Magneto-optical hyperthermia agents based on probiotic bacteria loaded with magnetic and gold nanoparticles

Garcés, V. ; González, A. ; Gálvez, N. ; Delgado-López, J. M. ; Calvino, J. J. ; Trasobares, S. ; Fernández-Afonso, Y. ; Gutiérrez, L. (Universidad de Zaragoza) ; Dominguez-Vera, J.

Resumen: Probiotic bacteria were used as carriers of metallic nanoparticles to develop innovative oral agents for hyperthermia cancer therapy. Two synthetic strategies were used to produce the different therapeutic agents. First, the probiotic bacterium Lactobacillus fermentum was simultaneously loaded with magnetic (MNPs) and gold nanoparticles (AuNPs) of different morphologies to produce AuNP + MNP-bacteria systems with both types of nanoparticles arranged in the same layer of bacterial exopolysaccharides (EPS). In the second approach, the probiotic was first loaded with AuNP to form AuNP-bacteria and subsequently loaded with MNP-EPS to yield AuNP-bacteria-EPS-MNP with the MNP and AuNP arranged in two different EPS layers. This second strategy has never been reported and exploits the presence of EPS-EPS recognition which allows the layer-by-layer formation of structures on the bacteria external wall. The AuNP + MNP-bacteria and AuNP-bacteria-EPS-MNP samples were characterized by scanning (SEM) and transmission electron microscopy (TEM), and UV-vis spectroscopy. The potential of these two heterobimetallic systems as magnetic hyperthermia or photothermal therapy agents was assessed, validating their capacity to produce heat either during exposure to an alternating magnetic field or near-infrared laser light. The probiotic Lactobacillus fermentum has already been proposed as an oral drug carrier, able to overcome the stomach medium and deliver drugs to the intestines, and it is actually marketed as an oral supplement to reinforce the gut microbiota, thus, our results open the way for the development of novel therapeutic strategies using these new heterobimetallic AuNP/MNP-bacteria systems in the frame of gastric diseases, using them, for example, as oral agents for cancer treatment with magnetic hyperthermia and photothermal therapy. © 2022 The Royal Society of Chemistry

Idioma: Inglés

DOI: 10.1039/d1nr08513a

Año: 2022

Publicado en: Nanoscale 14, 15 (2022), 5716-5724
ISSN: 2040-3364

Factor impacto JCR: 6.7 (2022)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 83 / 343 = 0.242 (2022) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 27 / 160 = 0.169 (2022) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 43 / 178 = 0.242 (2022) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 37 / 107 = 0.346 (2022) - Q2 - T2

Factor impacto CITESCORE: 13.6 - Materials Science (Q1)

Factor impacto SCIMAGO: 1.62 - Nanoscience and Nanotechnology (Q1) - Materials Science (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PGC2018-096016-B-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-111461GB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/RYC-2016-21042

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)