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α-乳白蛋白单克隆抗体的制备及斑点印迹定性检测方法的建立 被引量:2

Development of monoclonal antibodies against α-lactalbumin and establishment of qualitative detection for α- lactalbumin with dot blotting assay
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摘要 以α-乳白蛋白为抗原免疫Balb/c小鼠,采用淋巴细胞杂交瘤技术制备抗α-乳白蛋白单克隆抗体;采用碳二亚胺法,并通过工艺优化,将单抗与量子点高效偶联;在此基础上,建立了基于斑点印迹技术定性检测乳制品中过敏原α-乳白蛋白的方法。结果表明:采用杂交瘤技术制备的单克隆抗体特异性好,与牛奶中其他蛋白无交叉反应;当量子点、1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(EDC)、N-羟基丁二酰亚胺(NHS)、单抗摩尔比为1∶10∶6∶4时,量子点与单抗有较好的偶联效果;以量子点标记单抗建立的斑点印迹方法可直观、快速的定性分析乳制品中过敏原α-乳白蛋白。因此,该方法具有一定的实用价值。 The monoclonal antibodies(mAbs) against bovine α-lactalbumin(α-la) were prepared by immunning Balb/c mice and the lymphocyte hybridoma technique. The mAbs were covalently conjugated with the CdSe/ ZnS quantum dots (QDs) by the carbodiimide crosslinking method,and then the coupling conditions were optimized. Furthmore,a dot blotting method based on QD-mAb conjugates was established to qualitatively detect α-La in different commercial dairy products. The results showed that the prepared mAbs had high specificity and no cross-reaction. A good coupling effect was confirmed when the molar ratio of QD,N-(3- Dimethylaminopropyl ) - N ' -ethylcarbodiimide hydrochloride (EDC), N-Hydroxysuccinimide (NHS), monoclonal antibody was 1:10:6:4. The developed method based on QD-mAb conjugates could be used to visual,rapid qualitative analyze α-La in dairy products. Accordingly,the method possesses certain practical value.
出处 《食品工业科技》 CAS CSCD 北大核心 2014年第6期185-188,共4页 Science and Technology of Food Industry
基金 国家高技术研究发展计划(863计划)(2013AA102205) 国家科技支撑计划项目(2011BAK10B03) 江西省青年科学家培养对象计划(20122BCB23006) 江西省自然科学基金资助项目(20122BAB204001)
关键词 Α-乳白蛋白 单克隆抗体 量子点 斑点印迹 定性检测 α-lactalbumin monoclonal antibody quantum dots dot blotting qualitative detection
作者简介 龙彩云(1989-),女,硕士研究生,研究方向:生物化工。 通讯联系人
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参考文献18

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