason grades.
- In vitro studies assessing the impact of exogenous activins and activin overexpression on prostate cell lines (PNT1A and PC3).
Main Results:
- Activin B expression increased with higher Gleason patterns in prostate tumors.
- Activin B overexpression inhibited PNT1A cell growth but promoted PC3 cell growth and migration.
- Activin C expression decreased with higher Gleason grades.
- Activin C overexpression promoted PNT1A cell growth and inhibited PC3 cell growth.
Conclusions:
- Increased activin B and decreased activin C expression correlate with increasing prostate tumor grade.
- Activin B and activin C show potential as prognostic markers for aggressive prostate cancer.
- These findings may improve the ability to distinguish aggressive prostate cancer, aiding in treatment decisions.
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