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Wide varieties of cationic nanoparticles induce defects in supported lipid bilayers

Nano Letters, ISSN: 1530-6984, Vol: 8, Issue: 2, Page: 420-424
2008
  • 522
    Citations
  • 0
    Usage
  • 366
    Captures
  • 0
    Mentions
  • 0
    Social Media
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Metrics Details

  • Citations
    522
  • Captures
    366

Article Description

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-NH , SiO -NH ), can induce disruption, including the formation of holes, membrane thinning, and/or membrane erosion, in supported lipid bilayers. © 2008 American Chemical Society.

Bibliographic Details

Pascale R. Leroueil; Stephanie A. Berry; Kristen Duthie; Gang Han; Vincent M. Rotello; Daniel Q. McNerny; James R. Baker Jr.; Bradford G. Orr; Mark M. Banaszak Holl

American Chemical Society (ACS)

Chemical Engineering; Chemistry; Materials Science; Physics and Astronomy; Engineering

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