过表达lncRNA LINC00886 抑制食管鳞状细胞癌Eca109 细胞的恶性生物学行为

摘要] 目的: 检测lncRNA LINC00886 在食管鳞状细胞癌（ESCC）组织及细胞系中的表达及其对Eca109 细胞体外增殖、迁移及侵袭的影响。方法: 收集2014 年6 月至2016 年12 月河北医科大学第四医院生物标本库69 例ESCC手术患者的癌及对应的癌旁组织标本，以及ESCC细胞系Eca109、TE13、TE1、Kyse150、Yes-2 和Kyse170，用qPCR 法检测LINC00886 在ESCC组织及细胞系中的表达情况。分别用pIRES2-LINC00886、pIRES2-NC转染Eca109 细胞，用qPCR法检测pIRES2-LINC00886 转染Eca109细胞后LINC00886 的过表达效率；用MTS、克隆形成实验、划痕愈合实验、Transwell 侵袭实验分别检测过表达LINC00886 对Eca109 细胞增殖、迁移及侵袭能力的影响。结果: 在ESCC组织中LINC00886 表达水平明显低于癌旁组织（P<0.01），其表达水平与肿瘤TNM分期和淋巴结转移相关（均P<0.05）。LINC00886 在ESCC 细胞中的表达水平也低于对照组（均P<0.01）。转染pIRES2-LINC00886 后，Eca109 细胞中LINC00886 的表达水平显著高于对照组（均P<0.05）。与对照组相比，过表达LINC00886 明显抑制Eca109 细胞的增殖、迁移和侵袭能力(均P<0.01)。结论: lncRNA LINC00886 低表达可能与ESCC的发生发展相关，过表达LINC00886可抑制ESCC细胞的增殖、迁移与侵袭能力。

lncRNA LINC00886 over-expression inhibits malignant biological behaviors of esophageal squamous cell carcinoma Eca109 cells

Abstract] Objective: To investigate the expression of lncRNA LINC00886 in human esophageal squamous cell carcinoma (ESCC) tissues and cell lines, and its effects on proliferation, migration and invasion of Eca109 cells. Methods: The cancer tissues and corresponding para-cancerous tissues of 69 ESCC patients were collected in the biological specimen bank of the Fourth Hospital of Hebei Medical University from June 2014 to December 2016; the ESCC cell lines Eca109, TE13, TE1, Kyse150, Yes-2 and Kyse170 were also collected. LINC00886 gene expression in ESCC tissues and cell lines was detected by qPCR. Eca109 cells were transfected with pIRES2-LINC00886 and pIRES2-NC, respectively, and the overexpression efficiency of LINC00886 gene in Eca109 cells was detected by qPCR; MTS, clone formation assay, wound-healing assay and Transwell invasion assay were respectively used to detect the effect of LINC00886 over-expression on proliferation, migration and invasion ability of Eca109 cells. Results: The expression of LINC00886 gene in ESCC tissues was significantly lower than that in para-cancerous tissues (P<0.01), and its expression level was associated with tumor TNM stage and lymph node metastasis (both P<0.05). The expression level of LINC00886 gene in ESCC cell lines was also lower than that of the control group (all P<0.01). Compared with control group, the expression level of LINC00886 gene was significantly higher in Eca109 cells transfected with pIRES2-LINC00886 (both P<0.05). Compared with the control group, LINC00886 overexpression significantly inhibited the proliferation, migration and invasion abilities of Eca109 cells (all P<0.01). Conclusion: The decreased expression of LINC00886 gene may be related to the occurrence and development of ESCC. Over-expression of LINC00886 gene inhibits the proliferation, migration and invasion abilities of ESCC cells.