Aggregation and Interaction of cationic nanoparticles on bacterial surfaces

• Verfasst von: Hayden, Steven C. [VerfasserIn]
• Verfasst von: Bunz, Uwe H. F. [VerfasserIn]
• Titel: Aggregation and Interaction of cationic nanoparticles on bacterial surfaces
• Verf.angabe: Steven C. Hayden, Gengxiang Zhao, Krishnendu Saha, Ronnie L. Phillips, Xiaoning Li, Oscar R. Miranda, Vincent M. Rotello, Mostafa A. El-Sayed, Ingeborg Schmidt-Krey, and Uwe H.F. Bunz
• E-Jahr: 2012
• Jahr: 25 April 2012
• Umfang: 4 S.
• Teil: volume:134
• Teil: year:2012
• Teil: number:16
• Teil: pages:6920-6923
• Teil: extent:4
• Fussnoten: Published online17 April 2012 ; Gesehen am 18.10.2018
• Titel Quelle: Enthalten in: American Chemical SocietyJournal of the American Chemical Society
• Ort Quelle: Washington, DC : ACS Publications, 1879
• Jahr Quelle: 2012
• Band/Heft Quelle: 134(2012), 16, Seite 6920-6923
• ISSN Quelle: 1520-5126
• DOI: doi:10.1021/ja301167y
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1582066868

Abstract

Cationic monolayer-protected gold nanoparticles (AuNPs) with sizes of 6 or 2 nm interact with the cell membranes of Escherichia coli (Gram−) and Bacillus subtilis (Gram+), resulting in the formation of strikingly distinct AuNP surface aggregation patterns or lysis depending upon the size of the AuNPs. The aggregation phenomena were investigated by transmission electron microscopy and UV−vis spectroscopy. Upon proteolytic treatment of the bacteria, the distinct aggregation patterns disappeared.