Abstract

背景与目的本研究旨在探讨肺癌中miR-218的表达,研究miR-218在肺癌细胞中的功能及其可能的分子机制。方法应用实时荧光定量PCR(qRT-PCR)检测15例肺癌组织和15例癌旁组织中miR-218的表达。在肺癌细胞A549中转染miR-218的抑制物(Anti-miR-218),在肺癌细胞HCC4006中转染miR-218的模拟物后,用Transwell实验检测细胞的迁移侵袭能力的变化。用Targetscan和MiRanda软件预测miR-218的可能靶点,转染miR-218的抑制物及模拟物后用qRT-PCR和Western blot检测Robo1的mRNA和蛋白表达水平。用双荧光素酶报告基因方法鉴定miR-218和Robo1的调控关系。用Anti-miR-218、miR-218模拟物或阴性对照与Si-Robo1或Si-NC同时转染细胞,应用Transwell实验检测转染后细胞的侵袭迁移能力的变化。结果与癌旁组织比较,肺癌组织中miR-218在肺癌组织中表达水平显著降低(P < 0.01)。在A549细胞中转染miR-218的抑制物,能够显著降低miR-218的表达,促进了细胞的迁移侵袭。在HCC4006中转染miR-218的模拟物能够显著提高miR-218的表达,同时抑制了细胞的迁移侵袭能力。利用生物信息学预测出在Robo1的3′UTR区有miR-218的结合位点,双荧光素酶报告基因实验进一步证实miR-218能够调控Robo1的转录活性。抑制miR-218能够提高Robo1的表达;过表达miR-218显著降低Robo1的表达,且miR-218能够通过调控Robo1影响细胞的迁移侵袭。结论MiR-218在肺癌组织中呈现低表达状态,miR-218可能是通过抑制Robo1的表达抑制肺癌细胞侵袭迁移。

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.