Efficacy and Molecular Effects of a Reduced Graphene Oxide/Fe3O4 Nanocomposite in Photothermal Therapy Against Cancer

Claudia C Barrera,1 Helena Groot,1 Watson L Vargas,2 Diana M Narváez1 1Human Genetics Laboratory, Department of Biological Sciences, Universidad de Los Andes, Bogotá, Colombia; 2Department of Chemical Engineering, Universidad de Los Andes, Bogotá, ColombiaCorresponde...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Barrera CC, Groot H, Vargas WL, Narváez DM
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2020
Materias:
Acceso en línea:https://doaj.org/article/fa43c443eea44fafb8cd23d5e622cb99
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:fa43c443eea44fafb8cd23d5e622cb99
record_format dspace
spelling oai:doaj.org-article:fa43c443eea44fafb8cd23d5e622cb992021-12-02T11:11:00ZEfficacy and Molecular Effects of a Reduced Graphene Oxide/Fe3O4 Nanocomposite in Photothermal Therapy Against Cancer1178-2013https://doaj.org/article/fa43c443eea44fafb8cd23d5e622cb992020-08-01T00:00:00Zhttps://www.dovepress.com/efficacy-and-molecular-effects-of-a-reduced-graphene-oxidefe3o4-nanoco-peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013Claudia C Barrera,1 Helena Groot,1 Watson L Vargas,2 Diana M Narváez1 1Human Genetics Laboratory, Department of Biological Sciences, Universidad de Los Andes, Bogotá, Colombia; 2Department of Chemical Engineering, Universidad de Los Andes, Bogotá, ColombiaCorrespondence: Claudia C BarreraHuman Genetics Laboratory, Department of Biological Sciences, Universidad de Los Andes, Cra. 1 # 18a-10, Bogotá, ColombiaTel +57 1 310 2936500Email cc.barrera1103@uniandes.edu.coPurpose: Expanded research on the biomedical applications of graphene has shown promising results, although interactions between cells and graphene are still unclear. The current study aims to dissect the cellular and molecular effects of graphene nanocomposite in photothermal therapy against cancer, and to evaluate its efficacy.Methods: In this study, a reduced graphene oxide and iron oxide (rGO-Fe3O4) nanocomposite was obtained by chemical synthesis. The nanocomposite was fully characterized by Raman spectroscopy, TEM, VSM and thermal profiling. Cell-nanocomposite interaction was evaluated by confocal microscopy and viability assays on cancer cell line HeLa. The efficacy of the thermal therapy and changes in gene expression of Bcl-2 and Hsp70 was assessed.Results: The resulting rGO-Fe3O4 nanocomposite exhibited superparamagnetic properties and the capacity to increase the surrounding temperature by 18– 20°C with respect to the initial temperature. The studies of cell-nanocomposite interaction showed that rGO-Fe3O4 attaches to cell membrane but there is a range of concentration at which the nanomaterial preserves cell viability. Photothermal therapy reduced cell viability to 32.6% and 23.7% with 50 and 100 μg/mL of nanomaterial, respectively. The effect of treatment on the molecular mechanism of cell death demonstrated an overexpression of anti-apoptotic proteins Hsp70 and Bcl-2 as an initial response to the therapy and depending on the aggressiveness of the treatment.Conclusion: The results of this study contribute to understanding the interactions between cell and graphene and support its application in photothermal therapy against cancer due to its promising results.Keywords: reduced graphene oxide, iron oxide, photothermal therapy, cell viability, anti-apoptotic genes, molecular effectBarrera CCGroot HVargas WLNarváez DMDove Medical Pressarticlereduced graphene oxideiron oxidephotothermal therapycell viabilityanti-apoptotic genesmolecular effect.Medicine (General)R5-920ENInternational Journal of Nanomedicine, Vol Volume 15, Pp 6421-6432 (2020)
institution DOAJ
collection DOAJ
language EN
topic reduced graphene oxide
iron oxide
photothermal therapy
cell viability
anti-apoptotic genes
molecular effect.
Medicine (General)
R5-920
spellingShingle reduced graphene oxide
iron oxide
photothermal therapy
cell viability
anti-apoptotic genes
molecular effect.
Medicine (General)
R5-920
Barrera CC
Groot H
Vargas WL
Narváez DM
Efficacy and Molecular Effects of a Reduced Graphene Oxide/Fe3O4 Nanocomposite in Photothermal Therapy Against Cancer
description Claudia C Barrera,1 Helena Groot,1 Watson L Vargas,2 Diana M Narváez1 1Human Genetics Laboratory, Department of Biological Sciences, Universidad de Los Andes, Bogotá, Colombia; 2Department of Chemical Engineering, Universidad de Los Andes, Bogotá, ColombiaCorrespondence: Claudia C BarreraHuman Genetics Laboratory, Department of Biological Sciences, Universidad de Los Andes, Cra. 1 # 18a-10, Bogotá, ColombiaTel +57 1 310 2936500Email cc.barrera1103@uniandes.edu.coPurpose: Expanded research on the biomedical applications of graphene has shown promising results, although interactions between cells and graphene are still unclear. The current study aims to dissect the cellular and molecular effects of graphene nanocomposite in photothermal therapy against cancer, and to evaluate its efficacy.Methods: In this study, a reduced graphene oxide and iron oxide (rGO-Fe3O4) nanocomposite was obtained by chemical synthesis. The nanocomposite was fully characterized by Raman spectroscopy, TEM, VSM and thermal profiling. Cell-nanocomposite interaction was evaluated by confocal microscopy and viability assays on cancer cell line HeLa. The efficacy of the thermal therapy and changes in gene expression of Bcl-2 and Hsp70 was assessed.Results: The resulting rGO-Fe3O4 nanocomposite exhibited superparamagnetic properties and the capacity to increase the surrounding temperature by 18– 20°C with respect to the initial temperature. The studies of cell-nanocomposite interaction showed that rGO-Fe3O4 attaches to cell membrane but there is a range of concentration at which the nanomaterial preserves cell viability. Photothermal therapy reduced cell viability to 32.6% and 23.7% with 50 and 100 μg/mL of nanomaterial, respectively. The effect of treatment on the molecular mechanism of cell death demonstrated an overexpression of anti-apoptotic proteins Hsp70 and Bcl-2 as an initial response to the therapy and depending on the aggressiveness of the treatment.Conclusion: The results of this study contribute to understanding the interactions between cell and graphene and support its application in photothermal therapy against cancer due to its promising results.Keywords: reduced graphene oxide, iron oxide, photothermal therapy, cell viability, anti-apoptotic genes, molecular effect
format article
author Barrera CC
Groot H
Vargas WL
Narváez DM
author_facet Barrera CC
Groot H
Vargas WL
Narváez DM
author_sort Barrera CC
title Efficacy and Molecular Effects of a Reduced Graphene Oxide/Fe3O4 Nanocomposite in Photothermal Therapy Against Cancer
title_short Efficacy and Molecular Effects of a Reduced Graphene Oxide/Fe3O4 Nanocomposite in Photothermal Therapy Against Cancer
title_full Efficacy and Molecular Effects of a Reduced Graphene Oxide/Fe3O4 Nanocomposite in Photothermal Therapy Against Cancer
title_fullStr Efficacy and Molecular Effects of a Reduced Graphene Oxide/Fe3O4 Nanocomposite in Photothermal Therapy Against Cancer
title_full_unstemmed Efficacy and Molecular Effects of a Reduced Graphene Oxide/Fe3O4 Nanocomposite in Photothermal Therapy Against Cancer
title_sort efficacy and molecular effects of a reduced graphene oxide/fe3o4 nanocomposite in photothermal therapy against cancer
publisher Dove Medical Press
publishDate 2020
url https://doaj.org/article/fa43c443eea44fafb8cd23d5e622cb99
work_keys_str_mv AT barreracc efficacyandmoleculareffectsofareducedgrapheneoxidefe3o4nanocompositeinphotothermaltherapyagainstcancer
AT grooth efficacyandmoleculareffectsofareducedgrapheneoxidefe3o4nanocompositeinphotothermaltherapyagainstcancer
AT vargaswl efficacyandmoleculareffectsofareducedgrapheneoxidefe3o4nanocompositeinphotothermaltherapyagainstcancer
AT narvaezdm efficacyandmoleculareffectsofareducedgrapheneoxidefe3o4nanocompositeinphotothermaltherapyagainstcancer
_version_ 1718396211426230272