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JoVE Encyclopedia of Experiments
Immunology
通过病毒灭活测定评估抗病毒测试化合物的有效性
通过病毒灭活测定评估抗病毒测试化合物的有效性
Encyclopedia of Experiments
Immunology
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Encyclopedia of Experiments Immunology
Assessing the Effectiveness of an Antiviral Test Compound through a Viral Inactivation Assay

通过病毒灭活测定评估抗病毒测试化合物的有效性

Protocol
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03:41 min
July 8, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

取装有重组丙型肝炎病毒或含有编码分泌荧光素酶报告基因的 RNA 的 HCV 混悬液的试管。

将

抗病毒测试化合物和溶剂添加到测试管和阴性对照管中。

测试化合物与 HCV 糖蛋白结合,使病毒灭活。

孵育后,稀释混合物以防止后续步骤中的化合物-细胞相互作用。

将

这些稀释的混合物添加到支持HCV复制的肝癌单层上。孵化。

化合物灭活的HCV不能附着在特定的细胞表面受体上,而活性HCV糖蛋白与这些受体结合,促进细胞附着。

去除未吸附的HCV。用缓冲液洗涤并加入培养基。长时间孵育。

结合的 HCV 被内化,释放病毒 RNA 并导致从细胞分泌的病毒蛋白和荧光素酶合成。

收集含荧光素酶的培养上清液。离心并向上清液中加入荧光素酶底物。

荧光素酶氧化基材,发光。

对照孔中的发光高于测试中的发光表明该化合物使病毒失活。

要开始病毒灭活测定,首先,在 96 孔板中每孔将 1 次 10 次接种到第四个细胞。将细胞与 5% 二氧化碳在 37 摄氏度下孵育过夜以进行附着。对于感染,制备高斯荧光素酶报告基因标记的丙型肝炎病毒或HCV颗粒,如文本方案中所述。

在无菌管中,将 100 微升 100 微摩尔 CHLA 或 PUG 与 100 微升 10 混合至HCV 的第四个病灶形成单元或 FFU。对于阳性对照,将 HCV 与肝素混合,终浓度为 1,000 微克/毫升。在37摄氏度下孵育三个小时。

三小时后,在室温下用9.8毫升基础培养基将病毒化合物混合物稀释50倍。然后,制备新的病毒化合物混合物,并立即在基础培养基中稀释该混合物,用于零小时孵育样品。从细胞中取出孵育培养基后,每孔加入100微升稀释的病毒药物溶液,一式三份。

该溶液现在每孔包含 10 到第二个 FFU。在 37 摄氏度和 5% 二氧化碳下孵育三个小时,以允许细胞感染病毒。孵育后,从孔中取出病毒悬液,并用200微升PBS轻轻洗涤细胞两次。

将

细胞在 100 微升基础培养基中孵育 72 小时,以进行病毒复制并将荧光素酶报告基因释放到上清液中。然后,将培养物中的上清液收集在微管中,并在4摄氏度下以17,000倍g离心5分钟,以去除细胞碎片。将 20 微升每种上清液与 50 微升高斯荧光素酶测定试剂混合,并在光度计中测量荧光素酶报告基因活性的发光。

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