Patent ID: 8853167
Filing Date: 2014-10-07
Classification: A61K,A61P,C08G,C12N

Abstract:
1. A cationic polyamino acid capable of associating with a nucleic acid, the cationic polyamino acid comprising: 1 to 20 units of one or more cationic amino acid residue(s) having a cationic group in a side chain; and a plurality of hydrophobic amino acid residues having a hydrophobic group in a side chain, wherein the cationic polyamino acid has the following formula (1): where: R R R R R R —NH—(CH —NH—(CH —NH—(CH —NH—(CH where: p1 to p4, q1 to q6, and r1 and r2 are each independently an integer of 1 to 5; R m is an integer of 5 to 80; n is an integer of 0 to m; x is an integer of 1 to 20; y is an integer of 0 to x; and z is an integer of 0 to 20, with the proviso that: 1≦x+z≦20, repeating units having the groups R each of R