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Revealing the NIR-triggered chemotherapy therapeutic window of magnetic and thermoresponsive nanogels

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Abstract

The combination of magnetic nanoparticles and thermoresponsive nanogels represents an appealing strategy for the development of theranostic probes. These hybrid nanocarriers present several advantages such as outstanding properties for guided therapy, magnetic resonance imaging, and triggered release of encapsulated cargoes. Most magnetic thermoresponsive nanogels are built with strategies that comprise a physical interaction of particles with the polymeric network or the covalent attachment of a single particle to the linear polymer. Herein, we report a facile synthetic approach for the synthesis of magnetic and thermoresponsive nanogels that allows the controlled incorporation of multiple superparamagnetic inorganic cores as covalent cross-linkers. An ultrasonication-assisted precipitation–polymerization afforded nanogels with sizes in the nanometric range and similar magnetization and light transduction properties compared to the discrete magnetic nanoparticles. The theranostic capability of these nanocarriers was further investigated both in vitro and in vivo. In vivo experiments demonstrated the capacity of these materials as nanocarriers for near-infrared (NIR) triggered chemotherapy and highlighted the relevance of the correct concentration/dose in this antitumoral modality to achieve a superior therapeutic efficacy.

Graphical abstract: Revealing the NIR-triggered chemotherapy therapeutic window of magnetic and thermoresponsive nanogels

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Article information


Submitted
14 Apr 2020
Accepted
30 Jul 2020
First published
30 Jul 2020

Nanoscale, 2020, Advance Article
Article type
Paper

Revealing the NIR-triggered chemotherapy therapeutic window of magnetic and thermoresponsive nanogels

C. Biglione, J. Bergueiro, S. Wedepohl, B. Klemke, M. C. Strumia and M. Calderón, Nanoscale, 2020, Advance Article , DOI: 10.1039/D0NR02953J

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