重组人3型腺病毒六邻体蛋白单克隆抗体的制备及鉴定

目的 制备抗人3型腺病毒六邻体蛋白的单克隆抗体并对单抗进行鉴定.方法 用纯化的重组六邻体蛋白免疫BALB/c小鼠.取其脾细胞与骨髓瘤细胞融合.经ELISA间接法筛选和克隆化培养,获得4株分泌抗腺病毒六邻体蛋白单克隆抗体的杂交瘤细胞,纯化其腹水获得单抗.使用ELISA、Western blot和中和实验等方法鉴定单抗的敏感性、特异性以及中和活性.结果 ELISA和免疫印迹结果表明这4株单抗与腺病毒六邻体蛋白可以特异性结合.而且,4C6株单抗具有中和活性.结论 获得了4个单抗为腺病毒六邻体蛋白的单克隆抗体,可用于3型腺病毒的早期诊断和药物治疗的研究.

Preparation and characterization of specific monoclonal antibodies against hexon of HAdV 3

OBJECTIVE: To obtain the monoclonal antibody against hexon protein of human adenovirus. METHODS: BALB/c mice were immunized with purified recombinant hexon protein, and the spleen cells of the mice were isolated and fused with myloma cells. Four hybridoma cell strains were screened by indirect ELISA and cultured, and the sensitivity, specificity and virus neutralizing activity were analyzed with ELISA, Western blotting and neutralizing test. RESULTS: The mouse ascites produced by these hybridoma cells contained specific monoclonal antibodies against hexon protein of human adenovirus as identified by ELISA and Western blot, and the antibody generated by 4C6 strain showed human adenovirus type 3-neutralizing activity. CONCLUSION: The monoclonal antibodies against hexon protein with high specificity have been successfully obtained, and these antibodies can be useful in developing assays for early diagnosis of HAdV3 infection and also in study of therapeutic drugs of the infection.