目的： 探讨lncRNA SNHG11对非小细胞肺癌（NSCLC）A549细胞增殖、侵袭和迁移的影响及其可能机制。 方法:qPCR检测人胚肺细胞HEL-1和NSCLC细胞A549、H1299、HCC827中lncRNASNHG11和miR-193a-5p的表达水平，向A549细胞中转染SNHG11小干扰RNA（si-SNHG11）、miR-193a模拟物（miR-193a mimic）或miR-193a抑制剂（miR-193a inhibitor）后，CCK-8法检测其对细胞增殖的影响，Transwell小室和细胞划痕实验检测对细胞侵袭和迁移的影响，WB法检测对细胞增殖抗原Ki67、细胞周期蛋白D1 （cyclin D1）表达的影响，双荧光素酶报告实验验证lncRNASNHG11与miR-193a-5p的靶向关系。 结果： 与人胚肺细胞HEL-1相比，NSCLC细胞A549、H1299、HCC827中lncRNA SNHG11均呈高表达、miR-193a-5p呈低表达（均P<0.05）；沉默lncRNA SNHG11可抑制A549细胞的增殖、侵袭和迁移，降低细胞中Ki67和Cyclin D1蛋白的表达水平（均P<0.05）；过表达miR-193a-5p可抑制A549细胞增殖和侵袭迁移（均P<0.05）。lncRNASNHG11可靶向吸附miR-193a-5p，抑制miR-139a-5p可部分逆转沉默lncRNA SNHG11对A549细胞增殖、侵袭和迁移的作用（均P<0.05）。 结论：lncRNA SNHG11通过吸附miR-193a-5p促进NSCLCA549细胞的增殖、侵袭和迁移。

Objective: To investigate the effect of lncRNA SNHG11 on the proliferation, invasion and migration of non-small cell lung cancer (NSCLC) A549 cells and its possible mechanisms. Methods: qPCR was used to detect the levels of lncRNA SNHG11 and miR- 193a-5p in human embryonic lung cells (HEL-1) and lung cancer cells (A549, H1299, and HCC827). A549 cells were transfected with SNHG11 small interfering RNA (si-SNHG11), miR-193a mimic or miR-193a inhibitor. The proliferation of A549 cells was detected by CCK-8 assay, migration and invasion of A549 cells were detected by Wound healing and Transwell assay, the protein expression of Ki67 and Cyclin D1 was determined by Western blot, and the targeting relationship between lncRNA SNHG11 and miR-193a-5p was verified by Dual-luciferase reporter experiment. Results: Compared with HEL-1 cells, the expression level of lncRNA SNHG11 was significantly increased while the expression of miR-193a-5p was decreased in lung cancer A549, H1299 and HCC827 cells (all P<0.05). Silencing lncRNA SNHG11 inhibited the proliferation, migration and invasion of A549 cells and reduced the protein expression of Ki67 and Cyclin D1 (all P<0.05). Over-expression of miR-193a-5p inhibited the proliferation, migration and invasion of A549 cells (all P<0.05). lncRNA SNHG11 could targetedly adsorb miR-193a-5p. miR-139a-5p inhibition could partially reverse the effect of silencing lncRNA SNHG11 on the proliferation, invasion and migration of A549 cells (all P<0.05). Conclusion: lncRNA SNHG11 promotes the proliferation, invasion and migration of NSCLC cells by adsorbing miR-193a-5p.

浙江省中医药科技计划项目（No. 2021ZB078）；浙江省大学生创新创业项目（No. 202113023001；No. 202113023009）