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Nanomaterial characterization: Understanding nano-bio interactions.

Bengt Fadeel1

  • 1Division of Molecular Toxicology, Institute of Environmental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden.

Biochemical and Biophysical Research Communications
|November 7, 2022
PubMed
Summary
This summary is machine-generated.

Nanomaterials change dynamically in biological systems. Studying these biotransformations is crucial for accurate nanomaterial characterization and safety assessment, presenting a significant challenge.

Keywords:
BiotransformationCharacterizationNanosafetySpectroscopySynchrotron radiation

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Area of Science:

  • Nanoscience and Nanotechnology
  • Toxicology
  • Materials Science

Background:

  • Significant advancements have been made in understanding nanomaterial biological interactions over the last decade.
  • Current characterization methods typically analyze nanomaterials in their as-synthesized state, not their dynamic biological state.
  • Nanomaterials are increasingly recognized as dynamic entities whose behavior changes within biological environments.

Purpose of the Study:

  • To highlight the necessity of studying nanomaterial biotransformation for accurate characterization.
  • To emphasize the challenges in in situ characterization of dynamic nanomaterial changes within living systems.
  • To advocate for interdisciplinary collaboration between material scientists and toxicologists.

Main Methods:

  • This study is a conceptual review and position paper, not based on experimental data.
  • It synthesizes current knowledge on nanomaterial behavior in biological systems.
  • It identifies challenges in real-time characterization of nanomaterials during biotransformation.

Main Results:

  • Nanomaterials undergo significant dynamic changes in biological environments, including corona formation, dissolution, and degradation.
  • In situ characterization of these dynamic processes within living systems is currently a major hurdle.
  • Existing characterization techniques often fail to capture the true biological state of nanomaterials.

Conclusions:

  • Nanomaterials must be studied and regulated considering their dynamic nature and biotransformation.
  • Accurate nanosafety assessment requires methods capable of in situ characterization of nanomaterials in biological milieus.
  • Collaboration between material scientists and toxicologists is essential to overcome current characterization challenges.