Jump to main content
Jump to site search


Systematic toxicity investigation of graphene oxide: evaluation of assay selection, cell type, exposure period and flake size

Author affiliations

Abstract

Understanding the toxicity of nanomaterials is essential for the safe and sustainable development of new applications. This is particularly true for a nanomaterial as widely used as graphene oxide (GO), which is utilized as films for electronics, membranes for filtration, drug carriers and more. Despite this, the current literature presents conflicting results on the overall toxicity of GO. Here, the cytotoxicity of three sizes of commercially available GO was investigated on six cell lines, as values of NOAEL/LOAEL. The effectiveness of four viability assays was also evaluated. The overall toxicity of GO greatly varied between cell lines; the suspension cells showed a greater response to the GO treatment compared to the adherent cell lines. Time dependent cytotoxicity was also cell line dependent, with only one cell line demonstrating obvious dependence. The six cell lines were also tested to evaluate their response to varying GO flake sizes: the suspension/phagocytic cells showed little variation in viability, while a difference was observed for the adherent/non-phagocytic cell lines. By systematically studying the effect of dose, GO size and treatment time for the six cell lines by using commercially available GO samples, we eliminate many of the variables which may result in the conflicting reports on the cytotoxicity of GO in the literature.

Graphical abstract: Systematic toxicity investigation of graphene oxide: evaluation of assay selection, cell type, exposure period and flake size

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Oct 2017, accepted on 22 Nov 2017 and first published on 04 Dec 2017


Article type: Paper
DOI: 10.1039/C7TX00278E
Citation: Toxicol. Res., 2018, Advance Article
  •   Request permissions

    Systematic toxicity investigation of graphene oxide: evaluation of assay selection, cell type, exposure period and flake size

    V. Gies and S. Zou, Toxicol. Res., 2018, Advance Article , DOI: 10.1039/C7TX00278E

Search articles by author

Spotlight

Advertisements