Osmotic Shock-Triggered Assembly of Highly Charged, Nanoparticle-Supported Membranes.
Osmotic Shock-Triggered Assembly of Highly Charged, Nanoparticle-Supported Membranes.
复制标题
渗透压冲击触发高电荷纳米颗粒支撑膜的组装。
作者:
Peter J. Chung;H. Hwang;K. Dasbiswas;Alessandra Leong;Ka Yee C. Lee
Spherical nanoparticle-supported lipid bilayers (SSLBs) combine precision nanoparticle engineering with biocompatible interfaces for various applications, ranging from drug delivery platforms to structural probes for membrane proteins. Although the bulk, spontaneous assembly of vesicles and larger silica nanoparticles (>100 nm) robustly yields SSLBs, it will only occur with low charge density vesicles for smaller nanoparticles (<100 nm), a fundamental barrier in increasing SSLB utility and efficacy. Here, through whole mount and cryogenic transmission electron microscopy, we demonstrate that mixing osmotically loaded vesicles with smaller nanoparticles robustly drives the formation of SSLBs with high membrane charge density (up to 60% anionic lipid or 50% cationic lipid). We show that the osmolyte load necessary for SSLB formation is primarily a function of absolute membrane charge density and is not lipid headgroup-dependent, providing a generalizable, tunable approach toward bulk production of highly curved and charged SSLBs with various membrane compositions.
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影响因子:
38.3
作者:
通讯作者:
--
影响因子:
3.4
作者:
Lin, AJ;Slack, NL;Safinya, CR
通讯作者:
Safinya, CR
影响因子:
15
作者:
Fu R;Gill RL Jr;Kim EY;Briley NE;Tyndall ER;Xu J;Li C;Ramamurthi KS;Flanagan JM;Tian F
通讯作者:
Tian F
影响因子:
15
作者:
Liu J;Stace-Naughton A;Jiang X;Brinker CJ
通讯作者:
Brinker CJ
DOI:
10.1016/0005-2736(93)90319-u
发表时间:
1993-04
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
D. Zhelev;David C. Needham
通讯作者:
D. Zhelev;David C. Needham