The cytotoxicity of CdTe quantum dots and the relative contributions from released cadmium ions and nanoparticle properties.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 20346495.
- Also identified by DOI 10.1016/j.biomaterials.2010.02.074.
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Abstract
A systematic study was carried out on the relationship between the cytotoxicity of quantum dots (QDs) and free cadmium ions using CdCl(2) solution with known amounts of Cd(2+) as the control. We found that the CdTe QDs were more cytotoxic than CdCl(2) solutions even when the intracellular Cd(2+) concentrations were identical in HEK293 cells treated with them, implying the cytotoxicity of CdTe QDs cannot attributed solely to the toxic effect of free Cd(2+). Moreover, we discovered that the cytotoxicity of QDs was based on the concentration of total QDs ingested by cells. Our data clearly showed that specific properties of nanoparticles have an obvious influence on their cytotoxicity.
Medical subject headings
- Cadmium
- Cadmium Compounds
- Cell Survival
- Cytotoxins
- Quantum Dots
- Tellurium