Academic Journal
Epigenetic modulation of BRCA1and BRCA2gene expression by equol in breast cancer cell lines
| العنوان: | Epigenetic modulation of BRCA1and BRCA2gene expression by equol in breast cancer cell lines |
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| المؤلفون: | Bosviel, Rémy, Durif, Julie, Déchelotte, Pierre, Bignon, Yves-Jean, Bernard-Gallon, Dominique |
| المصدر: | British Journal of Nutrition ; volume 108, issue 7, page 1187-1193 ; ISSN 0007-1145 1475-2662 |
| بيانات النشر: | Cambridge University Press (CUP) |
| سنة النشر: | 2012 |
| الوصف: | S -Equol is a metabolite resulting from the conversion of daidzein, a soya phyto-oestrogen, by the gut microflora. The potential protective effects of equol in breast cancer are still under debate. Consequently, we investigated the effects of equol on DNA methylation of breast cancer susceptibility genes ( BRCA1 and BRCA2 ) and oncosuppressors in breast cancer cell lines (MDA-MB-231 and MCF-7) and in a dystrophic breast cell line (MCF-10a) following exposure to S -equol (2 μ m ) for 3 weeks. We demonstrated by quantitative analysis of methylated alleles a significant decrease in the methylation of the cytosine phosphate guanine (CpG) islands in the promoters of BRCA1 and BRCA2 after the S -equol treatment in MCF-7 and MDA-MB-231 cells and a trend in MCF-10a cells. We also showed that S -equol increases BRCA1 and BRCA2 protein expression in the nuclei and the cytoplasm in MCF-7, MDA-MB-231 and MCF-10a cell lines by immunohistochemistry. The increase in BRCA1 and BRCA2 proteins was also found after Western blotting in the studied cell lines. In summary, we demonstrated the demethylating effect of S -equol on the CpG islands inside the promoters of BRCA1 and BRCA2 genes, resulting in an increase in the level of expressed oncosuppressors in breast cancer cell lines. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1017/s000711451100657x |
| الاتاحة: | http://dx.doi.org/10.1017/s000711451100657x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S000711451100657X |
| Rights: | https://www.cambridge.org/core/terms |
| رقم الانضمام: | edsbas.39692F0B |
| قاعدة البيانات: | BASE |
| DOI: | 10.1017/s000711451100657x |
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