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文献信息

Morusin induces cell death through inactivating STAT3 signaling in prostate cancer cells

期刊名:Am J Cancer Res.
文献编号: PMC4300697
文献地址: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4300697/
发表日期:2014 Dec 15.


Morusin induces cell death through inactivating STAT3 signaling in prostate cancer cells

Sung-Lyul Lim, Sang-Yoon Park,  Sukmin Kang,  Dain Park, Sung-Hoon Kim,  Jae-Young Um,  Hyeung-Jin Jang,  Jun-Hee Lee,  Chul-Ho Jeong , Jung-Hee Jang,  Kwang Seok Ahn  and Seok-Geun Lee

Abstract

STAT3 has been recognized as an efficacious drug target for prostate cancer because of its constitutive activation in this fatal disease. We recently identified the root bark of Morus alba Linn. as a potential STAT3 inhibitor among 33 phytomedicines traditionally used in Korea. Morusin, an active compound isolated from the root bark ofMorus alba, has shown anti-oxidant and anti-inflammatory effects. In the present study, we examined whether morusin has a potential as an anti-cancer agent in prostate cancer. We found that morusin suppressed viability of prostate cancer cells, but little effect in normal human prostate epithelial cells. Morusin also reduced STAT3 activity by inhibiting its phosphorylation, nuclear accumulation, and DNA binding activity. In addition, morusin down-regulated expression of STAT3 target genes encoding Bcl-xL, Bcl-2, Survivin, c-Myc and Cyclin D1, which are involved in regulation of apoptosis and cell cycle. Furthermore, morusin induced apoptosis in human prostate cancer cells by reducing STAT3 activity. Taken together, these results suggest that morusin could be a potentially therapeutic agent for prostate cancer by reducing STAT3 activity and inducing apoptosis.

 Morusin purchased from Biopurify Phytochemicals Ltd. (Chengdu, Sichuan, China) 

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