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Article Publish Status: FREE
Abstract Title:

Withaferin-A Inhibits Colon Cancer Cell Growth by Blocking STAT3 Transcriptional Activity.

Abstract Source:

J Cancer Prev. 2015 Sep ;20(3):185-92. PMID: 26473157

Abstract Author(s):

Bu Young Choi, Bong-Woo Kim

Article Affiliation:

Bu Young Choi

Abstract:

BACKGROUND: Withania somnifera (known as Ashwagandha) is a medicinal plant used in the ayurvedic medicines in India. Withaferin-A, a withanolide derived from the leaf extract of W. somnifera, has been reported to exhibit anti-tumor activity against various cancer cells, such as leukemia, breast cancer and colon cancer cells.

METHODS: We investigated the anti-cancer effects of withaferin-A on the proliferation and migration of human colorectal cancer (HCT116) cells. And we evaluated the effects of withaferin-A on the transcriptional activity of STAT3 and the growth of HCT116 cells in xenograft mouse tumor model.

RESULTS: In the present study, we found that withaferin-A inhibited the proliferation and migration of HCT116 cells in a concentration-dependent manner. Treatment of HCT116 cells with withaferin-A attenuated interleukin-6-induced activation of STAT3, which has been implicated in the development and progression of colon cancer. To examine the effect of withaferin-A on HCT116 cells proliferation in vivo, we generated HCT116 cells xenograft tumors in Balb/c nude mice and treated the tumor bearing mice with or without withaferin-A intraperitoneally. Treatment with withaferin-A exhibited significant decrease in the volume and weight of tumors as compared to untreated controls.

CONCLUSIONS: The present study suggests that withaferin-A holds the potential to be developed as a small molecule inhibitor of STAT3 for the treatment of HCT116.

Study Type : Animal Study, In Vitro Study

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Sayer Ji
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