中文摘要：

目的探讨miR-98对鼻咽癌细胞体外增殖和侵袭能力的影响及其可能机制。方法利用脂质体介导的miR-98mimic（及阴性对照）转染鼻咽癌CNE-1和CNE-2细胞，CCK-8检测其体外增殖能力的改变，划痕愈合及Transwell侵袭小室实验检测鼻咽癌细胞的体外迁移及侵袭潜能变化，生物信息学软件预测miR-98可能的靶基因，并经双荧光素酶及Westernblotting验证靶基因。结果MiR-98过表达能抑制鼻咽癌CNE-1和CNE-2细胞的体外生长增殖、迁移及侵袭能力；miR-98对MTDH具有直接靶向调控作用。结论本研究表明miR-98能够靶向MTDH调控鼻咽癌细胞株的体外生长增殖及侵袭能力。

英文摘要：

Objective To investigate the effect and mechanism of miR-98 on the proliferation and invasion in nasopharyngeal carcinoma （NPC） in vitro. Methods Liposome-mediated MiR-98 mimic and negative control were applied to transfect CNE-1 and CNE-2 cells. CCK-8 assay was used to examine the proliferation of the cells in vitro. Alterations of migration and invasion were assayed by scratches and transwell chambers. Target genes of miR-98 were predicted by online target gene prediction database. Dual luciferase reporter assay and western blotting were used to validate their binding. Results MiR-98 mimic successfully decreased capacities of growth, proliferation, migration and invasion in both CNE-1 and CNE-2 cell lines. Meanwhile, MTDH was a direct target gene of miR-98. Conclusion MiR-98 inhibits the growth, proliferation, migration and invasion of NPC cell lines by targeting MTDH.