1
|
Oliveira KB, de Souza FMA, de Sá LBM, Pacheco ALD, Prado MR, de Sousa Rodrigues CF, Bassi ÊJ, Santana-Melo I, Silva-Júnior A, Sabino-Silva R, Shetty AK, de Castro OW. Potential Mechanisms Underlying COVID-19-Mediated Central and Peripheral Demyelination: Roles of the RAAS and ADAM-17. Mol Neurobiol 2024:10.1007/s12035-024-04329-8. [PMID: 38965171 DOI: 10.1007/s12035-024-04329-8] [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: 12/13/2023] [Accepted: 06/21/2024] [Indexed: 07/06/2024]
Abstract
Demyelination is among the most conspicuous neurological sequelae of SARS-CoV-2 infection (COVID-19) in both the central (CNS) and peripheral (PNS) nervous systems. Several hypotheses have been proposed to explain the mechanisms underlying demyelination in COVID-19. However, none have considered the SARS-CoV-2's effects on the renin-angiotensin-aldosterone system (RAAS). Therefore, our objective in this review is to evaluate how RAAS imbalance, caused by direct and indirect effects of SARS-CoV-2 infection, could contribute to myelin loss in the PNS and CNS. In the PNS, we propose that demyelination transpires from two significant changes induced by SARS-CoV-2 infection, which include upregulation of ADAM-17 and induction of lymphopenia. Whereas, in the CNS, demyelination could result from RAAS imbalance triggering two alterations: (1) a decrease in angiotensin type II receptor (AT2R) activity, responsible for restraining defense cells' action on myelin; (2) upregulation of ADAM-17 activity, leading to impaired maturation of oligodendrocytes and myelin formation. Thus, we hypothesize that increased ADAM-17 activity and decreased AT2R activity play roles in SARS-CoV-2 infection-mediated demyelination in the CNS.
Collapse
Affiliation(s)
- Kellysson Bruno Oliveira
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Fernanda Maria Araujo de Souza
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Letícia Barros Maurício de Sá
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Amanda Larissa Dias Pacheco
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Mariana Reis Prado
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Célio Fernando de Sousa Rodrigues
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Ênio José Bassi
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Igor Santana-Melo
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Abelardo Silva-Júnior
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil
| | - Robinson Sabino-Silva
- Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | - Ashok K Shetty
- Institute for Regenerative Medicine, Department of Cell Biology and Genetics, Texas A&M University School of Medicine, College Station, TX, USA.
- Institute for Regenerative Medicine, Department of Molecular and Cellular Medicine, Texas A&M Health Science Center College of Medicine, College Station, TX, 77843, USA.
| | - Olagide Wagner de Castro
- Institute of Biological Sciences and Health, Federal University of Alagoas (UFAL), Av. Lourival de Melo Mota, Km 14, Campus A. C. Simões, Cidade Universitária, Maceió, AL, CEP, 57072-970, Brazil.
| |
Collapse
|
2
|
Aragão HHR, Lima LBR, Cavalcante IL, da Silva Neto SS, Turatti E, Cavalcante RB, Gilligan G, Panico R, de Mendonça EF, de Albuquerque-Júnior RLC, Nonaka CFW, Alves PM, de Andrade BAB, Cunha JLS. Oral granular cell tumor: a collaborative clinicopathological study of 61 cases. Oral Maxillofac Surg 2024:10.1007/s10006-024-01272-9. [PMID: 38904898 DOI: 10.1007/s10006-024-01272-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 06/17/2024] [Indexed: 06/22/2024]
Abstract
BACKGROUND Granular Cell Tumor (GCT) is an uncommon benign lesion in the oral cavity whose pathogenesis remains poorly understood. Due to their infrequent occurrence and similarity to other oral lesions, they are often forgotten during the initial clinical diagnosis. Therefore, understanding its prevalence, clinical and pathological characteristics is crucial for an accurate diagnosis and adequate management. METHODS All cases diagnosed as GCTs in six Brazilian and Argentinian oral diagnostic centers were re-evaluated by HE staining, and clinical, demographic, and histopathological data were collected and evaluated. RESULTS The series comprised 45 female (73.8%) and 16 male (26.2%), with a 2.8:1 female-to-male ratio and a mean age of 35.3 ± 16.9 years (range: 7-77 years). Most cases occurred on the tongue (n = 49; 81.6%) and presented clinically as asymptomatic papules or nodules (n = 50; 89.3%) with a normochromic (n = 25; 45.5%) or yellowish (n = 11; 20.0%) coloration and sizes ranging from 0.2 to 3.0 cm (mean ± SD: 1.40 ± 0.75 cm). Morphologically, most tumors were characterized by a poorly delimited proliferation (n = 52; 88.1%) of cells typically rounded to polygonal containing abundant, eosinophilic, finely granular cytoplasm. Pustulo-ovoid bodies of Milian were identified in all lesions (n = 61; 100%). Entrapment of skeletal striated muscle (n = 44; 72.1%) and nerve fibers (n = 42; 68.9%) were common findings. Pseudoepitheliomatous hyperplasia (PEH) was observed in 23 cases (39.0%). In only 27.7% of cases (n = 13) there was agreement between the clinical and histopathological diagnosis. Outcome information was available from 16 patients (26.2%), with clinical follow-up ranging from 4 to 36 months (mean 13.3 months), and none developed local recurrence. CONCLUSIONS The clinical and histopathological features of GCTs were consistent with those described in previous studies. In general, these lesions have a predilection for the lateral region of the tongue in adult women. It is essential to consider GCTs in the differential diagnosis of yellow or normochromic papules and nodules in the oral cavity. Histopathological evaluation is essential for the definitive diagnosis and the prognosis is excellent.
Collapse
Affiliation(s)
| | - Luana Beatriz Ribeiro Lima
- Department of Dentistry, Graduate Program in Dental Sciences, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
- School of Dentistry, University of Fortaleza (UNIFOR), Fortaleza, CE, Brazil
| | - Israel Leal Cavalcante
- School of Dentistry, University of Fortaleza (UNIFOR), Fortaleza, CE, Brazil
- Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | | | - Eveline Turatti
- School of Dentistry, University of Fortaleza (UNIFOR), Fortaleza, CE, Brazil
| | | | - Gerardo Gilligan
- Department of Oral Medicine, Facultad de Odontología, Universidad Nacional de Córdoba (UNC), Córdoba, Argentina
| | - Rene Panico
- Department of Oral Medicine, Facultad de Odontología, Universidad Nacional de Córdoba (UNC), Córdoba, Argentina
| | | | | | | | | | | | - John Lennon Silva Cunha
- Department of Dentistry, State University of Paraíba (UEPB), Campina Grande, Brazil.
- Department of Biological and Health Sciences, Federal University of Western Bahia (UFOB), Rua da Prainha, 1326 - Bairro Morada Nobre, Barreiras, BA, 47810-047, Brazil.
| |
Collapse
|
3
|
Nickl V, Ziebolz D, Rumpel C, Klein D, Nickl R, Rampeltshammer E, Monoranu CM, Ernestus RI, Matthies C, Löhr M, Hagemann C, Breun M. Analysis of tumor microenvironment composition in vestibular schwannomas: insights into NF2-associated and sporadic variations and their clinical correlations. Front Oncol 2024; 14:1340184. [PMID: 38817895 PMCID: PMC11137168 DOI: 10.3389/fonc.2024.1340184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 04/09/2024] [Indexed: 06/01/2024] Open
Abstract
Objective Vestibular schwannomas (VS), benign tumors stemming from the eighth cranial nerve's Schwann cells, are associated with Merlin gene mutations, inflammation, and the tumor microenvironment (TME), influencing tumor initiation, maintenance, and potential neural dysfunction. Understanding TME composition holds promise for systemic therapeutic interventions, particularly for NF2-related schwannomatosis. Methodology A retrospective analysis of paraffin-embedded tissue from 40 patients (2013-2020), evenly divided by neurofibromatosis type 2 status, with further stratification based on magnetic resonance imaging (MRI) progression and hearing function. Immunohistochemistry assessed TME components, including T-cell markers (CD4, CD8, CD25), NK cells (CD7), and macrophages (CD14, CD68, CD163, CCR2). Fiji software facilitated image analysis. Results T-cell markers (CD4, CD8, CD7) exhibited low expression in VS, with no significant NF2-associated vs. sporadic distinctions. Macrophage-related markers (CD14, CD68, CD163, CCR2) showed significantly higher expression (CD14: p = 0.0187, CD68: p < 0.0001, CD163: p = 0.0006, CCR2: p < 0.0001). CCR2 and CD163 significantly differed between NF2-associated and sporadic VS. iNOS, an M1-macrophage marker, was downregulated. CD25, a regulatory T-cell marker, correlated significantly with tumor growth dynamics (p = 0.016). Discussion Immune cells, notably monocytes and macrophages, crucially contribute to VS pathogenesis in both NF2-associated and sporadic cases. Significant differences in CCR2 and CD163 expression suggest distinct immune responses. Regulatory T-cells may serve as growth dynamic markers. These findings highlight immune cells as potential biomarkers and therapeutic targets for managing VS.
Collapse
Affiliation(s)
- Vera Nickl
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - David Ziebolz
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Charlotte Rumpel
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Dennis Klein
- Department of Neurology, Developmental Neurobiology, University Hospital Würzburg, Würzburg, Germany
| | - Robert Nickl
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Eva Rampeltshammer
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Camelia M. Monoranu
- Institute of Pathology, Department of Neuropathology, University Würzburg, Würzburg, Germany
| | - Ralf-Ingo Ernestus
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Cordula Matthies
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Mario Löhr
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Carsten Hagemann
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Maria Breun
- Department of Neurosurgery, Section Experimental Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| |
Collapse
|
4
|
Xiao B, Feturi F, Su AJA, Van der Merwe Y, Barnett JM, Jabbari K, Khatter NJ, Li B, Katzel EB, Venkataramanan R, Solari MG, Wagner WR, Steketee MB, Simons DJ, Washington KM. Nerve Wrap for Local Delivery of FK506/Tacrolimus Accelerates Nerve Regeneration. Int J Mol Sci 2024; 25:847. [PMID: 38255920 PMCID: PMC10815243 DOI: 10.3390/ijms25020847] [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: 12/14/2023] [Revised: 01/03/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Peripheral nerve injuries (PNIs) occur frequently and can lead to devastating and permanent sensory and motor function disabilities. Systemic tacrolimus (FK506) administration has been shown to hasten recovery and improve functional outcomes after PNI repair. Unfortunately, high systemic levels of FK506 can result in adverse side effects. The localized administration of FK506 could provide the neuroregenerative benefits of FK506 while avoiding systemic, off-target side effects. This study investigates the utility of a novel FK506-impregnated polyester urethane urea (PEUU) nerve wrap to treat PNI in a previously validated rat infraorbital nerve (ION) transection and repair model. ION function was assessed by microelectrode recordings of trigeminal ganglion cells responding to controlled vibrissae deflections in ION-transected and -repaired animals, with and without the nerve wrap. Peristimulus time histograms (PSTHs) having 1 ms bins were constructed from spike times of individual single units. Responses to stimulus onsets (ON responses) were calculated during a 20 ms period beginning 1 ms after deflection onset; this epoch captures the initial, transient phase of the whisker-evoked response. Compared to no-wrap controls, rats with PEUU-FK506 wraps functionally recovered earlier, displaying larger response magnitudes. With nerve wrap treatment, FK506 blood levels up to six weeks were measured nearly at the limit of quantification (LOQ ≥ 2.0 ng/mL); whereas the drug concentrations within the ION and muscle were much higher, demonstrating the local delivery of FK506 to treat PNI. An immunohistological assessment of ION showed increased myelin expression for animals assigned to neurorrhaphy with PEUU-FK506 treatment compared to untreated or systemic-FK506-treated animals, suggesting that improved PNI outcomes using PEUU-FK506 is mediated by the modulation of Schwann cell activity.
Collapse
Affiliation(s)
- Bo Xiao
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Veterans Administration Healthcare System, Pittsburgh, PA 15213, USA; (B.X.); (F.F.)
| | - Firuz Feturi
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Veterans Administration Healthcare System, Pittsburgh, PA 15213, USA; (B.X.); (F.F.)
| | - An-Jey A. Su
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Veterans Administration Healthcare System, Pittsburgh, PA 15213, USA; (B.X.); (F.F.)
- Department of Surgery, Division of Plastic Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | | | - Joshua M. Barnett
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Veterans Administration Healthcare System, Pittsburgh, PA 15213, USA; (B.X.); (F.F.)
| | - Kayvon Jabbari
- Department of Surgery, Division of Plastic Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Neil J. Khatter
- Department of Surgery, Division of Plastic Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Bing Li
- Department of Surgery, Division of Plastic Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Evan B. Katzel
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Veterans Administration Healthcare System, Pittsburgh, PA 15213, USA; (B.X.); (F.F.)
| | | | - Mario G. Solari
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Veterans Administration Healthcare System, Pittsburgh, PA 15213, USA; (B.X.); (F.F.)
| | - William R. Wagner
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA; (W.R.W.); (D.J.S.)
| | - Michael B. Steketee
- Department of Ophthalmology, University of California, San Diego, CA 90095, USA
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA; (W.R.W.); (D.J.S.)
| | - Daniel J. Simons
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA; (W.R.W.); (D.J.S.)
| | - Kia M. Washington
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Veterans Administration Healthcare System, Pittsburgh, PA 15213, USA; (B.X.); (F.F.)
- Department of Surgery, Division of Plastic Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA; (W.R.W.); (D.J.S.)
| |
Collapse
|
5
|
Daboussi L, Costaguta G, Gullo M, Jasinski N, Pessino V, O'Leary B, Lettieri K, Driscoll S, Pfaff SL. Mitf is a Schwann cell sensor of axonal integrity that drives nerve repair. Cell Rep 2023; 42:113282. [PMID: 38007688 PMCID: PMC11034927 DOI: 10.1016/j.celrep.2023.113282] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 08/04/2023] [Accepted: 09/28/2023] [Indexed: 11/27/2023] Open
Abstract
Schwann cells respond to acute axon damage by transiently transdifferentiating into specialized repair cells that restore sensorimotor function. However, the molecular systems controlling repair cell formation and function are not well defined, and consequently, it is unclear whether this form of cellular plasticity has a role in peripheral neuropathies. Here, we identify Mitf as a transcriptional sensor of axon damage under the control of Nrg-ErbB-PI3K-PI5K-mTorc2 signaling. Mitf regulates a core transcriptional program for generating functional repair Schwann cells following injury and during peripheral neuropathies caused by CMT4J and CMT4D. In the absence of Mitf, core genes for epithelial-to-mesenchymal transition, metabolism, and dedifferentiation are misexpressed, and nerve repair is disrupted. Our findings demonstrate that Schwann cells monitor axonal health using a phosphoinositide signaling system that controls Mitf nuclear localization, which is critical for activating cellular plasticity and counteracting neural disease.
Collapse
Affiliation(s)
- Lydia Daboussi
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA; Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Giancarlo Costaguta
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA; Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Miriam Gullo
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA
| | - Nicole Jasinski
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA
| | - Veronica Pessino
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA
| | - Brendan O'Leary
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA
| | - Karen Lettieri
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA
| | - Shawn Driscoll
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA
| | - Samuel L Pfaff
- Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA 92037, USA.
| |
Collapse
|
6
|
Dahlin LB. The Dynamics of Nerve Degeneration and Regeneration in a Healthy Milieu and in Diabetes. Int J Mol Sci 2023; 24:15241. [PMID: 37894921 PMCID: PMC10607341 DOI: 10.3390/ijms242015241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Appropriate animal models, mimicking conditions of both health and disease, are needed to understand not only the biology and the physiology of neurons and other cells under normal conditions but also under stress conditions, like nerve injuries and neuropathy. In such conditions, understanding how genes and different factors are activated through the well-orchestrated programs in neurons and other related cells is crucial. Knowledge about key players associated with nerve regeneration intended for axonal outgrowth, migration of Schwann cells with respect to suitable substrates, invasion of macrophages, appropriate conditioning of extracellular matrix, activation of fibroblasts, formation of endothelial cells and blood vessels, and activation of other players in healthy and diabetic conditions is relevant. Appropriate physical and chemical attractions and repulsions are needed for an optimal and directed regeneration and are investigated in various nerve injury and repair/reconstruction models using healthy and diabetic rat models with relevant blood glucose levels. Understanding dynamic processes constantly occurring in neuropathies, like diabetic neuropathy, with concomitant degeneration and regeneration, requires advanced technology and bioinformatics for an integrated view of the behavior of different cell types based on genomics, transcriptomics, proteomics, and imaging at different visualization levels. Single-cell-transcriptional profile analysis of different cells may reveal any heterogeneity among key players in peripheral nerves in health and disease.
Collapse
Affiliation(s)
- Lars B. Dahlin
- Department of Translational Medicine—Hand Surgery, Lund University, SE-205 02 Malmö, Sweden; ; Tel.: +46-40-33-17-24
- Department of Hand Surgery, Skåne University Hospital, SE-205 02 Malmö, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, SE-581 83 Linköping, Sweden
| |
Collapse
|
7
|
Zhang J, Mei Z, Yao W, Zhao C, Wu S, Ouyang J. SIX1 induced HULC modulates neuropathic pain and Schwann cell oxidative stress after sciatic nerve injury. Gene 2023; 882:147655. [PMID: 37479098 DOI: 10.1016/j.gene.2023.147655] [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: 05/04/2023] [Revised: 07/02/2023] [Accepted: 07/18/2023] [Indexed: 07/23/2023]
Abstract
Neuropathic pain is a severe and debilitating condition caused by damage to the peripheral nerve or central nervous system. Although several mechanisms have been identified, the underlying pathophysiology of neuropathic pain is still not fully understood. Unfortunately, few effective therapies are available for this condition. Therefore, there is an urgent need to investigate the underlying mechanisms of neuropathic pain to develop more effective treatments. Long non-coding RNAs (lncRNAs) have recently gained attention due to their potential to modulate protein expression through various mechanisms. LncRNAs have been implicated in many diseases, including neuropathic pain. This study aimed to identify a novel lncRNA involved in neuropathic pain progression. The lncRNA microarray analysis showed that lncRNA Upregulated in Liver Cancer (HULC) was significantly upregulated in spinal cord tissue of sciatic nerve injury (SNI) rats. Further experiments confirmed that HULC promoted neuropathic pain progression and aggravated H2O2-induced Schwann cell injury. Mechanistically, Sine Oculis Homeobox 1 (SIX1) regulated the transcriptional expression of HULC, and both SIX1 and HULC were involved in neuropathic pain and Schwann cell injury. The results of our research indicate the existence of a previously unknown SIX1/HULC axis that plays a significant role in the development and progression of neuropathic pain, shedding light on the complex mechanisms that underlie this debilitating condition. These findings offer novel insights into the molecular pathways involved in neuropathic pain. This study underscores the potential of targeting lncRNAs as a viable approach to alleviate the suffering of patients with neuropathic pain.
Collapse
Affiliation(s)
- Jinyuan Zhang
- Department of Anatomy, Southern Medical University, Guangdong Provincial Key Laboratory of Medical Biomechanics, Guangzhou, China; The Second Department of Orthopedics Surgery (Department of Spinal Surgery), Zhongshan People's Hospital, Zhongshan, China.
| | - Zhi Mei
- The Second Department of Orthopedics Surgery (Department of Spinal Surgery), Zhongshan People's Hospital, Zhongshan, China
| | - Wanxiang Yao
- The Second Department of Orthopedics Surgery (Department of Spinal Surgery), Zhongshan People's Hospital, Zhongshan, China
| | - Chenyi Zhao
- The Second Department of Orthopedics Surgery (Department of Spinal Surgery), Zhongshan People's Hospital, Zhongshan, China
| | - Shutong Wu
- Department of Anatomy, Southern Medical University, Guangdong Provincial Key Laboratory of Medical Biomechanics, Guangzhou, China
| | - Jun Ouyang
- Department of Anatomy, Southern Medical University, Guangdong Provincial Key Laboratory of Medical Biomechanics, Guangzhou, China.
| |
Collapse
|
8
|
Kim JM, Choi JS, Jung J, Yeo SG, Kim SH. Inhibitory effect of parthenolide on peripheral nerve degeneration. Anat Sci Int 2023; 98:529-539. [PMID: 37024641 DOI: 10.1007/s12565-023-00718-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/15/2023] [Indexed: 04/08/2023]
Abstract
Traumatic axonal damage disrupts connections between neurons, leading to the loss of motor and sensory functions. Although damaged peripheral nerves can regenerate, recovery depends on the variety and severity of nerve damage. Thus, many phytochemicals have been studied for their ability to reduce peripheral nerve degeneration, and among them, Parthenolide (PTL), which is extracted from Feverfew has effects against production of free radicals, inflammation, and apoptosis. Thus, we conducted a study to investigate whether PTL has an inhibitory effect on peripheral nerve degeneration during peripheral nerve damage. To verify the effect of PTL on peripheral nerve degeneration process, a morphological comparison of peripheral nerves with and without PTL was performed. PTL significantly reduced the quantity of fragmented ovoid formations at 3DIV (days in vitro). Immunostaining for MBP revealed that the ratio of intact myelin sheaths increased significantly in sciatic nerve with PTL compared with absence of PTL at 3DIV. Furthermore, nerve fibers in the presence of PTL maintained the continuity of Neurofilament (NF) compared to those without at 3DIV. Immunostaining for LAMP1 and p75 NTR showed that the expression of LAMP1 and p75 NTR decreased in the nerve after PTL addition at 3DIV. Lastly, immunostaining for anti-Ki67 revealed that PTL inhibited Ki67 expression at 3DIV compared to without PTL. These results confirm that PTL inhibits peripheral nerve degenerative processes. PTL may be a good applicant to inhibit peripheral nerve degeneration. Our study examined the effect of Parthenolide in preventing degeneration of peripheral nerves by inhibiting the breakdown of peripheral axons and myelin, also inhibiting Schwann cell trans-dedifferentiation and proliferation.
Collapse
Affiliation(s)
- Jung Min Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, Kyung Hee University School of Medicine, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Jae Sun Choi
- Clinical Research Institute, Kyung Hee Medical Center, Seou, 02447, Korea
| | - Junyang Jung
- Department of Anatomy and Neurobiology, College of Medicines, Kyung Hee University, Seoul, 02447, Korea
| | - Seung Geun Yeo
- Department of Otorhinolaryngology, Head and Neck Surgery, Kyung Hee University School of Medicine, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Sang Hoon Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, Kyung Hee University School of Medicine, Kyung Hee University Medical Center, Seoul, 02447, Korea.
- Department of Otohinolaryngology - H & N Surgery, School of Medicine, KyungHee University, #1 Hoegi-Dong, Dongdaemun-Gu, Seoul, 130-702, Korea.
| |
Collapse
|
9
|
Liang F, Yang Y, Chen Y, Xie J, Liu S, Tan Z, Tian L, Yu Z, Shi Z, Xie P, Ding H, Yang Q. Ropivacaine microsphere-loaded electroconductive nerve dressings for long-acting analgesia and functional recovery following diabetic peripheral nerve injury. Mater Today Bio 2023; 21:100712. [PMID: 37448664 PMCID: PMC10336588 DOI: 10.1016/j.mtbio.2023.100712] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
In recent years, electroconductive hydrogels (ECHs) have shown great potential in promoting nerve regeneration and motor function recovery following diabetic peripheral nerve injury (PNI), attributed to their similar electrical and mechanical characteristics to innate nervous tissue. It is well-established that PNI causes motor deficits and pain, especially in diabetics. Current evidence suggests that ropivacaine (ROP) encapsulated in poly lactic-co-glycolic acid (PLGA) microspheres (MSs) yield a sustained analgesic effect. In this study, an ECH electroconductive network loaded with MS/ROP (ECH-MS/ROP) was designed as a promising therapeutic approach for diabetic PNI to exert lasting analgesia and functional recovery. This dual delivery system allowed ROP's slow and sequential release, achieving sustained analgesia as demonstrated by our in vivo experiments. Meanwhile, this system was designed like a lamellar dressing, with desirable adhesive and self-curling properties, convenient for treating injured nerve tissues via automatically wrapping tube-like structures, facilitating the process of implantation. Our in vitro assays verified that ECH-MS/ROP was able to enhance the adhesion and motility of Schwann cells. Besides, both in vitro and in vivo studies substantiated that ECH-MS/ROP stimulated myelinated axon regeneration through the MEK/ERK signaling pathway, thereby improving muscular denervation atrophy and facilitating functional recovery. Therefore, this study suggests that the ECH-MS/ROP dressing provides a promising strategy for treating diabetic PNI to facilitate nerve regeneration, functional recovery and pain relief.
Collapse
Affiliation(s)
- Fangguo Liang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| | - Yusheng Yang
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| | - Yuyong Chen
- Department of Orthopedics, Southern University of Science and Technology Hospital, Shenzhen, Guangdong Province, 510800, China
| | - Jiajun Xie
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| | - Shencai Liu
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| | - Zilin Tan
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| | - Liangjie Tian
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| | - Zhiqiang Yu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Zhanjun Shi
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| | - Peigen Xie
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen, University, Guangzhou, Guangdong Province, 510600, China
| | - Hong Ding
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| | - Qinfeng Yang
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
| |
Collapse
|
10
|
Yang Q, Su S, Liu S, Yang S, Xu J, Zhong Y, Yang Y, Tian L, Tan Z, Wang J, Yu Z, Shi Z, Liang F. Exosomes-loaded electroconductive nerve dressing for nerve regeneration and pain relief against diabetic peripheral nerve injury. Bioact Mater 2023; 26:194-215. [PMID: 36923267 PMCID: PMC10008840 DOI: 10.1016/j.bioactmat.2023.02.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/10/2023] [Accepted: 02/21/2023] [Indexed: 03/06/2023] Open
Abstract
Over the years, electroconductive hydrogels (ECHs) have been extensively applied for stimulating nerve regeneration and restoring locomotor function after peripheral nerve injury (PNI) with diabetes, given their favorable mechanical and electrical properties identical to endogenous nerve tissue. Nevertheless, PNI causes the loss of locomotor function and inflammatory pain, especially in diabetic patients. It has been established that bone marrow stem cells-derived exosomes (BMSCs-Exos) have analgesic, anti-inflammatory and tissue regeneration properties. Herein, we designed an ECH loaded with BMSCs-Exos (ECH-Exos) electroconductive nerve dressing to treat diabetic PNI to achieve functional recovery and pain relief. Given its potent adhesive and self-healing properties, this laminar dressing is convenient for the treatment of damaged nerve fibers by automatically wrapping around them to form a size-matched tube-like structure, avoiding the cumbersome implantation process. Our in vitro studies showed that ECH-Exos could facilitate the attachment and migration of Schwann cells. Meanwhile, Exos in this system could modulate M2 macrophage polarization via the NF-κB pathway, thereby attenuating inflammatory pain in diabetic PNI. Additionally, ECH-Exos enhanced myelinated axonal regeneration via the MEK/ERK pathway in vitro and in vivo, consequently ameliorating muscle denervation atrophy and further promoting functional restoration. Our findings suggest that the ECH-Exos system has huge prospects for nerve regeneration, functional restoration and pain relief in patients with diabetic PNI.
Collapse
Affiliation(s)
- Qinfeng Yang
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Shenghui Su
- Department of Orthopaedics, Ningde Municipal Hospital of Ningde Normal University, Ningde, Fujian, 352100, China
| | - Shencai Liu
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Sheng Yang
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Jing Xu
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Yixiu Zhong
- Department of Dermatology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, Guangdong, 518020, China
| | - Yusheng Yang
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Liangjie Tian
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Zilin Tan
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Jian Wang
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Zhiqiang Yu
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, 510515, China
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, 510515, China
- Corresponding author. Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, 510515, China.
| | - Zhanjun Shi
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
- Corresponding author.
| | - Fangguo Liang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
- Corresponding author.
| |
Collapse
|
11
|
Zhang H, Zhang Z, Lin H. Research progress on the reduced neural repair ability of aging Schwann cells. Front Cell Neurosci 2023; 17:1228282. [PMID: 37545880 PMCID: PMC10398339 DOI: 10.3389/fncel.2023.1228282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/06/2023] [Indexed: 08/08/2023] Open
Abstract
Peripheral nerve injury (PNI) is associated with delayed repair of the injured nerves in elderly patients, resulting in loss of nerve function, chronic pain, muscle atrophy, and permanent disability. Therefore, the mechanism underlying the delayed repair of peripheral nerves in aging patients should be investigated. Schwann cells (SCs) play a crucial role in repairing PNI and regulating various nerve-repair genes after injury. SCs also promote peripheral nerve repair through various modalities, including mediating nerve demyelination, secreting neurotrophic factors, establishing Büngner bands, clearing axon and myelin debris, and promoting axon remyelination. However, aged SCs undergo structural and functional changes, leading to demyelination and dedifferentiation disorders, decreased secretion of neurotrophic factors, impaired clearance of axonal and myelin debris, and reduced capacity for axon remyelination. As a result, aged SCs may result in delayed repair of nerves after injury. This review article aimed to examine the mechanism underlying the diminished neural repair ability of aging SCs.
Collapse
|
12
|
Chi S, Li S, Cao G, Guo J, Han Y, Zhou Y, Zhang X, Li Y, Luo Z, Li X, Rong L, Zhang M, Li L, Tang S. The interplay of common genetic variants NRG1 rs2439302 and RET rs2435357 increases the risk of developing Hirschsprung's disease. Front Cell Dev Biol 2023; 11:1184799. [PMID: 37484916 PMCID: PMC10361661 DOI: 10.3389/fcell.2023.1184799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 06/14/2023] [Indexed: 07/25/2023] Open
Abstract
Introduction: As a congenital and genetically related disease, many single nucleotide polymorphisms (SNPs) have been reported to be associated with the risk of HSCR. Our previous research showed that SNP rs2439302 (NRG1) interacted with rs2435357 (RET) to increase the risk of HSCR development. However, the underlying molecular mechanism is still not well understood. Methods: SNP rs2439302 (NRG1) and rs2435357 (RET) were genotyped in 470 HSCR cases. The expression of NRG1 and RET was investigated in the colon of HSCR patients. Knockdown of the NRG1 and RET homologs was performed in zebrafish to investigate their synergistic effect on ENS development. The effect of SNP rs2439302 and rs2435357 polymorphism on neuron proliferation, migration, and differentiation were investigated in SHSY-5Y cells and IPSCs. Results: Significant downregulation of NRG1 and RET expression was noticed in the aganglionic segment of HSCR patients and SHSY-5Y cells with rs2439302 GG/rs2435357 TT genotype. NRG1 and RET double mutants caused the most severe reduction in enteric neuron numbers than NRG1 single mutant or RET single mutant in the hindgut of zebrafish. SHSY-5Y cells and IPSCs with rs2439302 GG/rs2435357 TT genotype exhibited a decreased proliferative, migration, and differentiative capacity. CTCF showed a considerably higher binding ability to SNP rs2439302 CC than GG. NRG1 reduction caused a further decrease in SOX10 expression via the PI3K/Akt pathway, which regulates RET expression by directly binding to rs2435357. Discussion: SNP rs2439302 (NRG1) GG increases the risk of developing HSCR by affecting the binding of transcription factor CTCF and interacting with rs2435357 (RET) to regulate RET expression via the PI3K/Akt/SOX10 pathway.
Collapse
Affiliation(s)
- Shuiqing Chi
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuai Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guoqing Cao
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jialing Guo
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yunqiao Han
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Yun Zhou
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xi Zhang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yibo Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhibin Luo
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangyang Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liying Rong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mengxin Zhang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Linglu Li
- China Zebrafish Resource Center, National Aquatic Biological Resource Center, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Shaotao Tang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
13
|
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
|
14
|
Abd Razak NH, Zainey AS, Idris J, Daud MF. The Fundamentals of Schwann Cell Biology. INDUSTRIAL REVOLUTION IN KNOWLEDGE MANAGEMENT AND TECHNOLOGY 2023:105-113. [DOI: 10.1007/978-3-031-29265-1_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
15
|
Yuan Y, Wang Y, Wu S, Zhao MY. Review: Myelin clearance is critical for regeneration after peripheral nerve injury. Front Neurol 2022; 13:908148. [PMID: 36588879 PMCID: PMC9801717 DOI: 10.3389/fneur.2022.908148] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 11/17/2022] [Indexed: 12/23/2022] Open
Abstract
Traumatic peripheral nerve injury occurs frequently and is a major clinical and public health problem that can lead to functional impairment and permanent disability. Despite the availability of modern diagnostic procedures and advanced microsurgical techniques, active recovery after peripheral nerve repair is often unsatisfactory. Peripheral nerve regeneration involves several critical events, including the recreation of the microenvironment and remyelination. Results from previous studies suggest that the peripheral nervous system (PNS) has a greater capacity for repair than the central nervous system. Thus, it will be important to understand myelin and myelination specifically in the PNS. This review provides an update on myelin biology and myelination in the PNS and discusses the mechanisms that promote myelin clearance after injury. The roles of Schwann cells and macrophages are considered at length, together with the possibility of exogenous intervention.
Collapse
Affiliation(s)
- YiMing Yuan
- Laboratory of Brain Function and Neurorehabilitation, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yan Wang
- Laboratory of Brain Function and Neurorehabilitation, Heilongjiang University of Chinese Medicine, Harbin, China,Department of Rehabilitation, The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China,*Correspondence: Yan Wang
| | - ShanHong Wu
- Laboratory of Brain Function and Neurorehabilitation, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Ming Yue Zhao
- Laboratory of Brain Function and Neurorehabilitation, Heilongjiang University of Chinese Medicine, Harbin, China,Department of Rehabilitation, The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| |
Collapse
|
16
|
O'Brien AL, West JM, Saffari TM, Nguyen M, Moore AM. Promoting Nerve Regeneration: Electrical Stimulation, Gene Therapy, and Beyond. Physiology (Bethesda) 2022; 37:0. [PMID: 35820181 DOI: 10.1152/physiol.00008.2022] [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] [Indexed: 12/25/2022] Open
Abstract
Peripheral nerve injuries often result in life-altering functional deficits even with optimal management. Unlike the central nervous system, peripheral nerves have the ability to regenerate lost axons after injury; however, axonal regeneration does not equate to full restoration of function. To overcome this physiological shortcoming, advances in nerve regeneration and repair are paramount, including electrical stimulation, gene therapy, and surgical technique advancements.
Collapse
Affiliation(s)
- Andrew L O'Brien
- Department of Plastic and Reconstructive Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Julie M West
- Department of Plastic and Reconstructive Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Tiam M Saffari
- Department of Plastic and Reconstructive Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Minh Nguyen
- Department of Plastic and Reconstructive Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Amy M Moore
- Department of Plastic and Reconstructive Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
| |
Collapse
|
17
|
Wang Q, Li HY, Ling ZM, Chen G, Wei ZY. Inhibition of Schwann cell pannexin 1 attenuates neuropathic pain through the suppression of inflammatory responses. J Neuroinflammation 2022; 19:244. [PMID: 36195881 PMCID: PMC9531429 DOI: 10.1186/s12974-022-02603-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 09/25/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Neuropathic pain is still a challenge for clinical treatment as a result of the comprehensive pathogenesis. Although emerging evidence demonstrates the pivotal role of glial cells in regulating neuropathic pain, the role of Schwann cells and their underlying mechanisms still need to be uncovered. Pannexin 1 (Panx 1), an important membrane channel for the release of ATP and inflammatory cytokines, as well as its activation in central glial cells, contributes to pain development. Here, we hypothesized that Schwann cell Panx 1 participates in the regulation of neuroinflammation and contributes to neuropathic pain. METHODS A mouse model of chronic constriction injury (CCI) in CD1 adult mice or P0-Cre transgenic mice, and in vitro cultured Schwann cells were used. Intrasciatic injection with Panx 1 blockers or the desired virus was used to knock down the expression of Panx 1. Mechanical and thermal sensitivity was assessed using Von Frey and a hot plate assay. The expression of Panx 1 was measured using qPCR, western blotting, and immunofluorescence. The production of cytokines was monitored through qPCR and enzyme-linked immunosorbent assay (ELISA). Panx1 channel activity was detected by ethidium bromide (EB) uptake. RESULTS CCI induced persistent neuroinflammatory responses and upregulation of Panx 1 in Schwann cells. Intrasciatic injection of Panx 1 blockers, carbenoxolone (CBX), probenecid, and Panx 1 mimetic peptide (10Panx) effectively reduced mechanical and heat hyperalgesia. Probenecid treatment of CCI-induced mice significantly reduced Panx 1 expression in Schwann cells, but not in dorsal root ganglion (DRG). In addition, Panx 1 knockdown in Schwann cells with Panx 1 shRNA-AAV in P0-Cre mice significantly reduced CCI-induced neuropathic pain. To determine whether Schwann cell Panx 1 participates in the regulation of neuroinflammation and contributes to neuropathic pain, we evaluated its effect in LPS-treated Schwann cells. We found that inhibition of Panx 1 via CBX and Panx 1-siRNA effectively attenuated the production of selective cytokines, as well as its mechanism of action being dependent on both Panx 1 channel activity and its expression. CONCLUSION In this study, we found that CCI-related neuroinflammation correlates with Panx 1 activation in Schwann cells, indicating that inhibition of Panx 1 channels in Schwann cells reduces neuropathic pain through the suppression of neuroinflammatory responses.
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
| | - Han-Yang Li
- 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, 226001, Jiangsu, China.,Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, 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, 226001, Jiangsu, China. .,Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China.
| | - 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.
| |
Collapse
|
18
|
Lysko DE, Meireles AM, Folland C, McNamara E, Laing NG, Lamont PJ, Ravenscroft G, Talbot WS. Partial loss-of-function variant in neuregulin 1 identified in family with heritable peripheral neuropathy. Hum Mutat 2022; 43:1216-1223. [PMID: 35485770 PMCID: PMC9357049 DOI: 10.1002/humu.24393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/24/2022] [Accepted: 04/27/2022] [Indexed: 11/11/2022]
Abstract
Neuregulin 1 signals are essential for the development and function of Schwann cells, which form the myelin sheath on peripheral axons. Disruption of myelin in the peripheral nervous system can lead to peripheral neuropathy, which is characterized by reduced axonal conduction velocity and sensorimotor deficits. Charcot-Marie-Tooth disease is a group of heritable peripheral neuropathies that may be caused by variants in nearly 100 genes. Despite the evidence that Neuregulin 1 is essential for many aspects of Schwann cell development, previous studies have not reported variants in the neuregulin 1 gene (NRG1) in patients with peripheral neuropathy. We have identified a rare missense variant in NRG1 that is homozygous in a patient with sensory and motor deficits consistent with mixed axonal and de-myelinating peripheral neuropathy. Our in vivo functional studies in zebrafish indicate that the patient variant partially reduces NRG1 function. This study tentatively suggests that variants at the NRG1 locus may cause peripheral neuropathy and that NRG1 should be investigated in families with peripheral neuropathy of unknown cause.
Collapse
Affiliation(s)
- Daniel E Lysko
- Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Ana M Meireles
- Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Chiara Folland
- Harry Perkins Institute of Medical Research, Nedlands, WA, 6009, Australia
- Centre of Medical Research, University of Western Australia, Nedlands, WA, 6009, Australia
| | - Elyshia McNamara
- Harry Perkins Institute of Medical Research, Nedlands, WA, 6009, Australia
- Centre of Medical Research, University of Western Australia, Nedlands, WA, 6009, Australia
| | - Nigel G Laing
- Harry Perkins Institute of Medical Research, Nedlands, WA, 6009, Australia
- Centre of Medical Research, University of Western Australia, Nedlands, WA, 6009, Australia
| | | | - Gianina Ravenscroft
- Harry Perkins Institute of Medical Research, Nedlands, WA, 6009, Australia
- Centre of Medical Research, University of Western Australia, Nedlands, WA, 6009, Australia
- School of Biomedical Sciences, University of Western Australia, Nedlands, WA, 6009, Australia
| | - William S Talbot
- Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| |
Collapse
|
19
|
Qian T, Qiao P, Lu Y, Wang H. Transcription factor SS18L1 regulates the proliferation, migration and differentiation of Schwann cells in peripheral nerve injury. Front Vet Sci 2022; 9:936620. [PMID: 36046506 PMCID: PMC9420995 DOI: 10.3389/fvets.2022.936620] [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: 05/10/2022] [Accepted: 07/27/2022] [Indexed: 11/30/2022] Open
Abstract
Transcription factors bind to specific DNA sequences, modulate the transcription of target genes, and regulate various biological processes, including peripheral nerve regeneration. Our previous analysis showed that SS18L1, a gene encoding the transcription factor SS18-like protein 1, was differentially expressed in the distal sciatic nerve stumps after rat sciatic nerve transection injury, but its effect on peripheral nerve injury has not been reported. In the current study, we isolated and cultured primary Schwann cells, and examined the role of SS18L1 for the biological functions of the cells. Depletion of SS18L1 by siRNA in Schwann cells enhanced cell proliferation and inhibited cell migration, as determined by EdU assay and transwell migration assay, respectively. In addition, silencing of SS18L1 inhibited Schwann cell differentiation induced by HRG and cAMP. Bioinformatics analyses revealed an interaction network of SS18L1, including DF2, SMARCD1, SMARCA4, and SMARCE1, which may be implicated in the regulatory functions of SS18L1 on the proliferation, migration and differentiation of Schwann cells. In conclusion, our results revealed a temporal expression profile of SS18L1 in peripheral nerve injury and its potential roles during the process of nerve recovery.
Collapse
Affiliation(s)
- Tianmei Qian
- Suzhou Medical College of Soochow University, Suzhou, China
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Pingping Qiao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Yingnan Lu
- School of Overseas Education, Changzhou University, Changzhou, China
| | - Hongkui Wang
- Suzhou Medical College of Soochow University, Suzhou, China
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| |
Collapse
|
20
|
Liu T, Wang Y, Lu L, Liu Y. SPIONs mediated magnetic actuation promotes nerve regeneration by inducing and maintaining repair-supportive phenotypes in Schwann cells. J Nanobiotechnology 2022; 20:159. [PMID: 35351151 PMCID: PMC8966266 DOI: 10.1186/s12951-022-01337-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 02/26/2022] [Indexed: 12/18/2022] Open
Abstract
Background Schwann cells, the glial cells in the peripheral nervous system, are highly plastic. In response to nerve injury, Schwann cells are reprogrammed to a series of specialized repair-promoting phenotypes, known as repair Schwann cells, which play a pivotal role in nerve regeneration. However, repair Schwann cells represent a transient and unstable cell state, and these cells progressively lose their repair phenotypes and repair‐supportive capacity; the transience of this state is one of the key reasons for regeneration failure in humans. Therefore, the ability to control the phenotypic stability of repair Schwann cells is of great practical importance as well as biological interest. Results We designed and prepared a type of fluorescent–magnetic bifunctional superparamagnetic iron oxide nanoparticles (SPIONs). In the present study, we established rat sciatic nerve injury models, then applied SPIONs to Schwann cells and established an effective SPION-mediated magnetic actuation system targeting the sciatic nerves. Our results demonstrate that magnetic actuation mediated by SPIONs can induce and maintain repair-supportive phenotypes of Schwann cells, thereby promoting regeneration and functional recovery of the sciatic nerve after crush injury. Conclusions Our research indicate that Schwann cells can sense these external, magnetically driven mechanical forces and transduce them to intracellular biochemical signals that promote nerve regeneration by inducing and maintaining the repair phenotypes of Schwann cells. We hope that this study will provide a new therapeutic strategy to promote the regeneration and repair of injured peripheral nerves. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01337-5.
Collapse
Affiliation(s)
- Ting Liu
- Department of Geriatrics, The First Hospital of Jilin University, Changchun, 130021, People's Republic of China
| | - Yang Wang
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, 130021, People's Republic of China.
| | - Laijin Lu
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, 130021, People's Republic of China
| | - Yi Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, People's Republic of China.
| |
Collapse
|
21
|
Jessen KR, Mirsky R. The Role of c-Jun and Autocrine Signaling Loops in the Control of Repair Schwann Cells and Regeneration. Front Cell Neurosci 2022; 15:820216. [PMID: 35221918 PMCID: PMC8863656 DOI: 10.3389/fncel.2021.820216] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 12/30/2021] [Indexed: 12/12/2022] Open
Abstract
After nerve injury, both Schwann cells and neurons switch to pro-regenerative states. For Schwann cells, this involves reprogramming of myelin and Remak cells to repair Schwann cells that provide the signals and mechanisms needed for the survival of injured neurons, myelin clearance, axonal regeneration and target reinnervation. Because functional repair cells are essential for regeneration, it is unfortunate that their phenotype is not robust. Repair cell activation falters as animals get older and the repair phenotype fades during chronic denervation. These malfunctions are important reasons for the poor outcomes after nerve damage in humans. This review will discuss injury-induced Schwann cell reprogramming and the concept of the repair Schwann cell, and consider the molecular control of these cells with emphasis on c-Jun. This transcription factor is required for the generation of functional repair cells, and failure of c-Jun expression is implicated in repair cell failures in older animals and during chronic denervation. Elevating c-Jun expression in repair cells promotes regeneration, showing in principle that targeting repair cells is an effective way of improving nerve repair. In this context, we will outline the emerging evidence that repair cells are sustained by autocrine signaling loops, attractive targets for interventions aimed at promoting regeneration.
Collapse
Affiliation(s)
- Kristjan R. Jessen
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | | |
Collapse
|
22
|
Human Umbilical Cord Mesenchymal Stem Cell-Derived Extracellular Vesicles Promote the Proliferation of Schwann Cells by Regulating the PI3K/AKT Signaling Pathway via Transferring miR-21. Stem Cells Int 2021; 2021:1496101. [PMID: 34552631 PMCID: PMC8452411 DOI: 10.1155/2021/1496101] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 08/07/2021] [Indexed: 12/13/2022] Open
Abstract
As an alternative mesenchymal stem cell- (MSC-) based therapy, MSC-derived extracellular vesicles (EVs) have shown promise in the field of regenerative medicine. We previously found that human umbilical cord mesenchymal stem cell-derived EVs (hUCMSC-EVs) improved functional recovery and nerve regeneration in a rat model of sciatic nerve transection. However, the underlying mechanisms are poorly understood. Here, we demonstrated for the first time that hUCMSC-EVs promoted the proliferation of Schwann cells by activating the PI3K/AKT signaling pathway. Furthermore, we showed that hUCMSC-EVs mediated Schwann cell proliferation via transfer of miR-21. Our findings highlight a novel mechanism of hUCMSC-EVs in treating peripheral nerve injury and suggest that hUCMSC-EVs may be an attractive option for clinical application in the treatment of peripheral nerve injury.
Collapse
|
23
|
Yao M, Fang J, Tao W, Feng G, Wei M, Gao Y, Xin W, Li Y, Du S. Modulation of proteoglycan receptor regulates RhoA/CRMP2 pathways and promotes axonal myelination. Neurosci Lett 2021; 760:136079. [PMID: 34166723 DOI: 10.1016/j.neulet.2021.136079] [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: 04/25/2021] [Revised: 06/08/2021] [Accepted: 06/18/2021] [Indexed: 11/15/2022]
Abstract
The function of the myelinating system is important because a defective myelin sheath results in various nervous disorders, including multiple sclerosis and peripheral neuropathies. The dorsal root entry zone (DREZ) is a transitional area between the central nervous system (CNS) and the peripheral nervous system (PNS) that is generated by two types of cells-oligodendrocytes and Schwann cells (SCs). It is well known that after injury the extracellular matrix, including the CSPG, impairs axonal myelination by activating protein tyrosine phosphatase-σ (PTPσ) in both cells. The Intracellular Sigma Peptide (ISP) is memetic of the PTPσ wedge region. It competitively binds to PTPσ and regulates the downstream signaling of RhoA. In the present study, we aimed to investigate whether the ISP increased myelination in vivo and in vitro. The in vitro assay was meant to further verify the in vivo mechanisms. We observed that ISP administration could increase axonal myelination both in vivo and in vitro. Furthermore, we provide evidence that, in oligodendrocytes and Schwann cells, the myelination-induced effects of ISP application entail an inverse expression of the RhoA/CRMP2 signaling pathway. Overall, our results indicate that the ISP modulation of PTPσ enhances axonal myelination via the RhoA/CRMP2 signaling pathways.
Collapse
Affiliation(s)
- Min Yao
- School of Pharmaceutical Sciences, Health Science Centre, Shenzhen University, Shenzhen 518060, China; Department of Surgery, The University of Hong Kong, Hong Kong SAR 999077, China; School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Jie Fang
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Wei Tao
- Department of Neurosurgery, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen 518055, China
| | - Gang Feng
- Department of Neurosurgery, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen 518055, China
| | - Mingyi Wei
- Department of Neurosurgery, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen 518055, China
| | - Yuhao Gao
- Department of Neuroscience and Behavioral Biology, Emory College of Arts and Sciences, Emory University, Atlanta, GA 30322, USA
| | - Wen Xin
- Beijing TransGen Biotech Co., Ltd, Beijing 100192, China
| | - Yu Li
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Shiwei Du
- Department of Neurosurgery, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen 518055, China.
| |
Collapse
|
24
|
Yin G, Peng Y, Lin Y, Wang P, Li Z, Wang R, Lin H. Long Non-coding RNA MSTRG.24008.1 Regulates the Regeneration of the Sciatic Nerve via the miR-331-3p-NLRP3/MAL Axis. Front Cell Dev Biol 2021; 9:641603. [PMID: 34150749 PMCID: PMC8213216 DOI: 10.3389/fcell.2021.641603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 05/13/2021] [Indexed: 11/13/2022] Open
Abstract
Peripheral nerve injury (PNI) is a common clinical problem, which can cause severe disability and dramatically affect a patient’s quality of life. Neural regeneration after PNI is a complex biological process that involves a variety of signaling pathways and genes. Emerging studies demonstrated that long non-coding RNAs (lncRNAs) were abnormally expressed after PNI and played pivotal roles in peripheral nerve regeneration. Based on the rat sciatic nerve injury model, we found that the expression levels of several lncRNAs were increased significantly in the sciatic nerve after injury. Software prediction prompted us to focus on one up-regulated lncRNA, MSTRG.24008.1. Dual-luciferase reporter assay, RNA pull-down assay and RNA interference approach verified that MSTRG.24008.1 regulated neuroregeneration via the miR-331-3p/nucleotide-binding oligomerization domain-like pyrin domain containing 3 (NLRP3)/myelin and lymphocyte protein (MAL) axis in vitro. Subsequently, we performed gastrocnemius muscle gravity and sciatic functional index experiments to evaluate the recovery of injured sciatic nerves after MSTRG.24008.1 siRNA interference in vivo. In conclusion, knockdown of MSTRG.24008.1 promotes the regeneration of the sciatic nerve via the miR-331-3p/NLRP3/MAL axis, which may provide a new strategy to evaluate and repair injured peripheral nerves clinically.
Collapse
Affiliation(s)
- Gang Yin
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Peng
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yaofa Lin
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peilin Wang
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhuoxuan Li
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Renyuan Wang
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haodong Lin
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
25
|
Liu C, Fan L, Tian Z, Wen H, Zhou L, Guan P, Luo Y, Chan C, Tan G, Ning C, Rong L, Liu B. Self-curling electroconductive nerve dressing for enhancing peripheral nerve regeneration in diabetic rats. Bioact Mater 2021; 6:3892-3903. [PMID: 33937592 PMCID: PMC8076708 DOI: 10.1016/j.bioactmat.2021.03.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 12/28/2022] Open
Abstract
Conductive scaffolds have been shown to exert a therapeutic effect on patients suffering from peripheral nerve injuries (PNIs). However, conventional conductive conduits are made of rigid structures and have limited applications for impaired diabetic patients due to their mechanical mismatch with neural tissues and poor plasticity. We propose the development of biocompatible electroconductive hydrogels (ECHs) that are identical to a surgical dressing in this study. Based on excellent adhesive and self-healing properties, the thin film-like dressing can be easily attached to the injured nerve fibers, automatically warps a tubular structure without requiring any invasive techniques. The ECH offers an intimate and stable electrical bridge coupling with the electrogenic nerve tissues. The in vitro experiments indicated that the ECH promoted the migration and adhesion of the Schwann cells. Furthermore, the ECH facilitated axonal regeneration and remyelination in vitro and in vivo through the MEK/ERK pathway, thus preventing muscle denervation atrophy while retaining functional recovery. The results of this study are likely to facilitate the development of non-invasive treatment techniques for PNIs in diabetic patients utilizing electroconductive hydrogels. Conventional conductive conduits are made of rigid structures and have limited applications for diabetic patients. Self-curling electroconductive hydrogel with porous, highly conductive, and adhesive properties were identical to a surgical dressing. Electroconductive hydrogel facilitates axonal regeneration and remyelination via MEK/ERK pathway. ECH dressing prevent muscle denervation atrophy and retain functional recovery in diabetic rats.
Collapse
Affiliation(s)
- Can Liu
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China.,Department of Orthopedic Surgery, The First Affiliated Hospital of Zhejiang University, Hangzhou, 310003, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, China
| | - Lei Fan
- College of Materials Science and Technology, South China University of Technology, Guangzhou, 510641, China.,Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Zhenming Tian
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, China
| | - Huiquan Wen
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Lei Zhou
- College of Materials Science and Technology, South China University of Technology, Guangzhou, 510641, China
| | - Pengfei Guan
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, China
| | - Yian Luo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Chuncheung Chan
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, China
| | - Guoxin Tan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Chengyun Ning
- College of Materials Science and Technology, South China University of Technology, Guangzhou, 510641, China
| | - Limin Rong
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, China
| | - Bin Liu
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, China
| |
Collapse
|
26
|
Park K, Shin Y, Lee G, Park H, Choi Y. Dabrafenib Promotes Schwann Cell Differentiation by Inhibition of the MEK-ERK Pathway. Molecules 2021; 26:2141. [PMID: 33917810 PMCID: PMC8068149 DOI: 10.3390/molecules26082141] [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: 03/11/2021] [Revised: 04/04/2021] [Accepted: 04/07/2021] [Indexed: 11/16/2022] Open
Abstract
Schwann cell differentiation involves a dynamic interaction of signaling cascades. However, much remains to be elucidated regarding the function of signaling molecules that differ depending on the context in which the molecules are engaged. Here, we identified a small molecule, dabrafenib, which promotes Schwann cell differentiation in vitro and exploited this compound as a pharmacological tool to understand the molecular mechanisms regulating Schwann cell differentiation. The results indicated that dabrafenib inhibited ERK phosphorylation and enhanced ErbB2 autophosphorylation and Akt phosphorylation, and the effects of dabrafenib on ErbB2 and Akt phosphorylation were phenocopied by pharmacological inhibition of the MEK-ERK signaling pathway. However, the small molecule inhibitors of MEK and ERK had no effect on the expression of Oct6 and EGR2, which are key transcription factors that drive Schwann cell differentiation. In addition, pharmacological inhibition of phosphatidylinositol-3-kinase (PI3K) almost completely interfered with dabrafenib-induced Schwann cell differentiation. These results suggest that the ErbB2-PI3K-Akt axis is required for the induction of Schwann cell differentiation by dabrafenib in vitro. Although additional molecules targeted by dabrafenib remain to be identified, our data provides insights into the crosstalk that exists between the MEK-ERK signaling pathway and the PI3K-Akt axis in Schwann cell differentiation.
Collapse
Affiliation(s)
- Kyuhee Park
- Biocenter, Gyeonggido Business and Science Accelerator, Suwon 16229, Korea; (K.P.); (G.L.)
| | - Yoonkyoung Shin
- Department of Physiology, Peripheral Neuropathy Research Center, Donga University Medical School, Busan 49201, Korea; (Y.S.); (H.P.)
| | - Gyeongbeen Lee
- Biocenter, Gyeonggido Business and Science Accelerator, Suwon 16229, Korea; (K.P.); (G.L.)
| | - Hwantae Park
- Department of Physiology, Peripheral Neuropathy Research Center, Donga University Medical School, Busan 49201, Korea; (Y.S.); (H.P.)
| | - Yongmun Choi
- Biocenter, Gyeonggido Business and Science Accelerator, Suwon 16229, Korea; (K.P.); (G.L.)
| |
Collapse
|
27
|
Wagstaff LJ, Gomez-Sanchez JA, Fazal SV, Otto GW, Kilpatrick AM, Michael K, Wong LYN, Ma KH, Turmaine M, Svaren J, Gordon T, Arthur-Farraj P, Velasco-Aviles S, Cabedo H, Benito C, Mirsky R, Jessen KR. Failures of nerve regeneration caused by aging or chronic denervation are rescued by restoring Schwann cell c-Jun. eLife 2021; 10:e62232. [PMID: 33475496 PMCID: PMC7819709 DOI: 10.7554/elife.62232] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/21/2020] [Indexed: 02/06/2023] Open
Abstract
After nerve injury, myelin and Remak Schwann cells reprogram to repair cells specialized for regeneration. Normally providing strong regenerative support, these cells fail in aging animals, and during chronic denervation that results from slow axon growth. This impairs axonal regeneration and causes significant clinical problems. In mice, we find that repair cells express reduced c-Jun protein as regenerative support provided by these cells declines during aging and chronic denervation. In both cases, genetically restoring Schwann cell c-Jun levels restores regeneration to control levels. We identify potential gene candidates mediating this effect and implicate Shh in the control of Schwann cell c-Jun levels. This establishes that a common mechanism, reduced c-Jun in Schwann cells, regulates success and failure of nerve repair both during aging and chronic denervation. This provides a molecular framework for addressing important clinical problems, suggesting molecular pathways that can be targeted to promote repair in the PNS.
Collapse
Affiliation(s)
- Laura J Wagstaff
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
| | - Jose A Gomez-Sanchez
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández‐CSICSan Juan de AlicanteSpain
| | - Shaline V Fazal
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
| | - Georg W Otto
- University College London Great Ormond Street Institute of Child HealthLondonUnited Kingdom
| | - Alastair M Kilpatrick
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of EdinburghEdinburghUnited Kingdom
| | - Kirolos Michael
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
| | - Liam YN Wong
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
| | - Ki H Ma
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin‐MadisonMadisonUnited States
| | - Mark Turmaine
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
| | - John Svaren
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin‐MadisonMadisonUnited States
| | - Tessa Gordon
- Division of Plastic and Reconstructive Surgery, The Hospital for Sick ChildrenTorontoCanada
| | - Peter Arthur-Farraj
- John Van Geest Centre for Brain repair, Department of Clinical Neurosciences, University of CambridgeCambridgeUnited Kingdom
| | - Sergio Velasco-Aviles
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández‐CSICSan Juan de AlicanteSpain
- Hospital General Universitario de Alicante, ISABIALAlicanteSpain
| | - Hugo Cabedo
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández‐CSICSan Juan de AlicanteSpain
- Hospital General Universitario de Alicante, ISABIALAlicanteSpain
| | - Cristina Benito
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
| | - Rhona Mirsky
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
| | - Kristjan R Jessen
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
| |
Collapse
|
28
|
Qu WR, Zhu Z, Liu J, Song DB, Tian H, Chen BP, Li R, Deng LX. Interaction between Schwann cells and other cells during repair of peripheral nerve injury. Neural Regen Res 2021; 16:93-98. [PMID: 32788452 PMCID: PMC7818858 DOI: 10.4103/1673-5374.286956] [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] [Indexed: 12/18/2022] Open
Abstract
Peripheral nerve injury (PNI) is common and, unlike damage to the central nervous system injured nerves can effectively regenerate depending on the location and severity of injury. Peripheral myelinating glia, Schwann cells (SCs), interact with various cells in and around the injury site and are important for debris elimination, repair, and nerve regeneration. Following PNI, Wallerian degeneration of the distal stump is rapidly initiated by degeneration of damaged axons followed by morphologic changes in SCs and the recruitment of circulating macrophages. Interaction with fibroblasts from the injured nerve microenvironment also plays a role in nerve repair. The replication and migration of injury-induced dedifferentiated SCs are also important in repairing the nerve. In particular, SC migration stimulates axonal regeneration and subsequent myelination of regenerated nerve fibers. This mobility increases SC interactions with other cells in the nerve and the exogenous environment, which influence SC behavior post-injury. Following PNI, SCs directly and indirectly interact with other SCs, fibroblasts, and macrophages. In addition, the inter- and intracellular mechanisms that underlie morphological and functional changes in SCs following PNI still require further research to explain known phenomena and less understood cell-specific roles in the repair of the injured peripheral nerve. This review provides a basic assessment of SC function post-PNI, as well as a more comprehensive evaluation of the literature concerning the SC interactions with macrophages and fibroblasts that can influence SC behavior and, ultimately, repair of the injured nerve.
Collapse
Affiliation(s)
- Wen-Rui Qu
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Zhe Zhu
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Jun Liu
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - De-Biao Song
- Department of Emergency and Critical Medicine, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Heng Tian
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Bing-Peng Chen
- Orthopedic Medical Center, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Rui Li
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Ling-Xiao Deng
- Spinal Cord and Brain Injury Research Group, Stark Neurosciences Research Institute, Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| |
Collapse
|
29
|
Abstract
The proliferation and migration of Schwann cells contribute to axonal outgrowth and functional recovery after peripheral nerve injury. Previously, several microRNAs were abnormally expressed after peripheral nerve injury and they played important roles in peripheral nerve regeneration. However, the role and underlying mechanism of miR-34a in peripheral nerve injury remain largely unknown. The levels of miR-34a and contactin-2 (CNTN2) were detected by quantitative real-time PCR. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide and transwell assays were used to examine cell proliferation and migration, respectively. The protein level of CNTN2 was measured by western blot. The binding sites of miR-34a and CNTN2 were predicted by the online software and confirmed by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. Following sciatic nerve injury, the expression of miR-34a was downregulated in the crushed nerve segment, reaching a minimum at the seventh day. Knockdown of miR-34a enhanced the axon outgrowth of dorsal root ganglion neurons. Moreover, miR-34a overexpression evidently inhibited the proliferation of Schwann cells, whereas its knockdown showed the opposite effects. In addition, CNTN2 was a direct target of miR-34a and its expression was negatively regulated by miR-34a in the crushed nerve segment. Besides, CNTN2 overexpression or knockdown could reverse the effects of miR-34a upregulation or downregulation on proliferation and migration of Schwann cells, respectively. Collectively, miR-34a inhibited the proliferation and migration of Schwann cells via targeting CNTN2, which might provide a new approach to peripheral nerve regeneration.
Collapse
|
30
|
Muppirala AN, Limbach LE, Bradford EF, Petersen SC. Schwann cell development: From neural crest to myelin sheath. WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY 2020; 10:e398. [PMID: 33145925 DOI: 10.1002/wdev.398] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 12/16/2022]
Abstract
Vertebrate nervous system function requires glial cells, including myelinating glia that insulate axons and provide trophic support that allows for efficient signal propagation by neurons. In vertebrate peripheral nervous systems, neural crest-derived glial cells known as Schwann cells (SCs) generate myelin by encompassing and iteratively wrapping membrane around single axon segments. SC gliogenesis and neurogenesis are intimately linked and governed by a complex molecular environment that shapes their developmental trajectory. Changes in this external milieu drive developing SCs through a series of distinct morphological and transcriptional stages from the neural crest to a variety of glial derivatives, including the myelinating sublineage. Cues originate from the extracellular matrix, adjacent axons, and the developing SC basal lamina to trigger intracellular signaling cascades and gene expression changes that specify stages and transitions in SC development. Here, we integrate the findings from in vitro neuron-glia co-culture experiments with in vivo studies investigating SC development, particularly in zebrafish and mouse, to highlight critical factors that specify SC fate. Ultimately, we connect classic biochemical and mutant studies with modern genetic and visualization tools that have elucidated the dynamics of SC development. This article is categorized under: Signaling Pathways > Cell Fate Signaling Nervous System Development > Vertebrates: Regional Development.
Collapse
Affiliation(s)
- Anoohya N Muppirala
- Program in Neuroscience, Harvard Medical School, Boston, Massachusetts, USA.,Department of Neuroscience, Kenyon College, Gambier, Ohio, USA
| | | | | | - Sarah C Petersen
- Department of Neuroscience, Kenyon College, Gambier, Ohio, USA.,Department of Biology, Kenyon College, Gambier, Ohio, USA
| |
Collapse
|
31
|
Li R, Li DH, Zhang HY, Wang J, Li XK, Xiao J. Growth factors-based therapeutic strategies and their underlying signaling mechanisms for peripheral nerve regeneration. Acta Pharmacol Sin 2020; 41:1289-1300. [PMID: 32123299 PMCID: PMC7608263 DOI: 10.1038/s41401-019-0338-1] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/20/2019] [Indexed: 12/21/2022] Open
Abstract
Peripheral nerve injury (PNI), one of the most common concerns following trauma, can result in a significant loss of sensory or motor function. Restoration of the injured nerves requires a complex cellular and molecular response to rebuild the functional axons so that they can accurately connect with their original targets. However, there is no optimized therapy for complete recovery after PNI. Supplementation with exogenous growth factors (GFs) is an emerging and versatile therapeutic strategy for promoting nerve regeneration and functional recovery. GFs activate the downstream targets of various signaling cascades through binding with their corresponding receptors to exert their multiple effects on neurorestoration and tissue regeneration. However, the simple administration of GFs is insufficient for reconstructing PNI due to their short half‑life and rapid deactivation in body fluids. To overcome these shortcomings, several nerve conduits derived from biological tissue or synthetic materials have been developed. Their good biocompatibility and biofunctionality made them a suitable vehicle for the delivery of multiple GFs to support peripheral nerve regeneration. After repairing nerve defects, the controlled release of GFs from the conduit structures is able to continuously improve axonal regeneration and functional outcome. Thus, therapies with growth factor (GF) delivery systems have received increasing attention in recent years. Here, we mainly review the therapeutic capacity of GFs and their incorporation into nerve guides for repairing PNI. In addition, the possible receptors and signaling mechanisms of the GF family exerting their biological effects are also emphasized.
Collapse
Affiliation(s)
- Rui Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
| | - Duo-Hui Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Hong-Yu Zhang
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Jian Wang
- Department of Peripheral Neurosurgery, The First Affiliated Hospital, Wenzhou, Medical University, Wenzhou, 325000, China
| | - Xiao-Kun Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
- Department of Peripheral Neurosurgery, The First Affiliated Hospital, Wenzhou, Medical University, Wenzhou, 325000, China.
| |
Collapse
|
32
|
Zhou Y, Li J, Han B, Zhong R, Zhong H. Schwann cells promote lung cancer proliferation by promoting the M2 polarization of macrophages. Cell Immunol 2020; 357:104211. [PMID: 32977156 DOI: 10.1016/j.cellimm.2020.104211] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/13/2020] [Accepted: 08/31/2020] [Indexed: 12/13/2022]
Abstract
The interplay between immune cells and tumor cells determines the fate of tumorigenesis. Targeting the abnormal immune response of tumors has been recently achieved great success in some patients. Emerging evidence demonstrated the nervous system plays vital roles in immune regulation, but if the nervous system affects the immune-tumor response and the possible mechanism involved remain largely unexplored. Here, we report that Schwann cells, the major component of the peripheral nervous system (PNS), induce M2 polarization of macrophages by secreting cytokines and chemokines, and these polarized macrophages promote the proliferation of lung cancer cells. We cocultured peripheral blood mononuclear cells (PBMCs) with Schwann cells or treated PBMCs with the culture supernatant of Schwann cells. We found that both treatments induced M2 polarization of the macrophages in peripheral blood mononuclear cell cultures. We performed a bioinformatic analysis of the transcriptome of Schwann cells and analyzed cytokines and chemokines by ELISAs. We found that Schwann cells secreted high levels of CCL2, CXCL5, CXCL12, and CXCL8. CCL2 promotes the M2 polarization of macrophages. Furthermore, we isolated CD14-positive macrophages that were cocultured with the Schwann cells and treated A549 and H1299 lung cancer cells with these macrophages. We found that the Schwann cell-polarized macrophages increased the proliferation of the lung cancer cells. Our study sheds new light on the involvement of the PNS in the regulation of tumor progression via a "Schwann cell"-"immune cell"-"tumor cell" axis.
Collapse
Affiliation(s)
- Yan Zhou
- Department of Pulmonary Disease, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jingwen Li
- Department of Pulmonary Disease, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Baohui Han
- Department of Pulmonary Disease, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Runbo Zhong
- Department of Pulmonary Disease, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.
| | - Hua Zhong
- Department of Pulmonary Disease, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.
| |
Collapse
|
33
|
Elsayed H, Faroni A, Ashraf MR, Osuji J, Wunderley L, Zhang L, Elsobky H, Mansour M, Zidan AS, Reid AJ. Development and Characterisation of an in vitro Model of Wallerian Degeneration. Front Bioeng Biotechnol 2020; 8:784. [PMID: 32754584 PMCID: PMC7365951 DOI: 10.3389/fbioe.2020.00784] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 06/22/2020] [Indexed: 02/03/2023] Open
Abstract
Following peripheral nerve injury, a sequence of events termed Wallerian degeneration (WD) takes place at the distal stump in order to allow the regenerating axons to grow back toward the target organs. Schwann cells (SCs) play a lead role in this by initiating the inflammatory response attracting macrophages and immune cells, as well as producing neurotrophic signals that are essential for nerve regeneration. The majority of existing research has focused on tools to improve regeneration, overlooking the critical degeneration phase. This is also due to the lack of in vitro models recapitulating the features of in vivo WD. In particular, to understand the initial SC response following injury, and to investigate potential interventions, a model that isolates the nerve from other systemic influences is required. Stem cell intervention has been extensively studied as a potential therapeutic intervention to augment regeneration; however, data regarding their role in WD is lacking. Thus, in this study we describe an in vitro model using rat sciatic nerve explants degenerating up to 14 days. Characterisation of this model was performed by gene and protein expression for key markers of WD, in addition to immunohistochemical analysis and electron microscopy. We found changes in keeping with WD in vivo: upregulation of repair program protein CJUN, downregulation of myelin protein genes and subsequent disorganisation and breakdown of myelin structure. As a means of testing the effects of stem cell intervention on WD we established indirect co-cultures of human adipose-derived mesenchymal stem cells (AD-MSC) with the degenerating nerve explants. The stem cell intervention potentiated neurotrophic factors and Cjun expression. We conclude that our in vitro model shares the main features of in vivo WD, and we provide proof of principle on its effectiveness to study experimental approaches for nerve regeneration focused on the events happening during WD.
Collapse
Affiliation(s)
- Heba Elsayed
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom.,Department of Neurosurgery, Mansoura University Hospitals, Mansoura, Egypt
| | - Alessandro Faroni
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Mohammad R Ashraf
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Judith Osuji
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Lydia Wunderley
- Division of Cellular and Molecular Function, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Ling Zhang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Hesham Elsobky
- Department of Neurosurgery, Mansoura University Hospitals, Mansoura, Egypt
| | - Mohamed Mansour
- Department of Neurosurgery, Mansoura University Hospitals, Mansoura, Egypt
| | - Ashraf S Zidan
- Department of Neurosurgery, Mansoura University Hospitals, Mansoura, Egypt.,Mansoura University Hospital, Mansoura, Egypt
| | - Adam J Reid
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom.,Department of Plastic Surgery & Burns, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
| |
Collapse
|
34
|
Zhang J, Ren J, Liu Y, Huang D, Lu L. Resveratrol regulates the recovery of rat sciatic nerve crush injury by promoting the autophagy of Schwann cells. Life Sci 2020; 256:117959. [PMID: 32531375 DOI: 10.1016/j.lfs.2020.117959] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 05/30/2020] [Accepted: 06/08/2020] [Indexed: 12/12/2022]
Abstract
Resveratrol has the ability to promote functional recovery after sciatic nerve crush injury (SNCI), though the mechanism through which this occurs in not fully understood. Resveratrol can promote autophagy, a key process in Wallerian degeneration; thus, we hypothesized that resveratrol could promote recovery from SNCI by promoting Schwann cell autophagy and acceleration of Wallerian degeneration. Motor function recovery was assessed by calculating Sciatic Function Indexes (SFIs) at days 7, 14, 21, 28 post SNCI. Autophagy and myelin clearance were assessed by microtubule-associated protein light chain 3B (LC3B) and myelin protein zero (MPZ) immunofluorescence and Western blot analysis on the fourth day after SNCI. The autophagy of Schwann cells following resveratrol administration was quantified by immunofluorescence in RSC96 cells. Immunofluorescence and Transmission electron microscopy (TEM) were also used in Resveratrol treated sciatic nerve four days post-SNCI to find LC3B positive areas and typical double membrane structures represent for autophagy. The SNCI+resveratrol (crush+Res) groups recovered faster than the SNCI+vehicles (crush+V) group. On day four, almost all of the myelin had regenerated in the crush+Res rats, while the crush+V group's myelin remained intact and the expression levels of LC3-II/I was the highest. On day 28 post-injury, both the control and crush+Res groups' myelin neurofibers reached peak numbers as did the thickness of the myelin sheath. Both in vitro and in vivo immunofluorescence showed that LC3B was colocalized with Schwann cells. This is the first study to observe that resveratrol can promote recovery from SCNI by accelerating the myelin clearance process by promoting autophagy of Schwann cells.
Collapse
Affiliation(s)
- Jiayi Zhang
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Jingyan Ren
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Yang Liu
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Dongxu Huang
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Laijin Lu
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
| |
Collapse
|
35
|
Hu X, Li R, Wu Y, Li Y, Zhong X, Zhang G, Kang Y, Liu S, Xie L, Ye J, Xiao J. Thermosensitive heparin-poloxamer hydrogel encapsulated bFGF and NGF to treat spinal cord injury. J Cell Mol Med 2020; 24:8166-8178. [PMID: 32515141 PMCID: PMC7348165 DOI: 10.1111/jcmm.15478] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 04/18/2020] [Accepted: 05/24/2020] [Indexed: 01/10/2023] Open
Abstract
The application of growth factors (GFs) for treating chronic spinal cord injury (SCI) has been shown to promote axonal regeneration and functional recovery. However, direct administration of GFs is limited by their rapid degradation and dilution at the injured sites. Moreover, SCI recovery is a multifactorial process that requires multiple GFs to participate in tissue regeneration. Based on these facts, controlled delivery of multiple growth factors (GFs) to lesion areas is becoming an attractive strategy for repairing SCI. Presently, we developed a GFs‐based delivery system (called GFs‐HP) that consisted of basic fibroblast growth factor (bFGF), nerve growth factor (NGF) and heparin‐poloxamer (HP) hydrogel through self‐assembly mode. This GFs‐HP was a kind of thermosensitive hydrogel that was suitable for orthotopic administration in vivo. Meanwhile, a 3D porous structure of this hydrogel is commonly used to load large amounts of GFs. After single injection of GFs‐HP into the lesioned spinal cord, the sustained release of NGF and bFGF from HP could significantly improve neuronal survival, axon regeneration, reactive astrogliosis suppression and locomotor recovery, when compared with the treatment of free GFs or HP. Moreover, we also revealed that these neuroprotective and neuroregenerative effects of GFs‐HP were likely through activating the phosphatidylinositol 3 kinase and protein kinase B (PI3K/Akt) and mitogen‐activated protein kinase/extracellular signal‐regulated kinase (MAPK/ERK) signalling pathways. Overall, our work will provide an effective therapeutic strategy for SCI repair.
Collapse
Affiliation(s)
- Xiaoli Hu
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China.,Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Rui Li
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China.,Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China.,School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Yanqing Wu
- The Institute of Life Sciences, Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou University, Wenzhou, China
| | - Yi Li
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Xingfeng Zhong
- Department of Anesthesia, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Guanyinsheng Zhang
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Yanmin Kang
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Shuhua Liu
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Ling Xie
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Junming Ye
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China.,The Institute of Life Sciences, Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou University, Wenzhou, China
| |
Collapse
|
36
|
Kim JE, Cho YH, Seo TB. Treadmill exercise activates ATF3 and ERK1/2 downstream molecules to facilitate axonal regrowth after sciatic nerve injury. J Exerc Rehabil 2020; 16:141-147. [PMID: 32509698 PMCID: PMC7248442 DOI: 10.12965/jer.2040188.094] [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: 02/24/2020] [Accepted: 03/27/2020] [Indexed: 01/22/2023] Open
Abstract
The purpose of this study was to investigate the effect of treadmill exer-cise on activating transcription factors such as activating transcription factor 3 (ATF3) and extracellular signal-regulated kinase (ERK1/2) sig-naling pathway to facilitate axonal regrowth after sciatic nerve injury (SNI). The experimental rats divided into the normal control (n=10), sedentary groups for 7 (n=10) and 14 days (n=10) post crush, exercise group for 7 (n=10) and 14 days (n=10) post crush (dpc). The rats in ex-ercise groups run on treadmill device at a speed of 8 m/min for 20 min once a day according to exercise duration. In order to evaluate specific regeneration markers and axonal elongation in injured sciatic nerve, we applied immunofluorescence staining and western blot techniques. Treadmill exercise further increased growth-associated protein (GAP-43) expression and axonal regrowth at 7 and 14 dpc than those in sed-entary group. Among mitogen-activated protein kinase downstream molecules, phospho-ERK1/2 (p-ERK1/2) was enhanced by treadmill ex-ercise at only 7 dpc and decreased to basal level 14 days later. But c-Jun N-terminal kinase, c-Jun, and phospho-cyclic adenosine mono-phosphate response element-binding protein showed a tendency to in-crease continuously until 14 dpc by exercise. ATF3 expression in exer-cise group was upregulated at both 7 and 14 dpc compared to the sed-entary group. These results indicate that treadmill exercise had benefi-cial effect on expression of regeneration-related proteins after SNI, suggesting that exercise might be one of various therapeutic strategies for sciatic nerve regeneration.
Collapse
Affiliation(s)
- Ji-Eun Kim
- Department of Kinesiology, College of Natural Science, Jeju National University, Jeju, Korea
| | - Yeong-Hyun Cho
- Department of Kinesiology, College of Natural Science, Jeju National University, Jeju, Korea
| | - Tae-Beom Seo
- Department of Kinesiology, College of Natural Science, Jeju National University, Jeju, Korea
| |
Collapse
|
37
|
Lafuente Ibáñez de Mendoza I, López Ortega K, Trierveiler M, Oliveira Alves MG, Dias Almeida J, Gándara Vila P, Aguirre Urízar JM, Pérez Sayans M. Oral granular cell tumour: A multicentric study of 56 cases and a systematic review. Oral Dis 2020; 26:573-589. [PMID: 31898368 DOI: 10.1111/odi.13273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/02/2019] [Accepted: 12/26/2019] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Granular cell tumour (GCT) is a benign neoplasm that originates from Schwann cells. Within the oral cavity, it usually appears as a lingual nodule and especially amongst female adults. Histologically, GCT shows a proliferation of polygonal cells with eosinophilic granular cytoplasm, which can be associated with a pseudoepitheliomatous hyperplasia (PEH). In this study, we analyse the main clinicopathological data of intraoral GCT and we compare our results with previous studies. MATERIAL AND METHODS We have studied a series of 56 cases of oral GCT in Spain and Brazil, and we have conducted a systematic review in PubMed, Web of Knowledge and Scopus databases, using the keywords: "granular cell tumour" and oral. RESULTS In our series, GCT appeared as an asymptomatic benign tumour that is more frequent in women and in the tongue. PEH was observed in 32% of the lesions. In the review, we collected 282 cases of oral GCT with a similar clinical profile; seven patients had multiple lesions, and 33% of the cases presented PEH. No cases of malignant oral GCT have been described to date. GCT is an uncommon oral benign neoplasm, mainly unique and asymptomatic, derived from Schwann cells. CONCLUSIONS Although the etiopathogenesis of this oral tumour is unknown, its characteristics suggest that it could have a reactive nature. Conducting a complete clinicopathological study in all intraoral GCT is fundamental in order to dismiss other entities, including oral carcinoma.
Collapse
Affiliation(s)
- Irene Lafuente Ibáñez de Mendoza
- Oral and Maxillofacial Pathology and Oral Medicine Unit, Department of Stomatology II, University of the Basque Country, Lejona, Spain
| | - Karem López Ortega
- Special Care Dentistry Centre (CAPE) and Oral Pathology, Department of Stomatology, University of São Paulo School of Dentistry (USP), São Paulo, Brazil
| | - Marília Trierveiler
- Special Care Dentistry Centre (CAPE) and Oral Pathology, Department of Stomatology, University of São Paulo School of Dentistry (USP), São Paulo, Brazil
| | | | - Janete Dias Almeida
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology of São José dos Campos, São Paulo State University (Unesp), São José dos Campos, Brazil
| | - Pilar Gándara Vila
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, Universidade de Santiago de Compostela, Instituto de Investigación Sanitaria de Santiago (IDIS), Santiago de Compostela, Spain
| | - José Manuel Aguirre Urízar
- Oral and Maxillofacial Pathology and Oral Medicine Unit, Department of Stomatology II, University of the Basque Country, Lejona, Spain
| | - Mario Pérez Sayans
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, Universidade de Santiago de Compostela, Instituto de Investigación Sanitaria de Santiago (IDIS), Santiago de Compostela, Spain
| |
Collapse
|
38
|
Hezroni H, Perry RBT, Ulitsky I. Long Noncoding RNAs in Development and Regeneration of the Neural Lineage. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 2020; 84:165-177. [PMID: 31900326 DOI: 10.1101/sqb.2019.84.039347] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Long noncoding RNAs (lncRNAs) are gathering increasing attention toward their roles in different biological systems. In mammals, the richest repertoires of lncRNAs are expressed in the brain and in the testis, and the diversity of lncRNAs in the nervous system is thought to be related to the diversity and the complexity of its cell types. Supporting this notion, many lncRNAs are differentially expressed between different regions of the brain or in particular cell types, and many lncRNAs are dynamically expressed during embryonic or postnatal neurogenesis. Less is known about the functions of these genes, if any, but they are increasingly implicated in diverse processes in health and disease. Here, we review the current knowledge about the roles and importance of lncRNAs in the central and peripheral nervous systems and discuss the specific niches within gene regulatory networks that might be preferentially occupied by lncRNAs.
Collapse
Affiliation(s)
- Hadas Hezroni
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rotem Ben Tov Perry
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Igor Ulitsky
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 76100, Israel
| |
Collapse
|
39
|
Abstract
In the peripheral nervous system, the vast majority of axons are accommodated within the fibre bundles that constitute the peripheral nerves. Axons within the nerves are in close contact with myelinating glia, the Schwann cells that are ideally placed to respond to, and possibly shape, axonal activity. The mechanisms of intercellular communication in the peripheral nerves may involve direct contact between the cells, as well as signalling via diffusible substances. Neurotransmitter glutamate has been proposed as a candidate extracellular molecule mediating the cross-talk between cells in the peripheral nerves. Two types of experimental findings support this idea: first, glutamate has been detected in the nerves and can be released upon electrical or chemical stimulation of the nerves; second, axons and Schwann cells in the peripheral nerves express glutamate receptors. Yet, the studies providing direct experimental evidence that intercellular glutamatergic signalling takes place in the peripheral nerves during physiological or pathological conditions are largely missing. Remarkably, in the central nervous system, axons and myelinating glia are involved in glutamatergic signalling. This signalling occurs via different mechanisms, the most intriguing of which is fast synaptic communication between axons and oligodendrocyte precursor cells. Glutamate receptors and/or synaptic axon-glia signalling are involved in regulation of proliferation, migration, and differentiation of oligodendrocyte precursor cells, survival of oligodendrocytes, and re-myelination of axons after damage. Does synaptic signalling exist between axons and Schwann cells in the peripheral nerves? What is the functional role of glutamate receptors in the peripheral nerves? Is activation of glutamate receptors in the nerves beneficial or harmful during diseases? In this review, we summarise the limited information regarding glutamate release and glutamate receptors in the peripheral nerves and speculate about possible mechanisms of glutamatergic signalling in the nerves. We highlight the necessity of further research on this topic because it should help to understand the mechanisms of peripheral nervous system development and nerve regeneration during diseases.
Collapse
Affiliation(s)
- Ting-Jiun Chen
- Center for Neuroscience Research, Children's Research Institute, Children's National Medical Centre, Washington, DC, USA
| | - Maria Kukley
- Group of Neuron Glia Interaction, University of Tübingen; Research Institute of Ophthalmology, Tübingen University Hospital, Tübingen, Germany
| |
Collapse
|
40
|
Mikdache A, Fontenas L, Albadri S, Revenu C, Loisel-Duwattez J, Lesport E, Degerny C, Del Bene F, Tawk M. Elmo1 function, linked to Rac1 activity, regulates peripheral neuronal numbers and myelination in zebrafish. Cell Mol Life Sci 2020; 77:161-177. [PMID: 31161284 PMCID: PMC11104998 DOI: 10.1007/s00018-019-03167-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 05/28/2019] [Accepted: 05/28/2019] [Indexed: 12/20/2022]
Abstract
Peripheral nervous system development involves a tight coordination of neuronal birth and death and a substantial remodelling of the myelinating glia cytoskeleton to achieve myelin wrapping of its projecting axons. However, how these processes are coordinated through time is still not understood. We have identified engulfment and cell motility 1, Elmo1, as a novel component that regulates (i) neuronal numbers within the Posterior Lateral Line ganglion and (ii) radial sorting of axons by Schwann cells (SC) and myelination in the PLL system in zebrafish. Our results show that neuronal and myelination defects observed in elmo1 mutant are rescued through small GTPase Rac1 activation. Inhibiting macrophage development leads to a decrease in neuronal numbers, while peripheral myelination is intact. However, elmo1 mutants do not show defective macrophage activity, suggesting a role for Elmo1 in PLLg neuronal development and SC myelination independent of macrophages. Forcing early Elmo1 and Rac1 expression specifically within SCs rescues elmo1-/- myelination defects, highlighting an autonomous role for Elmo1 and Rac1 in radial sorting of axons by SCs and myelination. This uncovers a previously unknown function of Elmo1 that regulates fundamental aspects of PNS development.
Collapse
Affiliation(s)
- Aya Mikdache
- U1195, Inserm, University Paris Sud, University Paris-Saclay, 94276, Le Kremlin Bicêtre, France
| | - Laura Fontenas
- U1195, Inserm, University Paris Sud, University Paris-Saclay, 94276, Le Kremlin Bicêtre, France
- Department of Biology, University of Virginia, Charlottesville, VA, 22904-4328, USA
| | - Shahad Albadri
- Institut Curie, PSL Research University, 75005, Paris, France
| | - Celine Revenu
- Institut Curie, PSL Research University, 75005, Paris, France
| | - Julien Loisel-Duwattez
- U1195, Inserm, University Paris Sud, University Paris-Saclay, 94276, Le Kremlin Bicêtre, France
| | - Emilie Lesport
- U1195, Inserm, University Paris Sud, University Paris-Saclay, 94276, Le Kremlin Bicêtre, France
| | - Cindy Degerny
- U1195, Inserm, University Paris Sud, University Paris-Saclay, 94276, Le Kremlin Bicêtre, France
| | | | - Marcel Tawk
- U1195, Inserm, University Paris Sud, University Paris-Saclay, 94276, Le Kremlin Bicêtre, France.
| |
Collapse
|
41
|
Lee TL, Chiu PH, Li WY, Yang MH, Wei PY, Chu PY, Wang YF, Tai SK. Nerve-tumour interaction enhances the aggressiveness of oral squamous cell carcinoma. Clin Otolaryngol 2019; 44:1087-1095. [PMID: 31574203 DOI: 10.1111/coa.13452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 06/25/2019] [Accepted: 09/29/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Perineural invasion (PNI) is a poor prognostic pathologic feature of oral squamous cell carcinoma (OSCC). The mechanisms of PNI remain poorly understood, and nerve-tumour interactions have been implicated for its pathogenesis. DESIGN AND SETTING Systematic investigation of nerve-tumour interactions was performed using fresh human peripheral nerve. In vitro and in vivo models were used to determine the ability of human peripheral nerves to enhance OSCC migration/invasion. Retrospective cohort study was also carried out in one medical centre from 2001 to 2009. PARTICIPANTS 314 T1-2 OSCC patients. MAIN OUTCOME MEASURES In the transwell migration/invasion assay, the cells in five representative fields were counted. In the nerve implantation model, tumour size was estimated. PNI quantification by PNI focus number was carried out in the OSCC patients to correlate with cervical lymph node metastasis and oncologic outcomes. RESULTS The transwell migration/invasion assay demonstrated that human peripheral nerves, compared with subcutaneous soft tissue, significantly enhanced the migration/invasion abilities of OSCC. Moreover, the enhanced migration was dose-dependent with increased length or number of peripheral nerve segments. The nerve implantation model showed that human peripheral nerve also enhanced OSCC growth in vivo. Finally, increased PNI focus number was found dose-dependently associated with increased cervical lymph node metastasis and decreased 5-year disease-specific survival rates. CONCLUSIONS These results clearly indicated the presence of nerve-tumour interaction that involved paracrine influences leading to aggressiveness of OSCC. Further investigations are required to explore key cell types and molecules involved in nerve-tumour interactions for future therapeutic targeting of PNI in OSCC.
Collapse
Affiliation(s)
- Tsung-Lun Lee
- Department of Otolaryngology, National Yang-Ming University, Taipei, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Po-Hsien Chiu
- Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Wing-Yin Li
- Department of Pathology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Muh-Hwa Yang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.,Infection and Immunity Research Center, National Yang-Ming University, Taipei, Taiwan.,Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Pei-Yin Wei
- Department of Otolaryngology, National Yang-Ming University, Taipei, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Pen-Yuan Chu
- Department of Otolaryngology, National Yang-Ming University, Taipei, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yi-Fen Wang
- Department of Otolaryngology, National Yang-Ming University, Taipei, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shyh-Kuan Tai
- Department of Otolaryngology, National Yang-Ming University, Taipei, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.,Infection and Immunity Research Center, National Yang-Ming University, Taipei, Taiwan
| |
Collapse
|
42
|
Chiocchetti R, Galiazzo G, Tagliavia C, Stanzani A, Giancola F, Menchetti M, Militerno G, Bernardini C, Forni M, Mandrioli L. Cellular Distribution of Canonical and Putative Cannabinoid Receptors in Canine Cervical Dorsal Root Ganglia. Front Vet Sci 2019; 6:313. [PMID: 31608295 PMCID: PMC6761858 DOI: 10.3389/fvets.2019.00313] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/02/2019] [Indexed: 12/11/2022] Open
Abstract
Growing evidence indicates cannabinoid receptors as potential therapeutic targets for chronic pain. Consequently, there is an increasing interest in developing cannabinoid receptor agonists for treating human and veterinary pain. To better understand the actions of a drug, it is of paramount importance to know the cellular distribution of its specific receptor(s). The distribution of canonical and putative cannabinoid receptors in the peripheral and central nervous system of dogs is still in its infancy. In order to help fill this anatomical gap, the present ex vivo study has been designed to identify the cellular sites of cannabinoid and cannabinoid-related receptors in canine spinal ganglia. In particular, the cellular distribution of the cannabinoid receptors type 1 and 2 (CB1 and CB2) and putative cannabinoid receptors G protein-coupled receptor 55 (GPR55), nuclear peroxisome proliferator-activated receptor alpha (PPARα), and transient receptor potential vanilloid type 1 (TRPV1) have been immunohistochemically investigated in the C6–C8 cervical ganglia of dogs. About 50% of the neuronal population displayed weak to moderate CB1 receptor and TRPV1 immunoreactivity, while all of them were CB2-positive and nearly 40% also expressed GPR55 immunolabeling. Schwann cells, blood vessel smooth muscle cells, and pericyte-like cells all expressed CB2 receptor immunoreactivity, endothelial cell being also PPARα-positive. All the satellite glial cells (SGCs) displayed bright GPR55 receptor immunoreactivity. In half of the study dogs, SGCs were also PPARα-positive, and limited to older dogs displayed TRPV1 immunoreactivity. The present study may represent a morphological substrate to consider in order to develop therapeutic strategies against chronic pain.
Collapse
Affiliation(s)
- Roberto Chiocchetti
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Giorgia Galiazzo
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Claudio Tagliavia
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Agnese Stanzani
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Fiorella Giancola
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Marika Menchetti
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Gianfranco Militerno
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Chiara Bernardini
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Monica Forni
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Luciana Mandrioli
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| |
Collapse
|
43
|
Yao C, Yu B. Role of Long Noncoding RNAs and Circular RNAs in Nerve Regeneration. Front Mol Neurosci 2019; 12:165. [PMID: 31316349 PMCID: PMC6611387 DOI: 10.3389/fnmol.2019.00165] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 06/14/2019] [Indexed: 12/19/2022] Open
Abstract
Nerve injuries may cause severe disability and affect the quality of life. It is of great importance to get a full understanding of the biological processes and molecular mechanisms underlying nerve injuries to find and target specific molecules for nerve regeneration. Numerous studies have shown that noncoding RNAs (ncRNAs) participate in diverse biological processes and diseases. Long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) are two major groups of ncRNAs, which attract growing attention. The altered expression patterns of lncRNAs and circRNAs following nerve injury suggest that these ncRNAs might be associated with nerve regeneration. This review will give a brief introduction of lncRNAs and circRNAs. We then summarize the current studies on lncRNAs and circRNAs following peripheral nerve injury and spinal cord injury (SCI). Typical lncRNAs and circRNAs are introduced to illustrate the diverse molecular mechanisms for nerve regeneration. In addition, we also discuss some issues to be addressed in future investigations on lncRNAs and circRNAs.
Collapse
Affiliation(s)
- Chun Yao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Bin Yu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| |
Collapse
|
44
|
Gasparini G, Pellegatta M, Crippa S, Lena MS, Belfiori G, Doglioni C, Taveggia C, Falconi M. Nerves and Pancreatic Cancer: New Insights into a Dangerous Relationship. Cancers (Basel) 2019; 11:E893. [PMID: 31248001 PMCID: PMC6678884 DOI: 10.3390/cancers11070893] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/21/2019] [Accepted: 06/24/2019] [Indexed: 12/24/2022] Open
Abstract
Perineural invasion (PNI) is defined as the presence of neoplastic cells along nerves and/or within the different layers of nervous fibers: epineural, perineural and endoneural spaces. In pancreatic cancer-particularly in pancreatic ductal adenocarcinoma (PDAC)-PNI has a prevalence between 70 and 100%, surpassing any other solid tumor. PNI has been detected in the early stages of pancreatic cancer and has been associated with pain, increased tumor recurrence and diminished overall survival. Such an early, invasive and recurrent phenomenon is probably crucial for tumor growth and metastasis. PNI is a still not a uniformly characterized event; usually it is described only dichotomously ("present" or "absent"). Recently, a more detailed scoring system for PNI has been proposed, though not specific for pancreatic cancer. Previous studies have implicated several molecules and pathways in PNI, among which are secreted neurotrophins, chemokines and inflammatory cells. However, the mechanisms underlying PNI are poorly understood and several aspects are actively being investigated. In this review, we will discuss the main molecules and signaling pathways implicated in PNI and their roles in the PDAC.
Collapse
Affiliation(s)
- Giulia Gasparini
- Pancreas Translational & Clinical Research Center, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
- Axo-Glial Interaction Unit, INSPE, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
| | - Marta Pellegatta
- Axo-Glial Interaction Unit, INSPE, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
| | - Stefano Crippa
- Pancreas Translational & Clinical Research Center, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
- Vita Salute San Raffaele University, 20132 Milan, Italy.
| | - Marco Schiavo Lena
- Pathology Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
| | - Giulio Belfiori
- Pancreas Translational & Clinical Research Center, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
| | - Claudio Doglioni
- Vita Salute San Raffaele University, 20132 Milan, Italy.
- Pathology Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
| | - Carla Taveggia
- Axo-Glial Interaction Unit, INSPE, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
| | - Massimo Falconi
- Pancreas Translational & Clinical Research Center, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
- Vita Salute San Raffaele University, 20132 Milan, Italy.
| |
Collapse
|
45
|
Lv W, Deng B, Duan W, Li Y, Song X, Ji Y, Li Z, Liu Y, Wang X, Li C. FGF9 alters the Wallerian degeneration process by inhibiting Schwann cell transformation and accelerating macrophage infiltration. Brain Res Bull 2019; 152:285-296. [PMID: 31220553 DOI: 10.1016/j.brainresbull.2019.06.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 06/04/2019] [Accepted: 06/13/2019] [Indexed: 01/06/2023]
Abstract
In vitro experiments have proved that Fibroblast Growth Factor 9 (FGF9) was decreased in Schwann cells (SCs) in which Wallerian degeneration (WD) occurred after nerve injury. We hypothesize that FGF9 downregulation in WD has some biological influence on Schwann cells (SCs) and macrophages - the two most important cell components involved in WD. In this study, we employed strategies to regulate FGF9 in sciatic nerve crush by generating a mouse model, wherein Fgf9 was specifically knocked-out in SCs, and an intraneural injection of human FGF9 protein administered to overexpress FGF9 independently. Furthermore, an inhibitor of extracellular-regulated kinases 1/2 (ERK1/2), PD0325901, was used to clarify the underlying downstream mechanism of ERK1/2 activated by FGF9. Analysis of WD revealed the novel features of FGF9: (i) FGF9 was widely expressed in axons and SCs, and was decreased during WD process. (ii) Fgf9 knockout in SCs impaired the debris clearance and eventually impeded the regeneration of nerve fibers after damage. (iii) Fgf9 knockout in SCs promoted the dedifferentiation of SCs and delayed the infiltration of macrophages by decreasing Mcp1, Tnfα, Il1β levels and leaky blood-nerve-barrier (BNB) in WD. (iv) FGF9 injection preserved the nerve fibers, inhibited SCs dedifferentiation and accelerated macrophages infiltration. (v) ERK1/2 phosphorylation was increased by exogenous FGF9 injection. P75, Cyclin D1, Mcp1, Tnfα, Il1β, c-Jun changes by FGF9 intraneural injection were partially reversed by the ERK1/2 inhibitor. Conclusion was that FGF9 inhibited the dedifferentiation of SCs and accelerated the accumulation of macrophages in WD, and exogenous FGF9 took effects partially by ERK1/2.
Collapse
Affiliation(s)
- Wenjing Lv
- Department of Geriatirics, The Affiliated Hospital of Qingdao University, Qingdao 266000, Shandong, PR China.
| | - Binbin Deng
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, PR China
| | - Weisong Duan
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, PR China; Institute of Cardiocerebrovascular Disease, West Heping Road 215, Shijiazhuang 050000, Hebei, PR China; Neurological Laboratory of Hebei Province, Shijiazhuang 050000, Hebei, PR China
| | - Yi Li
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, PR China; Institute of Cardiocerebrovascular Disease, West Heping Road 215, Shijiazhuang 050000, Hebei, PR China
| | - Xueqin Song
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, PR China; Institute of Cardiocerebrovascular Disease, West Heping Road 215, Shijiazhuang 050000, Hebei, PR China; Neurological Laboratory of Hebei Province, Shijiazhuang 050000, Hebei, PR China
| | - Yingxiao Ji
- Department of Neurology, People's hospital of Hebei Province, Shijiazhuang 050000, Hebei, PR China
| | - Zhongyao Li
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, PR China; Neurological Laboratory of Hebei Province, Shijiazhuang 050000, Hebei, PR China
| | - Yakun Liu
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, PR China; Neurological Laboratory of Hebei Province, Shijiazhuang 050000, Hebei, PR China
| | - Xiaoxiao Wang
- Department of Neurology, First Hospital of Handan City, Handan 056000, Hebei, PR China
| | - Chunyan Li
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, PR China; Institute of Cardiocerebrovascular Disease, West Heping Road 215, Shijiazhuang 050000, Hebei, PR China; Neurological Laboratory of Hebei Province, Shijiazhuang 050000, Hebei, PR China.
| |
Collapse
|
46
|
Pawelec KM, Yoon C, Giger RJ, Sakamoto J. Engineering a platform for nerve regeneration with direct application to nerve repair technology. Biomaterials 2019; 216:119263. [PMID: 31220794 DOI: 10.1016/j.biomaterials.2019.119263] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 06/05/2019] [Accepted: 06/07/2019] [Indexed: 12/16/2022]
Abstract
The development of effective treatment options for repair of peripheral nerves is complicated by lack of knowledge concerning the interactions between cells and implants. A promising device, the multichannel scaffold, incorporates microporous channels, aligning glia and directing axonal growth across a nerve gap. To enhance clinical outcomes of nerve repair, a platform, representative of current implant technology, was engineered which 1) recapitulated key device features (porosity and linearity) and 2) demonstrated remyelination of adult neurons. The in vitro platform began with the study of Schwann cells on porous polycaprolactone (PCL) and poly(lactide co-glycolide) (PLGA) substrates. Surface roughness determined glial cell attachment, and an additional layer of topography, 40 μm linear features, aligned Schwann cells and axons. In addition, direct co-culture of sensory neurons with Schwann cells significantly increased neurite outgrowth, compared to neurons cultured alone (naive or pre-conditioned). In contrast to the control substrate (glass), on porous PCL substrates, Schwann cells differentiated into a mature myelinating phenotype, expressing Oct-6, MPZ and MBP. The direct applicability of this platform to nerve implants, including its response to physiological cues, allows for optimization of cell-material interactions, close observation of the regeneration process, and the study of therapeutics, necessary to advance peripheral nerve repair technology.
Collapse
Affiliation(s)
- K M Pawelec
- University of Michigan, Department of Mechanical Engineering, Ann Arbor, MI, 48109, USA
| | - C Yoon
- University of Michigan, Department of Cell and Developmental Biology, Ann Arbor, MI, 48109, USA
| | - R J Giger
- University of Michigan, Department of Cell and Developmental Biology, Ann Arbor, MI, 48109, USA
| | - J Sakamoto
- University of Michigan, Department of Mechanical Engineering, Ann Arbor, MI, 48109, USA.
| |
Collapse
|
47
|
Shurin GV, Kruglov O, Ding F, Lin Y, Hao X, Keskinov AA, You Z, Lokshin AE, LaFramboise WA, Falo LD, Shurin MR, Bunimovich YL. Melanoma-Induced Reprogramming of Schwann Cell Signaling Aids Tumor Growth. Cancer Res 2019; 79:2736-2747. [PMID: 30914431 DOI: 10.1158/0008-5472.can-18-3872] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/29/2019] [Accepted: 03/20/2019] [Indexed: 12/19/2022]
Abstract
The tumor microenvironment has been compared with a nonhealing wound involving a complex interaction between multiple cell types. Schwann cells, the key regulators of peripheral nerve repair, have recently been shown to directly affect nonneural wound healing. Their role in cancer progression, however, has been largely limited to neuropathic pain and perineural invasion. In this study, we showed that melanoma activated otherwise dormant functions of Schwann cells aimed at nerve regeneration and wound healing. Such reprogramming of Schwann cells into repair-like cells occurred during the destruction and displacement of neurons as the tumor expanded and via direct signaling from melanoma cells to Schwann cells, resulting in activation of the nerve injury response. Melanoma-activated Schwann cells significantly altered the microenvironment through their modulation of the immune system and the extracellular matrix in a way that promoted melanoma growth in vitro and in vivo. Local inhibition of Schwann cell activity following cutaneous sensory nerve transection in melanoma orthotopic models significantly decreased the rate of tumor growth. Tumor-associated Schwann cells, therefore, can have a significant protumorigenic effect and may present a novel target for cancer therapy. SIGNIFICANCE: These findings reveal a role of the nerve injury response, particularly through functions of activated Schwann cells, in promoting melanoma growth.
Collapse
Affiliation(s)
- Galina V Shurin
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Oleg Kruglov
- Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Fei Ding
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Yan Lin
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Xingxing Hao
- Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Anton A Keskinov
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Zhaoyang You
- Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,Hillman Cancer Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Anna E Lokshin
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,Department of Immunology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - William A LaFramboise
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Louis D Falo
- Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,Hillman Cancer Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Michael R Shurin
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,Hillman Cancer Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Yuri L Bunimovich
- Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania. .,Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| |
Collapse
|
48
|
Jessen KR, Mirsky R. Schwann Cell Precursors; Multipotent Glial Cells in Embryonic Nerves. Front Mol Neurosci 2019; 12:69. [PMID: 30971890 PMCID: PMC6443887 DOI: 10.3389/fnmol.2019.00069] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 03/04/2019] [Indexed: 12/20/2022] Open
Abstract
The cells of the neural crest, often referred to as neural crest stem cells, give rise to a number of sub-lineages, one of which is Schwann cells, the glial cells of peripheral nerves. Crest cells transform to adult Schwann cells through the generation of two well defined intermediate stages, the Schwann cell precursors (SCP) in early embryonic nerves, and immature Schwann cells (iSch) in late embryonic and perinatal nerves. SCP are formed when neural crest cells enter nascent nerves and form intimate relationships with axons, a diagnostic feature of glial cells. This involves large-scale changes in gene expression, including the activation of established glial cell markers. Like early glia in the CNS, radial glia, SCP retain developmental multipotency and contribute to other crest-derived lineages during embryonic development. SCP, as well as closely related cells termed boundary cap cells, and later stages of the Schwann cell lineage have all been implicated as the tumor initiating cell in NF1 associated neurofibromas. iSch are formed from SCP in a process that involves the appearance of additional differentiation markers, autocrine survival circuits, cellular elongation, a formation of endoneurial connective tissue and basal lamina. Finally, in peri- and post-natal nerves, iSch are reversibly induced by axon-associated signals to form the myelin and non-myelin Schwann cells of adult nerves. This review article discusses early Schwann cell development in detail and describes a large number of molecular signaling systems that control glial development in embryonic nerves.
Collapse
Affiliation(s)
- Kristjan R Jessen
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Rhona Mirsky
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| |
Collapse
|
49
|
Yi S, Liu Q, Wang X, Qian T, Wang H, Zha G, Yu J, Wang P, Gu X, Chu D, Li S. Tau modulates Schwann cell proliferation, migration and differentiation following peripheral nerve injury. J Cell Sci 2019; 132:jcs.222059. [PMID: 30782778 DOI: 10.1242/jcs.222059] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 01/22/2019] [Indexed: 12/14/2022] Open
Abstract
Tau protein (encoded by the gene microtubule-associated protein tau, Mapt) is essential for the assembly and stability of microtubule and the functional maintenance of the nervous system. Tau is highly abundant in neurons and is detectable in astrocytes and oligodendrocytes. However, whether tau is present in Schwann cells, the unique glial cells in the peripheral nervous system, is unclear. Here, we investigated the presence of tau and its coding mRNA, Mapt, in cultured Schwann cells and find that tau is present in these cells. Gene silencing of Mapt promoted Schwann cell proliferation and inhibited Schwann cell migration and differentiation. In vivo application of Mapt siRNA suppressed the migration of Schwann cells after sciatic nerve injury. Consistent with this, Mapt-knockout mice showed elevated proliferation and reduced migration of Schwann cells. Rats injected with Mapt siRNA and Mapt-knockout mice also exhibited impaired myelin and lipid debris clearance. The expression and distribution of the cytoskeleton proteins α-tubulin and F-actin were also disrupted in these animals. These findings demonstrate the existence and biological effects of tau in Schwann cells, and expand our understanding of the function of tau in the nervous system.
Collapse
Affiliation(s)
- Sheng Yi
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Qianyan Liu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Xinghui Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Tianmei Qian
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Hongkui Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Guangbin Zha
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Jun Yu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Pan Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Xiaosong Gu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Dandan Chu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Shiying Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| |
Collapse
|
50
|
Jessen KR, Arthur-Farraj P. Repair Schwann cell update: Adaptive reprogramming, EMT, and stemness in regenerating nerves. Glia 2019; 67:421-437. [PMID: 30632639 DOI: 10.1002/glia.23532] [Citation(s) in RCA: 199] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/20/2018] [Accepted: 09/05/2018] [Indexed: 12/16/2022]
Abstract
Schwann cells respond to nerve injury by cellular reprogramming that generates cells specialized for promoting regeneration and repair. These repair cells clear redundant myelin, attract macrophages, support survival of damaged neurons, encourage axonal growth, and guide axons back to their targets. There are interesting parallels between this response and that found in other tissues. At the cellular level, many other tissues also react to injury by cellular reprogramming, generating cells specialized to promote tissue homeostasis and repair. And at the molecular level, a common feature possessed by Schwann cells and many other cells is the injury-induced activation of genes associated with epithelial-mesenchymal transitions and stemness, differentiation states that are linked to cellular plasticity and that help injury-induced tissue remodeling. The number of signaling systems regulating Schwann cell plasticity is rapidly increasing. Importantly, this includes mechanisms that are crucial for the generation of functional repair Schwann cells and nerve regeneration, although they have no or a minor role elsewhere in the Schwann cell lineage. This encourages the view that selective tools can be developed to control these particular cells, amplify their repair supportive functions and prevent their deterioration. In this review, we discuss the emerging similarities between the injury response seen in nerves and in other tissues and survey the transcription factors, epigenetic mechanisms, and signaling cascades that control repair Schwann cells, with emphasis on systems that selectively regulate the Schwann cell injury response.
Collapse
Affiliation(s)
- Kristjan R Jessen
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Peter Arthur-Farraj
- John Van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| |
Collapse
|