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.
复制标题

DOI:
10.1021/ja300690j
复制
发表时间:
2012-05-09
影响因子:
15
通讯作者:
Thompson DH
Thompson DH
中科院分区:
化学1区
文献类型:
--
作者:
Kulkarni A;DeFrees K;Hyun SH;Thompson DH

文献摘要

参考文献

被引文献

相似文献

基于单取代阳离子β-CD衍生物与聚(乙烯醇)MW27kD (PVA)主链聚合物、聚(乙二醇)MW2000 (PEG)和酸不稳定胆固醇修饰(Chol)接枝的自组装,通过酸敏感的苄基缩醛键,开发了一种新的siRNA递送载体。研究人员使用两种不同的组装方案研究了这些组分与siRNA形成纳米颗粒的能力,其中一种是在siRNA缩合之前,将悬挂的choll - pva - peg聚合物与阳离子β-CD衍生物进行预络合(方法A),另一种是在加入choll - pva - peg之前,将siRNA与阳离子β-CD衍生物进行缩合(方法B)。悬垂聚合物:氨基-β- cd:siRNA复合物形成的纳米颗粒尺寸在120 - 170 nm之间,具有略负的zeta电位。CHO-GFP细胞的细胞活力研究表明,这些材料的细胞毒性比25 kD bPEI低104倍,同时保持与bPEI和Lipofectamine 2000等基准转染试剂相当的基因沉默效率。这些结果表明,可降解的choll - pfa - peg聚合物能够在siRNA和阳离子-β-CD存在的情况下自组装,形成纳米颗粒,这是一种有效的低毒性载体,可以将siRNA货物运送到靶细胞。
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.
DOI: 10.1021/ja074597v
发表时间: 2008-04-09
影响因子: 15
作者:
Srinivasachari, Sathya;Fichter, Katye M.;Reineke, Theresa M.
通讯作者: Reineke, Theresa M.
DOI: 10.1038/nmat2444
发表时间: 2009-06
期刊: Nature materials
影响因子: 41.2
作者:
通讯作者: --
DOI: 10.1002/cmdc.200900076
发表时间: 2009-08-01
期刊: CHEMMEDCHEM
影响因子: 3.4
作者:
Liu, Xiao-xuan;Rocchi, Palma;Peng, Ling
通讯作者: Peng, Ling
DOI: 10.1016/s0378-5173(03)00301-6
发表时间: 2003-08-11
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