共 44 条
Wide varieties of cationic nanoparticles induce defects in supported lipid bilayers
被引:473
作者:
Leroueil, Pascale R.
[1
,4
]
Berry, Stephanie A.
[2
,4
]
Duthie, Kristen
[1
,2
,4
]
Han, Gang
[5
]
Rotello, Vincent M.
[5
]
McNerny, Daniel Q.
[3
,4
]
Baker, James R., Jr.
[4
]
Orr, Bradford G.
[2
,4
]
Holl, Mark M. Banaszak
[1
,4
]
机构:
[1] Univ Michigan, Dept Chem, Ann Arbor, MI 48019 USA
[2] Univ Michigan, Dept Phys, Ann Arbor, MI 48019 USA
[3] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48019 USA
[4] Univ Michigan, Michigan Nanotechnol Inst Med & Biol Sci, Ann Arbor, MI 48019 USA
[5] Univ Massachusetts, Dept Chem, Amherst, MA 01003 USA
来源:
关键词:
D O I:
10.1021/nl0722929
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Nanoparticles with widely varying physical properties and origins (spherical versus irregular, synthetic versus biological, organic versus inorganic, flexible versus rigid, small versus large) have been previously noted to translocate across the cell plasma membrane. We have employed atomic force microscopy to determine if the physical disruption of lipid membranes, formation of holes and/or thinned regions, is a common mechanism of interaction between these nanoparticles and lipids. It was found that a wide variety of nanoparticles, including a cell penetrating pepide (MSI-78), a protein (TAT), polycationic polymers (PAMAM dendrimers, pentanol-core PAMAM dendrons, polyethyleneimine, and diethylaminoethyl-dextran), and two inorganic particles (Au-NH2, SiO2-NH2), can induce disruption, including the formation of holes, membrane thinning, and/or membrane erosion, in supported lipid bilayers.
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页码:420 / 424
页数:5
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