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Yu X, Yang T, Liu R, Wu D, Tian D, Zhou T, Yan H, He S, Zeng H. Simultaneous Enhancement of Magnetothermal and Photothermal Responses by Zn, Co Co-Doped Ferrite Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2205037. [PMID: 36336630 DOI: 10.1002/smll.202205037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/09/2022] [Indexed: 06/16/2023]
Abstract
Reducing nanoparticle (NP) dosage for hyperthermia therapy has remained a great challenge. In this work, efficiencies of alternating current (AC) magnetic field and near-infrared (NIR) heating are simultaneously enhanced by Zn and Co co-doping of magnetite NPs. The optimum magnetic anisotropy for maximized loss power under each magnetic field is achieved by tuning the doping concentration. The specific loss power of Zn0.3 Co0.08 Fe2.62 O4 @SiO2 NPs reaches 2428 W g-1 under an AC field of 27 kA m-1 at 430 kHz; 12 296 W g-1 under NIR laser irradiation at 808 nm and 2.5 W cm-2 ; and an unprecedented value of 14 724 W g-1 under dual mode. These values far exceed what has been achieved previously in iron oxide NPs. Ex vivo experiments on sacrificial mice show that while the NP dosage is substantially reduced to that used for magnetic resonance imaging, the surface body temperature of the mice reaches 50 °C after exposure to both AC field and laser irradiation under field parameters and laser intensity below safety limits. This nanoplatform is thus promising for multi-modal local hyperthermia therapy.
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Affiliation(s)
- Xiang Yu
- Department of Physics, Capital Normal University, Beijing, 100048, P. R. China
| | - Tianyu Yang
- Department of Physics, Capital Normal University, Beijing, 100048, P. R. China
| | - Ruoshui Liu
- Department of Physics, Capital Normal University, Beijing, 100048, P. R. China
| | - Di'an Wu
- Department of Physics, Capital Normal University, Beijing, 100048, P. R. China
| | - Daming Tian
- Department of Physics, Capital Normal University, Beijing, 100048, P. R. China
| | - Tianshi Zhou
- Department of Physics, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Haitao Yan
- Department of Physics, Capital Normal University, Beijing, 100048, P. R. China
| | - Shuli He
- Department of Physics, Capital Normal University, Beijing, 100048, P. R. China
| | - Hao Zeng
- Department of Physics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
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Koo TM, Ko MJ, Park BC, Kim MS, Kim YK. Fluorescent detection of dipicolinic acid as a biomarker in bacterial spores employing terbium ion-coordinated magnetite nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124870. [PMID: 33387720 DOI: 10.1016/j.jhazmat.2020.124870] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 06/12/2023]
Abstract
Anthrax is a bioterror agent because of its toxicity and the tolerance of its bacterial spores. Thus, researchers have attempted to develop various nanomaterials to detect dipicolinic acid (DPA), a biomarker of bacterial spores. Nanomaterials containing lanthanide ions have received considerable attention, owing to their potential to exhibit high sensitivity and selectivity in the detection of DPA via chelation with molecules. However, the fluorescent signals of the lanthanide complex are quenchable because the nanomaterials simultaneously absorb the excitation and emission light. For the precise detection of DPA, pure signals have to be obtained from the complex by alleviating the quenching effect of the nanomaterials. In this study, we develop a structure with terbium ion (Tb3+)-coordinated magnetite (Fe3O4) nanoparticle to detect DPA. Tb3+ can be detached from the magnetite during chelation with the DPA, and the complex can emit the unencumbered signals with improved detection limit through the application of a magnetic field. The detection system exhibits a significantly lower detection limit (5.4 nM) than the infectious dosage of anthrax (60 μM) with high selectivity and chemical stability. This study informs the improvement of detection limits via the separation of nanomaterials and lanthanide complex.
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Affiliation(s)
- Thomas Myeongseok Koo
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Min Jun Ko
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Bum Chul Park
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea; Brain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea
| | - Myeong Soo Kim
- Institute for High Technology Materials and Devices, Korea University, Seoul 02841, Republic of Korea
| | - Young Keun Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea; Brain Korea Center for Smart Materials and Devices, Korea University, Seoul 02841, Republic of Korea; Institute for High Technology Materials and Devices, Korea University, Seoul 02841, Republic of Korea.
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Hu Y, Liu W, Sun Y. Multiwavelength Phototactic Micromotor with Controllable Swarming Motion for "Chemistry-on-the-Fly". ACS APPLIED MATERIALS & INTERFACES 2020; 12:41495-41505. [PMID: 32825803 DOI: 10.1021/acsami.0c11443] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Artificial nano/micromotors that represent the next-generation automotive microdevices hold considerable promise in various potential applications. However, it is a great challenge to design light-powered micro/nanomotors with effective propulsion that can fulfill diverse tasks. Herein, a multilight-responsive micromotor is fabricated by in situ precipitation of photothermal Fe3O4 nanoparticles (NPs) onto different microparticles. The composites exhibit phototactic swarming movement by irradiation at 320-550 nm, which can be reversibly and remotely manipulated by irradiation position, "on/off" switch, and light intensity. The micromotor made of Fe3O4@poly(glycidyl methacrylate)/polystyrene (Fe3O4@PGS) core-shell particles presents a propulsion speed as high as 270 μm/s under ultraviolet (UV) irradiation. Using an array of experimental methods and numerical simulations, thermal convection mechanism is proposed for the propulsion. Namely, under light irradiation, the photogenerated heat on Fe3O4 NPs decreases the density of the irradiated spot, leading to the swarming motion of the composite particles propelled by a "hydrodynamic drag" toward the light spot. Then, Fe3O4@PGS is exploited as a platform for performing "chemistry-on-the-fly" using both the catalytic efficiency of Fe3O4 NPs and an immobilized enzyme (lipase). It is found that the propulsion increases the catalytic efficiency of Fe3O4 NPs for rhodamine B degradation by over 10 times under sunlight. Moreover, it is proved to accelerate the enzymatic reactions of lipase on Fe3O4@PGS in both aqueous and organic systems by more than 50%. Such a multiwavelength phototactic swimmer paves the way to the design of advanced micromotors for various applications, such as drug delivery, microsurgery, and sensing.
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Affiliation(s)
- Yang Hu
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Wei Liu
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Yan Sun
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Key Laboratory of Systems Bioengineering and Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin 300350, China
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Estelrich J, Busquets MA. Iron Oxide Nanoparticles in Photothermal Therapy. Molecules 2018; 23:E1567. [PMID: 29958427 PMCID: PMC6100614 DOI: 10.3390/molecules23071567] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 06/24/2018] [Accepted: 06/26/2018] [Indexed: 12/22/2022] Open
Abstract
Photothermal therapy is a kind of therapy based on increasing the temperature of tumoral cells above 42 °C. To this aim, cells must be illuminated with a laser, and the energy of the radiation is transformed in heat. Usually, the employed radiation belongs to the near-infrared radiation range. At this range, the absorption and scattering of the radiation by the body is minimal. Thus, tissues are almost transparent. To improve the efficacy and selectivity of the energy-to-heat transduction, a light-absorbing material, the photothermal agent, must be introduced into the tumor. At present, a vast array of compounds are available as photothermal agents. Among the substances used as photothermal agents, gold-based compounds are one of the most employed. However, the undefined toxicity of this metal hinders their clinical investigations in the long run. Magnetic nanoparticles are a good alternative for use as a photothermal agent in the treatment of tumors. Such nanoparticles, especially those formed by iron oxides, can be used in combination with other substances or used themselves as photothermal agents. The combination of magnetic nanoparticles with other photothermal agents adds more capabilities to the therapeutic system: the nanoparticles can be directed magnetically to the site of interest (the tumor) and their distribution in tumors and other organs can be imaged. When used alone, magnetic nanoparticles present, in theory, an important limitation: their molar absorption coefficient in the near infrared region is low. The controlled clustering of the nanoparticles can solve this drawback. In such conditions, the absorption of the indicated radiation is higher and the conversion of energy in heat is more efficient than in individual nanoparticles. On the other hand, it can be designed as a therapeutic system, in which the heat generated by magnetic nanoparticles after irradiation with infrared light can release a drug attached to the nanoparticles in a controlled manner. This form of targeted drug delivery seems to be a promising tool of chemo-phototherapy. Finally, the heating efficiency of iron oxide nanoparticles can be increased if the infrared radiation is combined with an alternating magnetic field.
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Affiliation(s)
- Joan Estelrich
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Avda., Joan XXIII, 27⁻31, 08028 Barcelona, Catalonia, Spain.
- Nstitut de Nanociència i Nanotecnologia, IN2UB, Facultat de Química, Diagonal 645, 08028 Barcelona, Catalonia, Spain.
| | - Maria Antònia Busquets
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Avda., Joan XXIII, 27⁻31, 08028 Barcelona, Catalonia, Spain.
- Nstitut de Nanociència i Nanotecnologia, IN2UB, Facultat de Química, Diagonal 645, 08028 Barcelona, Catalonia, Spain.
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Dong L, Zhang P, Xu X, Lei P, Du K, Zhang M, Wang D, Feng J, Li W, Zhang H. Simple construction of Cu 2-xS:Pt nanoparticles as nanotheranostic agent for imaging-guided chemo-photothermal synergistic therapy of cancer. NANOSCALE 2018; 10:10945-10951. [PMID: 29850761 DOI: 10.1039/c8nr02692k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Synergistic therapy has attracted intense attention in medical treatment because it can make up for the disadvantages of single therapy and greatly improve the efficacy of cancer treatment. However, it remains a challenge to build a simple system to achieve synergistic therapy. In this study, X-ray computed tomography (CT) imaging-guided chemo-photothermal synergistic therapy can be easily achieved by simple construction of Cu2-xS:Pt(0.3)/PVP nanoparticles (NPs). Cu2-xS:Pt(0.3)/PVP NPs can passively accumulate within the tumor sites, thus ensuring that many Cu2-xS:Pt(0.3)/PVP NPs are brought into the tumor cells, which can be confirmed by the results of cellular uptake, imaging, and nanoparticle biodistribution. It can be verified that the platinum ions can be released from Cu2-xS:Pt(0.3)/PVP NPs under 808 nm laser irradiation. Simultaneously, Pt(iv) ions are reduced to Pt(ii) ions by excess glutathione and then, they exhibit chemo-anticancer activities. In addition, Cu2-xS:Pt(0.3)/PVP NPs can be used as an effective photothermal agent. The results demonstrate that the efficient tumor growth inhibition effect can be realized from the mice treated with Cu2-xS:Pt(0.3)/PVP NPs under 808 nm laser irradiation by chemo-photothermal synergistic therapy. Furthermore, Cu2-xS:Pt(0.3)/PVP NPs can be thoroughly cleared through feces in a short time, showing high biosafety for further potential clinical translations.
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Affiliation(s)
- Lile Dong
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
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