Discovery of diverse and functional antibodies from large human repertoire antibody libraries.

Schwimmer LJ, Huang B, Giang H, Cotter RL, Chemla-Vogel DS, Dy FV, Tam EM, Zhang F, Toy P, Bohmann DJ, Watson SR, Beaber JW, Reddy N, Kuan HF, Bedinger DH, Rondon IJ.
Journal   J Immunol Methods
Species  
Analytes Measured   Akt
Matrix Tested   Cell lysates
Year   2013
Volume  
Page Numbers  
Application   Phosphoproteins
Abstract
Phage display antibody libraries have a proven track record for the discovery of therapeutic human antibodies, increasing the demand for large and diverse phage antibody libraries for the discovery of new therapeutics. We have constructed naïve antibody phage display libraries in both Fab and scFv formats, with each library having more than 250billion clones that encompass the human antibody repertoire. These libraries show high fidelity in open reading frame and expression percentages, and their V-gene family distribution, VH-CDR3 length and amino acid usage mirror the natural diversity of human antibodies. Both the Fab and scFv libraries show robust sequence diversity in target-specific binders and differential V-gene usage for each target tested, supporting the use of libraries that utilize multiple display formats and V-gene utilization to maximize antibody-binding diversity. For each of the targets, clones with picomolar affinities were identified from at least one of the libraries and for the two targets assessed for activity, functional antibodies were identified from both libraries.

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