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Zhang E, Shotbolt M, Chang CY, Scott-Vandeusen A, Chen S, Liang P, Radu D, Khizroev S. Controlling Action Potentials With Magnetoelectric Nanoparticles. Brain Stimul 2024; 17:S1935-861X(24)00149-9. [PMID: 39209064 DOI: 10.1016/j.brs.2024.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 08/06/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024] Open
Abstract
Non-invasive or minutely invasive and wireless brain stimulation that can target any region of the brain is an open problem in engineering and neuroscience with serious implications for the treatment of numerous neurological diseases. Despite significant recent progress in advancing new methods of neuromodulation, none has successfully replicated the efficacy of traditional wired stimulation and improved on its downsides without introducing new complications. Due to the capability to convert magnetic fields into local electric fields, MagnetoElectric NanoParticle (MENP) neuromodulation is a recently proposed framework based on new materials that can locally sensitize neurons to specific, low-strength alternating current (AC) magnetic fields (50Hz 1.7kOe field). However, the current research into this neuromodulation concept is at a very early stage, and the theoretically feasible game-changing advantages remain to be proven experimentally. To break this stalemate phase, this study leveraged understanding of the non-linear properties of MENPs and the nanoparticles' field interaction with the cellular microenvironment. Particularly, the applied magnetic field's strength and frequency were tailored to the M-H hysteresis loop of the nanoparticles. Furthermore, rectangular prisms instead of the more traditional "spherical" nanoparticle shapes were used to: (i) maximize the magnetoelectric effect and (ii) improve the nanoparticle-cell-membrane surface interface. Neuromodulation performance was evaluated in a series of exploratory in vitro experiments on 2446 rat hippocampus neurons. Linear mixed effect models were used to ensure the independence of samples by accounting for fixed adjacency effects in synchronized firing. Neural activity was measured over repeated 4-minute segments, containing 90 seconds of baseline measurements, 90 seconds of stimulation measurements, and 60 seconds of post stimulation measurements. 87.5% of stimulation attempts produced statistically significant (P < 0.05) changes in neural activity, with 58.3% producing large changes (P < 0.01). In negative controls using either zero or 1.7kOe-strength field without nanoparticles, no experiments produced significant changes in neural activity (P > 0.05 and P > 0.15 respectively). Furthermore, an exploratory analysis of a direct current (DC) magnetic field indicated that the DC field could be used with MENPs to inhibit neuron activity (P < 0.01). These experiments demonstrated the potential for magnetoelectric neuromodulation to offer a near one-to-one functionality match with conventional electrode stimulation without requiring surgical intervention or genetic modification to achieve success, instead relying on physical properties of these nanoparticles as "On/Off" control mechanisms. ONE-SENTENCE SUMMARY: This in vitro neural cell culture study explores how to exploit the non-linear and anisotropic properties of magnetoelectric nanoparticles for wireless neuromodulation, the importance of magnetic field strength and frequency matching for optimization, and demonstrates, for the first time, that magnetoelectric neuromodulation can inhibit neural responses.
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Affiliation(s)
- Elric Zhang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - Max Shotbolt
- Department of Biomedical Engineering, University of Miami, Coral Gables, FL, USA
| | - Chen-Yu Chang
- Department of Mechanical and Materials Engineering, Florida International University, Miami, FL, USA
| | | | - Shawnus Chen
- Department of Chemical, Environmental and Materials Engineering, Coral Gables, FL, University of Miami, USA
| | | | - Daniela Radu
- Department of Mechanical and Materials Engineering, Florida International University, Miami, FL, USA
| | - Sakhrat Khizroev
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA; The Miami Project to Cure Paralysis, Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, USA.
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Murali N, Rainu SK, Sharma A, Siddhanta S, Singh N, Betal S. Remotely Controlled Surface Charge Modulation of Magnetoelectric Nanogenerators for Swift and Efficient Drug Delivery. ACS OMEGA 2024; 9:28937-28950. [PMID: 38973906 PMCID: PMC11223158 DOI: 10.1021/acsomega.4c03825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 07/09/2024]
Abstract
We have developed a highly efficient technique of magnetically controlled swift loading and release of doxorubicin (DOX) drug using a magnetoelectric nanogenerator (MENG). Core-shell nanostructured MENG with a magnetostrictive core and piezoelectric shell act as field-responsive nanocarriers and possess the capability of field-triggered drug release in a cancerous environment. MENGs generate a surface electric dipole when subjected to a magnetic field due to the strain-mediated magnetoelectric effect. The capability of directional magnetic field-assisted modulation of the surface electrical dipole of MENG provides a mechanism to create/break ionic bonds with DOX molecules, which facilitates efficient drug attachment and on-demand swift detachment of the drug at a targeted site. The magnetic field-assisted drug-loading mechanism was minutely analyzed using spectrophotometry and Raman spectroscopy. The detailed time-dependent analysis of controlled drug release by the MENG under unidirectional and rotating magnetic field excitation was conducted using field-emission scanning electron microscopy, energy-dispersive X-ray, and atomic force microscopic measurements. In vitro, experiments validate the cytocompatibility and magnetically assisted on-demand and swift DOX drug delivery by the MENG near MCF-7 breast cancer cells, which results in a significant enhancement of cancer cell killing efficiency. A state-of-the-art experiment was performed to visualize the nanoscale magnetoelectric effect of MENG using off-axis electron holography under Lorentz conditions.
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Affiliation(s)
- Nandan Murali
- Department
of Electrical Engineering, Indian Institute
of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Simran Kaur Rainu
- Center
for Biomedical Engineering, Indian Institute
of Technology Delhi, Hauz Khas, New Delhi110016, India
| | - Arti Sharma
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi110016, India
| | - Soumik Siddhanta
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi110016, India
| | - Neetu Singh
- Center
for Biomedical Engineering, Indian Institute
of Technology Delhi, Hauz Khas, New Delhi110016, India
| | - Soutik Betal
- Department
of Electrical Engineering, Indian Institute
of Technology Delhi, Hauz Khas, New Delhi 110016, India
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Tiryaki E, Ortolano S, Bodelón G, Salgueiriño V. Programming an Enhanced Uptake and the Intracellular Fate of Magnetic Microbeads. Adv Healthc Mater 2023; 12:e2301415. [PMID: 37660272 DOI: 10.1002/adhm.202301415] [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] [Received: 05/04/2023] [Revised: 08/28/2023] [Indexed: 09/04/2023]
Abstract
This study compares two kinds of magnetic microbeads with different surface features and cell entry pathways, aiming to provide insights into how to program their cell uptake and intracellular fate. It is found that a rougher surface enhances the cell uptake of the microbeads, regardless of whether they are pulled by a magnetic field gradient or adsorbed by the cell membrane. However, the entry route affects the intracellular localization of the microbeads: The magnetically dragged microbeads reach the cytoplasm, while the adsorbed microbeads stay in the late endosomes and lysosomes. This suggests that different strategies can be used to target different cellular compartments with magnetic microbeads. Moreover, it is demonstrated that the cells containing the microbeads can be moved and regrown at specific locations by applying a magnetic field gradient, showing the potential of these magnetic microbeads for cell delivery and manipulation.
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Affiliation(s)
- Ecem Tiryaki
- CINBIO, Universidade de Vigo, Vigo, 36310, Spain
| | - Saida Ortolano
- Rare Diseases and Pediatric Medicine Research Group, Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Hospital Álvaro Cunqueiro, Vigo, 36312, Spain
| | - Gustavo Bodelón
- CINBIO, Universidade de Vigo, Vigo, 36310, Spain
- Departamento de Biología Funcional y Ciencias de la Salud, Universidade de Vigo, Vigo, 36310, Spain
| | - Verónica Salgueiriño
- CINBIO, Universidade de Vigo, Vigo, 36310, Spain
- Departamento de Física Aplicada, Universidade de Vigo, Vigo, 36310, Spain
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Li J, Wu C, Zeng M, Zhang Y, Wei D, Sun J, Fan H. Functional material-mediated wireless physical stimulation for neuro-modulation and regeneration. J Mater Chem B 2023; 11:9056-9083. [PMID: 37649427 DOI: 10.1039/d3tb01354e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Nerve injuries and neurological diseases remain intractable clinical challenges. Despite the advantages of stem cell therapy in treating neurological disorders, uncontrollable cell fates and loss of cell function in vivo are still challenging. Recently, increasing attention has been given to the roles of external physical signals, such as electricity and ultrasound, in regulating stem cell fate as well as activating or inhibiting neuronal activity, which provides new insights for the treatment of neurological disorders. However, direct physical stimulations in vivo are short in accuracy and safety. Functional materials that can absorb energy from a specific physical field exerted in a wireless way and then release another localized physical signal hold great advantages in mediating noninvasive or minimally invasive accurate indirect physical stimulations to promote the therapeutic effect on neurological disorders. In this review, the mechanism by which various physical signals regulate stem cell fate and neuronal activity is summarized. Based on these concepts, the approaches of using functional materials to mediate indirect wireless physical stimulation for neuro-modulation and regeneration are systematically reviewed. We expect that this review will contribute to developing wireless platforms for neural stimulation as an assistance for the treatment of neurological diseases and injuries.
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Affiliation(s)
- Jialu Li
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, Sichuan, China.
| | - Chengheng Wu
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, Sichuan, China.
- Institute of Regulatory Science for Medical Devices, Sichuan University, Chengdu 610065, Sichuan, China
| | - Mingze Zeng
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, Sichuan, China.
| | - Yusheng Zhang
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, Sichuan, China.
| | - Dan Wei
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, Sichuan, China.
| | - Jing Sun
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, Sichuan, China.
| | - Hongsong Fan
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, Sichuan, China.
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Chernozem RV, Urakova AO, Chernozem PV, Koptsev DA, Mukhortova YR, Grubova IY, Wagner DV, Gerasimov EY, Surmeneva MA, Kholkin AL, Surmenev RA. Novel Biocompatible Magnetoelectric MnFe 2 O 4 Core@BCZT Shell Nano-Hetero-Structures with Efficient Catalytic Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302808. [PMID: 37357170 DOI: 10.1002/smll.202302808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/29/2023] [Indexed: 06/27/2023]
Abstract
Magnetoelectric (ME) small-scale robotic devices attract great interest from the scientific community due to their unique properties for biomedical applications. Here, novel ME nano hetero-structures based on the biocompatible magnetostrictive MnFe2 O4 (MFO) and ferroelectric Ba0.85 Ca0.15 Zr0.1 Ti0.9 O3 (BCZT) are developed solely via the hydrothermal method for the first time. An increase in the temperature and duration of the hydrothermal synthesis results in increasing the size, improving the purity, and inducing morphology changes of MFO nanoparticles (NPs). A successful formation of a thin epitaxial BCZT-shell with a 2-5 nm thickness is confirmed on the MFO NPs (77 ± 14 nm) preliminarily treated with oleic acid (OA) or polyvinylpyrrolidone (PVP), whereas no shell is revealed on the surface of pristine MFO NPs. High magnetization is revealed for the developed ME NPs based on PVP- and OA-functionalized MFO NPs (18.68 ± 0.13 and 20.74 ± 0.22 emu g-1 , respectively). Moreover, ME NPs demonstrate 95% degradation of a model pollutant Rhodamine B within 2.5 h under an external AC magnetic field (150 mT, 100 Hz). Thus, the developed biocompatible core-shell ME NPs of MFO and BCZT can be considered as a promising tool for non-invasive biomedical applications, environmental remediation, and hydrogen generation for renewable energy sources.
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Affiliation(s)
- Roman V Chernozem
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Alina O Urakova
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Polina V Chernozem
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Danila A Koptsev
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Yulia R Mukhortova
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Irina Yu Grubova
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Dmitry V Wagner
- Faculty of Radiophysics, National Research Tomsk State University, Tomsk, 634050, Russia
| | - Evgeny Yu Gerasimov
- Catalyst Research Department, Boreskov Institute of Catalysis, Lavrentieva ave. 5, Novosibirsk, 630090, Russia
| | - Maria A Surmeneva
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Andrei L Kholkin
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Roman A Surmenev
- Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
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6
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Wu D, Liu J, Zhou C, Ma W, Zhou L, Ge Y, Jia R. Immunomagnetic Delivery of Adipose-Derived Endothelial Progenitor Cells for the Repair of Renal Ischemia-Reperfusion Injury in a Rat Model. Bioengineering (Basel) 2023; 10:bioengineering10050509. [PMID: 37237579 DOI: 10.3390/bioengineering10050509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 04/19/2023] [Accepted: 04/21/2023] [Indexed: 05/28/2023] Open
Abstract
Renal ischemia-reperfusion injury (IRI) is a significant cause of acute kidney injury (AKI) and usually brings severe public health consequences. Adipose-derived endothelial progenitor cell (AdEPCs) transplantation is beneficial for AKI but suffers from low delivery efficiency. This study was conducted to explore the protective effects of magnetically delivered AdEPCs on the repair of renal IRI. Two types of magnetic delivery methods, namely the endocytosis magnetization (EM) method and the immunomagnetic (IM) method were fabricated using PEG@Fe3O4 and CD133@Fe3O4, and their cytotoxicities in AdEPCs were assessed. In the renal IRI rat model, magnetic AdEPCs were injected via the tail vein and a magnet was placed beside the injured kidney for magnetic guidance. The distribution of transplanted AdEPCs, renal function, and tubular damage were evaluated. Our results suggested that CD133@Fe3O4 had the minimum negative effects on the proliferation, apoptosis, angiogenesis, and migration of AdEPCs compared with PEG@Fe3O4. Renal magnetic guidance could significantly enhance the transplantation efficiency and the therapeutic outcomes of AdEPCs-PEG@Fe3O4 and AdEPCs-CD133@Fe3O4 in the injured kidneys. However, under renal magnetic guidance, AdEPCs-CD133@Fe3O4 had stronger therapeutic effects than PEG@Fe3O4 after renal IRI. The immunomagnetic delivery of AdEPCs with CD133@Fe3O4 could be a promising therapeutic strategy for renal IRI.
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Affiliation(s)
- Di Wu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Jingyu Liu
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Changcheng Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Wenjie Ma
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Liuhua Zhou
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Yuzheng Ge
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Ruipeng Jia
- Department of Urology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
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