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Defining cellular population dynamics at single-cell resolution during prostate cancer progression
Alexandre A Germanos1,2, Sonali Arora1, Ye Zheng3
1Division of Human Biology, Fred Hutchinson Cancer Center, Seattle, United States.
Elife
|December 13, 2022
Summary
Advanced prostate cancer involves castration-resistant luminal cells driving progression. Inhibiting translation offers a potential therapeutic strategy against these aggressive tumors.
Area of Science:
- Oncology
- Cell Biology
- Cancer Research
Background:
- Advanced prostate cancer is a major cause of male cancer deaths.
- Understanding cellular drivers of prostate cancer progression is incomplete.
- Castration resistance and tumor microenvironment are key to advanced disease.
Purpose of the Study:
- Investigate prostate cancer cell dynamics from onset to androgen independence.
- Identify cellular mechanisms driving treatment resistance and disease progression.
- Explore therapeutic vulnerabilities in advanced prostate cancer.
Main Methods:
- Utilized an in vivo murine model of prostate cancer.
- Analyzed cellular dynamics at single-cell resolution.
- Correlated findings with human patient data.
Main Results:
- Observed expansion of castration-resistant intermediate luminal cells linked to poor prognosis.
- Identified a pro-tumorigenic microenvironment created by epithelial cells and fibroblasts.
- Discovered androgen-independent prostate cancer diversifies intermediate luminal cells.
- Found distinct epithelial populations sensitive to translation inhibition.
Conclusions:
- Castration-resistant luminal cells and immunosuppressive infiltrates dominate the tumor environment.
- Translation inhibition induces epithelial cell death and reduces tumor heterogeneity.
- Targeting translation may be a viable therapeutic strategy for advanced prostate cancer.
