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Article
The Influences of Cell Type and ZnO Nanoparticle Size on Immune Cell Cytotoxicity and Cytokine Induction
Nanoscale Research Letters
  • Cory Hanley, Boise State University
  • Aaron Thurber, Boise State University
  • Charles Hanna, Boise State University
  • Alex Punnoose, Boise State University
  • Jianhui Zhang, Boise State University
  • Denise G. Wingett, Boise State University
Document Type
Article
Publication Date
9-16-2009
DOI
http://dx.doi.org/10.1007/s11671-009-9413-8
Disciplines
Abstract

Nanotechnology represents a new and enabling platform that promises to provide a range of innovative technologies for biological applications. ZnO nanoparticles of controlled size were synthesized, and their cytotoxicity towards different human immune cells evaluated. A differential cytotoxic response between human immune cell subsets was observed, with lymphocytes being the most resistant and monocytes being the most susceptible to ZnO nanoparticle-induced toxicity. Significant differences were also observed between previously activated memory lymphocytes and naive lymphocytes, indicating a relationship between cell-cycle potential and nanoparticle susceptibility. Mechanisms of toxicity involve the generation of reactive oxygen species, with monocytes displaying the highest levels, and the degree of cytotoxicity dependent on the extent of nanoparticle interactions with cellular membranes. An inverse relationship between nanoparticle size and cytotoxicity, as well as nanoparticle size and reactive oxygen species production was observed. In addition, ZnO nanoparticles induce the production of the proinflammatory cytokines, IFN-y, TNF-α and IL-12, at concentrations below those causing appreciable cell death. Collectively, these results underscore the need for careful evaluation of ZnO nanoparticle effects across a spectrum of relevant cell types when considering their use for potential new nanotechnology-based biological applications.

Copyright Statement

This is an author-produced, peer-reviewed version of this article. The final, definitive version of this document can be found online at Nanoscale Research Letters, published by Springer. Copyright restrictions may apply. DOI: 10.1007/s11671-009-9413-8

Citation Information
Cory Hanley, Aaron Thurber, Charles Hanna, Alex Punnoose, et al.. "The Influences of Cell Type and ZnO Nanoparticle Size on Immune Cell Cytotoxicity and Cytokine Induction" Nanoscale Research Letters (2009)
Available at: http://works.bepress.com/denise_wingett/3/