Abstract:
:To minimize the cytotoxicity of poly (2-(dimethylamino) ethyl methacrylate) (PDMAEMA) as a gene delivery vector, we synthesized PEGylated PDMAEMA by atom transfer radical polymerization (ATRP). Here we report its effects on transfection efficiency in vitro delivered with a GFP expression plasmid and immunogenicity in vivo after complexed with a HIV gag gene DNA vaccine. mPEG(113)-b-PDMAEMA(94) was efficient in condensing DNA and formed polyplexes with an average diameter of about 150 nm. The in vitro transfection experiments demonstrated that PEGylation dramatically decreased the cytotoxicity at the N/P ratios above 30, although the transfection efficiency in vitro was reduced. Interestingly, mice in vivo vaccination study clearly showed that PEGylated PDMAEMA used as DNA delivery vector significantly improved the prime effect of DNA vaccine through intranasal administration. Importantly, PEGylated PDMAEMA was further proved its ability to induce cytokines production by murine macrophages. Overall, mPEG-b-PDMAEMA can be used as an efficient DNA vaccine vector which enhances adaptive immune responses by activating innate immunity.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Qiao Y,Huang Y,Qiu C,Yue X,Deng L,Wan Y,Xing J,Zhang C,Yuan S,Dong A,Xu Jdoi
10.1016/j.biomaterials.2009.09.032subject
Has Abstractpub_date
2010-01-01 00:00:00pages
115-23issue
1eissn
0142-9612issn
1878-5905pii
S0142-9612(09)00962-4journal_volume
31pub_type
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