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Antibody Phage Display: Overview of a Powerful Technology that Has Quickly Translated to the Clinic

 Last Update: 2021-02-18
 Source: Internet
 Author: User

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antigen antibody reaction

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Antibody-based immunologic reagents are useful for identifying, isolating, or eliminating cells with particular characteristics related to different diseases. Phage display is a highly valuable technique for antibody selection related to this purpose. In brief, a diverse group of antibody genes prepared from a patient or generated in vitro are inserted into a phagemid vector or the phage genome so that when the protein is expressed, it becomes anchored on the surface of the phage by fusion to a coat protein. A diverse library of recombinant antibodies is generated in this way and can then be exposed or panned on the antigen of interest, typically, this being a molecule associated with a particular pathological condition. Phage that carry proteins or peptides bind preferentially to the target and can thus be isolated from the library. The viruses that are recovered in this way also carry the gene for the binding moiety facilitating its over-expression or manipulation. Recent reviews highlight key milestones in the development of antibody libraries and their screening by phage display, and the impact of these technologies on drug discovery seems assured.

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