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抗卡那霉素单克隆抗体细胞株的筛选及间接ELISA法的建立

DOI: 10.7668/hbnxb.2010.02.023, PP. 121-124

Keywords: 卡那霉素,单克隆抗体,ELISA

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Abstract:

采用碳二亚胺(EDC)法合成卡那霉素完全抗原,免疫BALB/c小鼠,通过杂交瘤技术获得3株能稳定分泌抗卡那霉素单克隆抗体的杂交瘤(5D7、6H8、7G4)。选择其中的5D7株抗体,经ELISA鉴定,细胞上清的效价达103以上,腹水效价达到5×104以上;建立了间接竞争ELISA法,通过优化,其检测限为0.5ng/mL,抗体IC50为3.7ng/mL,与妥布霉素交叉反应率为63.8%,与其他抗生素无交叉。可见ELISA具有快速、敏感、特异、简便等特点,适合于KAN残留的快速检测,具有较高的推广应用价值。

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