Electrostatic Interactions Affect Nanoparticle-Mediated Toxicity to Gram-Negative Bacterium Pseudomonas aeruginosa PAO1

Kevin Feris, Caitlin Otto, Juliette Tinker, Denise G. Wingett, Alex Punnoose, Aaron Thurber, Madhu Kongara, Maryam Sabetian, Bonnie Quinn, Charles Hanna, David Pink

Research output: Contribution to journalArticlepeer-review

150 Scopus citations

Abstract

Nanoscale materials can have cytotoxic effects. Here we present the first combined empirical and theoretical investigation of the influence of electrostatic attraction on nanoparticle cytotoxicity. Modeling electrostatic interactions between cells and 13 nm spheres of zinc oxide nanoparticles provided insight into empirically determined variations of the minimum inhibitory concentrations between four differently charged isogenic strains of Pseudomonas aeruginosa PAO1. We conclude that controlling the electrostatic attraction between nanoparticles and their cellular targets may permit the modulation of nanoparticle cytotoxicity.

Original languageAmerican English
Pages (from-to)4429-36
Number of pages8
JournalLangmuir
Volume26
Issue number6
DOIs
StatePublished - 16 Mar 2010

Keywords

  • Hydrogen Bonding
  • Models, Theoretical
  • Nanoparticles
  • Pseudomonas aeruginosa/drug effects
  • Static Electricity

EGS Disciplines

  • Biology

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