[alpha1,2-fucosyltransferase gene transfection influences on biological behavior of ovarian carcinoma-derived RMG-I cells].

To explore the effect of alpha1,2-fucosyltransferase (alpha1,2-FT) gene on the biological behavior of ovarian carcinoma cells, the expression vector pcDNA3.1 -HFUT-H which containing human alpha1,2-FT gene coding region was constructed and transfected into ovarian carcinoma cell line RMG-I. alpha1,2-FT gene expression, Lewis y antigen expression, alpha1,2-FT activity, rates of cell growth and tumorogenesis in nude mice were compared before and after RMG-I being transfected. The transfection of alpha1,2-FT gene significantly increased the expression of alpha1,2-FT gene and Lewis y antigen in RMG-I cells. After the transfection, RMG-I cells showed remarkable improvement of alpha1,2-FT activity, cell proliferation, the ability of colony formation in soft agar and tumorogenesis in nude mice. The growth rates of alpha1,2-FT gene transfected RMG-I cells were obviously increased, presenting that the proportion of the cells in G2-M and S phases was obviously increased from 2.05% to 7.32% and from 23.95% to 33.27% respectively, and that of the cells in G1 phase was obviously decreased from 74.14% to 59.46%, as compared with the control group. These findings indicate that alpha1,2-FT and Lewis y antigen have the ability to enhance the proliferation and elevate the survival rates of RMG-I cells, which can promote the genesis and development of ovarian carcinoma.