
黏蛋白16基因通过磷酸肌醇3-激酶/蛋白激酶B通路调节胆囊癌细胞活力和迁移
Mucin 16 regulating activity and migration of gallbladder cancer cells through phosphoinositide 3-kinase/protein kinase B pathway
目的 探讨黏蛋白16基因(MUC16)是否通过磷酸肌醇3-激酶/蛋白激酶B(PI3K/Akt)通路调节胆囊癌细胞(GBC-SD)活力和迁移。 方法 过表达MUC16后,通过Real-time PCR筛选相关基质金属蛋白酶(MMP)家族的蛋白质。其次,过表达MUC16、敲低MUC16和PI3K/Akt通路抑制剂BKM120处理后,通过免疫印迹法检测PI3K/Akt通路和MMP-9的蛋白水平。最后,过表达MUC16或敲低MUC16,通过细胞计数试剂盒8(CCK-8)和刮伤实验检测GBC-SD的活力和迁移情况。结果 过表达MUC16后,MMP-9 mRNA的相对表达量显著升高(P<0.05)。过表达MUC16后, MMP-9、p-Akt、PI3K的蛋白水平明显升高(P<0.05),但是PI3K抑制剂BKM120可以避免这现象。而敲低MUC16后,发现MMP-9、p-Akt、PI3K的蛋白水平明显降低(P<0.05)。过表达MUC16后,GBC-SD的细胞活力和迁移能力明显增高(P<0.05),而敲低了MUC16后,GBC-SD的细胞活力和迁移能力明显降低(P<0.05)。另外,敲低MMP-9后,GBC-SD的细胞活力和迁移能力也明显降低(P<0.05)。但是,在过表达MUC16的同时敲低MMP-9,发现GBC-SD的细胞活力和迁移能力与对照组相比差异无显著性(P>0.05)。 结论 MUC16激活PI3K/Akt通路促进MMP-9的蛋白表达,进而提升胆囊癌细胞GBC-SD的细胞活力和迁移能力。
Objective To investigate the effect of mucin 16(MUC16) on the viability and migration of gallbladder cancer cells (GBC-SD) through phospho inositide 3-kinase/protein kinase B (PI3k/Akt) pathway. Methods Firstly, after overexpression of MUC16, the matrix metalloproteinase(MMP) family proteins were screened by Real-time PCR. Secondly, after overexpression of MUC16, knockdown of MUC16 and PI3K/Akt pathway inhibitor BKM120, the protein levels of PI3K/Akt pathway and MMP-9 were detected by Western blotting. Finally, the proliferation, viability and migration of gallbladder cancer cells were detected by cell counting kit-8 (CCK-8) and scratch test. Results After overexpression of MUC16, the relative expression of mRNA in MMP-9 increased significantly (P<0.05). After overexpression of MUC16, the levels of MMP-9, p-Akt and PI3K increased significantly (P<0.05), but PI3K inhibitor BKM120 could avoid this phenomenon. After knocking down MUC16, the protein levels of MMP-9, p-Akt and PI3K decreased significantly (P<0.05).After overexpression of MUC16, the cell viability and migration ability of GBC-SD increased significantly (P<0.05), while after knocking down MUC16, the cell viability and migration ability of GBC-SD decreased significantly (P<0.05). In addition, after knocking down MMP-9, the cell viability and migration ability of GBC-SD also decreased significantly (P<0.05). However, when MUC16 was overexpressed and MMP-9 was knocked down, there was no significant difference in cell viability and migration ability between GBC-SD and the control group (P>0.05). Conclusion MUC16 activates PI3K/Akt pathway to promote the expression of MMP-9 protein, thereby enhancing the cell viability and migration of GBC-SD.
黏蛋白16基因 / 磷酸肌醇3-激酶/蛋白激酶B通路 / 基质金属蛋白酶9 / 胆囊癌细胞 / 免疫印迹法 / 实时定量聚合酶链反应 / 人
Mucin 16 / Phoshoinositide 3-kinase/protein kinase B pathway / Matrix metalloproteinase-9 / Gallbladder cancer cell / Western blotting / Real-time PCR / Human
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