中文摘要：

研究人胚胎干细胞H9与肿瘤细胞MDA-MB-231共培养上清液对乳腺癌MDA-MB-231细胞的抑制作用。建立人胚胎干细胞H9与乳腺癌MDA-MB-231细胞接触式共培养体系,收集共培养上清液。以单独培养的H9细胞上清为对照,显微镜下观察共培养上清液对肿瘤细胞生物行为学的影响,用MTT法检测上清液对MDAMB-231细胞增殖能力的影响,Hoechst染色及流式细胞术检测上清液对肿瘤细胞的凋亡影响;transwell小室法检测上清液对肿瘤细胞迁移及侵袭的影响。结果显示,共培养上清液能抑制MDA-MB-231细胞增殖,促进其凋亡,抑制肿瘤细胞的侵袭和迁移,而单独培养的H9细胞上清液对MDA-MB-231细胞几乎没有影响。因此得出结论,人胚胎干细胞H9与人乳腺癌MDA-MB-231细胞共培养的上清液对MDA-MB-231有一定的体外抑癌效应。

英文摘要：

This study was designed to investigate the inhibitory effect of supernatant from co-culture of human embryonic stem cells and tumor MDA-MB-231 cells on the breast cancer. The direct co-culture system of human embryonic stem cells H9 and breast cancer MDA-MB-231 cells was established, and the supernatant was tested in the inhibition of MDA-MB-231 cells. The inhibitory effects were examined in tumor cell morphology using microscope, cell proliferation with MTT assay, and cell apoptosis using the Hoechst staining and flow cytometry. Transwell assay was used to detect the migration and invasion of tumor cells. The results suggest that the supernatant significantly inhibited the proliferation, invasion and migration, and promoted cell apoptosis of MDA-MB-231 cells. However, the supernatant of H9 cells alone had little effect on MDA-MB-231 cells. Therefore, we conclude that the supernatant of co-culture cells had an inhibitory effect on tumor cells in vitro.