目的构建噬菌体抗体库并筛选抗BP180-NC16A抗体。方法以大疱性类天疱疮(BP)患者外周血淋巴细胞为基因来源,扩增多样性的轻链和重链Fd段基因,构建Fab段表面展示的噬菌体抗体库,用BP180分子的NC16A片段为抗原对抗体库进行筛选并对筛选得...目的构建噬菌体抗体库并筛选抗BP180-NC16A抗体。方法以大疱性类天疱疮(BP)患者外周血淋巴细胞为基因来源,扩增多样性的轻链和重链Fd段基因,构建Fab段表面展示的噬菌体抗体库,用BP180分子的NC16A片段为抗原对抗体库进行筛选并对筛选得到的抗体用ELISA,W estern b lot和免疫荧光等方法进行鉴定。结果经过轻、重链基因的重组和转化,获得了库容为5×107的噬菌体抗体库。以BP180-NC16A抗原进行"亲和吸附—洗脱—扩增"淘筛,获得2株特异性抗体。结论利用噬菌体抗体库技术成功制备了抗BP180抗体,为深入研究BP自身抗体、探讨新的治疗策略奠定了基础。展开更多
THAT the bacteriophages can display human antibody fragments on their surfaces equivalent tothe mammalian immune repertoire provides a new and powerful means of making human anti-bodies for immunotherapy. This techniq...THAT the bacteriophages can display human antibody fragments on their surfaces equivalent tothe mammalian immune repertoire provides a new and powerful means of making human anti-bodies for immunotherapy. This technique combines production, selection and affinity matura-tion in numerous imaginative ways. The phage antibody display systems have an advantageover the conventional hybridoma technique in the generation of human antibody and the development of an affinity maturation process that mimics the immune system. Since the first展开更多
Objective: To select a human phage antibody against HBsAg and sequence the heavy chain and light chain gene. Methods: Human immunoglobulin combinatorial library was generated by using phage surface display expression ...Objective: To select a human phage antibody against HBsAg and sequence the heavy chain and light chain gene. Methods: Human immunoglobulin combinatorial library was generated by using phage surface display expression system, from which phage antibodies (Fab fragments ) against HBsAg were screened, and their antigenbinding activity and specificity were assayed by ELISA and competition inhibition ELISA. The heavy chain gene was seqllenced by 373A automatic DNA sequence analysis machine. Results: A human phage antibody against HBsAg was obtained. It’s heavy chain gene was whole, but it’s light chain gene was lost. Conclusion: The VH gene of the selected antibody belonged to VH I subgroup. The antibody fragment with whole heavy chain and withoutlight chain also showed strong binding activity to HBsAg.展开更多
文摘目的构建噬菌体抗体库并筛选抗BP180-NC16A抗体。方法以大疱性类天疱疮(BP)患者外周血淋巴细胞为基因来源,扩增多样性的轻链和重链Fd段基因,构建Fab段表面展示的噬菌体抗体库,用BP180分子的NC16A片段为抗原对抗体库进行筛选并对筛选得到的抗体用ELISA,W estern b lot和免疫荧光等方法进行鉴定。结果经过轻、重链基因的重组和转化,获得了库容为5×107的噬菌体抗体库。以BP180-NC16A抗原进行"亲和吸附—洗脱—扩增"淘筛,获得2株特异性抗体。结论利用噬菌体抗体库技术成功制备了抗BP180抗体,为深入研究BP自身抗体、探讨新的治疗策略奠定了基础。
文摘THAT the bacteriophages can display human antibody fragments on their surfaces equivalent tothe mammalian immune repertoire provides a new and powerful means of making human anti-bodies for immunotherapy. This technique combines production, selection and affinity matura-tion in numerous imaginative ways. The phage antibody display systems have an advantageover the conventional hybridoma technique in the generation of human antibody and the development of an affinity maturation process that mimics the immune system. Since the first
文摘Objective: To select a human phage antibody against HBsAg and sequence the heavy chain and light chain gene. Methods: Human immunoglobulin combinatorial library was generated by using phage surface display expression system, from which phage antibodies (Fab fragments ) against HBsAg were screened, and their antigenbinding activity and specificity were assayed by ELISA and competition inhibition ELISA. The heavy chain gene was seqllenced by 373A automatic DNA sequence analysis machine. Results: A human phage antibody against HBsAg was obtained. It’s heavy chain gene was whole, but it’s light chain gene was lost. Conclusion: The VH gene of the selected antibody belonged to VH I subgroup. The antibody fragment with whole heavy chain and withoutlight chain also showed strong binding activity to HBsAg.
