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Molecular Mechanism of Bovine Trabecular Meshwork Cells Apoptosis Induced by Dexamethasone and Protection by Pilocarpine

机译:地塞米松诱导牛小梁网细胞凋亡的分子机制及毛果芸香碱的保护

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Purpose: To study the molecular mechanism of trabecular meshwork cells apoptosis induced by dexamethasone and the protection of pilocarpine. Methods: Determining mRNA expression with reverse transcription-polymerase chain reaction (RT-PCR), protein expression with Western blots and the percentage of apoptotic cells with fluorescent microscopy. Results: Dexamethasone up-regulated Fas proteins and affected Bax, caspase-8 and caspase-9 proteins in an action of first decrease then increase. Pre -treatment with pilocarpine decreased the four proteins expression, which were increased by dexamethasone. Pilocarpine self could decrease pro-apoptotic factors Bax, caspase-8 and caspase-9 proteins expression. Conclusion: Fas/FasL pathway participated in apoptotic process induced by dexamethasone in trabecular meshwork cells and the process was probably related with both caspase-8 and caspase-9 pathways. Pilocarpine protected the cells against apoptosis through down-regulating Fas, Bax, caspase-8 and caspase-9 proteins expression.
机译:目的:研究地塞米松诱导小梁网细胞凋亡的分子机制及毛果芸香碱的保护作用。方法:用逆转录-聚合酶链反应(RT-PCR)测定mRNA表达,用Western印迹法测定蛋白质表达,并用荧光显微镜测定凋亡细胞的百分比。结果:地塞米松上调Fas蛋白并影响Bax,caspase-8和caspase-9蛋白,先降低后升高。用毛果芸香碱预处理可降低四种蛋白质的表达,地塞米松可增加这四种蛋白质的表达。毛果芸香素自身可能降低促凋亡因子Bax,caspase-8和caspase-9蛋白的表达。结论:Fas / FasL途径参与了地塞米松诱导的小梁网细胞凋亡过程,可能与caspase-8和caspase-9途径有关。毛果芸香碱通过下调Fas,Bax,caspase-8和caspase-9蛋白表达来保护细胞免于凋亡。

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