Potential Use of DMSA-Containing Iron Oxide Nanoparticles as Magnetic Vehicles against the COVID-19 Disease Elisama S. Martins, Ariane Espindola, Tatiane N. Britos, Camila Chagas, Emerson Barbosa, et al. Chemistryselect, 2021 Iron oxide magnetic nanoparticles have been employed as potential vehicles for a large number of biomedical applications, such as drug delivery. This article describes the synthesis, characterization and in vitro cytotoxic in COVID‐19 cells evaluation of DMSA superparamagnetic iron oxide magnetic nanoparticles. Magnetite (Fe3O4) nanoparticles were synthesized by co‐precipitation of iron salts and coated with meso‐2,3‐dimercaptosuccinic acid (DMSA) molecule. Structural and morphological characterizations were performed by X‐ray diffraction (XRD), Fourier transformed infrared (FT‐IR), magnetic measurements (SQUID), transmission electron microscopy (TEM), and dynamic light scattering (DLS). Our results demonstrate that the nanoparticles have a mean diameter of 12 nm in the solid‐state and are superparamagnetic at room temperature. There is no toxicity of SPIONS‐DMSA under the cells of patients with COVID‐19. Taken together the results show that DMSA‐ Fe3O4 are good candidates as nanocarriers in the alternative treatment of studied cells.
Preparation, Characterization and Tests of Incorporation in Stem Cells of Superparamagnetic Iron Oxide P S Haddad, T N Britos, L M Li, L D S Li Journal of Physics Conference Series, 2015 Superparamagnetic iron oxide nanoparticles (SPIONs) have been produced and used as contrast-enhancing agents in magnetic resonance imaging (MRI) for diagnostic use in a wide range of maladies including cardiovascular, neurological disorders, and cancer. The reasons why these SPIONs are attractive for medical purposes are based on their important and unique features. The large surface area of the nanoparticles and their manipulation through an external magnetic field are features that allow their use for carrying a large number of molecules such as biomolecules or drugs. In this scenario, the present work reports on the synthesis and characterization of SPIONs and in vitro MRI experiments to increase their capacity as probes for MRI applications on stem cells therapy. Initially, the SPIONs were prepared through the co-precipitation method using ferrous and ferric chlorides in acidic solution. The SPIONs were coated with two thiolmolecules such as mercaptosuccinic acid (MSA) and cysteine (Cys) (molar ratio SPIONs:ligand = 1:20), leading to the formation of a stable aqueous dispersion of thiolated nanoparticles (SH-SPIONs). The SH-SPIONs were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), and vibrating sample magnetometry (VSM). The results showed that the SH-SPIONs have a mean diameter of 14 nm and display superparamagnetic behavior at room temperature. Preliminary tests of incorporation of SH-SPIONs were evaluated stem cells. The results showed that the thiolated nanoparticles have no toxic effects for stem cells and successfully internalized and enhance the contrast in MRI.
Synthesis, Characterization and Cytotoxicity Evaluation of Nitric Oxide-Iron Oxide magnetic Nanoparticles P S Haddad, T N Britos, M C Santos, A B Seabra, M V Palladino, et al. Journal of Physics Conference Series, 2015 The present work is focused on the synthesis, characterization and cytotoxic evaluation of superparamagnetic iron oxide nanoparticles (SPIONs). SPIONs have been proposed for an increasing number of biomedical applications, such as drug-delivery. To this end, toxicological studies of their potential effects in biological systems must be better evaluated. The aim of this study was to examine the in vitro cytotoxicity of thiolated (SH) and S-nitrosated (S-NO) SPIONs in cancer cell lines. SPIONs were prepared by the coprecipitation method using ferrous and ferric chlorides in aqueous solution. The nanoparticles (Fe3O4) were coated with thiol containing molecule cysteine (Cys) (molar ratio SPIONs:ligand = 1:20), leading to the formation of an aqueous dispersion of thiolated nanoparticles (SH- SPIONs). These particles were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The results obtained showed that Cys-SPIONs have a mean diameter of 14 nm at solid state and present super paramagnetic behavior at room temperature. Thiol groups on the surface of the nanoparticles were nitrosated through the addition of sodium nitrite leading to the formation of S-NOCys-SPIONs (S-nitrosated-Cys-SPIONs), which act as spontaneous nitric oxide (NO) donor). The cytotoxicity of thiolated and S-nitrosated nanoparticles was evaluated in acute T cell leukemia (Jurkat cell line) and Lewis lung carcinoma (3LL) cells. The results showed that at low concentrations thiolated (Cys) and S- nitrosated (S-NOCyst) SPIONs display low cytotoxicity in both cell types. However, at higher concentrations, Cys-SPIONs exhibited cytotoxic effects, whereas S-NOCys-SPIONs protected them, and also promoted cell proliferation.
Synthesis, Characterization, and Toxicity Assessment of Superparamagnetic Iron Oxide Nanoparticles Coated with Antitumor Molecules C Chagas, EB da Silva, BCA Alves, GL da Veiga, EC Pereira, P Haddad, ... ACS omega 10 (17), 17237-17248 , 2025 2025 Citations: 1
Superparamagnetic nanoparticles as potential drug delivery systems for the treatment of Duchenne muscular dystrophy ML Schumacher, TN Britos, FLA Fonseca, FF Ferreira, D Feder, P Fratini, ... Nanoscale 17 (7), 3752-3767 , 2025 2025 Citations: 8
A review of superparamagnetic nanoparticles applications and regulatory aspects in medicine and environmental areas DW Losito, NIN Souza, TS Martins, TN Britos, ML Schumacher, ... Journal of Materials Science 59 (34), 16038-16068 , 2024 2024 Citations: 15
In vitro results with minimal blood toxicity of a combretastatin A4 analogue C Chagas, JV Mansano, EB da Silva, G Petri, ... Investigational New Drugs 42 (3), 318-325 , 2024 2024
Antioxidant action of L-cysteine anchored on the surface of magnetite nanoparticles T Britos, N Santana, ML Schumacher, E Barbosa, A de Espindola, ... Next Nanotechnology 6, 100076 , 2024 2024 Citations: 5
Synthesis and characterization of SPIONs functionalized with Cysteine and Glutathione for biomedical applications TN Britos, CS Chagas, EB Silva, FLA Fonseca, PSH Ferreira Proceedings of the 21. Brazil MRS Meeting, 603-603 , 2023 2023
Potential use of DMSA‐containing iron oxide nanoparticles as magnetic vehicles against the COVID‐19 disease ES Martins, A Espindola, TN Britos, C Chagas, E Barbosa, CE Castro, ... ChemistrySelect 6 (31), 7931-7935 , 2021 2021 Citations: 21
Thiolated superparamagnetic nanoparticles as potential biological vehicles T Britos, CS Chagas, FF Ferreira, FLA Fonseca, PSH Ferreira Proceedings of the 44. annual meeting of the Brazilian society on chemistry … , 2021 2021
Tuning the local structure of SPIONs by PDF FF Ferreira, VDN Bezzon, TN Britos, PS Haddad Proceedings of the 2021: Brazil MRS Meeting; International Union of … , 2021 2021
In vivo evaluation of thiol-functionalized superparamagnetic iron oxide nanoparticles TN Britos, CE Castro, BM Bertassoli, G Petri, FLA Fonseca, FF Ferreira, ... Materials Science and Engineering: C 99, 171-179 , 2019 2019 Citations: 34
Synthesis and characterization of superparamagnetic iron oxide nanoparticles functionalized with cysteine, glutathione and gold for potential biomedical applications TN Britos, PS Haddad 2018
Human risk assessment and its application to nanotechnology: A challenge for assessors C Emond, TN Britos Journal of Physics: Conference Series 617 (1), 012039 , 2015 2015 Citations: 3
Synthesis, characterization and cytotoxicity evaluation of nitric oxide-iron oxide magnetic nanoparticles PS Haddad, TN Britos, MC Santos, AB Seabra, MV Palladino, GZ Justo Journal of Physics: Conference Series 617 (1), 012022 , 2015 2015 Citations: 9
Preparation, characterization and tests of incorporation in stem cells of superparamagnetic iron oxide PS Haddad, TN Britos, LM Li, LDS Li Journal of Physics: Conference Series 617 (1), 012002 , 2015 2015 Citations: 11
Spectroscopy of high lying resonances in 9Be produced with radioactive 8Li beams A Lépine-Szily, E Leistenschneider, DR Mendes, P Descouvemont, ... EPJ Web of Conferences 69, 00006 , 2014 2014
MS48. P05 T Britos, L Min, LDS Li, P Haddad Acta Cryst 70, C743 , 2014 2014
Experimental study of the resonant elastic scattering'ANTPOT. 8'LI'(p, p)'ANTPOT. 8'LI' E Leistenschneider, DR Mendes Jr, PN de Faria, V Morcelle, KCC Pires, ... Resumos , 2013 2013
Coulomb excitation of {sup 8} Li M Assuncao, TN Britos, P Descouvemont, A Lepine-Szily, ... 2012
Elastic and Inelastic scattering measurement of 8Li on 197Au TN Britos, V Morcelle, M Assunção, P Descouvemont, A Lépine-Szily, ... Resumo , 2012 2012
Coulomb excitation of 8Li M Assuncao, TN Britos, P Descouvemont, A Lepine-Szily, ... 2012
MOST CITED SCHOLAR PUBLICATIONS
In vivo evaluation of thiol-functionalized superparamagnetic iron oxide nanoparticles TN Britos, CE Castro, BM Bertassoli, G Petri, FLA Fonseca, FF Ferreira, ... Materials Science and Engineering: C 99, 171-179 , 2019 2019 Citations: 34
Potential use of DMSA‐containing iron oxide nanoparticles as magnetic vehicles against the COVID‐19 disease ES Martins, A Espindola, TN Britos, C Chagas, E Barbosa, CE Castro, ... ChemistrySelect 6 (31), 7931-7935 , 2021 2021 Citations: 21
A review of superparamagnetic nanoparticles applications and regulatory aspects in medicine and environmental areas DW Losito, NIN Souza, TS Martins, TN Britos, ML Schumacher, ... Journal of Materials Science 59 (34), 16038-16068 , 2024 2024 Citations: 15
Preparation, characterization and tests of incorporation in stem cells of superparamagnetic iron oxide PS Haddad, TN Britos, LM Li, LDS Li Journal of Physics: Conference Series 617 (1), 012002 , 2015 2015 Citations: 11
Synthesis, characterization and cytotoxicity evaluation of nitric oxide-iron oxide magnetic nanoparticles PS Haddad, TN Britos, MC Santos, AB Seabra, MV Palladino, GZ Justo Journal of Physics: Conference Series 617 (1), 012022 , 2015 2015 Citations: 9
Superparamagnetic nanoparticles as potential drug delivery systems for the treatment of Duchenne muscular dystrophy ML Schumacher, TN Britos, FLA Fonseca, FF Ferreira, D Feder, P Fratini, ... Nanoscale 17 (7), 3752-3767 , 2025 2025 Citations: 8
Antioxidant action of L-cysteine anchored on the surface of magnetite nanoparticles T Britos, N Santana, ML Schumacher, E Barbosa, A de Espindola, ... Next Nanotechnology 6, 100076 , 2024 2024 Citations: 5
Human risk assessment and its application to nanotechnology: A challenge for assessors C Emond, TN Britos Journal of Physics: Conference Series 617 (1), 012039 , 2015 2015 Citations: 3
Synthesis, Characterization, and Toxicity Assessment of Superparamagnetic Iron Oxide Nanoparticles Coated with Antitumor Molecules C Chagas, EB da Silva, BCA Alves, GL da Veiga, EC Pereira, P Haddad, ... ACS omega 10 (17), 17237-17248 , 2025 2025 Citations: 1
In vitro results with minimal blood toxicity of a combretastatin A4 analogue C Chagas, JV Mansano, EB da Silva, G Petri, ... Investigational New Drugs 42 (3), 318-325 , 2024 2024
Synthesis and characterization of SPIONs functionalized with Cysteine and Glutathione for biomedical applications TN Britos, CS Chagas, EB Silva, FLA Fonseca, PSH Ferreira Proceedings of the 21. Brazil MRS Meeting, 603-603 , 2023 2023
Thiolated superparamagnetic nanoparticles as potential biological vehicles T Britos, CS Chagas, FF Ferreira, FLA Fonseca, PSH Ferreira Proceedings of the 44. annual meeting of the Brazilian society on chemistry … , 2021 2021
Tuning the local structure of SPIONs by PDF FF Ferreira, VDN Bezzon, TN Britos, PS Haddad Proceedings of the 2021: Brazil MRS Meeting; International Union of … , 2021 2021
Synthesis and characterization of superparamagnetic iron oxide nanoparticles functionalized with cysteine, glutathione and gold for potential biomedical applications TN Britos, PS Haddad 2018
Spectroscopy of high lying resonances in 9Be produced with radioactive 8Li beams A Lépine-Szily, E Leistenschneider, DR Mendes, P Descouvemont, ... EPJ Web of Conferences 69, 00006 , 2014 2014
MS48. P05 T Britos, L Min, LDS Li, P Haddad Acta Cryst 70, C743 , 2014 2014
Experimental study of the resonant elastic scattering'ANTPOT. 8'LI'(p, p)'ANTPOT. 8'LI' E Leistenschneider, DR Mendes Jr, PN de Faria, V Morcelle, KCC Pires, ... Resumos , 2013 2013
Coulomb excitation of {sup 8} Li M Assuncao, TN Britos, P Descouvemont, A Lepine-Szily, ... 2012
Elastic and Inelastic scattering measurement of 8Li on 197Au TN Britos, V Morcelle, M Assunção, P Descouvemont, A Lépine-Szily, ... Resumo , 2012 2012
Coulomb excitation of 8Li M Assuncao, TN Britos, P Descouvemont, A Lepine-Szily, ... 2012