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Talaikis M, Mikoliunaite L, Gkouzi AM, Petrikaitė V, Stankevičius E, Drabavičius A, Selskis A, Juškėnas R, Niaura G. Multiwavelength SERS of Magneto-Plasmonic Nanoparticles Obtained by Combined Laser Ablation and Solvothermal Methods. ACS OMEGA 2023; 8:49396-49405. [PMID: 38162725 PMCID: PMC10753541 DOI: 10.1021/acsomega.3c08007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/09/2023] [Accepted: 11/23/2023] [Indexed: 01/03/2024]
Abstract
The present study introduces a novel method for the synthesis of magneto-plasmonic nanoparticles (MPNPs) with enhanced functionality for surface-enhanced Raman scattering (SERS) applications. By employing pulsed laser ablation in liquid (PLAL) to synthesize plasmonic nanoparticles and wet chemistry to synthesize magnetic nanoparticles, we successfully fabricated chemically pure hybrid Fe3O4@Au and Fe3O4@Ag nanoparticles. We demonstrated a straightforward approach of an electrostatic attachment of the plasmonic and magnetic parts using positively charged polyethylenimine. The MPNPs displayed high SERS sensitivity and reproducibility, and the magnetic part allowed for the controlled separation of the nanoparticles from the reaction mixture, their subsequent concentration, and their precise deposition onto a specified surface area. Additionally, we fabricated alloy based MPNPs from AgxAu100-x (x = 50 and 80 wt %) targets with distinct localized surface plasmon resonance (LSPR) wavelengths. The compositions, morphologies, and optical properties of the nanoparticles were characterized by using transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), UV-vis spectroscopy, and multiwavelength Raman spectroscopy. A standard SERS marker, 4-mercaptobenzoic acid (4-MBA), validated the enhancement properties of the MPNPs and found an enhancement factor of 2 × 108 for the Fe3O4@Ag nanoparticles at 633 nm excitation. Lastly, we applied MPNP-enhanced Raman spectroscopy for the analysis of the biologically relevant molecule adenine and found a limit of detection of 10-7 M at 785 nm excitation. The integration of PLAL and wet chemical methods enabled the relatively fast and cost-effective production of MPNPs characterized by high SERS sensitivity and signal reproducibility that are required in various fields, including biomedicine, food safety, materials science, security, and defense.
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Affiliation(s)
- Martynas Talaikis
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Saulėtekio Av. 3, LT-10257 Vilnius, Lithuania
| | - Lina Mikoliunaite
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Saulėtekio Av. 3, LT-10257 Vilnius, Lithuania
- Department
of Physical Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT-03225 Vilnius, Lithuania
| | - Aikaterini-Maria Gkouzi
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Saulėtekio Av. 3, LT-10257 Vilnius, Lithuania
| | - Vita Petrikaitė
- Department
of Laser Technologies, Center for Physical
Sciences and Technology (FTMC), Savanorių Av. 231, LT-02300 Vilnius, Lithuania
| | - Evaldas Stankevičius
- Department
of Laser Technologies, Center for Physical
Sciences and Technology (FTMC), Savanorių Av. 231, LT-02300 Vilnius, Lithuania
| | - Audrius Drabavičius
- Department
of Characterization of Materials Structure, Center for Physical Sciences and Technology (FTMC), Saulėtekio Av. 3, LT-10257 Vilnius, Lithuania
| | - Algirdas Selskis
- Department
of Characterization of Materials Structure, Center for Physical Sciences and Technology (FTMC), Saulėtekio Av. 3, LT-10257 Vilnius, Lithuania
| | - Remigijus Juškėnas
- Department
of Characterization of Materials Structure, Center for Physical Sciences and Technology (FTMC), Saulėtekio Av. 3, LT-10257 Vilnius, Lithuania
| | - Gediminas Niaura
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Saulėtekio Av. 3, LT-10257 Vilnius, Lithuania
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Miola M, Multari C, Kostevšek N, Gerbaldo R, Laviano F, Verné E. Tannic-acid-mediated synthesis and characterization of magnetite-gold nanoplatforms for photothermal therapy. Nanomedicine (Lond) 2023; 18:1331-1342. [PMID: 37800456 DOI: 10.2217/nnm-2023-0134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023] Open
Abstract
Aim: The design of new hybrid nanoplatforms (HNPs) through the innovative and eco-friendly use of tannic acid (TA) for the synthesis and stabilization of the nanoplatforms. Materials & methods: The size, morphology, composition and magnetic and plasmonic properties of HNPs were investigated together with their ability to generate heat under laser irradiation and the hemotoxicity to explore their potential use for biomedical applications. Results & conclusion: The use of TA allowed the synthesis of the HNPs by adopting a simple and green method. The HNPs preserved the peculiar properties of both magnetic and plasmonic nanoparticles and did not show any hemotoxic effect.
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Affiliation(s)
- Marta Miola
- Department of Applied Science & Technology, Politecnico di Torino, Torino, 10129, Italy
| | - Cristina Multari
- Department of Applied Science & Technology, Politecnico di Torino, Torino, 10129, Italy
| | - Nina Kostevšek
- Department for Nanostructured Materials, Jožef Stefan Institute, Ljubljana, 1000, Slovenia
| | - Roberto Gerbaldo
- Department of Applied Science & Technology, Politecnico di Torino, Torino, 10129, Italy
| | - Francesco Laviano
- Department of Applied Science & Technology, Politecnico di Torino, Torino, 10129, Italy
| | - Enrica Verné
- Department of Applied Science & Technology, Politecnico di Torino, Torino, 10129, Italy
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Miola M, Multari C, Vernè E. Iron Oxide-Au Magneto-Plasmonic Heterostructures: Advances in Their Eco-Friendly Synthesis. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7036. [PMID: 36234377 PMCID: PMC9573543 DOI: 10.3390/ma15197036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/06/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
In recent years, nanotechnologies have attracted considerable interest, especially in the biomedical field. Among the most investigated particles, magnetic based on iron oxides and Au nanoparticles gained huge interest for their magnetic and plasmonic properties, respectively. These nanoparticles are usually produced starting from processes and reagents that can be the cause of potential human health and environmental concerns. For this reason, there is a need to develop simple, green, low-cost, and non-toxic synthesis methods and reagents. This review aims at providing an overview of the most recently developed processes to produce iron oxide magnetic nanoparticles, Au nanoparticles, and their magneto-plasmonic heterostructures using eco-friendly approaches, focusing the attention on the microorganisms and plant-assisted syntheses and showing the first results of the development of magneto-plasmonic heterostructures.
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Tian C, Tang Z, Hou Y, Mushtaq A, Naz S, Yu Z, Farheen J, Iqbal MZ, Kong X. Facile Synthesis of Multifunctional Magnetoplasmonic Au-MnO Hybrid Nanocomposites for Cancer Theranostics. NANOMATERIALS 2022; 12:nano12081370. [PMID: 35458078 PMCID: PMC9027802 DOI: 10.3390/nano12081370] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/03/2022] [Accepted: 04/12/2022] [Indexed: 12/12/2022]
Abstract
Significant attention is paid to the design of magnetoplasmonic nanohybrids, which exploit synergistic properties for biomedical applications. Here, a facile method was employed to prepare plasmonic magnetic Au-MnO heterostructured hybrid nanoparticles for imaging-guided photothermal therapy of cancers in vitro, with the view to reducing the serious drawbacks of chemotherapy and gadolinium-based contrast agents. The biocompatibility of the prepared Au-MnO nanocomposites was further enhanced by Food and Drug Administration (FDA)-approved triblock copolymers Pluronic® F-127 and chitosan oligosaccharide (COS), with complementary support to enhance the absorption in the near-infrared (NIR) region. In addition, synthesized COS-PF127@Au-MnO nanocomposites exhibited promising contrast enhancement in T1 MR imaging with a good r1 relaxivity value (1.2 mM-1 s-1), demonstrating a capable substitute to Gd-based toxic contrast agents. In addition, prepared COS-PF127@Au-MnO hybrid nanoparticles (HNPs) produced sufficient heat (62 °C at 200 μg/mL) to ablate cancerous cells upon 808 nm laser irradiation, inducing cell toxicity, and apoptosis. The promising diagnostic and photothermal therapeutic performance demonstrated the appropriateness of the COS-PF127@Au-MnO HNPs as a potential theranostic agent.
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Affiliation(s)
- Cong Tian
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; (C.T.); (Z.T.); (Y.H.); (A.M.); (J.F.)
- Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Hangzhou 310018, China
| | - Zhe Tang
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; (C.T.); (Z.T.); (Y.H.); (A.M.); (J.F.)
- Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Hangzhou 310018, China
| | - Yike Hou
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; (C.T.); (Z.T.); (Y.H.); (A.M.); (J.F.)
- Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Hangzhou 310018, China
| | - Asim Mushtaq
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; (C.T.); (Z.T.); (Y.H.); (A.M.); (J.F.)
- Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Hangzhou 310018, China
| | - Shafaq Naz
- Department of Mathematics, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan;
| | - Zhangsen Yu
- Laboratory of Nanomedicine, Medical Science Research Center, School of Medicine, Shaoxing University, Shaoxing 312000, China;
| | - Jabeen Farheen
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; (C.T.); (Z.T.); (Y.H.); (A.M.); (J.F.)
- Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Hangzhou 310018, China
| | - Muhammad Zubair Iqbal
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; (C.T.); (Z.T.); (Y.H.); (A.M.); (J.F.)
- Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Hangzhou 310018, China
- Correspondence: (M.Z.I.); (X.K.)
| | - Xiangdong Kong
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; (C.T.); (Z.T.); (Y.H.); (A.M.); (J.F.)
- Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Hangzhou 310018, China
- Correspondence: (M.Z.I.); (X.K.)
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Miola M, Vernè E. In situ reduction of Ag on magnetic nanoparticles with gallic acid: effect of the synthesis parameters on morphology. Nanomedicine (Lond) 2022; 17:499-511. [PMID: 35293220 DOI: 10.2217/nnm-2021-0479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Aim: Synthesis of Fe3O4-Ag composite nanoparticles (NPs) by a new in situ reduction of Ag NPs on the surface of Fe3O4 NPs using gallic acid as a reducing agent. Materials & methods: The influence of process parameters on NP morphology and functionalization was evaluated by means of field-emission scanning/scanning transmission electron microscopy and Fourier-transform IR spectroscopy. Results & conclusion: The synthesis conditions affected the morphology of the obtained NPs, evidence of the formation of polydispersed aggregates, nanoflower-like or nanodumbbell nanocomposites. In particular, well-defined nanodumbbells were obtained in aqueous media, with an NP/gallic acid ratio of 10:1, while the presence of a silica shell did not improve the morphology of Ag NPs nucleated on the Fe3O4 core.
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Affiliation(s)
- Marta Miola
- Department of Applied Science & Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy.,PolitoBioMED Lab, Politecnico di Torino, Politecnico di Torino, Via Piercarlo Boggio 59, Torino, 10138, Italy
| | - Enrica Vernè
- Department of Applied Science & Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy.,PolitoBioMED Lab, Politecnico di Torino, Politecnico di Torino, Via Piercarlo Boggio 59, Torino, 10138, Italy
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Tran HV, Ngo NM, Medhi R, Srinoi P, Liu T, Rittikulsittichai S, Lee TR. Multifunctional Iron Oxide Magnetic Nanoparticles for Biomedical Applications: A Review. MATERIALS (BASEL, SWITZERLAND) 2022; 15:503. [PMID: 35057223 PMCID: PMC8779542 DOI: 10.3390/ma15020503] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/26/2021] [Accepted: 12/29/2021] [Indexed: 01/02/2023]
Abstract
Due to their good magnetic properties, excellent biocompatibility, and low price, magnetic iron oxide nanoparticles (IONPs) are the most commonly used magnetic nanomaterials and have been extensively explored in biomedical applications. Although magnetic IONPs can be used for a variety of applications in biomedicine, most practical applications require IONP-based platforms that can perform several tasks in parallel. Thus, appropriate engineering and integration of magnetic IONPs with different classes of organic and inorganic materials can produce multifunctional nanoplatforms that can perform several functions simultaneously, allowing their application in a broad spectrum of biomedical fields. This review article summarizes the fabrication of current composite nanoplatforms based on integration of magnetic IONPs with organic dyes, biomolecules (e.g., lipids, DNAs, aptamers, and antibodies), quantum dots, noble metal NPs, and stimuli-responsive polymers. We also highlight the recent technological advances achieved from such integrated multifunctional platforms and their potential use in biomedical applications, including dual-mode imaging for biomolecule detection, targeted drug delivery, photodynamic therapy, chemotherapy, and magnetic hyperthermia therapy.
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Affiliation(s)
- Hung-Vu Tran
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA; (H.-V.T.); (N.M.N.); (R.M.); (T.L.); (S.R.)
| | - Nhat M. Ngo
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA; (H.-V.T.); (N.M.N.); (R.M.); (T.L.); (S.R.)
| | - Riddhiman Medhi
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA; (H.-V.T.); (N.M.N.); (R.M.); (T.L.); (S.R.)
| | - Pannaree Srinoi
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
| | - Tingting Liu
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA; (H.-V.T.); (N.M.N.); (R.M.); (T.L.); (S.R.)
| | - Supparesk Rittikulsittichai
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA; (H.-V.T.); (N.M.N.); (R.M.); (T.L.); (S.R.)
| | - T. Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA; (H.-V.T.); (N.M.N.); (R.M.); (T.L.); (S.R.)
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Pivetta TP, Botteon CEA, Ribeiro PA, Marcato PD, Raposo M. Nanoparticle Systems for Cancer Phototherapy: An Overview. NANOMATERIALS 2021; 11:nano11113132. [PMID: 34835896 PMCID: PMC8625970 DOI: 10.3390/nano11113132] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/13/2021] [Accepted: 11/16/2021] [Indexed: 12/24/2022]
Abstract
Photodynamic therapy (PDT) and photothermal therapy (PTT) are photo-mediated treatments with different mechanisms of action that can be addressed for cancer treatment. Both phototherapies are highly successful and barely or non-invasive types of treatment that have gained attention in the past few years. The death of cancer cells because of the application of these therapies is caused by the formation of reactive oxygen species, that leads to oxidative stress for the case of photodynamic therapy and the generation of heat for the case of photothermal therapies. The advancement of nanotechnology allowed significant benefit to these therapies using nanoparticles, allowing both tuning of the process and an increase of effectiveness. The encapsulation of drugs, development of the most different organic and inorganic nanoparticles as well as the possibility of surfaces' functionalization are some strategies used to combine phototherapy and nanotechnology, with the aim of an effective treatment with minimal side effects. This article presents an overview on the use of nanostructures in association with phototherapy, in the view of cancer treatment.
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Affiliation(s)
- Thais P. Pivetta
- CEFITEC, Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal;
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal;
| | - Caroline E. A. Botteon
- GNanoBio, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-900, Brazil; (C.E.A.B.); (P.D.M.)
| | - Paulo A. Ribeiro
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal;
| | - Priscyla D. Marcato
- GNanoBio, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-900, Brazil; (C.E.A.B.); (P.D.M.)
| | - Maria Raposo
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal;
- Correspondence: ; Fax: +351-21-294-85-49
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Monteserín M, Larumbe S, Martínez AV, Burgui S, Francisco Martín L. Recent Advances in the Development of Magnetic Nanoparticles for Biomedical Applications. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:2705-2741. [PMID: 33653440 DOI: 10.1166/jnn.2021.19062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The unique properties of magnetic nanoparticles have led them to be considered materials with significant potential in the biomedical field. Nanometric size, high surface-area ratio, ability to function at molecular level, exceptional magnetic and physicochemical properties, and more importantly, the relatively easy tailoring of all these properties to the specific requirements of the different biomedical applications, are some of the key factors of their success. In this paper, we will provide an overview of the state of the art of different aspects of magnetic nanoparticles, specially focusing on their use in biomedicine. We will explore their magnetic properties, synthetic methods and surface modifications, as well as their most significative physicochemical properties and their impact on the in vivo behaviour of these particles. Furthermore, we will provide a background on different applications of magnetic nanoparticles in biomedicine, such as magnetic drug targeting, magnetic hyperthermia, imaging contrast agents or theranostics. Besides, current limitations and challenges of these materials, as well as their future prospects in the biomedical field will be discussed.
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Affiliation(s)
- Maria Monteserín
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
| | - Silvia Larumbe
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
| | - Alejandro V Martínez
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
| | - Saioa Burgui
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
| | - L Francisco Martín
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
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Mukha I, Chepurna O, Vityuk N, Khodko A, Storozhuk L, Dzhagan V, Zahn DR, Ntziachristos V, Chmyrov A, Ohulchanskyy TY. Multifunctional Magneto-Plasmonic Fe 3O 4/Au Nanocomposites: Approaching Magnetophoretically-Enhanced Photothermal Therapy. NANOMATERIALS 2021; 11:nano11051113. [PMID: 33923050 PMCID: PMC8147065 DOI: 10.3390/nano11051113] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 11/25/2022]
Abstract
Magneto-plasmonic nanocomposites can possess properties inherent to both individual components (iron oxide and gold nanoparticles) and are reported to demonstrate high potential in targeted drug delivery and therapy. Herein, we report on Fe3O4/Au magneto-plasmonic nanocomposites (MPNC) synthesized with the use of amino acid tryptophan via chemical and photochemical reduction of Au ions in the presence of nanosized magnetite. The magnetic field (MF) induced aggregation was accompanied by an increase in the absorption in the near-infrared (NIR) spectral region, which was demonstrated to provide an enhanced photothermal (PT) effect under NIR laser irradiation (at 808 nm). A possibility for therapeutic application of the MPNC was illustrated using cancer cells in vitro. Cultured HeLa cells were treated by MPNC in the presence of MF and without it, following laser irradiation and imaging using confocal laser scanning microscopy. After scanning laser irradiation of the MPNC/MF treated cells, a formation and rise of photothermally-induced microbubbles on the cell surfaces was observed, leading to a damage of the cell membrane and cell destruction. We conclude that the synthesized magneto-plasmonic Fe3O4/Au nanosystems exhibit magnetic field-induced reversible aggregation accompanied by an increase in NIR absorption, allowing for an opportunity to magnetophoretically control and locally enhance a NIR light-induced thermal effect, which holds high promise for the application in photothermal therapy.
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Affiliation(s)
- Iuliia Mukha
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 03164 Kyiv, Ukraine; (N.V.); (L.S.)
- Correspondence: (I.M.); (T.Y.O.)
| | - Oksana Chepurna
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;
| | - Nadiia Vityuk
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 03164 Kyiv, Ukraine; (N.V.); (L.S.)
| | - Alina Khodko
- Institute of Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine;
| | - Liudmyla Storozhuk
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 03164 Kyiv, Ukraine; (N.V.); (L.S.)
- Department of Physics & Astronomy, University College London Healthcare Biomagnetic and Nanomaterials Laboratory, London W1S 4BS, UK
| | - Volodymyr Dzhagan
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine;
| | - Dietrich R.T. Zahn
- Semiconductor Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany;
| | - Vasilis Ntziachristos
- Helmholtz Zentrum München, Institute of Biological and Medical Imaging, 85764 Neuherberg, Germany; (V.N.); (A.C.)
- School of Medicine, Technical University of Munich, 80333 Munich, Germany
| | - Andriy Chmyrov
- Helmholtz Zentrum München, Institute of Biological and Medical Imaging, 85764 Neuherberg, Germany; (V.N.); (A.C.)
- School of Medicine, Technical University of Munich, 80333 Munich, Germany
| | - Tymish Y. Ohulchanskyy
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;
- Correspondence: (I.M.); (T.Y.O.)
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