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  • Title: Genistein and daidzein act on a panel of genes implicated in cell cycle and angiogenesis by polymerase chain reaction arrays in human prostate cancer cell lines.
    Author: Rabiau N, Kossaï M, Braud M, Chalabi N, Satih S, Bignon YJ, Bernard-Gallon DJ.
    Journal: Cancer Epidemiol; 2010 Apr; 34(2):200-6. PubMed ID: 20097631.
    Abstract:
    BACKGROUND: The prostate cancer most frequently affects men. The ethnic origin and family antecedents of prostate cancer are established as risk factors. The genetic factors associated with environmental factors such as the nutrition also play a role in the development of the cancer. Epidemiological studies showed that the Asian populations exhibited an incidence of prostate cancer markedly subordinate by comparison with the Western populations. This would be explained partially by their important consumption of soy. Both main phytoestrogens of soy, the genistein and the daidzein, present anti-proliferative properties. METHODS: For that purpose, we used different prostate cancer cell lines (LNCaP, DU 145, PC-3) and, by flow cytometry, we determined the concentration of phytoestrogens inducing a cell cycle arrest and the required time of incubation. RESULTS: Then, the effects of 40microM genistein or 110microM daidzein for 48h were determined and studied on the expression of genes involved in the human cell cycle and angiogenesis and conducted by SYBR green quantitative PCR. CONCLUSION: We demonstrated modulations of cyclin-dependent kinase-related pathway genes, DNA damage-signaling pathway and a down-regulation of EGF and IGF.
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