Moon S.A.,Ewha Womans University |
Ki M.K.,Ewha Womans University |
Lee S.,Young In Frontier |
Hong M.-L.,Young In Frontier |
And 5 more authors.
Molecules and Cells | Year: 2011
Target-specific antibodies can be rapidly enriched and identified from an antibody library using phage display. Large, naïve antibody libraries derived from synthetic or unimmunized sources can yield antibodies against virtually any antigen, whereas libraries from immunized sources tend to be smaller and are used exclusively against the antigen of immunization. In this study, 25 scFv libraries made from the spleens of immunized rabbits, each with a size ranging from 108 to higher than 109, were combined into a single large library with > 1010 individual clones. Panning of this combined library yielded target-specific rabbit scFv clones against many non-immunizing antigens, including proteins, peptides, and a small molecule. Notably, specific scFv clones against a rabbit self-antigen (rabbit serum albumin) and a phosphorylated protein (epidermal growth factor receptor pTyr1173) could be isolated from the library. These results suggest that the immune library contained a significant number of unimmunized clones and that a sufficiently large immune library can be utilized similarly to a naïve library, i.e., against various non-immunizing antigens to yield specific antibodies. © 2011 The Korean Society for Molecular and Cellular Biology and Springer Netherlands.