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1.350000 福州,福建医科大学附属第一医院:消化内科
2.350000 福州,福建医科大学附属第一医院:胃肠外科
[郑建涛,E-mail: zhengjiant14@sina.com ZHENG Jiantao, E-mail: zhengjiant14@sina.com
收稿:2017-11-10,
修回:2018-04-15,
纸质出版:2018-07-30
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刘益娟, 张琳, 郑建涛, 等. miRNA-455-3p对HCT116结肠癌细胞迁移、侵袭的影响及机制研究[J]. 第三军医大学学报, 2018,40(14):1286-1290.
Yijuan LIU, Lin ZHANG, Jiantao ZHENG, et al. Effect of miR-455-3p overexpression on migration and invasion of colon cancer HCT116 cells and possible mechanism[J]. Journal of Third Military Medical University, 2018, 40(14): 1286-1290.
刘益娟, 张琳, 郑建涛, 等. miRNA-455-3p对HCT116结肠癌细胞迁移、侵袭的影响及机制研究[J]. 第三军医大学学报, 2018,40(14):1286-1290. DOI: 10.16016/j.1000-5404.201711074.
Yijuan LIU, Lin ZHANG, Jiantao ZHENG, et al. Effect of miR-455-3p overexpression on migration and invasion of colon cancer HCT116 cells and possible mechanism[J]. Journal of Third Military Medical University, 2018, 40(14): 1286-1290. DOI: 10.16016/j.1000-5404.201711074.
目的
2
探讨miRNA-455-3p对HCT116结肠癌细胞迁移、侵袭的影响及机制研究。
方法
2
采用脂质体Lipofectamine
TM
3000将miR-455-3p mimics和miR-455-3p NC转入HCT116结肠癌细胞中,Real-time PCR检测细胞中miR-455-3p表达,MTT法检测细胞活力,划痕实验检测细胞迁移能力,Transwell实验检测细胞侵袭能力,Western blot检测细胞中基质金属蛋白酶2(matrix metalloproteinases 2,MMP2)、MMP9、磷脂酰肌醇3激酶(phosphatidylinositol 3 kinase,PI3K)/蛋白激酶B(protein kinase B,AKT)信号通路相关蛋白的表达。
结果
2
与miR-455-3p NC组比较,miR-455-3p mimics组miR-455-3p表达量显著提高(
P
<0.01),细胞活力、迁移能力、侵袭能力均显著降低(
P
<0.01),MMP2、MMP9、PI3K及p-AKT表达量均显著下调(
P
<0.01)。
结论
2
miR-455-3p mimics可能通过阻断PI3K/AKT信号通路抑制HCT116细胞的迁移及侵袭。
Objective
2
To investigate the effect of miR-455-3p overexpression on the migration and invasion of colon cancer HCT116 cells and explore the underlying mechanism.
Methods
2
HCT116 cells were transfected with miR-455-3p mimics or miR-455-3p NC using Lipofectamine
TM
3000
and the expression of miR-455-3p in t
he cells was detected with real-time PCR. The changes in the viability of the transfected cells was assessed using MTT assay
and the alterations in the cell migration and invasion abilities of the cells were investigated using scratch wound healing assay and Transwell assay
respectively. The expression levels of matrix metalloproteinases 2 (MMP2)
MMP9
and the proteins related with the phosphatidylinositol 3 kinase (PI3K)/protein kinase B (AKT) signaling pathway were detected using Western blotting.
Results
2
Compared with miR-455-3p NC
transfection with miR-455-3p mimics resulted in significantly up-regulated expression of miR-455-3p (
P
<
0.01)
obviously lowered cell viability and migration and invasion abilities (
P
<
0.01)
and significant down-regulation of the expression of MMP2
MMP9
PI3K and p-AKT (
P
<
0.01) in HCT116 cells.
Conclusion
2
Overexpression of miR-455-3p can inhibit the migration and invasion of HCT116 cells
in vitro
possibly by blocking the PI3K/AKT signaling pathway.
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