Résumé
AIM: To explore interaction and biological behaviou r changes of two kinds of cells-blastocysts and hepatocarcinoma cells in the same microenvi ronment. METHODS:The models of mouse blastocysts co-cultured wit h human hepatoca rcinoma cell lines were established, then biological behaviours and mutual effe c ts of the two kinds of cells in co-culture system were observed. RESULTS: Co mpared with control group, hepatocarcinoma cells with differently invasive and met astatic potential significantly enhanced the rates of blastocyst hatchment , at t achment and outgrowth(P0 05). The blastocyst ha tched and attached to hepatocarcinoma cells with differently invasive and metast atic p otential. Then, differential trophoblasts invaded hepatocarcinoma cells. The clear-cut interfaces were gradually formed between both sides. Hepatocarcinoma cells o n interface showed changes of growth direction and cell shapes and did not inv ade blastocysts. CONCLUSIONS: Hepatocarcinoma cells promoted bla stocyst develo pment. Blastocysts implanted and invaded hepatocarcinoma cells with differentl y i nvasive and metastatic potential in vitro, which indicate that blastocyst i mplan tation in vitro does not relate with the kinds and differential level of int erac tional cells and the low selectivity maybe relate with high adaptability of earl y life.