Cytotoxic Activity of Epigallocatechin and Trans-Cinnamaldehyde in Gastric Cancer Cell Line

Introduction: Herbal medication is currently being utilized for treatment of numerous diseases, such as cancer which showed successful therapeutic efficacy in numerous studies. Epigallocatechin gallate (EGCG) is a compound of green tea that its role in tumor cell death has been reported. Likewise, trans-cinnamaldehyde (TC), the active ingredient in cinnamon oil showed anti-cancer properties in some previous studies. The aim of this study was to evaluate the cytotoxic effects of EGCC and TC on proliferation of gastric cancer cell line (AGS).Methods: AGS Cells were seeded and treated with various concentrations of EGCG and TC for 72 h and assessed for cell viability. To study the cytotoxic effect of drug in combination cases the lower doses than IC50 of EGCG and TC was utilized. The one-way analysis of variance (ANOVA) were used for statistical analysis.Results: various concentrations of EGCG and TC significantly inhibited the proliferation of AGS cells in dose dependent pattern. We found that in double combined cases cellular viability decreased in compared to IC50 of each single agents. Also, there were significant decrease in cellular viability in all single and double treated cases toward untreated cells (p<0.05).Conclusion: The results of this study indicated that EGCG and TC effects on AGS cell line were significantly high and dose-dependent and might be cooperative. Double combinations of these two agents may be considered as a potential therapeutic option for gastriccancer. Further investigation should be conducted to validate these combination in gastric cancer therapy.