1
|
Liu H, Yi J, Zhang C, Li Y, Wang Q, Wang S, Dai S, Zheng Z, Jiang T, Gao P, Xue A, Huang Z, Kong F, Wang Y, He B, Guo X, Li Q, Chen J, Yin G, Zhao S. Macrophage GIT1 promotes oligodendrocyte precursor cell differentiation and remyelination after spinal cord injury. Glia 2024; 72:1674-1692. [PMID: 38899731 DOI: 10.1002/glia.24577] [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: 08/29/2023] [Revised: 05/02/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024]
Abstract
Spinal cord injury (SCI) can result in severe motor and sensory deficits, for which currently no effective cure exists. The pathological process underlying this injury is extremely complex and involves many cell types in the central nervous system. In this study, we have uncovered a novel function for macrophage G protein-coupled receptor kinase-interactor 1 (GIT1) in promoting remyelination and functional repair after SCI. Using GIT1flox/flox Lyz2-Cre (GIT1 CKO) mice, we identified that GIT1 deficiency in macrophages led to an increased generation of tumor necrosis factor-alpha (TNFα), reduced proportion of mature oligodendrocytes (mOLs), impaired remyelination, and compromised functional recovery in vivo. These effects in GIT1 CKO mice were reversed with the administration of soluble TNF inhibitor. Moreover, bone marrow transplantation from GIT1 CWT mice reversed adverse outcomes in GIT1 CKO mice, further indicating the role of macrophage GIT1 in modulating spinal cord injury repair. Our in vitro experiments showed that macrophage GIT1 plays a critical role in secreting TNFα and influences the differentiation of oligodendrocyte precursor cells (OPCs) after stimulation with myelin debris. Collectively, our data uncovered a new role of macrophage GIT1 in regulating the transformation of OPCs into mOLs, essential for functional remyelination after SCI, suggesting that macrophage GIT1 could be a promising treatment target of SCI.
Collapse
Affiliation(s)
- Hao Liu
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiang Yi
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Orthopedics, Yancheng Third People's Hospital, Yancheng, Jiangsu, China
| | - Chenxi Zhang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yin Li
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qian Wang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Shenyu Wang
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Siming Dai
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ziyang Zheng
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Tao Jiang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Peng Gao
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ao Xue
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhenfei Huang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Fanqi Kong
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yongxiang Wang
- Department of Orthopedics, Clinical Medical College, Yangzhou University, Yangzhou, China
- Northern Jiangsu People's Hospital, Yangzhou, China
| | - Baorong He
- Department of Spine Surgery, Honghui-hospital, Xi'an Jiaotong Uinversity, School of Medicine, Xi'an, China
| | - Xiaodong Guo
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingqing Li
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jian Chen
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Guoyong Yin
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Shujie Zhao
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Institute of Functional Reconstruction and Rehabilitation, Nanjing, Jiangsu, China
- Spinal Cord Disease Research Center, Nanjing Medical University, Nanjing, Jiangsu, China
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| |
Collapse
|
2
|
Ampuero E, Luarte A, Flores FS, Soto AI, Pino C, Silva V, Erlandsen M, Concha T, Wyneken U. The multifaceted effects of fluoxetine treatment on cognitive functions. Front Pharmacol 2024; 15:1412420. [PMID: 39081952 PMCID: PMC11286485 DOI: 10.3389/fphar.2024.1412420] [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: 04/04/2024] [Accepted: 06/10/2024] [Indexed: 08/02/2024] Open
Abstract
Fluoxetine, the prototypical selective serotonin reuptake inhibitor (SSRI), is widely used to treat major depressive disorder (MDD) and a variety of other central nervous system conditions, primarily due to its established clinical safety profile. Although its efficacy in treating depression is well-recognized, the impact of fluoxetine on cognitive functions remains inconsistent and elusive. In this review, we first examine the well-substantiated biological mechanisms underlying fluoxetine's antidepressant effects, which include serotonin reuptake inhibition and activation of TrkB receptors-key to brain-derived neurotrophic factor (BDNF) signaling. Subsequently, we delve into the cognitive side effects observed in both preclinical and clinical studies, affecting domains such as memory, attention, and executive functions. While certain studies indicate cognitive improvements in patients with underlying disorders, there is also evidence of negative effects, influenced by variables like gender, duration of treatment, age, disease pathology, and the specifics of cognitive testing. Significantly, the negative cognitive outcomes reported in preclinical research often involve healthy, non-diseased animals. This review underscores the necessity for heightened caution in fluoxetine prescription and further investigation into its potentially detrimental cognitive effects, even when used prophylactically.
Collapse
Affiliation(s)
- Estíbaliz Ampuero
- Laboratorio Neurofarmacología del Comportamiento, Facultad de Química y Biología, Universidad de Santiago, Santiago, Chile
| | - Alejandro Luarte
- Laboratorio Neurociencias, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Francisca Sofia Flores
- Laboratorio Neurociencias, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Antonia Ignacia Soto
- Laboratorio Neurociencias, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Catalina Pino
- Laboratorio Neurociencias, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Viviana Silva
- Laboratorio Neurociencias, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Macarena Erlandsen
- Laboratorio Neurociencias, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Teresita Concha
- Laboratorio Neurociencias, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Ursula Wyneken
- Laboratorio Neurociencias, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
- IMPACT, Center of Interventional Medicine for Precision and Advanced Cellular Therapy, Santiago, Chile
| |
Collapse
|
3
|
Kim HW, Wu KLK, Tam KW, Chan YS, Shum DKY. Pericyte derivation and transplantation for blood-CNS barrier reconstitution in CNS disorders. IBRO Neurosci Rep 2024; 16:147-154. [PMID: 39007089 PMCID: PMC11240299 DOI: 10.1016/j.ibneur.2023.12.007] [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: 03/04/2023] [Revised: 12/09/2023] [Accepted: 12/29/2023] [Indexed: 07/16/2024] Open
Abstract
Disruption of the blood-central nervous system barrier (BCB) is increasingly recognized as a pathological factor in diseases and trauma of the central nervous system. Despite the neuropathological impact, current treatment modalities do not target the BCB; strategies to reconstitute the impaired BCB have been restricted to nutritional and dietary remedies. As an integral cell type in the neurovascular unit, pericytes are crucial to the development, maintenance, and repair of the BCB. As such, pericytes are well poised as cellular agents for reconstitution of the impaired BCB. Here, we summarize recent revelations regarding the role of BCB disruption in diseases and trauma of the central nervous system and highlight how pericytes are harnessed to provide targeted therapeutic effect in each case. This review will also address how recent advances in pericyte derivation strategies can serve to overcome practical hurdles in the clinical use of pericytes.
Collapse
Affiliation(s)
- Hyun Woo Kim
- Department of Orthopedics and Traumatology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Kenneth Lap Kei Wu
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Kin-Wai Tam
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Ying-Shing Chan
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory for Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Daisy Kwok-Yan Shum
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory for Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
| |
Collapse
|
4
|
Xiong M, Feng Y, Luo C, Guo J, Zeng J, Deng L, Xiao Q. Teriparatide: an innovative and promising strategy for protecting the blood-spinal cord barrier following spinal cord injury. Front Pharmacol 2024; 15:1386565. [PMID: 38770002 PMCID: PMC11103009 DOI: 10.3389/fphar.2024.1386565] [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: 02/15/2024] [Accepted: 04/22/2024] [Indexed: 05/22/2024] Open
Abstract
The blood-spinal cord barrier (BSCB) is disrupted within minutes of spinal cord injury, leading to increased permeability and secondary spinal cord injury, resulting in more severe neurological damage. The preservation of blood-spinal cord barrier following spinal cord injury plays a crucial role in determining the prognosis. Teriparatide, widely used in clinical treatment for osteoporosis and promoting fracture healing, has been found in our previous study to have the effect of inhibiting the expression of MMP9 and alleviating blood-brain barrier disruption after ischemic stroke, thereby improving neurological damage symptoms. However, there are limited research on whether it has the potential to improve the prognosis of spinal cord injury. This article summarizes the main pathological mechanisms of blood-spinal cord barrier disruption after spinal cord injury and its relationship with Teriparatide, and explores the therapeutic potential of Teriparatide in improving the prognosis of spinal cord injury by reducing blood-spinal cord barrier disruption.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Qiang Xiao
- Department of Orthopedics, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| |
Collapse
|
5
|
Wang J, Ji C, Ye W, Rong Y, Ge X, Wang Z, Tang P, Zhou Z, Luo Y, Cai W. Deubiquitinase UCHL1 promotes angiogenesis and blood-spinal cord barrier function recovery after spinal cord injury by stabilizing Sox17. Cell Mol Life Sci 2024; 81:137. [PMID: 38478109 PMCID: PMC10937794 DOI: 10.1007/s00018-024-05186-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 03/17/2024]
Abstract
Improving the function of the blood-spinal cord barrier (BSCB) benefits the functional recovery of mice following spinal cord injury (SCI). The death of endothelial cells and disruption of the BSCB at the injury site contribute to secondary damage, and the ubiquitin-proteasome system is involved in regulating protein function. However, little is known about the regulation of deubiquitinated enzymes in endothelial cells and their effect on BSCB function after SCI. We observed that Sox17 is predominantly localized in endothelial cells and is significantly upregulated after SCI and in LPS-treated brain microvascular endothelial cells. In vitro Sox17 knockdown attenuated endothelial cell proliferation, migration, and tube formation, while in vivo Sox17 knockdown inhibited endothelial regeneration and barrier recovery, leading to poor functional recovery after SCI. Conversely, in vivo overexpression of Sox17 promoted angiogenesis and functional recovery after injury. Additionally, immunoprecipitation-mass spectrometry revealed the interaction between the deubiquitinase UCHL1 and Sox17, which stabilized Sox17 and influenced angiogenesis and BSCB repair following injury. By generating UCHL1 conditional knockout mice and conducting rescue experiments, we further validated that the deubiquitinase UCHL1 promotes angiogenesis and restoration of BSCB function after injury by stabilizing Sox17. Collectively, our findings present a novel therapeutic target for treating SCI by revealing a potential mechanism for endothelial cell regeneration and BSCB repair after SCI.
Collapse
Affiliation(s)
- Jiaxing Wang
- Department of Orthopedics, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Chengyue Ji
- Department of Orthopedics, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Wu Ye
- Department of Orthopedics, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Yuluo Rong
- Department of Orthopaedics, Centre for Leading Medicine and Advanced Technologies of IHM, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui, China
| | - Xuhui Ge
- Department of Orthopedics, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Zhuanghui Wang
- Department of Orthopedics, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Pengyu Tang
- Department of Orthopedics, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Zheng Zhou
- Department of Emergency Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| | - Yongjun Luo
- Department of Orthopedics, The Fourth Affiliated Hospital of Soochow University, Suzhou, 215123, Jiangsu, China.
| | - Weihua Cai
- Department of Orthopedics, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| |
Collapse
|
6
|
Xu B, Zhang D, Yang B, Chen X, Jin Z, Qin X, Ma G, Sun K, Zhu L, Wei X, Yin H. Emerging trends in the blood spinal-cord barrier: A bibliometric analysis. Medicine (Baltimore) 2024; 103:e37125. [PMID: 38306548 PMCID: PMC10843562 DOI: 10.1097/md.0000000000037125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/10/2024] [Indexed: 02/04/2024] Open
Abstract
BACKGROUND The blood-spinal cord barrier (BSCB) is a unique protective barrier located between the circulatory system and the central nervous system. BSCB plays a vital role in various diseases. However, there is little systematic research and recording in this field by bibliometrics analysis. We aim to visualize this field through bibliometrics to analyze the hotspots and trends of BSCB and in order to facilitate an understanding of future developments in basic and clinical research. METHODS To conduct a bibliometric study of original publications and their references, the keywords Blood Spinal-Cord Barrier and BSCB are searched and filtered from the Web of Science database (2000-2022), focusing on citations, authors, journals, and countries/regions. Additionally, clustering of the references and co-citation analysis was completed, including a total of 1926 articles and comments. RESULTS From the results, 193 authors were identified, among which Sharma Hs played a key role. As far as the analysis result of the clustering of the references is concerned, the most common type in cluster analysis is spinal cord injury (SCI) which is a current and developing research field. The keywords are also the specific content under these clusters. The most influential organization is Univ Calif San Francisco, and "Proceedings of The National Academy of Sciences of The United States of America" magazine is the most cited magazine. CONCLUSION SUBSECTIONS The research on BSCB is booming focusing mainly on "BSCB in SCI" including "activation," "pathway," and "drug delivery" which is also the trend of future research.
Collapse
Affiliation(s)
- Bo Xu
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Dian Zhang
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Bowen Yang
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xin Chen
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhefeng Jin
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaokuan Qin
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Guoliang Ma
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Kai Sun
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Liguo Zhu
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Beijing Key Laboratory of Bone Setting Technology of Traditional Chinese Medicine, Beijing, China
| | - Xu Wei
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - He Yin
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| |
Collapse
|
7
|
Hu Z, Wu T, Zhou Z, Zhang Y, Chen Q, Yao H, Ji M, Shen G, Dong C, Shi C, Huang Z, Jiang N, Han N, Tian X. Asiaticoside Attenuates Blood-Spinal Cord Barrier Disruption by Inhibiting Endoplasmic Reticulum Stress in Pericytes After Spinal Cord Injury. Mol Neurobiol 2024; 61:678-692. [PMID: 37653222 DOI: 10.1007/s12035-023-03605-3] [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: 11/25/2022] [Accepted: 08/16/2023] [Indexed: 09/02/2023]
Abstract
The blood-spinal cord barrier (BSCB) plays a vital role in the recovery of spinal cord function after spinal cord injury (SCI). Pericytes, pluripotent members of the neurovascular unit (NVU), receive signals from neighboring cells and are critical for maintaining CNS function. Therapeutic targets for the BSCB include endothelial cells (ECs) and glial cells, but few drugs target pericytes. This study was designed to explore whether asiaticoside has a positively effect on pericytes and the integrity of the BSCB. In this study, we found that asiaticoside could inhibit the loss of junction proteins just 1 day after SCI in vivo, but our in vitro study showed no significant differences in the expression of endothelial junction proteins between the control and asiaticoside treatment groups. We also found that asiaticoside could inhibit endoplasmic reticulum (ER) stress and pericyte apoptosis, which might be associated with the inhibition of junction protein reduction in ECs. Thus, we investigated the interactions between pericytes and ECs. Our results showed that asiaticoside could decrease the release of matrix metalloproteinase (MMP)-9 in pericytes and therefore upregulate the expression of junction proteins in ECs. Furthermore, the protective effect of asiaticoside on pericytes is related to the inhibition of ER stress via the MAPK signaling pathway. Taken together, our results demonstrate that asiaticoside treatment inhibits BSCB disruption and enhances functional recovery after SCI.
Collapse
Affiliation(s)
- Zhenxin Hu
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Tingting Wu
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Ziheng Zhou
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yu Zhang
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315302, China
| | - Qiyue Chen
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Hanbing Yao
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Mengchu Ji
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Ge Shen
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Chenling Dong
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Chengge Shi
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Zhixian Huang
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, 325035, China
| | - Nizhou Jiang
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Nan Han
- Department of Ultrasonography, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| | - Xiliang Tian
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| |
Collapse
|
8
|
Lee JY, Park CS, Seo KJ, Kim IY, Han S, Youn I, Yune TY. IL-6/JAK2/STAT3 axis mediates neuropathic pain by regulating astrocyte and microglia activation after spinal cord injury. Exp Neurol 2023; 370:114576. [PMID: 37863306 DOI: 10.1016/j.expneurol.2023.114576] [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: 08/20/2023] [Revised: 10/02/2023] [Accepted: 10/16/2023] [Indexed: 10/22/2023]
Abstract
After spinal cord injury (SCI), the control of activated glial cells such as microglia and astrocytes has emerged as a promising strategy for neuropathic pain management. However, signaling mechanism involved in glial activation in the process of neuropathic pain development and maintenance after SCI is not well elucidated. In this study, we investigated the potential role and mechanism of the JAK2/STAT3 pathway associated with glial cell activation in chronic neuropathic pain development and maintenance after SCI. One month after contusive SCI, the activation of JAK2/STAT3 pathway was markedly upregulated in both microglia and astrocyte in nociceptive processing regions of the lumbar spinal cord. In addition, both mechanical allodynia and thermal hyperalgesia was significantly inhibited by a JAK2 inhibitor, AG490. In particular, AG490 treatment inhibited both microglial and astrocyte activation in the lumbar (L) 4-5 dorsal horn and significantly decreased levels of p-p38MAPK, p-ERK and p-JNK, which are known to be activated in microglia (p-p38MAPK and p-ERK) and astrocyte (p-JNK). Experiments using primary cell cultures also revealed that the JAK2/STAT3 pathway promoted microglia and astrocyte activation after lipopolysaccharide stimulation. Furthermore, JAK2/STAT3 signaling and pain behaviors were significantly attenuated when the rats were treated with anti-IL-6 antibody. Finally, minocycline, a tetracycline antibiotic, inhibited IL-6/JAK2/STAT3 signaling pathway in activated glial cells and restored nociceptive thresholds and the hyperresponsiveness of dorsal neurons. These results suggest an important role of the IL-6/JAK2/STAT3 pathway in the activation of microglia and astrocytes and in the maintenance of chronic below-level pain after SCI.
Collapse
Affiliation(s)
- Jee Youn Lee
- Age-Related and Brain Diseases Research Center, School of Medicine, Kyung Hee University, Seoul 02453, Republic of Korea
| | - Chan Sol Park
- Age-Related and Brain Diseases Research Center, School of Medicine, Kyung Hee University, Seoul 02453, Republic of Korea; Department of Biomedical Science, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung Jin Seo
- Age-Related and Brain Diseases Research Center, School of Medicine, Kyung Hee University, Seoul 02453, Republic of Korea; Department of Biomedical Science, Kyung Hee University, Seoul 02447, Republic of Korea
| | - In Yi Kim
- Age-Related and Brain Diseases Research Center, School of Medicine, Kyung Hee University, Seoul 02453, Republic of Korea; Department of Biomedical Science, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sungmin Han
- Biomedical Research Division, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Inchan Youn
- Biomedical Research Division, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Tae Young Yune
- Age-Related and Brain Diseases Research Center, School of Medicine, Kyung Hee University, Seoul 02453, Republic of Korea; Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul, 02453, Republic of Korea; Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea.
| |
Collapse
|
9
|
Gao P, Yi J, Chen W, Gu J, Miao S, Wang X, Huang Y, Jiang T, Li Q, Zhou W, Zhao S, Wu M, Yin G, Chen J. Pericyte-derived exosomal miR-210 improves mitochondrial function and inhibits lipid peroxidation in vascular endothelial cells after traumatic spinal cord injury by activating JAK1/STAT3 signaling pathway. J Nanobiotechnology 2023; 21:452. [PMID: 38012616 PMCID: PMC10680350 DOI: 10.1186/s12951-023-02110-y] [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: 07/03/2023] [Accepted: 09/15/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Spinal cord injury (SCI) remains a significant health concern, with limited available treatment options. This condition poses significant medical, economic, and social challenges. SCI is typically categorized into primary and secondary injuries. Inflammation, oxidative stress, scar formation, and the immune microenvironment impede axon regeneration and subsequent functional restoration. Numerous studies have shown that the destruction of the blood-brain barrier (BBB) and microvessels is a crucial factor in severe secondary injury. Additionally, reactive oxygen species (ROS)-induced lipid peroxidation significantly contributes to endothelial cell death. Pericytes are essential constituents of the BBB that share the basement membrane with endothelial cells and astrocytes. They play a significant role in the establishment and maintenance of BBB. RESULTS Immunofluorescence staining at different time points revealed a consistent correlation between pericyte coverage and angiogenesis, suggesting that pericytes promote vascular repair via paracrine signaling. Pericytes undergo alterations in cellular morphology and the transcriptome when exposed to hypoxic conditions, potentially promoting angiogenesis. We simulated an early ischemia-hypoxic environment following SCI using glucose and oxygen deprivation and BBB models. Co-culturing pericytes with endothelial cells improved barrier function compared to the control group. However, this enhancement was reduced by the exosome inhibitor, GW4869. In vivo injection of exosomes improved BBB integrity and promoted motor function recovery in mice following SCI. Subsequently, we found that pericyte-derived exosomes exhibited significant miR-210-5p expression based on sequencing analysis. Therefore, we performed a series of gain- and loss-of-function experiments in vitro. CONCLUSION Our findings suggest that miR-210-5p regulates endothelial barrier function by inhibiting JAK1/STAT3 signaling. This process is achieved by regulating lipid peroxidation levels and improving mitochondrial function, suggesting a potential mechanism for restoration of the blood-spinal cord barrier (BSCB) after SCI.
Collapse
Affiliation(s)
- Peng Gao
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Jiang Yi
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Wenjun Chen
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
- Department of Orthopedic, Changzheng Hospital, No. 415 Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Jun Gu
- Department of Orthopedic, Wuxi Xishan People's Hospital, No. 1128 Dacheng Road, Wuxi, 214105, People's Republic of China
| | - Sheng Miao
- Department of Orthopedic, Suqian First People's Hospital, No. 120 Suzhi Road, Suqian, 223812, People's Republic of China
| | - Xiaowei Wang
- Department of Orthopedic, Maanshan People's Hospital, No. 45 Hubei Road, Maanshan, 243000, Anhui, People's Republic of China
| | - Yifan Huang
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Tao Jiang
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Qingqing Li
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Wei Zhou
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Shujie Zhao
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
| | - Mengyuan Wu
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
| | - Guoyong Yin
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
| | - Jian Chen
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
| |
Collapse
|
10
|
Abbaszadeh F, Jorjani M, Joghataei MT, Raminfard S, Mehrabi S. Astaxanthin ameliorates spinal cord edema and astrocyte activation via suppression of HMGB1/TLR4/NF-κB signaling pathway in a rat model of spinal cord injury. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:3075-3086. [PMID: 37145127 DOI: 10.1007/s00210-023-02512-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 04/25/2023] [Indexed: 05/06/2023]
Abstract
Spinal cord edema is a quick-onset phenomenon with long-term effects. This complication is associated with inflammatory responses, as well as poor motor function. No effective treatment has been developed against spinal edema, which urges the need to provide novel therapies. Astaxanthin (AST) is a fat-soluble carotenoid with anti-inflammatory effects and a promising candidate for treating neurological disorders. This study aimed to investigate the underlying mechanism of AST on the inhibition of spinal cord edema, astrocyte activation, and reduction of inflammatory responsesin a rat compression spinal cord injury (SCI) model. Male rats underwent laminectomy at thoracic 8-9, and the SCI model was induced using an aneurysm clip. After SCI, rats received dimethyl sulfoxide or AST via intrathecal injection. The effects of AST were examined on the motor function, spinal cord edema, integrity of blood-spinal cord barrier (BSCB), and expression of high mobility group box 1 (HMGB1), toll-like receptor 4 (TLR4), nuclear factor-kappa B (NF-κB), glial fibrillary acidic protein (GFAP), and aquaporin-4 (AQP4), and matrix metallopeptidase- 9 (MMP-9) post-SCI. We showed that AST potentially improved the recovery of motor function and inhibited the spinal cord edema via maintaining the integrity of BSCB, reducing the expression of HMGB1, TLR4, and NF-κB, MMP-9 as well as downregulation of astrocyte activation (GFAP) and AQP4 expression. AST improves motor function and reduces edema and inflammatory responses in the spinal tissue. These effects are mediated by suppression of the HMGB1/TLR4/NF-κB signaling pathway, suppressing post-SCI astrocyte activation, and decreasing AQP4 and MMP-9 expression.
Collapse
Affiliation(s)
- Fatemeh Abbaszadeh
- Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Science, Tehran, Iran
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoumeh Jorjani
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mohammad Taghi Joghataei
- Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Science, Tehran, Iran.
- Department of Innovation in Medical Education, Faculty of Medicine, Ottawa University, Ottawa, Canada.
| | - Samira Raminfard
- Neuroimaging and Analysis Group, Research Center for Molecular and Cellular Imaging, Advanced Medical Technologies and Equipment Institue, Tehran University of Medical Sciences, Tehran, Iran
| | - Soraya Mehrabi
- Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Science, Tehran, Iran
| |
Collapse
|
11
|
Rahmanian M, Ghahremani A, Kesharwani P, Oroojalian F, Sahebkar A. Nanomedicine innovations in spinal cord injury management: Bridging the gap. ENVIRONMENTAL RESEARCH 2023; 235:116563. [PMID: 37423366 DOI: 10.1016/j.envres.2023.116563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/24/2023] [Accepted: 07/04/2023] [Indexed: 07/11/2023]
Abstract
Spinal cord injury (SCI) has devastating effects on a person's physical, social, and professional well-being. It is a life-altering neurological condition that significantly impacts individuals and their caregivers on a socioeconomic level. Recent advancements in medical therapy have greatly improved the diagnosis, stability, survival rates, and overall well-being of SCI patients. However, there are still limited options available for enhancing neurological outcomes in these patients. The complex pathophysiology of SCI, along with the numerous biochemical and physiological changes that occur in the damaged spinal cord, contribute to this gradual improvement. Currently, there are no therapies that offer the possibility of recovery for SCI, although several therapeutic approaches are being developed. However, these therapies are still in the early stages and have not yet demonstrated effectiveness in repairing the damaged fibers, which hinders cellular regeneration and the full restoration of motor and sensory functions. Considering the importance of nanotechnology and tissue engineering in treating neural tissue injuries, this review focuses on the latest advancements in nanotechnology for SCI therapy and tissue healing. It examines research articles from the PubMed database that specifically address SCI in the field of tissue engineering, with an emphasis on nanotechnology as a therapeutic approach. The review evaluates the biomaterials used for treating this condition and the techniques employed to create nanostructured biomaterials.
Collapse
Affiliation(s)
- Mohsen Rahmanian
- School of Medicine, North Khorasan University of Medical Sciences, Bojnord, Iran
| | - Amirali Ghahremani
- Department of Neurology, North Khorasan University of Medical Sciences, Bojnord, Iran
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India; Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.
| | - Fatemeh Oroojalian
- Department of Advanced Technologies, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran; Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran.
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| |
Collapse
|
12
|
Shu J, Wang C, Tao Y, Wang S, Cheng F, Zhang Y, Shi K, Xia K, Wang R, Wang J, Yu C, Chen J, Huang X, Xu H, Zhou X, Wu H, Liang C, Chen Q, Yan S, Li F. Thermosensitive hydrogel-based GPR124 delivery strategy for rebuilding blood-spinal cord barrier. Bioeng Transl Med 2023; 8:e10561. [PMID: 37693060 PMCID: PMC10486335 DOI: 10.1002/btm2.10561] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 05/20/2023] [Accepted: 05/25/2023] [Indexed: 09/12/2023] Open
Abstract
Spinal cord injury (SCI) causes blood-spinal cord barrier (BSCB) disruption, leading to secondary damage, such as hemorrhagic infiltration, inflammatory response, and neuronal cell death. It is of great significance to rebuild the BSCB at the early stage of SCI to alleviate the secondary injury for better prognosis. Yet, current research involved in the reconstruction of BSCB is insufficient. Accordingly, we provide a thermosensitive hydrogel-based G protein-coupled receptor 124 (GPR124) delivery strategy for rebuilding BSCB. Herein, we firstly found that the expression of GPR124 decreased post-SCI and demonstrated that treatment with recombinant GPR124 could partially alleviate the disruption of BSCB post-SCI by restoring tight junctions (TJs) and promoting migration and tube formation of endothelial cells. Interestingly, GPR124 could also boost the energy metabolism of endothelial cells. However, the absence of physicochemical stability restricted the wide usage of GPR124. Hence, we fabricated a thermosensitive heparin-poloxamer (HP) hydrogel that demonstrated sustained GPR124 production and maintained the bioactivity of GPR124 (HP@124) for rebuilding the BSCB and eventually enhancing functional motor recovery post-SCI. HP@124 hydrogel can encapsulate GPR124 at the lesion site by injection, providing prolonged release, preserving wounded tissues, and filling injured tissue cavities. Consequently, it induces synergistically efficient integrated regulation by blocking BSCB rupture, decreasing fibrotic scar formation, minimizing inflammatory response, boosting remyelination, and regenerating axons. Mechanistically, giving GPR124 activates energy metabolism via elevating the expression of phosphoenolpyruvate carboxykinase 2 (PCK2), and eventually restores the poor state of endothelial cells. This research demonstrated that early intervention by combining GPR124 with bioactive multifunctional hydrogel may have tremendous promise for restoring locomotor recovery in patients with central nervous system disorders, in addition to a translational approach for the medical therapy of SCI.
Collapse
Affiliation(s)
- Jiawei Shu
- International Institutes of MedicineThe Fourth Affiliated Hospital, Zhejiang University School of MedicineYiwuZhejiangPeople's Republic of China
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Chenggui Wang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouZhejiangPeople's Republic of China
| | - Yiqing Tao
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Shaoke Wang
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Feng Cheng
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Yuang Zhang
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Kesi Shi
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Kaishun Xia
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Ronghao Wang
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Jingkai Wang
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Chao Yu
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Jiangjie Chen
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Xianpeng Huang
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Haibin Xu
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Xiaopeng Zhou
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Haobo Wu
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Chengzhen Liang
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Qixin Chen
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Shigui Yan
- International Institutes of MedicineThe Fourth Affiliated Hospital, Zhejiang University School of MedicineYiwuZhejiangPeople's Republic of China
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| | - Fangcai Li
- Department of Orthopedics SurgeryThe Second Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Orthopedics Research Institute of Zhejiang University, Zhejiang UniversityHangzhouZhejiangPeople's Republic of China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang ProvinceHangzhouZhejiangPeople's Republic of China
| |
Collapse
|
13
|
Zhou R, Li J, Chen Z, Wang R, Shen Y, Zhang R, Zhou F, Zhang Y. Pathological hemodynamic changes and leukocyte transmigration disrupt the blood-spinal cord barrier after spinal cord injury. J Neuroinflammation 2023; 20:118. [PMID: 37210532 DOI: 10.1186/s12974-023-02787-w] [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: 09/23/2022] [Accepted: 04/21/2023] [Indexed: 05/22/2023] Open
Abstract
BACKGROUND Blood-spinal cord barrier (BSCB) disruption is a key event after spinal cord injury (SCI), which permits unfavorable blood-derived substances to enter the neural tissue and exacerbates secondary injury. However, limited mechanical impact is usually followed by a large-scale BSCB disruption in SCI. How the BSCB disruption is propagated along the spinal cord in the acute period of SCI remains unclear. Thus, strategies for appropriate clinical treatment are lacking. METHODS A SCI contusion mouse model was established in wild-type and LysM-YFP transgenic mice. In vivo two-photon imaging and complementary studies, including immunostaining, capillary western blotting, and whole-tissue clearing, were performed to monitor BSCB disruption and verify relevant injury mechanisms. Clinically applied target temperature management (TTM) to reduce the core body temperature was tested for the efficacy of attenuating BSCB disruption. RESULTS Barrier leakage was detected in the contusion epicenter within several minutes and then gradually spread to more distant regions. Membrane expression of the main tight junction proteins remained unaltered at four hours post-injury. Many junctional gaps emerged in paracellular tight junctions at the small vessels from multiple spinal cord segments at 15 min post-injury. A previously unnoticed pathological hemodynamic change was observed in the venous system, which likely facilitated gap formation and barrier leakage by exerting abnormal physical force on the BSCB. Leukocytes were quickly initiated to transverse through the BSCB within 30 min post-SCI, actively facilitating gap formation and barrier leakage. Inducing leukocyte transmigration generated gap formation and barrier leakage. Furthermore, pharmacological alleviation of pathological hemodynamic changes or leukocyte transmigration reduced gap formation and barrier leakage. TTM had very little protective effects on the BSCB in the early period of SCI other than partially alleviating leukocyte infiltration. CONCLUSIONS Our data show that BSCB disruption in the early period of SCI is a secondary change, which is indicated by widespread gap formation in tight junctions. Pathological hemodynamic changes and leukocyte transmigration contribute to gap formation, which could advance our understanding of BSCB disruption and provide new clues for potential treatment strategies. Ultimately, TTM is inadequate to protect the BSCB in early SCI.
Collapse
Affiliation(s)
- Rubing Zhou
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing, 100191, People's Republic of China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Health Commission of P.R. China, Beijing, 100191, People's Republic of China
- PKU-IDG/McGovern Institute for Brain Research, Beijing, 100871, People's Republic of China
| | - Junzhao Li
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing, 100191, People's Republic of China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Health Commission of P.R. China, Beijing, 100191, People's Republic of China
- PKU-IDG/McGovern Institute for Brain Research, Beijing, 100871, People's Republic of China
| | - Zhengyang Chen
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
| | - Ruideng Wang
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China
| | - Yin Shen
- Eye Center, Renmin Hospital of Wuhan University, Hubei, Wuhan, 430060, People's Republic of China
| | - Rong Zhang
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing, 100191, People's Republic of China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Health Commission of P.R. China, Beijing, 100191, People's Republic of China
- PKU-IDG/McGovern Institute for Brain Research, Beijing, 100871, People's Republic of China
| | - Fang Zhou
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, People's Republic of China.
| | - Yong Zhang
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing, 100191, People's Republic of China.
- Key Laboratory for Neuroscience, Ministry of Education of China and National Health Commission of P.R. China, Beijing, 100191, People's Republic of China.
- PKU-IDG/McGovern Institute for Brain Research, Beijing, 100871, People's Republic of China.
| |
Collapse
|
14
|
Jiang T, Qin T, Gao P, Tao Z, Wang X, Wu M, Gu J, Chu B, Zheng Z, Yi J, Xu T, Huang Y, Liu H, Zhao S, Ren Y, Chen J, Yin G. SIRT1 attenuates blood-spinal cord barrier disruption after spinal cord injury by deacetylating p66Shc. Redox Biol 2023; 60:102615. [PMID: 36716673 PMCID: PMC9900454 DOI: 10.1016/j.redox.2023.102615] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/12/2023] [Accepted: 01/23/2023] [Indexed: 01/26/2023] Open
Abstract
Disruption of the blood-spinal cord barrier (BSCB) leads to inflammatory cell infiltration and neural cell death, thus, contributing to poor functional recovery after spinal cord injury (SCI). Previous studies have suggested that Sirtuin 1 (SIRT1), an NAD+-dependent class III histone deacetylase, is abundantly expressed in endothelial cells and promotes endothelial homeostasis. However, the role of SIRT1 in BSCB function after SCI remains poorly defined. Here, we report that SIRT1 is highly expressed in spinal cord endothelial cells, and its expression significantly decreases after SCI. Using endothelial cell-specific SIRT1 knockout mice, we observed that endothelial cell-specific knockout of SIRT1 aggravated BSCB disruption, thus, resulting in widespread inflammation, neural cell death and poor functional recovery after SCI. In contrast, activation of SIRT1 by the agonist SRT1720 had beneficial effects. In vitro, knockdown of SIRT1 exacerbated IL-1β-induced endothelial barrier disruption in bEnd.3 cells, whereas overexpression of SIRT1 was protective. Using RNA-seq and IP/MS analysis, we identified p66Shc, a redox protein, as the potential target of SIRT1. Further studies demonstrated that SIRT1 interacts with and deacetylates p66Shc, thereby attenuating oxidative stress and protecting endothelial barrier function. Overall, our results indicate that SIRT1 decreases endothelial ROS production and attenuates BSCB disruption by deacetylating p66Shc after SCI, and suggest that SIRT1 activation has potential as a therapeutic approach to promote functional recovery against BSCB disruption following SCI.
Collapse
Affiliation(s)
- Tao Jiang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Tao Qin
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Peng Gao
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Zhiwen Tao
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Xiaowei Wang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Mengyuan Wu
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Jun Gu
- Department of Orthopedics, Xishan People's Hospital, Wuxi, 214000, Jiangsu, China
| | - Bo Chu
- Department of Orthopedics, Xishan People's Hospital, Wuxi, 214000, Jiangsu, China
| | - Ziyang Zheng
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Jiang Yi
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Tao Xu
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Yifan Huang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Hao Liu
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Shujie Zhao
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| | - Yongxin Ren
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| | - Jian Chen
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| | - Guoyong Yin
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| |
Collapse
|
15
|
Xin W, Baokun Z, Zhiheng C, Qiang S, Erzhu Y, Jianguang X, Xiaofeng L. Biodegradable bilayer hydrogel membranes loaded with bazedoxifene attenuate blood-spinal cord barrier disruption via the NF-κB pathway after acute spinal cord injury. Acta Biomater 2023; 159:140-155. [PMID: 36736849 DOI: 10.1016/j.actbio.2023.01.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023]
Abstract
After spinal cord injury (SCI), blood-spinal cord barrier (BSCB) disruption and hemorrhage lead to blood cell infiltration and progressive secondary injuries. Therefore, early restoration of the BSCB represents a key step in the treatment of SCI. Bazedoxifene (BZA), a third-generation estrogen receptor modulator, has recently been reported to inhibit inflammation and alleviate blood-brain barrier disruption caused by traumatic brain injury, attracting great interest in the field of central nervous system injury and repair. However, whether BZA can attenuate BSCB disruption and contribute to SCI repair remains unknown. Here, we developed a new type of biomaterial carrier and constructed a BZA-loaded HSPT (hyaluronic acid (HA), sodium alginate (SA), polyvinyl alcohol (PVA), tetramethylpropane (TPA) material construction) (HSPT@Be) system to effectively deliver BZA to the site of SCI. We found that HSPT@Be could significantly reduce inflammation in the spinal cord in SCI rats and attenuate BSCB disruption by providing covering scaffold, inhibiting oxidative stress, and upregulating tight junction proteins, which was mediated by regulation of the NF-κB/MMP signaling pathway. Importantly, functional assessment showed the evident improvement of behavioral functions in the HSPT@Be-treated SCI rats. These results indicated that HSPT@Be can attenuate BSCB disruption via the NF-κB pathway after SCI, shedding light on its potential therapeutic benefit for SCI. STATEMENT OF SIGNIFICANCE: After spinal cord injury, blood-spinal cord barrier disruption and hemorrhage lead to blood cell infiltration and progressive secondary injuries. Bazedoxifene has recently been reported to inhibit inflammation and alleviate blood-brain barrier disruption caused by traumatic brain injury. However, whether BZA can attenuate BSCB disruption and contribute to SCI repair remains unknown. In this study, we developed a new type of biomaterial carrier and constructed a bazedoxifene-loaded HSPT (HSPT@Be) system to efficiently treat SCI. HSPT@Be could provide protective coverage, inhibit oxidative stress, and upregulate tight junction proteins through NF-κB/MMP pathway both in vivo and in vitro, therefore attenuating BSCB disruption. Our study fills the application gap of biomaterials in BSCB restoration.
Collapse
Affiliation(s)
- Wang Xin
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Zhang Baokun
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Chen Zhiheng
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Shi Qiang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Yang Erzhu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Xu Jianguang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Lian Xiaofeng
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| |
Collapse
|
16
|
Qu K, Yan F, Qin X, Zhang K, He W, Dong M, Wu G. Mitochondrial dysfunction in vascular endothelial cells and its role in atherosclerosis. Front Physiol 2022; 13:1084604. [PMID: 36605901 PMCID: PMC9807884 DOI: 10.3389/fphys.2022.1084604] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022] Open
Abstract
The mitochondria are essential organelles that generate large amounts of ATP via the electron transport chain (ECT). Mitochondrial dysfunction causes reactive oxygen species accumulation, energy stress, and cell death. Endothelial mitochondrial dysfunction is an important factor causing abnormal function of the endothelium, which plays a central role during atherosclerosis development. Atherosclerosis-related risk factors, including high glucose levels, hypertension, ischemia, hypoxia, and diabetes, promote mitochondrial dysfunction in endothelial cells. This review summarizes the physiological and pathophysiological roles of endothelial mitochondria in endothelial function and atherosclerosis.
Collapse
Affiliation(s)
- Kai Qu
- Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing, China,College of Bioengineering Chongqing University, Chongqing, China
| | - Fang Yan
- Department of Geriatrics, Geriatric Diseases Institute of Chengdu, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China,Center for Medicine Research and Translation, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China
| | - Xian Qin
- Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing, China,College of Bioengineering Chongqing University, Chongqing, China
| | - Kun Zhang
- Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing, China,College of Bioengineering Chongqing University, Chongqing, China
| | - Wen He
- Department of Geriatrics, Clinical trial center, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China
| | - Mingqing Dong
- Center for Medicine Research and Translation, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China,*Correspondence: Mingqing Dong, ; Guicheng Wu,
| | - Guicheng Wu
- Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing, China,*Correspondence: Mingqing Dong, ; Guicheng Wu,
| |
Collapse
|
17
|
Challa SR, Nalamolu KR, Fornal CA, Wang BC, Martin RC, Olson EA, Ujjainwala AL, Pinson DM, Klopfenstein JD, Veeravalli KK. Therapeutic efficacy of matrix metalloproteinase-12 suppression on neurological recovery after ischemic stroke: Optimal treatment timing and duration. Front Neurosci 2022; 16:1012812. [PMID: 36267234 PMCID: PMC9577328 DOI: 10.3389/fnins.2022.1012812] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/02/2022] [Indexed: 02/03/2023] Open
Abstract
We recently showed that the post-ischemic induction of matrix metalloproteinase-12 (MMP-12) in the brain degrades tight junction proteins, increases MMP-9 and TNFα expression, and contributes to the blood-brain barrier (BBB) disruption, apoptosis, demyelination, and infarct volume development. The objectives of this study were to (1) determine the effect of MMP-12 suppression by shRNA-mediated gene silencing on neurological/functional recovery, (2) establish the optimal timing of MMP-12shRNA treatment that provides maximum therapeutic benefit, (3) compare the effectiveness of acute versus chronic MMP-12 suppression, and (4) evaluate potential sex-related differences in treatment outcomes. Young male and female Sprague-Dawley rats were subjected to transient middle cerebral artery occlusion and reperfusion. Cohorts of rats were administered either MMP-12shRNA or scrambled shRNA sequence (control) expressing plasmids (1 mg/kg; i.v.) formulated as nanoparticles. At designated time points after reperfusion, rats from various groups were subjected to a battery of neurological tests to assess their reflex, balance, sensory, and motor functions. Suppression of MMP-12 promoted the neurological recovery of stroke-induced male and female rats, although the effect was less apparent in females. Immediate treatment after reperfusion resulted in a better recovery of sensory and motor function than delayed treatments. Chronic MMP-12 suppression neither enhanced nor diminished the therapeutic effects of acute MMP-12 suppression, indicating that a single dose of plasmid may be sufficient. We conclude that suppressing MMP-12 after an ischemic stroke is a promising therapeutic strategy for promoting the recovery of neurological function.
Collapse
Affiliation(s)
- Siva Reddy Challa
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,Department of Pharmacology, KVSR Siddhartha College of Pharmaceutical Sciences, Vijayawada, India
| | - Koteswara Rao Nalamolu
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Casimir A. Fornal
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Billy C. Wang
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,Department of Pediatrics, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,Children’s Hospital of Illinois, OSF HealthCare Saint Francis Medical Center, Peoria, IL, United States
| | - Ryan C. Martin
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Elsa A. Olson
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Ammar L. Ujjainwala
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - David M. Pinson
- Department of Health Sciences Education and Pathology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Jeffrey D. Klopfenstein
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,Department of Neurosurgery, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,OSF HealthCare Saint Francis Medical Center, Illinois Neurological Institute, Peoria, IL, United States
| | - Krishna Kumar Veeravalli
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,Department of Pediatrics, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,Department of Neurosurgery, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,Department of Neurology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States,*Correspondence: Krishna Kumar Veeravalli,
| |
Collapse
|
18
|
Zhao C, Zhou T, Zhao X, Pang Y, Li W, Fan B, Li M, Liu X, Ma L, Zhang J, Sun C, Shen W, Kong X, Yao X, Feng S. Delayed administration of nafamostat mesylate inhibits thrombin-mediated blood-spinal cord barrier breakdown during acute spinal cord injury in rats. J Neuroinflammation 2022; 19:189. [PMID: 35842640 PMCID: PMC9287720 DOI: 10.1186/s12974-022-02531-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 06/15/2022] [Indexed: 01/10/2023] Open
Abstract
Background Nafamostat mesylate (nafamostat, NM) is an FDA-approved serine protease inhibitor that exerts anti-neuroinflammation and neuroprotective effects following rat spinal cord injury (SCI). However, clinical translation of nafamostat has been limited by an unclear administration time window and mechanism of action. Methods Time to first dose of nafamostat administration was tested on rats after contusive SCI. The optimal time window of nafamostat was screened by evaluating hindlimb locomotion and electrophysiology. As nafamostat is a serine protease inhibitor known to target thrombin, we used argatroban (Arg), a thrombin-specific inhibitor, as a positive control in the time window experiments. Western blot and immunofluorescence of thrombin expression level and its enzymatic activity were assayed at different time points, as well its receptor, the protease activated receptor 1 (PAR1) and downstream protein matrix metalloproteinase-9 (MMP9). Blood–spinal cord barrier (BSCB) permeability leakage indicator Evans Blue and fibrinogen were analyzed along these time points. The infiltration of peripheral inflammatory cell was observed by immunofluorescence. Results The optimal administration time window of nafamostat was 2–12 h post-injury. Argatroban, the thrombin-specific inhibitor, had a similar pattern. Thrombin expression peaked at 12 h and returned to normal level at 7 days post-SCI. PAR1, the thrombin receptor, and MMP9 were significantly upregulated after SCI. The most significant increase of thrombin expression was detected in vascular endothelial cells (ECs). Nafamostat and argatroban significantly downregulated thrombin and MMP9 expression as well as thrombin activity in the spinal cord. Nafamostat inhibited thrombin enrichment in endothelial cells. Nafamostat administration at 2–12 h after SCI inhibited the leakage of Evans Blue in the epicenter and upregulated tight junction proteins (TJPs) expression. Nafamostat administration 8 h post-SCI effectively inhibited the infiltration of peripheral macrophages and neutrophils to the injury site. Conclusions Our study provides preclinical information of nafamostat about the administration time window of 2–12 h post-injury in contusive SCI. We revealed that nafamostat functions through inhibiting the thrombin-mediated BSCB breakdown and subsequent peripheral immune cells infiltration. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02531-w.
Collapse
Affiliation(s)
- Chenxi Zhao
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China.,Department of Orthopedics, Orthopedic Research Center of Shandong University, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Tiangang Zhou
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Xiaoqing Zhao
- Department of Orthopedics, Orthopedic Research Center of Shandong University, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yilin Pang
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Wenxiang Li
- Department of Orthopedics, Orthopedic Research Center of Shandong University, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Baoyou Fan
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Ming Li
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Xinjie Liu
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Lei Ma
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Jiawei Zhang
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Chao Sun
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Wenyuan Shen
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China
| | - Xiaohong Kong
- Department of Orthopedics, Orthopedic Research Center of Shandong University, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xue Yao
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China. .,Department of Orthopedics, Orthopedic Research Center of Shandong University, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China.
| | - Shiqing Feng
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, China. .,Department of Orthopedics, Orthopedic Research Center of Shandong University, Cheeloo College of Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China.
| |
Collapse
|
19
|
Lu X, Lv C, Zhao Y, Wang Y, Li Y, Ji C, Wang Z, Ye W, Yu S, Bai J, Cai W. TSG-6 released from adipose stem cells-derived small extracellular vesicle protects against spinal cord ischemia reperfusion injury by inhibiting endoplasmic reticulum stress. Stem Cell Res Ther 2022; 13:291. [PMID: 35831906 PMCID: PMC9281104 DOI: 10.1186/s13287-022-02963-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 06/12/2022] [Indexed: 11/30/2022] Open
Abstract
Background Spinal cord ischemia reperfusion injury (SCIRI) is a complication of aortic aneurysm repair or spinal cord surgery that is associated with permanent neurological deficits. Mesenchymal stem cell (MSC)-derived small extracellular vesicles (sEVs) have been shown to be potential therapeutic options for improving motor functions after SCIRI. Due to their easy access and multi-directional differentiation potential, adipose‐derived stem cells (ADSCs) are preferable for this application. However, the effects of ADSC-derived sEVs (ADSC-sEVs) on SCIRI have not been reported. Results We found that ADSC-sEVs inhibited SCIRI-induced neuronal apoptosis, degradation of tight junction proteins and suppressed endoplasmic reticulum (ER) stress. However, in the presence of the ER stress inducer, tunicamycin, its anti-apoptotic and blood–spinal cord barrier (BSCB) protective effects were significantly reversed. We found that ADSC-sEVs contain tumor necrosis factor (TNF)-stimulated gene-6 (TSG-6) whose overexpression inhibited ER stress in vivo by modulating the PI3K/AKT pathway. Conclusions ADSC-sEVs inhibit neuronal apoptosis and BSCB disruption in SCIRI by transmitting TSG-6, which suppresses ER stress by modulating the PI3K/AKT pathway. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-02963-4.
Collapse
Affiliation(s)
- Xiao Lu
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu Province, China.,Department of Orthopaedics, Dongtai Hospital Affiliated to Nantong University, Dongtai City, Jiangsu, China
| | - Chengtang Lv
- Department of Orthopaedics, Yancheng Third People's Hospital, Yancheng, 224000, Jiangsu, China
| | - Yuechao Zhao
- Department of Orthopedic Oncology, Changzheng Hospital, Secondary Military Medical University, Shanghai, China.,Department of Orthopedic, PLA Navy No.905 Hospital, Secondary Military Medical University, Shanghai, China
| | - Yufei Wang
- Zhejiang University-University of Edinburgh Institute (ZJU-UoE Institute), Haining, Zhejiang, China
| | - Yao Li
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yanchang Road, Shanghai, China
| | - Chengyue Ji
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Zhuanghui Wang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Wu Ye
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu Province, China
| | - Shunzhi Yu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yanchang Road, Shanghai, China.
| | - Jianling Bai
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Jiangsu Province, Nanjing, 211166, China.
| | - Weihua Cai
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu Province, China.
| |
Collapse
|
20
|
Fan C, Yang W, Zhang L, Cai H, Zhuang Y, Chen Y, Zhao Y, Dai J. Restoration of spinal cord biophysical microenvironment for enhancing tissue repair by injury-responsive smart hydrogel. Biomaterials 2022; 288:121689. [DOI: 10.1016/j.biomaterials.2022.121689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 06/10/2022] [Accepted: 07/18/2022] [Indexed: 11/02/2022]
|
21
|
Levetiracetam Attenuates the Spinal Cord Injury Induced by Acute Trauma via Suppressing the Expression of Perforin. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:7218666. [PMID: 35633929 PMCID: PMC9135510 DOI: 10.1155/2022/7218666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/14/2022] [Accepted: 03/18/2022] [Indexed: 02/07/2023]
Abstract
The spinal cord injury (SCI) is one of the major reasons causing the motor dysfunctions of the patients. At present, few therapeutic strategies can effectively improve the symptom of SCI. Levetiracetam has been confirmed to alleviate the injury of nerve cells, while its functions in SCI remains unclear. In this study, C57BL/6J mice were used to establish SCI models to observe the effect of levetiracetam on SCI. The mice were fed with 180 mg/kg levetiracetam when suffering from SCI, and Basso mouse score (BMS) and CatWalk-assisted gait analysis were used to observe the motor functions of the mice. Nissl staining and TUNEL staining were used to observe the injury of nerve cells. The abundance of inflammatory factors was measured by ELISA. The permeability of blood-spinal cord barrier (BSCB) in mice was detected with macrophage infiltration analysis. Moreover, the abundance of perforin in the tissues was detected by western blot. The results showed that the SCI mice treated with levetiracetam exhibited lighter motor dysfunction compared with the mice treated with saline. Levetiracetam can effectively reduce the inflammatory reactions and alleviate apoptosis of the nerve cells. Moreover, levetiracetam remarkably decreased the BSCB permeability of SCI mice. Besides, it was also found that levetiracetam can significantly inhibit the expression of perforin. In conclusion, this study suggests that levetiracetam can attenuate the injury of BSCB to block the progression of SCI via suppressing the expression of perforin.
Collapse
|
22
|
Jiang W, He F, Ding G, Wu J. Topoisomerase 1 inhibition modulates pyroptosis to improve recovery after spinal cord injury. FASEB J 2022; 36:e22294. [PMID: 35579890 DOI: 10.1096/fj.202100713rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 02/28/2022] [Accepted: 03/20/2022] [Indexed: 11/11/2022]
Abstract
Excessive neuroinflammation and neuronal loss contribute to mechanisms of spinal cord injury (SCI). Accumulating evidence has suggested that topoisomerase 1 (Top1) inhibition can suppress exacerbated immune responses and protect against lethal inflammation. Pyroptosis is a recently identified pro-inflammatory programmed mode of cell death. However, the effects and underlying mechanisms of Top1 inhibition in SCI remains unclear. Locomotor functional recovery in mice was evaluated through Basso Mouse Scale (BMS). Neuronal loss was evaluated by immunochemistry staining of NeuN. Pyroptosis was determined by immunofluorescence staining, western blot, flow cytometry, cell viability, and cytotoxicity assays. In the present study, we estimated the effects of chemical inhibition of Top1 in an SCI model. Administration of Top1 inhibitor camptothecin (CPT) to mice significantly improved locomotor functional recovery after SCI. Moreover, CPT reduced Top1 level, inhibited nucleotide-binding oligomerization domain-like receptor 3 (NLRP3) inflammasome activation and pyroptosis, attenuated proinflammatory cytokines levels, diminished the number of neutrophil and neuronal loss in mice. Furthermore, CPT in oxygen-glucose deprivation neurons down-regulated Top1 level, attenuated NLRP3 inflammasome activation, and suppressed pyroptosis and inflammatory response. Together, our findings indicate that inhibition of Top1 with CPT can inhibit pyroptosis, control neuroinflammation, and improve functional recovery after SCI.
Collapse
Affiliation(s)
- Wu Jiang
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Orthopedics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Fan He
- Department of Orthopedics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Guoming Ding
- Department of Orthopedics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Junsong Wu
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| |
Collapse
|
23
|
Wang H, Xia Y, Li B, Li Y, Fu C. Reverse Adverse Immune Microenvironments by Biomaterials Enhance the Repair of Spinal Cord Injury. Front Bioeng Biotechnol 2022; 10:812340. [PMID: 35646849 PMCID: PMC9136098 DOI: 10.3389/fbioe.2022.812340] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 04/29/2022] [Indexed: 12/14/2022] Open
Abstract
Spinal cord injury (SCI) is a severe and traumatic disorder that ultimately results in the loss of motor, sensory, and autonomic nervous function. After SCI, local immune inflammatory response persists and does not weaken or disappear. The interference of local adverse immune factors after SCI brings great challenges to the repair of SCI. Among them, microglia, macrophages, neutrophils, lymphocytes, astrocytes, and the release of various cytokines, as well as the destruction of the extracellular matrix are mainly involved in the imbalance of the immune microenvironment. Studies have shown that immune remodeling after SCI significantly affects the survival and differentiation of stem cells after transplantation and the prognosis of SCI. Recently, immunological reconstruction strategies based on biomaterials have been widely explored and achieved good results. In this review, we discuss the important factors leading to immune dysfunction after SCI, such as immune cells, cytokines, and the destruction of the extracellular matrix. Additionally, the immunomodulatory strategies based on biomaterials are summarized, and the clinical application prospects of these immune reconstructs are evaluated.
Collapse
|
24
|
Yang ZL, Rao J, Lin FB, Liang ZY, Xu XJ, Lin YK, Chen XY, Wang CH, Chen CM. The Role of Exosomes and Exosomal Noncoding RNAs From Different Cell Sources in Spinal Cord Injury. Front Cell Neurosci 2022; 16:882306. [PMID: 35518647 PMCID: PMC9062236 DOI: 10.3389/fncel.2022.882306] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Spinal cord injury (SCI) not only affects the quality of life of patients but also poses a heavy burden on their families. Therefore, it is essential to prevent the occurrence of SCI; for unpreventable SCI, it is critical to develop effective treatments. In recent years, various major breakthroughs have been made in cell therapy to protect and regenerate the damaged spinal cord via various mechanisms such as immune regulation, paracrine signaling, extracellular matrix (ECM) modification, and lost cell replacement. Nevertheless, many recent studies have shown that the cell therapy has many disadvantages, such as tumorigenicity, low survival rate, and immune rejection. Because of these disadvantages, the clinical application of cell therapy is limited. In recent years, the role of exosomes in various diseases and their therapeutic potential have attracted much attention. The same is true for exosomal noncoding RNAs (ncRNAs), which do not encode proteins but affect transcriptional and translational processes by targeting specific mRNAs. This review focuses on the mechanism of action of exosomes obtained from different cell sources in the treatment of SCI and the regulatory role and therapeutic potential of exosomal ncRNAs. This review also discusses the future opportunities and challenges, proposing that exosomes and exosomal ncRNAs might be promising tools for the treatment of SCI.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Chun-Hua Wang
- Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Chun-Mei Chen
- Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, China
| |
Collapse
|
25
|
Zhang R, Xie L, Wu F, Xu J, Lu L, Cao L, Li L, Meng W, Zhang H, Shao C, Li X, Chen D. ALG-bFGF Hydrogel Inhibiting Autophagy Contributes to Protection of Blood-Spinal Cord Barrier Integrity via PI3K/Akt/FOXO1/KLF4 Pathway After SCI. Front Pharmacol 2022; 13:828896. [PMID: 35330841 PMCID: PMC8940228 DOI: 10.3389/fphar.2022.828896] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 01/24/2022] [Indexed: 12/16/2022] Open
Abstract
Promoting blood–spinal cord barrier (BSCB) repair at the early stage plays a crucial role in treatment of spinal cord injury (SCI). Excessive activation of autophagy can prevent recovery of BSCB after SCI. Basic fibroblast growth factor (bFGF) has been shown to promote BSCB repair and locomotor function recovery in SCI. However, the therapeutic effect of bFGF via direct administration on SCI is limited because of its rapid degradation and dilution at injury site. Based on these considerations, controlled release of bFGF in the lesion area is becoming an attractive strategy for SCI repair. At present, we have designed a sustained-release system of bFGF (called ALG-bFGF) using sodium alginate hydrogel, which is able to load large amounts of bFGF and suitable for in situ administration of bFGF in vivo. Here, traumatic SCI mice models and oxygen glucose deprivation (OGD)–stimulated human brain microvascular endothelial cells were performed to explore the effects and the underlying mechanisms of ALG-bFGF in promoting SCI repair. After a single in situ injection of ALG-bFGF hydrogel into the injured spinal cord, sustained release of bFGF from ALG hydrogel distinctly prevented BSCB destruction and improved motor functional recovery in mice after SCI, which showed better therapeutic effect than those in mice treated with bFGF solution or ALG. Evidences have demonstrated that autophagy is involved in maintaining BSCB integrity and functional restoration in animals after SCI. In this study, SCI/OGD exposure–induced significant upregulations of autophagy activation-related proteins (Beclin1, ATG5, LC3II/I) were distinctly decreased by ALG-bFGF hydrogel near the baseline and not less than it both in vivo and in vitro, and this inhibitory effect contributed to prevent BSCB destruction. Finally, PI3K inhibitor LY294002 and KLF4 inhibitor NSC-664704 were applied to further explore the underlying mechanism by which ALG-bFGF attenuated autophagy activation to alleviate BSCB destruction after SCI. The results further indicated that ALG-bFGF hydrogel maintaining BSCB integrity by inhibiting autophagy activation was regulated by PI3K/Akt/FOXO1/KLF4 pathway. In summary, our current study revealed a novel mechanism by which ALG-bFGF hydrogel improves BSCB and motor function recovery after SCI, providing an effective therapeutic strategy for SCI repair.
Collapse
Affiliation(s)
- Renkan Zhang
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ling Xie
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Fangfang Wu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ji Xu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Leilei Lu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Lin Cao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Lei Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Weiyang Meng
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Hongyu Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Chuxiao Shao
- Department of Hepatopancreatobiliary Surgery, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, China
| | - Xiaokun Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Daqing Chen
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
26
|
Zhu S, Chen M, Ying Y, Wu Q, Huang Z, Ni W, Wang X, Xu H, Bennett S, Xiao J, Xu J. Versatile subtypes of pericytes and their roles in spinal cord injury repair, bone development and repair. Bone Res 2022; 10:30. [PMID: 35296645 PMCID: PMC8927336 DOI: 10.1038/s41413-022-00203-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/16/2021] [Accepted: 01/17/2022] [Indexed: 02/07/2023] Open
Abstract
Vascular regeneration is a challenging topic in tissue repair. As one of the important components of the neurovascular unit (NVU), pericytes play an essential role in the maintenance of the vascular network of the spinal cord. To date, subtypes of pericytes have been identified by various markers, namely the PDGFR-β, Desmin, CD146, and NG2, each of which is involved with spinal cord injury (SCI) repair. In addition, pericytes may act as a stem cell source that is important for bone development and regeneration, whilst specific subtypes of pericyte could facilitate bone fracture and defect repair. One of the major challenges of pericyte biology is to determine the specific markers that would clearly distinguish the different subtypes of pericytes, and to develop efficient approaches to isolate and propagate pericytes. In this review, we discuss the biology and roles of pericytes, their markers for identification, and cell differentiation capacity with a focus on the potential application in the treatment of SCI and bone diseases in orthopedics.
Collapse
Affiliation(s)
- Sipin Zhu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China.,Molecular Pharmacology Research Centre, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China.,Molecular Laboratory, School of Biomedical Sciences, The University of Western Australia, Perth, WA, 6009, Australia
| | - Min Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Yibo Ying
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Qiuji Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Zhiyang Huang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Wenfei Ni
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Huazi Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Samuel Bennett
- Molecular Laboratory, School of Biomedical Sciences, The University of Western Australia, Perth, WA, 6009, Australia
| | - Jian Xiao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China. .,Molecular Pharmacology Research Centre, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China.
| | - Jiake Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China. .,Molecular Laboratory, School of Biomedical Sciences, The University of Western Australia, Perth, WA, 6009, Australia.
| |
Collapse
|
27
|
Park CS, Lee JY, Choi HY, Yune TY. Suppression of TRPM7 by carvacrol protects against injured spinal cord by inhibiting blood-spinal cord barrier disruption. J Neurotrauma 2022; 39:735-749. [PMID: 35171694 DOI: 10.1089/neu.2021.0338] [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] [Indexed: 11/12/2022] Open
Abstract
When the blood-spinal cord barrier (BSCB) is disrupted after a spinal cord injury (SCI), several pathophysiological cascades occur, including inflammation and apoptotic cell death of neurons and oligodendrocytes, resulting in permanent neurological deficits. Transient receptor potential melastatin 7 (TRPM7) is involved in the pathological processes in many neuronal diseases, including traumatic brain injury, amyotrophic lateral sclerosis, parkinsonism dementia, and Alzheimer's disease. Furthermore, carvacrol (CAR), a TRPM7 inhibitor, is known to protect against SCI by reducing oxidative stress and inhibiting the endothelial nitric oxide synthase pathway. However, the functions of TRPM7 in the regulation of BSCB homeostasis after SCI have not been examined. Here, we demonstrated that TRPM7, a calcium-mediated non-selective divalent cation channel, plays a critical role after SCI in rats. Rats were contused at T9 and given CAR (50 mg/kg) via intraperitoneally immediately and 12 hours after SCI, and then given the same dose once a day for 7 days. TRPM7 was found to be up-regulated after SCI in both in vitro and in vivo studies, and it was expressed in blood vessels alongside neurons and oligodendrocytes. Additionally, CAR treatment suppressed BSCB disruption by inhibiting the loss of TJ proteins and preserved TJ integrity. CAR also reduced apoptotic cell death and improved functional recovery after SCI by preventing BSCB disruption caused by blood infiltration and inflammatory responses. Based on these findings, we propose that blocking the TRPM7 channel can inhibit the destruction of the BSCB and it is a potential target in therapeutic drug development for use in SCI.
Collapse
Affiliation(s)
- Chan S Park
- Kyung Hee University, 26723, Dongdaemun-gu, Seoul, Korea (the Republic of);
| | - Jee Youn Lee
- Kyung Hee University, 26723, Seoul, Korea (the Republic of);
| | - Hye Y Choi
- Kyung Hee University, 26723, Age-Related and Brain Diseases Research Center, Seoul, Korea (the Republic of);
| | - Tae Y Yune
- Kyung Hee University, 26723, Age-Related and Brain Diseases Research Center, Seoul, Korea (the Republic of);
| |
Collapse
|
28
|
Kalra P, Khan H, Kaur A, Singh TG. Mechanistic Insight on Autophagy Modulated Molecular Pathways in Cerebral Ischemic Injury: From Preclinical to Clinical Perspective. Neurochem Res 2022; 47:825-843. [PMID: 34993703 DOI: 10.1007/s11064-021-03500-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 12/26/2022]
Abstract
Cerebral ischemia is one of the most devastating brain injuries and a primary cause of acquired and persistent disability worldwide. Despite ongoing therapeutic interventions at both the experimental and clinical levels, options for stroke-related brain injury are still limited. Several evidence suggests that autophagy is triggered in response to cerebral ischemia, therefore targeting autophagy-related signaling pathways can provide a new direction for the therapeutic implications in the ischemic injury. Autophagy is a highly conserved lysosomal-dependent pathway that degrades and recycles damaged or non-essential cellular components to maintain neuronal homeostasis. But, whether autophagy activation promotes cell survival against ischemic injury or, on the contrary, causes neuronal death is still under debate. We performed an extensive literature search from PubMed, Bentham and Elsevier for various aspects related to molecular mechanisms and pathobiology involved in autophagy and several pre-clinical studies justifiable further in the clinical trials. Autophagy modulates various downstream molecular cascades, i.e., mTOR, NF-κB, HIF-1, PPAR-γ, MAPK, UPR, and ROS pathways in cerebral ischemic injury. In this review, the various approaches and their implementation in the translational research in ischemic injury into practices has been covered. It will assist researchers in finding a way to cross the unbridgeable chasm between the pre-clinical and clinical studies.
Collapse
Affiliation(s)
- Palak Kalra
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, 140401, India
| | - Heena Khan
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, 140401, India
| | - Amarjot Kaur
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, 140401, India
| | - Thakur Gurjeet Singh
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, 140401, India.
| |
Collapse
|
29
|
Kung Y, Chen KY, Liao WH, Hsu YH, Wu CH, Hsiao MY, Huang APH, Chen WS. Facilitating drug delivery in the central nervous system by opening the blood-cerebrospinal fluid barrier with a single low energy shockwave pulse. Fluids Barriers CNS 2022; 19:3. [PMID: 34991647 PMCID: PMC8740485 DOI: 10.1186/s12987-021-00303-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/27/2021] [Indexed: 12/19/2022] Open
Abstract
Background The blood-cerebrospinal fluid (CSF) barrier (BCSFB) is critically important to the pathophysiology of the central nervous system (CNS). However, this barrier prevents the safe transmission of beneficial drugs from the blood to the CSF and thus the spinal cord and brain, limiting their effectiveness in treating a variety of CNS diseases. Methods This study demonstrates a method on SD rats for reversible and site-specific opening of the BCSFB via a noninvasive, low-energy focused shockwave (FSW) pulse (energy flux density 0.03 mJ/mm2) with SonoVue microbubbles (2 × 106 MBs/kg), posing a low risk of injury. Results By opening the BCSFB, the concentrations of certain CNS-impermeable indicators (70 kDa Evans blue and 500 kDa FITC-dextran) and drugs (penicillin G, doxorubicin, and bevacizumab) could be significantly elevated in the CSF around both the brain and the spinal cord. Moreover, glioblastoma model rats treated by doxorubicin with this FSW-induced BCSFB (FSW-BCSFB) opening technique also survived significantly longer than untreated controls. Conclusion This is the first study to demonstrate and validate a method for noninvasively and selectively opening the BCSFB to enhance drug delivery into CSF circulation. Potential applications may include treatments for neurodegenerative diseases, CNS infections, brain tumors, and leptomeningeal carcinomatosis. Supplementary Information The online version contains supplementary material available at 10.1186/s12987-021-00303-x.
Collapse
Affiliation(s)
- Yi Kung
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & National Taiwan University College of Medicine, Taipei City, Taiwan
| | - Kuan-Yu Chen
- Division of Pulmonology, Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, Taipei City, Taiwan
| | - Wei-Hao Liao
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & National Taiwan University College of Medicine, Taipei City, Taiwan
| | - Yi-Hua Hsu
- Department of Surgery, National Taiwan University Hospital, Taipei City, Taiwan
| | - Chueh-Hung Wu
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & National Taiwan University College of Medicine, Taipei City, Taiwan
| | - Ming-Yen Hsiao
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & National Taiwan University College of Medicine, Taipei City, Taiwan
| | - Abel P-H Huang
- Department of Surgery, National Taiwan University Hospital, Taipei City, Taiwan.
| | - Wen-Shiang Chen
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & National Taiwan University College of Medicine, Taipei City, Taiwan. .,Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, Taiwan.
| |
Collapse
|
30
|
Dolma S, Adhikari K, Mamidi T, Roy A, Pathak Z, Kumar H. Ethamsylate Attenuates Mutilated Secondary Pathogenesis and Exhibits a Neuroprotective Role in Experimental Model of Spinal Cord Injury. Neuroscience 2022; 484:26-37. [PMID: 34995714 DOI: 10.1016/j.neuroscience.2021.12.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 12/25/2021] [Accepted: 12/30/2021] [Indexed: 11/25/2022]
Abstract
Deficits in the neuronal connection that succumbs to the impairment of sensory and motor neurons are the hallmarks of spinal cord injury (SCI). Secondary pathogenesis, which initiates after the primary mechanical insult to the spinal cord, depicts a pivotal role in producing inflammation, lesion formation and ultimately causes fibrotic scar formation in the chronic period. This fibrotic scar formed acts as a major hindrance in facilitating axonal regeneration and is one of the root causes of motor impairment. Cascade of secondary events in SCI begins with injury-induced blood spinal cord barrier rupture that promotes increased migration of neutrophils, macrophages, and other inflammatory cells at the injury site to initiate the secondary damages. This phenomenon leads to the release of matrix metalloproteinase, cytokines and chemokines, reactive oxygen species, and other proteolytic enzymes at the lesion site. These factors assist in the activation of the TGF-β1 signaling pathway, which further leads to excessive proliferation of perivascular fibroblast, followed by deposition of collagen and fibronectin matrix, which are the main components of the fibrotic scar. Subsequently, this scar formed inhibits the propagation of action potential from one neuron to adjacent neurons. Ethamsylate, an anti-hemorrhagic drug, has the potential to maintain early hemostasis as well as restore capillary resistance. Therefore, we hypothesized that ethamsylate, by virtue of its anti-hemorrhagic activity, reduces hemorrhagic ischemia-induced neuronal apoptosis, maintains the blood spinal cord barrier integrity, and decreases secondary damage severity, thereby reduce the extent of fibrotic scar formation, and demonstrates a neuroprotective role in SCI.
Collapse
Affiliation(s)
- Sonam Dolma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Kirti Adhikari
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Teena Mamidi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Abhishek Roy
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Zarna Pathak
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Hemant Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India.
| |
Collapse
|
31
|
Abstract
The blood-spinal cord barrier (BSCB) has been long thought of as a functional equivalent to the blood-brain barrier (BBB), restricting blood flow into the spinal cord. The spinal cord is supported by various disc tissues that provide agility and has different local immune responses compared to the brain. Though physiologically, structural components of the BSCB and BBB share many similarities, the clinical landscape significantly differs. Thus, it is crucial to understand the composition of BSCB and also to establish the cause–effect relationship with aberrations and spinal cord dysfunctions. Here, we provide a descriptive analysis of the anatomy, current techniques to assess the impairment of BSCB, associated risk factors and impact of spinal disorders such as spinal cord injury (SCI), amyotrophic lateral sclerosis (ALS), peripheral nerve injury (PNI), ischemia reperfusion injury (IRI), degenerative cervical myelopathy (DCM), multiple sclerosis (MS), spinal cavernous malformations (SCM) and cancer on BSCB dysfunction. Along with diagnostic and mechanistic analyses, we also provide an up-to-date account of available therapeutic options for BSCB repair. We emphasize the need to address BSCB as an individual entity and direct future research towards it.
Collapse
|
32
|
Lee J, Choi H, Park C, Jeon S, Yune T. Jmjd3 Mediates Neuropathic Pain by Inducing Macrophage Infiltration and Activation in Lumbar Spinal Stenosis Animal Model. Int J Mol Sci 2021; 22:ijms222413426. [PMID: 34948220 PMCID: PMC8707917 DOI: 10.3390/ijms222413426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/09/2021] [Accepted: 12/13/2021] [Indexed: 01/14/2023] Open
Abstract
Lumbar spinal stenosis (LSS) is a major cause of chronic neuropathic back and/or leg pain. Recently, we demonstrated that a significant number of macrophages infiltrated into the cauda equina after compression injury, causing neuroinflammation, and consequently mediating neuropathic pain development and/or maintenance. However, the molecular mechanisms underlying macrophage infiltration and activation have not been elucidated. Here, we demonstrated the critical role of histone H3K27 demethylase Jmjd3 in blood-nerve barrier dysfunction following macrophage infiltration and activation in LSS rats. The LSS rat model was induced by cauda equina compression using a silicone block within the epidural spaces of the L5-L6 vertebrae with neuropathic pain developing 4 weeks after compression. We found that Jmjd3 was induced in the blood vessels and infiltrated macrophages in a rat model of neuropathic pain. The blood-nerve barrier permeability in the cauda equina was increased after compression and significantly attenuated by the Jmjd3 demethylase inhibitor, GSK-J4. GSK-J4 also inhibited the expression and activation of MMP-2 and MMP-9 and significantly alleviated the loss of tight junction proteins and macrophage infiltration. Furthermore, the activation of a macrophage cell line, RAW 264.7, by LPS was significantly alleviated by GSK-J4. Finally, GSK-J4 and a potential Jmjd3 inhibitor, gallic acid, significantly inhibited mechanical allodynia in LSS rats. Thus, our findings suggest that Jmjd3 mediates neuropathic pain development and maintenance by inducing macrophage infiltration and activation after cauda equina compression and thus may serve as a potential therapeutic target for LSS-induced neuropathic pain.
Collapse
Affiliation(s)
- Jeeyoun Lee
- Age-Related and Brain Diseases Research Center, Kyung Hee University, Seoul 02447, Korea; (J.L.); (H.C.); (C.P.)
| | - Haeyoung Choi
- Age-Related and Brain Diseases Research Center, Kyung Hee University, Seoul 02447, Korea; (J.L.); (H.C.); (C.P.)
| | - Chansol Park
- Age-Related and Brain Diseases Research Center, Kyung Hee University, Seoul 02447, Korea; (J.L.); (H.C.); (C.P.)
| | - Sangryong Jeon
- Department of Neurological Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea;
| | - Taeyoung Yune
- Age-Related and Brain Diseases Research Center, Kyung Hee University, Seoul 02447, Korea; (J.L.); (H.C.); (C.P.)
- Department Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Korea
- Correspondence: ; Tel.: +82-2-961-0968; Fax: +82-2-969-6343
| |
Collapse
|
33
|
Xin W, Qiang S, Jianing D, Jiaming L, Fangqi L, Bin C, Yuanyuan C, Guowang Z, Jianguang X, Xiaofeng L. Human Bone Marrow Mesenchymal Stem Cell-Derived Exosomes Attenuate Blood-Spinal Cord Barrier Disruption via the TIMP2/MMP Pathway After Acute Spinal Cord Injury. Mol Neurobiol 2021; 58:6490-6504. [PMID: 34554399 DOI: 10.1007/s12035-021-02565-w] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/13/2021] [Indexed: 11/24/2022]
Abstract
After spinal cord injury (SCI), destruction of the blood-spinal cord barrier (BSCB) results in infiltration of blood cells, such as neutrophils and macrophages, leading to permanent neurological dysfunction. Previous studies have shown that human bone marrow mesenchymal stem cell (BMSC)-derived exosomes have a beneficial neuroprotective effect in SCI models. However, whether BMSC-Exos contribute to the integrity of the BSCB has not been clarified. The purpose of this study was to investigate the mechanism of BMSC-Exo-induced changes in the permeability of the BSCB after SCI. Here, we first used BMSC-Exos to treat an SCI rat model, showing that BMSC-Exos can inhibit BSCB permeability damage and improve spontaneous repair. Next, we found that tissue inhibitors of matrix metalloproteinase 2 (TIMP2) have been shown to play an important role in the function of BMSC-Exos by inhibiting the matrix metalloproteinase (MMP) pathway, thereby reducing the reduction of cell junction proteins. Therefore, we constructed siTIMP2 to knock out TIMP2 in BMSC-Exos, which caused the activity of BMSC-Exos to be significantly weakened. Finally, we constructed an in vitro model of BSCB with HBMECs and verified that TIMP2 in BMSC-Exos in vitro can also alleviate BSCB damage. This proof-of-principle study demonstrates that BMSC-Exos can preserve the integrity of the BSCB and improve functional recovery after SCI through the TIMP2/MMP signaling pathway.
Collapse
Affiliation(s)
- Wang Xin
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Shi Qiang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Ding Jianing
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Liang Jiaming
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Lin Fangqi
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Cai Bin
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Chen Yuanyuan
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Zhang Guowang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Xu Jianguang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.
| | - Lian Xiaofeng
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.
| |
Collapse
|
34
|
Luo D, Li X, Hou Y, Hou Y, Luan J, Weng J, Zhan J, Lin D. Sodium tanshinone IIA sulfonate promotes spinal cord injury repair by inhibiting blood spinal cord barrier disruption in vitro and in vivo. Drug Dev Res 2021; 83:669-679. [PMID: 34842291 DOI: 10.1002/ddr.21898] [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: 09/02/2021] [Revised: 10/09/2021] [Accepted: 10/23/2021] [Indexed: 12/13/2022]
Abstract
Spinal cord injury (SCI) leads to microvascular damage and the destruction of the blood spinal cord barrier (BSCB), which can progress into secondary injuries, such as apoptosis and necrosis of neurons and glia, culminating in permanent neurological deficits. BSCB restoration is the primary goal of SCI therapy, although very few drugs can repair damaged barrier structure and permeability. Sodium tanshinone IIA sulfonate (STS) is commonly used to treat cardiovascular disease. However, the therapeutic effects of STS on damaged BSCB during the early stage of SCI remain uncertain. Therefore, we exposed spinal cord microvascular endothelial cells to H2 O2 and treated them with different doses of STS. In addition to protecting the cells from H2 O2 -induced apoptosis, STS also reduced cellular permeability. In the in vivo model of SCI, STS reduced BSCB permeability, relieved tissue edema and hemorrhage, suppressed MMP activation and prevented the loss of tight junction and adherens junction proteins. Our findings indicate that STS treatment promotes SCI recovery, and should be investigated further as a drug candidate against traumatic SCI.
Collapse
Affiliation(s)
- Dan Luo
- Research Laboratory of Spine Degenerative Disease, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Laboratory of Osteology and Traumatology of Traditional Chinese Medicine, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xing Li
- Research Laboratory of Spine Degenerative Disease, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Laboratory of Osteology and Traumatology of Traditional Chinese Medicine, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yonghui Hou
- Research Laboratory of Spine Degenerative Disease, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Laboratory of Osteology and Traumatology of Traditional Chinese Medicine, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yu Hou
- Research Laboratory of Spine Degenerative Disease, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Laboratory of Osteology and Traumatology of Traditional Chinese Medicine, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiyao Luan
- Laboratory of Osteology and Traumatology of Traditional Chinese Medicine, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China.,Second College of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiaxian Weng
- Laboratory of Osteology and Traumatology of Traditional Chinese Medicine, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiheng Zhan
- Research Laboratory of Spine Degenerative Disease, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Laboratory of Osteology and Traumatology of Traditional Chinese Medicine, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dingkun Lin
- Research Laboratory of Spine Degenerative Disease, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Laboratory of Osteology and Traumatology of Traditional Chinese Medicine, Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| |
Collapse
|
35
|
Takeda A, Kanemura A, Funakoshi K. Expression of matrix metalloproteinases during axonal regeneration in the goldfish spinal cord. J Chem Neuroanat 2021; 118:102041. [PMID: 34774721 DOI: 10.1016/j.jchemneu.2021.102041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 10/15/2021] [Accepted: 11/04/2021] [Indexed: 10/19/2022]
Abstract
Spinal cord injury in fish produces fibrous scar, but spontaneous axonal regeneration beyond the scar sometimes occurs. A previous study revealed that regenerating axons enter the scar through tubular structures with laminin, and that an increased number of axons within the tube is coincident with enlargement of the tube diameter and reduction of the fibrous scar area. The present study investigated the expression of matrix metalloproteinases (MMPs) that might play a role in the degradation of the extracellular matrix in fibrous scar tissue and in the remodeling of tubular structures. Spinal hemisection produced fibrous scar tissue in the lesion center, surrounded by nervous tissue. Two weeks after spinal lesioning, MMP-9 was expressed in some regenerating axons in the fibrous scar tissue. MMP-14 was expressed in the regenerating axons, as well as in glial processes in the fibrous scar tissue. MMP-2 was suggested to be expressed in mast cells in the fibrous scar. The mast cells were in contact with fibroblasts, and in close proximity to the basement membrane of tubular structures surrounding the regenerating axons. The present findings suggest that several MMPs are involved in axon regenerating processes following spinal cord injury in goldfish. MMP-9 and MMP-14 expressed in the regenerating axons might degrade extracellular matrix and support axonal growth deep into the fibrous scar tissue. MMP-14 expressed in glial cells and MMP-2 expressed in mast cells might also provide a beneficial environment for axonal regeneration, leading to successful motor recovery.
Collapse
Affiliation(s)
- Akihito Takeda
- Department of Neuroanatomy, Yokohama City University School of Medicine, Kanazawa-ku, Yokohama, Japan
| | - Ami Kanemura
- Yokohama City University School of Medicine, Kanazawa-ku, Yokohama, Japan
| | - Kengo Funakoshi
- Department of Neuroanatomy, Yokohama City University School of Medicine, Kanazawa-ku, Yokohama, Japan.
| |
Collapse
|
36
|
Adhikari K, Dolma S, Mamidi T, Roy A, Pathak Z, Kumar H. Tomographic Imaging and Correlation to Quantify Vascular and Inflammatory Changes in an Experimental Spinal Cord Injury. ACS Chem Neurosci 2021; 12:3864-3872. [PMID: 34628864 DOI: 10.1021/acschemneuro.1c00390] [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: 11/28/2022] Open
Abstract
Spinal cord injury (SCI) is a devastating condition causing the loss of sensory and motor functions. SCI pathology is multifaceted, encompassing inflammation, scarring, neuronal damage, and vascular and tissue remodeling. The dynamics of SCI rapidly transform from acute, sub-acute, and chronic phases. The rapidly changing environment necessitates the real-time monitoring of disease severity. Therefore, in this study, we used the IVIS spectrum, a noninvasive fluorescence imaging modality, to monitor the disease pathology in live animals. We used near-infrared fluorescence imaging agents including Angiosense 750 EX, a probe that detects vascular changes, and Cat B 680 FAST, a probe that detects inflammation at various day points post injury (DPI), that is, DPI-1, DPI-14, and DPI-28. We quantified the pathophysiological changes after SCI using IVIS in live animals. As a result, we observed distinct differences in the disease progression between injured and sham mice. Moreover, live imaging showed a good correlation with behavioral studies, protein expression, and immunohistological analysis. Hence, the goal of this study was to introduce a new optical imaging modality that offers a determination of disease severity and the advantage of accelerated imaging of the correlated biomarkers in a real-time and dynamic manner. This study concluded that Cat B 680 Fast and Angiosense 750 EX could be used to assess the disease severity after SCI. Furthermore, our study suggests that the noninvasive fluorescence optical imaging modality offers a unique approach in monitoring neuroinflammatory diseases in live animals.
Collapse
Affiliation(s)
- Kirti Adhikari
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Sonam Dolma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Teena Mamidi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Abhishek Roy
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Zarna Pathak
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Hemant Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat 382355, India
| |
Collapse
|
37
|
Li ZW, Zhao JJ, Li SY, Cao TT, Wang Y, Guo Y, Xi GJ. Blocking the EGFR/p38/NF-κB signaling pathway alleviates disruption of BSCB and subsequent inflammation after spinal cord injury. Neurochem Int 2021; 150:105190. [PMID: 34537318 DOI: 10.1016/j.neuint.2021.105190] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 10/20/2022]
Abstract
Epidermal growth factor receptor (EGFR) activation is involved in blood spinal cord barrier (BSCB) disruption and secondary injury after spinal cord injury (SCI). However, the underlying mechanisms of EGFR activation mediating BSCB disruption and secondary injury after SCI remain unclear. An in vitro model of oxygen and glucose deprivation/reoxygenation (OGD/R) induced BSCB damage and in vivo rat SCI model were employed to define the role of EGFR/p38/NF-κB signal pathway activation and its induced inflammatory injury in main cellular components of BSCB. Genetic regulation (lentivirus delivered shRNA and overexpression system) or chemical intervention (agonist or inhibitor) were applied to activate or inactivate EGFR and p38 in astrocytes and microvascular endothelial cells (MEC) under which conditions, the expression of pro-inflammatory factors (TNF-α, iNOS, COX-2, and IL-1β), tight junction (TJ) protein (ZO-1 and occludin), nuclear translocation of NF-κB and permeability of BSCB were analyzed. The pEGFR was increased in astrocytes and MEC which induced the activation of EGFR and p38 and NF-κB nuclear translocation. The activation of EGFR and p38 increased the TNF-α, iNOS, COX-2, and IL-1β responsible for the inflammatory injury and reduced the ZO-1 and occludin which caused BSCB disruption. While EGFR or p38 inactivation inhibited NF-κB nuclear translocation, and markedly attenuated the production of pro-inflammatory factors and the loss of TJ protein. This study suggests that the EGFR activation in main cellular components of BSCB after SCI mediates BSCB disruption and secondary inflammatory injury via the EGFR/p38/NF-κB pathway.
Collapse
Affiliation(s)
- Zai-Wang Li
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, PR China.
| | - Jing-Jing Zhao
- Center of Clinical Research, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, 214023, PR China
| | - Su-Ya Li
- Department of Neurology, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, PR China
| | - Ting-Ting Cao
- Department of Neurology, Yancheng First People's Hospital, Yancheng, 224001, PR China
| | - Yi Wang
- University of Traditional Chinese Medicine, Kunming, 650500, PR China; Otolaryngological Department, Yunnan Province Traditional Chinese Medicine, Hospital of Yunnan University of Traditional Chinese Medicine, Kunming, 650500, PR China
| | - Yi Guo
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, PR China
| | - Guang-Jun Xi
- Department of Neurology, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, PR China.
| |
Collapse
|
38
|
Gao J, Khang M, Liao Z, Detloff M, Lee JS. Therapeutic targets and nanomaterial-based therapies for mitigation of secondary injury after spinal cord injury. Nanomedicine (Lond) 2021; 16:2013-2028. [PMID: 34402308 PMCID: PMC8411395 DOI: 10.2217/nnm-2021-0113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 06/29/2021] [Indexed: 12/31/2022] Open
Abstract
Spinal cord injury (SCI) and the resulting neurological trauma commonly result in complete or incomplete neurological dysfunction and there are few effective treatments for primary SCI. However, the following secondary SCI, including the changes of microvasculature, inflammatory response and oxidative stress around the injury site, may provide promising therapeutic targets. The advances of nanomaterials hold promise for delivering therapeutics to alleviate secondary SCI and promote functional recovery. In this review, we highlight recent achievements of nanomaterial-based therapy, specifically targeting blood-spinal cord barrier disruption, mitigation of the inflammatory response and lightening of oxidative stress after spinal cord injury.
Collapse
Affiliation(s)
- Jun Gao
- Department of Bioengineering, Drug Design, Development & Delivery (4D) Laboratory, Clemson University, Clemson, SC 29634, USA
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Minkyung Khang
- Department of Bioengineering, Drug Design, Development & Delivery (4D) Laboratory, Clemson University, Clemson, SC 29634, USA
| | - Zhen Liao
- Department of Bioengineering, Drug Design, Development & Delivery (4D) Laboratory, Clemson University, Clemson, SC 29634, USA
| | - Megan Detloff
- Department of Neurobiology & Anatomy, Drexel University, Philadelphia, PA 19129, USA
| | - Jeoung Soo Lee
- Department of Bioengineering, Drug Design, Development & Delivery (4D) Laboratory, Clemson University, Clemson, SC 29634, USA
| |
Collapse
|
39
|
Zheng B, Jin Y, Mi S, Xu W, Yang X, Hong Z, Wang Z. Dl-3-n-butylphthalide Attenuates Spinal Cord Injury via Regulation of MMPs and Junction Proteins in Mice. Neurochem Res 2021; 46:2297-2306. [PMID: 34086144 DOI: 10.1007/s11064-021-03361-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/13/2021] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
As a serious trauma of the neurological system, spinal cord injury (SCI) results in permanent disability, gives rise to immediate vascular damage and a wide range of matters that induce the breakage of blood spinal cord barrier (BSCB). SCI activates the expression of MMP-2/9, which are considered to accelerate the disruption of BSCB. Recent research shows that Dl-3-n-butylphthalide (NBP) exerted protective effects on blood spinal cord barrier in animals after SCI, but the underlying molecular mechanism of NBP on the BSCB undergoing SCI is unknown. Here, our research show that NBP inhibited the expression of MMP-2/9, then improved the permeability of BSCB following SCI. After the T9 level of spinal cord performed with a moderate injury, NBP was managed by intragastric administration and further performed once a day. NBP remarkably improved the permeability of BSCB and junction proteins degration, then promoted locomotion recovery. The protective effect of NBP on BSCB destruction is related to the regulation of MMP-2/9 induced by SCI. Moreover, NBP obviously inhibited the MMP-2/9 expression and junction proteins degradation in microvascular endothelial cells. In conclusion, our results indicate that MMP-2/9 are relevant to the breakdown of BSCB, NBP impairs BSCB destruction through inhibiting MMP-2/9 and promotes functional recovery subjected to SCI. NBP is likely to become a new nominee as a therapeutic to treat SCI via a transigent BSCB.
Collapse
Affiliation(s)
- Binbin Zheng
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Yanjun Jin
- Nursing Department, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Shuang Mi
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Wei Xu
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Xiangdong Yang
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Zhenghua Hong
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China.
| | - Zhangfu Wang
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China.
| |
Collapse
|
40
|
Neutrophil, Extracellular Matrix Components, and Their Interlinked Action in Promoting Secondary Pathogenesis After Spinal Cord Injury. Mol Neurobiol 2021; 58:4652-4665. [PMID: 34159551 DOI: 10.1007/s12035-021-02443-5] [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: 03/11/2021] [Accepted: 06/05/2021] [Indexed: 02/06/2023]
Abstract
Secondary pathogenesis following primary mechanical damage to the spinal cord is believed to be the ultimate reason for the limitation of currently available therapies. Precisely, the complex cascade of secondary events-mediated scar formation is the sole hurdle in the recovery process due to its inhibitory effect on axonal regeneration, plasticity, and remyelination. Neutrophils initiate this secondary injury along with other extracellular matrix components such as matrix metalloproteinase (MMPs), and chondroitin sulfate proteoglycans (CSPGs). Together, they mediate inflammation, necrosis, apoptosis, lesion, and scar formation at the injury site. Activated neutrophil releases several proteases, cytokines, and chemokines that cause complete tissue destruction. Thus, neutrophil activation and infiltration in the acute phase of injury act as a roadmap for inducing tissue destruction. MMPs, are extracellular proteolytic enzymes that degrade the ECM proteins, increases vascular permeability, and are predominantly released by neutrophils. These MMPs, in turn, cleave NG2 proteoglycan, a subtype of CSPG, into the active form. This active or shed form is involved in both the fibrotic as well as glial scar formation. Since neutrophils and ECM components are closely associated with each other in pathological conditions. Herein, we emphasize the interaction of neutrophils and their influence on ECM protein expression during the acute and chronic phases to identify a promising targets for designing a therapeutic approach in spinal cord injury.
Collapse
|
41
|
Failed, Interrupted, or Inconclusive Trials on Neuroprotective and Neuroregenerative Treatment Strategies in Multiple Sclerosis: Update 2015-2020. Drugs 2021; 81:1031-1063. [PMID: 34086251 PMCID: PMC8217012 DOI: 10.1007/s40265-021-01526-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2021] [Indexed: 02/06/2023]
Abstract
In the recent past, a plethora of drugs have been approved for the treatment of multiple sclerosis (MS). These therapeutics are mainly confined to immunomodulatory or immunosuppressive strategies but do not sufficiently address remyelination and neuroprotection. However, several neuroregenerative agents have shown potential in pre-clinical research and entered Phase I to III clinical trials. Although none of these compounds have yet proceeded to approval, understanding the causes of failure can broaden our knowledge about neuroprotection and neuroregeneration in MS. Moreover, most of the investigated approaches are characterised by consistent mechanisms of action and proved convincing efficacy in animal studies. Therefore, learning from their failure will help us to enforce the translation of findings acquired in pre-clinical studies into clinical application. Here, we summarise trials on MS treatment published since 2015 that have either failed or were interrupted due to a lack of efficacy, adverse events, or for other reasons. We further outline the rationale underlying these drugs and analyse the background of failure to gather new insights into MS pathophysiology and optimise future study designs. For conciseness, this review focuses on agents promoting remyelination and medications with primarily neuroprotective properties or unconventional approaches. Failed clinical trials that pursue immunomodulation are presented in a separate article.
Collapse
|
42
|
Laksitorini MD, Yathindranath V, Xiong W, Parkinson FE, Thliveris JA, Miller DW. Impact of Wnt/β-catenin signaling on ethanol-induced changes in brain endothelial cell permeability. J Neurochem 2021; 157:1118-1137. [PMID: 32998179 DOI: 10.1111/jnc.15203] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/09/2020] [Accepted: 09/23/2020] [Indexed: 12/16/2022]
Abstract
Chronic exposure to ethanol is associated with enhanced leakiness in the brain microvessel endothelial cells that form the blood-brain barrier (BBB). As previous studies suggested Wnt/β-catenin signaling could improve the BBB phenotype of brain endothelial cells, we examined the extent to which Wnt signaling is altered following ethanol exposure, using both a cell culture model of the BBB and mice exposed to ethanol, and the ability of Wnt activation to reverse the permeability effects of ethanol. The human brain endothelial cells, hCMEC/D3, were exposed to ethanol (17-200 mM) for various periods of time (0-96 hr) and Wnt signaling, as well as expression of downstream genes influencing BBB integrity in the cell monolayers were monitored. Determination of Wnt signaling in both brain homogenates and brain microvessels from mice exposed to ethanol was also performed. The effects of ethanol on the permeability of the hCMEC/D3 monolayers were examined using both small molecular weight (sodium fluorescein) and large molecular weight (IRdye 800CW PEG) fluorescent markers. Exposure of hCMEC/D3 to ethanol (50 mM) caused a down-regulation of Wnt/β-catenin signaling, a reduction of tight junction protein expression and up-regulation of plasmalemma vesicle associated protein (PLVAP). A similar reduction in Wnt/β-catenin activity in both cortical brain homogenates and isolated cortical cerebral microvessels were observed in mice. Other areas such as cerebellum and striatum displayed as much as 3-6 fold increases in Dkk-1, an endogenous Wnt inhibitor. Ethanol exposure caused significant changes in both sodium fluorescein and IRdye 800CW PEG permeability (2-fold compared to control). The ethanol-induced increases in permeability were attenuated by treatment with known Wnt activators (i.e. LiCl or Wnt3a). Additional screens of CNS active agents with possible Wnt activity indicated fluoxetine could also prevent the permeability effects of ethanol. These studies suggest that ethanol-induced changes in brain microvessel permeability can be reversed through activation of Wnt signaling.
Collapse
Affiliation(s)
- Marlyn D Laksitorini
- Department of Pharmacology and Therapeutics, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
- Department of Pharmaceutics, Faculty of Pharmacy, Gadjah Mada University, Yogyakarta, Indonesia
| | - Vinith Yathindranath
- Department of Pharmacology and Therapeutics, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Wei Xiong
- Department of Pharmacology and Therapeutics, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Fiona E Parkinson
- Department of Pharmacology and Therapeutics, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
| | - James A Thliveris
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Canada
| | - Donald W Miller
- Department of Pharmacology and Therapeutics, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
- Kleysen Institute of Advanced Medicine, Health Sciences Center, Winnipeg, Canada
- Research Institute in Oncology and Hematology, CancerCare Manitoba, Winnipeg, Canada
| |
Collapse
|
43
|
Ge X, Tang P, Rong Y, Jiang D, Lu X, Ji C, Wang J, Huang C, Duan A, Liu Y, Chen X, Chen X, Xu Z, Wang F, Wang Z, Li X, Zhao W, Fan J, Liu W, Yin G, Cai W. Exosomal miR-155 from M1-polarized macrophages promotes EndoMT and impairs mitochondrial function via activating NF-κB signaling pathway in vascular endothelial cells after traumatic spinal cord injury. Redox Biol 2021; 41:101932. [PMID: 33714739 PMCID: PMC7967037 DOI: 10.1016/j.redox.2021.101932] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 03/01/2021] [Accepted: 03/01/2021] [Indexed: 12/18/2022] Open
Abstract
Pathologically, blood-spinal-cord-barrier (BSCB) disruption after spinal cord injury (SCI) leads to infiltration of numerous peripheral macrophages into injured areas and accumulation around newborn vessels. Among the leaked macrophages, M1-polarized macrophages are dominant and play a crucial role throughout the whole SCI process. The aim of our study was to investigate the effects of M1-polarized bone marrow-derived macrophages (M1-BMDMs) on vascular endothelial cells and their underlying mechanism. Microvascular endothelial cell line bEnd.3 cells were treated with conditioned medium or exosomes derived from M1-BMDMs, followed by evaluations of endothelial-to-mesenchymal transition (EndoMT) and mitochondrial function. After administration, we found conditioned medium or exosomes from M1-BMDMs significantly promoted EndoMT of vascular endothelial cells in vitro and in vivo, which aggravated BSCB disruption after SCI. In addition, significant dysfunction of mitochondria and accumulation of reactive oxygen species (ROS) were also detected. Furthermore, bioinformatics analysis demonstrated that miR-155 is upregulated in both M1-polarized macrophages and microglia. Experimentally, exosomal transfer of miR-155 participated in M1-BMDMs-induced EndoMT and mitochondrial ROS generation in bEnd.3 cells, and subsequently activated the NF-κB signaling pathway by targeting downstream suppressor of cytokine signaling 6 (SOCS6), and suppressing SOCS6-mediated p65 ubiquitination and degradation. Finally, a series of rescue assay further verified that exosomal miR155/SOCS6/p65 axis regulated the EndoMT process and mitochondrial function in vascular endothelial cells. In summary, our work revealed a potential mechanism describing the communications between macrophages and vascular endothelial cells after SCI which could benefit for future research and aid in the development of potential therapies for SCI.
Collapse
Affiliation(s)
- Xuhui Ge
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Pengyu Tang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Yuluo Rong
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Dongdong Jiang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Xiao Lu
- Department of Orthopedics, Dongtai Hospital Affiliated to Nantong University, Yancheng, 224200, Jiangsu, China
| | - Chengyue Ji
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Jiaxing Wang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Chenyu Huang
- Department of Orthopedics, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, China
| | - Ao Duan
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Yang Liu
- Department of Orthopedics, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu, China
| | - Xinglin Chen
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Xichen Chen
- Department of Analytical & Testing Center, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Zhiyang Xu
- Department of Analytical & Testing Center, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Feng Wang
- Department of Analytical & Testing Center, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Zibin Wang
- Department of Analytical & Testing Center, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Xiaoyan Li
- Department of Analytical & Testing Center, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Wene Zhao
- Department of Analytical & Testing Center, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Jin Fan
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Wei Liu
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| | - Guoyong Yin
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| | - Weihua Cai
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| |
Collapse
|
44
|
Jin LY, Li J, Wang KF, Xia WW, Zhu ZQ, Wang CR, Li XF, Liu HY. Blood-Spinal Cord Barrier in Spinal Cord Injury: A Review. J Neurotrauma 2021; 38:1203-1224. [PMID: 33292072 DOI: 10.1089/neu.2020.7413] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The blood-spinal cord barrier (BSCB), a physical barrier between the blood and spinal cord parenchyma, prevents the toxins, blood cells, and pathogens from entering the spinal cord and maintains a tightly controlled chemical balance in the spinal environment, which is necessary for proper neural function. A BSCB disruption, however, plays an important role in primary and secondary injury processes related to spinal cord injury (SCI). After SCI, the structure of the BSCB is broken down, which leads directly to leakage of blood components. At the same time, the permeability of the BSCB is also increased. Repairing the disruption of the BSCB could alleviate the SCI pathology. We review the morphology and pathology of the BSCB and progression of therapeutic methods targeting BSCB in SCI.
Collapse
Affiliation(s)
- Lin-Yu Jin
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| | - Jie Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P.R. China
| | - Kai-Feng Wang
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| | - Wei-Wei Xia
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| | - Zhen-Qi Zhu
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| | - Chun-Ru Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P.R. China
| | - Xin-Feng Li
- Department of Spinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, P.R. China
| | - Hai-Ying Liu
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| |
Collapse
|
45
|
Puścian A, Winiarski M, Łęski S, Charzewski Ł, Nikolaev T, Borowska J, Dzik JM, Bijata M, Lipp HP, Dziembowska M, Knapska E. Chronic fluoxetine treatment impairs motivation and reward learning by affecting neuronal plasticity in the central amygdala. Br J Pharmacol 2021; 178:672-688. [PMID: 33171527 DOI: 10.1111/bph.15319] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 10/02/2020] [Accepted: 10/22/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND AND PURPOSE The therapeutic effects of fluoxetine are believed to be due to increasing neuronal plasticity and reversing some learning deficits. Nevertheless, a growing amount of evidence shows adverse effects of this drug on cognition and some forms of neuronal plasticity. EXPERIMENTAL APPROACH To study the effects of chronic fluoxetine treatment, we combine an automated assessment of motivation and learning in mice with an investigation of neuronal plasticity in the central amygdala and basolateral amygdala. We use immunohistochemistry to visualize neuronal types and perineuronal nets, along with DI staining to assess dendritic spine morphology. Gel zymography is used to test fluoxetine's impact on matrix metalloproteinase-9, an enzyme involved in synaptic plasticity. KEY RESULTS We show that chronic fluoxetine treatment in non-stressed mice increases perineuronal nets-dependent plasticity in the basolateral amygdala, while impairing MMP-9-dependent plasticity in the central amygdala. Further, we illustrate how the latter contributes to anhedonia and deficits of reward learning. Behavioural impairments are accompanied by alterations in morphology of dendritic spines in the central amygdala towards an immature state, most likely reflecting animals' inability to adapt. We strengthen the link between the adverse effects of fluoxetine and its influence on MMP-9 by showing that behaviour of MMP-9 knockout animals remains unaffected by the drug. CONCLUSION AND IMPLICATIONS Chronic fluoxetine treatment differentially affects various forms of neuronal plasticity, possibly explaining its opposing effects on brain and behaviour. These findings are of immediate clinical relevance since reported side effects of fluoxetine pose a potential threat to patients.
Collapse
Affiliation(s)
- Alicja Puścian
- Laboratory of Emotions Neurobiology, BRAINCITY - Centre of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Maciej Winiarski
- Laboratory of Emotions Neurobiology, BRAINCITY - Centre of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Szymon Łęski
- Laboratory of Neuroinformatics, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Łukasz Charzewski
- Laboratory of Emotions Neurobiology, BRAINCITY - Centre of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Tomasz Nikolaev
- Laboratory of Emotions Neurobiology, BRAINCITY - Centre of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Joanna Borowska
- Laboratory of Emotions Neurobiology, BRAINCITY - Centre of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Jakub M Dzik
- Laboratory of Emotions Neurobiology, BRAINCITY - Centre of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Monika Bijata
- Laboratory of Cell Biophysics, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Hans-Peter Lipp
- Institute of Evolutionary Medicine, University of Zurich, Zurich, CH-8057, Switzerland
| | | | - Ewelina Knapska
- Laboratory of Emotions Neurobiology, BRAINCITY - Centre of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| |
Collapse
|
46
|
Zheng XQ, Huang JF, Lin JL, Zhu YX, Wang MQ, Guo ML, Zan XJ, Wu AM. Controlled release of baricitinib from a thermos-responsive hydrogel system inhibits inflammation by suppressing JAK2/STAT3 pathway in acute spinal cord injury. Colloids Surf B Biointerfaces 2020; 199:111532. [PMID: 33385822 DOI: 10.1016/j.colsurfb.2020.111532] [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] [Received: 09/14/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 12/16/2022]
Abstract
Aggressive inflammation is an important pathological process of secondary injury in acute spinal cord injury (SCI). However, traditional treatments of secondary injury in acute SCI have achieved little success. Novel biomaterials combined with small molecule drugs are considered as a potential treatment for SCI. Baricitinib, a highly selective JAK1/JAK2 inhibitor, can effectively inhibit the JAK2/STAT3 pathway involved in the modulation of inflammation. However, to evaluate Baricitinib's therapeutic effect on SCI remains to be confirmed. In this study, we designed an injectable PLGA-PEG-PLGA thermos-sensitive hydrogel with baricitinib (Bari-P hydrogel) and measured its efficacy, physical and biological properties in vitro. In the SCI rat, Bari-P hydrogel was injected into the injured spinal cord. Neuronal regeneration was evaluated at 3 days and 4 weeks after surgery by determining the inflammatory cytokine levels, behavioral tests, and histological analysis. The hydrogel can gel in the body, disintegrate almost within 72 h and achieve drug release. Baricitinib can effectively inhibit the JAK2/STAT3 pathway of microglia in vitro; while in vivo experiments show that Bari-P hydrogel treatment can inhibit the phosphorylation of JAK2, STAT3 and suppress the production of inflammatory cytokines, and reduces neuronal apoptosis. Histopathological analysis and behavioral tests showed that Bari-P hydrogel reduced neuronal apoptosis in the early stage of injury and later promoted functional recovery. In summary, Bari-P hydrogel reduced neuronal apoptosis and promoted functional recovery in spinal cord injured rats by inhibiting the JAK2-STAT3 pathway and controlling the expression of inflammatory cytokines in the early stages of injury.
Collapse
Affiliation(s)
- Xuan-Qi Zheng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang, 325027, China
| | - Jin-Feng Huang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang, 325027, China
| | - Jia-Liang Lin
- Department of Orthopaedics, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Ya-Xin Zhu
- Wenzhou Institute of Biomaterials and Engineering, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325001, China; School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang Province, 325035. China
| | - Min-Qi Wang
- Department of Orthopaedics, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Mei-Liang Guo
- Department of Dermatology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, China
| | - Xing-Jie Zan
- Wenzhou Institute of Biomaterials and Engineering, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325001, China; School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang Province, 325035. China.
| | - Ai-Min Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang, 325027, China.
| |
Collapse
|
47
|
Peyraga G, Ducassou A, Arnaud FX, Lizée T, Pouédras J, Moyal É. [Radiotherapy and spinal toxicity: News and perspectives]. Cancer Radiother 2020; 25:55-61. [PMID: 33303351 DOI: 10.1016/j.canrad.2020.05.017] [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: 04/04/2020] [Revised: 04/26/2020] [Accepted: 05/01/2020] [Indexed: 01/21/2023]
Abstract
Radiation-induced myelopathy is a devastating late effect of radiotherapy. Fortunately, this late effect is exceptional. The clinical presentation of radiation myelopathy is aspecific, typically occurring between 6 to 24 months after radiotherapy, and radiation-induced myelopathy remains a diagnosis of exclusion. Magnetic resonance imaging is the most commonly used imaging tool. Radiation oncologists must be extremely cautious to the spinal cord dose, particularly in stereotactic radiotherapy and reirradiation. Conventionally, a maximum dose of 50Gy is tolerated in normofractionated radiotherapy (1.8 to 2Gy per fraction). Repeat radiotherapies lead to consider cumulative doses above this recommendation to offer individualized reirradiation. Several factors increase the risk of radiation-induced myelopathy, such as concomitant or neurotoxic chemotherapy. The development of predictive algorithms to prevent the risk of radiation-induced myelopathy is promising. However, radiotherapy prescription should be cautious, regarding to ALARA principle (as low as reasonably achievable). As the advent of immunotherapy has improved patient survival data and the concept of oligometastatic cancer is increasing in daily practice, stereotactic treatments and reirradiations will be increasingly frequent indications. Predict the risk of radiation-induced myelopathy is therefore a major issue in the following years, and remains a daily challenge for radiation oncologists.
Collapse
Affiliation(s)
- G Peyraga
- Service de radiothérapie, groupe de radiothérapie et d'oncologie des Pyrénées (Grop), chemin de l'Ormeau, 65000 Tarbes, France.
| | - A Ducassou
- Service de radiothérapie, Institut universitaire du cancer de Toulouse (Oncopole), 1, avenue Irène-Joliot-Curie, 31000 Toulouse, France
| | - F-X Arnaud
- Service de radiothérapie, Institut universitaire du cancer de Toulouse (Oncopole), 1, avenue Irène-Joliot-Curie, 31000 Toulouse, France
| | - T Lizée
- Service de radiothérapie, Institut cancérologique de l'ouest, centre Paul-Papin, 15, rue André-Bocquel, 49055 Angers, France
| | - J Pouédras
- Service de radiothérapie, Institut universitaire du cancer de Toulouse (Oncopole), 1, avenue Irène-Joliot-Curie, 31000 Toulouse, France
| | - É Moyal
- Service de radiothérapie, Institut universitaire du cancer de Toulouse (Oncopole), 1, avenue Irène-Joliot-Curie, 31000 Toulouse, France
| |
Collapse
|
48
|
Bicker J, Alves G, Fonseca C, Falcão A, Fortuna A. Repairing blood-CNS barriers: Future therapeutic approaches for neuropsychiatric disorders. Pharmacol Res 2020; 162:105226. [PMID: 33007420 DOI: 10.1016/j.phrs.2020.105226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 12/19/2022]
Abstract
Central nervous system (CNS) drug development faces significant difficulties that translate into high rates of failure and lack of innovation. The pathophysiology of neurological and psychiatric disorders often results in the breakdown of blood-CNS barriers, disturbing the CNS microenvironment and worsening disease progression. Therefore, restoring the integrity of blood-CNS barriers may have a beneficial influence in several CNS disorders and improve treatment outcomes. In this review, pathways that may be modulated to protect blood-CNS barriers from neuroinflammatory and oxidative insults are featured. First, the participation of the brain endothelium and glial cells in disruption processes is discussed. Then, the relevance of regulatory systems is analysed, specifically the hypothalamic-pituitary axis, the renin-angiotensin system, sleep and circadian rhythms, and glutamate neurotransmission. Lastly, compounds of endogenous and exogenous origin that are known to mediate the repair of blood-CNS barriers are presented. We believe that enhancing the protection of blood-CNS barriers is a promising therapeutic strategy to pursue in the future.
Collapse
Affiliation(s)
- Joana Bicker
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal; University of Coimbra, Coimbra Institute for Biomedical Imaging and Translational Research, Coimbra, Portugal.
| | - Gilberto Alves
- CICS-UBI, Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Carla Fonseca
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal
| | - Amílcar Falcão
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal; University of Coimbra, Coimbra Institute for Biomedical Imaging and Translational Research, Coimbra, Portugal
| | - Ana Fortuna
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal; University of Coimbra, Coimbra Institute for Biomedical Imaging and Translational Research, Coimbra, Portugal
| |
Collapse
|
49
|
Park CS, Lee JY, Choi HY, Lee K, Heo Y, Ju BG, Choo HYP, Yune TY. Gallic acid attenuates blood-spinal cord barrier disruption by inhibiting Jmjd3 expression and activation after spinal cord injury. Neurobiol Dis 2020; 145:105077. [PMID: 32898645 DOI: 10.1016/j.nbd.2020.105077] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/28/2020] [Accepted: 09/02/2020] [Indexed: 01/28/2023] Open
Abstract
After spinal cord injury (SCI), blood-spinal cord barrier (BSCB) disruption results in secondary injury including apoptotic cell death of neurons and oligodendrocytes, thereby leads to permanent neurological deficits. Recently, we reported that the histone H3K27me3 demethylase Jmjd3 plays a role in regulating BSCB integrity after SCI. Here, we investigated whether gallic acid (GA), a natural phenolic compound that is known to be anti-inflammatory, regulates Jmjd3 expression and activation, thereby attenuates BSCB disruption following the inflammatory response and improves functional recovery after SCI. Rats were contused at T9 and treated with GA (50 mg/kg) via intraperitoneal injection immediately, 6 h and 12 h after SCI, and further treated for 7 d with the same dose once a day. To elucidate the underlying mechanism, we evaluated Jmjd3 activity and expression, and assessed BSCB permeability by Evans blue assay after SCI. GA significantly inhibited Jmjd3 expression and activation after injury both in vitro and in vivo. GA also attenuated the expression and activation of matrix metalloprotease-9, which is well known to disrupt the BSCB after SCI. Consistent with these findings, GA attenuated BSCB disruption and reduced the infiltration of neutrophils and macrophages compared with the vehicle control. Finally, GA significantly alleviated apoptotic cell death of neurons and oligodendrocytes and improved behavior functions. Based on these data, we propose that GA can exert a neuroprotective effect by inhibiting Jmjd3 activity and expression followed the downregulation of matrix metalloprotease-9, eventually attenuating BSCB disruption after SCI.
Collapse
Affiliation(s)
- Chan Sol Park
- Age-Related and Brain Diseases Research Center, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Biomedical Science, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jee Youn Lee
- Age-Related and Brain Diseases Research Center, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hae Young Choi
- Age-Related and Brain Diseases Research Center, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kwanghyun Lee
- Department of Life Science, Sogang University, Seoul 04107, Republic of Korea
| | - Yeonju Heo
- School of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Bong Gun Ju
- Department of Life Science, Sogang University, Seoul 04107, Republic of Korea
| | - Hae-Young Park Choo
- School of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Tae Young Yune
- Age-Related and Brain Diseases Research Center, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Biomedical Science, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea.
| |
Collapse
|
50
|
Wang C, Xu K, Wang Y, Mao Y, Huang Y, Liang Y, Liu Y, Hao J, Gu X, Ma Z, Sun Y. Spinal cannabinoid receptor 2 activation reduces hypersensitivity associated with bone cancer pain and improves the integrity of the blood-spinal cord barrier. Reg Anesth Pain Med 2020; 45:783-791. [PMID: 32796132 PMCID: PMC7513263 DOI: 10.1136/rapm-2019-101262] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 06/05/2020] [Accepted: 06/25/2020] [Indexed: 02/05/2023]
Abstract
Background Disruption of the blood–spinal cord barrier (BSCB) can facilitate inflammation that results in pain hypersensitivity. Proinflammatory cytokines produced by activated microglia and astrocytes damage the BSCB. This study aims to explore whether the BSCB is damaged in the bone cancer pain (BCP) model and to investigate a potential role and mechanism of JWH015 ((2-methyl-1-propyl-1H-indol-3-yl)−1-naphthalenylmethanone), a selective cannabinoid receptor 2 (CB2R) agonist, in preserving the BSCB integrity in the BCP model. Methods We used a male mouse model of BCP. Pain hypersensitivity was measured over time. Evans blue dye extravasation, transmission electron microscopy and Western blotting were performed to investigate the permeability and structural integrity of the BSCB. Immunofluorescence staining and western blotting were used to investigate the effect of JWH015 on the activation of glial cells and the levels of proinflammatory cytokines. Results A single intrathecal injection of JWH015 ameliorated pain hypersensitivity, the BSCB disruption and microglia and astrocyte activation. Decreases in the expression of ZO-1 and claudin-5 were partially restored by JWH015. The levels of the proinflammatory cytokines interleukin-1β and tumor necrosis factor-α and the enzyme MMP9 were reduced by JWH015. However, all effects were prevented by pretreatment with a CB2R-selective antagonist, AM630 ((6-iodo-2-methyl-1-(2-morpholinoethyl)−1H-indol-3-yl)(4-methoxyphenyl)methanone). Conclusions JWH015 alleviates neuroinflammation and maintains the BSCB integrity and permeability in a mouse model of BCP, which is probably mediated by inhibiting glial cells activation. This study reveals the new analgesic mechanism of JWH015 on BCP and provides a perspective to explore novel drugs that target the BSCB to control BCP.
Collapse
Affiliation(s)
- Chenchen Wang
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Ke Xu
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Yu Wang
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Yanting Mao
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Yulin Huang
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Ying Liang
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Yue Liu
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Jing Hao
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Xiaoping Gu
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Zhengliang Ma
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Yu'e Sun
- Department of Anesthesiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| |
Collapse
|