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Updated: Jun 13, 2026

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Published on: March 8, 2024
Interaction between nanoparticles and cytokine proteins: impact on protein and particle functionality
David M Brown1, Claire Dickson, Paul Duncan
1School of Life Sciences, Edinburgh Napier University, 10 Colinton Road, Edinburgh, EH10 5DT, UK.
Nanoparticle-protein interactions can alter both particle and protein functions. Smaller carbon black nanoparticles (14 nm) adsorbed more proteins and increased intracellular calcium more than larger ones (260 nm).
Area of Science:
- Materials Science
- Toxicology
- Biochemistry
Background:
- Nanomaterials offer unique properties but pose unknown health risks.
- Understanding nanoparticle (NP) interactions with biological molecules is crucial for safety assessments.
Purpose of the Study:
- To investigate if NPs adsorb proteins.
- To determine if NP-protein interactions affect NP and protein functions.
Main Methods:
- Exposure of A549 epithelial cells to 14 nm and 260 nm carbon black (CB) nanoparticles.
- Measurement of protein adsorption (IL-8, TNF-alpha) and cellular responses (intracellular calcium, ICAM-1 expression).
Main Results:
- 14 nm CB adsorbed significantly more cytokines (IL-8, TNF-alpha) than 260 nm CB.
- 14 nm CB increased intracellular calcium levels more than 260 nm CB.
- TNF-alpha coated 260 nm CB increased ICAM-1 expression, while TNF-alpha bound to 14 nm CB did not, suggesting inhibited protein activity.
Conclusions:
- Nanoparticle-protein interactions can decrease both protein function and nanoparticle activity.
- Particle size influences protein adsorption and biological effects.
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