Abstract
Antibodies play a pivotal role in human health and disease. The application of phage display technology represents another milestone in the attempt to gain a better understanding of human antibodies. Immunoglobulin phage display permits human monoclonal antibodies for the first time to be readily available for analysis and for therapeutic use. Recent developments in molecular biology, in particular the polymerase chain reaction, have made it possible to amplify, clone, and express human antibody fragments in prokaryotic organisms. Phagemid display vectors have a distinct advantage over conventional cell culture technology used to immortalize human antibodies, in that one may quickly survey huge immunoglobulin repertoires for an antibody of desired specificity. Dual expression of immunoglobulin variable region light and heavy chain fragments permits combinatorial shuffling and thus an increase in diversity. The development of sophisticated computer algorithms, such as LINUS, 57 that can predict the three-dimensional structure of proteins from DNA sequences will have an enormous influence on the characterization and design of human antibodies. Future advances in computer software will be needed to aid in the identification of unique antibody sequence motifs expressed during disease and in the design of antibodies with defined functional epitopes.
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