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抗木瓜凝乳蛋白酶单链抗体基因的构建、初步筛选和鉴定
Construction and identification of anti-chymopapain scFv phage display library
【摘要】 目的 :构建抗木瓜凝乳蛋白酶全套单链抗体 (scFv)噬菌体表面展示文库。方法 :从木瓜凝乳蛋白酶免疫小鼠的淋巴细胞中提取总RNA ,反转录成cDNA后 ,用抗体V区简并引物扩增全套VH 和VL 基因。经重叠延伸反应 ,装配成scFv基因 ,并将其克隆到噬粒载体pFAB5C中 ,构建scFv噬菌体抗体库。对抗体库进行亲和筛选后 ,用ELISA法鉴定抗木瓜凝乳蛋白酶的scFv。结果 :经 4轮“亲和 吸附 洗脱”的富集过程 ,得到ELISA活性较高可与木瓜凝乳蛋白酶结合的克隆。结论 :成功地构建了抗木瓜凝乳蛋白酶的scFv噬菌体展示文库 ,并筛选到与木瓜凝乳蛋白酶具有结合能力的scFv基因
【Abstract】 AIM: To construct phage display library of anti-chymopapain scFv. METHODS: VH and VL gene repertoires were amplified from splenocyte mRNA by RT-PCR and joined by a (Gly4ser)3 linker to obtain scFv genes. The scFv genes were then cloned into phagemid pFAB5C to construct phage display library. Affinity selection and ELISA were used to (identify) specific phage antibody to chymopapain. RESULTS: After 4 rounds of panning, high affinity scFv was obtained. CONCLUSION: Phage display library of anti-chymopapain scFv was successfully constructed, and scFv with binding (ability) to chymopapain was obtained.
- 【文献出处】 细胞与分子免疫学杂志 ,Journal of Cellular and Molecular Immunology , 编辑部邮箱 ,2004年06期
- 【分类号】R392.11
- 【被引频次】3
- 【下载频次】126