项目名称: 脐带间充质干细胞抑制肺癌转移的作用和机理的研究
项目编号: No.81201760
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 肿瘤学1
项目作者: 狄国虎
作者单位: 中国人民解放军军事医学科学院
项目金额: 22万元
中文摘要: 间充质干细胞(MSC)与肿瘤的相互作用存在着较多的争议.近期,我们发表的研究结果显示:MSC可以显著抑制Lewis肺癌在小鼠体内的肺转移,减轻化疗药物阿霉素(AMD)对机体造成的损伤。进一步的transwell迁移实验显示,MSC对高转移肺癌细胞A549和95D的迁移具有显著的抑制作用,却显著促进乳腺癌细胞系MDA-MB-231,MCF-7等的迁移。根据我们的初步结果,我们推测,MSC对不同肿瘤细胞系的作用不同与肿瘤细胞膜受体的表达差异密切相关,因此我们拟展开以下研究:1.分析共培养后,不同肿瘤细胞系膜受体酪氨酸激酶磷酸化水平的差异,筛选抑制肺癌转移的目标膜受体。2.阐明MSC对肺癌细胞的抑制作用是否与MSC的来源,生理状态等有关。3.深入分析并阐明MSC抑制肺癌转移的相关信号通路。本研究将首次阐明人脐带MSC抑制肺癌转移的作用机理,为MSC临床应用的安全性提供实验依据.
中文关键词: 间充质干细胞;肿瘤;老化;炎性因子;
英文摘要: The interaction between mesenchymal stem cell(MSC) and cancer is controversial, our published results indicated that human umbilical cord derivrd MSC could mitigate tisuue injury caused by Adriamycin and significantly inhibit lung metastasis of Lewis lung carcinoma cell. The following transwell experiment indicated that MSC could dramatically inhibit the migration of lung cancer cell A549 and 95D, but promote the invasion of breast cancer cell MDA-MB-231 and MCF-7. According to our preliminary results, we presume that the discrepancy effect of MSC on different cancer cells is due to the disparity expression of membrane receptor proteins. we prepare to do the following researches: 1.analyze the tumor cell membrane receptor phosphoproteomics.2.clarify whether the suppressive effect of MSC on lung cancer influnced by the origin and physiology of MSC 3.clarify the correlative signal pathway. Our research will first clarify the mechanism of suppressive effect of MSC on lung cancer metastasis and provide the preclinical results for evaluate the safety of stem cell therapy.
英文关键词: mesenchymal stem cells;tumor;aging;inflammatory factors;