Functional molecule and manufacturing method therefor

Abstract

A novel method for efficiently manufacturing a functional molecule with affinity for a target substance is provided along with a functional molecule manufactured by this method. The method for manufacturing a functional molecule includes binding, to a resin, a specific substance having a cleavable linker which is a site that is cleavable under a specific condition to prepare a specific-substance-bound resin, treating this specific-substance-bound resin with a solution comprising functional molecule candidates, and then cleaving the cleavable linker under the specific condition to select a functional molecule which has interacted specifically with the specific substance.

1 . A method for manufacturing a functional molecule, comprising: 
 binding, to a resin, a specific substance having a cleavable linker which is a site that is cleavable under a specific condition to prepare a specific-substance-bound resin;    treating said specific-substance-bound resin with a solution comprising functional molecule candidates; and    cleaving said cleavable linker under said specific condition and selecting a functional molecule which has interacted specifically with said specific substance.    
   
   
       2 . The manufacturing method according to  claim 1 , wherein said specific substance is derived from at least one type of substance selected from proteins, lipoproteins, glycoproteins, polypeptides, lipids, polysaccharides, lipopolysaccharides, nucleic acids and drugs.  
   
   
       3 . The manufacturing method according to  claim 2 , wherein said specific substance is derived from a protein.  
   
   
       4 . The manufacturing method according to  claim 1 , wherein said functional molecule is a nucleic acid or modified nucleic acid.  
   
   
       5 . The manufacturing method according to  claim 1 , wherein said functional molecule is a modified nucleotide n-mer (n≧2) comprising a modified nucleoside having a substituent group introduced into a nucleoside constituting a nucleic acid.  
   
   
       6 . The manufacturing method according to  claim 5 , wherein said functional molecule can be transformed into a nucleic acid when said substituent group is removed by chemical treatment.  
   
   
       7 . The manufacturing method according to  claim 6 , wherein said chemical treatment is alkali treatment.  
   
   
       8 . The manufacturing method according to  claim 1 , wherein said cleavable linker is cleavable at 50° C. or less and in the pH range of 6.0 to 9.0.  
   
   
       9 . The manufacturing method according to  claim 1 , wherein said cleavable linker has a disulfide bond or vicinal diol bond or is cleavable by light, or is a nucleic acid sequence cleavable by a restriction enzyme, or is an amino acid sequence cleavable by an enzyme.  
   
   
       10 . A functional molecule obtained by the method according to  claim 1 .  
   
   
       11 . A functional molecule obtained by the method according to  claim 2 .  
   
   
       12 . A functional molecule obtained by the method according to  claim 3 .  
   
   
       13 . A functional molecule obtained by the method according to  claim 4 .  
   
   
       14 . A functional molecule obtained by the method according to  claim 5 .  
   
   
       15 . A functional molecule obtained by the method according to  claim 6 .  
   
   
       16 . A functional molecule obtained by the method according to  claim 7 .  
   
   
       17 . A functional molecule obtained by the method according to  claim 8 .  
   
   
       18 . A functional molecule obtained by the method according to  claim 9.