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重组人干扰素α-2b中残余假单胞菌菌体蛋白定量ELISA检测方法的建立 被引量:2

Development of quantification ELISA detection method for residue Pseudomonas bacteria protein in recombinant human interferon α-2b
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摘要 目的 建立假单胞菌菌体蛋白的双抗体夹心酶联免疫吸附分析(ELISA)定量检测方法,用于重组人干扰素α-2b中残余宿主菌菌体蛋白(HCP)含量的检测。方法 采用带有不含干扰素基因空质粒的假单胞菌,按既定工艺发酵纯化并制备HCP,免疫小鼠和白兔后制备抗HCP多抗体,以抗HCP兔抗体为包被抗体,将抗HCP鼠抗体标记辣根过氧化物酶(HRP)为酶联抗体,建立双抗体夹心ELISA法,并对该方法进行验证及应用。结果 所建立的方法线性范围为2.5 - 80.0 ng/mL,相关系数R2 〉 0.98,定量限为2.5 ng/mL;检测不同浓度的加样回收样品,回收率为85 % - 115 %,变异系数均 〈 10 %;与重组人干扰素α-2b和牛血清白蛋白(BSA)均无交叉反应;检测3批供试品,准确度及重现性良好。结论 已建立假单胞菌菌体蛋白的双抗体夹心ELISA定量检测方法,该方法线性好,专属性强,灵敏度高,准确度和精密度较高,可用于重组人干扰素α-2b中HCP的质量控制。
出处 《生物医学工程与临床》 CAS 2015年第5期511-514,共4页 Biomedical Engineering and Clinical Medicine
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