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• W2100049001 abstract "Zebrafish is an aquatic organism that can be used for high content safety screening of engineered nanomaterials (ENMs). We demonstrate, for the first time, the use of high content bright-field and fluorescence-based imaging to compare the toxicological effect of transition metal oxide (CuO, ZnO, NiO, and Co3O4) nanoparticles in zebrafish embryos and larvae. High content bright-field imaging demonstrated potent and dose-dependent hatching interference in the embryos, with the exception of Co3O4 which was relatively inert. We propose that the hatching interference was due to the shedding of Cu and Ni ions, compromising the activity of the hatching enzyme, ZHE1, similar to what we previously proposed for Zn2+. This hypothesis is based on the presence of metal-sensitive histidines in the catalytic center of this enzyme. Co-introduction of a metal ion chelator, diethylene triamine pentaacetic acid (DTPA), reversed the hatching interference of Cu, Zn, and Ni. While neither the embryos nor larvae demonstrated morphological abnormalities, high content fluorescence-based imaging demonstrated that CuO, ZnO, and NiO could induce increased expression of the heat shock protein 70:enhanced green fluorescence protein (hsp70:eGFP) in transgenic zebrafish larvae. Induction of this response by CuO required a higher nanoparticle dose than the amount leading to hatching interference. This response was also DTPA-sensitive. We demonstrate that high content imaging of embryo development, morphological abnormalities, and HSP70 expression can be used for hazard ranking and determining the dose–response relationships leading to ENM effects on the development of the zebrafish embryo." @default.
• W2100049001 created "2016-06-24" @default.
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• W2100049001 date "2011-08-25" @default.
• W2100049001 modified "2023-10-16" @default.
• W2100049001 title "High Content Screening in Zebrafish Speeds up Hazard Ranking of Transition Metal Oxide Nanoparticles" @default.
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• W2100049001 doi "https://doi.org/10.1021/nn202116p" @default.
• W2100049001 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4136441" @default.
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