目的:利用慢病毒包装系统使人眼小梁网细胞(HTMcs)稳定表达HESlshRNA并初步探索HESl在HTMCs的作用。方法:体外培养HTMCs和HEK293FT细胞并进行传代,同时应用pLKO.1-puroshRNA慢病毒载体构建HESlshRNA质粒。Lipofeetamine2000慢病毒包装法感染原代HTMCs,使其稳定表达HESlshRNA/Scramble质粒。采用q-PCR和Westernblot方法检测HESlshRNA的敲低效果及促纤维化细胞外基质蛋白(ECM)的表达变化;HTMCs增殖和迁移能力分别通过CCK-8细胞活性分析和Transwell计数实验进行分析。结果:原代细胞经过培养后贴壁生长,呈长梭形,生长状态良好,形态符合HTMCs形态学特征。HESlshRNA有效下调HESl的mRNA和蛋白水平表达(P〈0.05)。同时,HESlshRNA组促纤维化ECM(FN:COLl;α-SMA)的mRNA和蛋白表达水平较Scramble组显著降低(P〈0.05)。而Transwell计数实验显示HESlshRNA组HTMCs的迁移数量较Scramble组增加(P〈O.05);CCK-8细胞活性分析实验表明抑制HESl表达对HTMCs的增殖活性影响不大,差异不具有统计学意义(P〈0.05)。结论:成功建立了稳定表达HESlshRNA的HTMCs细胞株。HESl可以影响HTMCs中促纤维ECM的生成及HTMCs的增殖和迁移能力。
Objective: To establishhuman trabecular meshwork cells (HTMCs) cell line with stable HES1 shRNA expression and explore the role of Hairy and enhancer of split-1 (HES1) in HTMCs. Methods: Primary HTMCs and HEK293PT were cultured and passaged in vitro, and infected with HESlshRNA/Scramble lentivirns. The effects of HES1 knockdown on HES1 and profibrotic extracelluar matrix (ECM) expression were analyzed through q-PCR and Western blot. Transwell and CCK-8 counting assay were used to examine the ability of migration and proliferation HTMCs. Results: The cultured primary HTMCs were in a fibrocyte-like form with long fusiform shape and grew well. HTMCs infected with HES1 shRNA exhibited a significant decrease in HES1 and profibrotic ECM ( fibronectin, FN; collagen I, COL1; alpha-smooth muscle actin ,α-SMA ) expression. HES1 shRNA treatment also increased HTMCs migration and proliferation. Conclusion: HTMCs with stable HES1 shRNA expression can be successfully built. And HES1 could affect ECM expression and celluar functions in HTMCs.