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Liao JX, Huang QM, Pan ZC, Wu J, Zhang WJ. The anti-inflammatory and immunomodulatory effects of olfactory ensheathing cells transplantation in spinal cord injury and concomitant pathological pain. Eur J Pharmacol 2024; 982:176950. [PMID: 39214270 DOI: 10.1016/j.ejphar.2024.176950] [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: 04/26/2024] [Revised: 07/26/2024] [Accepted: 08/27/2024] [Indexed: 09/04/2024]
Abstract
Spinal cord injury (SCI) is a serious and disabling injury that is often accompanied by neuropathic pain (NeP), which severely affects patients' motor and sensory functions and reduces their quality of life. Currently, there is no specific treatment for treating SCI and relieving the accompanying pain, and we can only rely on medication and physical rehabilitation, both of which are ineffective. Researchers have recently identified a novel class of glial cells, olfactory ensheathing cells (OECs), which originate from the olfactory system. Transplantation of OECs into damaged spinal cords has demonstrated their capacity to repair damaged nerves, improve the microenvironment at the point of injury, and They can also restore neural connectivity and alleviate the patient's NeP to a certain extent. Although the effectiveness of OECs transplantation has been confirmed in experiments, the specific mechanisms by which it repairs the spinal cord and relieves pain have not been articulated. Through a review of the literature, it has been established that the ability of OECs to repair and relieve pain is inextricably linked to its anti-inflammatory and immunomodulatory effects. In this regard, it is imperative to gain a deeper understanding of how OECs exert their anti-inflammatory and immunomodulatory effects. The objective of this paper is to provide a comprehensive overview of the mechanisms by which OECs exert anti-inflammatory and immunomodulatory effects. We aim to manipulate the immune microenvironment at the transplantation site through the intervention of cytokines and immune cells, with the goal of enhancing OECs' function or creating a conducive microenvironment for OECs' survival. This approach is expected to improve the therapeutic efficacy of OECs in clinical settings. However, numerous fundamental and clinical challenges remain to be addressed if OEC transplantation therapy is to become a standardized treatment in clinical practice.
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Affiliation(s)
- Jun-Xiang Liao
- The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, Jiangxi province, China
| | - Qi-Ming Huang
- The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, Jiangxi province, China
| | - Zhi-Cheng Pan
- The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, Jiangxi province, China
| | - Jie Wu
- Department of Rehabilitation Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, Jiangxi province, China
| | - Wen-Jun Zhang
- Department of Rehabilitation Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang City, Jiangxi province, China.
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Gottipati MK, D'Amato AR, Saksena J, Popovich PG, Wang Y, Gilbert RJ. Delayed administration of interleukin-4 coacervate alleviates the neurotoxic phenotype of astrocytes and promotes functional recovery after a contusion spinal cord injury. J Neural Eng 2024; 21:046052. [PMID: 39029499 DOI: 10.1088/1741-2552/ad6596] [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: 01/30/2024] [Accepted: 07/19/2024] [Indexed: 07/21/2024]
Abstract
Objective. Macrophages and astrocytes play a crucial role in the aftermath of a traumatic spinal cord injury (SCI). Infiltrating macrophages adopt a pro-inflammatory phenotype while resident astrocytes adopt a neurotoxic phenotype at the injury site, both of which contribute to neuronal death and inhibit axonal regeneration. The cytokine interleukin-4 (IL-4) has shown significant promise in preclinical models of SCI by alleviating the macrophage-mediated inflammation and promoting functional recovery. However, its effect on neurotoxic reactive astrocytes remains to be elucidated, which we explored in this study. We also studied the beneficial effects of a sustained release of IL-4 from an injectable biomaterial compared to bolus administration of IL-4.Approach. We fabricated a heparin-based coacervate capable of anchoring and releasing bioactive IL-4 and tested its efficacyin vitroandin vivo. Main results. We show that IL-4 coacervate is biocompatible and drives a robust anti-inflammatory macrophage phenotype in culture. We also show that IL-4 and IL-4 coacervate can alleviate the reactive neurotoxic phenotype of astrocytes in culture. Finally, using a murine model of contusion SCI, we show that IL-4 and IL-4 coacervate, injected intraspinally 2 d post-injury, can reduce macrophage-mediated inflammation, and alleviate neurotoxic astrocyte phenotype, acutely and chronically, while also promoting neuroprotection with significant improvements in hindlimb locomotor recovery. We observed that IL-4 coacervate can promote a more robust regenerative macrophage phenotypein vitro, as well as match its efficacyin vivo,compared to bolus IL-4.Significance. Our work shows the promise of coacervate as a great choice for local and prolonged delivery of cytokines like IL-4. We support this by showing that the coacervate can release bioactive IL-4, which acts on macrophages and astrocytes to promote a pro-regenerative environment following a SCI leading to robust neuroprotective and functional outcomes.
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Affiliation(s)
- Manoj K Gottipati
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, United States of America
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, United States of America
- Department of Neuroscience, The Ohio State University, 460 W. 12th Avenue, Columbus, OH 43210, United States of America
- Center for Brain and Spinal Cord Repair, The Ohio State University, 460 W. 12th Avenue, Columbus, OH 43210, United States of America
| | - Anthony R D'Amato
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, 134 Hollister Drive, 283 Kimball Hall, Ithaca, NY 14853, United States of America
| | - Jayant Saksena
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, United States of America
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, United States of America
| | - Phillip G Popovich
- Department of Neuroscience, The Ohio State University, 460 W. 12th Avenue, Columbus, OH 43210, United States of America
- Center for Brain and Spinal Cord Repair, The Ohio State University, 460 W. 12th Avenue, Columbus, OH 43210, United States of America
| | - Yadong Wang
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, 134 Hollister Drive, 283 Kimball Hall, Ithaca, NY 14853, United States of America
| | - Ryan J Gilbert
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, United States of America
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, United States of America
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Kim J, Maharjan R, Park J. Current Trends and Innovative Approaches in Cancer Immunotherapy. AAPS PharmSciTech 2024; 25:168. [PMID: 39044047 DOI: 10.1208/s12249-024-02883-x] [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: 01/30/2024] [Accepted: 07/05/2024] [Indexed: 07/25/2024] Open
Abstract
Immunotherapy is one of the most promising therapeutic approaches in the field of cancer treatment. As a tumor progresses, tumor cells employ an array of immune-regulatory mechanisms to suppress immune responses within the tumor microenvironment. Using our understanding of these mechanisms, cancer immunotherapy has been developed to enhance the immune system's effectiveness in treating cancer. Numerous cancer immunotherapies are currently in clinical use, yet many others are either in different stages of development or undergoing clinical studies. In this paper, we briefly discuss the features and current status of cancer immunotherapies. This includes the application of monoclonal antibodies, immune checkpoint inhibitors, adoptive cell therapy, cytokine therapy, cancer vaccines, and gene therapy, all of which have gained significant recognition in clinical practice. Additionally, we discuss limitations that may hinder successful clinical utilization and promising strategies, such as combining immunotherapy with nanotechnology.
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Affiliation(s)
- Jaechang Kim
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone, Lexington, KY, 40506, USA
| | - Ruby Maharjan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone, Lexington, KY, 40506, USA
| | - Jonghyuck Park
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone, Lexington, KY, 40506, USA.
- Spinal Cord and Brain Injury Research Center, College of Medicine, University of Kentucky, Lexington, KY, USA.
- Markey Cancer Center, University of Kentucky, Lexington, KY, USA.
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Zhang T, Shao M, Li H, Chen X, Zhang R, Wu J, Wang J, Guo Y. Decellularized Amnion Membrane Triggers Macrophage Polarization for Desired Host Immune Response. Adv Healthc Mater 2024:e2402139. [PMID: 39039984 DOI: 10.1002/adhm.202402139] [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: 06/10/2024] [Revised: 07/11/2024] [Indexed: 07/24/2024]
Abstract
Appropriate regulation of immunomodulatory responses, particularly acute inflammation involving macrophages, is crucial for the desired functionality of implants. Decellularized amnion membrane (DAM) is produced by removing cellular components and antigenicity, expected to reduce immunogenicity and the risk of inflammation. Despite the potential of DAM as biomaterial implants, few studies have investigated its specific effects on immunomodulation. Here, it is demonstrated that DAM can regulate macrophage-driven inflammatory response and potential mechanisms are investigated. In vitro results show that DAM significantly inhibits M1 polarization in LPS-induced macrophages by inhibiting Toll-like receptors (TLR) signaling pathway and TNF signaling pathway and promotes macrophage M2 polarization. Physical signals from the 3D micro-structure and the active protein, DCN, binding to key targets may play roles in the process. In the subcutaneous implant model in rats, DAM inhibits the persistence of inflammation and fibrous capsule formation, while promoting M2 macrophage polarization, thereby facilitating tissue regeneration. This study provides insights into DAM's effect and potential mechanisms on the balance of M1/M2 macrophage polarization in vitro and vivo, emphasizing the immunomodulation of ECM-based materials as promising implants.
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Affiliation(s)
- Tong Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Mingfei Shao
- Hangzhou CASbios Medical Co., Hangzhou, 310000, P. R. China
| | - Hanfeng Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Ruiying Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jingwen Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Hangzhou CASbios Medical Co., Hangzhou, 310000, P. R. China
| | - Jianing Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yanchuan Guo
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100190, P. R. China
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Taki N, Kimura A, Shiraishi Y, Maruyama T, Ohmori T, Takeshita K. Conditional deletion of IκBζ in hematopoietic cells promotes functional recovery after spinal cord injury in mice. J Orthop Sci 2024:S0949-2658(24)00088-5. [PMID: 38760245 DOI: 10.1016/j.jos.2024.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/02/2024] [Accepted: 04/18/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND Transcription factor protein IκBζ (encoded by the Nfkbiz gene) regulates nuclear factor-κB (NF-κB) and is involved in the pathophysiology of various inflammatory diseases. However, the role of IκBζ in secondary damage following spinal cord injury (SCI) remains to be determined. Here, we investigated the effect of IκBζ expressed in hematopoietic cells on the progression of secondary damage and functional recovery after SCI. METHODS We used conditional IκBζ-knockout mice (Mx1-Cre;Nfkbizfl/f) to examine the role of IκBζ in hematopoietic cells after SCI. Contusion SCI was induced using a force of 60 kdyn. The recovery of locomotor performance was evaluated using the nine-point Basso Mouse Scale (BMS) until 42 days post-injury. Expression patterns of inflammatory cytokines and chemokines were examined by quantitative real-time PCR or proteome array analysis. Bone marrow transplantation (BMT) was performed to eliminate the effect of IκBζ deletion in non-hematopoietic cells. RESULTS Mx1-Cre;Nfkbizfl/fl mice had significantly improved locomotor function compared with wild-type (WT) mice. The mRNA expression of Nfkbiz in WT mice peaked at 12 h after SCI and then decreased slowly in both the spinal cord and white blood cells. In situ hybridization showed that Nfkbiz mRNA was localized in cell nuclei, including macrophage-like cells, in the injured spinal cord of WT mice at 1 day after SCI. Compared with WT mice, Mx1-Cre;Nfkbizfl/fl mice had significantly increased mRNA expressions of interleukin (Il)-4 and Il-10 in the injured spinal cord. In addition, Mx1-Cre;Nfkbizfl/fl mice had significantly higher protein levels of granulocyte-macrophage colony-stimulating factor and C-C motif chemokine 11 compared with WT mice. BMT from Mx1-Cre;Nfkbizfl/fl mice into WT mice improved functional recovery after SCI compared with control mice (WT cells into WT mice). CONCLUSIONS IκBζ deletion in hematopoietic cells improved functional recovery after SCI, possibly by shifting the inflammatory balance towards anti-inflammatory and pro-regenerative directions.
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Affiliation(s)
- Naoya Taki
- Department of Orthopaedic Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Atsushi Kimura
- Department of Orthopaedic Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
| | - Yasuyuki Shiraishi
- Department of Orthopaedic Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Takashi Maruyama
- Mucosal Immunology Section, National Institute for Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20852, USA
| | - Tsukasa Ohmori
- Department of Biochemistry, Jichi Medical University School of Medicine, Tochigi, 329-0498, Japan
| | - Katsushi Takeshita
- Department of Orthopaedic Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
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Chen G, Tong K, Li S, Huang Z, Liu S, Zhu H, Zhong Y, Zhou Z, Jiao G, Wei F, Chen N. Extracellular vesicles released by transforming growth factor-beta 1-preconditional mesenchymal stem cells promote recovery in mice with spinal cord injury. Bioact Mater 2024; 35:135-149. [PMID: 38312519 PMCID: PMC10837068 DOI: 10.1016/j.bioactmat.2024.01.013] [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: 12/12/2023] [Revised: 01/10/2024] [Accepted: 01/15/2024] [Indexed: 02/06/2024] Open
Abstract
Spinal cord injury (SCI) causes neuroinflammation, neuronal death, and severe axonal connections. Alleviating neuroinflammation, protecting residual cells and promoting neuronal regeneration via endogenous neural stem cells (eNSCs) represent potential strategies for SCI treatment. Extracellular vesicles (EVs) released by mesenchymal stem cells have emerged as pathological mediators and alternatives to cell-based therapies following SCI. In the present study, EVs isolated from untreated (control, C-EVs) and TGF-β1-treated (T-EVs) mesenchymal stem cells were injected into SCI mice to compare the therapeutic effects and explore the underlying mechanisms. Our study demonstrated for the first time that the application of T-EVs markedly enhanced the proliferation and antiapoptotic ability of NSCs in vitro. The infusion of T-EVs into SCI mice increased the shift from the M1 to M2 polarization of reactive microglia, alleviated neuroinflammation, and enhanced the neuroprotection of residual cells during the acute phase. Moreover, T-EVs increased the number of eNSCs around the epicenter. Consequently, T-EVs further promoted neurite outgrowth, increased axonal regrowth and remyelination, and facilitated locomotor recovery in the chronic stage. Furthermore, the use of T-EVs in Rictor-/- SCI mice (conditional knockout of Rictor in NSCs) showed that T-EVs failed to increase the activation of eNSCs and improve neurogenesis sufficiently, which suggested that T-EVs might induce the activation of eNSCs by targeting the mTORC2/Rictor pathway. Taken together, our findings indicate the prominent role of T-EVs in the treatment of SCI, and the therapeutic efficacy of T-EVs for SCI treatment might be optimized by enhancing the activation of eNSCs via the mTORC2/Rictor signaling pathway.
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Affiliation(s)
- Guoliang Chen
- Department of Orthopedic Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China
- Dongguan Key Laboratory of Central Nervous System Injury and Repair / Department of Orthopedic Surgery, The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Dongguan, 523573, China
- Department of Orthopedic Surgery, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Kuileung Tong
- Department of Orthopedic Surgery, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Shiming Li
- Department of Orthopedic Surgery, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Zerong Huang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China
| | - Shuangjiang Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China
- Dongguan Key Laboratory of Central Nervous System Injury and Repair / Department of Orthopedic Surgery, The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Dongguan, 523573, China
| | - Haoran Zhu
- Department of Orthopedic Surgery, The Fifth Affiliated Hospital of Jinan University (Heyuan Shenhe People's Hospital), Heyuan, 517400, China
| | - Yanheng Zhong
- Department of Orthopedic Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China
| | - Zhisen Zhou
- Dongguan Key Laboratory of Central Nervous System Injury and Repair / Department of Orthopedic Surgery, The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Dongguan, 523573, China
| | - Genlong Jiao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China
- Dongguan Key Laboratory of Central Nervous System Injury and Repair / Department of Orthopedic Surgery, The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Dongguan, 523573, China
| | - Fuxin Wei
- Department of Orthopedic Surgery, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Ningning Chen
- Department of Orthopedic Surgery, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
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Seo YK. Modulation of Inflammatory Responses to Enhance Nerve Recovery after Spinal Cord Injury. Tissue Eng Regen Med 2024; 21:367-368. [PMID: 38530570 PMCID: PMC10987416 DOI: 10.1007/s13770-024-00639-z] [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] [Accepted: 03/15/2024] [Indexed: 03/28/2024] Open
Abstract
Inflammation can occur at the wound site, and immune cells are necessary to trigger wound healing and tissue regeneration after injury. It is partly initiated by the rapid migration of immune cells such as neutrophils, inflammatory monocytes, and macrophages after spinal cord injury (SCI). Secondary inflammation can increase the wound area; thus, the function of tissues below the injury levels. Monocytes can differentiate into macrophages, and the macrophage phenotype can change from a pro-inflammatory phenotype to an anti-inflammatory phenotype. Therefore, various studies on immunomodulation have been performed to suppress secondary inflammation upon nerve damage. This editorial commentary focuses on various therapeutic methods that modulate inflammation and promote functional regeneration after SCI.
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Affiliation(s)
- Young-Kwon Seo
- Department of Medical Biotechnology, Dongguk University, 3-26, Pil Dong, Choong-Gu, Seoul, 04620, Korea.
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Nekanti U, Sakthivel PS, Zahedi A, Creasman DA, Nishi RA, Dumont CM, Piltti KM, Guardamondo GL, Hernandez N, Chen X, Song H, Lin X, Martinez J, On L, Lakatos A, Pawar K, David BT, Guo Z, Seidlits SK, Xu X, Shea LD, Cummings BJ, Anderson AJ. Multichannel bridges and NSC synergize to enhance axon regeneration, myelination, synaptic reconnection, and recovery after SCI. NPJ Regen Med 2024; 9:12. [PMID: 38499577 PMCID: PMC10948859 DOI: 10.1038/s41536-024-00356-0] [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: 06/09/2023] [Accepted: 02/15/2024] [Indexed: 03/20/2024] Open
Abstract
Regeneration in the injured spinal cord is limited by physical and chemical barriers. Acute implantation of a multichannel poly(lactide-co-glycolide) (PLG) bridge mechanically stabilizes the injury, modulates inflammation, and provides a permissive environment for rapid cellularization and robust axonal regrowth through this otherwise inhibitory milieu. However, without additional intervention, regenerated axons remain largely unmyelinated (<10%), limiting functional repair. While transplanted human neural stem cells (hNSC) myelinate axons after spinal cord injury (SCI), hNSC fate is highly influenced by the SCI inflammatory microenvironment, also limiting functional repair. Accordingly, we investigated the combination of PLG scaffold bridges with hNSC to improve histological and functional outcome after SCI. In vitro, hNSC culture on a PLG scaffold increased oligodendroglial lineage selection after inflammatory challenge. In vivo, acute PLG bridge implantation followed by chronic hNSC transplantation demonstrated a robust capacity of donor human cells to migrate into PLG bridge channels along regenerating axons and integrate into the host spinal cord as myelinating oligodendrocytes and synaptically integrated neurons. Axons that regenerated through the PLG bridge formed synaptic circuits that connected the ipsilateral forelimb muscle to contralateral motor cortex. hNSC transplantation significantly enhanced the total number of regenerating and myelinated axons identified within the PLG bridge. Finally, the combination of acute bridge implantation and hNSC transplantation exhibited robust improvement in locomotor recovery. These data identify a successful strategy to enhance neurorepair through a temporally layered approach using acute bridge implantation and chronic cell transplantation to spare tissue, promote regeneration, and maximize the function of new axonal connections.
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Affiliation(s)
- Usha Nekanti
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA.
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA.
| | - Pooja S Sakthivel
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Atena Zahedi
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Dana A Creasman
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Rebecca A Nishi
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Katja M Piltti
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Glenn L Guardamondo
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Norbert Hernandez
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Xingyuan Chen
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Hui Song
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Xiaoxiao Lin
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Joshua Martinez
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Lillian On
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Anita Lakatos
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Kiran Pawar
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Brian T David
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL, USA
| | - Zhiling Guo
- Department of Medicine & Susan Samueli Integrative Health Institute, University of California, Irvine, CA, USA
| | - Stephanie K Seidlits
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
- Center for Neural Circuit Mapping, University of California Irvine, Irvine, CA, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Brian J Cummings
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA, USA
- Institute for Memory Impairments & Neurological Disorder, University of California Irvine, Irvine, CA, USA
| | - Aileen J Anderson
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA.
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA.
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA, USA.
- Institute for Memory Impairments & Neurological Disorder, University of California Irvine, Irvine, CA, USA.
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9
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Tigner TJ, Dampf G, Tucker A, Huang YC, Jagrit V, Clevenger AJ, Mohapatra A, Raghavan SA, Dulin JN, Alge DL. Clickable Granular Hydrogel Scaffolds for Delivery of Neural Progenitor Cells to Sites of Spinal Cord Injury. Adv Healthc Mater 2024:e2303912. [PMID: 38470994 PMCID: PMC11390979 DOI: 10.1002/adhm.202303912] [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: 11/08/2023] [Revised: 02/27/2024] [Indexed: 03/14/2024]
Abstract
Spinal cord injury (SCI) is a serious condition with limited treatment options. Neural progenitor cell (NPC) transplantation is a promising treatment option, and the identification of novel biomaterial scaffolds that support NPC engraftment and therapeutic activity is a top research priority. The objective of this study is to evaluate in situ assembled poly (ethylene glycol) (PEG)-based granular hydrogels for NPC delivery in a murine model of SCI. Microgel precursors are synthesized by using thiol-norbornene click chemistry to react four-armed PEG-amide-norbornene with enzymatically degradable and cell adhesive peptides. Unreacted norbornene groups are utilized for in situ assembly into scaffolds using a PEG-di-tetrazine linker. The granular hydrogel scaffolds exhibit good biocompatibility and do not adversely affect the inflammatory response after SCI. Moreover, when used to deliver NPCs, the granular hydrogel scaffolds supported NPC engraftment, do not adversely affect the immune response to the NPC grafts, and successfully support graft differentiation toward neuronal or astrocytic lineages as well as axonal extension into the host tissue. Collectively, these data establish PEG-based granular hydrogel scaffolds as a suitable biomaterial platform for NPC delivery and justify further testing, particularly in the context of more severe SCI.
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Affiliation(s)
- Thomas J Tigner
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Gabrielle Dampf
- Department of Biology, Texas A&M University, College Station, TX, 77843-3258, USA
| | - Ashley Tucker
- Department of Biology, Texas A&M University, College Station, TX, 77843-3258, USA
| | - Yu-Chi Huang
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Vipin Jagrit
- Department of Biology, Texas A&M University, College Station, TX, 77843-3258, USA
| | - Abigail J Clevenger
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Arpita Mohapatra
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Shreya A Raghavan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
| | - Jennifer N Dulin
- Department of Biology, Texas A&M University, College Station, TX, 77843-3258, USA
- Texas A&M Institute for Neuroscience, Texas A&M University, College Station, TX, 77843-3474, USA
| | - Daniel L Alge
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843-3003, USA
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10
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Du X, Kong D, Guo R, Liu B, He J, Zhang J, Amponsah AE, Cui H, Ma J. Combined transplantation of hiPSC-NSC and hMSC ameliorated neuroinflammation and promoted neuroregeneration in acute spinal cord injury. Stem Cell Res Ther 2024; 15:67. [PMID: 38444003 PMCID: PMC10916262 DOI: 10.1186/s13287-024-03655-x] [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: 02/03/2023] [Accepted: 02/05/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND Spinal cord injury (SCI) is a serious clinical condition that has pathological changes such as increased neuroinflammation and nerve tissue damage, which eventually manifests as fibrosis of the injured segment and the development of a spinal cord cavity leading to loss of function. Cell-based therapy, such as mesenchymal stem cells (MSCs) and neural stem cells (NSCs) are promising treatment strategies for spinal cord injury via immunological regulation and neural replacement respectively. However, therapeutic efficacy is rare reported on combined transplantation of MSC and NSC in acute mice spinal cord injury even the potential reinforcement might be foreseen. Therefore, this study was conducted to investigate the safety and efficacy of co-transplanting of MSC and NSC sheets into an SCI mice model on the locomotor function and pathological changes of injured spinal cord. METHODS To evaluate the therapeutic effects of combination cells, acute SCI mice model were established and combined transplantation of hiPSC-NSCs and hMSCs into the lesion site immediately after the injury. Basso mouse scale was used to perform the open-field tests of hind limb motor function at days post-operation (dpo) 1, 3, 5, and 7 after SCI and every week after surgery. Spinal cord and serum samples were collected at dpo 7, 14, and 28 to detect inflammatory and neurotrophic factors. Hematoxylin-eosin (H&E) staining, masson staining and transmission electron microscopy were used to evaluate the morphological changes, fibrosis area and ultrastructure of the spinal cord. RESULT M&N transplantation reduced fibrosis formation and the inflammation level while promoting the secretion of nerve growth factor and brain-derived neurotrophic factor. We observed significant reduction in damaged tissue and cavity area, with dramatic improvement in the M&N group. Compared with the Con group, the M&N group exhibited significantly improved behaviors, particularly limb coordination. CONCLUSION Combined transplantation of hiPSC-NSC and hMSC could significantly ameliorate neuroinflammation, promote neuroregeneration, and decrease spinal fibrosis degree in safe and effective pattern, which would be indicated as a novel potential cell treatment option.
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Affiliation(s)
- Xiaofeng Du
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
| | - Desheng Kong
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
| | - Ruiyun Guo
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
| | - Boxin Liu
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
| | - Jingjing He
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
| | - Jinyu Zhang
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
| | - Asiamah Ernest Amponsah
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China
- Department of Biomedical Sciences, College of Health and Allied Sciences, University of Cape Coast, PMB UCC, Cape Coast, Ghana
| | - Huixian Cui
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China.
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China.
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China.
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China.
- Human Anatomy Department, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China.
| | - Jun Ma
- Hebei Medical University-Galway University Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China.
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China.
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China.
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Shijiazhuang, 050017, Hebei Province, China.
- Human Anatomy Department, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China.
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11
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Bonnet M, Ertlen C, Seblani M, Brezun JM, Coyle T, Cereda C, Zuccotti G, Colli M, Desouches C, Decherchi P, Carelli S, Marqueste T. Activated Human Adipose Tissue Transplantation Promotes Sensorimotor Recovery after Acute Spinal Cord Contusion in Rats. Cells 2024; 13:182. [PMID: 38247873 PMCID: PMC10814727 DOI: 10.3390/cells13020182] [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: 11/23/2023] [Revised: 01/09/2024] [Accepted: 01/15/2024] [Indexed: 01/23/2024] Open
Abstract
Traumatic spinal cord injuries (SCIs) often result in sensory, motor, and vegetative function loss below the injury site. Although preclinical results have been promising, significant solutions for SCI patients have not been achieved through translating repair strategies to clinical trials. In this study, we investigated the effective potential of mechanically activated lipoaspirated adipose tissue when transplanted into the epicenter of a thoracic spinal contusion. Male Sprague Dawley rats were divided into three experimental groups: SHAM (uninjured and untreated), NaCl (spinal cord contusion with NaCl application), and AF (spinal cord contusion with transplanted activated human fat). Pro-inflammatory cytokines (IL-1β, IL-6, TNF-α) were measured to assess endogenous inflammation levels 14 days after injury. Sensorimotor recovery was monitored weekly for 12 weeks, and gait and electrophysiological analyses were performed at the end of this observational period. The results indicated that AF reduced endogenous inflammation post-SCI and there was a significant improvement in sensorimotor recovery. Moreover, activated adipose tissue also reinstated the segmental sensorimotor loop and the communication between supra- and sub-lesional spinal cord regions. This investigation highlights the efficacy of activated adipose tissue grafting in acute SCI, suggesting it is a promising therapeutic approach for spinal cord repair after traumatic contusion in humans.
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Affiliation(s)
- Maxime Bonnet
- Aix Marseille Univ, CNRS, ISM, UMR 7287, Institut des Sciences du Mouvement: Etienne-Jules MAREY, Equipe «Plasticité des Systèmes Nerveux et Musculaire» (PSNM), Parc Scientifique et Technologique de Luminy, CC910-163, Avenue de Luminy, CEDEX 09, F-13288 Marseille, France (J.-M.B.); (P.D.)
| | - Céline Ertlen
- Aix Marseille Univ, CNRS, ISM, UMR 7287, Institut des Sciences du Mouvement: Etienne-Jules MAREY, Equipe «Plasticité des Systèmes Nerveux et Musculaire» (PSNM), Parc Scientifique et Technologique de Luminy, CC910-163, Avenue de Luminy, CEDEX 09, F-13288 Marseille, France (J.-M.B.); (P.D.)
| | - Mostafa Seblani
- Aix Marseille Univ, CNRS, ISM, UMR 7287, Institut des Sciences du Mouvement: Etienne-Jules MAREY, Equipe «Plasticité des Systèmes Nerveux et Musculaire» (PSNM), Parc Scientifique et Technologique de Luminy, CC910-163, Avenue de Luminy, CEDEX 09, F-13288 Marseille, France (J.-M.B.); (P.D.)
| | - Jean-Michel Brezun
- Aix Marseille Univ, CNRS, ISM, UMR 7287, Institut des Sciences du Mouvement: Etienne-Jules MAREY, Equipe «Plasticité des Systèmes Nerveux et Musculaire» (PSNM), Parc Scientifique et Technologique de Luminy, CC910-163, Avenue de Luminy, CEDEX 09, F-13288 Marseille, France (J.-M.B.); (P.D.)
| | - Thelma Coyle
- Aix Marseille Univ, CNRS, ISM, UMR 7287, Institut des Sciences du Mouvement: Etienne-Jules MAREY, Equipe «Plasticité des Systèmes Nerveux et Musculaire» (PSNM), Parc Scientifique et Technologique de Luminy, CC910-163, Avenue de Luminy, CEDEX 09, F-13288 Marseille, France (J.-M.B.); (P.D.)
| | - Cristina Cereda
- Center of Functional Genomics and Rare Diseases, Department of Paediatrics, Buzzi Children’s Hospital, Via Ludovico Castelvetro 32, 20154 Milano, Italy
| | - Gianvincenzo Zuccotti
- Pediatric Clinical Research Center «Romeo ed Enrica Invernizzi», Department of Biomedical and Clinical Sciences, University of Milano (UNIMI), Via G.B. Grassi 74, 20157 Milan, Italy;
- Department of Paediatrics, Buzzi Children’s Hospital, Via Ludovico Castelvetro 32, 20154 Milano, Italy
| | - Mattia Colli
- Podgora7 Clinic, Via Podgora 7, 20122 Milano, Italy
| | - Christophe Desouches
- Clinique Phénicia—CD Esthétique, 5 Boulevard Notre Dame, F-13006 Marseille, France
| | - Patrick Decherchi
- Aix Marseille Univ, CNRS, ISM, UMR 7287, Institut des Sciences du Mouvement: Etienne-Jules MAREY, Equipe «Plasticité des Systèmes Nerveux et Musculaire» (PSNM), Parc Scientifique et Technologique de Luminy, CC910-163, Avenue de Luminy, CEDEX 09, F-13288 Marseille, France (J.-M.B.); (P.D.)
| | - Stephana Carelli
- Center of Functional Genomics and Rare Diseases, Department of Paediatrics, Buzzi Children’s Hospital, Via Ludovico Castelvetro 32, 20154 Milano, Italy
- Pediatric Clinical Research Center «Romeo ed Enrica Invernizzi», Department of Biomedical and Clinical Sciences, University of Milano (UNIMI), Via G.B. Grassi 74, 20157 Milan, Italy;
| | - Tanguy Marqueste
- Aix Marseille Univ, CNRS, ISM, UMR 7287, Institut des Sciences du Mouvement: Etienne-Jules MAREY, Equipe «Plasticité des Systèmes Nerveux et Musculaire» (PSNM), Parc Scientifique et Technologique de Luminy, CC910-163, Avenue de Luminy, CEDEX 09, F-13288 Marseille, France (J.-M.B.); (P.D.)
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12
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Patilas C, Varsamos I, Galanis A, Vavourakis M, Zachariou D, Marougklianis V, Kolovos I, Tsalimas G, Karampinas P, Kaspiris A, Vlamis J, Pneumaticos S. The Role of Interleukin-10 in the Pathogenesis and Treatment of a Spinal Cord Injury. Diagnostics (Basel) 2024; 14:151. [PMID: 38248028 PMCID: PMC10814517 DOI: 10.3390/diagnostics14020151] [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: 12/06/2023] [Revised: 12/24/2023] [Accepted: 01/04/2024] [Indexed: 01/23/2024] Open
Abstract
Spinal cord injury (SCI) is a devastating condition that often leads to severe and permanent neurological deficits. The complex pathophysiology of an SCI involves a cascade of events, including inflammation, oxidative stress, and secondary injury processes. Among the myriad of molecular players involved, interleukin-10 (IL-10) emerges as a key regulator with the potential to modulate both the inflammatory response and promote neuroprotection. This comprehensive review delves into the intricate interplay of IL-10 in the pathogenesis of an SCI and explores its therapeutic implications in the quest for effective treatments. IL-10 has been found to regulate inflammation, oxidative stress, neuronal apoptosis, and glial scars after an SCI. Its neuroprotective properties have been evaluated in a plethora of animal studies. IL-10 administration, either isolated or in combination with other molecules or biomaterials, has shown neuroprotective effects through a reduction in inflammation, the promotion of tissue repair and regeneration, the modulation of glial scar formation, and improved functional outcomes. In conclusion, IL-10 emerges as a pivotal player in the pathogenesis and treatment of SCIs. Its multifaceted role in modulating inflammation, oxidative stress, neuronal apoptosis, glial scars, and neuroprotection positions IL-10 as a promising therapeutic target. The ongoing research exploring various strategies for harnessing the potential of IL-10 offers hope for the development of effective treatments that could significantly improve outcomes for individuals suffering from spinal cord injuries. As our understanding of IL-10's intricacies deepens, it opens new avenues for innovative and targeted therapeutic interventions, bringing us closer to the goal of alleviating the profound impact of SCIs on patients' lives.
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Affiliation(s)
| | | | | | - Michail Vavourakis
- 3rd Department of Orthopaedic Surgery, National & Kapodistrian University of Athens, KAT General Hospital, 14561 Athens, Greece
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13
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Saunders MN, Griffin KV, Kalashnikova I, Kolpek D, Smith DR, Saito E, Cummings BJ, Anderson AJ, Shea LD, Park J. Biodegradable nanoparticles targeting circulating immune cells reduce central and peripheral sensitization to alleviate neuropathic pain following spinal cord injury. Pain 2024; 165:92-101. [PMID: 37463227 PMCID: PMC10787809 DOI: 10.1097/j.pain.0000000000002989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 05/26/2023] [Indexed: 07/20/2023]
Abstract
ABSTRACT Neuropathic pain is a critical source of comorbidity following spinal cord injury (SCI) that can be exacerbated by immune-mediated pathologies in the central and peripheral nervous systems. In this article, we investigate whether drug-free, biodegradable, poly(lactide- co -glycolide) (PLG) nanoparticle treatment mitigates the development of post-SCI neuropathic pain in female mice. Our results show that acute treatment with PLG nanoparticles following thoracic SCI significantly reduces tactile and cold hypersensitivity scores in a durable fashion. Nanoparticles primarily reduce peripheral immune-mediated mechanisms of neuropathic pain, including neuropathic pain-associated gene transcript frequency, transient receptor potential ankyrin 1 nociceptor expression, and MCP-1 (CCL2) chemokine production in the subacute period after injury. Altered central neuropathic pain mechanisms during this period are limited to reduced innate immune cell cytokine expression. However, in the chronic phase of SCI, nanoparticle treatment induces changes in both central and peripheral neuropathic pain signaling, driving reductions in cytokine production and other immune-relevant markers. This research suggests that drug-free PLG nanoparticles reprogram peripheral proalgesic pathways subacutely after SCI to reduce neuropathic pain outcomes and improve chronic central pain signaling.
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Affiliation(s)
- Michael N Saunders
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Kate V Griffin
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Irina Kalashnikova
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY USA
| | - Daniel Kolpek
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY USA
| | - Dominique R Smith
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Eiji Saito
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Brian J Cummings
- Department of Anatomy and Neurobiology, University of California, Irvine, CA USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA USA
| | - Aileen J Anderson
- Department of Anatomy and Neurobiology, University of California, Irvine, CA USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Jonghyuck Park
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY USA
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY USA
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14
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Zhou H, Wang J, Zhao P, Le D, Cai S, Mao G. Intravenous administration exosomes derived from human amniotic mesenchymal stem cells improves neurological recovery after acute traumatic spinal cord injury in rats. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2024; 27:1284-1292. [PMID: 39229573 PMCID: PMC11366944 DOI: 10.22038/ijbms.2024.76532.16576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 03/01/2024] [Indexed: 09/05/2024]
Abstract
Objectives Our previous study has showed that human amniotic mesenchymal stem cells (hAMSCs) transplantation improves neurological recovery after traumatic spinal cord injury (TSCI) in rats. However, less is known about the effects of exosomes derived from hAMSCs for TSCI. Here, we investigated whether hAMSCs-derived exosomes improve neurological recovery in TSCI rats and the underlying mechanisms. Materials and Methods A rat traumatic spinal cord injury (TSCI) mode was established using a weight drop device. At 2 hr after TSCI, rats were administered either hAMSCs-derived exosomes or phosphate buffered saline via the tail vein. Locomotor recovery was evaluated by an open-field locomotor rating scale and gridwalk task. Spinal cord water content, hematoxylin and eosin (H&E) staining, Evans blue (EB) dye extravasation, immunofluorescence staining, and enzyme-linked immunosorbent were performed to elucidate the underlying mechanism. Results hAMSCs-derived exosomes significantly reduced the numbers of ED1+ macrophages/microglia and caspase-3+cells and decreased the levels of reactive oxygen species, myeloperoxidase activity and inflammatory cytokines, such as tumor necrosis factor alpha, interleukin-6 and interleukin-1β. In addition, hAMSCs-derived exosomes significantly attenuated spinal cord water content and Evans blue extravasation, and enhanced angiogenesis and axonal regeneration. Finally, hAMSCs-derived exosomes also significantly reduced the lesion volume, inhibited astrogliosis, and improved functional recovery. Conclusion Taken together, these findings demonstrate that hAMSCs-derived exosomes have favourable effects on rats after acute TSCI, and that they may serve as an alternative cell-free therapeutic approach for treating acute TSCI.
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Affiliation(s)
- Honglong Zhou
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
- These authors contributed eqully to this work
| | - Ji Wang
- Department of Neurosurgery, Institute of Neuroscience, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, China
- These authors contributed eqully to this work
| | - Peng Zhao
- Interventional Department, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Dongsheng Le
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Shanshan Cai
- Department of Health Insurance, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Guohua Mao
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, China
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15
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Estera LA, Walsh SP, Headen JA, Williamson RE, Kalinski AL. Neuroinflammation: Breaking barriers and bridging gaps. Neurosci Res 2023; 197:9-17. [PMID: 34748905 DOI: 10.1016/j.neures.2021.11.001] [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] [Received: 11/01/2021] [Accepted: 11/01/2021] [Indexed: 01/04/2023]
Abstract
Neurons are the cells of the nervous system and are responsible for every thought, movement and perception. Immune cells are the cells of the immune system, constantly protecting from foreign pathogens. Understanding the interaction between the two systems is especially important in disease states such as autoimmune or neurodegenerative disease. Unfortunately, this interaction is typically detrimental to the host. However, recent efforts have focused on how neurons and immune cells interact, either directly or indirectly, following traumatic injury to the nervous system. The outcome of this interaction can be beneficial - leading to successful neural repair, or detrimental - leading to functional deficits, depending on where the injury occurs. This review will discuss our understanding of neuron-immune cell interactions after traumatic injury to both the peripheral and central nervous system.
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Affiliation(s)
- Lora A Estera
- Department of Biology, Ball State University, Muncie, IN 47306, USA
| | - Sam P Walsh
- Department of Biology, Ball State University, Muncie, IN 47306, USA
| | - Jordan A Headen
- Department of Biology, Ball State University, Muncie, IN 47306, USA
| | | | - Ashley L Kalinski
- Department of Biology, Ball State University, Muncie, IN 47306, USA.
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16
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Xu A, Yang Y, Shao Y, Jiang M, Sun Y, Feng B. FHL2 regulates microglia M1/M2 polarization after spinal cord injury via PARP14-depended STAT1/6 pathway. Int Immunopharmacol 2023; 124:110853. [PMID: 37708708 DOI: 10.1016/j.intimp.2023.110853] [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: 04/03/2023] [Revised: 08/21/2023] [Accepted: 08/21/2023] [Indexed: 09/16/2023]
Abstract
Neuronal apoptosis and inflammation exacerbate the secondary injury after spinal cord injury (SCI). Four and a half domains 2 (FHL2) is a multifunctional scaffold protein with tissue- and cell-type specific effects on the regulation of inflammation, but its role in SCI remains unclear. The T10 mouse spinal cord contusion model was established, and the mice were immediately injected with lentiviruses carrying FHL2 shRNA after SCI. The results showed that FHL2 expression was increased following SCI, and then gradually decreased. Moreover, FHL2 depletion aggravated functional impairment, neuronal necrosis, and enlarged lesion cavity areas in the injured spinal cord. FHL2 deficiency facilitated neuronal apoptosis by elevating cleaved caspase 3/9 expression, neuroinflammation by regulating microglia polarization, and bone loss. Indeed, FHL2 deficiency increased the secretion of TNF-α and IL-6, M1 microglia polarization, and the activation of STAT1 pathway but decreased the secretion of IL-10 and IL-4, M2 microglia polarization, and the activation of the STAT6 pathway in the spinal cord. In vitro, FHL2 silencing promoted LPS + IFN-γ-induced microglia M1 polarization through activating the STAT1 pathway and alleviated IL-4-induced microglia M2 polarization via inhibiting the STAT6 pathway. FHL2 positively regulated the expression of poly (ADP-ribose) polymerase family member 14 (PARP14) by promoting its transcription. PARP14 overexpression inhibited FHL2 silencing-induced microglia M1 polarization and relieved the inhibitory effect of FHL2 silencing on microglia M2 polarization. Collectively, the study suggests that FHL2 reduces the microglia M1/M2 polarization-mediated inflammation via PARP14-dependent STAT1/6 pathway and thereby improves functional recovery after SCI.
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Affiliation(s)
- Aihua Xu
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yang Yang
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yang Shao
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Manyu Jiang
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yongxin Sun
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Bo Feng
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang, Liaoning, China.
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17
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Ross BC, Kent RN, Saunders MN, Schwartz SR, Smiley BM, Hocevar SE, Chen SC, Xiao C, Williams LA, Anderson AJ, Cummings BJ, Baker BM, Shea LD. Building-Block Size Mediates Microporous Annealed Particle Hydrogel Tube Microenvironment Following Spinal Cord Injury. Adv Healthc Mater 2023:e2302498. [PMID: 37768019 DOI: 10.1002/adhm.202302498] [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: 08/01/2023] [Revised: 09/10/2023] [Indexed: 09/29/2023]
Abstract
Spinal cord injury (SCI) is a life-altering event, which often results in loss of sensory and motor function below the level of trauma. Biomaterial therapies have been widely investigated in SCI to promote directional regeneration but are often limited by their pre-constructed size and shape. Herein, the design parameters of microporous annealed particles (MAPs) are investigated with tubular geometries that conform to the injury and direct axons across the defect to support functional recovery. MAP tubes prepared from 20-, 40-, and 60-micron polyethylene glycol (PEG) beads are generated and implanted in a T9-10 murine hemisection model of SCI. Tubes attenuate glial and fibrotic scarring, increase innate immune cell density, and reduce inflammatory phenotypes in a bead size-dependent manner. Tubes composed of 60-micron beads increase the cell density of the chronic macrophage response, while neutrophil infiltration and phenotypes do not deviate from those seen in controls. At 8 weeks postinjury, implantation of tubes composed of 60-micron beads results in enhanced locomotor function, robust axonal ingrowth, and remyelination through both lumens and the inter-tube space. Collectively, these studies demonstrate the importance of bead size in MAP construction and highlight PEG tubes as a biomaterial therapy to promote regeneration and functional recovery in SCI.
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Affiliation(s)
- Brian C Ross
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Robert N Kent
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Michael N Saunders
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Samantha R Schwartz
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Brooke M Smiley
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Sarah E Hocevar
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
- Neuroscience Graduate Program, University of Michigan Medical School, 204 Washtenaw Ave, Ann Arbor, MI, 48109, USA
| | - Shao-Chi Chen
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Chengchuan Xiao
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, 1105 North University Ave, Ann Arbor, MI, 48109, USA
| | - Laura A Williams
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Aileen J Anderson
- Institute for Memory Impairments and Neurological Disorders, University of California, Biological Sciences III, 2642, Irvine, CA, 92697, USA
- Sue and Bill Gross Stem Cell Research Center, University of California, 845 Health Sciences Rd, Irvine, CA, 92697, USA
- Physical Medicine and Rehabilitation, University of California, 18124 Culver Dr # F, Irvine, CA, 92612, USA
| | - Brian J Cummings
- Institute for Memory Impairments and Neurological Disorders, University of California, Biological Sciences III, 2642, Irvine, CA, 92697, USA
- Sue and Bill Gross Stem Cell Research Center, University of California, 845 Health Sciences Rd, Irvine, CA, 92697, USA
- Physical Medicine and Rehabilitation, University of California, 18124 Culver Dr # F, Irvine, CA, 92612, USA
| | - Brendon M Baker
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
- Department of Chemical Engineering, University of Michigan, 2300 Hayward St, Ann Arbor, MI, 48109, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
- Neuroscience Graduate Program, University of Michigan Medical School, 204 Washtenaw Ave, Ann Arbor, MI, 48109, USA
- Department of Chemical Engineering, University of Michigan, 2300 Hayward St, Ann Arbor, MI, 48109, USA
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18
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Li J, Wang P, Zhou T, Jiang W, Wu H, Zhang S, Deng L, Wang H. Neuroprotective effects of interleukin 10 in spinal cord injury. Front Mol Neurosci 2023; 16:1214294. [PMID: 37492521 PMCID: PMC10363608 DOI: 10.3389/fnmol.2023.1214294] [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: 04/29/2023] [Accepted: 06/26/2023] [Indexed: 07/27/2023] Open
Abstract
Spinal cord injury (SCI) starts with a mechanical and/or bio-chemical insult, followed by a secondary phase, leading progressively to severe collapse of the nerve tissue. Compared to the peripheral nervous system, injured spinal cord is characterized by weak axonal regeneration, which leaves most patients impaired or paralyzed throughout lifetime. Therefore, confining, alleviating, or reducing the expansion of secondary injuries and promoting functional connections between rostral and caudal regions of lesion are the main goals of SCI therapy. Interleukin 10 (IL-10), as a pivotal anti-inflammatory and immunomodulatory cytokine, exerts a wide spectrum of positive effects in the treatment of SCI. The mechanisms underlying therapeutic effects mainly include anti-oxidative stress, limiting excessive inflammation, anti-apoptosis, antinociceptive effects, etc. Furthermore, IL-10 displays synergistic effects when combined with cell transplantation or neurotrophic factor, enhancing treatment outcomes. This review lists pleiotropic mechanisms underlying IL-10-mediated neuroprotection after SCI, which may offer fresh perspectives for clinical translation.
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Affiliation(s)
- Juan Li
- Department of Rehabilitation Medicine, Zhongda Hospital Southeast University, Nanjing, China
| | - Pei Wang
- Department of Rehabilitation Medicine, Zhongda Hospital Southeast University, Nanjing, China
| | - Ting Zhou
- Department of Rehabilitation Medicine, Zhongda Hospital Southeast University, Nanjing, China
| | - Wenwen Jiang
- Department of Rehabilitation Medicine, Zhongda Hospital Southeast University, Nanjing, China
| | - Hang Wu
- Department of Rehabilitation Medicine, Zhongda Hospital Southeast University, Nanjing, China
| | - Shengqi Zhang
- Department of Rehabilitation Medicine, Zhongda Hospital Southeast University, Nanjing, China
| | - Lingxiao Deng
- Department of Neurological Surgery, Spinal Cord and Brain Injury Research Group, Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Hongxing Wang
- Department of Rehabilitation Medicine, Zhongda Hospital Southeast University, Nanjing, China
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19
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Kalashnikova I, Cambell H, Kolpek D, Park J. Optimization and characterization of miRNA-129-5p-encapsulated poly (lactic- co-glycolic acid) nanoparticles to reprogram activated microglia. NANOSCALE ADVANCES 2023; 5:3439-3452. [PMID: 37383067 PMCID: PMC10295030 DOI: 10.1039/d3na00149k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/05/2023] [Indexed: 06/30/2023]
Abstract
Microglia have become a therapeutic target of many inflammation-mediated diseases in the central nervous system (CNS). Recently, microRNA (miRNA) has been proposed as an important regulator of immune responses. Specifically, miRNA-129-5p has been shown to play critical roles in the regulation of microglia activation. We have demonstrated that biodegradable poly (lactic-co-glycolic acid) (PLGA)-based nanoparticles (NPs) modulated innate immune cells and limited neuroinflammation after injury to the CNS. In this study, we optimized and characterized PLGA-based NPs for miRNA-129-5p delivery to utilize their synergistic immunomodulatory features for activated microglia modulation. A series of nanoformulations employing multiple excipients including epigallocatechin gallate (EGCG), spermidine (Sp), or polyethyleneimine (PEI) for miRNA-129-5p complexation and miRNA-129-5p conjugation to PLGA (PLGA-miR) were utilized. We characterized a total of six nanoformulations through physicochemical, biochemical, and molecular biological methods. In addition, we investigated the immunomodulatory effects of multiple nanoformulations. The data indicated that the immunomodulatory effects of nanoformulation, PLGA-miR with the excipient Sp (PLGA-miR+Sp) and PEI (PLGA-miR+PEI) were significant compared to other nanoformulations including naked PLGA-based NP. These nanoformulations promoted a sustained release of miRNA-129-5p and polarization of activated microglia into a more pro-regenerative phenotype. Moreover, they enhanced the expression of multiple regeneration-associated factors, while alleviating the expression of pro-inflammatory factors. Collectively, the proposed nanoformulations in this study highlight the promising therapeutic tools for synergistic immunomodulatory effects between PLGA-based NPs and miRNA-129-5p to modulate activated microglia which will have numerous applications for inflammation-derived diseases.
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Affiliation(s)
- Irina Kalashnikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 S. Limestone Lexington KY 40506 USA +1-859-257-1850
| | - Heather Cambell
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 S. Limestone Lexington KY 40506 USA +1-859-257-1850
| | - Daniel Kolpek
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 S. Limestone Lexington KY 40506 USA +1-859-257-1850
| | - Jonghyuck Park
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 S. Limestone Lexington KY 40506 USA +1-859-257-1850
- Spinal Cord and Brain Injury Research Center, College of Medicine, University of Kentucky Lexington KY USA
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20
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Gál L, Bellák T, Marton A, Fekécs Z, Weissman D, Török D, Biju R, Vizler C, Kristóf R, Beattie MB, Lin PJ, Pardi N, Nógrádi A, Pajer K. Restoration of Motor Function through Delayed Intraspinal Delivery of Human IL-10-Encoding Nucleoside-Modified mRNA after Spinal Cord Injury. RESEARCH (WASHINGTON, D.C.) 2023; 6:0056. [PMID: 36930811 PMCID: PMC10013810 DOI: 10.34133/research.0056] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 01/05/2023] [Indexed: 01/13/2023]
Abstract
Efficient in vivo delivery of anti-inflammatory proteins to modulate the microenvironment of an injured spinal cord and promote neuroprotection and functional recovery is a great challenge. Nucleoside-modified messenger RNA (mRNA) has become a promising new modality that can be utilized for the safe and efficient delivery of therapeutic proteins. Here, we used lipid nanoparticle (LNP)-encapsulated human interleukin-10 (hIL-10)-encoding nucleoside-modified mRNA to induce neuroprotection and functional recovery following rat spinal cord contusion injury. Intralesional administration of hIL-10 mRNA-LNP to rats led to a remarkable reduction of the microglia/macrophage reaction in the injured spinal segment and induced significant functional recovery compared to controls. Furthermore, hIL-10 mRNA treatment induced increased expression in tissue inhibitor of matrix metalloproteinase 1 and ciliary neurotrophic factor levels in the affected spinal segment indicating a time-delayed secondary effect of IL-10 5 d after injection. Our results suggest that treatment with nucleoside-modified mRNAs encoding neuroprotective factors is an effective strategy for spinal cord injury repair.
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Affiliation(s)
- László Gál
- Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Tamás Bellák
- Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Annamária Marton
- National Biotechnology Laboratory, Institute of Genetics, Biological Research Centre, Szeged, Hungary
- Institute of Biochemistry, Biological Research Centre, Szeged, Hungary
| | - Zoltán Fekécs
- Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Drew Weissman
- Department of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Dénes Török
- Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Rachana Biju
- Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Csaba Vizler
- National Biotechnology Laboratory, Institute of Genetics, Biological Research Centre, Szeged, Hungary
- Institute of Biochemistry, Biological Research Centre, Szeged, Hungary
| | - Rebeka Kristóf
- Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | | | | | - Norbert Pardi
- Department of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Antal Nógrádi
- Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Krisztián Pajer
- Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
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21
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Lee CYP, Chooi WH, Ng SY, Chew SY. Modulating neuroinflammation through molecular, cellular and biomaterial-based approaches to treat spinal cord injury. Bioeng Transl Med 2023; 8:e10389. [PMID: 36925680 PMCID: PMC10013833 DOI: 10.1002/btm2.10389] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/02/2022] [Accepted: 07/16/2022] [Indexed: 11/09/2022] Open
Abstract
The neuroinflammatory response that is elicited after spinal cord injury contributes to both tissue damage and reparative processes. The complex and dynamic cellular and molecular changes within the spinal cord microenvironment result in a functional imbalance of immune cells and their modulatory factors. To facilitate wound healing and repair, it is necessary to manipulate the immunological pathways during neuroinflammation to achieve successful therapeutic interventions. In this review, recent advancements and fresh perspectives on the consequences of neuroinflammation after SCI and modulation of the inflammatory responses through the use of molecular-, cellular-, and biomaterial-based therapies to promote tissue regeneration and functional recovery will be discussed.
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Affiliation(s)
- Cheryl Yi-Pin Lee
- Institute of Molecular and Cell Biology ASTAR Research Entities Singapore Singapore
| | - Wai Hon Chooi
- Institute of Molecular and Cell Biology ASTAR Research Entities Singapore Singapore
| | - Shi-Yan Ng
- Institute of Molecular and Cell Biology ASTAR Research Entities Singapore Singapore
| | - Sing Yian Chew
- School of Chemical and Biomedical Engineering Nanyang Technological University Singapore Singapore.,Lee Kong Chian School of Medicine Nanyang Technological University Singapore Singapore.,School of Materials Science and Engineering Nanyang Technological University Singapore Singapore
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22
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Park J, Farmer M, Casson C, Kalashnikova I, Kolpek D. Therapeutic Potential of Combinative shRNA-Encoded Lentivirus-Mediated Gene Silencing to Accelerate Somatosensory Recovery After Spinal Cord Trauma. Neurotherapeutics 2023; 20:564-577. [PMID: 36401079 PMCID: PMC10121969 DOI: 10.1007/s13311-022-01331-7] [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] [Accepted: 11/03/2022] [Indexed: 11/19/2022] Open
Abstract
Neuropathic pain following spinal cord injury (SCI) remains a difficult problem that affects more than 80% of SCI patients. Growing evidence indicates that neuroinflammatory responses play a key role in neuropathic pain after SCI. Short hairpin RNA (shRNA) interference is an efficient tool for the knockdown of disease-related specific gene expression after SCI, yet insufficient data is available to establish guidelines. In this study, we have constructed the transient receptor potential ankyrin 1 (TRPA1) shRNA encoded-lentiviral vector (LV-shTRPA1) and P38 MAPK shRNA encoded-lentiviral vector (LV-shP38) to investigate the silencing effects of shRNAs and their ability to reprogram the neuroinflammatory responses, thereby enhancing somatosensory recovery after SCI. Our in vitro data employing HEK293-FT and activated macrophages demonstrated that delivered LV-shRNAs showed high transduction efficacy with no cytotoxicity. Furthermore, a combination of LV-shP38 and LV-shTRPA1 was found to be most effective at suppressing target genes, cutting the expression of pro-inflammatory and pro-nociceptive factors in the dorsal horn of the spinal cord and dorsal root ganglia, thus contributing to the alleviation of neuronal hypersensitivities after SCI. Overall, our data demonstrated that the combination LV-shP38/shTRPA1 produced a synergistic effect for immunomodulation and reduced neuropathic pain with a favorable risk-to-benefit ratio. Collectively, our LV-mediated shRNA delivery will provide an efficient tool for gene silencing therapeutic approaches to treat various incurable disorders.
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Affiliation(s)
- Jonghyuck Park
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone, Lexington, KY, 40506, USA.
- Spinal Cord and Brain Injury Research Center, University of Kentucky, 741 S. Limestone, Lexington, KY, 40506, USA.
| | - Matthew Farmer
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone, Lexington, KY, 40506, USA
| | - Camara Casson
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone, Lexington, KY, 40506, USA
| | - Irina Kalashnikova
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone, Lexington, KY, 40506, USA
| | - Daniel Kolpek
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone, Lexington, KY, 40506, USA
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23
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Ren J, Zhu B, Gu G, Zhang W, Li J, Wang H, Wang M, Song X, Wei Z, Feng S. Schwann cell-derived exosomes containing MFG-E8 modify macrophage/microglial polarization for attenuating inflammation via the SOCS3/STAT3 pathway after spinal cord injury. Cell Death Dis 2023; 14:70. [PMID: 36717543 PMCID: PMC9887051 DOI: 10.1038/s41419-023-05607-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 01/31/2023]
Abstract
Macrophage/microglia polarization acts as an important part in regulating inflammatory responses in spinal cord injury (SCI). However, the regulation of inflammation of Schwann cell-derived exosomes (SCDEs) for SCI repair is still unclear. Therefore, we intend to find out the effect of SCDEs on regulating the inflammation related to macrophage polarization during the recovery of SCI. Firstly, the thesis demonstrated that SCDEs could attenuate the LPS- inflammation in BMDMs by suppressing M1 polarization and stimulating M2 polarization. Similarly, SCDEs improved functional recovery of female Wistar rats of the SCI contusion model according to BBB (Basso, Beattie, and Bresnahan) score, electrophysiological assay, and the gait analysis system of CatWalk XT. Moreover, MFG-E8 was verified as the main component of SCDEs to improve the inflammatory response by proteomic sequencing and lentiviral transfection. Improvement of the inflammatory microenvironment also inhibited neuronal apoptosis. The knockout of MFG-E8 in SCs can reverse the anti-inflammatory effects of SCDEs treatment. The SOCS3/STAT3 signaling pathway was identified to participate in upregulating M2 polarization induced by MFG-E8. In conclusion, our findings will enrich the mechanism of SCDEs in repairing SCI and provide potential applications and new insights for the clinical translation of SCDEs treatment for SCI.
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Affiliation(s)
- Jie Ren
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Bin Zhu
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Guangjin Gu
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Wencan Zhang
- Department of Orthopedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong, China
| | - Junjin Li
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Hongda Wang
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Min Wang
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Xiaomeng Song
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
| | - Zhijian Wei
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
- Department of Orthopedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong, China.
| | - Shiqing Feng
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
- Department of Orthopedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong, China.
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24
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Denaro S, D’Aprile S, Alberghina C, Pavone AM, Torrisi F, Giallongo S, Longhitano L, Mannino G, Lo Furno D, Zappalà A, Giuffrida R, Tibullo D, Li Volti G, Vicario N, Parenti R. Neurotrophic and immunomodulatory effects of olfactory ensheathing cells as a strategy for neuroprotection and regeneration. Front Immunol 2022; 13:1098212. [PMID: 36601122 PMCID: PMC9806219 DOI: 10.3389/fimmu.2022.1098212] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Accumulating evidence sustains glial cells as critical players during central nervous system (CNS) development, homeostasis and disease. Olfactory ensheathing cells (OECs), a type of specialized glia cells sharing properties with both Schwann cells and astrocytes, are of critical importance in physiological condition during olfactory system development, supporting its regenerative potential throughout the adult life. These characteristics prompted research in the field of cell-based therapy to test OEC grafts in damaged CNS. Neuroprotective mechanisms exerted by OEC grafts are not limited to axonal regeneration and cell differentiation. Indeed, OEC immunomodulatory properties and their phagocytic potential encourage OEC-based approaches for tissue regeneration in case of CNS injury. Herein we reviewed recent advances on the immune role of OECs, their ability to modulate CNS microenvironment via bystander effects and the potential of OECs as a cell-based strategy for tissue regeneration.
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Affiliation(s)
- Simona Denaro
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Simona D’Aprile
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Cristiana Alberghina
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Anna Maria Pavone
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Filippo Torrisi
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Sebastiano Giallongo
- Section of Biochemistry, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Lucia Longhitano
- Section of Biochemistry, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Giuliana Mannino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Debora Lo Furno
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Agata Zappalà
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Rosario Giuffrida
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Daniele Tibullo
- Section of Biochemistry, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Giovanni Li Volti
- Section of Biochemistry, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Nunzio Vicario
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy,*Correspondence: Nunzio Vicario, ; Rosalba Parenti,
| | - Rosalba Parenti
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy,*Correspondence: Nunzio Vicario, ; Rosalba Parenti,
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25
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Plasma Cytokines Level and Spinal Cord MRI Predict Clinical Outcome in a Rat Glial Scar Cryoinjury Model. Biomedicines 2022; 10:biomedicines10102345. [DOI: 10.3390/biomedicines10102345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/07/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022] Open
Abstract
Traumatic injury of the spinal cord is still one of the most challenging problems in the neurosurgical practice. Despite a long history of implementation of translational medicine in the field of spinal cord injury (SCI), it remains one of the most frequent causes of human disability and a critical situation for world healthcare systems. Here, we used our rat model of the of unilateral controlled SCI induced by a cryoinjury, which consistently reproduces glial scarring and posttraumatic cyst formation, and specifically evaluated histological, bioimaging and cytokine data. We propose a 10-grade scoring scale, which can objectively estimate the extent of damage of the experimental SCI according to the magnetic resonance imaging (MRI) results. It provides a homogeneous and reliable visual control of the dynamics of the posttraumatic processes, which makes it possible to clearly distinguish the extent of early damage, the formation of glial scars and the development of posttraumatic syringomyelic cysts. The concentration of cytokines and chemokines in the plasma following the experimental SCI increased up to two orders of magnitude in comparison with intact animals, suggesting that a traumatic injury of the spinal cord was accompanied by a remarkable cytokine storm. Our data suggested that the levels of IL-1α, IL-1β, TNFα, GRO/KC, G-CSF, IFNγ and IL-13 may be considered as a reliable prognostic index for SCI. Finally, we demonstrated that MRI together with plasma cytokines level directly correlated and reliably predicted the clinical outcome following SCI. The present study brings novel noninvasive and intravital methods for the evaluation of the therapeutic efficacy of SCI treatment protocols, which may be easily translated into the clinical practice.
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26
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Cornelison C, Fadel S. Clickable Biomaterials for Modulating Neuroinflammation. Int J Mol Sci 2022; 23:8496. [PMID: 35955631 PMCID: PMC9369181 DOI: 10.3390/ijms23158496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/27/2022] [Accepted: 07/27/2022] [Indexed: 02/04/2023] Open
Abstract
Crosstalk between the nervous and immune systems in the context of trauma or disease can lead to a state of neuroinflammation or excessive recruitment and activation of peripheral and central immune cells. Neuroinflammation is an underlying and contributing factor to myriad neuropathologies including neurodegenerative diseases like Alzheimer's disease and Parkinson's disease; autoimmune diseases like multiple sclerosis; peripheral and central nervous system infections; and ischemic and traumatic neural injuries. Therapeutic modulation of immune cell function is an emerging strategy to quell neuroinflammation and promote tissue homeostasis and/or repair. One such branch of 'immunomodulation' leverages the versatility of biomaterials to regulate immune cell phenotypes through direct cell-material interactions or targeted release of therapeutic payloads. In this regard, a growing trend in biomaterial science is the functionalization of materials using chemistries that do not interfere with biological processes, so-called 'click' or bioorthogonal reactions. Bioorthogonal chemistries such as Michael-type additions, thiol-ene reactions, and Diels-Alder reactions are highly specific and can be used in the presence of live cells for material crosslinking, decoration, protein or cell targeting, and spatiotemporal modification. Hence, click-based biomaterials can be highly bioactive and instruct a variety of cellular functions, even within the context of neuroinflammation. This manuscript will review recent advances in the application of click-based biomaterials for treating neuroinflammation and promoting neural tissue repair.
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Affiliation(s)
- Chase Cornelison
- Department of Biomedical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA;
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27
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Jiang Y, Guo J, Tang X, Wang X, Hao D, Yang H. The Immunological Roles of Olfactory Ensheathing Cells in the Treatment of Spinal Cord Injury. Front Immunol 2022; 13:881162. [PMID: 35669779 PMCID: PMC9163387 DOI: 10.3389/fimmu.2022.881162] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/22/2022] [Indexed: 01/16/2023] Open
Abstract
Spinal cord injury (SCI) is a devastating type of neurological disorder of the central nervous system (CNS) with high mortality and disability. The pathological processes of SCI can usually be described as two stages, namely, primary and acute secondary injuries. Secondary injury produces more significant exacerbations of the initial injury. Among all the mechanisms of secondary damage, infection and inflammatory responses, as the principle culprits in initiating the second phase of SCI, can greatly contribute to the severity of SCI and numerous sequelae after SCI. Therefore, effectively antagonizing pro-inflammatory responses may be a promising treatment strategy to facilitate functional recovery after SCI. Olfactory ensheathing cells (OECs), a unique type of glial cells, have increasingly become potential candidates for cell-based therapy in the injured CNS. Strikingly, there is growing evidence that the mechanisms underlying the anti-inflammatory role of OECs are associated with the immune properties and secretory functions of these cells responsible for anti-neuroinflammation and immunoregulatory effects, leading to maintenance of the internal microenvironment. Accordingly, a more profound understanding of the mechanism of OEC immunological functions in the treatment of SCI would be beneficial to improve the therapeutic clinical applications of OECs for SCI. In this review, we mainly summarize recent research on the cellular and molecular immune attributes of OECs. The unique biological functions of these cells in promoting neural regeneration are discussed in relation of the development of novel therapies for CNS injury.
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Affiliation(s)
- Yizhen Jiang
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Jianbin Guo
- Department of Joint Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Xiangwen Tang
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, China
- Basic Medical School Academy, Shaanxi University of Traditional Chinese Medicine, Xianyang, China
| | - Xiaohui Wang
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Dingjun Hao
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Hao Yang
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Hao Yang,
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Islam A, Tom VJ. The use of viral vectors to promote repair after spinal cord injury. Exp Neurol 2022; 354:114102. [PMID: 35513025 DOI: 10.1016/j.expneurol.2022.114102] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 04/21/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022]
Abstract
Spinal cord injury (SCI) is a devastating event that can permanently disrupt multiple modalities. Unfortunately, the combination of the inhibitory environment at a central nervous system (CNS) injury site and the diminished intrinsic capacity of adult axons for growth results in the failure for robust axonal regeneration, limiting the ability for repair. Delivering genetic material that can either positively or negatively modulate gene expression has the potential to counter the obstacles that hinder axon growth within the spinal cord after injury. A popular gene therapy method is to deliver the genetic material using viral vectors. There are considerations when deciding on a viral vector approach for a particular application, including the type of vector, as well as serotypes, and promoters. In this review, we will discuss some of the aspects to consider when utilizing a viral vector approach to as a therapy for SCI. Additionally, we will discuss some recent applications of gene therapy to target extrinsic and/or intrinsic barriers to promote axon regeneration after SCI in preclinical models. While still in early stages, this approach has potential to treat those living with SCI.
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Affiliation(s)
- Ashraful Islam
- Drexel University College of Medicine, Department of Neurobiology and Anatomy, Marion Murray Spinal Cord Research Center, Philadelphia, PA, USA
| | - Veronica J Tom
- Drexel University College of Medicine, Department of Neurobiology and Anatomy, Marion Murray Spinal Cord Research Center, Philadelphia, PA, USA.
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Fan L, Liu C, Chen X, Zheng L, Zou Y, Wen H, Guan P, Lu F, Luo Y, Tan G, Yu P, Chen D, Deng C, Sun Y, Zhou L, Ning C. Exosomes-Loaded Electroconductive Hydrogel Synergistically Promotes Tissue Repair after Spinal Cord Injury via Immunoregulation and Enhancement of Myelinated Axon Growth. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105586. [PMID: 35253394 PMCID: PMC9069372 DOI: 10.1002/advs.202105586] [Citation(s) in RCA: 136] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/30/2022] [Indexed: 05/19/2023]
Abstract
Electroconductive hydrogels are very attractive candidates for accelerated spinal cord injury (SCI) repair because they match the electrical and mechanical properties of neural tissue. However, electroconductive hydrogel implantation can potentially aggravate inflammation, and hinder its repair efficacy. Bone marrow stem cell-derived exosomes (BMSC-exosomes) have shown immunomodulatory and tissue regeneration effects, therefore, neural tissue-like electroconductive hydrogels loaded with BMSC-exosomes are developed for the synergistic treatment of SCI. These exosomes-loaded electroconductive hydrogels modulate microglial M2 polarization via the NF-κB pathway, and synergistically enhance neuronal and oligodendrocyte differentiation of neural stem cells (NSCs) while inhibiting astrocyte differentiation, and also increase axon outgrowth via the PTEN/PI3K/AKT/mTOR pathway. Furthermore, exosomes combined electroconductive hydrogels significantly decrease the number of CD68-positive microglia, enhance local NSCs recruitment, and promote neuronal and axonal regeneration, resulting in significant functional recovery at the early stage in an SCI mouse model. Hence, the findings of this study demonstrate that the combination of electroconductive hydrogels and BMSC-exosomes is a promising therapeutic strategy for SCI repair.
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Affiliation(s)
- Lei Fan
- School of Materials Science and Engineering and National Engineering Research Center for Tissue Restoration and ReconstructionSouth China University of TechnologyNo. 381, Wushan Road, Tianhe DistrictGuangzhou510641China
| | - Can Liu
- Department of Orthopedic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineHangzhou310003China
| | - Xiuxing Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationDepartment of Medical OncologySun Yat‐sen Memorial HospitalSun Yat‐sen UniversityNo. 107, Yanjiang West Road, Yuexiu District, GuangzhouGuangzhou510120China
| | - Lei Zheng
- Laboratory Medicine CenterNanfang HospitalSouthern Medical UniversityNo. 1838, Guangzhou Avenue North, Baiyun DistrictGuangzhouGuangdong510515China
| | - Yan Zou
- Department of Radiologythe Third Affiliated Hospital of Sun Yat‐sen UniversityNo. 600, Tianhe Road, Tianhe DistrictGuangzhou510630China
| | - Huiquan Wen
- Department of Radiologythe Third Affiliated Hospital of Sun Yat‐sen UniversityNo. 600, Tianhe Road, Tianhe DistrictGuangzhou510630China
| | - Pengfei Guan
- Department of Pediatric OrthopedicCenter for Orthopedic SurgeryThe Third Affiliated Hospital of Southern Medical UniversityNo.183, Zhongshan Avenue WestGuangzhou510515China
| | - Fang Lu
- School of Preclinical MedicineBeijing University of Chinese MedicineNo.11, North Third Ring East Road, Chaoyang DistrictBeijing100029China
| | - Yian Luo
- School of Chemical Engineering and Light IndustryGuangdong University of TechnologyNo.100, Waihuan West Road, Panyu DistrictGuangzhou510006China
| | - Guoxin Tan
- School of Chemical Engineering and Light IndustryGuangdong University of TechnologyNo.100, Waihuan West Road, Panyu DistrictGuangzhou510006China
| | - Peng Yu
- School of Materials Science and Engineering and National Engineering Research Center for Tissue Restoration and ReconstructionSouth China University of TechnologyNo. 381, Wushan Road, Tianhe DistrictGuangzhou510641China
| | - Dafu Chen
- Laboratory of Bone Tissue EngineeringBeijing Research Institute of Orthopaedics and TraumatologyBeijing JiShuiTan HospitalNo.31, Xinjiekou East Street, Xicheng DistrictBeijing100035China
| | - Chunlin Deng
- School of Materials Science and Engineering and National Engineering Research Center for Tissue Restoration and ReconstructionSouth China University of TechnologyNo. 381, Wushan Road, Tianhe DistrictGuangzhou510641China
| | - Yongjian Sun
- Department of Pediatric OrthopedicCenter for Orthopedic SurgeryThe Third Affiliated Hospital of Southern Medical UniversityNo.183, Zhongshan Avenue WestGuangzhou510515China
| | - Lei Zhou
- Guangzhou Key Laboratory of Spine Disease Prevention and TreatmentDepartment of Spine SurgeryThe Third Affiliated HospitalGuangzhou Medical UniversityNo. 63, Duobao Road, Liwan DistrictGuangzhou510150China
| | - Chengyun Ning
- School of Materials Science and Engineering and National Engineering Research Center for Tissue Restoration and ReconstructionSouth China University of TechnologyNo. 381, Wushan Road, Tianhe DistrictGuangzhou510641China
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Effects of Fisetin on Allergic Contact Dermatitis via Regulating the Balance of Th17/Treg in Mice. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:9222541. [PMID: 35437448 PMCID: PMC9013294 DOI: 10.1155/2022/9222541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/16/2022] [Accepted: 03/21/2022] [Indexed: 11/18/2022]
Abstract
Background. Allergic contact dermatitis (ACD) is a form of chronic cutaneous inflammatory disease of immunological origin that has adverse impacts on patient quality of life, underscoring the need for the development of safe and effective therapeutic agents to treat affected individuals. Fisetin is a Chinese herbal preparation that reportedly exhibits antitumor, antioxidant, antimicrobial, anticoagulatory, and antimalarial activity. In the current report, the immunomodulatory activity of fisetin was appraised by assessing its impact on balance between regulatory T (Treg) and Th17 cells in an ACD model. Methods. BALB/c mice (
) were randomized into control, ACD model, CTX positive control (20 mg/kg), and fisetin treatment groups (three dose levels: 2, 4, or 8 mg/kg). ACD induction was achieved by sensitizing mice on the shaved ventral abdomen via the application of 5% DNFB (50 μL) on days 1 and 2, followed by rechallenge in the right ear with 5% DNFB (20 μL) on day 5. Beginning on day 1, immunized mice were intraperitoneally injected with the appropriate fisetin dose (in saline) once per day for 7 days. On day 7, ear swelling, transcription factor expression, Th17/Treg cell populations, and cytokine production were assessed in vivo. Results. Fisetin treatment significantly suppressed ear swelling and associated inflammatory cell infiltration, besides reducing the production of Th17 cytokines (IL-17, TNF-α, and IL-6) and the expression of the Th17 lineage transcription factor RORγt while simultaneously enhancing Treg-specific cytokine production (TGF-β and IL-10) and the expression of the Treg lineage transcription factor Foxp3, thereby restoring the Th17/Treg cell in ACD mice. Conclusions. These data indicate that fisetin exhibits immunomodulatory activity and can alter the Th17/Treg cell balance, highlighting its potential value as a treatment drug for ACD.
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Licero J, Illan MS, Descorbeth M, Cordero K, Figueroa JD, De Leon M. Fatty acid-binding protein 4 (FABP4) inhibition promotes locomotor and autonomic recovery in rats following spinal cord injury. J Neurotrauma 2022; 39:1099-1112. [PMID: 35297679 PMCID: PMC9347423 DOI: 10.1089/neu.2021.0346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The inflammatory response associated with traumatic spinal cord injury (SCI) contributes to locomotor and sensory impairments. Pro-inflammatory (M1) macrophages/microglia (MφMG) are the major cellular players in this response as they promote chronic inflammation resulting in injury expansion and tissue damage. Fatty Acid-Binding Protein 4 (FABP4) promotes M1 MφMG differentiation; however, it is unknown if FABP4 also plays a role in the etiology of SCI. The present study investigates whether FABP4's gene expression influences functional recovery following SCI. Analysis of qPCR data shows a robust induction of FABP4 mRNA (>100 fold) in rats subjected to a T9-T10 contusion injury compared to control. Western blot experiments reveal significant upregulation of FABP4 protein at the injury epicenter, and immunofluorescence analysis identifies this upregulation occurs in CD11b+ MφMG. Furthermore, upregulation of FABP4 gene expression correlates with PPARγ downregulation, inactivation of Iκβα, and the activation of the NF-κB pathway. Analysis of locomotor recovery using the Basso-Beattie-Bresnahan's (BBB) locomotor scale and the CatWalk gait analysis system shows that injured rats treated with FABP4 inhibitor BMS309403 have significant improvements in locomotion compared to vehicle controls. Additionally, inhibitor-treated rats exhibit enhanced autonomic bladder reflex recovery. Immunofluorescence experiments also show the administration of the FABP4 inhibitor increases the number of CD163+ and Liver Arginase+ M2 MφMG within the epicenter and penumbra of the injured spinal cord 28 dpi. These findings show that FABP4 may significantly exacerbate locomotor and sensory impairments during SCI by modulating macrophage/microglial activity.
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Affiliation(s)
- Jenniffer Licero
- Loma Linda University, Center for Health Disparities and Molecular Medicine, 142 Mortensen Hall, 11085 Campus St, Loma Linda, California, United States, 92354;
| | - Miguel S Illan
- Loma Linda University, Center for Health Disparities and Molecular Medicine, 142 Mortensen Hall, 11085 Campus St, Loma Linda, California, United States, 92354;
| | - Magda Descorbeth
- Loma Linda University, Center for Health Disparities and Molecular Medicine, Loma Linda, California, United States;
| | - Kathia Cordero
- Loma Linda University, Center for Health Disparities and Molecular Medicine, Loma Linda, California, United States;
| | - Johnny D Figueroa
- Loma Linda University, Center for Health Disparities and Molecular Medicine, Loma Linda, California, United States;
| | - Marino De Leon
- Loma Linda University, Center for Health Disparities and Molecular Medicine, 142 Mortensen Hall, 11085 Campus St, Loma Linda, California, United States, 92354;
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Dervan A, Franchi A, Almeida-Gonzalez FR, Dowling JK, Kwakyi OB, McCoy CE, O’Brien FJ, Hibbitts A. Biomaterial and Therapeutic Approaches for the Manipulation of Macrophage Phenotype in Peripheral and Central Nerve Repair. Pharmaceutics 2021; 13:2161. [PMID: 34959446 PMCID: PMC8706646 DOI: 10.3390/pharmaceutics13122161] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 12/18/2022] Open
Abstract
Injury to the peripheral or central nervous systems often results in extensive loss of motor and sensory function that can greatly diminish quality of life. In both cases, macrophage infiltration into the injury site plays an integral role in the host tissue inflammatory response. In particular, the temporally related transition of macrophage phenotype between the M1/M2 inflammatory/repair states is critical for successful tissue repair. In recent years, biomaterial implants have emerged as a novel approach to bridge lesion sites and provide a growth-inductive environment for regenerating axons. This has more recently seen these two areas of research increasingly intersecting in the creation of 'immune-modulatory' biomaterials. These synthetic or naturally derived materials are fabricated to drive macrophages towards a pro-repair phenotype. This review considers the macrophage-mediated inflammatory events that occur following nervous tissue injury and outlines the latest developments in biomaterial-based strategies to influence macrophage phenotype and enhance repair.
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Affiliation(s)
- Adrian Dervan
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland; (A.D.); (A.F.); (F.R.A.-G.); (F.J.O.)
- Trinity Centre for Bioengineering, Trinity College Dublin, D02 R590 Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, D02 YN77 Dublin, Ireland
| | - Antonio Franchi
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland; (A.D.); (A.F.); (F.R.A.-G.); (F.J.O.)
- Trinity Centre for Bioengineering, Trinity College Dublin, D02 R590 Dublin, Ireland
| | - Francisco R. Almeida-Gonzalez
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland; (A.D.); (A.F.); (F.R.A.-G.); (F.J.O.)
- Trinity Centre for Bioengineering, Trinity College Dublin, D02 R590 Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, D02 YN77 Dublin, Ireland
| | - Jennifer K. Dowling
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland; (J.K.D.); (O.B.K.); (C.E.M.)
- FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland
| | - Ohemaa B. Kwakyi
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland; (J.K.D.); (O.B.K.); (C.E.M.)
- School of Medicine, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland
| | - Claire E. McCoy
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland; (J.K.D.); (O.B.K.); (C.E.M.)
- FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland
| | - Fergal J. O’Brien
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland; (A.D.); (A.F.); (F.R.A.-G.); (F.J.O.)
- Trinity Centre for Bioengineering, Trinity College Dublin, D02 R590 Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, D02 YN77 Dublin, Ireland
| | - Alan Hibbitts
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, D02 YN77 Dublin, Ireland; (A.D.); (A.F.); (F.R.A.-G.); (F.J.O.)
- Trinity Centre for Bioengineering, Trinity College Dublin, D02 R590 Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, D02 YN77 Dublin, Ireland
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A DAMP-scavenging, IL-10-releasing hydrogel promotes neural regeneration and motor function recovery after spinal cord injury. Biomaterials 2021; 280:121279. [PMID: 34847433 DOI: 10.1016/j.biomaterials.2021.121279] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/16/2021] [Accepted: 11/23/2021] [Indexed: 12/13/2022]
Abstract
Spinal cord injury (SCI) creates an inflammatory microenvironment characterized by damage-associated molecular patterns (DAMPs) and immune cell activation that exacerbate secondary damage and impair neurological recovery. Here we develop an immunoregulatory hydrogel scaffold for treating SCI that scavenges DAMPs and slowly releases the anti-inflammatory cytokine interleukin-10 (IL-10). We created this dual-functional scaffold by modifying a photocrosslinked gelatin hydrogel with the cationic, DAMP-binding polymer poly (amidoamine) and with IL-10, and compared the therapeutic activity of this scaffold with that of gelatin-only, gelatin + poly (amidoamine), and gelatin + IL-10 scaffolds in vitro and in vivo. In vitro, the dual-functional scaffold scavenged anionic DAMPs and exhibited sustained release of IL-10, reduced the proinflammatory responses of macrophages and microglia, and enhanced the neurogenic differentiation of neural stem cells. In a complete transection SCI mouse model, the injected dual-functional scaffold suppressed proinflammatory cytokine production, promoted the M2 macrophage/microglia phenotype, and led to neural regeneration and axon growth without scar formation to a greater extent than the single-function or control scaffolds. This DAMP-scavenging, IL-10-releasing scaffold provides a new strategy for promoting neural regeneration and motor function recovery following severe SCI.
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Kim Y, Roh EJ, Joshi HP, Shin HE, Choi H, Kwon SY, Sohn S, Han I. Bazedoxifene, a Selective Estrogen Receptor Modulator, Promotes Functional Recovery in a Spinal Cord Injury Rat Model. Int J Mol Sci 2021; 22:ijms222011012. [PMID: 34681670 PMCID: PMC8537911 DOI: 10.3390/ijms222011012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 12/14/2022] Open
Abstract
In research on various central nervous system injuries, bazedoxifene acetate (BZA) has shown two main effects: neuroprotection by suppressing the inflammatory response and remyelination by enhancing oligodendrocyte precursor cell differentiation and oligodendrocyte proliferation. We examined the effects of BZA in a rat spinal cord injury (SCI) model. Anti-inflammatory and anti-apoptotic effects were investigated in RAW 264.7 cells, and blood-spinal cord barrier (BSCB) permeability and angiogenesis were evaluated in a human brain endothelial cell line (hCMEC/D3). In vivo experiments were carried out on female Sprague Dawley rats subjected to moderate static compression SCI. The rats were intraperitoneally injected with either vehicle or BZA (1mg/kg pre-SCI and 3 mg/kg for 7 days post-SCI) daily. BZA decreased the lipopolysaccharide-induced production of proinflammatory cytokines and nitric oxide in RAW 264.7 cells and preserved BSCB disruption in hCMEC/D3 cells. In the rats, BZA reduced caspase-3 activity at 1 day post-injury (dpi) and suppressed phosphorylation of MAPK (p38 and ERK) at dpi 2, hence reducing the expression of IL-6, a proinflammatory cytokine. BZA also led to remyelination at dpi 20. BZA contributed to improvements in locomotor recovery after compressive SCI. This evidence suggests that BZA may have therapeutic potential to promote neuroprotection, remyelination, and functional outcomes following SCI.
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Affiliation(s)
- Yiyoung Kim
- School of Medicine, CHA University, CHA Bundang Medical Center, Seongnam-si 13496, Gyeonggi-do, Korea;
| | - Eun Ji Roh
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Gyeonggi-do, Korea; (E.J.R.); (H.E.S.); (H.C.); (S.Y.K.); (S.S.)
| | - Hari Prasad Joshi
- Department of Physiology and Pathophysiology, Spinal Cord Research Centre, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0W2, Canada;
| | - Hae Eun Shin
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Gyeonggi-do, Korea; (E.J.R.); (H.E.S.); (H.C.); (S.Y.K.); (S.S.)
| | - Hyemin Choi
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Gyeonggi-do, Korea; (E.J.R.); (H.E.S.); (H.C.); (S.Y.K.); (S.S.)
| | - Su Yeon Kwon
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Gyeonggi-do, Korea; (E.J.R.); (H.E.S.); (H.C.); (S.Y.K.); (S.S.)
| | - Seil Sohn
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Gyeonggi-do, Korea; (E.J.R.); (H.E.S.); (H.C.); (S.Y.K.); (S.S.)
| | - Inbo Han
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Gyeonggi-do, Korea; (E.J.R.); (H.E.S.); (H.C.); (S.Y.K.); (S.S.)
- Correspondence:
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Zhang H, Yang T. FBXW7alpha Promotes the Recovery of Traumatic Spinal Cord. Curr Mol Med 2021; 20:494-504. [PMID: 31870261 DOI: 10.2174/1566524020666191223164916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/20/2019] [Accepted: 12/12/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND White matter damage and neuronal cell death are incurred by spinal cord injury (SCI). FBXW7α, an important mediator of cell division and growth was investigated to explore its role in repairing the traumatic spinal cord in rats. Underlying mechanisms such as oxidative stress and inflammasomes signaling were also studied. METHODS Spinal cord injury in rats was established by longitudinal surgical incision from the lower to mid-thoracic vertebrae on the backside, followed by 20-g weight placed on the exposed Th12 surface for 30 min. AAV-delivered FBXW7α and -sh-FBXW7α were intrathecally injected into the rat spinal cord. Indices of oxidation, neurotrophic factors, and pyroptosis were measured by Western blot, Elisa, and RT-PCR. RESULTS We found the overexpression of FBXW7α in spinal cord rescue neuronal death triggered by the injury. Specifically, the nutritional condition, oxidative stress, and pyroptosis were improved. A synchronization of BNDF and GDNF expression patterns in various groups indicated the secretion of neurotrophic factors affect the outcome of SCI. The SOD1, CAT, and GSH-px were suppressed after trauma but all restored in response to FBXW7α overexpression. Inflammasomes-activated pyroptosis was incurred after the injury, and relevant biomarkers such as GSDMD, caspase-1, caspase- 11, IL-1β, and IL-18 were down-regulated after the introduction of FBXW7α into the injured cord. Additionally, up-regulating FBXW7α also repaired the mitochondria dysfunction. CONCLUSION Our data indicate FBXW7α probably serves as an important molecular target for the therapy of spinal cord injury.
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Affiliation(s)
- Hong Zhang
- Department of Trauma Center, The First People's Hospital of Lianyungang, Lianyungang City, Jiangsu Province, 222061, China
| | - Tao Yang
- Department of Orthopedics, 4th (Xing Yuan) Hospital of Yulin, Yulin City, Shaanxi Province, 719000, China
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Tejeda G, Ciciriello AJ, Dumont CM. Biomaterial Strategies to Bolster Neural Stem Cell-Mediated Repair of the Central Nervous System. Cells Tissues Organs 2021; 211:655-669. [PMID: 34120118 DOI: 10.1159/000515351] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 02/12/2021] [Indexed: 01/25/2023] Open
Abstract
Stem cell therapies have the potential to not only repair, but to regenerate tissue of the central nervous system (CNS). Recent studies demonstrate that transplanted stem cells can differentiate into neurons and integrate with the intact circuitry after traumatic injury. Unfortunately, the positive findings described in rodent models have not been replicated in clinical trials, where the burden to maintain the cell viability necessary for tissue repair becomes more challenging. Low transplant survival remains the greatest barrier to stem cell-mediated repair of the CNS, often with fewer than 1-2% of the transplanted cells remaining after 1 week. Strategic transplantation parameters, such as injection location, cell concentration, and transplant timing achieve only modest improvements in stem cell transplant survival and appear inconsistent across studies. Biomaterials provide researchers with a means to significantly improve stem cell transplant survival through two mechanisms: (1) a vehicle to deliver and protect the stem cells and (2) a substrate to control the cytotoxic injury environment. These biomaterial strategies can alleviate cell death associated with delivery to the injury and can be used to limit cell death after transplantation by limiting cell exposure to cytotoxic signals. Moreover, it is likely that control of the injury environment with biomaterials will lead to a more reliable support for transplanted cell populations. This review will highlight the challenges associated with cell delivery in the CNS and the advances in biomaterial development and deployment for stem cell therapies necessary to bolster stem cell-mediated repair.
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Affiliation(s)
- Giancarlo Tejeda
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.,Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, Miami, Florida, USA
| | - Andrew J Ciciriello
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.,Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, Miami, Florida, USA
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.,Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, Miami, Florida, USA
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Inyang KE, Folger JK, Laumet G. Can FDA-Approved Immunomodulatory Drugs be Repurposed/Repositioned to Alleviate Chronic Pain? J Neuroimmune Pharmacol 2021; 16:531-547. [PMID: 34041656 DOI: 10.1007/s11481-021-10000-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022]
Abstract
Pain is among the most widespread chronic health condition confronting society today and our inability to manage chronic pain contributes to the opioid abuse epidemic in America. The immune system is known to contribute to acute and chronic pain, but only limited therapeutic treatments such as non-steroid anti-inflammatory drugs have resulted from this knowledge. The last decade has shed light on neuro-immune interactions mediating the development, maintenance, and resolution of chronic pain. Here, we do not aim to perform a comprehensive review of all immune mechanisms involved in chronic pain, but to briefly review the contribution of the main cytokines and immune cells (macrophages, microglia, mast cells and T cells) to chronic pain. Given the urgent need to address the Pain crisis, we provocatively propose to repurpose/reposition FDA-approved immunomodulatory drugs for their potential to alleviate chronic pain. Repositioning or repurposing offers an attractive way to accelerate the arrival of new analgesics.
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Affiliation(s)
| | - Joseph K Folger
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Geoffroy Laumet
- Department of Physiology, Michigan State University, East Lansing, MI, USA.
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38
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Ciciriello AJ, Smith DR, Munsell MK, Boyd SJ, Shea LD, Dumont CM. IL-10 lentivirus-laden hydrogel tubes increase spinal progenitor survival and neuronal differentiation after spinal cord injury. Biotechnol Bioeng 2021; 118:2609-2625. [PMID: 33835500 DOI: 10.1002/bit.27781] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/05/2021] [Accepted: 04/06/2021] [Indexed: 12/12/2022]
Abstract
A complex cellular cascade characterizes the pathophysiological response following spinal cord injury (SCI) limiting regeneration. Biomaterial and stem cell combination therapies together have shown synergistic effects, compared to the independent benefits of each intervention, and represent a promising approach towards regaining function after injury. In this study, we combine our polyethylene glycol (PEG) cell delivery platform with lentiviral-mediated overexpression of the anti-inflammatory cytokine interleukin (IL)-10 to improve mouse embryonic Day 14 (E14) spinal progenitor transplant survival. Immediately following injury in a mouse SCI hemisection model, five PEG tubes were implanted followed by direct injection into the tubes of lentivirus encoding for IL-10. Two weeks after tube implantation, mouse E14 spinal progenitors were injected directly into the integrated tubes, which served as a soft substrate for cell transplantation. Together, the tubes with the IL-10 encoding lentivirus improved E14 spinal progenitor survival, assessed at 2 weeks posttransplantation (4 weeks postinjury). On average, 8.1% of E14 spinal progenitors survived in mice receiving IL-10 lentivirus-laden tubes compared with 0.7% in mice receiving transplants without tubes, an 11.5-fold difference. Surviving E14 spinal progenitors gave rise to neurons when injected into tubes. Axon elongation and remyelination were observed, in addition to a significant increase in functional recovery in mice receiving IL-10 lentivirus-laden tubes with E14 spinal progenitor delivery compared to the injury only control by 4 weeks postinjury. All other conditions did not exhibit increased stepping until 8 or 12 weeks postinjury. This system affords increased control over the transplantation microenvironment, offering the potential to improve stem cell-mediated tissue regeneration.
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Affiliation(s)
- Andrew J Ciciriello
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.,DJTMF Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, Miami, Florida, USA
| | - Dominique R Smith
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Mary K Munsell
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Sydney J Boyd
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA.,Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.,DJTMF Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, Miami, Florida, USA
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39
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Protective Effects of Gynostemma pentaphyllum (var. Ginpent) against Lipopolysaccharide-Induced Inflammation and Motor Alteration in Mice. Molecules 2021; 26:molecules26030570. [PMID: 33499104 PMCID: PMC7865846 DOI: 10.3390/molecules26030570] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 01/12/2021] [Accepted: 01/18/2021] [Indexed: 12/20/2022] Open
Abstract
Gynostemma pentaphyllum (var. Ginpent) (GP) is a variety of Cucurbit with anti-inflammatory and antioxidant effects in patients. In this manuscript, the main components present in the dry extract of GP have been identified using Ultra High Performance Liquid Chromatography quadrupole-time-of-flight mass spectrometry (UHPLC/Q-TOF-MS). In addition, the anti-inflammatory action of GP was evaluated in animal models with acute peripheral inflammation and motor alteration induced by lipopolysaccharide. The results showed that GP dry extract is rich in secondary metabolites with potential antioxidant and anti-inflammatory properties. We found that the treatment with GP induced a recovery of motor function measured with the rotarod test and pole test, and a reduction in inflammatory cytokines such as interleukin-1β and interleukin-6 measured with the ELISA test. The data collected in this study on the effects of GP in in vivo models may help integrate the therapeutic strategies of inflammatory-based disorders.
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40
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Dugan EA, Schachner B, Jergova S, Sagen J. Intensive Locomotor Training Provides Sustained Alleviation of Chronic Spinal Cord Injury-Associated Neuropathic Pain: A Two-Year Pre-Clinical Study. J Neurotrauma 2021; 38:789-802. [PMID: 33218293 DOI: 10.1089/neu.2020.7378] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Neuropathic pain often accompanies the functional deficits associated with spinal cord injury (SCI) and further reduces a patient's quality of life. Clinical and pre-clinical research is beginning to highlight the beneficial role that rehabilitative therapies such as locomotor training can have not only on functional recovery but also on chronic pain management. Our group has previously developed an intensive locomotor training (ILT) treadmill protocol on rats that reduced SCI neuropathic pain symptoms for at least 3 months. We have extended these findings in the current study to evaluate the ability of regular ILT regimen over a 2 year period post-SCI to maintain neuropathic pain reduction. To assess this, the rat clip compression SCI model (T7/8) was used and treadmill training was initiated starting 4 weeks after SCI and continuing through the duration of the study. Results showed continued suppression of SCI neuropathic pain responses (reduced mechanical, heat, and cold hypersensitivity throughout the entire time course of the study). In contrast, non-exercised rats showed consistent and sustained neuropathic pain responses during this period. In addition, prolonged survival and improved locomotor outcomes were observed in rats undergoing ILT as the study longevity progressed. Potential contributory mechanisms underlying beneficial effects of ILT include reduced inflammation and restoration of anti-nociceptive inhibitory processes as indicated by neurochemical assays in spinal tissue of remaining rats at 2 years post-SCI. The benefits of chronic ILT suggest that long-term physical exercise therapy can produce powerful and prolonged management of neuropathic pain, partly through sustained reduction of spinal pathological processes.
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Affiliation(s)
- Elizabeth A Dugan
- The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Benjamin Schachner
- The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Stanislava Jergova
- The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Jacqueline Sagen
- The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
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41
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Chen JY, Fu EJ, Patel PR, Hostetler AJ, Sawan HA, Moss KA, Hocevar SE, Anderson AJ, Chestek CA, Shea LD. Lentiviral Interleukin-10 Gene Therapy Preserves Fine Motor Circuitry and Function After a Cervical Spinal Cord Injury in Male and Female Mice. Neurotherapeutics 2021; 18:503-514. [PMID: 33051853 PMCID: PMC8116384 DOI: 10.1007/s13311-020-00946-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2020] [Indexed: 12/16/2022] Open
Abstract
In mammals, spinal cord injuries often result in muscle paralysis through the apoptosis of lower motor neurons and denervation of neuromuscular junctions. Previous research shows that the inflammatory response to a spinal cord injury can cause additional tissue damage after the initial trauma. To modulate this inflammatory response, we delivered lentiviral anti-inflammatory interleukin-10, via loading onto an implantable biomaterial scaffold, into a left-sided hemisection at the C5 vertebra in mice. We hypothesized that improved behavioral outcomes associated with anti-inflammatory treatment are due to the sparing of fine motor circuit components. We examined behavioral recovery using a ladder beam, tissue sparing using histology, and electromyogram recordings using intraspinal optogenetic stimulation at 2 weeks post-injury. Ladder beam analysis shows interleukin-10 treatment results in significant improvement of behavioral recovery at 2 and 12 weeks post-injury when compared to mice treated with a control virus. Histology shows interleukin-10 results in greater numbers of lower motor neurons, axons, and muscle innervation at 2 weeks post-injury. Furthermore, electromyogram recordings suggest that interleukin-10-treated animals have signal-to-noise ratios and peak-to-peak amplitudes more similar to that of uninjured controls than to that of control injured animals at 2 weeks post-injury. These data show that gene therapy using anti-inflammatory interleukin-10 can significantly reduce tissue damage and subsequent motor deficits after a spinal cord injury. Together, these results suggest that early modulation of the injury response can preserve muscle function with long-lasting benefits.
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Affiliation(s)
- Jessica Y Chen
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA
- Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Emily J Fu
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA
| | - Paras R Patel
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA
| | - Alexander J Hostetler
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA
| | - Hasan A Sawan
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA
| | - Kayla A Moss
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA
| | - Sarah E Hocevar
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA
- Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Aileen J Anderson
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, 92697, USA
| | - Cynthia A Chestek
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA
- Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, 48109, USA
- Robotics Program, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, 1119 Carl A Gerstacker Building, Ann Arbor, MI, 48109, USA.
- Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor, MI, 48109, USA.
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42
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Youngblood R, Flesher CG, Delproposto J, Baker NA, Neeley CK, Li F, Lumeng CN, Shea LD, O'Rourke RW. Regulation of adipose tissue inflammation and systemic metabolism in murine obesity by polymer implants loaded with lentiviral vectors encoding human interleukin-4. Biotechnol Bioeng 2020; 117:3891-3901. [PMID: 32729936 PMCID: PMC8358590 DOI: 10.1002/bit.27523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/26/2020] [Accepted: 07/28/2020] [Indexed: 11/08/2022]
Abstract
Dysfunctional adipose tissue plays a central role in the pathogenesis of the obesity-related metabolic disease, including type 2 diabetes. Targeting adipose tissue using biopolymer implants is a novel therapeutic approach for metabolic disease. We transplanted porous poly(lactide-co-glycolide) (PLG) implants coated with human interleukin-4 (hIL-4)-expressing lentivirus into epididymal white adipose tissue (eWAT) of mice fed a high-fat diet. Tissue and systemic inflammation and metabolism were studied with flow cytometry, immunohistochemistry, quantitative real-time polymerase chain reaction, adipose tissue histology, and in vivo glucose tolerance testing at 2 and 10 weeks of a high-fat diet. PLG implants carrying hIL-4-expressing lentivirus implanted into epididymal white adipose tissue of mice-regulated adipose tissue inflammation, including increased CD3+ CD4+ T-cell frequency, increased eWAT adipocyte hypertrophy, and decreased FASN and ATGL expression, along with reduced fasting blood glucose levels. These effects were observed in early obesity but were not maintained in established obesity. Local delivery of bioimplants loaded with cytokine-expressing lentivirus vectors to adipose tissue influences tissue inflammation and systemic metabolism in early obesity. Further study will be required to show more durable metabolic effects. These data demonstrate that polymer biomaterials implanted into adipose tissue have the potential to modulate local tissue and systemic inflammation and metabolism.
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Affiliation(s)
- Richard Youngblood
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Carmen G Flesher
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan
| | - Jennifer Delproposto
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Michigan
| | - Nicki A Baker
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan
| | - Christopher K Neeley
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan
| | - Fanghua Li
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Carey N Lumeng
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Michigan
- Graduate Program in Immunology, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
- Graduate Program in Cellular and Molecular Biology, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Robert W O'Rourke
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Surgery, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
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43
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Gong Z, Lei D, Wang C, Yu C, Xia K, Shu J, Ying L, Du J, Wang J, Huang X, Ni L, Wang C, Lin J, Li F, You Z, Liang C. Bioactive Elastic Scaffolds Loaded with Neural Stem Cells Promote Rapid Spinal Cord Regeneration. ACS Biomater Sci Eng 2020; 6:6331-6343. [PMID: 33449647 DOI: 10.1021/acsbiomaterials.0c01057] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Despite decades of research, spinal cord injury (SCI) still causes irreparable damage to the human body. Key challenges that hinder the regeneration and extension of neurons following SCI must be overcome, including the overexpressed glial scar formation and strong inflammatory responses in lesion tissue. Transplantation of neural stem cells (NSCs) represents a promising therapeutic method due to its beneficial roles like growth factor secretion and anti-inflammation. However, NSCs usually differentiate into astrocytes, which is considered as one potential limitation of current NSC therapy. Herein, we fabricate an elastic poly(sebacoyl diglyceride) (PSeD) scaffold to mimic the mechanical properties of the natural spinal cord. The PSeD scaffold is coated with poly(sebacoyl diglyceride)-isoleucine-lysine-valine-alanine-valine-serine (PSeD-IKVAVS) to create a bioactive interface. The core point of this topic is divided into two parts. First, PSeD is a bioelastomer and its mechanical properties are similar to those of the natural spinal cord. This feature reduces the direct stimulation to the spinal cord tissue by the elastomer and then reduces the immune response or resistance caused by the host spinal cord tissue. Second, the IKVAVS peptide modifies PSeD to create a bioactive interface to support NSC growth and differentiation. In the in vivo study, the number of CD68-positive macrophages decreased in the PSeD-IKVAVS/NSC group compared to that in the SCI group (20% vs 60%). The low inflammation induced by the scaffold was beneficial to NSCs, resulting in increased locomotor recovery, as indicated by the increased Basso-Beattie-Bresnahan score (5, the average score in the PSeD-IKVAVS/NSC group, vs 2, the average score in the SCI group). Based on the above two characteristics, a PSeD-IKVAVS bioelastomer is fabricated, which provides a beneficial and bioactive microenvironment for NSCs after transplantation.
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Affiliation(s)
- Zhe Gong
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Dong Lei
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Belt and Road Joint Laboratory of Advanced fiber and Low-dimension Materials (Donghua University), College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Chenggui Wang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Chao Yu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Kaishun Xia
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Jiawei Shu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Liwei Ying
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Jiangnan Du
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Jingkai Wang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Xianpeng Huang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Licheng Ni
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Cong Wang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Jingquan Lin
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Fangcai Li
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Zhengwei You
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Belt and Road Joint Laboratory of Advanced fiber and Low-dimension Materials (Donghua University), College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Chengzhen Liang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
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44
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Ciciriello AJ, Smith DR, Munsell MK, Boyd SJ, Shea LD, Dumont CM. Acute Implantation of Aligned Hydrogel Tubes Supports Delayed Spinal Progenitor Implantation. ACS Biomater Sci Eng 2020; 6:5771-5784. [DOI: 10.1021/acsbiomaterials.0c00844] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Andrew J. Ciciriello
- Department of Biomedical Engineering, University of Miami, 1251 Memorial Drive, Coral Gables, Florida 33156, United States
- Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, 1951 NW Seventh Avenue Suite 475, Miami, Florida 33136, United States
| | - Dominique R. Smith
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, United States
| | - Mary K. Munsell
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, United States
| | - Sydney J. Boyd
- Department of Biomedical Engineering, University of Miami, 1251 Memorial Drive, Coral Gables, Florida 33156, United States
| | - Lonnie D. Shea
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, United States
- Department of Chemical Engineering, University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - Courtney M. Dumont
- Department of Biomedical Engineering, University of Miami, 1251 Memorial Drive, Coral Gables, Florida 33156, United States
- Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), University of Miami, 1951 NW Seventh Avenue Suite 475, Miami, Florida 33136, United States
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45
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Alizadeh A, Moradi L, Katebi M, Ai J, Azami M, Moradveisi B, Ostad SN. Delivery of injectable thermo-sensitive hydrogel releasing nerve growth factor for spinal cord regeneration in rat animal model. J Tissue Viability 2020; 29:359-366. [PMID: 32839065 DOI: 10.1016/j.jtv.2020.06.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 06/06/2020] [Accepted: 06/24/2020] [Indexed: 01/11/2023]
Abstract
The main goal of this study was to explore the beneficial effect of nerve growth factor (NGF)-overexpressing of human adipose-derived mesenchymal stem cells (hADSCs) encapsulated in injectable chitosan/β-glycerophosphate/hydroxyethylcellulose (CS/β-GP/HEC) hydrogel for spinal cord regeneration. The CS/β-GP/HEC hydrogel and genetically transduced hADSCs using pseudo-lentiviruses-NGF were prepared. The mechanical properties, morphology and cytotoxicity of the hydrogel were investigated by rheometry, scanning electron microscope (SEM), and MTT assay, respectively. Rats animals were undergone spinal cord injury (SCI), then one-week post-injury, CS/β-GP/HEC hydrogel, transduced hADSCs and transduced hADSCs/CS/β-GP/HEC hydrogel injected into the site of the lesion. Animals with SCI and animals with laminectomy without SCI were considered as negative control and sham groups, respectively. Positive control group received no surgical intervention. At eight weeks post-injection, histological studies indicated a significant increase in cell proliferation, a smaller cavity in size at the SCI site as well as better locomotor functions for transduced hADSCs/CS/β-GP/HEC hydrogel group (P ≤ 0.05) compared to other experimental groups. Our results showed that CS/β-GP/HEC hydrogel in combination with transduced-hADSCs is able to successfully regenerate SCI. These results may be applicable in the selection of the best therapeutic strategy based on gene therapy and tissue engineering for SCI treatment.
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Affiliation(s)
- Akram Alizadeh
- Department of Tissue Engineering and Applied Cell Sciences, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Lida Moradi
- Department of Dermatology, School of Medicine, New York University, USA
| | - Majid Katebi
- Department of Anatomy, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Jafar Ai
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmoud Azami
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Borhan Moradveisi
- Cancer and Immunology Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Seyed Nasser Ostad
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Poisoning and Toxicology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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46
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Chen N, Zhou P, Liu X, Li J, Wan Y, Liu S, Wei F. Overexpression of Rictor in the injured spinal cord promotes functional recovery in a rat model of spinal cord injury. FASEB J 2020; 34:6984-6998. [PMID: 32232913 DOI: 10.1096/fj.201903171r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/26/2020] [Accepted: 03/17/2020] [Indexed: 11/11/2022]
Abstract
Rictor is an essential component that directly activates the mammalian target of rapamycin (mTOR) activity, which contributes to the intrinsic axon growth capacity of adult sensory neurons after injury. However, whether its action also applies to regeneration after spinal cord injury (SCI) remains unknown. In this study, rats were given spinal cord contusion at the T9-10 level to establish the SCI model and were subsequently treated with intraspinal cord injection of a Rictor overexpression lentiviral vector to locally upregulate the Rictor expression in the injured spinal cord. Thereafter, we investigated the therapeutic effects of Rictor overexpression in the injured spinal cords of SCI rats. Rictor overexpression not only significantly attenuated the acute inflammatory response and cell death after SCI but also markedly increased the shift in macrophages around the lesion from the M1 to M2 phenotype compared to those of the control lentiviral vector injection-treated group. Furthermore, Rictor overexpression dramatically increased neurogenesis in the lesion epicenter, subsequently promoting the tissue repair and functional recovery in SCI rats. Interestingly, the mechanism underlying the beneficial effects of Rictor overexpression on SCI may be associated with the Rictor overexpression playing a role in the anti-inflammatory response and driving macrophage polarization toward the M2 phenotype, which benefits resident neuronal and oligodendrocyte survival. Our findings demonstrate that Rictor is an effective target that affects the generation of molecules that inhibit spinal cord regeneration. In conclusion, localized Rictor overexpression represents a promising potential strategy for the repair of SCI.
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Affiliation(s)
- Ningning Chen
- Department of Orthopedics, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Pengxiang Zhou
- Department of Physical Diagnostic, Daqing Longnan Hospital, Daqing, China
| | - Xizhe Liu
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jiachun Li
- Department of Orthopedics, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Yong Wan
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shaoyu Liu
- Department of Orthopedics, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Fuxin Wei
- Department of Orthopedics, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
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Ali SA, Hanks JE, Stebbins AW, Alkhalili O, Cohen ST, Chen JY, Smith DR, Dumont CM, Shea LD, Hogikyan ND, Feldman EL, Brenner MJ. Delivery of Interleukin-4-Encoding Lentivirus Using Multiple-Channel Bridges Enhances Nerve Regeneration. Laryngoscope 2020; 130:2802-2810. [PMID: 32220076 DOI: 10.1002/lary.28629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 01/27/2020] [Accepted: 02/25/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVES/HYPOTHESIS Facial nerve injury is a source of major morbidity. This study investigated the neuroregenerative effects of inducing an anti-inflammatory environment when reconstructing a facial nerve defect with a multichannel bridge containing interleukin-4 (IL-4)-encoding lentivirus. STUDY DESIGN Animal study. METHODS Eighteen adult Sprague-Dawley rats were divided into three groups, all of which sustained a facial nerve gap defect. Group I had reconstruction performed via an IL-4 multichannel bridge, group II had a multichannel bridge with saline placed, and group III had no reconstruction. RESULTS Quantitative histomorphometric data were assessed 10 weeks after injury. On post hoc analysis, the IL-4 bridge group demonstrated superior regeneration compared to bridge alone on fiber density (mean = 2,380 ± 297 vs. 1,680 ± 441 fibers/mm2 , P = .05) and latency time (mean = 2.9 ms ± 0.6 ms vs. 3.6 ms ± 0.3 ms, P < .001). There was significantly greater regeneration in the IL-4 bridge group versus unreconstructed defect for total fiber and density measurements (P ≤ .05). Comparison of facial motor-evoked distal latencies between the IL-4 bridge group versus bridge alone revealed significant electrophysiological improvement at week 8 (P = .02). CONCLUSIONS Inflammation has been implicated in a variety of otolaryngologic disorders. This study demonstrates that placement of a multichannel bridge with lentivirus encoding IL-4 improves regenerative outcomes following facial nerve gap injury in rodents. This effect is likely mediated by promotion of an anti-inflammatory environment, and these findings may inform future therapeutic approaches to facial nerve injury. LEVEL OF EVIDENCE NA Laryngoscope, 2020.
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Affiliation(s)
- S Ahmed Ali
- Department of Otolaryngology-Head and Neck Surgery, Michigan Medicine, Ann Arbor, Michigan
| | - John E Hanks
- Department of Otolaryngology-Head and Neck Surgery, Michigan Medicine, Ann Arbor, Michigan
| | - Aaron W Stebbins
- Department of Otolaryngology-Head and Neck Surgery, Michigan Medicine, Ann Arbor, Michigan
| | - Osama Alkhalili
- Department of Otolaryngology-Head and Neck Surgery, Michigan Medicine, Ann Arbor, Michigan
| | - Samantha T Cohen
- Department of Otolaryngology-Head and Neck Surgery, Michigan Medicine, Ann Arbor, Michigan
| | - Jessica Y Chen
- Department of Biomedical Engineering, Michigan Medicine, Ann Arbor, Michigan
| | - Dominique R Smith
- Department of Biomedical Engineering, Michigan Medicine, Ann Arbor, Michigan
| | - Courtney M Dumont
- Department of Biomedical Engineering, Michigan Medicine, Ann Arbor, Michigan
| | - Lonnie D Shea
- Department of Biomedical Engineering, Michigan Medicine, Ann Arbor, Michigan
| | - Norman D Hogikyan
- Department of Otolaryngology-Head and Neck Surgery, Michigan Medicine, Ann Arbor, Michigan
| | - Eva L Feldman
- Department of Neurology, Michigan Medicine, Ann Arbor, Michigan, U.S.A
| | - Michael J Brenner
- Department of Otolaryngology-Head and Neck Surgery, Michigan Medicine, Ann Arbor, Michigan
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48
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Gong Z, Wang C, Ni L, Ying L, Shu J, Wang J, Yu C, Xia K, Cheng F, Shi K, Xu G, Yu Q, Shen J, Chen Q, Li F, Liang C. An injectable recombinant human milk fat globule-epidermal growth factor 8-loaded copolymer system for spinal cord injury reduces inflammation through NF-κB and neuronal cell death. Cytotherapy 2020; 22:193-203. [PMID: 32173261 DOI: 10.1016/j.jcyt.2020.01.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/19/2020] [Accepted: 01/30/2020] [Indexed: 01/17/2023]
Abstract
Spinal cord injury (SCI) is a common disease and a major cause of paralysis, carrying much burden around the world. Despite the progress made with growth factors therapy, the response rate of acute SCI treatment still remains unsatisfactory, due largely to complex and severe inflammatory reactions. Herein, we prepare a MFG-E8-loaded copolymer system-based anti-inflammation therapy for SCI treatment. It is shown that the MFG-E8-loaded copolymer system can decrease pro-inflammatory cytokine expression and neuron death. In a rat model of crush-caused SCI, the copolymer system shows significant therapeutic efficacy by ameliorating inflammation, decreasing fibrotic scar, promoting myelin regeneration and suppressing overall SCI severity.
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Affiliation(s)
- Zhe Gong
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Chenggui Wang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Licheng Ni
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Liwei Ying
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Jiawei Shu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Jingkai Wang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Chao Yu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Kaishun Xia
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Feng Cheng
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Kesi Shi
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Guoping Xu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China.
| | - Qunfei Yu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China.
| | | | - Qixin Chen
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China.
| | - Fangcai Li
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China.
| | - Chengzhen Liang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China; Orthopedics Research Institute of Zhejiang University, Hangzhou, China.
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49
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Smith DR, Dumont CM, Park J, Ciciriello AJ, Guo A, Tatineni R, Cummings BJ, Anderson AJ, Shea LD. Polycistronic Delivery of IL-10 and NT-3 Promotes Oligodendrocyte Myelination and Functional Recovery in a Mouse Spinal Cord Injury Model. Tissue Eng Part A 2020; 26:672-682. [PMID: 32000627 DOI: 10.1089/ten.tea.2019.0321] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
One million estimated cases of spinal cord injury (SCI) have been reported in the United States and repairing an injury has constituted a difficult clinical challenge. The complex, dynamic, inhibitory microenvironment postinjury, which is characterized by proinflammatory signaling from invading leukocytes and lack of sufficient factors that promote axonal survival and elongation, limits regeneration. Herein, we investigated the delivery of polycistronic vectors, which have the potential to coexpress factors that target distinct barriers to regeneration, from a multiple channel poly(lactide-co-glycolide) (PLG) bridge to enhance spinal cord regeneration. In this study, we investigated polycistronic delivery of IL-10 that targets proinflammatory signaling, and NT-3 that targets axonal survival and elongation. A significant increase was observed in the density of regenerative macrophages for IL-10+NT-3 condition relative to conditions without IL-10. Furthermore, combined delivery of IL-10+NT-3 produced a significant increase of axonal density and notably myelinated axons compared with all other conditions. A significant increase in functional recovery was observed for IL-10+NT-3 delivery at 12 weeks postinjury that was positively correlated to oligodendrocyte myelinated axon density, suggesting oligodendrocyte-mediated myelination as an important target to improve functional recovery. These results further support the use of multiple channel PLG bridges as a growth supportive substrate and platform to deliver bioactive agents to modulate the SCI microenvironment and promote regeneration and functional recovery. Impact statement Spinal cord injury (SCI) results in a complex microenvironment that contains multiple barriers to regeneration and functional recovery. Multiple factors are necessary to address these barriers to regeneration, and polycistronic lentiviral gene therapy represents a strategy to locally express multiple factors simultaneously. A bicistronic vector encoding IL-10 and NT-3 was delivered from a poly(lactide-co-glycolide) bridge, which provides structural support that guides regeneration, resulting in increased axonal growth, myelination, and subsequent functional recovery. These results demonstrate the opportunity of targeting multiple barriers to SCI regeneration for additive effects.
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Affiliation(s)
- Dominique R Smith
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Biomedical Engineering, University of Miami, Coral Gables, Florida.,Biomedical Nanotechnology Institute at University of Miami (BioNIUM), University of Miami, Miami, Florida
| | - Jonghyuck Park
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky.,Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky
| | - Andrew J Ciciriello
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Biomedical Engineering, University of Miami, Coral Gables, Florida
| | - Amina Guo
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Ravindra Tatineni
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Brian J Cummings
- Institute for Memory Impairments and Neurological Disorders (iMIND), University of California, Irvine, California.,Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, California.,Department of Anatomy and Neurobiology, University of California, Irvine, California.,Department of Physical Medicine and Rehabilitation, University of California, Irvine, California
| | - Aileen J Anderson
- Institute for Memory Impairments and Neurological Disorders (iMIND), University of California, Irvine, California.,Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, California.,Department of Anatomy and Neurobiology, University of California, Irvine, California.,Department of Physical Medicine and Rehabilitation, University of California, Irvine, California
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan
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50
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CRISPR, Prime Editing, Optogenetics, and DREADDs: New Therapeutic Approaches Provided by Emerging Technologies in the Treatment of Spinal Cord Injury. Mol Neurobiol 2020; 57:2085-2100. [DOI: 10.1007/s12035-019-01861-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 12/15/2019] [Indexed: 02/07/2023]
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