DNA polyplexes formed using PEGylated biodegradable hyperbranched polymers.

Abstract:

:A novel PEGylated biodegradable hyperbranched PEG-b-PDMAEMA has been synthesized. The low toxicity, small molecular weight PDMAEMA chains were crosslinked using a biodegradable disulfide-based dimethacrylate (DSDMA) agent to yield higher molecular weight hyperbranched polymers. PEG chains were linked onto the polymer surface, masking the positive charge (as shown by Zeta potential measurements) and reducing the toxicity of the polymer. The hyperbranched structures were also cleaved under reducing conditions and analyzed, confirming the expected component structures. The hyperbranched polymer was mixed with DNA and efficient binding was shown to occur through electrostatic interactions. The hyperbranched structures could be reduced easily, generating lower toxicity oligomer chains.

journal_name

Macromol Biosci

authors

Tao L,Chou WC,Tan BH,Davis TP

doi

10.1002/mabi.200900378

subject

Has Abstract

pub_date

2010-06-11 00:00:00

pages

632-7

issue

6

eissn

1616-5187

issn

1616-5195

journal_volume

10

pub_type

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