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An All-on-chip Method for Rapid Neutrophil Chemotaxis Analysis Directly from a Drop of Blood
Published on: June 23, 2017
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TiO2 nanoparticles can selectively bind CXCL8 impacting on neutrophil chemotaxis
1School of Dentistry, University of Alberta, Edmonton, T6G 1C9, Canada.oaddison@ualberta.ca.
European Cells & Materials
|January 20, 2018
Summary
Titanium dioxide nanoparticles (TiO2 NPs) bind to the inflammatory cytokine CXCL8, affecting its quantification and function. This interaction may impair immune responses near titanium implants.
Area of Science:
- Biomaterials Science
- Immunology
- Nanotechnology
Background:
- Titanium dioxide (TiO2) nanoparticles are found near titanium implants.
- Inflammatory cytokines, like CXCL8, play crucial roles in immune responses.
Purpose of the Study:
- To investigate the interaction between TiO2 nanoparticles and the pro-inflammatory chemokine CXCL8.
- To assess the clinical relevance of this interaction on immune function and diagnostic assays.
Main Methods:
- In vitro binding assays using protein gel electrophoresis.
- Enzyme-Linked Immunosorbent Assay (ELISA) to quantify CXCL8 levels.
- Chemotaxis assays to evaluate CXCL8's functional activity.
Main Results:
- TiO2 nanoparticles bind to CXCL8 in a dose-dependent manner.
- This binding interferes with CXCL8 quantification by ELISA.
- TiO2 nanoparticles inactivate the chemoattractant properties of CXCL8.
Conclusions:
- The interaction between TiO2 nanoparticles and CXCL8 is clinically relevant.
- ELISA may not accurately quantify CXCL8 in the presence of TiO2 nanoparticles.
- This interaction could potentially hinder neutrophil chemotaxis and immune response in tissues with TiO2 NPs.
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