Σφακιανάκης Αλέξανδρος
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Κυριακή 31 Ιουλίου 2016

A polysaccharide from Huaier induced apoptosis in MCF-7 breast cancer cells via down-regulation of MTDH protein.

A polysaccharide from Huaier induced apoptosis in MCF-7 breast cancer cells via down-regulation of MTDH protein.

Carbohydr Polym. 2016 Oct 20;151:1027-33

Authors: Luo Z, Hu X, Xiong H, Qiu H, Yuan X, Zhu F, Wang Y, Zou Y

Abstract
In this study, one homogeneous polysaccharide (SP1), with a molecular weight of 56kDa, was isolated from the Huaier fruiting bodies. It had a backbone consisting of 1,4-linked-β-d-Galp and 1,3,6-linked-β-d-Galp residues, which was terminated with 1-linked-α-d-Glcp and 1-linked-α-l-Araf terminal at O-3 position of 1,3,6-linked-β-d-Galp unit along the main chain in the ratio of 1.1:2.0:1.1:1.1. MTT assay showed that shMTDH or SP1 (100, 200 and 400μg/ml) was able to suppress the proliferation of MCF-7 cells, due to a significant increase in the number of apoptotic cells as determined by flow cytometric analysis. Furthermore, Western blot analysis revealed that SP1 or shMTDH treatment led to a rise of ratio between proapoptotic Bax and antiapoptotic Bcl-2 protein in MCF-7 cells. In addition, carcinogene MTDH protein expression in MCF-7 cells received SP1 (100, 200 and 400μg/mL) or shMTDH treatment was also repressed after 48h incubation. Taken together, these findings indicated that SP1 has anticancer potential in the treatment of human breast cancer.

PMID: 27474651 [PubMed - in process]



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