摘要：Monoclonal antibodies(mAbs)are widely utilized as therapeutic drugs for various diseases,such as cancer,autoimmune diseases,and infectious *** the avian-derived B cell line DT40,we previously developed an antibody display technology,namely,the ADLib system,which rapidly generates antigen-specific ***,we report the development of a human version of the ADLib system and showcase the streamlined generation and optimization of functional human *** libraries were first constructed by replacing endogenous immunoglobulin genes with designed human *** these libraries,clones producing full-length human IgGs against distinct antigens can be isolated,as exemplified by the selection of antagonistic *** advantage of avian biology,effective affinity maturation was achieved in a straightforward manner by seamless diversification of the parental clones into secondary libraries followed by single-cell sorting,quickly affording mAbs with improved affinities and ***,we demonstrate that the human ADLib system could serve as an integrative platform with unique diversity for rapid de novo generation and optimization of therapeutic or diagnostic antibody ***,our results suggest that libraries can be constructed by introducing exogenous genes into DT40 cells,indicating that the ADLib system has the potential to be applied for the rapid and effective directed evolution and optimization of proteins in various fields beyond biomedicine.