2017
DOI: 10.1039/c7nr01111c
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Detection of stiff nanoparticles within cellular structures by contact resonance atomic force microscopy subsurface nanomechanical imaging

Abstract: Detecting stiff nanoparticles buried in soft biological matrices by atomic force microscopy (AFM) based techniques represents a new frontier in the field of scanning probe microscopies, originally developed as surface characterization methods. Here we report the detection of stiff (magnetic) nanoparticles (NPs) internalized in cells by using contact resonance AFM (CR-AFM) employed as a potentially non-destructive subsurface characterization tool. Magnetite (FeO) NPs were internalized in microglial cells from c… Show more

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Cited by 28 publications
(19 citation statements)
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“…This morphological damage in cancer cells confirms the antitumorigenic activity of the CUR-AuNCs, suggesting their potential for cancer therapy. Passeri et al, used contact resonance AFM (CR-AFM) as a nondestructive subsurface nanomechanical characterization tool for the detection of stiff (magnetic) NPs internalized in cells [ 75 ]. Magnetic NPs were internalized within microglial cells through a phagocytosis process.…”
Section: Toxicity Assessment Of Nanomaterialsmentioning
confidence: 99%
“…This morphological damage in cancer cells confirms the antitumorigenic activity of the CUR-AuNCs, suggesting their potential for cancer therapy. Passeri et al, used contact resonance AFM (CR-AFM) as a nondestructive subsurface nanomechanical characterization tool for the detection of stiff (magnetic) NPs internalized in cells [ 75 ]. Magnetic NPs were internalized within microglial cells through a phagocytosis process.…”
Section: Toxicity Assessment Of Nanomaterialsmentioning
confidence: 99%
“…;Wang & Zhao, 2012;Liparoti, Sorrentino, Speranza, & Titomanlio, 2017), NanoSwing mode (Sikora, Woszczyna, Friedemann, Ahlers, & Kalbac, 2012;Sikora & Bednarz, 2011). These methods are potentially extremely effective in terms of spatial resolution, range of measurable elastic modulus values, possibility of characterizing both elastic and viscoelastic properties (Killgore et al, 2011b), as well as capability of to detect subsurface features (Cantrell et al, 2007;Killgore, Kelly, Stafford, Fasolka, & Hurley, 2011a;Parlak & Degertekin, 2008;Reggente et al, 2017;Shekhawat & Dravid, 2005). Overall, these methods have been successfully used in a broad range of materials, for example from hard minerals and coatings to soft polymers and biological samples, including food-related materials (Jones, 2016;Rossi et al, 2014).…”
Section: Nanomechanical Characterization Of Food Packaging Surfacesmentioning
confidence: 99%
“…The subsurface imaging of magnetite NPs internalized in microglia cells has been obtained by Reggente, Passeri, et al () also using HarmoniX, a technique in which force–distance curves are reconstructed by analyzing the torsional response of a T‐shaped cantilever (Sahin et al, ; Sahin & Erina, ). In this case, however, due to the shallower indentation only stiff NPs close to the surface can be visualized (Passeri, Tamburri, Terranova, & Rossi, ).…”
Section: Identification Of Nanoparticles and Nanosystems In Biological Matricesmentioning
confidence: 99%