The Antitumor Effects in vitro and Impact on Colon Cancer in Rats of Endostatin Transfected Bifidobacterium Oral Powder Preparation / 医学研究杂志

ABSTRACT

Objective To study the antitumor effects in vitro and impact on colon cancer in rats of endostatin transfected bifidobacterium oral powder preparation(ETB-2).Methods Growth inhibitory effect of the cecropins on normal human gastric epithelial cell line(GES-1) and human colon adenocarcinoma cell line(LS-174T) was observed using a microculturetetrazolium(MTT) colorimetric methods.Male Wistar rats were divided into 4 groups.All treatments were completed in a course of 18 weeks and the experiment was finished at week 33.Results The cecropins showed selective cytotoxic activity against the human colon adenocarcinoma cell line.There was a significant lower in incidence of colon tumors in rats(70%vs100%,P0.05).Conclusion ETB-2 has significant preventive effect on colon cancer induced by DMH in rats.