Cationic Comb-Type Copolymers for Boosting DNA-Fueled Nanomachines

For the better applications and developments of DNA nanomachines, their responding kinetics, output, and sequence-selectivity need to be improved. Furthermore, the DNA nanomachines currently have several limitations in operating conditions. Here we show that a simple addition of a cationic comb-type...

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Bibliographic Details
Published in:Nano letters 2007-01, Vol.7 (1), p.172-178
Main Authors: Choi, Sung Won, Makita, Naoki, Inoue, Satoru, Lesoil, Charles, Yamayoshi, Asako, Kano, Arihiro, Akaike, Toshihiro, Maruyama, Atsushi
Format: Article
Language:English
Subjects:
Base Sequence
Cations
Dextrans - chemistry
DNA - chemistry
Kinetics
Nanostructures
Polylysine - chemistry
Sodium Chloride - chemistry
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Summary:For the better applications and developments of DNA nanomachines, their responding kinetics, output, and sequence-selectivity need to be improved. Furthermore, the DNA nanomachines currently have several limitations in operating conditions. Here we show that a simple addition of a cationic comb-type copolymer, poly(l-lysine)-graft-dextran, produces the robust and quick responses of DNA nanomachines under moderate conditions including physiologically relevant conditions even at very low strand concentrations (nanomoles per liter range) through hybrid stabilization and DNA strand exchange acceleration.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl0626232