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

Abstract Title:

Role of AMPK signaling in mediating the anticancer effects of silibinin in esophageal squamous cell carcinoma.

Abstract Source:

Expert Opin Ther Targets. 2016 Jan ;20(1):7-18. Epub 2015 Dec 15. PMID: 26568207

Abstract Author(s):

Jin Li, Bin Li, Wen Wen Xu, Kwok Wah Chan, Xin Yuan Guan, Yan Ru Qin, Nikki Pui Yue Lee, Kin Tak Chan, Simon Law, Sai Wah Tsao, Annie Lm Cheung

Article Affiliation:

Jin Li

Abstract:

OBJECTIVE: Emerging evidence suggests that activation of adenosine monophosphate-activated protein kinase (AMPK) may suppress cancer growth. Identification of novel AMPK activators is therefore crucial to exploit AMPK as a potential target for cancer prevention and treatment.

RESEARCH DESIGN AND METHODS: We determined the expression status and role of AMPK in esophageal squamous cell carcinoma (ESCC) and investigated whether silibinin, a nontoxic natural product, could activate AMPK to inhibit ESCC development.

RESULTS: Our results from 49 pairs of human ESCC and normal tissues showed that AMPK was constitutively inactive in the majority (69.4%) of ESCC. We found that silibinin induced apoptosis, and inhibited ESCC cell proliferation in vitro and tumorigenicity in vivo without any adverse effects. Silibinin also markedly suppressed the invasive potential of ESCC cells in vitro and their ability to form lung metastasis in nude mice. The anticancer effects of silibinin were abrogated by the presence of compound C or shRNA against AMPK. More importantly, silibinin enhanced the sensitivity of ESCC cells and tumors to the chemotherapeutic drugs, 5-fluorouracil and cisplatin.

CONCLUSIONS: This preclinical study supports that AMPK is a valid therapeutic target and suggests that silibinin may be a potentially useful therapeutic agent and chemosensitizer for esophageal cancer.

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

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