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Abstract Title:

Antitumor activity of capsaicin on human colon cancer cells in vitro and colo 205 tumor xenografts in vivo.

Abstract Source:

J Agric Food Chem. 2010 Dec 22 ;58(24):12999-3005. Epub 2010 Nov 17. PMID: 21082859

Abstract Author(s):

Hsu-Feng Lu, Yuan-Liang Chen, Jai-Sing Yang, Yi-Yuan Yang, Jia-You Liu, Shu-Chun Hsu, Kuang-Chi Lai, Jing-Gung Chung

Article Affiliation:

Department of Clinical Pathology, Cheng Hsin General Hospital, Taipei 112, Taiwan.

Abstract:

Capsaicin was reported to inhibit cancer cell growth. The aim of this study was to evaluate the antitumor potential of capsaicin by studying antitumor activity in vitro as well as in vivo. The in vitro studies are to examine the effects of capsaicin on human colon cancer colo 205 cells after exposure to capsaicin. The results showed that capsaicin induced cytotoxic effects in a time- and dose-dependent manner and increased reactive oxygen species (ROS) and Ca(2+) but decreased the level of mitochondrial membrane potential (ΔΨ(m)) in colo 205 cells. Data from Western blotting analysis indicated that the levels of Fas, cytochrome c, and caspases were increased, leading to cell apoptosis. Capsaicin decreased the levels of anti-apoptotic proteins such as Bcl-2 and increased the levels of pro-apoptotic proteins such as Bax. Capsaicin-induced apoptosis in colo 205 cells was also done through the activations of caspase-8, -9 and -3. In vivo studies in immunodeficient nu/nu mice bearing colo 205 tumor xenografts showed that capsaicin effectively inhibited tumor growth. The potent in vitro and in vivo antitumor activities of capsaicin suggest that capsaicin might be developed for the treatment of human colon cancer.

Study Type : Animal Study, In Vitro Study
Additional Links
Pharmacological Actions : Apoptotic : CK(5217) : AC(3846)

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