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Acute toxicity test of CuO nanoparticles using human mesenchymal stem cells
1Dipartimento di Ingegneria Meccanica Chimica e dei Materiali, Università degli Studi di Cagliari , Piazza d'Armi, Cagliari , Italy and.
Toxicology Mechanisms and Methods
|May 28, 2014
Summary
Copper oxide nanoparticles (CuO NPs) show high acute cytotoxicity using a new human bone marrow mesenchymal stem cell test. CuO NPs are significantly more toxic than CuO microsized particles, highlighting the need for NP safety assessments.
Area of Science:
- Nanotoxicology
- In vitro toxicology
Background:
- Standardized toxicity evaluation for nanoparticles (NPs) is lacking despite increasing human exposure risks.
- In vitro methods offer rapid, reproducible, and animal-free alternatives for toxicology research.
- A novel acute toxicity test using human bone marrow mesenchymal stem cells (hBMMSCs) has been developed.
Purpose of the Study:
- To evaluate the acute cytotoxicity of copper oxide (CuO) nanoparticles (NPs).
- To compare the toxicity of CuO NPs with CuO microsized particles using the hBMMSC assay.
Main Methods:
- Utilized a newly developed in vitro toxicity test based on human bone marrow mesenchymal stem cells (hBMMSCs).
- Assessed the acute cytotoxicity of copper oxide nanoparticles (CuO NPs) and copper oxide microsized particles.
- Determined IC50 values to quantify cytotoxicity.
Main Results:
- Copper oxide nanoparticles (CuO NPs) exhibited significant cytotoxicity across all tested concentrations.
- The IC50 value for CuO NPs was determined to be 2.5 ± 0.53 µg/ml.
- Copper oxide microsized particles showed very low cytotoxicity, with an IC50 value of 72.13 ± 16.2 µg/ml.
Conclusions:
- Copper oxide nanoparticles are significantly more cytotoxic than their microsized counterparts.
- The hBMMSC-based assay effectively differentiates the toxicity of nano- and micro-sized particles.
- This validated in vitro test provides a reliable method for assessing NP-induced cytotoxicity.
