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Chinese Journal of Microbiology and Immunology ; (12): 168-172, 2011.
Article in Chinese | WPRIM | ID: wpr-382860

ABSTRACT

Objective To isolate specific humanized anti-D-dimer scFv(single chain Fv) antibody from scFv phage libraries. Methods Isolate anti-D-dimer positive clones from Tomlinson I + J phage libraries by three rounds of panuing, then sequence monoclonal genes by bideoxy-mediated chain termination and express soluble scFv antibody; Pick out anti-D-dimer antibodies with high specificity and affinity by ELISA.Results After three rounds of selection from human scFv phage libraries Tomlinson I and J, 38 monclonal specific anti-D-dimer scFv fragments were selected. By polyclonal and monoclonal phage ELISA and gene sequencing, 20 different full-length monoclonal scFv phages were identified, the result of soluble scFv ELISA showed that 20 full-length monoclonal scFv were expressed smoothly. According to the result of soluble scFv ELISA, in 5 scFv antibodies with high value of A450 selected, 3 scFv antibody fragments showed high specific and affinity. Conclusion Antibody phage display was an effective, rapid method to isolate anti-D-dimer antibodies with high specificity and affinity.

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