METHOD FOR SCREENING NUCLEIC ACID LIGAND

摘要

Provided is a method for screening a library of candidate for a nucleic acid ligand. The method includes the steps of: (a) preparing a library of candidate of nucleic acid ligands; (b) contacting, under the absence of a target substance, the library with a supporting member binding to at least one of conserved sequence domains included in the ligand, and then separating and removing a ligand which does not form an intermolecular duplex; and (c) dissociating the intermolecular duplex by contacting, under the presence of the target substance, the target substance with the remaining ligand forming the intermolecular duplex obtained in step (b), and then separating and collecting a ligand having a specific secondary structure formed by the binding to the target substance, wherein the method includes at least one time of step (b) and at least one time of step (c).