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抗CD5单链抗体的基因构建、蛋白纯化及活性鉴定
Authors
林晓思
王生育
许健
颜江华
Publication date
20 August 2011
Publisher
Abstract
目的构建高表达的抗CD5单链抗体(scFv anti-CD5)工程菌,为开展以抗CD5单链抗体为构件的肿瘤免疫治疗研究奠定基础。方法从Genbank中获得抗CD5单克隆抗体H65的重链可变区(VH)和轻链可变区(VL)的基因序列,用连接肽的编码序列连接,用重叠PCR技术获得目的基因,酶切后插入pET22b(+)构成重组质粒。测序正确的重组质粒转入E.coliBL21(DE3)诱导表达,产物经Ni-NTA柱纯化后复性,流式细胞术和Western blot-ting检测活性。结果获得序列正确的重组质粒,工程菌表达量高,产物复性后具有识别CD5抗原的活性。结论成功构建了高表达scFv anti-CD5的工程菌,为scFv anti-CD5的应用奠定了基础
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Last time updated on 16/06/2016