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Abstract Title:

Exploring a novel target treatment on breast cancer: aloe-emodin mediated photodynamic therapy induced cell apoptosis and inhibited cell metastasis.

Abstract Source:

Anticancer Agents Med Chem. 2015 Aug 20. Epub 2015 Aug 20. PMID: 26295333

Abstract Author(s):

Qing Chena, Si Tiana, Jing Zhub, Kai-Ting Lia, Ting-He Yuc, Le-Hua Yub, Ding-Qun Bai

Article Affiliation:

Qing Chena

Abstract:

Photodynamic therapy (PDT), as a clinical cancer therapy, is a mild therapy, which involves application of photosensitizers (PSs) which located in target cells and then be irradiated by corresponding wawelength. The activation of PSs generates radical oxygenspecies ( ROS) to exert a selective cytotoxic activity for the target cells. Aloeemodin (AE) has been found to be a anti-tumor agent in many studies, and it also demonstrated to be a photosensitizer in recent years. In order to study the mechanism of aloe-emodin as a photosensitizer. In the present study, we investigated the mechanisms of photo-cytotoxicity induced by aloe-emodin in breast cancer MCF-7 cells. Analysis of cell proliferation evidenced that there was a dramatically depression after photodynamic treatment with aseries of aloe-emodin concentration and light doses showed. We observed changes apoptosis and demonstrated that the mechanisms of apoptosis were involved of mitochondrial and endoplasmic reticulum death pathway. The capacity of adhesion, migration and invasion of breast cells were measured usingWST8 and transwell assay and demonstrated that AE-PDT significantly inhibited adhesion, migration and invasion of MCF-7cells. The expression of MMP2, MMP9, VEGF and Nrf2 demonstrated that the metastasis was related to oxidative stress. Analysis of changes in cytoskeleton components (F-actin) evidenced cytoskeleton disorganization after treatment with AE-PDT. Taken together, the present results indicated that PDT with aloe emodin effectively suppressed cancer development in MCF-7cells, suggesting the potential of AE as one new photosensitizer in PDT can provide a new modility for treating cancer.

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Sayer Ji
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