Use of micro-emulsion technology for the directed evolution of antibodies.

Use of micro-emulsion technology for the directed evolution of antibodies.
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利用微乳液技术进行抗体的定向进化。

DOI:
10.1016/j.ymeth.2012.07.007
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发表时间:
2012
期刊:
Methods (San Diego, Calif.)
影响因子:
--
通讯作者:
Kiss,MargaretM
Kiss,MargaretM
中科院分区:
--
文献类型:
--
作者:
Buhr,DianeL;Acca,FelicityE;Holland,ErikaG;Johnson,Katie;Maksymiuk,GailM;Vaill,Ada;Kay,BrianK;Weitz,DavidA;Weiner,MichaelP;Kiss,MargaretM

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Affinity reagents, such as antibodies, are needed to study protein expression patterns, sub-cellular localization, and post-translational modifications in complex mixtures and tissues. Phage Emulsion, Secretion, and Capture (ESCape) is a novel micro-emulsion technology that utilizes water-in-oil (W/O) emulsions for the identification and isolation of cells secreting phage particles that display desirable antibodies. Using this method, a large library of antibody-displaying phage will bind to beads in individual compartments. Rather than using biopanning on a large mixed population, phage micro-emulsion technology allows us to individually query clonal populations of amplified phage against the antigen. The use of emulsions to generate microdroplets has the promise of accelerating phage selection experiments by permitting fine discrimination of kinetic parameters for binding to targets. In this study, we demonstrate the ability of phage micro-emulsion technology to distinguish two scFvs with a 300-fold difference in binding affinities (100nM and 300pM, respectively). In addition, we describe the application of phage micro-emulsion technology for the selection of scFvs that are resistant to elevated temperatures.
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