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Planta Med 2010; 76(15): 1659-1665
DOI: 10.1055/s-0030-1249975
Pharmacology
Original Papers
© Georg Thieme Verlag KG Stuttgart · New York

Green and Black Tea Inhibit Cytokine-Induced Il-8 Production and Secretion in AGS Gastric Cancer Cells via Inhibition of NF-κB Activity

Fabiola Gutierrez-Orozco1 , Brian R. Stephens1 , Andrew P. Neilson2 , Rodney Green2 , Mario G. Ferruzzi2 , 3 , Joshua A. Bomser1
  • 1Department of Human Nutrition, The Ohio State University, Columbus, OH, USA
  • 2Department of Food Science, Purdue University, West Lafayette, IN, USA
  • 3Department of Foods and Nutrition, Purdue University, West Lafayette, IN, USA
Further Information

Publication History

received January 27, 2010 revised March 28, 2010

accepted April 22, 2010

Publication Date:
26 May 2010 (online)

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Erratum for: Green and Black Tea Inhibit Cytokine-Induced Il-8 Production and Secretion in AGS Gastric Cancer Cells via Inhibition of NF-κB ActivityPlanta Med 2010; 76(15): E7-E7
DOI: 10.1055/s-0030-1250052

Abstract

Consumption of tea is associated with a reduced risk for several gastrointestinal cancers. Inflammatory processes, such as secretion of IL-8 from the gastric epithelium in response to chronic chemokine or antigen exposure, serve both as a chemoattractant for white blood cells and a prerequisite for gastric carcinogenesis. In this study, the gastric adenocarcinoma cell line AGS was used to investigate the effect of green tea extract, black tea extract, and epigallocatechin gallate (EGCG), the most abundant catechin in tea, on cytokine-induced inflammation. AGS cells were stimulated with interleukin-1β (IL-1β) to initiate inflammation, followed by exposure to either tea extracts or EGCG. We found that both green and black tea extracts at concentrations of 20 and 2 µM total catechins, respectively, significantly (p < 0.05) inhibited IL-1β-induced IL-8 production and secretion to a similar extent. Treatment of AGS cells with EGCG (8 µM) produced similar reductions in IL-1β-induced IL-8 production and secretion. Inhibition of NF-κB activity was found to be responsible, in part, for these observed effects. Our findings demonstrate that both green and black tea extracts with distinctly different catechin profiles, are capable of disrupting the molecular link between inflammation and carcinogenesis via inhibition of NF-κB activity in AGS cells.

Key words

black tea - inflammation - gastric cancer - epigallocatechin gallate - green tea

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Dr. Joshua A. Bomser

Department of Human Nutrition
The Ohio State University

1787 Neil Ave

Columbus, OH 43210

USA

Phone: + 1 61 42 47 66 22

Fax: + 1 61 42 92 88 80

Email: bomser.1@osu.edu

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