1
|
Xin GD, Liu XY, Fan XD, Zhao GJ. Exosomes repairment for sciatic nerve injury: a cell-free therapy. Stem Cell Res Ther 2024; 15:214. [PMID: 39020385 PMCID: PMC11256477 DOI: 10.1186/s13287-024-03837-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Accepted: 07/05/2024] [Indexed: 07/19/2024] Open
Abstract
Sciatic nerve injury (SNI) is a common type of peripheral nerve injury typically resulting from trauma, such as contusion, sharp force injuries, drug injections, pelvic fractures, or hip dislocations. It leads to both sensory and motor dysfunctions, characterized by pain, numbness, loss of sensation, muscle atrophy, reduced muscle tone, and limb paralysis. These symptoms can significantly diminish a patient's quality of life. Following SNI, Wallerian degeneration occurs, which activates various signaling pathways, inflammatory factors, and epigenetic regulators. Despite the availability of several surgical and nonsurgical treatments, their effectiveness remains suboptimal. Exosomes are extracellular vesicles with diameters ranging from 30 to 150 nm, originating from the endoplasmic reticulum. They play a crucial role in facilitating intercellular communication and have emerged as highly promising vehicles for drug delivery. Increasing evidence supports the significant potential of exosomes in repairing SNI. This review delves into the pathological progression of SNI, techniques for generating exosomes, the molecular mechanisms behind SNI recovery with exosomes, the effectiveness of combining exosomes with other approaches for SNI repair, and the changes and future outlook for utilizing exosomes in SNI recovery.
Collapse
Affiliation(s)
- Guang-Da Xin
- Nephrology Department, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province, 130000, China
| | - Xue-Yan Liu
- Cardiology Department, China-Japan Union Hospital of Jilin Universit, Changchun, Jilin Province, 130000, China
| | - Xiao-Di Fan
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province, 130000, China
| | - Guan-Jie Zhao
- Nephrology Department, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province, 130000, China.
| |
Collapse
|
2
|
Tseropoulos G, Mehrotra P, Podder AK, Wilson E, Zhang Y, Wang J, Koontz A, Gao NP, Gunawan R, Liu S, Feltri LM, Bronner ME, Andreadis ST. Immobilized NRG1 Accelerates Neural Crest like Cell Differentiation Toward Functional Schwann Cells Through Sustained Erk1/2 Activation and YAP/TAZ Nuclear Translocation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2402607. [PMID: 38952126 DOI: 10.1002/advs.202402607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Indexed: 07/03/2024]
Abstract
Neural Crest cells (NC) are a multipotent cell population that give rise to a multitude of cell types including Schwann cells (SC) in the peripheral nervous system (PNS). Immature SC interact with neuronal axons via the neuregulin 1 (NRG1) ligand present on the neuronal surface and ultimately form the myelin sheath. Multiple attempts to derive functional SC from pluripotent stem cells have met challenges with respect to expression of mature markers and axonal sorting. Here, they hypothesized that sustained signaling from immobilized NRG1 (iNRG1) might enhance the differentiation of NC derived from glabrous neonatal epidermis towards a SC phenotype. Using this strategy, NC derived SC expressed mature markers to similar levels as compared to explanted rat sciatic SC. Signaling studies revealed that sustained NRG1 signaling led to yes-associated protein 1 (YAP) activation and nuclear translocation. Furthermore, NC derived SC on iNRG1 exhibited mature SC function as they aligned with rat dorsal root ganglia (DRG) neurons in an in vitro coculture model; and most notably, aligned on neuronal axons upon implantation in a chick embryo model in vivo. Taken together their work demonstrated the importance of signaling dynamics in SC differentiation, aiming towards development of drug testing platforms for de-myelinating disorders.
Collapse
Affiliation(s)
- Georgios Tseropoulos
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY, 14260, USA
| | - Pihu Mehrotra
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY, 14260, USA
| | - Ashis Kumer Podder
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY, 14260, USA
- Department of Pharmacy, Brac University, Dhaka, 1212, Bangladesh
| | - Emma Wilson
- Hunter James Kelly Research Institute, Jacobs School of Medicine and Biomedical Sciences State, University of New York at Buffalo, Buffalo, NY, 14203, USA
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, 14203, USA
| | - Yali Zhang
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Jianmin Wang
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Alison Koontz
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91126, USA
| | - Nan Papili Gao
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY, 14260, USA
| | - Rudiyanto Gunawan
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY, 14260, USA
- Center for Cell, Gene and Tissue Engineering (CGTE), University at Buffalo, Buffalo, NY, 14260, USA
| | - Song Liu
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Laura M Feltri
- Hunter James Kelly Research Institute, Jacobs School of Medicine and Biomedical Sciences State, University of New York at Buffalo, Buffalo, NY, 14203, USA
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, 14203, USA
- Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, 14203, USA
| | - Marianne E Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91126, USA
| | - Stelios T Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY, 14260, USA
- Center for Cell, Gene and Tissue Engineering (CGTE), University at Buffalo, Buffalo, NY, 14260, USA
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, 14260, USA
- Center of Excellence in Bioinformatics and Life Sciences, Buffalo, NY, 14203, USA
| |
Collapse
|
3
|
Zou J, Xia H, Jiang Q, Su Z, Wen S, Liang Z, Ouyang Y, Liu J, Zhang Z, Chen D, Yang L, Guo L. Exosomes derived from odontogenic stem cells: Its role in the dentin-pulp complex. Regen Ther 2023; 24:135-146. [PMID: 37415682 PMCID: PMC10320411 DOI: 10.1016/j.reth.2023.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/01/2023] [Accepted: 05/25/2023] [Indexed: 07/08/2023] Open
Abstract
Odontogenic stem cells originate from cranial neural crest cells and offer unique advantages in the regeneration of dentin-pulp complex. There is increasing evidence that stem cells exert their biological functions mainly through exosome-based paracrine effects. Exosomes contain DNA, RNA, proteins, metabolites, etc., which can play a role in intercellular communication and have similar therapeutic potential to stem cells. In addition, compared with stem cells, exosomes also have the advantages of good biocompatibility, high drug carrying capacity, easy to obtain, and few side effects. Odontogenic stem cell-derived exosomes mainly affect the regeneration of the dentin-pulp complex by regulating processes such as dentintogenesis, angiogenesis, neuroprotection and immunomodulation. This review aimed to describe "cell-free therapies" based on odontogenic stem cell-derived exosomes, which aim to regenerate the dentin-pulp complex.
Collapse
Affiliation(s)
- Jiyuan Zou
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Han Xia
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Qianzhou Jiang
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Zhikang Su
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Siyi Wen
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Zitian Liang
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Yuanting Ouyang
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Jiaohong Liu
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Zhiyi Zhang
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Ding Chen
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Li Yang
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| | - Lvhua Guo
- Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong, China
| |
Collapse
|
4
|
Hu X, Buhl CS, Sjogaard MB, Schousboe K, Mizrak HI, Kufaishi H, Jensen TS, Hansen CS, Yderstræde KB, Zhang MD, Ernfors P, Nyengaard JR, Karlsson P. Structural changes in Schwann cells and nerve fibres in type 1 diabetes: relationship with diabetic polyneuropathy. Diabetologia 2023; 66:2332-2345. [PMID: 37728731 PMCID: PMC10627903 DOI: 10.1007/s00125-023-06009-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 08/01/2023] [Indexed: 09/21/2023]
Abstract
AIMS/HYPOTHESIS Our aim was to investigate structural changes of cutaneous Schwann cells (SCs), including nociceptive Schwann cells (nSCs) and axons, in individuals with diabetic polyneuropathy. We also aimed to investigate the relationship between these changes and peripheral neuropathic symptoms in type 1 diabetes. METHODS Skin biopsies (3 mm) taken from carefully phenotyped participants with type 1 diabetes without polyneuropathy (T1D, n=25), type 1 diabetes with painless diabetic polyneuropathy (T1DPN, n=30) and type 1 diabetes with painful diabetic polyneuropathy (P-T1DPN, n=27), and from healthy control individuals (n=25) were immunostained with relevant antibodies to visualise SCs and nerve fibres. Stereological methods were used to quantify the expression of cutaneous SCs and nerve fibres. RESULTS There was a difference in the number density of nSCs not abutting to nerve fibres between the groups (p=0.004) but not in the number density of nSCs abutting to nerve fibres, nor in solitary or total subepidermal SC soma number density. The overall dermal SC expression (measured by dermal SC area fraction and subepidermal SC process density) and peripheral nerve fibre expression (measured by intraepidermal nerve fibre density, dermal nerve fibre area fraction and subepidermal nerve fibre density) differed between the groups (all p<0.05): significant differences were seen in participants with T1DPN and P-T1DPN compared with those without diabetic polyneuropathy (healthy control and T1D groups) (all p<0.05). No difference was found between participants in the T1DPN and P-T1DPN group, nor between participants in the T1D and healthy control group (all p>0.05). Correlational analysis showed that cutaneous SC processes and nerve fibres were highly associated, and they were weakly negatively correlated with different neuropathy measures. CONCLUSIONS/INTERPRETATION Cutaneous SC processes and nerves, but not SC soma, are degenerated and interdependent in individuals with diabetic polyneuropathy. However, an increase in structurally damaged nSCs was seen in individuals with diabetic polyneuropathy. Furthermore, dermal SC processes and nerve fibres correlate weakly with clinical measures of neuropathy and may play a partial role in the pathophysiology of diabetic polyneuropathy in type 1 diabetes.
Collapse
Affiliation(s)
- Xiaoli Hu
- Core Center for Molecular Morphology, Section for Stereology and Microscopy, Aarhus University, Aarhus, Denmark
| | | | - Marie Balle Sjogaard
- Core Center for Molecular Morphology, Section for Stereology and Microscopy, Aarhus University, Aarhus, Denmark
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Karoline Schousboe
- Steno Diabetes Center Odense, Odense University Hospital, Odense, Denmark
| | | | | | - Troels Staehelin Jensen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Neurology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - Ming-Dong Zhang
- Department of Medical Biochemistry and Biophysics, Division of Molecular Neurobiology, Karolinska Institutet, Stockholm, Sweden
| | - Patrik Ernfors
- Department of Medical Biochemistry and Biophysics, Division of Molecular Neurobiology, Karolinska Institutet, Stockholm, Sweden
| | - Jens Randel Nyengaard
- Core Center for Molecular Morphology, Section for Stereology and Microscopy, Aarhus University, Aarhus, Denmark
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - Pall Karlsson
- Core Center for Molecular Morphology, Section for Stereology and Microscopy, Aarhus University, Aarhus, Denmark.
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark.
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
| |
Collapse
|
5
|
Xia L, Li P, Bi W, Yang R, Zhang Y. CDK5R1 promotes Schwann cell proliferation, migration, and production of neurotrophic factors via CDK5/BDNF/TrkB after sciatic nerve injury. Neurosci Lett 2023; 817:137514. [PMID: 37848102 DOI: 10.1016/j.neulet.2023.137514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/25/2023] [Accepted: 10/08/2023] [Indexed: 10/19/2023]
Abstract
Cyclin-dependent kinase 5 regulatory subunit 1 (CDK5R1) is necessary for central nervous system development and neuronal migration. At present, there are few reports about the role of CDK5R1 in peripheral nerve injury, and these need to be further explored. The CCK-8 and EdU assay was performed to examine cell proliferation. The migration ability of Schwann cells was tested by the cell scratch test. The apoptosis of Schwann cells was detected by flow cytometry. Sciatic nerve injury model in rats was established by crush injury. The sciatic function index (SFI) and the paw withdrawal mechanical threshold (PWMT) were measured at different time points. The results revealed that overexpression of CDK5R1 promoted the proliferation and migration of Schwann cells, and inhibited the apoptosis. Further studies found that pcDNA3.1-CDK5R1 significantly upregulated the expression of CDK5, BDNF and TrkB. More importantly, CDK5R1 promoted the recovery of nerve injury in rats. In addition, the CDK5 mediated BDNF/TrkB pathway was involved in the molecular mechanism of CDK5R1 on Schwann cells. It is suggested that the mechanism by which CDK5R1 promotes functional recovery after sciatic nerve injury is by CDK5 mediated activation of BDNF/TrkB signaling pathways.
Collapse
Affiliation(s)
- Lei Xia
- School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China; Department of Hand Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Peng Li
- Department of Hand Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Wenchao Bi
- Department of Hand Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Ruize Yang
- Department of Hand Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Yuelin Zhang
- School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China.
| |
Collapse
|
6
|
Jiang Z, Zhang W, Liu C, Xia L, Wang S, Wang Y, Shao K, Han B. Facilitation of Cell Cycle and Cellular Migration of Rat Schwann Cells by O-Carboxymethyl Chitosan to Support Peripheral Nerve Regeneration. Macromol Biosci 2023; 23:e2300025. [PMID: 37282815 DOI: 10.1002/mabi.202300025] [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: 01/25/2023] [Revised: 04/03/2023] [Indexed: 06/08/2023]
Abstract
O-carboxymethyl chitosan (CM-chitosan), holds high potential as a valuable biomaterial for nerve guidance conduits (NGCs). However, the lack of explicit bioactivity on neurocytes and poor duration that does not match nerve repair limit the restorative effects. Herein, CM-chitosan-based NGC is designed to induce the reconstruction of damaged peripheral nerves without addition of other activation factors. CM-chitosan possesses excellent performance in vitro for nerve tissue engineering, such as increasing the organization of filamentous actin and the expression of phospho-Akt, and facilitating the cell cycle and migration of Schwann cells. Moreover, CM-chitosan exhibits increased longevity upon cross-linking (C-CM-chitosan) with 1, 4-Butanediol diglycidyl ether, and C-CM-chitosan fibers possess appropriate biocompatibility. In order to imitate the structure of peripheral nerves, multichannel bioactive NGCs are prepared from lumen fillers of oriented C-CM-chitosan fibers and outer warp-knitted chitosan pipeline. Implantation of the C-CM-chitosan NGCs to rats with 10-mm defects of peripheral nerves effectively improve nerve function reconstruction by increasing the sciatic functional index, decreasing the latent periods of heat tingling, enhancing the gastrocnemius muscle, and promoting nerve axon recovery, showing regenerative efficacy similar to that of autograft. The results lay a theoretical foundation for improving the potential high-value applications of CM-chitosan-based bioactive materials in nerve tissue engineering.
Collapse
Affiliation(s)
- Zhiwen Jiang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Wei Zhang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Chenqi Liu
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Lixin Xia
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Shuo Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Yanting Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Kai Shao
- Department of Central Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, 266035, P. R. China
| | - Baoqin Han
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| |
Collapse
|
7
|
Namini MS, Daneshimehr F, Beheshtizadeh N, Mansouri V, Ai J, Jahromi HK, Ebrahimi-Barough S. Cell-free therapy based on extracellular vesicles: a promising therapeutic strategy for peripheral nerve injury. Stem Cell Res Ther 2023; 14:254. [PMID: 37726794 PMCID: PMC10510237 DOI: 10.1186/s13287-023-03467-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/22/2023] [Indexed: 09/21/2023] Open
Abstract
Peripheral nerve injury (PNI) is one of the public health concerns that can result in a loss of sensory or motor function in the areas in which injured and non-injured nerves come together. Up until now, there has been no optimized therapy for complete nerve regeneration after PNI. Exosome-based therapies are an emerging and effective therapeutic strategy for promoting nerve regeneration and functional recovery. Exosomes, as natural extracellular vesicles, contain bioactive molecules for intracellular communications and nervous tissue function, which could overcome the challenges of cell-based therapies. Furthermore, the bioactivity and ability of exosomes to deliver various types of agents, such as proteins and microRNA, have made exosomes a potential approach for neurotherapeutics. However, the type of cell origin, dosage, and targeted delivery of exosomes still pose challenges for the clinical translation of exosome therapeutics. In this review, we have focused on Schwann cell and mesenchymal stem cell (MSC)-derived exosomes in nerve tissue regeneration. Also, we expressed the current understanding of MSC-derived exosomes related to nerve regeneration and provided insights for developing a cell-free MSC therapeutic strategy for nerve injury.
Collapse
Affiliation(s)
- Mojdeh Salehi Namini
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Fatemeh Daneshimehr
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Beheshtizadeh
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Vahid Mansouri
- Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Jafar Ai
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Hossein Kargar Jahromi
- Research Center for Noncommunicable Diseases, Jahrom University of Medical Sciences, Jahrom, Iran.
| | - Somayeh Ebrahimi-Barough
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
8
|
Elfarnawany A, Dehghani F. Time- and Concentration-Dependent Adverse Effects of Paclitaxel on Non-Neuronal Cells in Rat Primary Dorsal Root Ganglia. TOXICS 2023; 11:581. [PMID: 37505547 PMCID: PMC10385404 DOI: 10.3390/toxics11070581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/27/2023] [Accepted: 07/01/2023] [Indexed: 07/29/2023]
Abstract
Paclitaxel is a chemotherapeutic agent used to treat a wide range of malignant tumors. Although it has anti-tumoral properties, paclitaxel also shows significant adverse effects on the peripheral nervous system, causing peripheral neuropathy. Paclitaxel has previously been shown to exert direct neurotoxic effects on primary DRG neurons. However, little is known about paclitaxel's effects on non-neuronal DRG cells. They provide mechanical and metabolic support and influence neuronal signaling. In the present study, paclitaxel effects on primary DRG non-neuronal cells were analyzed and their concentration or/and time dependence investigated. DRGs of Wister rats (6-8 weeks old) were isolated, and non-neuronal cell populations were separated by the density gradient centrifugation method. Different concentrations of Paclitaxel (0.01 µM-10 µM) were tested on cell viability by MTT assay, cell death by lactate dehydrogenase (LDH) assay, and propidium iodide (PI) assay, as well as cell proliferation by Bromodeoxyuridine (BrdU) assay at 24 h, 48 h, and 72 h post-treatment. Furthermore, phenotypic effects have been investigated by using immunofluorescence techniques. Paclitaxel exhibited several toxicological effects on non-neuronal cells, including a reduction in cell viability, an increase in cell death, and an inhibition of cell proliferation. These effects were concentration- and time-dependent. Cellular and nuclear changes such as shrinkage, swelling of cell bodies, nuclear condensation, chromatin fragmentation, retraction, and a loss in processes were observed. Paclitaxel showed adverse effects on primary DRG non-neuronal cells, which might have adverse functional consequences on sensory neurons of the DRG, asking for consideration in the management of peripheral neuropathy.
Collapse
Affiliation(s)
- Amira Elfarnawany
- Department of Anatomy and Cell Biology, Medical Faculty, Martin Luther University Halle-Wittenberg, Grosse Steinstrasse 52, 06108 Halle (Saale), Germany
- Zoology Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Faramarz Dehghani
- Department of Anatomy and Cell Biology, Medical Faculty, Martin Luther University Halle-Wittenberg, Grosse Steinstrasse 52, 06108 Halle (Saale), Germany
| |
Collapse
|
9
|
Bennet BM, Pardo ID, Assaf BT, Buza E, Cramer SD, Crawford LK, Engelhardt JA, Galbreath EJ, Grubor B, Morrison JP, Osborne TS, Sharma AK, Bolon B. Scientific and Regulatory Policy Committee Technical Review: Biology and Pathology of Ganglia in Animal Species Used for Nonclinical Safety Testing. Toxicol Pathol 2023; 51:278-305. [PMID: 38047294 DOI: 10.1177/01926233231213851] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Dorsal root ganglia (DRG), trigeminal ganglia (TG), other sensory ganglia, and autonomic ganglia may be injured by some test article classes, including anti-neoplastic chemotherapeutics, adeno-associated virus-based gene therapies, antisense oligonucleotides, nerve growth factor inhibitors, and aminoglycoside antibiotics. This article reviews ganglion anatomy, cytology, and pathology (emphasizing sensory ganglia) among common nonclinical species used in assessing product safety for such test articles (TAs). Principal histopathologic findings associated with sensory ganglion injury include neuron degeneration, necrosis, and/or loss; increased satellite glial cell and/or Schwann cell numbers; and leukocyte infiltration and/or inflammation. Secondary nerve fiber degeneration and/or glial reactions may occur in nerves, dorsal spinal nerve roots, spinal cord (dorsal and occasionally lateral funiculi), and sometimes the brainstem. Ganglion findings related to TA administration may result from TA exposure and/or trauma related to direct TA delivery into the central nervous system or ganglia. In some cases, TA-related effects may need to be differentiated from a spectrum of artifactual and/or spontaneous background changes.
Collapse
Affiliation(s)
| | | | | | - Elizabeth Buza
- University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | | | | | | | | | - James P Morrison
- Charles River Laboratories, Inc., Shrewsbury, Massachusetts, USA
| | | | | | | |
Collapse
|
10
|
Liu J, Wong SSC. Molecular Mechanisms and Pathophysiological Pathways of High-Fat Diets and Caloric Restriction Dietary Patterns on Pain. Anesth Analg 2023; 137:137-152. [PMID: 36729981 DOI: 10.1213/ane.0000000000006289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Pain perception provides evolutionary advantages by enhancing the probability of survival, but chronic pain continues to be a significant global health concern in modern society. Various factors are associated with pain alteration. Accumulating evidence has revealed that obesity correlates with enhanced pain perception, especially in chronic pain individuals. Existing dietary patterns related to obesity are primarily high-fat diets (HFD) and calorie restriction (CR) diets, which induce or alleviate obesity separately. HFD has been shown to enhance nociception while CR tends to alleviate pain when measuring pain outcomes. Herein, this review mainly summarizes the current knowledge of the effects of HFD and CR on pain responses and underlying molecular mechanisms of the immunological factors, metabolic regulation, inflammatory processes, Schwann cell (SC) autophagy, gut microbiome, and other pathophysiological signaling pathways involved. This review would help to provide insights on potential nonpharmacological strategies of dietary patterns in relieving pain.
Collapse
Affiliation(s)
- Jingjing Liu
- From the Department of Anesthesiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine
- Laboratory and Clinical Research Institute for Pain, Department of Anesthesiology, The University of Hong Kong, Hong Kong SAR, P.R.C
| | - Stanley Sau Ching Wong
- From the Department of Anesthesiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine
- Laboratory and Clinical Research Institute for Pain, Department of Anesthesiology, The University of Hong Kong, Hong Kong SAR, P.R.C
| |
Collapse
|
11
|
Effects of Semaphorin3A on the growth of sensory and motor neurons. Exp Cell Res 2023; 424:113506. [PMID: 36764590 DOI: 10.1016/j.yexcr.2023.113506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 02/02/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023]
Abstract
After peripheral nerve injury, motor and sensory axons can regenerate, but the inaccurate reinnervation of the target leads to poor functional recovery. Schwann cells (SCs) express sensory and motor phenotypes associated with selective regeneration. Semaphorin 3A (Sema3A) is an axonal chemorepellent that plays an essential role in axon growth. SCs can secret Sema3A, and Sema3A presents a different expression pattern at the proximal and distal ends of injured sensory and motor nerves. Hence, in our study, the protein expression and secretion of Sema3A in sensory and motor SCs and the expression of its receptor Neuropilin-1 (Nrp1) in dorsal root ganglia (DRG) sensory neurons (SNs) and spinal cord motor neurons (MNs) were detected by Western blot and ELISA. The effect of Sema3A at different concentrations on neurite growth of sensory and motor neurons was observed by immunostaining. Also, by blocking the Nrp1 receptor on neurons, the effect of Sema3A on neurite growth was observed. Finally, we observed the neurite growth of sensory and motor neurons cocultured with Sema3A siRNA transfected SCs by immunostaining. The results suggested that the expression and secretion of Sema3A in sensory SCs are more significant than that in motor SCs, and the expression of its receptor Nrp1 in SNs is higher than in MNs. Sema3A could inhibit the neurite growth of sensory and motor neurons via Nrp1, and Sema3A has a more substantial effect on the neurite growth of SNs. These data provide evidence that SC-secreted Sema3A might play a role in selective regeneration by a preferential effect on SNs.
Collapse
|
12
|
Gala DS, Titlow JS, Teodoro RO, Davis I. Far from home: the role of glial mRNA localization in synaptic plasticity. RNA (NEW YORK, N.Y.) 2023; 29:153-169. [PMID: 36442969 PMCID: PMC9891262 DOI: 10.1261/rna.079422.122] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Neurons and glia are highly polarized cells, whose distal cytoplasmic functional subdomains require specific proteins. Neurons have axonal and dendritic cytoplasmic extensions containing synapses whose plasticity is regulated efficiently by mRNA transport and localized translation. The principles behind these mechanisms are equally attractive for explaining rapid local regulation of distal glial cytoplasmic projections, independent of their cell nucleus. However, in contrast to neurons, mRNA localization has received little experimental attention in glia. Nevertheless, there are many functionally diverse glial subtypes containing extensive networks of long cytoplasmic projections with likely localized regulation that influence neurons and their synapses. Moreover, glia have many other neuron-like properties, including electrical activity, secretion of gliotransmitters and calcium signaling, influencing, for example, synaptic transmission, plasticity and axon pruning. Here, we review previous studies concerning glial transcripts with important roles in influencing synaptic plasticity, focusing on a few cases involving localized translation. We discuss a variety of important questions about mRNA transport and localized translation in glia that remain to be addressed, using cutting-edge tools already available for neurons.
Collapse
Affiliation(s)
- Dalia S Gala
- Department of Biochemistry, The University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Joshua S Titlow
- Department of Biochemistry, The University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Rita O Teodoro
- iNOVA4Health, NOVA Medical School-Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa 1169-056, Portugal
| | - Ilan Davis
- Department of Biochemistry, The University of Oxford, Oxford OX1 3QU, United Kingdom
| |
Collapse
|
13
|
Pero ME, Chowdhury F, Bartolini F. Role of tubulin post-translational modifications in peripheral neuropathy. Exp Neurol 2023; 360:114274. [PMID: 36379274 PMCID: PMC11320756 DOI: 10.1016/j.expneurol.2022.114274] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/06/2022] [Accepted: 11/08/2022] [Indexed: 11/14/2022]
Abstract
Peripheral neuropathy is a common disorder that results from nerve damage in the periphery. The degeneration of sensory axon terminals leads to changes or loss of sensory functions, often manifesting as debilitating pain, weakness, numbness, tingling, and disability. The pathogenesis of most peripheral neuropathies remains to be fully elucidated. Cumulative evidence from both early and recent studies indicates that tubulin damage may provide a common underlying mechanism of axonal injury in various peripheral neuropathies. In particular, tubulin post-translational modifications have been recently implicated in both toxic and inherited forms of peripheral neuropathy through regulation of axonal transport and mitochondria dynamics. This knowledge forms a new area of investigation with the potential for developing therapeutic strategies to prevent or delay peripheral neuropathy by restoring tubulin homeostasis.
Collapse
Affiliation(s)
- Maria Elena Pero
- Department of Pathology and Cell Biology, Columbia University, New York, USA; Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Italy
| | - Farihah Chowdhury
- Department of Pathology and Cell Biology, Columbia University, New York, USA
| | - Francesca Bartolini
- Department of Pathology and Cell Biology, Columbia University, New York, USA.
| |
Collapse
|
14
|
Wang X, Xu G, Liu H, Chen Z, Huang S, Yuan J, Xie C, Du L. Inhibiting apoptosis of Schwann cell under the high-glucose condition: A promising approach to treat diabetic peripheral neuropathy using Chinese herbal medicine. Biomed Pharmacother 2023; 157:114059. [PMID: 36462309 DOI: 10.1016/j.biopha.2022.114059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 11/15/2022] [Accepted: 11/27/2022] [Indexed: 12/05/2022] Open
Abstract
Diabetic peripheral neuropathy (DPN) is a common complication of diabetes. Glycemic control and lifestyle alterations cannot prevent the development of DPN; therefore, investigating effective treatments for DPN is crucial. Schwann cells (SCs) maintain the physiological function of peripheral nerves and promote the repair and regeneration of injured nerves. Inhibiting the apoptosis of SCs through various pathological pathways in a high-glucose environment plays an important role in developing DPN. Therefore, inhibiting the apoptosis of SCs can be a novel treatment strategy for DPN. Previous studies have indicated the potential of Chinese herbal medicine (CHM) in treating DPN. In this study, we have reviewed the effects of CHM (both monomers and extracts) on the apoptosis of SCs by interfering with the production of advanced glycation end products, oxidative stress, and endoplasmic reticulum stress pathological pathways. This review will demonstrate the potentialities of CHM in inhibiting apoptosis in SCs, providing new insights and perspectives for treating DPN.
Collapse
Affiliation(s)
- Xueru Wang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu610072, Sichuan, China; TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Chengdu, 610072, Sichuan, China.
| | - Gang Xu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu610072, Sichuan, China; TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Chengdu, 610072, Sichuan, China.
| | - Hanyu Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu610072, Sichuan, China.
| | - Zhengtao Chen
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu610072, Sichuan, China.
| | - Susu Huang
- College of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, Sichuan, China.
| | - Jiushu Yuan
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu610072, Sichuan, China.
| | - Chunguang Xie
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu610072, Sichuan, China; TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Chengdu, 610072, Sichuan, China.
| | - Lian Du
- College of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, Sichuan, China.
| |
Collapse
|
15
|
Li X, Zhang D, Shi H, Jing B, Chen Z, Zheng Y, Chang S, Gao L, Zhao G. Identification of pyroptosis‑related genes in neuropathic pain based on bioinformatics analysis. Exp Ther Med 2022; 25:46. [PMID: 36588812 PMCID: PMC9780700 DOI: 10.3892/etm.2022.11745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 10/28/2022] [Indexed: 12/12/2022] Open
Abstract
Pyroptosis is defined as inflammation-induced programmed cell death. However, gene expression levels related to pyroptosis and their role in neuropathic pain (NP) remain unclear. The present study aimed to develop and validate an NP-predictive signature based on the genes associated with pyroptosis. Gene expression level profiles were downloaded from the Gene Expression Omnibus database. Weighted gene co-expression network analysis was used to identify the pyroptotic genes most highly associated with NP. NP-related pyroptosis gene signature was constructed using multivariate logistic regression. A rat model of neuropathic pain was established through chronic constriction injury to analyse the inflammatory infiltration and myelin damage around the sciatic nerve, and examine the expression levels of macrophage markers S100 calcium-binding protein β (S100β) and ionized calcium-binding adapter molecule 1 (Iba-1). Finally, flow cytometry analysis was used to examine the lipopolysaccharide (LPS)-induced cell death ratio of RSC96 cells (Schwann cells), while the expression levels of LPS-induced pyroptosis-related genes in RSC96 cells were measured via reverse transcription-quantitative PCR. The results demonstrated that pyroptosis-related genes (gasdermin D, NLR family pyrin domain containing 3, neuronal apoptosis inhibitory protein and NLR family CARD domain containing 4) were identified to increase the risk of NP. NP-related pyroptosis signatures were constructed based on these four genes. Moreover, the high-risk group had a higher level of macrophage infiltration compared with the low-risk group, as determined by the CIBERSORT algorithm. H&E staining results showed that the myelin structure of the sciatic nerve tissue of chronic constriction injury (CCI) rats was destroyed and inflammatory cells infiltrated around neurons. The results of immunohistochemistry showed that compared with in the sham group, the expression levels of Iba-1 and sS100β in the sciatic nerve of the CCI group were increased. Furthermore, the expression levels of cell death and pyroptosis-related genes in Schwann cells induced by LPS were increased compared with in the control group. In conclusion, an NP-related pyroptosis gene signature was constructed based on four pyroptosis-related genes and it was found that the expression of pyroptosis-related genes was upregulated in the early steps of the neuroinflammatory process in RSC96 cells.
Collapse
Affiliation(s)
- Xin Li
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Di Zhang
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Huimei Shi
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Bei Jing
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Zhenni Chen
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Yachun Zheng
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Shiquan Chang
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Li Gao
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China,Correspondence to: Professor Guoping Zhao or Dr Li Gao, College of Traditional Chinese Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou, Guangdong 510632, P.R. China
| | - Guoping Zhao
- College of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China,Correspondence to: Professor Guoping Zhao or Dr Li Gao, College of Traditional Chinese Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou, Guangdong 510632, P.R. China
| |
Collapse
|
16
|
Zhang Y, Niu Y, Weng Q. Ginkgetin promotes proliferation and migration of Schwann cells via PIGF/p38 MAPK signaling pathway. Tissue Cell 2022; 79:101967. [DOI: 10.1016/j.tice.2022.101967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/26/2022] [Accepted: 10/29/2022] [Indexed: 11/09/2022]
|
17
|
Russell DF, Zhang W, Warnock TC, Neiman LL. Lectin binding and gel secretion within Lorenzinian electroreceptors of Polyodon. PLoS One 2022; 17:e0276854. [PMCID: PMC9671328 DOI: 10.1371/journal.pone.0276854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 10/16/2022] [Indexed: 11/19/2022] Open
Abstract
We imaged the carbohydrate-selective spatial binding of 8 lectins in the ampullary organs (AOs) of electroreceptors on the rostrum of freshwater paddlefish (Polyodon spathula), by fluorescence imaging and morphometry of frozen sections. A focus was candidate sites of secretion of the glycoprotein gel filling the lumen of AOs. The rostrum of Polyodon is an electrosensory appendage anterior of the head, covered with >50,000 AOs, each homologous with the ampulla of Lorenzini electroreceptors of marine rays and sharks. A large electrosensory neuroepithelium (EN) lines the basal pole of each AO’s lumen in Polyodon; support cells occupy most (97%) of an EN’s apical area, along with electrosensitive receptor cells. (1) Lectins WGA or SBA labeled the AO gel. High concentrations of the N-acetyl-aminocarbohydrate ligands of these lectins were reported in canal gel of ampullae of Lorenzini, supporting homology of Polyodon AOs. In cross sections of EN, WGA or SBA labeled cytoplasmic vesicles and organelles in support cells, especially apically, apparently secretory. Abundant phalloidin+ microvilli on the apical faces of support cells yielded the brightest label by lectins WGA or SBA. In parallel views of the apical EN surface, WGA labeled only support cells. We concluded that EN support cells massively secrete gel from their apical microvilli (and surface?), containing amino carbohydrate ligands of WGA or SBA, into the AO lumen. (2) Lectins RCA120 or ConA also labeled EN support cells, each differently. RCA120-fluorescein brightly labeled extensive Golgi tubules in the apical halves of EN cells. ConA did not label microvilli, but brightly labeled small vesicles throughout support cells, apparently non-secretory. (3) We demonstrated “sockets” surrounding the basolateral exteriors of EN receptor cells, as candidate glycocalyces. (4) We explored whether additional secretions may arise from non-EN epithelial cells of the interior ampulla wall. (5) Model: Gel is secreted mainly by support cells in the large EN covering each AO’s basal pole. Secreted gel is pushed toward the pore, and out. We modeled gel velocity as increasing ~11x, going distally in AOs (toward the narrowed neck and pore), due to geometrical taper of the ampulla wall. Gel renewal and accelerated expulsion may defend against invasion of the AO lumen by microbes or small parasites. (6) We surveyed lectin labeling of accessory structures, including papilla cells in AO necks, striated ectoderm epidermis, and sheaths on afferent axons or on terminal glia.
Collapse
Affiliation(s)
- David F. Russell
- Department of Biological Sciences, Neuroscience Program, Department of Physics and Astronomy, Ohio University, Athens, Ohio, United States of America
- * E-mail: ,
| | - Wenjuan Zhang
- Honors Tutorial College, Ohio University, Athens, Ohio, United States of America
| | - Thomas C. Warnock
- Department of Physics and Astronomy, Ohio University, Athens, Ohio, United States of America
| | - Lilia L. Neiman
- Department of Biological Sciences, Ohio University, Athens, Ohio, United States of America
| |
Collapse
|
18
|
Reed CB, Feltri ML, Wilson ER. Peripheral glia diversity. J Anat 2022; 241:1219-1234. [PMID: 34131911 PMCID: PMC8671569 DOI: 10.1111/joa.13484] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/20/2021] [Accepted: 05/26/2021] [Indexed: 12/13/2022] Open
Abstract
Recent years have seen an evolving appreciation for the role of glial cells in the nervous system. As we move away from the typical neurocentric view of neuroscience, the complexity and variability of central nervous system glia is emerging, far beyond the three main subtypes: astrocytes, oligodendrocytes, and microglia. Yet the diversity of the glia found in the peripheral nervous system remains rarely discussed. In this review, we discuss the developmental origin, morphology, and function of the different populations of glia found in the peripheral nervous system, including: myelinating Schwann cells, Remak Schwann cells, repair Schwann cells, satellite glia, boundary cap-derived glia, perineurial glia, terminal Schwann cells, glia found in the skin, olfactory ensheathing cells, and enteric glia. The morphological and functional heterogeneity of glia found in the periphery reflects the diverse roles the nervous system performs throughout the body. Further, it highlights a complexity that should be appreciated and considered when it comes to a complete understanding of the peripheral nervous system in health and disease.
Collapse
Affiliation(s)
- Chelsey B Reed
- Hunter James Kelly Research Institute, Jacobs School of Medicine and Biomedical Sciences State, University of New York at Buffalo, Buffalo, New York, USA
- Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - M Laura Feltri
- Hunter James Kelly Research Institute, Jacobs School of Medicine and Biomedical Sciences State, University of New York at Buffalo, Buffalo, New York, USA
- Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Emma R Wilson
- Hunter James Kelly Research Institute, Jacobs School of Medicine and Biomedical Sciences State, University of New York at Buffalo, Buffalo, New York, USA
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| |
Collapse
|
19
|
Polyneuropathy Associated with IgM Monoclonal Gammopathy; Advances in Genetics and Treatment, Focusing on Anti-MAG Antibodies. HEMATO 2022. [DOI: 10.3390/hemato3040045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
With increasing age, the chances of developing either MGUS or polyneuropathy increase as well. In some cases, there is a causative relationship between the IgM M-protein and polyneuropathy. In approximately half of these cases, IgM targets the myelin-associated glycoprotein (MAG). This results in chronic polyneuropathy with slowly progressive, predominantly sensory neurological deficits and distally demyelinating features in nerve conduction studies. Despite the disease being chronic and developing slowly, it can cause considerable impairment. We reviewed English medical publications between 1980 and May 2022 on IgM gammopathy-associated polyneuropathy, with special attention to studies addressing the pathophysiology or treatment of anti-MAG polyneuropathy. Treatment options have been limited to a temporizing effect of intravenous immunoglobulins in some patients and a more sustained effect of rituximab but in only 30 to 55 percent of patients. An increase in our knowledge concerning genetic mutations, particularly the MYD88L265P mutation, led to the development of novel targeted treatment options such as BTK inhibitors. Similarly, due to the increasing knowledge of the pathophysiology of anti-MAG polyneuropathy, new treatment options are emerging. Since anti-MAG polyneuropathy is a rare disease with diverse symptomatology, large trials with good outcome measures are a challenge.
Collapse
|
20
|
Chu TH, Baral K, Labit E, Rosin N, Sinha S, Umansky D, Alzahrani S, Rancourt D, Biernaskie J, Midha R. Comparison of human skin- and nerve-derived Schwann cells reveals many similarities and subtle genomic and functional differences. Glia 2022; 70:2131-2156. [PMID: 35796321 DOI: 10.1002/glia.24242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/24/2022] [Accepted: 06/24/2022] [Indexed: 11/08/2022]
Abstract
Skin is an easily accessible tissue and a rich source of Schwann cells (SCs). Toward potential clinical application of autologous SC therapies, we aim to improve the reliability and specificity of our protocol to obtain SCs from small skin samples. As well, to explore potential functional distinctions between skin-derived SCs (Sk-SCs) and nerve-derived SCs (N-SCs), we used single-cell RNA-sequencing and a series of in vitro and in vivo assays. Our results showed that Sk-SCs expressed typical SC markers. Single-cell sequencing of Sk- and N-SCs revealed an overwhelming overlap in gene expression with the exception of HLA genes which were preferentially up-regulated in Sk-SCs. In vitro, both cell types exhibited similar levels of proliferation, migration, uptake of myelin debris and readily associated with neurites when co-cultured with human iPSC-induced motor neurons. Both exhibited ensheathment of multiple neurites and early phase of myelination, especially in N-SCs. Interestingly, dorsal root ganglion (DRG) neurite outgrowth assay showed substantially more complexed neurite outgrowth in DRGs exposed to Sk-SC conditioned media compared to those from N-SCs. Multiplex ELISA array revealed shared growth factor profiles, but Sk-SCs expressed a higher level of VEGF. Transplantation of Sk- and N-SCs into injured peripheral nerve in nude rats and NOD-SCID mice showed close association of both SCs to regenerating axons. Myelination of rodent axons was observed infrequently by N-SCs, but absent in Sk-SC xenografts. Overall, our results showed that Sk-SCs share near-identical properties to N-SCs but with subtle differences that could potentially enhance their therapeutic utility.
Collapse
Affiliation(s)
- Tak-Ho Chu
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Kabita Baral
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Elodie Labit
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Nicole Rosin
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Sarthak Sinha
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Daniel Umansky
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - Saud Alzahrani
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - Derrick Rancourt
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jeff Biernaskie
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Rajiv Midha
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
21
|
Malara M, Lutz AK, Incearap B, Bauer HF, Cursano S, Volbracht K, Lerner JJ, Pandey R, Delling JP, Ioannidis V, Arévalo AP, von Bernhardi JE, Schön M, Bockmann J, Dimou L, Boeckers TM. SHANK3 deficiency leads to myelin defects in the central and peripheral nervous system. Cell Mol Life Sci 2022; 79:371. [PMID: 35726031 PMCID: PMC9209365 DOI: 10.1007/s00018-022-04400-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/11/2022] [Accepted: 05/25/2022] [Indexed: 01/04/2023]
Abstract
Mutations or deletions of the SHANK3 gene are causative for Phelan–McDermid syndrome (PMDS), a syndromic form of autism spectrum disorders (ASDs). We analyzed Shank3Δ11(−/−) mice and organoids from PMDS individuals to study effects on myelin. SHANK3 was found to be expressed in oligodendrocytes and Schwann cells, and MRI analysis of Shank3Δ11(−/−) mice revealed a reduced volume of the corpus callosum as seen in PMDS patients. Myelin proteins including myelin basic protein showed significant temporal and regional differences with lower levels in the CNS but increased amounts in the PNS of Shank3Δ11(−/−) animals. Node, as well as paranode, lengths were increased and ultrastructural analysis revealed region-specific alterations of the myelin sheaths. In PMDS hiPSC-derived cerebral organoids we observed an altered number and delayed maturation of myelinating cells. These findings provide evidence that, in addition to a synaptic deregulation, impairment of myelin might profoundly contribute to the clinical manifestation of SHANK3 deficiency.
Collapse
Affiliation(s)
- Mariagiovanna Malara
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
- International Graduate School in Molecular Medicine, IGradU, 89081, Ulm, Germany
| | - Anne-Kathrin Lutz
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
| | - Berra Incearap
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
- International Graduate School in Molecular Medicine, IGradU, 89081, Ulm, Germany
| | - Helen Friedericke Bauer
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
- International Graduate School in Molecular Medicine, IGradU, 89081, Ulm, Germany
| | - Silvia Cursano
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
| | - Katrin Volbracht
- Molecular and Translational Neuroscience, Department of Neurology, Ulm University, 89081, Ulm, Germany
| | - Joanna Janina Lerner
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
- International Graduate School in Molecular Medicine, IGradU, 89081, Ulm, Germany
| | - Rakshita Pandey
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
| | - Jan Philipp Delling
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
| | - Valentin Ioannidis
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
| | - Andrea Pérez Arévalo
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
| | | | - Michael Schön
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
| | - Jürgen Bockmann
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany
| | - Leda Dimou
- Molecular and Translational Neuroscience, Department of Neurology, Ulm University, 89081, Ulm, Germany
| | - Tobias M Boeckers
- Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein Allee 11, 89081, Ulm, Germany.
- DZNE, Ulm Site, 89081, Ulm, Germany.
| |
Collapse
|
22
|
Identification and quantification of nociceptive Schwann cells in mice with and without Streptozotocin-induced diabetes. J Chem Neuroanat 2022; 123:102118. [DOI: 10.1016/j.jchemneu.2022.102118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 06/03/2022] [Accepted: 06/04/2022] [Indexed: 12/31/2022]
|
23
|
Okuda H, Ishikawa T, Hori K, Kwankaew N, Ozaki N. Hedgehog signaling plays a crucial role in hyperalgesia associated with neuropathic pain in mice. J Neurochem 2022; 162:207-220. [PMID: 35437761 DOI: 10.1111/jnc.15613] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 03/24/2022] [Accepted: 03/27/2022] [Indexed: 11/29/2022]
Abstract
Neuropathic pain is a debilitating chronic syndrome of the nervous system caused by nerve injury. In Drosophila, the Hedgehog (Hh) signaling pathway is related to increased pain sensitivity (hyperalgesia) but does not affect the baseline nociceptive threshold. In general, the contribution of the Hh signaling pathway to neuropathic pain in vertebrates is a highly debated issue. Alternatively, we investigated the potential role of Hh signaling in mechanical allodynia using a mouse model of neuropathic pain. Seven days after spinal nerve-transection (SNT) surgery, microglial activation increased in the ipsilateral spinal dorsal horn compared with that in the sham group; however, 21 days after surgery, microglial activation decreased. Contrastingly, astrocyte activation in the spinal cord did not differ between the groups. On day 21 of postsurgery, the SNT group showed marked upregulation of sonic hedgehog expression in peripheral glial cells but not in dorsal root ganglion (DRG) neurons. Intrathecal administration of the Hh signaling inhibitor vismodegib attenuated the mechanical allodynia observed on day 21 postsurgery. Conversely, intrathecal treatment with the Hh signaling activator smoothened agonist in naive mice induced mechanical allodynia, which was abolished by the ATP transporter inhibitor clodronate. Moreover, inhibition of Hh signaling by pretreatment with vismodegib significantly reduced ATP secretion and the frequency/number of spontaneous elevations of intracellular calcium ion levels in cultured DRG cells. Thus, the Hh signaling pathway appears to modulate the neural activity of DRG neurons via ATP release, and it plays an important role in sustaining mechanical allodynia and hypersensitivity in a mouse model of neuropathic pain.
Collapse
Affiliation(s)
- Hiroaki Okuda
- Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Tatsuya Ishikawa
- Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Kiyomi Hori
- Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Nichakarn Kwankaew
- Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Noriyuki Ozaki
- Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| |
Collapse
|
24
|
Takahashi K, Nelvagal HR, Lange J, Cooper JD. Glial Dysfunction and Its Contribution to the Pathogenesis of the Neuronal Ceroid Lipofuscinoses. Front Neurol 2022; 13:886567. [PMID: 35444603 PMCID: PMC9013902 DOI: 10.3389/fneur.2022.886567] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 03/16/2022] [Indexed: 01/05/2023] Open
Abstract
While significant efforts have been made in developing pre-clinical treatments for the neuronal ceroid lipofuscinoses (NCLs), many challenges still remain to bring children with NCLs a cure. Devising effective therapeutic strategies for the NCLs will require a better understanding of pathophysiology, but little is known about the mechanisms by which loss of lysosomal proteins causes such devastating neurodegeneration. Research into glial cells including astrocytes, microglia, and oligodendrocytes have revealed many of their critical functions in brain homeostasis and potential contributions to neurodegenerative diseases. Genetically modified mouse models have served as a useful platform to define the disease progression in the central nervous system across NCL subtypes, revealing a wide range of glial responses to disease. The emerging evidence of glial dysfunction questions the traditional “neuron-centric” view of NCLs, and would suggest that directly targeting glia in addition to neurons could lead to better therapeutic outcomes. This review summarizes the most up-to-date understanding of glial pathologies and their contribution to the pathogenesis of NCLs, and highlights some of the associated challenges that require further research.
Collapse
Affiliation(s)
- Keigo Takahashi
- Pediatric Storage Disorders Laboratory, Department of Pediatrics, School of Medicine, Washington University in St. Louis, St. Louis, MO, United States
| | - Hemanth R. Nelvagal
- Department of Pharmacology, School of Pharmacy, University College London, London, United Kingdom
| | - Jenny Lange
- Zayed Centre for Research into Rare Disease in Children, Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
| | - Jonathan D. Cooper
- Pediatric Storage Disorders Laboratory, Department of Pediatrics, School of Medicine, Washington University in St. Louis, St. Louis, MO, United States
- Department of Genetics, School of Medicine, Washington University in St. Louis, St. Louis, MO, United States
- Department of Neurology, School of Medicine, Washington University in St. Louis, St. Louis, MO, United States
- *Correspondence: Jonathan D. Cooper
| |
Collapse
|
25
|
Wan R, Hussain A, Behfar A, Moran SL, Zhao C. The Therapeutic Potential of Exosomes in Soft Tissue Repair and Regeneration. Int J Mol Sci 2022; 23:ijms23073869. [PMID: 35409228 PMCID: PMC8998690 DOI: 10.3390/ijms23073869] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/28/2022] [Accepted: 03/28/2022] [Indexed: 12/12/2022] Open
Abstract
Soft tissue defects are common following trauma and tumor extirpation. These injuries can result in poor functional recovery and lead to a diminished quality of life. The healing of skin and muscle is a complex process that, at present, leads to incomplete recovery and scarring. Regenerative medicine may offer the opportunity to improve the healing process and functional outcomes. Barriers to regenerative strategies have included cost, regulatory hurdles, and the need for cell-based therapies. In recent years, exosomes, or extracellular vesicles, have gained tremendous attention in the field of soft tissue repair and regeneration. These nanosized extracellular particles (30-140 nm) can break the cellular boundaries, as well as facilitate intracellular signal delivery in various regenerative physiologic and pathologic processes. Existing studies have established the potential of exosomes in regenerating tendons, skeletal muscles, and peripheral nerves through different mechanisms, including promoting myogenesis, increasing tenocyte differentiation and enhancing neurite outgrowth, and the proliferation of Schwann cells. These exosomes can be stored for immediate use in the operating room, and can be produced cost efficiently. In this article, we critically review the current advances of exosomes in soft tissue (tendons, skeletal muscles, and peripheral nerves) healing. Additionally, new directions for clinical applications in the future will be discussed.
Collapse
Affiliation(s)
- Rou Wan
- Division of Plastic Surgery, Mayo Clinic, Rochester, MN 55905, USA; (R.W.); (A.H.); (S.L.M.)
| | - Arif Hussain
- Division of Plastic Surgery, Mayo Clinic, Rochester, MN 55905, USA; (R.W.); (A.H.); (S.L.M.)
| | - Atta Behfar
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55905, USA;
- Van Cleve Cardiac Regenerative Medicine Program, Center for Regenerative Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN 55905, USA
| | - Steven L. Moran
- Division of Plastic Surgery, Mayo Clinic, Rochester, MN 55905, USA; (R.W.); (A.H.); (S.L.M.)
| | - Chunfeng Zhao
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Correspondence:
| |
Collapse
|
26
|
Wang Q, Chen FY, Ling ZM, Su WF, Zhao YY, Chen G, Wei ZY. The Effect of Schwann Cells/Schwann Cell-Like Cells on Cell Therapy for Peripheral Neuropathy. Front Cell Neurosci 2022; 16:836931. [PMID: 35350167 PMCID: PMC8957843 DOI: 10.3389/fncel.2022.836931] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 02/02/2022] [Indexed: 12/11/2022] Open
Abstract
Peripheral neuropathy is a common neurological issue that leads to sensory and motor disorders. Over time, the treatment for peripheral neuropathy has primarily focused on medications for specific symptoms and surgical techniques. Despite the different advantages of these treatments, functional recovery remains less than ideal. Schwann cells, as the primary glial cells in the peripheral nervous system, play crucial roles in physiological and pathological conditions by maintaining nerve structure and functions and secreting various signaling molecules and neurotrophic factors to support both axonal growth and myelination. In addition, stem cells, including mesenchymal stromal cells, skin precursor cells and neural stem cells, have the potential to differentiate into Schwann-like cells to perform similar functions as Schwann cells. Therefore, accumulating evidence indicates that Schwann cell transplantation plays a crucial role in the resolution of peripheral neuropathy. In this review, we summarize the literature regarding the use of Schwann cell/Schwann cell-like cell transplantation for different peripheral neuropathies and the potential role of promoting nerve repair and functional recovery. Finally, we discuss the limitations and challenges of Schwann cell/Schwann cell-like cell transplantation in future clinical applications. Together, these studies provide insights into the effect of Schwann cells/Schwann cell-like cells on cell therapy and uncover prospective therapeutic strategies for peripheral neuropathy.
Collapse
Affiliation(s)
- Qian Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Fang-Yu Chen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Zhuo-Min Ling
- Medical School of Nantong University, Nantong, China
| | - Wen-Feng Su
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Ya-Yu Zhao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Gang Chen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
- Medical School of Nantong University, Nantong, China
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
- *Correspondence: Gang Chen,
| | - Zhong-Ya Wei
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
- Zhong-Ya Wei,
| |
Collapse
|
27
|
Li S, Li J, Xu H, Liu Y, Yang T, Yuan H. Progress in the efficacy and mechanism of spinal cord stimulation in neuropathological pain. IBRAIN 2022; 8:23-36. [PMID: 37786421 PMCID: PMC10529196 DOI: 10.1002/ibra.12020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/20/2021] [Accepted: 12/26/2021] [Indexed: 10/04/2023]
Abstract
Neuropathic pain (NP) is a long-term recurrent disease caused by somatosensory nervous system injury, with spontaneous pain, hyperalgesia, ectopic pain, and paresthesia as the main clinical manifestations. It adversely affects patients' quality of life. NP treatments often include medication, physical therapy, and invasive therapy; the first two therapies are generally ineffective for some NP patients. These patients sometimes rely on invasive therapy to alleviate pain. Spinal cord stimulation (SCS) is a very effective therapeutic method. SCS is a neuroregulatory method that involves placing the electrodes on the corresponding painful spinal cords. Pain is greatly alleviated after SCS. SCS has been proven to be an effective therapeutic method for the treatment of neurological pain. Furthermore, SCS provides a feasible approach for patients with unsuccessful drug treatment. This paper reviews the relevant literature of spinal cord electrical stimulation, focusing on the mechanism of action, clinical application, clinical efficacy and technical progress of spinal cord electrical stimulation. SCS is widely used in the treatment of NP diseases such as postherpetic neuralgia, back surgery failure syndrome, and phantom limb pain. With advancements in science and technology, tremendous progress has also been made in the spinal cord electrical stimulation method and good momentum has been maintained.
Collapse
Affiliation(s)
- Shun‐Lian Li
- Department of AnesthesiaZunyi Medical UniversityZunyiGuizhouChina
| | - Jing Li
- Department of AnesthesiaZunyi Medical UniversityZunyiGuizhouChina
| | - Hui‐Chan Xu
- Department of AnesthesiaZunyi Medical UniversityZunyiGuizhouChina
| | - Yu‐Cong Liu
- Department of AnesthesiaZunyi Medical UniversityZunyiGuizhouChina
| | - Ting‐Ting Yang
- Department of AnesthesiaZunyi Medical UniversityZunyiGuizhouChina
| | - Hao Yuan
- School of Basic MedicineKunming Medical UniversityKunmingYunnanChina
- Department of Spine SurgeryAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| |
Collapse
|
28
|
Bittner GD, Bushman JS, Ghergherehchi CL, Roballo KCS, Shores JT, Smith TA. Typical and atypical properties of peripheral nerve allografts enable novel strategies to repair segmental-loss injuries. J Neuroinflammation 2022; 19:60. [PMID: 35227261 PMCID: PMC8886977 DOI: 10.1186/s12974-022-02395-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 01/19/2022] [Indexed: 12/20/2022] Open
Abstract
AbstractWe review data showing that peripheral nerve injuries (PNIs) that involve the loss of a nerve segment are the most common type of traumatic injury to nervous systems. Segmental-loss PNIs have a poor prognosis compared to other injuries, especially when one or more mixed motor/sensory nerves are involved and are typically the major source of disability associated with extremities that have sustained other injuries. Relatively little progress has been made, since the treatment of segmental loss PNIs with cable autografts that are currently the gold standard for repair has slow and incomplete (often non-existent) functional recovery. Viable peripheral nerve allografts (PNAs) to repair segmental-loss PNIs have not been experimentally or clinically useful due to their immunological rejection, Wallerian degeneration (WD) of anucleate donor graft and distal host axons, and slow regeneration of host axons, leading to delayed re-innervation and producing atrophy or degeneration of distal target tissues. However, two significant advances have recently been made using viable PNAs to repair segmental-loss PNIs: (1) hydrogel release of Treg cells that reduce the immunological response and (2) PEG-fusion of donor PNAs that reduce the immune response, reduce and/or suppress much WD, immediately restore axonal conduction across the donor graft and re-innervate many target tissues, and restore much voluntary behavioral functions within weeks, sometimes to levels approaching that of uninjured nerves. We review the rather sparse cellular/biochemical data for rejection of conventional PNAs and their acceptance following Treg hydrogel and PEG-fusion of PNAs, as well as cellular and systemic data for their acceptance and remarkable behavioral recovery in the absence of tissue matching or immune suppression. We also review typical and atypical characteristics of PNAs compared with other types of tissue or organ allografts, problems and potential solutions for PNA use and storage, clinical implications and commercial availability of PNAs, and future possibilities for PNAs to repair segmental-loss PNIs.
Collapse
|
29
|
Özdağ Acarli AN, Klein T, Egenolf N, Sommer C, Üçeyler N. Subepidermal Schwann cell counts correlate with skin innervation - an exploratory study. Muscle Nerve 2022; 65:471-479. [PMID: 35020203 DOI: 10.1002/mus.27496] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 11/10/2022]
Abstract
INTRODUCTION/AIMS Schwann cell clusters have been described at the murine dermis-epidermis border. We quantified dermal Schwann cells in the skin of patients with small fiber neuropathy (SFN) compared to healthy controls to correlate with the clinical phenotype. METHODS Skin punch biopsies from the lower legs of 28 patients with SFN (eleven men, 17 women, median age 54 years [19-73]) and 9 healthy controls (five men, four women, median age 34 years [25-69]) were immunoreacted for S100 calcium-binding protein B as a Schwann cell marker, protein-gene product 9.5 as a pan-neuronal marker, and CD207 as a Langerhans cell marker. Intraepidermal nerve fiber density (IENFD) and subepidermal Schwann cell counts were determined. RESULTS Skin samples of patients with SFN showed lower IENFD (p<0.05), fewer Schwann cells/mm (p<0.01), and fewer Schwann cell clusters/mm (p<0.05) than controls. When comparing SFN patients with reduced (n=13, median age 53 years, 19-73 years) and normal distal (n=15, median age 54 years, 43-68 years) IENFD, the number of solitary Schwann cells/mm (p<0.01) and subepidermal nerve fibers associated with Schwann cell branches (p<0.05) were lower in patients with reduced IENFD. All three parameters positively correlated with distal IENFD (p<0.05 to p<0.01), while no correlation was found between Schwann cell counts and clinical pain characteristics. DISCUSSION Our data raise questions about the mechanisms underlying the interdependence of dermal Schwann cells and skin innervation in SFN. The temporal course and functional impact of Schwann cell presence and kinetics need further investigation.
Collapse
Affiliation(s)
| | - Thomas Klein
- Department of Neurology, University of Würzburg, Germany
| | - Nadine Egenolf
- Department of Neurology, University of Würzburg, Germany
| | - Claudia Sommer
- Department of Neurology, University of Würzburg, Germany
| | - Nurcan Üçeyler
- Department of Neurology, University of Würzburg, Germany
| |
Collapse
|
30
|
Negro S, Pirazzini M, Rigoni M. Models and methods to study Schwann cells. J Anat 2022; 241:1235-1258. [PMID: 34988978 PMCID: PMC9558160 DOI: 10.1111/joa.13606] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 12/22/2022] Open
Abstract
Schwann cells (SCs) are fundamental components of the peripheral nervous system (PNS) of all vertebrates and play essential roles in development, maintenance, function, and regeneration of peripheral nerves. There are distinct populations of SCs including: (1) myelinating SCs that ensheath axons by a specialized plasma membrane, called myelin, which enhances the conduction of electric impulses; (2) non‐myelinating SCs, including Remak SCs, which wrap bundles of multiple axons of small caliber, and perysinaptic SCs (PSCs), associated with motor axon terminals at the neuromuscular junction (NMJ). All types of SCs contribute to PNS regeneration through striking morphological and functional changes in response to nerve injury, are affected in peripheral neuropathies and show abnormalities and a diminished plasticity during aging. Therefore, methodological approaches to study and manipulate SCs in physiological and pathophysiological conditions are crucial to expand the present knowledge on SC biology and to devise new therapeutic strategies to counteract neurodegenerative conditions and age‐derived denervation. We present here an updated overview of traditional and emerging methodologies for the study of SCs for scientists approaching this research field.
Collapse
Affiliation(s)
- Samuele Negro
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Marco Pirazzini
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,CIR-Myo, Centro Interdipartimentale di Ricerca di Miologia, University of Padua, Padova, Italy
| | - Michela Rigoni
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,CIR-Myo, Centro Interdipartimentale di Ricerca di Miologia, University of Padua, Padova, Italy
| |
Collapse
|
31
|
Abstract
In the twentieth century, neuropsychiatric disorders have been perceived solely from a neurone-centric point of view, which considers neurones as the key cellular elements of pathological processes. This dogma has been challenged thanks to the better comprehension of the brain functioning, which, even if far from being complete, has revealed the complexity of interactions that exist between neurones and neuroglia. Glial cells represent a highly heterogeneous population of cells of neural (astroglia and oligodendroglia) and non-neural (microglia) origin populating the central nervous system. The variety of glia reflects the innumerable functions that glial cells perform to support functions of the nervous system. Aberrant execution of glial functions contributes to the development of neuropsychiatric pathologies. Arguably, all types of glial cells are implicated in the neuropathology; however, astrocytes have received particular attention in recent years because of their pleiotropic functions that make them decisive in maintaining cerebral homeostasis. This chapter describes the multiple roles of astrocytes in the healthy central nervous system and discusses the diversity of astroglial responses in neuropsychiatric disorders suggesting that targeting astrocytes may represent an effective therapeutic strategy.
Collapse
|
32
|
Abstract
Myelin is a key evolutionary specialization and adaptation of vertebrates formed by the plasma membrane of glial cells, which insulate axons in the nervous system. Myelination not only allows rapid and efficient transmission of electric impulses in the axon by decreasing capacitance and increasing resistance but also influences axonal metabolism and the plasticity of neural circuits. In this review, we will focus on Schwann cells, the glial cells which form myelin in the peripheral nervous system. Here, we will describe the main extrinsic and intrinsic signals inducing Schwann cell differentiation and myelination and how myelin biogenesis is achieved. Finally, we will also discuss how the study of human disorders in which molecules and pathways relevant for myelination are altered has enormously contributed to the current knowledge on myelin biology.
Collapse
Affiliation(s)
- Alessandra Bolino
- Human Inherited Neuropathies Unit, Institute of Experimental Neurology INSPE, Division of Neuroscience, IRCCS Ospedale San Raffaele, Via Olgettina 60, 20132, Milan, Italy.
| |
Collapse
|
33
|
Ki SM, Jeong HS, Lee JE. Primary Cilia in Glial Cells: An Oasis in the Journey to Overcoming Neurodegenerative Diseases. Front Neurosci 2021; 15:736888. [PMID: 34658775 PMCID: PMC8514955 DOI: 10.3389/fnins.2021.736888] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 08/31/2021] [Indexed: 12/29/2022] Open
Abstract
Many neurodegenerative diseases have been associated with defects in primary cilia, which are cellular organelles involved in diverse cellular processes and homeostasis. Several types of glial cells in both the central and peripheral nervous systems not only support the development and function of neurons but also play significant roles in the mechanisms of neurological disease. Nevertheless, most studies have focused on investigating the role of primary cilia in neurons. Accordingly, the interest of recent studies has expanded to elucidate the role of primary cilia in glial cells. Correspondingly, several reports have added to the growing evidence that most glial cells have primary cilia and that impairment of cilia leads to neurodegenerative diseases. In this review, we aimed to understand the regulatory mechanisms of cilia formation and the disease-related functions of cilia, which are common or specific to each glial cell. Moreover, we have paid close attention to the signal transduction and pathological mechanisms mediated by glia cilia in representative neurodegenerative diseases. Finally, we expect that this field of research will clarify the mechanisms involved in the formation and function of glial cilia to provide novel insights and ideas for the treatment of neurodegenerative diseases in the future.
Collapse
Affiliation(s)
- Soo Mi Ki
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, South Korea
| | - Hui Su Jeong
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, South Korea
| | - Ji Eun Lee
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, South Korea
- Samsung Medical Center, Samsung Biomedical Research Institute, Seoul, South Korea
| |
Collapse
|
34
|
Kuffler DP. Can lithium enhance the extent of axon regeneration and neurological recovery following peripheral nerve trauma? Neural Regen Res 2021; 17:948-952. [PMID: 34558506 PMCID: PMC8552832 DOI: 10.4103/1673-5374.324830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The clinical “gold standard” technique for attempting to restore function to nerves with a gap is to bridge the gap with sensory autografts. However, autografts induce good to excellent recovery only across short nerve gaps, in young patients, and when repairs are performed a short time post nerve trauma. Even under the best of conditions, < 50% of patients recover good recovery. Although many alternative techniques have been tested, none is as effective as autografts. Therefore, alternative techniques are required that increase the percentage of patients who recover function and the extent of their recovery. This paper examines the actions of lithium, and how it appears to trigger all the cellular and molecular events required to promote axon regeneration, and how both in animal models and clinically, lithium administration enhances both the extent of axon regeneration and neurological recovery. The paper proposes more extensive clinical testing of lithium for its ability and reliability to increase the extent of axon regeneration and functional recovery.
Collapse
Affiliation(s)
- Damien P Kuffler
- Institute of Neurobiology, Medical Sciences Campus, University of Puerto Rico, San Juan, PR, USA
| |
Collapse
|
35
|
Nieto-Nicolau N, López-Chicón P, Torrico C, Bolívar S, Contreras-Carreton E, Udina E, Navarro X, Casaroli-Marano RP, Fariñas O, Vilarrodona A. "Off-the-Shelf" Nerve Matrix Preservation. Biopreserv Biobank 2021; 20:48-58. [PMID: 34542324 DOI: 10.1089/bio.2020.0158] [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] [Indexed: 01/16/2023] Open
Abstract
Background: Decellularized human nerves overcome the limitations of the current treatments for large peripheral nerve injuries. However, the use of decellularized nerves requires an "off-the-shelf" availability for useful and actual clinical application. In this study, we addressed the preservation of the native and decellularized human nerve matrix in an integrative approach for tissue scaffold production. Materials and Methods: For native nerve matrix preservation analysis, we used histological examination and immunofluorescence to examine the structure, biomechanical assays to evaluate the tensile strength and Young's modulus, and analyzed the extracellular matrix (ECM) composition using enzyme-linked immunosorbent assay (ELISA) and biochemical assays for laminin, collagen and sulfated glycosaminoglycans (sGAG). After decellularization, nuclear remnants and DNA content were evaluated using 4',6-diamidino-2-phenylindole (DAPI) staining and the picogreen quantification assay, as well as immunofluorescence or ELISA for cell rests (S100 protein and myelin staining) evaluation. Decellularized cryopreserved scaffolds were assayed for biomechanics, ECM composition, and structural maintenance. Cytotoxicity assays were performed to evaluate the biocompatibility of the nerve matrix extracts after cryopreservation. Results: We compared different strategies for native nerve storage and found that preservation up to 7 days at 4°C in Roswell Park Memorial Institute medium maintained biomechanical properties, such as Young's modulus and tensile strength, along with the structure and ECM composition, regarding laminin, collagen, and sGAG. After a successful decellularization process, that eliminated cell remnants, nerve scaffolds were frozen in an "in house" formulated cryoprotectant, using an automatic controlled rate freezer. Nerve structure, ECM composition, and biomechanical properties were maintained before and after the freezing process in comparison with native nerves. The extracts of the nerve scaffolds after thawing were not cytotoxic and the freezing process sustained good viability in 3T3 cells (graphical abstract). Conclusion: Since our approach facilitates transport, storage, and provide a ready-to-use alternative, it could be used in a clinical application for the treatment of long-gap peripheral nerve injuries in regenerative medicine.
Collapse
Affiliation(s)
- Nuria Nieto-Nicolau
- Barcelona Tissue Bank (BTB), Banc de Sang i Teixits (BST), Barcelona, Spain.,Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain
| | - Patricia López-Chicón
- Barcelona Tissue Bank (BTB), Banc de Sang i Teixits (BST), Barcelona, Spain.,Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain
| | - Carlos Torrico
- Barcelona Tissue Bank (BTB), Banc de Sang i Teixits (BST), Barcelona, Spain
| | - Sara Bolívar
- Department of Cell Biology, Physiology and Immunology, Institute of Neuroscience, Universitat Autónoma de Barcelona, and CIBERNED, Bellaterra, Spain
| | - Estefania Contreras-Carreton
- Department of Cell Biology, Physiology and Immunology, Institute of Neuroscience, Universitat Autónoma de Barcelona, and CIBERNED, Bellaterra, Spain
| | - Esther Udina
- Department of Cell Biology, Physiology and Immunology, Institute of Neuroscience, Universitat Autónoma de Barcelona, and CIBERNED, Bellaterra, Spain
| | - Xavier Navarro
- Department of Cell Biology, Physiology and Immunology, Institute of Neuroscience, Universitat Autónoma de Barcelona, and CIBERNED, Bellaterra, Spain
| | - Ricardo P Casaroli-Marano
- Barcelona Tissue Bank (BTB), Banc de Sang i Teixits (BST), Barcelona, Spain.,Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain.,Department of Surgery, School of Medicine & Hospital Clinic de Barcelona, University of Barcelona, Barcelona, Spain
| | - Oscar Fariñas
- Barcelona Tissue Bank (BTB), Banc de Sang i Teixits (BST), Barcelona, Spain.,Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain
| | - Anna Vilarrodona
- Barcelona Tissue Bank (BTB), Banc de Sang i Teixits (BST), Barcelona, Spain.,Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain
| |
Collapse
|
36
|
Wong FC, Ye L, Demir IE, Kahlert C. Schwann cell-derived exosomes: Janus-faced mediators of regeneration and disease. Glia 2021; 70:20-34. [PMID: 34519370 DOI: 10.1002/glia.24087] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 12/20/2022]
Abstract
The phenotypic plasticity of Schwann cells (SCs) has contributed to the regenerative potential of the peripheral nervous system (PNS), but also pathological processes. This double-sided effect has led to an increasing attention to the role of extracellular vesicles (EVs) or exosomes in SCs to examine the intercellular communication between SCs and their surroundings. Here, we first describe the current knowledge of SC and EV biology, which forms the basis for the updates on advances in SC-derived exosomes research. We seek to explore in-depth the exosome-mediated molecular mechanisms involved in the regulation of SCs and their microenvironment. This review concludes with potential applications of SC-derived exosomes as delivery vehicles for therapeutics and biomarkers. The goal of this review is to emphasize the crucial role of SC-derived exosomes in the functional integration of the PNS, highlighting an emerging area in which there is much to explore and re-explore.
Collapse
Affiliation(s)
- Fang Cheng Wong
- Department of Visceral, Thoracic and Vascular Surgery, University Hospital and Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Linhan Ye
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.,Germany German Cancer Consortium (DKTK), Partner Site, Munich, Germany.,CRC 1321 Modelling and Targeting Pancreatic Cancer, Munich, Germany
| | - Ihsan Ekin Demir
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.,Germany German Cancer Consortium (DKTK), Partner Site, Munich, Germany.,Department of General Surgery, HPB-Unit, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey.,CRC 1321 Modelling and Targeting Pancreatic Cancer, Munich, Germany.,Else Kröner Clinician Scientist Professor for "Translational Pancreatic Surgery
| | - Christoph Kahlert
- Department of Visceral, Thoracic and Vascular Surgery, University Hospital and Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT/UCC), Dresden, Germany
| |
Collapse
|
37
|
Challenges of Cochlear Implantation in Intralabyrinthine Schwannoma Patients: Surgical Procedures and Auditory Outcome. J Clin Med 2021; 10:jcm10173899. [PMID: 34501346 PMCID: PMC8432191 DOI: 10.3390/jcm10173899] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 12/01/2022] Open
Abstract
Intralabyrinthine schwannoma (ILS) is a rare benign tumor of the inner ear potentially causing unilateral sensorineural hearing loss and vertigo. This study evaluated the outcome of one surgical session comprising microsurgical ILS resection and cochlear implantation in terms of surgical feasibility, complications, and auditory outcome. Ten clinically and histologically confirmed ILS patients included in this study (three women and seven men; mean age 56.4 ± 8.6) underwent surgery between July 2015 and February 2020. Eight patients had intracochlear tumor location; the remaining two had vestibulocochlear and intravestibular ILS. One of the three following methods was used for tumor removal: an extended cochleostomy, subtotal cochleoectomy, or a translabyrinthine approach. Although negligible improvement was observed in two of the patients, two patients were lost to follow-up, and one opted out from using CI, the speech perception of the five remaining ILS patients improved as per the Freiburg Monosyllable Test (FMT) from 0% before surgery to 45– 50% after the implantation. Our study supports the presented surgical approach’s feasibility and safety, enabling tumor removal and hearing restoration shortly after surgery.
Collapse
|
38
|
Yamazaki R, Osanai Y, Kouki T, Shinohara Y, Huang JK, Ohno N. Macroscopic detection of demyelinated lesions in mouse PNS with neutral red dye. Sci Rep 2021; 11:16906. [PMID: 34413421 PMCID: PMC8377033 DOI: 10.1038/s41598-021-96395-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 08/10/2021] [Indexed: 11/24/2022] Open
Abstract
Lysophosphatidylcholine (LPC)-induced demyelination is a versatile animal model that is frequently used to identify and examine molecular pathways of demyelination and remyelination in the central (CNS) and peripheral nervous system (PNS). However, identification of focally demyelinated lesion had been difficult and usually required tissue fixation, sectioning and histological analysis. Recently, a method for labeling and identification of demyelinated lesions in the CNS by intraperitoneal injection of neutral red (NR) dye was developed. However, it remained unknown whether NR can be used to label demyelinated lesions in PNS. In this study, we generated LPC-induced demyelination in sciatic nerve of mice, and demonstrated that the demyelinated lesions at the site of LPC injection were readily detectable at 7 days postlesion (dpl) by macroscopic observation of NR labeling. Moreover, NR staining gradually decreased from 7 to 21 dpl over the course of remyelination. Electron microscopy analysis of NR-labeled sciatic nerves at 7 dpl confirmed demyelination and myelin debris in lesions. Furthermore, fluorescence microscopy showed NR co-labeling with activated macrophages and Schwann cells in the PNS lesions. Together, NR labeling is a straightforward method that allows the macroscopic detection of demyelinated lesions in sciatic nerves after LPC injection.
Collapse
Affiliation(s)
- Reiji Yamazaki
- Department of Anatomy, Division of Histology and Cell Biology, School of Medicine, Jichi Medical University, Shimotsuke, Japan.
| | - Yasuyuki Osanai
- Department of Anatomy, Division of Histology and Cell Biology, School of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Tom Kouki
- Department of Anatomy, Division of Histology and Cell Biology, School of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Yoshiaki Shinohara
- Department of Anatomy, Division of Histology and Cell Biology, School of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Jeffrey K Huang
- Department of Biology and Center for Cell Reprogramming, Georgetown University, Washington, DC, 20057, USA
| | - Nobuhiko Ohno
- Department of Anatomy, Division of Histology and Cell Biology, School of Medicine, Jichi Medical University, Shimotsuke, Japan
- Division of Ultrastructural Research, National Institute for Physiological Sciences, Okazaki, Japan
| |
Collapse
|
39
|
Abstract
Schwann cells are components of the peripheral nerve myelin sheath, which supports and nourishes axons. Upon injury of the trigeminal nerve, Schwann cells are activated and cause trigeminal neuralgia by engulfing the myelin sheath and secreting various neurotrophic factors. Further, Schwann cells can repair the damaged nerve and thus alleviate trigeminal neuralgia. Here, we briefly describe the development and activation of Schwann cells after nerve injury. Moreover, we expound on the occurrence, regulation, and treatment of trigeminal neuralgia; further, we point out the current research deficiencies and future research directions.
Collapse
Affiliation(s)
- Jia-Yi Liao
- Stomatology College of Nanchang University, Nanchang, China
| | - Tian-Hua Zhou
- Basic Medical School, Nanchang University, Nanchang, China
| | - Bao-Kang Chen
- First Clinical Medical College of Nanchang University, Nanchang, China
| | - Zeng-Xu Liu
- Department of Anatomy, Basic Medical School, Nanchang University, Nanchang, China
| |
Collapse
|
40
|
Kim JH, Park SH, Han J, Ko PW, Kwon D, Suk K. Gliome database: a comprehensive web-based tool to access and analyze glia secretome data. DATABASE-THE JOURNAL OF BIOLOGICAL DATABASES AND CURATION 2021; 2020:5879255. [PMID: 32743661 PMCID: PMC7396318 DOI: 10.1093/database/baaa057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/12/2020] [Accepted: 07/02/2020] [Indexed: 12/15/2022]
Abstract
Glial cells are phenotypically heterogeneous non-neuronal components of the central and peripheral nervous systems. These cells are endowed with diverse functions and molecular machineries to detect and regulate neuronal or their own activities by various secreted mediators, such as proteinaceous factors. In particular, glia-secreted proteins form a basis of a complex network of glia-neuron or glia-glia interactions in health and diseases. In recent years, the analysis and profiling of glial secretomes have raised new expectations for the diagnosis and treatment of neurological disorders due to the vital role of glia in numerous physiological or pathological processes of the nervous system. However, there is no online database of glia-secreted proteins available to facilitate glial research. Here, we developed a user-friendly 'Gliome' database (available at www.gliome.org), a web-based tool to access and analyze glia-secreted proteins. The database provides a vast collection of information on 3293 proteins that are released from glia of multiple species and have been reported to have differential functions under diverse experimental conditions. It contains a web-based interface with the following four key features regarding glia-secreted proteins: (i) fundamental information, such as signal peptide, SecretomeP value, functions and Gene Ontology category; (ii) differential expression patterns under distinct experimental conditions; (iii) disease association; and (iv) interacting proteins. In conclusion, the Gliome database is a comprehensive web-based tool to access and analyze glia-secretome data obtained from diverse experimental settings, whereby it may facilitate the integration of bioinformatics into glial research.
Collapse
Affiliation(s)
- Jong-Heon Kim
- Brain Science and Engineering Institute, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944, Republic of Korea
| | - Su-Hyeong Park
- Department of Pharmacology, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944, Republic of Korea.,D&P BIOTECH, 807 Hoguk-ro, Buk-gu, Daegu, 41404, Republic of Korea
| | - Jin Han
- Department of Pharmacology, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944, Republic of Korea
| | - Pan-Woo Ko
- Department of Neurology, Kyungpook National University Chilgok Hospital, 807 Hoguk-ro, Buk-gu, Daegu, 41404, Republic of Korea
| | - Dongseop Kwon
- School of Software Convergence, Myongji University, 34 Geobukgol-ro, Seodaemun-gu, Seoul, 03674, Republic of Korea
| | - Kyoungho Suk
- Brain Science and Engineering Institute, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944, Republic of Korea.,Department of Pharmacology, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944, Republic of Korea
| |
Collapse
|
41
|
GFAP and desmin expression in lymphatic tissues leads to difficulties in distinguishing between glial and stromal cells. Sci Rep 2021; 11:13322. [PMID: 34172765 PMCID: PMC8233388 DOI: 10.1038/s41598-021-92364-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 06/07/2021] [Indexed: 11/12/2022] Open
Abstract
Recently, we found many immune cells including antigen presenting cells neurally hard wired in the T-cell zone of most lymphoid organs like amongst others, lymph nodes in rats, mice and humans. Single immune cells were reached by single neurites and enclosed with a dense neural meshwork. As it is well known that axons are always accompanied by glial cells, we were able to identify Schwann cells in the hilum, medullary and capsule region, like expected. Unexpected was the result, that we found oligodendrocyte-like cells in these regions, myelinating more than one axon. Likewise important was the finding, that one of the standard glial markers used, a polyclonal GFAP antibody equally bound to desmin and therefore marked nearly all stromal cells in cortical, paracortical and medullary cord regions. More detailed analysis showed that these results also appeared in many other non-lymphoid organs. Therefore, polyclonal GFAP antibodies are only conditionally usable for immunohistochemical analysis in peripheral tissues outside the central nervous system. It remains to be elucidated, if the binding of the GFAP antibody to desmin has its reason in a special desmin variant that can give stromal cells glial character.
Collapse
|
42
|
Welleford AS, Quintero JE, Seblani NE, Blalock E, Gunewardena S, Shapiro SM, Riordan SM, Huettl P, Guduru Z, Stanford JA, van Horne CG, Gerhardt GA. RNA Sequencing of Human Peripheral Nerve in Response to Injury: Distinctive Analysis of the Nerve Repair Pathways. Cell Transplant 2021; 29:963689720926157. [PMID: 32425114 PMCID: PMC7563818 DOI: 10.1177/0963689720926157] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The development of regenerative therapies for central nervous system diseases can likely benefit from an understanding of the peripheral nervous system repair process, particularly in identifying potential gene pathways involved in human nerve repair. This study employed RNA sequencing (RNA-seq) technology to analyze the whole transcriptome profile of the human peripheral nerve in response to an injury. The distal sural nerve was exposed, completely transected, and a 1 to 2 cm section of nerve fascicles was collected for RNA-seq from six participants with Parkinson’s disease, ranging in age between 53 and 70 yr. Two weeks after the initial injury, another section of the nerve fascicles of the distal and pre-degenerated stump of the nerve was dissected and processed for RNA-seq studies. An initial analysis between the pre-lesion status and the postinjury gene expression revealed 3,641 genes that were significantly differentially expressed. In addition, the results support a clear transdifferentiation process that occurred by the end of the 2-wk postinjury. Gene ontology (GO) and hierarchical clustering were used to identify the major signaling pathways affected by the injury. In contrast to previous nonclinical studies, important changes were observed in molecular pathways related to antiapoptotic signaling, neurotrophic factor processes, cell motility, and immune cell chemotactic signaling. The results of our current study provide new insights regarding the essential interactions of different molecular pathways that drive neuronal repair and axonal regeneration in humans.
Collapse
Affiliation(s)
- Andrew S Welleford
- Department of Neuroscience, University of Kentucky Medical Center, Lexington, KY, USA.,Brain Restoration Center, University of Kentucky, Lexington, KY, USA.,* These are co-first authors and have contributed equally to this article
| | - Jorge E Quintero
- Department of Neuroscience, University of Kentucky Medical Center, Lexington, KY, USA.,Brain Restoration Center, University of Kentucky, Lexington, KY, USA.,Department of Neurosurgery, University of Kentucky Medical Center, Lexington, KY, USA.,* These are co-first authors and have contributed equally to this article
| | - Nader El Seblani
- Department of Neuroscience, University of Kentucky Medical Center, Lexington, KY, USA.,Brain Restoration Center, University of Kentucky, Lexington, KY, USA.,Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY, USA.,* These are co-first authors and have contributed equally to this article
| | - Eric Blalock
- Department of Neuroscience, University of Kentucky Medical Center, Lexington, KY, USA.,Brain Restoration Center, University of Kentucky, Lexington, KY, USA
| | - Sumedha Gunewardena
- Kansas Intellectual and Developmental Disabilities Research Center, University of Kansas Medical Center, KS, USA
| | - Steven M Shapiro
- Division of Neurology, Department of Pediatrics, Children's Mercy Hospital, Kansas City, MO, USA.,Department of Molecular and Integrative Physiology, University of Kansas Medical Center, KS, USA
| | - Sean M Riordan
- Division of Neurology, Department of Pediatrics, Children's Mercy Hospital, Kansas City, MO, USA
| | - Peter Huettl
- Department of Neuroscience, University of Kentucky Medical Center, Lexington, KY, USA.,Brain Restoration Center, University of Kentucky, Lexington, KY, USA
| | - Zain Guduru
- Department of Neurology, University of Kentucky Medical Center, Lexington, KY, USA
| | - John A Stanford
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, KS, USA
| | - Craig G van Horne
- Department of Neuroscience, University of Kentucky Medical Center, Lexington, KY, USA.,Brain Restoration Center, University of Kentucky, Lexington, KY, USA.,Department of Neurosurgery, University of Kentucky Medical Center, Lexington, KY, USA
| | - Greg A Gerhardt
- Department of Neuroscience, University of Kentucky Medical Center, Lexington, KY, USA.,Brain Restoration Center, University of Kentucky, Lexington, KY, USA.,Department of Neurosurgery, University of Kentucky Medical Center, Lexington, KY, USA.,Department of Neurology, University of Kentucky Medical Center, Lexington, KY, USA
| |
Collapse
|
43
|
Kohlmeyer JL, Kaemmer CA, Umesalma S, Gourronc FA, Klingelhutz AJ, Quelle DE. RABL6A Regulates Schwann Cell Senescence in an RB1-Dependent Manner. Int J Mol Sci 2021; 22:5367. [PMID: 34065204 PMCID: PMC8161079 DOI: 10.3390/ijms22105367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/14/2021] [Accepted: 05/18/2021] [Indexed: 12/17/2022] Open
Abstract
Schwann cells are normally quiescent, myelinating glia cells of the peripheral nervous system. Their aberrant proliferation and transformation underlie the development of benign tumors (neurofibromas) as well as deadly malignant peripheral nerve sheath tumors (MPNSTs). We discovered a new driver of MPNSTs, an oncogenic GTPase named RABL6A, that functions in part by inhibiting the RB1 tumor suppressor. RB1 is a key mediator of cellular senescence, a permanent withdrawal from the cell cycle that protects against cell immortalization and transformation. Based on the RABL6A-RB1 link in MPNSTs, we explored the hypothesis that RABL6A promotes Schwann cell proliferation and abrogates their senescence by inhibiting RB1. Using sequentially passaged normal human Schwann cells (NHSCs), we found that the induction of replicative senescence was associated with reduced expression of endogenous RABL6A. Silencing RABL6A in low passage NHSCs caused premature stress-induced senescence, which was largely rescued by co-depletion of RB1. Consistent with those findings, Rabl6-deficient MEFs displayed impaired proliferation and accelerated senescence compared to wildtype MEFs. These results demonstrate that RABL6A is required for maintenance of proper Schwann cell proliferation and imply that aberrantly high RABL6A expression may facilitate malignant transformation.
Collapse
Affiliation(s)
- Jordan L. Kohlmeyer
- The Department of Neuroscience and Pharmacology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.K.); (C.A.K.); (S.U.)
| | - Courtney A. Kaemmer
- The Department of Neuroscience and Pharmacology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.K.); (C.A.K.); (S.U.)
| | - Shaikamjad Umesalma
- The Department of Neuroscience and Pharmacology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.K.); (C.A.K.); (S.U.)
| | - Francoise A. Gourronc
- The Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (F.A.G.); (A.J.K.)
| | - Aloysius J. Klingelhutz
- The Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (F.A.G.); (A.J.K.)
| | - Dawn E. Quelle
- The Department of Neuroscience and Pharmacology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.K.); (C.A.K.); (S.U.)
- The Department of Pathology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| |
Collapse
|
44
|
Liu JA, Yu J, Cheung CW. Immune Actions on the Peripheral Nervous System in Pain. Int J Mol Sci 2021; 22:ijms22031448. [PMID: 33535595 PMCID: PMC7867183 DOI: 10.3390/ijms22031448] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 02/07/2023] Open
Abstract
Pain can be induced by tissue injuries, diseases and infections. The interactions between the peripheral nervous system (PNS) and immune system are primary actions in pain sensitizations. In response to stimuli, nociceptors release various mediators from their terminals that potently activate and recruit immune cells, whereas infiltrated immune cells further promote sensitization of nociceptors and the transition from acute to chronic pain by producing cytokines, chemokines, lipid mediators and growth factors. Immune cells not only play roles in pain production but also contribute to PNS repair and pain resolution by secreting anti-inflammatory or analgesic effectors. Here, we discuss the distinct roles of four major types of immune cells (monocyte/macrophage, neutrophil, mast cell, and T cell) acting on the PNS during pain process. Integration of this current knowledge will enhance our understanding of cellular changes and molecular mechanisms underlying pain pathogenies, providing insights for developing new therapeutic strategies.
Collapse
Affiliation(s)
- Jessica Aijia Liu
- Correspondence: (J.A.L.); (C.W.C.); Tel.: +852-2255-3303 (J.A.L. & C.W.C.); Fax: +852-2855-1654 (J.A.L. & C.W.C.)
| | | | - Chi Wai Cheung
- Correspondence: (J.A.L.); (C.W.C.); Tel.: +852-2255-3303 (J.A.L. & C.W.C.); Fax: +852-2855-1654 (J.A.L. & C.W.C.)
| |
Collapse
|
45
|
Peripheral Mechanisms of Neuropathic Pain-the Role of Neuronal and Non-Neuronal Interactions and Their Implications for Topical Treatment of Neuropathic Pain. Pharmaceuticals (Basel) 2021; 14:ph14020077. [PMID: 33498496 PMCID: PMC7909513 DOI: 10.3390/ph14020077] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/13/2021] [Accepted: 01/16/2021] [Indexed: 12/16/2022] Open
Abstract
Neuropathic pain in humans arises as a consequence of injury or disease of somatosensory nervous system at peripheral or central level. Peripheral neuropathic pain is more common than central neuropathic pain, and is supposed to result from peripheral mechanisms, following nerve injury. The animal models of neuropathic pain show extensive functional and structural changes occurring in neuronal and non-neuronal cells in response to peripheral nerve injury. These pathological changes following damage lead to peripheral sensitization development, and subsequently to central sensitization initiation with spinal and supraspinal mechanism involved. The aim of this narrative review paper is to discuss the mechanisms engaged in peripheral neuropathic pain generation and maintenance, with special focus on the role of glial, immune, and epithelial cells in peripheral nociception. Based on the preclinical and clinical studies, interactions between neuronal and non-neuronal cells have been described, pointing out at the molecular/cellular underlying mechanisms of neuropathic pain, which might be potentially targeted by topical treatments in clinical practice. The modulation of the complex neuro-immuno-cutaneous interactions in the periphery represents a strategy for the development of new topical analgesics and their utilization in clinical settings.
Collapse
|
46
|
O'Carroll SJ, Cook WH, Young D. AAV Targeting of Glial Cell Types in the Central and Peripheral Nervous System and Relevance to Human Gene Therapy. Front Mol Neurosci 2021; 13:618020. [PMID: 33505247 PMCID: PMC7829478 DOI: 10.3389/fnmol.2020.618020] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/11/2020] [Indexed: 12/12/2022] Open
Abstract
Different glial cell types are found throughout the central (CNS) and peripheral nervous system (PNS), where they have important functions. These cell types are also involved in nervous system pathology, playing roles in neurodegenerative disease and following trauma in the brain and spinal cord (astrocytes, microglia, oligodendrocytes), nerve degeneration and development of pain in peripheral nerves (Schwann cells, satellite cells), retinal diseases (Müller glia) and gut dysbiosis (enteric glia). These cell type have all been proposed as potential targets for treating these conditions. One approach to target these cell types is the use of gene therapy to modify gene expression. Adeno-associated virus (AAV) vectors have been shown to be safe and effective in targeting cells in the nervous system and have been used in a number of clinical trials. To date, a number of studies have tested the use of different AAV serotypes and cell-specific promoters to increase glial cell tropism and expression. However, true glial-cell specific targeting for a particular glial cell type remains elusive. This review provides an overview of research into developing glial specific gene therapy and discusses some of the issues that still need to be addressed to make glial cell gene therapy a clinical reality.
Collapse
Affiliation(s)
- Simon J O'Carroll
- Spinal Cord Injury Research Group, Department of Anatomy and Medical Imaging, School of Medical Sciences, University of Auckland, Auckland, New Zealand
| | - William H Cook
- Molecular Neurotherapeutics Group, Department of Pharmacology and Clinical Pharmacology, School of Medical Sciences, University of Auckland, Auckland, New Zealand
| | - Deborah Young
- Molecular Neurotherapeutics Group, Department of Pharmacology and Clinical Pharmacology, School of Medical Sciences, University of Auckland, Auckland, New Zealand
| |
Collapse
|
47
|
Boutary S, Echaniz-Laguna A, Adams D, Loisel-Duwattez J, Schumacher M, Massaad C, Massaad-Massade L. Treating PMP22 gene duplication-related Charcot-Marie-Tooth disease: the past, the present and the future. Transl Res 2021; 227:100-111. [PMID: 32693030 DOI: 10.1016/j.trsl.2020.07.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 07/02/2020] [Accepted: 07/15/2020] [Indexed: 12/30/2022]
Abstract
Charcot-Marie-Tooth (CMT) disease is the most frequent inherited neuropathy, affecting 1/1500 to 1/10000. CMT1A represents 60%-70% of all CMT and is caused by a duplication on chromosome 17p11.2 leading to an overexpression of the Peripheral Myelin Protein 22 (PMP22). PMP22 gene is under tight regulation and small changes in its expression influences myelination and affect motor and sensory functions. To date, CMT1A treatment is symptomatic and classic pharmacological options have been disappointing. Here, we review the past, present, and future treatment options for CMT1A, with a special emphasis on the highly promising potential of PMP22-targeted small interfering RNA and antisense oligonucleotides.
Collapse
Affiliation(s)
- Suzan Boutary
- U 1195, INSERM and Paris-Saclay University, Le Kremlin-Bicêtre, France
| | - Andoni Echaniz-Laguna
- U 1195, INSERM and Paris-Saclay University, Le Kremlin-Bicêtre, France; Neurology Department, AP-HP, Paris-Saclay Universityand French Referent Center for Familial Amyloid Polyneuropathy and Other Rare Peripheral Neuropathies (CRMR-NNERF), Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - David Adams
- U 1195, INSERM and Paris-Saclay University, Le Kremlin-Bicêtre, France; Neurology Department, AP-HP, Paris-Saclay Universityand French Referent Center for Familial Amyloid Polyneuropathy and Other Rare Peripheral Neuropathies (CRMR-NNERF), Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Julien Loisel-Duwattez
- U 1195, INSERM and Paris-Saclay University, Le Kremlin-Bicêtre, France; Neurology Department, AP-HP, Paris-Saclay Universityand French Referent Center for Familial Amyloid Polyneuropathy and Other Rare Peripheral Neuropathies (CRMR-NNERF), Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | | | - Charbel Massaad
- Faculty of Basic and Biomedical Sciences, Paris Descartes University, INSERM UMRS 1124, Paris, France
| | | |
Collapse
|
48
|
Campbell-Thompson M, Tang SC. Pancreas Optical Clearing and 3-D Microscopy in Health and Diabetes. Front Endocrinol (Lausanne) 2021; 12:644826. [PMID: 33981285 PMCID: PMC8108133 DOI: 10.3389/fendo.2021.644826] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 04/08/2021] [Indexed: 12/13/2022] Open
Abstract
Although first described over a hundred years ago, tissue optical clearing is undergoing renewed interest due to numerous advances in optical clearing methods, microscopy systems, and three-dimensional (3-D) image analysis programs. These advances are advantageous for intact mouse tissues or pieces of human tissues because samples sized several millimeters can be studied. Optical clearing methods are particularly useful for studies of the neuroanatomy of the central and peripheral nervous systems and tissue vasculature or lymphatic system. Using examples from solvent- and aqueous-based optical clearing methods, the mouse and human pancreatic structures and networks will be reviewed in 3-D for neuro-insular complexes, parasympathetic ganglia, and adipocyte infiltration as well as lymphatics in diabetes. Optical clearing with multiplex immunofluorescence microscopy provides new opportunities to examine the role of the nervous and circulatory systems in pancreatic and islet functions by defining their neurovascular anatomy in health and diabetes.
Collapse
Affiliation(s)
- Martha Campbell-Thompson
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, United States
- *Correspondence: Martha Campbell-Thompson, ; Shiue-Cheng Tang,
| | - Shiue-Cheng Tang
- Department of Medical Science and Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
- *Correspondence: Martha Campbell-Thompson, ; Shiue-Cheng Tang,
| |
Collapse
|
49
|
Electron Microscopy Analysis of Sciatic Nerve Fibers in C57BL/6 Transgenic Mice. NEUROPHYSIOLOGY+ 2020. [DOI: 10.1007/s11062-020-09857-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
50
|
Gu XK, Li XR, Lu ML, Xu H. Lithium promotes proliferation and suppresses migration of Schwann cells. Neural Regen Res 2020; 15:1955-1961. [PMID: 32246645 PMCID: PMC7513976 DOI: 10.4103/1673-5374.280324] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/05/2019] [Accepted: 12/17/2019] [Indexed: 12/12/2022] Open
Abstract
Schwann cell proliferation, migration and remyelination of regenerating axons contribute to regeneration after peripheral nervous system injury. Lithium promotes remyelination by Schwann cells and improves peripheral nerve regeneration. However, whether lithium modulates other phenotypes of Schwann cells, especially their proliferation and migration remains elusive. In the current study, primary Schwann cells from rat sciatic nerve stumps were cultured and exposed to 0, 5, 10, 15, or 30 mM lithium chloride (LiCl) for 24 hours. The effects of LiCl on Schwann cell proliferation and migration were examined using the Cell Counting Kit-8, 5-ethynyl-2'-deoxyuridine, Transwell and wound healing assays. Cell Counting Kit-8 and 5-ethynyl-2'-deoxyuridine assays showed that 5, 10, 15, and 30 mM LiCl significantly increased the viability and proliferation rate of Schwann cells. Transwell-based migration assays and wound healing assays showed that 10, 15, and 30 mM LiCl suppressed the migratory ability of Schwann cells. Furthermore, the effects of LiCl on the proliferation and migration phenotypes of Schwann cells were mostly dose-dependent. These data indicate that lithium treatment significantly promotes the proliferation and inhibits the migratory ability of Schwann cells. This conclusion will inform strategies to promote the repair and regeneration of peripheral nerves. All of the animal experiments in this study were ethically approved by the Administration Committee of Experimental Animal Center of Nantong University, China (approval No. 20170320-017) on March 2, 2017.
Collapse
Affiliation(s)
- Xiao-Kun Gu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
- Department of Hand Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, China
| | - Xin-Rui Li
- State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Mei-Ling Lu
- State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Hui Xu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| |
Collapse
|