Pendant polymer:amino-β-cyclodextrin:siRNA guest:host nanoparticles as efficient vectors for gene silencing.
Pendant polymer:amino-β-cyclodextrin:siRNA guest:host nanoparticles as efficient vectors for gene silencing.
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DOI:
10.1021/ja300690j
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发表时间:
2012-05-09
影响因子:
15
通讯作者:
Thompson DH
中科院分区:
文献类型:
--
作者:
Kulkarni A;DeFrees K;Hyun SH;Thompson DH
A novel siRNA delivery vector has been developed, based on the self-assembly of mono-substituted cationic β-CD derivatives with a poly(vinyl alcohol)MW27kD (PVA) main chain polymer bearing poly(ethylene glycol)MW2000 (PEG) and acid-labile cholesterol-modified (Chol) grafts through an acid-sensitive benzylidene acetal linkage. These components were investigated for their ability to form nanoparticles with siRNA using two different assembly schemes, involving either precomplexation of the pendant Chol-PVA-PEG polymer with the cationic β-CD derivatives before siRNA condensation (Method A) or siRNA condensation with the cationic β-CD derivatives prior to addition of Chol-PVA-PEG to engage host:guest complexation (Method B). The pendant polymer:amino-β-CD:siRNA complexes were shown to form nanoparticles in the size range of 120 – 170 nm, with a slightly negative zeta potential. Cell viability studies in CHO-GFP cells shows that these materials have 104-fold lower cytotoxicities than 25 kD bPEI, while maintaining gene-silencing efficiencies that are comparable to benchmark transfection reagents such as bPEI and Lipofectamine 2000. These results suggest that the degradable Chol-PVA-PEG polymer is able to self assemble in the presence of siRNA and cationic-β-CD to form nanoparticles that are an effective and low-toxicity vehicle for delivering siRNA cargo to target cells.
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影响因子:
15
作者:
Srinivasachari, Sathya;Fichter, Katye M.;Reineke, Theresa M.
通讯作者:
Reineke, Theresa M.
影响因子:
41.2
作者:
通讯作者:
--
影响因子:
3.4
作者:
Liu, Xiao-xuan;Rocchi, Palma;Peng, Ling
通讯作者:
Peng, Ling
影响因子:
5.8
作者:
Romoren, K;Pedersen, S;Thu, BJ
通讯作者:
Thu, BJ
DOI:
10.1073/pnas.85.18.6949
发表时间:
1988-09-01
影响因子:
11.1
作者:
GABIZON, A;PAPAHADJOPOULOS, D
通讯作者:
PAPAHADJOPOULOS, D