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目的:探讨长链非编码RNA LINC00630在膀胱癌细胞中的表达，以及体外干扰其表达对膀胱癌细胞增殖和迁移的影响。方法:采用实时荧光定量聚合酶链反应（qRT-PCR）检测膀胱癌细胞株5637、BIU-87、T24、J82和正常膀胱上皮细胞株SV-HUC-1中LINC00630的表达。选择LINC0063表达量最高的膀胱癌细胞株进行后续实验；采用对照慢病毒感染细胞作为对照组，干扰LINC00630表达的慢病毒感染细胞为实验组。qRT-PCR检测两组细胞中LINC00630的表达，分别采用MTS法和细胞划痕实验检测两组细胞的增殖和迁移能力。qRT-PCR检测两组细胞中神经调节蛋白1（NRG1）mRNA的表达，蛋白质印迹法检测两组细胞中NRG1蛋白、细胞增殖相关蛋白（cyclin D3、CDK2）及细胞转移相关蛋白（Vimentin、N-cadherin）的表达情况。结果:与SV-HUC-1细胞比较（1.05±0.17），LINC00630在各膀胱癌细胞株中表达量均增加（均n P<0.01），在J82细胞中的表达最高（相对表达量5.83±0.42）。与对照组J82细胞相比，实验组J82细胞中LINC00630表达降低（0.18±0.02比1.00±0.05，n t=14.36，n P<0.01）；转染第2天起，实验组细胞增殖活力均低于对照组（均n P<0.05）。实验组细胞划痕闭合率低于对照组[（27.4±7.1）%比（66.0±5.4）%，n t=4.31，n P<0.01]。实验组NRG1 mRNA的相对表达量较对照组降低（0.34±0.03比1.07±0.24，n t=2.99，n P<0.05）。与对照组相比，实验组细胞中NRG1蛋白、细胞增殖相关蛋白及细胞转移相关蛋白均降低。n 结论:LINC00630在膀胱癌细胞株中表达上调；干扰LINC00630可能通过下调NRG1基因的表达，抑制J82细胞增殖和迁移能力。LINC00630可能是膀胱癌治疗新的分子靶标。“,”Objective:To explore the expression of long non-coding RNA LINC00630 in bladder cancer cell lines, and to explore the effect of interference with its expression in vitro on the proliferation and migration of bladder cancer cells.Methods:Real-time fluorescent quantitative polymerase chain reaction (qRT-PCR) was used to detect the expression of LINC00630 in bladder cancer cell lines 5637, BIU-87, T24, J82 and normal bladder epithelial cell line SV-HUC-1. The bladder cancer cell line with the highest LINC00630 expression was selected for follow-up experiments, then the cell line infected with the control lentivirus was used as the control group, and the cell line infected with the lentivirus that could interfere with the expression of LINC00630 was used as the experimental group. qRT-PCR was used to detect the expression of LINC00630 in the two groups of cells. MTS method and cell scratch test were used to detect the proliferation and migration abilities of cells in the two groups. qRT-PCR was used to detect the expression of neuregulin 1 (NRG1) mRNA in the two groups of cells, and Western blot was used to detect the expressions of NRG1 protein, cell proliferation-related proteins (cyclin D3 and CDK2) and cell migration-related proteins (Vimentin and N-cadherin) in the two groups of cells.Results:Compared with SV-HUC-1 cells (1.05±0.17), the expression of LINC00630 was significantly increased in all bladder cancer cell lines (all n P < 0.01), and the expression was highest in J82 cells (relative expression 5.83±0.42). Compared with J82 cells of the control group, the expression of LINC00630 in J82 cells of the experimental group decreased (0.18±0.02 vs. 1.00±0.05, n t=14.36, n P < 0.01); from day 2 of transfection, the cell proliferation activity of the experimental group was lower than that of the control group (all n P < 0.05). The cell scratch closure rate of the experimental group was lower than that of the control group [(27.4±7.1)% vs. (66.0±5.4)%, n t = 4.31, n P < 0.01]. Therelative expression of NRG1 mRNA in the experimental group was lower than that in the control group (0.34±0.03 vs. 1.07±0.24, n t = 2.99, n P < 0.05). Compared with the control group, the expressions of NRG1 protein, cell proliferation-related proteins and cell migration-related proteins in the experimental group were reduced.n Conclusions:LINC00630 is up-regulated in bladder cancer cell lines, and interference with LINC00630 may inhibit the proliferation and migration of J82 cells by down-regulating the expression of NRG1 gene. LINC00630 may be a new molecular target for the treatment of bladder cancer.