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Differential proteomics highlights macrophage-specific responses to amorphous silica nanoparticles

Abstract

The technological and economic benefits of engineered nanomaterials may be offset by their adverse effects on living organisms. One of the highly produced nanomaterials under such scrutiny is amorphous silica nanoparticles, which are known to have an appreciable, although reversible, inflammatory potential. This is due to their selective toxicity toward macrophages, and it is thus important to study the cellular responses of this cell type to silica nanoparticles to better understand the direct or indirect adverse effects of nanosilica. We have here studied the responses of the RAW264.7 murine macrophage cells and of the control MPC11 plasma cells to subtoxic concentrations of nanosilica, using a combination of proteomic and targeted approaches. This allowed us to document alterations in the cellular cytoskeleton, in the phagocytic capacity of the cells as well as their ability to respond to bacterial stimuli. More surprisingly, silica nanoparticles also induce a greater sensitivity of macrophages to DNA alkylating agents, such as styrene oxide, even at doses which do not induce any appreciable cell death.

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Publication details

The article was received on 26 Mar 2017, accepted on 27 May 2017 and first published on 31 May 2017


Article type: Paper
DOI: 10.1039/C7NR02140B
Citation: Nanoscale, 2017, Accepted Manuscript
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    Differential proteomics highlights macrophage-specific responses to amorphous silica nanoparticles

    B. Dalzon, C. Aude-Garcia, V. Collin-Faure, H. Diemer, D. Béal, F. Dussert, D. Fenel, G. Schoehn, S. Cianférani, M. Carrière and T. rabilloud, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR02140B

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