Chapter title |
Rapid Selection of High-Affinity Antibody scFv Fragments Using Ribosome Display
|
---|---|
Chapter number | 13 |
Book title |
Antibody Engineering
|
Published in |
Methods in molecular biology, September 2018
|
DOI | 10.1007/978-1-4939-8648-4_13 |
Pubmed ID | |
Book ISBNs |
978-1-4939-8647-7, 978-1-4939-8648-4
|
Authors |
Birgit Dreier, Andreas Plückthun, Dreier, Birgit, Plückthun, Andreas |
Abstract |
Ribosome display has proven to be a powerful in vitro selection and evolution method for generating high-affinity binders from libraries of folded proteins. It works entirely in vitro, and this has two important consequences. First, since no transformation of any cells is required, libraries with much greater diversity can be handled than with most other techniques. Second, since a library does not have to be cloned and transformed, it is very convenient to introduce random errors in the library by PCR-based methods and select improved binders. Thus, a true directed evolution, an iteration between randomization and selection over several generations, can be conveniently carried out, e.g., for affinity maturation, either on a given clone or on the whole library. Ribosome display has been successfully applied to antibody single-chain Fv fragments (scFv), which can be selected not only for specificity but also for stability and catalytic activity. High-affinity binders with new target specificity can be obtained from highly diverse libraries in only a few selection rounds. In this protocol, the selection from the library and the process of affinity maturation and off-rate selection are explained in detail. |
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