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Compact Quantum Dots for Single-molecule Imaging
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Quantum dots in cell imaging and their safety issues.

Quan Xu1, Jiajia Gao1, Siyang Wang1

  • 1State Key Laboraty of Heavy Oil Processing, Beijing Key Laboratory of Biogas Upgrading Utilization, China University of Petroleum-Beijing, Beijing, 102249, China.

Journal of Materials Chemistry. B
|July 2, 2021
PubMed
Summary

Quantum dots (QDs) used in imaging can interact with vascular endothelial cells. This study reviews QD toxicity, focusing on five types, to guide future cytotoxicity evaluations.

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Area of Science:

  • Nanotechnology
  • Biomedical Imaging
  • Toxicology

Background:

  • Quantum dots (QDs) are utilized as fluorescent probes and drug tracers for in vivo imaging.
  • QDs in the bloodstream directly contact vascular endothelial cells, necessitating an understanding of their impact on cell function.

Purpose of the Study:

  • To investigate the potential effects of quantum dots on endothelial cell function.
  • To review the existing research on the toxicity of various quantum dots used in cell imaging.

Main Methods:

  • Focus on five types of quantum dots: Cadmium-containing QDs, Copper Indium Sulfide (CuInS2) QDs, black phosphorus QDs, MXene QDs, and carbon-based QDs.
  • Review of in vivo and in vitro toxicity studies for these quantum dots.

Main Results:

  • Current research on quantum dot toxicity has not yielded a definitive consensus.
  • The reviewed studies provide a basis for understanding the cytotoxicity of different QD formulations.

Conclusions:

  • Further investigation into quantum dot cytotoxicity is crucial for their safe application in biomedical imaging.
  • Understanding QD-endothelial cell interactions is essential for advancing in vivo imaging agent development.