Assessing combinatorial strategies to multimerize libraries of single-domain antibodies

• Autor: Oliveira, Soraia S. ; Aires da Silva, Frederico ; Lourenco, Sara ; Freitas-Vieira, Acilino ; Cunha Santos, Ana Catarina ; Goncalves, Joao
• Assuntos: Animals ; antibody engineering ; avidity ; Base Sequence ; Biological and medical sciences ; Biotechnology ; Blotting, Western ; Cloning, Molecular ; Combinatorial Chemistry Techniques ; Dimerization ; Electrophoresis, Polyacrylamide Gel ; Enzyme-Linked Immunosorbent Assay ; Fundamental and applied biological sciences. Psychology ; light-chain variable domains ; linkers ; Molecular Sequence Data ; Peptide Library ; Polymerase Chain Reaction ; Protein Binding ; Rabbits ; Single-Domain Antibodies - metabolism ; Tumor Necrosis Factor-alpha - metabolism
• É parte de: Biotechnology and applied biochemistry, 2012-05, Vol.59 (3), p.193-204
• Notas: ark:/67375/WNG-M2LM1RHX-P
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• Descrição: Single‐domain antibodies (SDAs) are among the most studied and interesting antibody fragments. These molecules combine advantages of antibodies and small molecules. However, SDAs present a low efficiency of in vivo targeting because of their low binding avidity and fast clearance from blood circulation. Multimerization of SDA can overcome these drawbacks and increase their therapeutic potency. In this work, we developed and compared three strategies that allow construction of SDA dimers derived from rabbit light chains—PCR overlap, sticky PCR, and restriction/ligation. The restriction/ligation strategy proved to be the most efficient and feasible method to construct a successful library of SDA dimers. To further explore this technique, we constructed different libraries that differed in linker length between the two SDAs, and assessed its efficiency to deliver antigen‐specific SDA dimers. We efficiently increased both the molecular size and avidity of antibody fragments, increasing the possibility of these molecules to bind to their antigen. Therefore, this work describes efficient tools for therapeutic development of SDA dimers.
  
• Editor: Hoboken: Wiley Subscription Services, Inc., A Wiley Company
  
• Idioma: Inglês