褐藻糖胶对U266细胞自噬、迁移及侵袭的影响

发布时间：2018-09-07 12:41

【摘要】：目的·探讨褐藻糖胶对多发性骨髓瘤U266细胞自噬、迁移及侵袭的影响。方法·褐藻糖胶处理细胞后,透射电子显微镜(TEM)观察细胞自噬小体,Transwell小室观察细胞迁移及侵袭能力,Western blotting测定LC3-Ⅱ/LC3-Ⅰ、Beclin-1、P62、MMP9、CXCR4、p-AKT/T-AKT、p-m TOR/T-m TOR蛋白表达,ELISA法检测细胞培养液中MMP9含量。结果·(1)TEM观察发现,褐藻糖胶处理组自噬小体增加。(2)褐藻糖胶可降低U266细胞迁移及侵袭能力,并呈现出剂量依赖性,氯喹可阻断该抑制作用。(3)Western blotting结果显示,LC3-Ⅱ/LC3-Ⅰ、Beclin-1及MMP9蛋白表达随褐藻糖胶浓度增加而增加,P62、CXCR4、p-AKT/T-AKT及p-m TOR/T-m TOR蛋白表达随褐藻糖胶浓度增加而降低。(4)ELISA结果显示,褐藻糖胶处理组细胞培养液中MMP9的含量下降。结论·褐藻糖胶可诱导多发性骨髓瘤U266细胞自噬,抑制该细胞的迁移、侵袭能力。
[Abstract]:Objective to investigate the effects of fucoidan on autophagy, migration and invasion of multiple myeloma cell line U266. Methods after the cells were treated with fucoidan, the cell migration and invasiveness were observed by transwell chamber of autophagy body by transmission electron microscopy (TEM). The expression of MMP9 in cell culture medium was detected by LC3- 鈪，

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