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Illanes Tormena RP, Medeiros Salviano Santos MK, Oliveira da Silva A, Félix FM, Chaker JA, Freire DO, Rodrigues da Silva IC, Moya SE, Sousa MH. Enhancing the antimicrobial activity of silver nanoparticles against pathogenic bacteria by using Pelargonium sidoides DC extract in microwave assisted green synthesis. RSC Adv 2024; 14:22035-22043. [PMID: 39006771 PMCID: PMC11240086 DOI: 10.1039/d4ra04140b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Accepted: 06/30/2024] [Indexed: 07/16/2024] Open
Abstract
This study presents an optimized microwave-assisted method for the green synthesis of silver nanoparticles (AgNPs) using a root extract obtained from Pelargonium sidoides DC. The influence of temperature, reagent concentration, and irradiation time was systematically investigated to enhance synthesis yield. Characterization techniques including XRD, UV-vis, FTIR, XPS, and zetametry were employed to confirm the successful formation of nanoparticles with a metallic silver core (∼17 nm) functionalized with organic molecules derived from the plant extract. The cytotoxicity of AgNPs was assessed using a cell viability assay, while the Minimum Inhibitory Concentration (MIC) of nanoformulation against pathogenic bacteria, including Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and the carbapenem-resistant Klebsiella pneumoniae (KPC), was determined using the Broth microdilution method. The nanoformulation synthesized with P. sidoides extract exhibited a dose-dependent response, demonstrating superior antimicrobial efficacy compared to the pure plant extract in most cases. The MIC values ranged from 0.85 to 17.1 μg mL-1, with particularly strong performance against the drug resistant KPC strain. The enhanced antimicrobial effect is attributed to the synergistic action of the metallic silver core and phytochemicals from P. sidoides on the surface of nanoparticles, which also contribute to notable colloidal stability of AgNPs at physiological pH levels.
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Affiliation(s)
| | | | | | | | | | - Daniel Oliveira Freire
- Graduate Program in Health Sciences and Technologies, Faculty of Ceilandia, University of Brasília DF 72220-900 Brasilia Brazil
| | | | - Sergio Enrique Moya
- Soft Matter Nanotechnology Laboratory, CIC biomaGUNE 20009 San Sebastian Guip Spain
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2
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Rodovalho FL, Rosa EV, da Silva AO, Moya SE, Campos AFC, Sousa MH. Enhancing the efficiency of magnetically driven carbon nitride-based nanocomposites with magnetic nanoflowers for the removal of methylene blue dye at neutral pH. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-32131-5. [PMID: 38267649 DOI: 10.1007/s11356-024-32131-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/18/2024] [Indexed: 01/26/2024]
Abstract
The present study focuses on the elaboration of magnetic nanocomposites by the in situ incorporation of magnetite (Fe3O4) nanoparticles (NPs) with spherical and nanoflower-like morphologies in graphitic carbon nitride (g-C3N4) sheets using two different synthetic routes. Nanomaterials are characterized by TEM, SEM, XRD, FTIR, BET, zetametry, vibrating sample magnetometry, and UV-vis absorption spectroscopy. The decoration of the carbon nitride matrix with the magnetic NPs enhanced optical and textural properties. The influence of the morphology of the magnetic NPs on the adsorptive and photocatalytic properties of the nanocomposites under different pH conditions (4.5, 6.9, and 10.6) was assessed from batch tests to remove methylene blue (MB) from aqueous solutions. In extreme pH conditions, the nanocomposites exhibited lower or equivalent MB removal capacity compared to the pure g-C3N4. However, at neutral medium, the nanocomposite with incorporated Fe3O4 nanoflowers showed a significantly higher removal efficiency (80.7%) due to the combination of a high adsorption capacity and a good photocatalytic activity in this pH region. The proposed nanocomposite is a promising alternative to remove cationic dyes from water by magnetic assistance, since no pH adjustment of the polluted effluent is required, reducing costs and environmental impact in the dyeing industry.
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Affiliation(s)
- Fernanda Lopes Rodovalho
- Green Nanotechnology Group, University of Brasilia, CEP 72220-900, Brasilia, DF, Brazil
- Postgraduate Program in Health Sciences and Technologies, Faculty of Ceilandia, University of Brasilia, Brasilia, DF, 72220-275, Brazil
| | - Eliane Vieira Rosa
- Green Nanotechnology Group, University of Brasilia, CEP 72220-900, Brasilia, DF, Brazil
- Federal Institute of Education, Science and Technology Goiano - Campus Ceres, Ceres, GO, 76300-000, Brazil
| | | | - Sergio Enrique Moya
- Soft Matter Nanotechnology Laboratory, CIC biomaGUNE, San Sebastian, 20009, Guip, Spain
| | - Alex Fabiano Cortez Campos
- Laboratory for Environmental and Applied Nanoscience, Faculty UnB - Planaltina, University of Brasilia, Brasilia, DF, 73345-010, Brazil
- International Center of Physics, Institute of Physics, University of Brasilia, Brasilia, DF, 70910-900, Brazil
| | - Marcelo Henrique Sousa
- Green Nanotechnology Group, University of Brasilia, CEP 72220-900, Brasilia, DF, Brazil.
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3
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Mosiniewicz-Szablewska E, Figueiredo LC, da Silva AO, Sousa MH, de Morais PC. Magnetic studies of ultrafine CoFe 2O 4 nanoparticles with different molecular surface coatings. Phys Chem Chem Phys 2024; 26:3296-3314. [PMID: 38197174 DOI: 10.1039/d3cp04146h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Surface functionalized ultrafine CoFe2O4 nanoparticles (NPs), with mean diameter ∼5 nm, were investigated by means of DC magnetization and AC susceptibility over the temperature range of 4-400 K. All NPs present the same CoFe2O4 core, with different molecular surface coatings, increasing gradually the number of carbon atoms in the coating layer: glycine (C2H5NO2), alanine (C3H7NO2), aminobutanoic acid (C4H9NO2), aminohexanoic acid (C6H13NO2), and aminododecanoic acid (C12H25NO2). Samples were intentionally fabricated in order to modulate the core-core magnetic dipolar interaction, as the thickness of the coating layer increases with the number of carbon atoms in the coating molecule. The magnetic data of the uncoated CoFe2O4 NPs were also collected for comparison. All investigated CoFe2O4 NPs (coated and uncoated) are in a magnetically blocked state at room temperature as evidenced by ZFC/FC measurements and the presence of hysteresis with ∼700 Oe coercivity. Low temperature magnetization scans show slightly constricted hysteresis loops with coercivity decreasing systematically with a decreasing number of carbon atoms in the coating molecule, possibly resulting from differences in magnetic dipole coupling between NPs. Large thermomagnetic irreversibility, slow monotonic increase in the FC magnetization and non-saturation of the magnetization give evidence for the cluster glass (CG) nature in the CoFe2O4 NPs. The out of phase part (χ'') of AC susceptibility for all samples shows a clear frequency dependent hump which was analyzed to distinguish superparamagnetic (SPM), cluster glass (CG) and spin glass (SG) behavior by using Néel-Arrhenius, Vogel-Fulcher, and power law fittings. These analyses rule out the SPM state and suggest the presence of significant inter-cluster dipolar interaction, giving rise to CG cooperative freezing in the high-temperature region. In the low-temperature range, however, the disordered spins on the nanoparticle's surface play an important role in the formation of the SG-like state, as evidenced by Arrott plots and temperature dependency of dM/dH in the initial magnetization curves. In summary, the magnetic measurements showed that undercooling the system evolves from a SPM state of weakly interacting spin clusters, through the CG state induced by strong dipolar interaction, to the SG state resulting from the frustration of the disordered surface spins.
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Affiliation(s)
| | | | | | - Marcelo Henrique Sousa
- Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília DF 70790-160, Brazil
| | - Paulo César de Morais
- Institute of Physics, University of Brasília, Brasília DF 70910-900, Brazil
- Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília DF 70790-160, Brazil
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4
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Synthesis, characterization, and cytotoxicity assay of γ-Fe2O3 nanoparticles coated with quercetin-loaded polyelectrolyte multilayers. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05023-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Jardim KV, Palomec‐Garfias AF, Araújo MV, Márquez‐Beltrán C, Bakuzis AF, Moya SE, Parize AL, Sousa MH. Remotely triggered curcumin release from stimuli‐responsive magneto‐polymeric
layer‐by‐layer
engineered nanoplatforms. J Appl Polym Sci 2022. [DOI: 10.1002/app.52200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | | | - Andris Figueiroa Bakuzis
- Instituto de Física Universidade Federal de Goiás, Campus Samambaia Goiânia Brazil
- CNanoMed, Parque Tecnológico Samambaia Universidade Federal de Goiás Goiânia Brazil
| | - Sergio Enrique Moya
- Soft Matter Nanotechnology Laboratory CIC biomaGUNE San Sebastián, Guip Spain
| | - Alexandre Luis Parize
- Polimat, Grupo de Estudos em Materiais Poliméricos, Departamento de Química Universidade Federal de Santa Catarina Florianópolis Brazil
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6
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Xu Y, Zheng H, Schumacher D, Liehn EA, Slabu I, Rusu M. Recent Advancements of Specific Functionalized Surfaces of Magnetic Nano- and Microparticles as a Theranostics Source in Biomedicine. ACS Biomater Sci Eng 2021; 7:1914-1932. [PMID: 33856199 DOI: 10.1021/acsbiomaterials.0c01393] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Magnetic nano- and microparticles (MNMPs) belong to a highly versatile class of colloids with actuator and sensor properties that have been broadly studied for their application in theranostics such as molecular imaging and drug delivery. The use of advanced biocompatible, biodegradable polymers and polyelectrolytes as MNMP coating materials is essential to ensure the stability of MNMPs and enable efficient drug release while at the same time preventing cytotoxic effects. In the past years, huge progress has been made in terms of the design of MNMPs. Especially, the understanding of coating formation with respect to control of drug loading and release kinetics on the molecular level has significantly advanced. In this review, recent advancements in the field of MNMP surface engineering and the applicability of MNMPs in research fields of medical imaging, diagnosis, and nanotherapeutics are presented and discussed. Furthermore, in this review the main emphasis is put on the manipulation of biological specimens and cell trafficking, for which MNMPs represent a favorable tool enabling transport processes of drugs through cell membranes. Finally, challenges and future perspectives for applications of MNMPs as theranostic nanomaterials are discussed.
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Affiliation(s)
- Yichen Xu
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Pauwelstr. 30, 52074 Aachen, Germany
| | - Huabo Zheng
- Department of Cardiology, Pulmonology, Angiology, and Intensive Care, University Hospital, RWTH Aachen, Pauwelstr. 30, 52074 Aachen, Germany
| | - David Schumacher
- Department of Anesthesiology, University Hospital, RWTH Aachen, 52074 Aachen, Germany
| | - Elisa Anamaria Liehn
- Department of Intensive Care Medicine, University Hospital, RWTH Aachen, Pauwelstr. 30, 52074 Aachen, Germany.,Department of Cardiology, Pulmonology, Angiology, and Intensive Care, University Hospital, RWTH Aachen, Pauwelstr. 30, 52074 Aachen, Germany.,Department of Pathology, Institute of Pathology "Victor Babes", Splaiul Independentei nr. 99-101, Sector 5, 050096 Bucharest, Romania
| | - Ioana Slabu
- Institute of Applied Medical Engineering, Helmholtz Institute, Medical Faculty, RWTH Aachen, Pauwelstr. 20, 52074 Aachen, Germany
| | - Mihaela Rusu
- Department of Pathology, Institute of Pathology "Victor Babes", Splaiul Independentei nr. 99-101, Sector 5, 050096 Bucharest, Romania.,Institute for Molecular Cardiovascular Research (IMCAR), University Hospital, RWTH Aachen, Pauwelstr. 30, 52074 Aachen, Germany
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7
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Yin D, Zhang J, Li W, Fu Y. Hyaluronic Acid-Guided Synthesis of Pd Nanocatalysts for Transfer Hydrogenation of 4-Nitrophenol. Catal Letters 2020. [DOI: 10.1007/s10562-020-03455-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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8
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Aminodextran Coated CoFe 2O 4 Nanoparticles for Combined Magnetic Resonance Imaging and Hyperthermia. NANOMATERIALS 2020; 10:nano10112182. [PMID: 33147727 PMCID: PMC7692372 DOI: 10.3390/nano10112182] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 10/29/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023]
Abstract
Aminodextran (AMD) coated magnetic cobalt ferrite nanoparticles are synthesized via electrostatic adsorption of aminodextran onto magnetic nanoparticles and their potential theranostic application is evaluated. The uncoated and aminodextran-coated nanoparticles are characterized to determine their hydrodynamic size, morphology, chemical composition, zeta potential and magnetization. The aminodextran containing cobalt ferrite nanoparticles of nanometer size are positively charged in the pH range from 3 to 9 and exhibit saturation magnetization of 50 emu/g. The magnetic resonance imaging (MRI) indicates capability for diagnostics and a reduction in intensity with an increase in nanoparticle amount. The hyperthermia capability of the prepared particles shows their potential to generate suitable local heat for therapeutic purposes. There is a rise of 7 °C and 9 °C at 327 kHz and 981 kHz respectively and specific absorption rates (SAR) of aminodextran-coated nanoparticles are calculated to be 259 W/g and 518 W/g at the given frequencies larger than uncoated nanoparticles (0.02 W/g). The development of novel aminodextran coated magnetic cobalt ferrite nanoparticles has significant potential to enable and improve personalized therapy regimens, targeted cancer therapies and ultimately to overcome the prevalence of nonessential and overdosing of healthy tissues and organs.
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9
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Inductive calorimetric assessment of iron oxide nano-octahedrons for magnetic fluid hyperthermia. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125210] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Heydari Sheikh Hossein H, Jabbari I, Zarepour A, Zarrabi A, Ashrafizadeh M, Taherian A, Makvandi P. Functionalization of Magnetic Nanoparticles by Folate as Potential MRI Contrast Agent for Breast Cancer Diagnostics. Molecules 2020; 25:E4053. [PMID: 32899812 PMCID: PMC7570917 DOI: 10.3390/molecules25184053] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/01/2020] [Accepted: 09/03/2020] [Indexed: 12/22/2022] Open
Abstract
In recent years, the intrinsic magnetic properties of magnetic nanoparticles (MNPs) have made them one of the most promising candidates for magnetic resonance imaging (MRI). This study aims to evaluate the effect of different coating agents (with and without targeting agents) on the magnetic property of MNPs. In detail, iron oxide nanoparticles (IONPs) were prepared by the polyol method. The nanoparticles were then divided into two groups, one of which was coated with silica (SiO2) and hyperbranched polyglycerol (HPG) (SPION@SiO2@HPG); the other was covered by HPG alone (SPION@HPG). In the following section, folic acid (FA), as a targeting agent, was attached on the surface of nanoparticles. Physicochemical properties of nanostructures were characterized using Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and a vibrating sample magnetometer (VSM). TEM results showed that SPION@HPG was monodispersed with the average size of about 20 nm, while SPION@SiO2@HPG had a size of about 25 nm. Moreover, HPG coated nanoparticles had much lower magnetic saturation than the silica coated ones. The MR signal intensity of the nanostructures showed a relation between increasing the nanoparticle concentrations inside the MCF-7 cells and decreasing the signal related to the T2 relaxation time. The comparison of coating showed that SPION@SiO2@HPG (with/without a targeting agent) had significantly higher r2 value in comparison to Fe3O4@HPG. Based on the results of this study, the Fe3O4@SiO2@HPG-FA nanoparticles have shown the best magnetic properties, and can be considered promising contrast agents for magnetic resonance imaging applications.
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Affiliation(s)
- Hamid Heydari Sheikh Hossein
- Department of Biotechnology, Faculty of Biological Sciences and Technology, University of Isfahan, Isfahan 81746-73441, Iran; (H.H.S.H.); (A.Z.)
| | - Iraj Jabbari
- Faculty of Physics, University of Isfahan, Isfahan 81746-73441, Iran; (I.J.); (A.T.)
| | - Atefeh Zarepour
- Department of Biotechnology, Faculty of Biological Sciences and Technology, University of Isfahan, Isfahan 81746-73441, Iran; (H.H.S.H.); (A.Z.)
| | - Ali Zarrabi
- Department of Biotechnology, Faculty of Biological Sciences and Technology, University of Isfahan, Isfahan 81746-73441, Iran; (H.H.S.H.); (A.Z.)
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956 Istanbul, Turkey
| | - Milad Ashrafizadeh
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz 51666-16471, Iran;
| | - Afrooz Taherian
- Faculty of Physics, University of Isfahan, Isfahan 81746-73441, Iran; (I.J.); (A.T.)
| | - Pooyan Makvandi
- Istituto Italiano di Tecnologia, Centre for Micro-BioRobotics, viale Rinaldo Piaggio 34, 56025 Pontedera, Pisa, Italy
- Department of Medical Nanotechnology, Faculty of Advanced, Technologies in Medicine, Iran University of Medical Sciences, Tehran 14496-14535, Iran
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11
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Zhao JA, Ren FD. Theoretical investigation into the cooperativity effect of 1,4-dimethoxy-D-glucosamine complex with Na + and H 2O. J Mol Model 2020; 26:203. [PMID: 32648117 DOI: 10.1007/s00894-020-04461-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 06/28/2020] [Indexed: 10/23/2022]
Abstract
In order to explore the essence of the hydration process of chitin or chitosan in the presence of cation, the cooperativity effects between the H-bonding and Na+···molecule interactions in the 1,4-dimethoxy-D-glucosamine (DMGA) complexes with H2O and Na+ were investigated at the B3LYP/6-311++G(d,p), M06-2X/6-311++G(2df,2p), and ωB97X-D/6-311++G(2df,2p) levels. The result shows that the complexes in which Na+ or H2O is bonded simultaneously to the -NH and -OH groups connected to the C3 atom of DMGA are the most stable. The cooperativity and anti-cooperativity effects occur in DMGA···H2O···DMGA and DMGA···Na+···H2O, while only the cooperativities are confirmed in DMGA···Na+···DMGA. The cooperativity occurs in the DMGA···Na+···H2O complexes without the hydration, while the anti-cooperativity occurs in those with the hydration. Furthermore, the cooperativity and anti-cooperativity in DMGA···Na+···H2O are far stronger than those in DMGA···Na+···DMGA or DMGA···H2O···DMGA. Therefore, a deduction is given that the cooperativity and anti-cooperativity effects play an important role in the hydration of chitin or chitosan in the presence of Na+. When only Na+ is linked with -OH and -NH groups of chitosan or chitin, due to the cooperativity effect, the hydration does not occur. When both Na+ and H2O are linked with -OH and -NH groups, the anti-cooperativities are dominant in controlling of the aggregation process of Na+, H2O, chitosan, and chitin, leading to the possible hydration. Atoms in molecules (AIM) analysis confirms the cooperativity and anti-cooperativity effects. Graphical abstract.
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Affiliation(s)
- Jin-An Zhao
- Department of Environment and Security Engineering, Taiyuan institute of technology, Taiyuan, 030008, People's Republic of China.
| | - Fu-de Ren
- School of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, People's Republic of China
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12
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Ferjaoui Z, Nahle S, Chang CS, Ghanbaja J, Joubert O, Schneider R, Ferrari L, Gaffet E, Alem H. Layer-by-Layer Self-Assembly of Polyelectrolytes on Superparamagnetic Nanoparticle Surfaces. ACS OMEGA 2020; 5:4770-4777. [PMID: 32201762 PMCID: PMC7081293 DOI: 10.1021/acsomega.9b02963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 02/10/2020] [Indexed: 06/10/2023]
Abstract
Designing and manufacturing multifunctional nanoparticles (NPs) are of considerable interest for both academic and industrial research. Among NPs used in this field, iron oxide NPs show low toxicity compared to metallic ones and are thus of high interest for biomedical applications. In this work, superparamagnetic Fe3-δO4-based core/shell NPs were successfully prepared and characterized by the combination of different techniques, and their physical properties were investigated. We demonstrate the efficiency of the layer-by-layer process to graft polyelectrolytes on the surface of iron oxide NPs. The influence of the polyelectrolyte chain configuration on the magnetic properties of the Fe3-δO4/polymer core/shell NPs was enlightened. The simple and fast process described in this work is efficient for the grafting of polyelectrolytes from surfaces, and thus, derived Fe3-δO4 NPs display both the physical properties of the core and of the macromolecular shell. Finally, the cytotoxicity toward the human THP-1 monocytic cell line of the core/shell NPs was assessed. The results showed that the polymer-capped Fe3-δO4 NPs exhibited almost no toxicity after 24 h of exposure at concentrations up to 25 μg mL-1. Our results show that these smart superparamagnetic nanocarriers with stealth properties are promising for applications in multimodal cancer therapy, including drug delivery.
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Affiliation(s)
- Zied Ferjaoui
- Institut
Jean Lamour (UMR 7198), Université
de Lorraine, CNRS, Campus
Artem 2 allée André Guinier BP 50840,
F-54011 Nancy Cedex, France
| | - Sara Nahle
- Institut
Jean Lamour (UMR 7198), Université
de Lorraine, CNRS, Campus
Artem 2 allée André Guinier BP 50840,
F-54011 Nancy Cedex, France
| | - Crosby Soon Chang
- Institut
Jean Lamour (UMR 7198), Université
de Lorraine, CNRS, Campus
Artem 2 allée André Guinier BP 50840,
F-54011 Nancy Cedex, France
| | - Jaafar Ghanbaja
- Institut
Jean Lamour (UMR 7198), Université
de Lorraine, CNRS, Campus
Artem 2 allée André Guinier BP 50840,
F-54011 Nancy Cedex, France
| | - Olivier Joubert
- Institut
Jean Lamour (UMR 7198), Université
de Lorraine, CNRS, Campus
Artem 2 allée André Guinier BP 50840,
F-54011 Nancy Cedex, France
| | - Raphaël Schneider
- Laboratoire
Réactions et Génie des Procédés, Université de Lorraine, CNRS, LRGP, F-54000 Nancy, France
| | - Luc Ferrari
- Institut
Jean Lamour (UMR 7198), Université
de Lorraine, CNRS, Campus
Artem 2 allée André Guinier BP 50840,
F-54011 Nancy Cedex, France
| | - Eric Gaffet
- Institut
Jean Lamour (UMR 7198), Université
de Lorraine, CNRS, Campus
Artem 2 allée André Guinier BP 50840,
F-54011 Nancy Cedex, France
| | - Halima Alem
- Institut
Jean Lamour (UMR 7198), Université
de Lorraine, CNRS, Campus
Artem 2 allée André Guinier BP 50840,
F-54011 Nancy Cedex, France
- Institut
Universitaire de France, 75005 Paris, France
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13
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Hobson NJ, Weng X, Ashford M, Thanh NT, Schätzlein AG, Uchegbu IF. Facile aqueous, room temperature preparation of high transverse relaxivity clustered iron oxide nanoparticles. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Costa F, Jardim KV, Palomec-Garfias AF, Cáceres-Vélez PR, Chaker JA, Medeiros AMM, Moya SE, Sousa MH. Highly Magnetizable Crosslinked Chloromethylated Polystyrene-Based Nanocomposite Beads for Selective Molecular Separation of 4-Aminobenzoic Acid. ACS OMEGA 2019; 4:5640-5649. [PMID: 31459718 PMCID: PMC6648915 DOI: 10.1021/acsomega.9b00142] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/06/2019] [Indexed: 06/10/2023]
Abstract
In this work, we describe the preparation and characterization of highly magnetizable chloromethylated polystyrene-based nanocomposite beads. For synthesis optimization, acid-resistant core-shelled maghemite (γ-Fe2O3) nanoparticles are coated with sodium oleate and directly incorporated into the organic medium during a suspension polymerization process. A crosslinking agent, ethylene glycol dimethacrylate, is used for copolymerization with 4-vinylbenzyl chloride to increase the resistance of the microbeads against leaching. X-ray diffraction, inductively coupled plasma atomic emission spectroscopy, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, and optical microscopy are used for bead characterization. The beads form a magnetic composite consisting of ∼500 nm-sized crosslinked polymeric microspheres, embedding ∼8 nm γ-Fe2O3 nanoparticles. This nanocomposite shows large room temperature magnetization (∼24 emu/g) due to the high content of maghemite (∼45 wt %) and resistance against leaching even in acidic media. Moreover, the presence of superficial chloromethyl groups is probed by Fourier transform infrared and X-ray photoelectron spectroscopy. The nanocomposite beads displaying chloromethyl groups can be used to selectively remove aminated compounds that are adsorbed on the beads, as is shown here for the molecular separation of 4-aminobenzoic acid from a mixture with benzoic acid. The high magnetization of the composite beads makes them suitable for in situ molecular separations in environmental and biological applications.
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Affiliation(s)
- Fábio
T. Costa
- Green
Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
| | - Katiúscia V. Jardim
- Green
Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
| | | | | | - Juliano A. Chaker
- Green
Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
| | - Anderson M. M.
S. Medeiros
- Laboratoire
de Chimie des Polymères Organiques, Universitè de Bordeaux, UMR5629, CNRS—Bordeaux INP—ENSCBP, 16 Avenue Pey-Berland, 33607 Pessac, Cedex, France
| | - Sergio E. Moya
- Soft
Matter Nanotechnology Laboratory, CIC biomaGUNE, San Sebastián, Guip 20009, Spain
| | - Marcelo H. Sousa
- Green
Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
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15
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Continuously Variable Regulation of the Speed of Bubble‐Propelled Janus Microcapsule Motors Based on Salt‐Responsive Polyelectrolyte Brushes. Chem Asian J 2019; 14:2450-2455. [DOI: 10.1002/asia.201801716] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/15/2018] [Indexed: 12/31/2022]
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Jardim KV, Palomec-Garfias AF, Andrade BYG, Chaker JA, Báo SN, Márquez-Beltrán C, Moya SE, Parize AL, Sousa MH. Novel magneto-responsive nanoplatforms based on MnFe 2O 4 nanoparticles layer-by-layer functionalized with chitosan and sodium alginate for magnetic controlled release of curcumin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:184-195. [PMID: 30184741 DOI: 10.1016/j.msec.2018.06.039] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 05/22/2018] [Accepted: 06/18/2018] [Indexed: 02/08/2023]
Abstract
Remotely assisted drug delivery by means of magnetic biopolymeric nanoplatforms has been utilized as an important tool to improve the delivery/release of hydrophobic drugs and to address their low cargo capacity. In this work, MnFe2O4 magnetic nanoparticles (MNPs) were synthesized by thermal decomposition, coated with citrate and then functionalized with the layer-by-layer (LbL) assembly of polyelectrolyte multilayers, with chitosan as polycation and sodium alginate as polyanion. Simultaneous conductimetric and potentiometric titrations were employed to optimize the LbL deposition and to enhance the loading capacity of nanoplatforms for curcumin, a hydrophobic drug used in cancer treatment. ~200 nm sized biopolymer platforms with ~12 nm homogeneously embedded MNPs were obtained and characterized by means of XRD, HRTEM, DLS, TGA, FTIR, XPS and fluorescence spectroscopy techniques to access structural, morphological and surface properties, to probe biopolymer functionalization and to quantify drug-loading. Charge reversals (±30 mV) after each deposition confirmed polyelectrolyte adsorption and a stable LbL assembly. Magnetic interparticle interaction was reduced in the biopolymeric structure, hinting at an optimized performance in magnetic hyperthermia for magneto-assisted drug release applications. Curcumin was encapsulated, resulting in an enhanced payload (~100 μg/mg). Nanocytotoxicity assays showed that the biopolymer capping enhanced the biocompatibility of nanoplatforms, maintaining entrapped curcumin. Our results indicate the potential of synthesized nanoplatforms as an alternative way of remotely delivering/releasing curcumin for medical purposes, upon application of an alternating magnetic field, demonstrating improved efficiency and reduced toxicity.
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Affiliation(s)
| | | | - Bárbara Yasmin Garcia Andrade
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF 70910-900, Brazil
| | | | - Sônia Nair Báo
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF 70910-900, Brazil
| | - César Márquez-Beltrán
- Instituto de Física - Benemérita Universidad Autónoma de Puebla, Puebla, Pue 72570, Mexico
| | - Sergio Enrique Moya
- Soft Matter Nanotechnology Laboratory, CIC biomaGUNE, San Sebastián, Guip 20009, Spain
| | - Alexandre Luis Parize
- Polimat, Grupo de Estudos em Materiais Poliméricos, Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
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