Liu, David RuchienMcGregor, Lynn Marie2014-06-062014-06-062014McGregor, Lynn Marie. 2014. Methods for the Identification of Ligand-Target Pairs from Combined Libraries of Targes and Ligands. Doctoral dissertation, Harvard University.http://dissertations.umi.com/gsas.harvard:11370http://nrs.harvard.edu/urn-3:HUL.InstRepos:12274139Advances in genome and proteome research have led to a dramatic increase in the number of macromolecular targets of interest to the life sciences. A solution-phase method to simultaneously reveal all ligand-target binding pairs from a single solution containing libraries of ligands and targets could significantly increase the efficiency and effectiveness of target-oriented screening efforts. Here, we describe interaction-dependent PCR (IDPCR), a solution-phase method to identify binding partners from combined libraries of small-molecule ligands and targets in a single experiment. Binding between DNA-linked targets and DNA-linked ligands induces formation of an extendable duplex. Extension links codes identifying the ligand and target into one selectively amplifiable DNA molecule. In a model selection, IDPCR resulted in the enrichment of DNA encoding all five known protein-ligand pairs out of 67,599 possible sequences.en-USChemistryBiochemistryDNA-encodeddrug discoveryselectionsmall moleculeThesis or Dissertation