Related Experiment Video
Updated: Aug 7, 2026
An Orthotopic Murine Model of Human Prostate Cancer Metastasis
Published on: September 19, 2013
Growth inhibition of prostate cell lines in vitro by phyto-oestrogens
J Hempstock1, J P Kavanagh, N J George
1Department of Urology, University Hospital of South Manchester, Withington, Manchester, UK.
Objective:
To assess a range of phyto-oestrogens as moderators of growth and metabolism in several prostate cell lines.
Materials And Methods:
Four prostate cell lines (PNT-1/A, PNT-2, PC-3 and DU145) were challenged with different doses of five phyto-oestrogens (biochanin A, daidzein, genistein, genistin and nordihydroguaiaretic acid) over 3 days in culture. Cell proliferation was assessed by incorporation of 5-bromo-2'-deoxyuridine (BrdU) and metabolic activity by cleavage of a tetrazolium salt (XTT).
Results:
Growth and metabolism were inhibited with all compounds and cell lines (e.g. the dose for 50% inhibition of proliferation of PC-3 cells by genistein was 38 micromol/L); differences in the patterns of results suggested that different mechanisms operated, but there was no evidence for any synergistic activity on the inhibition of cell proliferation.
Conclusion:
These results offer further support for the hypothesized role of phyto-oestrogens as dietary protectors against prostatic cancer.
Insights
Phyto-estrogens inhibited growth and metabolism in prostate cancer cells. These findings support the role of phyto-estrogens in dietary protection against prostate cancer.
Area of Science:
- Phytochemistry
- Cell Biology
- Oncology
Background:
- Phyto-estrogens are plant-derived compounds with potential health benefits.
- Prostate cancer is a significant health concern globally.
- Understanding phyto-estrogen effects on prostate cells is crucial for chemoprevention strategies.
Purpose of the Study:
- To evaluate the impact of various phyto-estrogens on prostate cell growth and metabolism.
- To investigate the dose-dependent effects of selected phyto-estrogens on different prostate cell lines.
Main Methods:
- Four human prostate cell lines (PNT-1/A, PNT-2, PC-3, DU145) were treated with five phyto-estrogens (biochanin A, daidzein, genistein, genistin, nordihydroguaiaretic acid) for 3 days.
- Cell proliferation was measured using 5-bromo-2'-deoxyuridine (BrdU) incorporation.
- Metabolic activity was assessed via tetrazolium salt (XTT) cleavage.
Main Results:
- All tested phyto-estrogens inhibited cell proliferation and metabolic activity across all prostate cell lines.
- Specific dose-response relationships were observed, with genistein inhibiting PC-3 cell proliferation by 50% at 38 micromol/L.
- No synergistic effects were detected for the inhibition of cell proliferation.
Conclusions:
- Phyto-estrogens demonstrate inhibitory effects on prostate cancer cell growth and metabolism.
- These findings support the hypothesis that dietary phyto-estrogens may offer protection against prostate cancer.
