Hydrolytic charge-reversal of PEGylated polyplexes enhances intracellular un-packaging and activity of siRNA.
Hydrolytic charge-reversal of PEGylated polyplexes enhances intracellular un-packaging and activity of siRNA.
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聚乙二醇化复合物的水解电荷反转增强了 siRNA 的细胞内解包装和活性。
DOI:
10.1002/jbm.a.35629
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Duvall,CraigL
中科院分区:
文献类型:
--
作者:
Werfel,ThomasA;Swain,Corban;Nelson,ChristopherE;Kilchrist,KameronV;Evans,BrianC;Miteva,Martina;Duvall,CraigL
Hydrolytically degrading nano‐polyplexes (HDG‐NPs) that reverse charge through conversion of tertiary amines to carboxylic acids were investigated to improve intracellular un‐packaging of siRNA and target gene silencing compared to a non‐degradable analog (non‐HDG‐NPs). Both NP types comprised reversible addition‐fragmentation chain‐transfer (RAFT) synthesized diblock copolymers of a poly(ethylene glycol) (PEG) corona‐forming block and a cationic block for nucleic acid packaging that incorporated butyl methacrylate (BMA) and either dimethylaminoethyl methacrylate (DMAEMA, non‐HDG‐NPs) or dimethylaminoethyl acrylate (DMAEA, HDG‐NPs). HDG‐NPs decreased significantly in size and released significantly more siRNA (∼40%) than non‐HDG‐NPs after 24 h in aqueous solution. While both HDG‐NPs and non‐HDG‐NPs had comparable uptake and cytotoxicity up to 150 nMsiRNA doses, HDG‐NPs achieved significantly higher target gene silencing of the model gene luciferasein vitro. High resolution FRET confocal microscopy was used to monitor the intracellular un‐packaging of siRNA. Non‐HDG‐NPs had significantly higher FRET efficiency than HDG‐NPs, indicating that siRNA delivered from HDG‐NPs was more fully un‐packaged and therefore had improved intracellular bioavailability. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 917–927, 2016.
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DOI:
--
发表时间:
1989
期刊:
Laboratory animal science
影响因子:
--
作者:
J. Wyatt;Scott Ra;Richardson Me
通讯作者:
Richardson Me
影响因子:
3.8
作者:
Linsenmeier, R A
通讯作者:
Linsenmeier, R A
DOI:
--
发表时间:
1987
期刊:
Experimental biology
影响因子:
--
作者:
M. Wolbarsht;E. Stefánsson;M. Landers
通讯作者:
M. Landers
影响因子:
3.4
作者:
R. Linsenmeier;T. K. Goldstick;Rick S. Blum;C. Enroth
通讯作者:
C. Enroth
DOI:
10.1016/0169-328x(94)90223-2
发表时间:
1994-04-01
期刊:
MOLECULAR BRAIN RESEARCH
影响因子:
--
作者:
POMPEIANO, M;PALACIOS, JM;MENGOD, G
通讯作者:
MENGOD, G