Related Experiment Video
Updated: Feb 27, 2026
07:53
Proteomic Profiling of Macrophages by 2D Electrophoresis
Published on: November 4, 2014
13.4K
Differential proteomics highlights macrophage-specific responses to amorphous silica nanoparticles
Bastien Dalzon1, Catherine Aude-Garcia1, Véronique Collin-Faure1
1Laboratory of Chemistry and Biology of Metals, UMR 5249, Univ. Grenoble Alpes, CNRS, CEA, Grenoble, France. thierry.rabilloud@cea.fr.
Nanoscale
|July 4, 2017
Summary
Amorphous silica nanoparticles can cause inflammation by affecting macrophage cells. These nanoparticles alter cell structure and function, increasing macrophage sensitivity to DNA damage.
Area of Science:
- Nanotechnology
- Toxicology
- Cell Biology
Background:
- Engineered nanomaterials offer benefits but may pose risks to organisms.
- Amorphous silica nanoparticles (ASNs) are widely produced and exhibit inflammatory potential.
- ASNs selectively target macrophages, necessitating study of their cellular responses.
Purpose of the Study:
- To investigate the cellular responses of RAW264.7 murine macrophage cells and MPC11 plasma cells to subtoxic concentrations of ASNs.
- To understand the direct and indirect adverse effects of nanosilica exposure.
Main Methods:
- Utilized a combination of proteomic and targeted approaches.
- Studied responses in RAW264.7 murine macrophage cells and MPC11 plasma cells.
- Exposed cells to subtoxic concentrations of nanosilica.
Main Results:
- Documented alterations in the cellular cytoskeleton of macrophages.
- Observed changes in the phagocytic capacity and response to bacterial stimuli in macrophages.
- Discovered that ASNs increase macrophage sensitivity to DNA alkylating agents like styrene oxide, even at non-lethal doses.
Conclusions:
- ASNs impact macrophage cellular functions, including cytoskeleton, phagocytosis, and immune response.
- Nanosilica exposure sensitizes macrophages to genotoxic agents, highlighting a previously unrecognized risk.
- Further research is needed to fully elucidate the toxicological profile of ASNs.
