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Depression: 21st Century Solutions + The Dark Side of Wheat

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Abstract Title:

Curcumin modulates miR-19/PTEN/AKT/p53 axis to suppress bisphenol A-induced MCF-7 breast cancer cell proliferation.

Abstract Source:

Phytother Res. 2014 Oct ;28(10):1553-60. Epub 2014 May 15. PMID: 24831732

Abstract Author(s):

Xiaoting Li, Wei Xie, Chunfeng Xie, Cong Huang, Jianyun Zhu, Zhaofeng Liang, Feifei Deng, Mingming Zhu, Weiwei Zhu, Rui Wu, Jieshu Wu, Shanshan Geng, Caiyun Zhong

Article Affiliation:

Xiaoting Li

Abstract:

Breast cancer is the most common cancer in women. Bisphenol A (BPA), as a known endocrine disrupter, is closely related to the development of breast cancer. Curcumin has been clinically used in chemopreventation and treatment of cancer; however, it remains unknown whether microRNAs are involved in curcumin-mediated protection from BPA-associated promotive effects on breast cancer. In the present study, we showed that BPA exhibited estrogenic activity by increasing the proliferation of estrogen-receptor-positive MCF-7 human breast cancer cells and triggering transition of the cells from G1 to S phase. Curcumin inhibited the proliferative effects of BPA on MCF-7 cells. Meanwhile, BPA-induced upregulation of oncogenic miR-19a and miR-19b, and the dysregulated expression of miR-19-related downstream proteins, including PTEN, p-AKT, p-MDM2, p53, and proliferating cell nuclear antigen, were reversed by curcumin. Furthermore, the important role of miR-19 in BPA-mediated MCF-7 cell proliferation was also illustrated. These results suggest for the first time that curcumin modulates miR-19/PTEN/AKT/p53 axis to exhibit its protective effects against BPA-associated breast cancer promotion. Findings from this study could provide new insights into the molecular mechanisms by which BPA exerts its breast-cancer-promoting effect as well as its target intervention.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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