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Quantitative PCR is a Valuable Tool to Monitor the Performance of DNA-Encoded Chemical Library Selections. | LitMetric

AI Article Synopsis

  • Phage-display libraries and DNA-encoded chemical libraries (DECLs) are techniques used to isolate specific binding molecules from large groups of compounds using target proteins on a solid surface.
  • While phage-display methods have established ways to quantify selection efficiency, similar methods for DECLs have been lacking.
  • This article discusses using quantitative PCR (qPCR) to assess DECL selection efficiency, showing that it can successfully evaluate a library of over 35 million compounds and helps in optimizing the selection process.

Article Abstract

Phage-display libraries and DNA-encoded chemical libraries (DECLs) represent useful tools for the isolation of specific binding molecules from large combinatorial sets of compounds. With both methods, specific binders are recovered at the end of affinity capture procedures by using target proteins of interest immobilized on a solid support. However, although the efficiency of phage-display selections is routinely quantified by counting the phage titer before and after the affinity capture step, no similar quantification procedures have been reported for the characterization of DECL selections. In this article, we describe the potential and limitations of quantitative PCR (qPCR) methods for the evaluation of selection efficiency by using a combinatorial chemical library with more than 35 million compounds. In the experimental conditions chosen for the selections, a quantification of DNA input/recovery over five orders of magnitude could be performed, revealing a successful enrichment of abundant binders, which could be confirmed by DNA sequencing. qPCR provided rapid information about the performance of selections, thus facilitating the optimization of experimental conditions.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5606288PMC
http://dx.doi.org/10.1002/cbic.201600626DOI Listing

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