Synthesis of Statistical Copolymers Containing Multiple Functional Peptides for Nucleic Acid Delivery

被引:36
作者
Johnson, Russell N. [1 ]
Burke, Rob S. [1 ]
Convertine, Anthony J. [1 ]
Hoffman, Allan S. [1 ]
Stayton, Patrick S. [1 ]
Pun, Suzie H. [1 ]
机构
[1] Univ Washington, Dept Bioengn, Seattle, WA 98195 USA
关键词
SIDE-CHAIN POLYMERS; TRANSFER RADICAL POLYMERIZATION; GENE DELIVERY; METHACRYLAMIDE; COMPLEXES; BEHAVIOR; BLOOD; RAFT;
D O I
10.1021/bm100806h
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Our report describes RAFT copolymerization of multiple species of active peptide monomers with N-(2-hydroxypropyl(methacrylamide) (HPMA) under aqueous conditions. Resulting statistical copolymers are narrowly disperse with highly controlled molecular weight and composition. Side-chain peptide copolymers were synthesized using a DNA condensing peptide (K-12), and an endosomal escape peptide (K6H5) that had been modified with an aminohexanoic linker and capped with methacrylamide vinyl on the NI-I terminus. Copolymers of HMPA-co-K-12 and HPMA-co-K-12-co-K6H5 efficiently condensed DNA into small particles that maintain size stability even in 150 mM salt solutions. With increasing peptide content, the peptide-based polymers demonstrated gene delivery efficiencies to HeLa cells that were comparable to branched polyethylenimine.
引用
收藏
页码:3007 / 3013
页数:7
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