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《Acta Nutrimenta Sinica》 2006-02
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EFFECTS OF GENISTEIN ON TUMOR-ASSOCIATED GENE EXPRESSION IN MCF-7 CELLS

YU Zeng-li, ZHANG Li-shi 1, WU De-sheng 1 ( School of Public Health, Zhengzhou University, Zhengzhou 450052;1Huaxi School of Public Health, Sichuan Universitya, Chengdu 610041, China)  
Objective: To characterize the effects of genistein (GS) on tumor-associated gene expression in MCF-7 cells and to explore the mechanisms. Method: MCF-7 cells were treated with GS (75×10-6 mol/L) or with vehicle (0.1% ethanol, EtOH) for 72 h. The cells were collected and total RNA was extracted, marked by two different fluorescence dyes (Cy3 and Cy5) using reverse transcriptional reaction, respectively. The derived cRNA was hybridized to human tumor-associated microarrays. Data were processed using the Scan Array 3000 and ontological analysis was performed using the Ima Gene 3.0 software. Results: At 72 h, 18 transcripts were downregulated compared to EtOH vehicle control by greater than 2- fold and 4 were upregulated by less than 0.5-fold. The predominant ontological groupings were oncogenes, cell proliferation, apoptosis, and estrogen-regulation genes. Conclusion: GS treatment is associated with significant changes in gene expression in several functional categories in MCF-7 cells, and this might account for the role of genistein in prevention of breast cancer.
【Fund】: 国家自然科学基金(No.30030120)
【CateGory Index】: R737.9
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【Citations】
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