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首页> 外文期刊>Parasitology >Fluoride exposure inhibits protein expression and enzyme activity in the lung-stage larvae of Ascaris suum.
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Fluoride exposure inhibits protein expression and enzyme activity in the lung-stage larvae of Ascaris suum.

机译:氟化物暴露会抑制A虫肺部幼虫的蛋白质表达和酶活性。

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摘要

Sodium fluoride (NaF) is an anion that has been previously shown to block the moulting process of Ascaris suum larvae. This study describes moulting and development-specific protein expression profiles of A. suum lung-stage L3 (AsLL3) following NaF exposure. AsLL3s cultured in the presence or absence of NaF were prepared for protein analysis using two-dimensional (2D) electrophoresis. NaF exposure inhibited at least 22 proteins in AsLL3 compared with moulted larvae (i.e. AsLL4). A further comparison of AsLL4 with those of pre-cultured AsLL3 and NaF-exposed AsLL3 revealed 8 stage-specifically and 4 over-expressed proteins. Immunoblot analysis revealed an inhibition by NaF of 19 immunoreactive proteins. Enzyme assay and immunochemical data showed an inhibition of the moulting-specific inorganic pyrophosphatase activity by 41% and a decreased expression in NaF-treated larvae, indicating its significance in the moulting process. A protein spot associated with NaF inhibition was isolated and identified by peptide mass spectrometry and bioinformatics approaches to be a member of 3-hydroxyacyl-CoA dehydrogenase/short-chain dehydrogenase enzyme families. These results have implications for the identification of proteins specific to the moulting process as potential chemotherapeutic targets.
机译:氟化钠(NaF)是一种阴离子,以前已证明它能阻止A虫幼虫的蜕皮过程。这项研究描述了NaF暴露后,猪肺孢子虫肺阶段L3(AsLL3)的蜕皮和发育特异性蛋白质表达谱。使用二维(2D)电泳制备在存在或不存在NaF的条件下培养的AsLL3,用于蛋白质分析。与蜕皮的幼虫(即AsLL4)相比,NaF暴露抑制了AsLL3中的至少22种蛋白质。 AsLL4与预培养的AsLL3和NaF暴露的AsLL3的进一步比较显示,有8个阶段特异性蛋白和4个过表达蛋白。免疫印迹分析显示NaF抑制了19种免疫反应蛋白。酶法测定和免疫化学数据显示,蜕皮特异性无机焦磷酸酶活性受到抑制41%,在经NaF处理的幼虫中表达降低,表明其在蜕皮过程中具有重要意义。分离和NaF抑制相关的蛋白质斑点,并通过肽质谱和生物信息学方法鉴定为3-羟酰基-CoA脱氢酶/短链脱氢酶家族的成员。这些结果对于鉴定蜕皮过程特异的蛋白质作为潜在的化学治疗靶标具有重要意义。

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