Altering model cell membranes by means of localized magnetic heating

Altering model cell membranes by means of localized magnetic heating

[Display omitted] •Magnetic hydrophobic nanoparticles are immobilized onto a model cell membrane.•An Alternating Magnetic Field (AMF) induces changes in the membrane fluidity.•Embedding of MNPs into the monolayer occurs due to a local thermal rise. Isolated iron oxide magnetic nanoparticles (MNPs),...

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Veröffentlicht in:Colloids and surfaces, B, Biointerfaces B, Biointerfaces, 2020-12, Vol.196, p.111315-111315, Article 111315
Hauptverfasser: Ruiz-Rincón, Silvia, González-Orive, Alejandro, Grazú, Valeria, Fratila, Raluca M., Fuente, Jesús M. de la, Cea, Pilar
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Alternating magnetic Field
Langmuir-Blodgett films
Magnetic nanoparticles
Model cell membrane
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container_end_page 111315
container_issue
container_start_page 111315
container_title Colloids and surfaces, B, Biointerfaces
container_volume 196
creator Ruiz-Rincón, Silvia
González-Orive, Alejandro
Grazú, Valeria
Fratila, Raluca M.
Fuente, Jesús M. de la
Cea, Pilar
description [Display omitted] •Magnetic hydrophobic nanoparticles are immobilized onto a model cell membrane.•An Alternating Magnetic Field (AMF) induces changes in the membrane fluidity.•Embedding of MNPs into the monolayer occurs due to a local thermal rise. Isolated iron oxide magnetic nanoparticles (MNPs), 12 nm in diameter, coated with oleic acid molecules as capping agents have been deposited by the Langmuir-Blodgett (LB) method onto a model cell membrane incorporating 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and Cholesterol (Chol) in the 1:1 ratio, which was also fabricated by the LB technique. Atomic Force Microscopy (AFM) experiments showed that the application of an alternating magnetic field results in the embedding of the MNPs through the phospholipidic layer. These experimental results reveal that the heating of individual MNPs may induce a local increase in the fluidity of the film with a large control of the spatial and temporal specificity.
doi_str_mv 10.1016/j.colsurfb.2020.111315
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subjects Alternating magnetic Field
Langmuir-Blodgett films
Magnetic nanoparticles
Model cell membrane
title Altering model cell membranes by means of localized magnetic heating
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