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Zhang H, Zhang Z, Lin H. Research progress on the reduced neural repair ability of aging Schwann cells. Front Cell Neurosci 2023; 17:1228282. [PMID: 37545880 PMCID: PMC10398339 DOI: 10.3389/fncel.2023.1228282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/06/2023] [Indexed: 08/08/2023] Open
Abstract
Peripheral nerve injury (PNI) is associated with delayed repair of the injured nerves in elderly patients, resulting in loss of nerve function, chronic pain, muscle atrophy, and permanent disability. Therefore, the mechanism underlying the delayed repair of peripheral nerves in aging patients should be investigated. Schwann cells (SCs) play a crucial role in repairing PNI and regulating various nerve-repair genes after injury. SCs also promote peripheral nerve repair through various modalities, including mediating nerve demyelination, secreting neurotrophic factors, establishing Büngner bands, clearing axon and myelin debris, and promoting axon remyelination. However, aged SCs undergo structural and functional changes, leading to demyelination and dedifferentiation disorders, decreased secretion of neurotrophic factors, impaired clearance of axonal and myelin debris, and reduced capacity for axon remyelination. As a result, aged SCs may result in delayed repair of nerves after injury. This review article aimed to examine the mechanism underlying the diminished neural repair ability of aging SCs.
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Fan Z, Wen X, Ding X, Wang Q, Wang S, Yu W. Advances in biotechnology and clinical therapy in the field of peripheral nerve regeneration based on magnetism. Front Neurol 2023; 14:1079757. [PMID: 36970536 PMCID: PMC10036769 DOI: 10.3389/fneur.2023.1079757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/07/2023] [Indexed: 03/12/2023] Open
Abstract
Peripheral nerve injury (PNI) is one of the most common neurological diseases. Recent studies on nerve cells have provided new ideas for the regeneration of peripheral nerves and treatment of physical trauma or degenerative disease-induced loss of sensory and motor neuron functions. Accumulating evidence suggested that magnetic fields might have a significant impact on the growth of nerve cells. Studies have investigated different magnetic field properties (static or pulsed magnetic field) and intensities, various magnetic nanoparticle-encapsulating cytokines based on superparamagnetism, magnetically functionalized nanofibers, and their relevant mechanisms and clinical applications. This review provides an overview of these aspects as well as their future developmental prospects in related fields.
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Liu T, Wang Y, Lu L, Liu Y. SPIONs mediated magnetic actuation promotes nerve regeneration by inducing and maintaining repair-supportive phenotypes in Schwann cells. J Nanobiotechnology 2022; 20:159. [PMID: 35351151 PMCID: PMC8966266 DOI: 10.1186/s12951-022-01337-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 02/26/2022] [Indexed: 12/18/2022] Open
Abstract
Background Schwann cells, the glial cells in the peripheral nervous system, are highly plastic. In response to nerve injury, Schwann cells are reprogrammed to a series of specialized repair-promoting phenotypes, known as repair Schwann cells, which play a pivotal role in nerve regeneration. However, repair Schwann cells represent a transient and unstable cell state, and these cells progressively lose their repair phenotypes and repair‐supportive capacity; the transience of this state is one of the key reasons for regeneration failure in humans. Therefore, the ability to control the phenotypic stability of repair Schwann cells is of great practical importance as well as biological interest. Results We designed and prepared a type of fluorescent–magnetic bifunctional superparamagnetic iron oxide nanoparticles (SPIONs). In the present study, we established rat sciatic nerve injury models, then applied SPIONs to Schwann cells and established an effective SPION-mediated magnetic actuation system targeting the sciatic nerves. Our results demonstrate that magnetic actuation mediated by SPIONs can induce and maintain repair-supportive phenotypes of Schwann cells, thereby promoting regeneration and functional recovery of the sciatic nerve after crush injury. Conclusions Our research indicate that Schwann cells can sense these external, magnetically driven mechanical forces and transduce them to intracellular biochemical signals that promote nerve regeneration by inducing and maintaining the repair phenotypes of Schwann cells. We hope that this study will provide a new therapeutic strategy to promote the regeneration and repair of injured peripheral nerves. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01337-5.
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Affiliation(s)
- Ting Liu
- Department of Geriatrics, The First Hospital of Jilin University, Changchun, 130021, People's Republic of China
| | - Yang Wang
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, 130021, People's Republic of China.
| | - Laijin Lu
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, 130021, People's Republic of China
| | - Yi Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, People's Republic of China.
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Funnell JL, Ziemba AM, Nowak JF, Awada H, Prokopiou N, Samuel J, Guari Y, Nottelet B, Gilbert RJ. Assessing the combination of magnetic field stimulation, iron oxide nanoparticles, and aligned electrospun fibers for promoting neurite outgrowth from dorsal root ganglia in vitro. Acta Biomater 2021; 131:302-313. [PMID: 34271170 PMCID: PMC8373811 DOI: 10.1016/j.actbio.2021.06.049] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 06/26/2021] [Accepted: 06/29/2021] [Indexed: 02/08/2023]
Abstract
Magnetic fiber composites combining superparamagnetic iron oxide nanoparticles (SPIONs) and electrospun fibers have shown promise in tissue engineering fields. Controlled grafting of SPIONs to the fibers post-electrospinning generates biocompatible magnetic composites without altering desired fiber morphology. Here, for the first time, we assess the potential of SPION-grafted scaffolds combined with magnetic fields to promote neurite outgrowth by providing contact guidance from the aligned fibers and mechanical stimulation from the SPIONs in the magnetic field. Neurite outgrowth from primary rat dorsal root ganglia (DRG) was assessed from explants cultured on aligned control and SPION-grafted electrospun fibers as well as on non-grafted fibers with SPIONs dispersed in the culture media. To determine the optimal magnetic field stimulation to promote neurite outgrowth, we generated a static, alternating, and linearly moving magnet and simulated the magnetic flux density at different areas of the scaffold over time. The alternating magnetic field increased neurite length by 40% on control fibers compared to a static magnetic field. Additionally, stimulation with an alternating magnetic field resulted in a 30% increase in neurite length and 62% increase in neurite area on SPION-grafted fibers compared to DRG cultured on PLLA fibers with untethered SPIONs added to the culture media. These findings demonstrate that SPION-grafted fiber composites in combination with magnetic fields are more beneficial for stimulating neurite outgrowth on electrospun fibers than dispersed SPIONs. STATEMENT OF SIGNIFICANCE: Aligned electrospun fibers improve axonal regeneration by acting as a passive guidance cue but do not actively interact with cells, while magnetic nanoparticles can be remotely manipulated to interact with neurons and elicit neurite outgrowth. Here, for the first time, we examine the combination of magnetic fields, magnetic nanoparticles, and aligned electrospun fibers to enhance neurite outgrowth. We show an alternating magnetic field alone increases neurite outgrowth on aligned electrospun fibers. However, combining the alternating field with magnetic nanoparticle-grafted fibers does not affect neurite outgrowth compared to control fibers but improves outgrowth compared to freely dispersed magnetic nanoparticles. This study provides the groundwork for utilizing magnetic electrospun fibers and magnetic fields as a method for promoting axonal growth.
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Affiliation(s)
- Jessica L Funnell
- Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Alexis M Ziemba
- Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - James F Nowak
- Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Hussein Awada
- IBMM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Nicos Prokopiou
- Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Johnson Samuel
- Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Yannick Guari
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - Ryan J Gilbert
- Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA.
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Soto PA, Vence M, Piñero GM, Coral DF, Usach V, Muraca D, Cueto A, Roig A, van Raap MBF, Setton-Avruj CP. Sciatic nerve regeneration after traumatic injury using magnetic targeted adipose-derived mesenchymal stem cells. Acta Biomater 2021; 130:234-247. [PMID: 34082099 DOI: 10.1016/j.actbio.2021.05.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 12/15/2022]
Abstract
Traumatic peripheral nerve injuries constitute a huge concern to public health. Nerve damage leads to a decrease or even loss of mobility of the innervated area. Adult stem cell therapies have shown some encouraging results and have been identified as promising treatment candidates for nerve regeneration. A major obstacle to that approach is securing a sufficient number of cells at the injured site to produce measurable therapeutic effects. The present work tackles this issue and demonstrates enhanced nerve regeneration ability promoted by magnetic targeted cell therapy in an in vivo Wallerian degeneration model. To this end, adipose-derived mesenchymal stem cells (AdMSC) were loaded with citric acid coated superparamagnetic iron oxide nanoparticles (SPIONs), systemically transplanted and magnetically recruited to the injured sciatic nerve. AdMSC arrival to the injured nerve was significantly increased using magnetic targeting and their beneficial effects surpassed the regenerative properties of the stand-alone cell therapy. AdMSC-SPIONs group showed a partially conserved nerve structure with many intact myelinated axons. Also, a very remarkable restoration in myelin basic protein organization, indicative of remyelination, was observed. This resulted in an improvement in nerve conduction, demonstrating functional recovery. In summary, our results demonstrate that magnetically assisted delivery of AdMSC, using a non-invasive and non-traumatic method, is a highly promising strategy to promote cell recruitment and sciatic nerve regeneration after traumatic injury. Last but not least, our results validate magnetic targeting in vivo exceeding previous reports in less complex models through cell magnetic targeting in vitro and ex vivo. STATEMENT OF SIGNIFICANCE: Traumatic peripheral nerve injuries constitute a huge public health concern. They can lead to a decrease or even loss of mobility of innervated areas. Due to their complex pathophysiology, current pharmacological and surgical approaches are only partially effective. Cell-based therapies have emerged as a useful tool to achieve full tissue regeneration. However, a major bottleneck is securing enough cells at injured sites. Therefore, our proposal combining biological (adipose derived mesenchymal stem cells) and nanotechnological strategies (magnetic targeting) is of great relevance, reporting the first in vivo experiments involving "magnetic stem cell" targeting for peripheral nerve regeneration. Using a non-invasive and non-traumatic method, cell recruitment in the injured nerve was improved, fostering nerve remyelination and functional recovery.
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Affiliation(s)
- Paula A Soto
- Departamento de Química Biológica, Cátedra de Química Biológica Patológica. Junín 956, Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina; Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Junín 956, CONICET, Universidad de Buenos Aires. Buenos Aires, Argentina
| | - Marianela Vence
- Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Junín 956, CONICET, Universidad de Buenos Aires. Buenos Aires, Argentina
| | - Gonzalo M Piñero
- Departamento de Química Biológica, Cátedra de Química Biológica Patológica. Junín 956, Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina; Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Junín 956, CONICET, Universidad de Buenos Aires. Buenos Aires, Argentina
| | - Diego F Coral
- Instituto de Física La Plata (IFLP - CONICET), Departamento de Física, Facultad de Ciencias, Exactas, Universidad Nacional de La Plata (UNLP), c.c. 67, 1900, La Plata, Argentina
| | - Vanina Usach
- Departamento de Química Biológica, Cátedra de Química Biológica Patológica. Junín 956, Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina; Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Junín 956, CONICET, Universidad de Buenos Aires. Buenos Aires, Argentina
| | - Diego Muraca
- Instituto de Física 'Gleb Wataghin', Universidade Estadual de Campinas, R. Sérgio Buarque de Holanda, 777 - 13083-859, Campinas, Brazil
| | - Alicia Cueto
- Hospital Español, Servicio de Neurología. Av. Belgrano 2975 C1209, Buenos Aires, Argentina
| | - Anna Roig
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Catalonia, Spain
| | - Marcela B Fernández van Raap
- Instituto de Física La Plata (IFLP - CONICET), Departamento de Física, Facultad de Ciencias, Exactas, Universidad Nacional de La Plata (UNLP), c.c. 67, 1900, La Plata, Argentina
| | - Clara P Setton-Avruj
- Departamento de Química Biológica, Cátedra de Química Biológica Patológica. Junín 956, Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina; Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Junín 956, CONICET, Universidad de Buenos Aires. Buenos Aires, Argentina.
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