Microscopy and tunable resistive pulse sensing characterization of the swelling of pH-responsive, polymeric expansile nanoparticles.

Microscopy and tunable resistive pulse sensing characterization of the swelling of pH-responsive, polymeric expansile nanoparticles.
复制标题

DOI:
10.1039/c3nr00114h
复制
发表时间:
2013-04-21
期刊:
影响因子:
6.7
通讯作者:
Grinstaff MW
Grinstaff MW
中科院分区:
材料科学2区
文献类型:
--
作者:
Colby AH;Colson YL;Grinstaff MW

文献摘要

参考文献

被引文献

相似文献

聚合物可膨胀纳米粒子 (eNP) 通过遇水膨胀并直径膨胀 2-10 倍来响应弱酸性环境,代表了一种新的响应性药物输送系统。在这里,我们使用多种技术来表征 eNP 膨胀的 pH 和时间依赖性,因为这是观察到的 eNP 体外和体内性能的关键特性。结果表明,在 pH 5.0 下,eNP 体积 (>350 X) 发生显着变化,如使用扫描电子显微镜 (SEM)、传统透射电子显微镜 (TEM)、冷冻断裂透射电子显微镜 (ff-TEM)、荧光显微镜和基于纳米孔的新型表征技术 qNano,该技术使用可调电阻脉冲传感测量单个颗粒尺寸以及原位颗粒总体浓度。 eNP 膨胀在几天内以连续但不均匀的方式发生,并且与 pH 值相关。
Polymeric expansile nanoparticles (eNPs) that respond to a mildly acidic environment by swelling with water and expanding 2–10 X in diameter represent a new responsive drug delivery system. Here, we use a variety of techniques to characterize the pH- and time-dependence of eNP swelling as this is a key property responsible for the observed in vitro and in vivo performance of eNPs. Results demonstrate a significant change in eNP volume (>350 X) at pH 5.0 as seen using: scanning electron microscopy (SEM), conventional transmission electron microscopy (TEM), freeze-fracture transmission electron microscopy (ff-TEM), fluorescence microscopy, and a new nanopore based characterization technology, the qNano, which measures both individual particle size as well as overall particle concentration in situ using tunable resistive pulse sensing. eNP swelling occurs in a continuous and yet heterogeneous manner over several days and is pH dependent.
DOI: 10.1016/j.biomaterials.2012.11.038
发表时间: 2013-02
期刊: BIOMATERIALS
影响因子: 14
作者:
Liu, Rong;Gilmore, Denis M.;Zubris, Kimberly Ann V.;Xu, Xiaoyin;Catalano, Paul J.;Padera, Robert F.;Grinstaff, Mark W.;Colson, Yolonda L.
通讯作者: Colson, Yolonda L.
DOI: 10.1586/erm.09.15
发表时间: 2009-05
影响因子: 5.1
作者:
Lü JM;Wang X;Marin-Muller C;Wang H;Lin PH;Yao Q;Chen C
通讯作者: Chen C
DOI: 10.1021/ja807416t
发表时间: 2009-02-25
影响因子: 15
作者:
Griset, Aaron P.;Walpole, Joseph;Grinstaff, Mark W.
通讯作者: Grinstaff, Mark W.
DOI: 10.1016/j.biomaterials.2010.09.059
发表时间: 2011-01-01
期刊: BIOMATERIALS
影响因子: 14
作者:
Colson, Yolonda L.;Liu, Rong;Grinstaff, Mark W.
通讯作者: Grinstaff, Mark W.
DOI: 10.1246/cl.2012.1134
发表时间: 2012-10-05
期刊: CHEMISTRY LETTERS
影响因子: 1.6
作者:
Kozak, Darby;Anderson, Will;Trau, Matt
通讯作者: Trau, Matt