Nanocubes of indium oxide induce cytotoxicity and apoptosis through oxidative stress in human lung epithelial cells

Colloids and Surfaces. B, Biointerfaces
Maqusood AhamedAli Aldalbahi

Abstract

The demand for semiconductor indium oxide (In2O3) nanocrystals is increasing because of their diverse applications, including in biomedicine. However, there is a scarcity of studies on the biological interaction of indium oxide nanocrystals. Here, we explored the underlying mechanisms of toxicity induced by indium oxide nanocubes in human lung epithelial (A549) cells. Prepared indium oxide nanocubes were crystalline with an average size of 21nm. Biointeraction studies have shown that indium oxide nanocubes induce cell viability reduction and cell membrane damage in a dose- and time-dependent manner. Indium oxide nanocubes were also found to induce reactive oxygen species (ROS) generation, glutathione depletion and lower activity of superoxide oxide dismutase. Further, indium oxide nanocubes induced a mitochondrial membrane potential loss and altered the mRNA expression levels of apoptotic genes (p53, bax, bcl-2, CASP3 & CASP9). The activities of apoptotic enzymes (caspase-3 and -9) were also higher in indium oxide nanocube-treated cells. Finally, we observed that the cytotoxicity and apoptosis induction of indium oxide nanocubes were efficiently prevented by N-acetyl-cysteine. We believe that this is the first report suggesting...Continue Reading

Citations

Jul 19, 2020·Reviews on Environmental Health·Abbas MohammadipourAlireza Ebrahimzadeh Bideskan
Mar 20, 2018·Analytical and Bioanalytical Chemistry·Rui ChenChunying Chen
Aug 28, 2020·Frontiers in Microbiology·Lirong BaoJianxun Sun
Jan 5, 2021·Environmental Science and Pollution Research International·Maqusood AhamedHisham Abdulaziz Alhadlaq

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