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Chen J, Zeng X, Wang L, Zhang W, Li G, Cheng X, Su P, Wan Y, Li X. Mutual regulation of microglia and astrocytes after Gas6 inhibits spinal cord injury. Neural Regen Res 2025; 20:557-573. [PMID: 38819067 DOI: 10.4103/nrr.nrr-d-23-01130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 01/17/2024] [Indexed: 06/01/2024] Open
Abstract
JOURNAL/nrgr/04.03/01300535-202502000-00032/figure1/v/2024-05-28T214302Z/r/image-tiff Invasive inflammation and excessive scar formation are the main reasons for the difficulty in repairing nervous tissue after spinal cord injury. Microglia and astrocytes play key roles in the spinal cord injury micro-environment and share a close interaction. However, the mechanisms involved remain unclear. In this study, we found that after spinal cord injury, resting microglia (M0) were polarized into pro-inflammatory phenotypes (MG1 and MG3), while resting astrocytes were polarized into reactive and scar-forming phenotypes. The expression of growth arrest-specific 6 (Gas6) and its receptor Axl were significantly down-regulated in microglia and astrocytes after spinal cord injury. In vitro experiments showed that Gas6 had negative effects on the polarization of reactive astrocytes and pro-inflammatory microglia, and even inhibited the cross-regulation between them. We further demonstrated that Gas6 can inhibit the polarization of reactive astrocytes by suppressing the activation of the Yes-associated protein signaling pathway. This, in turn, inhibited the polarization of pro-inflammatory microglia by suppressing the activation of the nuclear factor-κB/p65 and Janus kinase/signal transducer and activator of transcription signaling pathways. In vivo experiments showed that Gas6 inhibited the polarization of pro-inflammatory microglia and reactive astrocytes in the injured spinal cord, thereby promoting tissue repair and motor function recovery. Overall, Gas6 may play a role in the treatment of spinal cord injury. It can inhibit the inflammatory pathway of microglia and polarization of astrocytes, attenuate the interaction between microglia and astrocytes in the inflammatory microenvironment, and thereby alleviate local inflammation and reduce scar formation in the spinal cord.
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Affiliation(s)
- Jiewen Chen
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
| | - Xiaolin Zeng
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
| | - Le Wang
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
| | - Wenwu Zhang
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
| | - Gang Li
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
| | - Xing Cheng
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
| | - Peiqiang Su
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
| | - Yong Wan
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
| | - Xiang Li
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Guangdong Province Key Laboratory of Orthopedics and Traumatology, Guangzhou, Guangdong Province, China
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Zha X, Zheng G, Skutella T, Kiening K, Unterberg A, Younsi A. Microglia: a promising therapeutic target in spinal cord injury. Neural Regen Res 2025; 20:454-463. [PMID: 38819048 DOI: 10.4103/nrr.nrr-d-23-02044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 03/22/2024] [Indexed: 06/01/2024] Open
Abstract
Microglia are present throughout the central nervous system and are vital in neural repair, nutrition, phagocytosis, immunological regulation, and maintaining neuronal function. In a healthy spinal cord, microglia are accountable for immune surveillance, however, when a spinal cord injury occurs, the microenvironment drastically changes, leading to glial scars and failed axonal regeneration. In this context, microglia vary their gene and protein expression during activation, and proliferation in reaction to the injury, influencing injury responses both favorably and unfavorably. A dynamic and multifaceted injury response is mediated by microglia, which interact directly with neurons, astrocytes, oligodendrocytes, and neural stem/progenitor cells. Despite a clear understanding of their essential nature and origin, the mechanisms of action and new functions of microglia in spinal cord injury require extensive research. This review summarizes current studies on microglial genesis, physiological function, and pathological state, highlights their crucial roles in spinal cord injury, and proposes microglia as a therapeutic target.
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Affiliation(s)
- Xiaowei Zha
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Guoli Zheng
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Thomas Skutella
- Department of Neuroanatomy, Institute for Anatomy and Cell Biology, Heidelberg University, Heidelberg, Germany
| | - Karl Kiening
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Andreas Unterberg
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Alexander Younsi
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
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Wang Y, Zhao T, Chen WC, Zheng Y, Xu W, Huang S. miR-540-3p partially recovers the locomotor function of spinal cord injury mice by targeting SIX4/Yap1 and inactivation of astrocytes. Neurol Res 2024:1-12. [PMID: 38920017 DOI: 10.1080/01616412.2024.2359263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 05/19/2024] [Indexed: 06/27/2024]
Abstract
BACKGROUND Spinal cord injury (SCI) lacks therapeutic reagents. miRNAs are responsible for mesenchymal stem cells (MSCs) therapy in spinal cord injury. PURPOSE To discover the underlying therapeutic miRNA target and its mechanism for the treatment of SCI. METHOD Two RNA sequence datasets were retrieved from the GEO Datasets database which was accessed on 30 December 2023. The targets of the top 2 ranked miRNAs (miR-540-3p and miR-433-5p) were analyzed using online databases (miRDB, miRMap, TargetScan and STRING database) and both miRNAs were screened by cell counting kit-8 (CCK-8) assay. Then, transfection and local injection of miR-540-3p were performed to examine the capacity of secretion of astrocytes and the locomotor function of SCI mice. RESULTS The significantly high levels of miR-540-3p/433-5p were revealed. Transfection of miR-540-3p conferred inactivation of reactive astrocytes and weakened the capacity of secreting inflammatory cytokines of astrocytes. miR-433-5p was proven to not impact the proliferation of astrocytes. Co-culture of culture supernate from astrocytes transfected with miR-540-3p and neurons demonstrated the significantly preserved neurite length and decreased apoptotic level of neurons. Meanwhile, sine oculis homeobox (SIX4)/Yap1, as the target of miR-540-3p, is critical for abrogating inflammatory damage of neurons in vivo and in vitro, decreasing glial scar, and recovering locomotor function of spinal cord injury mice. Furthermore, SCI mice receiving a local injection of miR-540-3p showed smaller and lighter bladder volume and higher limb strength, but the period from urinary retention to autonomous urination of SCI mice showed no significance. CONCLUSIONS Conclusively, miR-540 discovered from hypoxia-treated exosomes suppresses the inflammatory cytokines secreted by reactive astrocytes, partially preserves the neuronal function of spinal cord injury mice, through the SIX4/Yap1 signalling pathway.
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Affiliation(s)
- Yang Wang
- Department of Orthopedics, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Tianlun Zhao
- Department of Orthopedics, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Wei-Chih Chen
- Department of Orthopedics, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Yongsheng Zheng
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, Jiangxi, China
| | - Weikang Xu
- Biomedical Materials Laboratory, Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Centra, Guangzhou, Guangdong, China
| | - Shuai Huang
- Department of Orthopedics, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
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Ma BQ, Jia JX, Wang H, Li SJ, Yang ZJ, Wang XX, Yan XS. Cannabidiol improves the cognitive function of SAMP8 AD model mice involving the microbiota-gut-brain axis. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:471-479. [PMID: 38590254 DOI: 10.1080/15287394.2024.2338914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Cannabidiol (CBD), a natural component extracted from Cannabis sativa L. exerts neuroprotective, antioxidant, and anti-inflammatory effects in Alzheimer's disease (AD), a disease characterized by impaired cognition and accumulation of amyloid-B peptides (Aβ). Interactions between the gut and central nervous system (microbiota-gut-brain axis) play a critical role in the pathogenesis of neurodegenerative disorder AD. At present investigations into the mechanisms underlying the neuroprotective action of CBD in AD are not conclusive. The aim of this study was thus to examine the influence of CBD on cognition and involvement of the microbiota-gut-brain axis using a senescence-accelerated mouse prone 8 (SAMP8) model. Data demonstrated that administration of CBD to SAMP8 mice improved cognitive function as evidenced from the Morris water maze test and increased hippocampal activated microglia shift from M1 to M2. In addition, CBD elevated levels of Bacteriodetes associated with a fall in Firmicutes providing morphologically a protective intestinal barrier which subsequently reduced leakage of intestinal toxic metabolites. Further, CBD was found to reduce the levels of hippocampal and colon epithelial cells lipopolysaccharide (LPS), known to be increased in AD leading to impaired gastrointestinal motility, thereby promoting neuroinflammation and subsequent neuronal death. Our findings demonstrated that CBD may be considered a beneficial therapeutic drug to counteract AD-mediated cognitive impairment and restore gut microbial functions associated with the observed neuroprotective mechanisms.
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Affiliation(s)
- Bing-Qian Ma
- Basic Medical and Forensic Medicine, Baotou Medical College, Inner Mongolia, China
| | - Jian-Xin Jia
- Basic Medical and Forensic Medicine, Baotou Medical College, Inner Mongolia, China
- Key Laboratory of Human Anatomy, Education Department of Inner Mongolia Autonomous Region, Inner Mongolia, China
| | - He Wang
- School of Health Sciences, University of Newcastle, Newcastle, Australia
| | - Si-Jia Li
- Teaching and Research Department of Golden Chamber, Liaoning University of Traditional Chinese Medicine, Liaoning, China
| | - Zhan-Jun Yang
- Basic Medical and Forensic Medicine, Baotou Medical College, Inner Mongolia, China
- Key Laboratory of Human Anatomy, Education Department of Inner Mongolia Autonomous Region, Inner Mongolia, China
- Department of Human Anatomy, Chifeng University, Inner Mongolia, China
| | - Xin-Xin Wang
- Basic Medical and Forensic Medicine, Baotou Medical College, Inner Mongolia, China
- Teaching and Research Department of Golden Chamber, Liaoning University of Traditional Chinese Medicine, Liaoning, China
| | - Xu-Sheng Yan
- Basic Medical and Forensic Medicine, Baotou Medical College, Inner Mongolia, China
- Key Laboratory of Human Anatomy, Education Department of Inner Mongolia Autonomous Region, Inner Mongolia, China
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Li M, Wang X, Qi B, Cui S, Zheng T, Guan Y, Ma L, Liu S, Li Q, Chen Z, Jian F. Treatment of Syringomyelia Characterized by Focal Dilatation of the Central Canal Using Mesenchymal Stem Cells and Neural Stem Cells. Tissue Eng Regen Med 2024; 21:625-639. [PMID: 38578425 PMCID: PMC11087409 DOI: 10.1007/s13770-024-00637-1] [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: 10/04/2023] [Revised: 02/03/2024] [Accepted: 03/05/2024] [Indexed: 04/06/2024] Open
Abstract
BACKGROUND Syringomyelia is a progressive chronic disease that leads to nerve pain, sensory dissociation, and dyskinesia. Symptoms often do not improve after surgery. Stem cells have been widely explored for the treatment of nervous system diseases due to their immunoregulatory and neural replacement abilities. METHODS In this study, we used a rat model of syringomyelia characterized by focal dilatation of the central canal to explore an effective transplantation scheme and evaluate the effect of mesenchymal stem cells and induced neural stem cells for the treatment of syringomyelia. RESULTS The results showed that cell transplantation could not only promote syrinx shrinkage but also stimulate the proliferation of ependymal cells, and the effect of this result was related to the transplantation location. These reactions appeared only when the cells were transplanted into the cavity. Additionally, we discovered that cell transplantation transformed activated microglia into the M2 phenotype. IGF1-expressing M2 microglia may play a significant role in the repair of nerve pain. CONCLUSION Cell transplantation can promote cavity shrinkage and regulate the local inflammatory environment. Moreover, the proliferation of ependymal cells may indicate the activation of endogenous stem cells, which is important for the regeneration and repair of spinal cord injury.
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Affiliation(s)
- Mo Li
- Department of Neurosurgery, China International Neuroscience Institute, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Key Laboratory of Neurodegeneration, Ministry of Education, Beijing, 100053, China
- Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China
- Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Beijing, China
| | - Xinyu Wang
- Department of Neurosurgery, China International Neuroscience Institute, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Boling Qi
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Key Laboratory of Neurodegeneration, Ministry of Education, Beijing, 100053, China
- Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China
- Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Beijing, China
| | - Shengyu Cui
- Department of Neurosurgery, China International Neuroscience Institute, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Tianqi Zheng
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Key Laboratory of Neurodegeneration, Ministry of Education, Beijing, 100053, China
- Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China
- Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Beijing, China
| | - Yunqian Guan
- Department of Neurosurgery, China International Neuroscience Institute, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Key Laboratory of Neurodegeneration, Ministry of Education, Beijing, 100053, China
- Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China
- Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Beijing, China
| | - Longbing Ma
- Department of Neurosurgery, China International Neuroscience Institute, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Sumei Liu
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Key Laboratory of Neurodegeneration, Ministry of Education, Beijing, 100053, China
- Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China
- Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Beijing, China
| | - Qian Li
- Department of Neurosurgery, China International Neuroscience Institute, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Zhiguo Chen
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Key Laboratory of Neurodegeneration, Ministry of Education, Beijing, 100053, China.
- Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China.
- Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Beijing, China.
| | - Fengzeng Jian
- Department of Neurosurgery, China International Neuroscience Institute, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
- Research Center of Spine and Spinal Cord, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China.
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Agarwal G, Roy A, Singh AA, Kumar H, Mandoli A, Srivastava A. BM-MSC-Loaded Graphene-Collagen Cryogels Ameliorate Neuroinflammation in a Rat Spinal Cord Injury Model. ACS APPLIED BIO MATERIALS 2024; 7:1478-1489. [PMID: 38354406 DOI: 10.1021/acsabm.3c00876] [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] [Indexed: 02/16/2024]
Abstract
A major obstacle to axonal regeneration following spinal cord injury (SCI) is neuroinflammation mediated by astrocytes and microglial cells. We previously demonstrated that graphene-based collagen hydrogels alone can decrease neuroinflammation in SCI. Their regenerative potential, however, is poorly understood and incomplete. Furthermore, stem cells have demonstrated both neuroprotective and regenerative properties in spinal cord regeneration, although there are constraints connected with the application of stem cell-based therapy. In this study, we have analyzed the regeneration capability of human bone marrow mesenchymal stem cell (BM-MSC)-loaded graphene-cross-linked collagen cryogels (Gr-Col) in a thoracic (T10-T11) hemisection model of SCI. Our study found that BM-MSC-loaded Gr-Col improves axonal regeneration, reduces neuroinflammation by decreasing astrocyte reactivity, and promotes M2 macrophage polarization. BM-MSC-loaded-Gr-Col demonstrated enhanced regenerative potential compared to Gr-Col and the injury group control. Next-generation sequencing (NGS) analysis revealed that BM-MSC-loaded-Gr-Col modulates the JAK2-STAT3 pathway, thus decreasing the reactive and scar-forming astrocyte phenotype. The decrease in neuroinflammation in the BM-MSC-loaded-Gr-Col group is attributed to the modulation of Notch/Rock and STAT5a/b and STAT6 signaling. Overall, Gene Set Enrichment Analysis suggests the promising role of BM-MSC-loaded-Gr-Col in promoting axonal regeneration after SCI by modulating molecular pathways such as the PI3/Akt pathway, focal adhesion kinase, and various inflammatory pathways.
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Affiliation(s)
- Gopal Agarwal
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Abhishek Roy
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Abhishek A Singh
- Department of Molecular Biology, Radboud University, Postbus 9101, Nijmegen 6500 HB, The Netherlands
| | - Hemant Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Amit Mandoli
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Ahmedabad, Gandhinagar, Gujarat 382355, India
| | - Akshay Srivastava
- Department of Medical Device, National Institute of Pharmaceutical Education and Research, Ahmedabad, Gandhinagar, Gujarat 382355, India
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Kou L, Chi X, Sun Y, Yin S, Wu J, Zou W, Wang Y, Jin Z, Huang J, Xiong N, Xia Y, Wang T. Circadian regulation of microglia function: Potential targets for treatment of Parkinson's Disease. Ageing Res Rev 2024; 95:102232. [PMID: 38364915 DOI: 10.1016/j.arr.2024.102232] [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: 07/17/2023] [Revised: 02/11/2024] [Accepted: 02/11/2024] [Indexed: 02/18/2024]
Abstract
Circadian rhythms are involved in the regulation of many aspects of the body, including cell function, physical activity and disease. Circadian disturbance often predates the typical symptoms of neurodegenerative diseases and is not only a non-motor symptom, but also one of the causes of their occurrence and progression. Glial cells possess circadian clocks that regulate their function to maintain brain development and homeostasis. Emerging evidence suggests that the microglial circadian clock is involved in the regulation of many physiological processes, such as cytokine release, phagocytosis, and nutritional and metabolic support, and that disruption of the microglia clock may affect multiple aspects of Parkinson's disease, especially neuroinflammation and α-synuclein processes. Herein, we review recent advances in the circadian control of microglia function in health and disease, and discuss novel pharmacological interventions for microglial clocks in neurodegenerative disorders.
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Affiliation(s)
- Liang Kou
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiaosa Chi
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yadi Sun
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Sijia Yin
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jiawei Wu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wenkai Zou
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yiming Wang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zongjie Jin
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jinsha Huang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Nian Xiong
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yun Xia
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Tao Wang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Zhang J, Hu D, Li L, Qu D, Shi W, Xie L, Jiang Q, Li H, Yu T, Qi C, Fu H. M2 Microglia-derived Exosomes Promote Spinal Cord Injury Recovery in Mice by Alleviating A1 Astrocyte Activation. Mol Neurobiol 2024:10.1007/s12035-024-04026-6. [PMID: 38367135 DOI: 10.1007/s12035-024-04026-6] [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: 10/23/2023] [Accepted: 02/06/2024] [Indexed: 02/19/2024]
Abstract
M2 microglia transplantation has previously demonstrated beneficial effects on spinal cord injury (SCI) by regulating neuroinflammation and enhancing neuronal survival. Exosomes (EXOs), secreted by almost all cell types, embody partial functions and properties of their parent cells. However, the effect of M2 microglia-derived EXOs (M2-EXOs) on SCI recovery and the underlying molecular mechanisms remain unclear. In this study, we isolated M2-EXOs and intravenously introduced them into mice with SCI. Considering the reciprocal communication between microglia and astroglia in both healthy and injured central nervous systems (CNSs), we subsequently focused on the influence of M2-EXOs on astrocyte phenotype regulation. Our findings indicated that M2-EXOs promoted neuron survival and axon preservation, reduced the lesion area, inhibited A1 astrocyte activation, and improved motor function recovery in SCI mice. Moreover, they inhibited the nuclear translocation of p65 and the activation of the NF-κB signalling pathway in A1 astrocytes. Therefore, our research suggests that M2-EXOs mitigate the activation of neurotoxic A1 astrocytes by inhibiting the NF-κB signalling pathway, thereby improving spinal tissue preservation and motor function recovery following SCI. This positions M2-EXOs as a promising therapeutic strategy for SCI.
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Affiliation(s)
- Jing Zhang
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Die Hu
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, 266071, China
| | - Liping Li
- Department of Bone Surgery, Qingdao Central Hospital, Qingdao, 266000, China
| | - Di Qu
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Weipeng Shi
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Lei Xie
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
- Department of Orthopedic Surgery, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), Qingdao, 266071, China
| | - Qi Jiang
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Haifeng Li
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Tengbo Yu
- Department of Orthopedic Surgery, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), Qingdao, 266071, China
- Institute of Sports Medicine and Health, Qingdao University, Qingdao, 266000, China
| | - Chao Qi
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
| | - Haitao Fu
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
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Zhang J, Zhang X, Jiang Q, Qu D, Hu Y, Qi C, Fu H. [Experimental study of M2 microglia transplantation promoting spinal cord injury repair in mice]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2024; 38:198-205. [PMID: 38385233 PMCID: PMC10882233 DOI: 10.7507/1002-1892.202311093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Objective To investigate the effect of M2 microglia (M2-MG) transplantation on spinal cord injury (SCI) repair in mice. Methods Primary MG were obtained from the cerebral cortex of 15 C57BL/6 mice born 2-3 days old by pancreatic enzyme digestion and identified by immunofluorescence staining of Iba1. Then the primary MG were co-cultured with interleukin 4 for 48 hours (experimental group) to induce into M2 phenotype and identified by immunofluorescence staining of Arginase 1 (Arg-1) and Iba1. The normal MG were harvested as control (control group). The dorsal root ganglion (DRG) of 5 C57BL/6 mice born 1 week old were co-cultured with M2-MG for 5 days to observe the axon length, the DRG alone was used as control. Forty-two 6-week-old female C57BL/6 mice were randomly divided into sham group ( n=6), SCI group ( n=18), and SCI+M2-MG group ( n=18). In sham group, only the laminae of T 10 level were removed; SCI group and SCI+M2-MG group underwent SCI modeling, and SCI+M2-MG group was simultaneously injected with M2-MG. The survival of mice in each group was observed after operation. At immediate (0), 3, 7, 14, 21, and 28 days after operation, the motor function of mice was evaluated by Basso Mouse Scale (BMS) score, and the gait was evaluated by footprint experiment at 28 days. The spinal cord tissue was taken after operation for immunofluorescence staining, in which glial fibrillary acidic protein (GFAP) staining at 7, 14, and 28 days was used to observe the injured area of the spinal cord, neuronal nuclei antigen staining at 28 days was used to observe the survival of neurons, and GFAP/C3 double staining at 7 and 14 days was used to observe the changes in the number of A1 astrocytes. Results The purity of MG in vitro reached 90%, and the most of the cells were polarized into M2 phenotype identified by Arg-1 immunofluorescence staining. M2-MG promoted the axon growth when co-cultured with DRGs in vitro ( P<0.05). All groups of mice survived until the experiment was completed. The hind limb motor function of SCI group and SCI+M2-MG group gradually recovered over time. Among them, the SCI+M2-MG group had significantly higher BMS scores than the SCI group at 21 and 28 days ( P<0.05), and the dragging gait significantly improved at 28 days, but it did not reach the level of the sham group. Immunofluorescence staining showed that compared with the SCI group, the SCI+M2-MG group had a smaller injury area at 7, 14, and 28 days, an increase in neuronal survival at 28 days, and a decrease in the number of A1 astrocytes at 7 and 14 days, with significant differences ( P<0.05). Conclusion M2-MG transplantation improves the motor function of the hind limbs of SCI mice by promoting neuron survival and axon regeneration. This neuroprotective effect is related to the inhibition of A1 astrocytes polarization.
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Affiliation(s)
- Jing Zhang
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Xiaoyue Zhang
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Qi Jiang
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Di Qu
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Yusheng Hu
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Chao Qi
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao Shandong, 266103, P. R. China
| | - Haitao Fu
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao Shandong, 266103, P. R. China
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10
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Yang K, Hu Y, Feng Y, Li K, Zhu Z, Liu S, Lin Y, Yu B. IGF-1R mediates crosstalk between nasopharyngeal carcinoma cells and osteoclasts and promotes tumor bone metastasis. J Exp Clin Cancer Res 2024; 43:46. [PMID: 38342894 PMCID: PMC10860326 DOI: 10.1186/s13046-024-02970-8] [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: 12/27/2023] [Accepted: 01/29/2024] [Indexed: 02/13/2024] Open
Abstract
BACKGROUND Nasopharyngeal carcinoma (NPC) poses a significant health burden in specific regions of Asia, and some of NPC patients have bone metastases at the time of initial diagnosis. Bone metastasis can cause pathologic fractures and pain, reducing patients' quality of life, and is associated with worse survival. This study aims to unravel the complex role of insulin-like growth factor 1 receptor (IGF-1R) in NPC bone metastasis, offering insights into potential therapeutic targets. METHODS We assessed IGF-1R expression in NPC cells and explored its correlation with bone metastasis. Experiments investigated the impact of osteoclast-secreted IGF-1 on the IGF-1R/AKT/S6 pathway in promoting NPC cell proliferation within the bone marrow. Additionally, the reciprocal influence of tumor-secreted Granulocyte-macrophage colony-stimulating factor (GM-CSF) on osteoclast differentiation and bone resorption was examined. The effects of IGF-1 neutralizing antibody, IGF-1R specific inhibitor (NVP-AEW541) and mTORC inhibitor (rapamycin) on nasopharyngeal carcinoma bone metastasis were also explored in animal experiments. RESULTS Elevated IGF-1R expression in NPC cells correlated with an increased tendency for bone metastasis. IGF-1, secreted by osteoclasts, activated the IGF-1R/AKT/S6 pathway, promoting NPC cell proliferation in the bone marrow. Tumor-secreted GM-CSF further stimulated osteoclast differentiation, exacerbating bone resorption. The IGF-1 neutralizing antibody, NVP-AEW541 and rapamycin were respectively effective in slowing down the rate of bone metastasis and reducing bone destruction. CONCLUSION The intricate interplay among IGF-1R, IGF-1, and GM-CSF highlights potential therapeutic targets for precise control of NPC bone metastasis, providing valuable insights for developing targeted interventions.
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Affiliation(s)
- Kaifan Yang
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Yanjun Hu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yuanyuan Feng
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Kaiqun Li
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ziyan Zhu
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Shuyi Liu
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Yanling Lin
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China.
| | - Bin Yu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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11
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Zhong J, He Y, Zhao Q, Luo H, Zhang Q, Tian Y, Liu Y, Yang C, Yin Y, Yu L, Pan L, Tan B. Low-Dose LPS Modulates Microglia/Macrophages Phenotypic Transformation to Amplify Rehabilitation Effects in Chronic Spinal Cord Injured (CSCI) Mice. Mol Neurobiol 2024:10.1007/s12035-024-03979-y. [PMID: 38311654 DOI: 10.1007/s12035-024-03979-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/20/2024] [Indexed: 02/06/2024]
Abstract
Spinal cord injury (SCI) results in stalled motor function recovery under the chronic phase. One of the reasons due to the presence of ongoing inflammation. Therefore, regulating the status of immune cells may help reopen the window for neural repair, which represents a potential therapeutic target. In this study, we aimed to investigate whether this could be achieved in mice with cervical 5 crush CSCI (4 W) by utilizing a concentration of 0.5 mg/kg of lipopolysaccharide (LPS) to stimulate microglia/macrophages. Additionally, the mice underwent rehabilitation training for another 6 weeks. Our results showed that systemic injection of LPS enhanced the effects of forelimb rehabilitation training, as evaluated through single pellet grasping (SPG). Electrophysiological studies revealed the restoration of cortical drive to the injured side's forelimb muscles in the training combined with LPS group. Tract tracing studies demonstrated the reconstruction of cortical innervation to the cervical spinal cord. Furthermore, the levels of pro-inflammatory phenotype markers, such as inducible nitric oxide synthase (INOS) and CD68, decreased, while the expression of anti-inflammatory phenotype markers, including arginase 1 (ARG-1) and CD206, increased. Importantly, this phenotypic switch in microglia/macrophages was accompanied by an increase in phagocytic activity markers as indicated by BODIPY + IBA1 + staining. Collectively, our data suggests that low-dose LPS improves the effects of rehabilitation training by regulating the phenotypic transformation of microglia/macrophages in CSCI. This study provides a fresh perspective and intervention direction for the clinical treatment of chronic spinal cord injuries.
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Affiliation(s)
- Juan Zhong
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Yingxi He
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Qin Zhao
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Haodong Luo
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Qing Zhang
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Yu Tian
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Yuan Liu
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Special War Wound, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Ce Yang
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Special War Wound, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Ying Yin
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Lehua Yu
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Lu Pan
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China.
| | - Botao Tan
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China.
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12
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Li M, Hu B, Wu Z, Wang Z, Weng J, Zheng H, Sun L. Sporopollenin exine capsules modulate the function of microglial cells. Biomater Sci 2024; 12:710-724. [PMID: 38099812 DOI: 10.1039/d3bm01154b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
Immune cells are the housekeepers of the human body. They protect the body from pathogens, cellular damage, and foreign matter. Proper activation of immune cells is of great significance to diseases such as infection, inflammation, and neurodegeneration. However, excessive activation of cells can be detrimental. An ideal biomaterial could enhance the cellular immune function without proinflammation. In this work, we used sporopollenin exine capsules (SEC) from pollen to promote functions of primary microglia, a typical resident immune cell of the brain. We found that microglia aggregated around SEC and did not undergo any proinflammation. SEC improved the viability, migration, phagocytosis, and anti-inflammatory ability of microglia. By exploring the underlying mechanism of microglial activation without the production of cytotoxic pro-inflammatory cytokines, we found that SEC protects microglia against inflammation induced by lipopolysaccharide (LPS), an immunostimulatory factor, through the toll-like receptor 4 (TLR4) signaling pathway in a myeloid differentiation factor 88-dependent manner. These findings might shed light on the potential application of SEC in microglia transplantation for treatment of microglia-associated degenerative central nervous system diseases.
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Affiliation(s)
- Mengwei Li
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, Fujian 361005, China.
| | - Banglian Hu
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China.
| | - Zhaojie Wu
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, Fujian 361005, China.
| | - Ziwei Wang
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China.
| | - Jian Weng
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, Fujian 361005, China.
| | - Honghua Zheng
- Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China.
| | - Liping Sun
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, Fujian 361005, China.
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13
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Guan P, Fan L, Zhu Z, Yang Q, Kang X, Li J, Zhang Z, Liu S, Liu C, Wang X, Xu J, Wang K, Sun Y. M2 microglia-derived exosome-loaded electroconductive hydrogel for enhancing neurological recovery after spinal cord injury. J Nanobiotechnology 2024; 22:8. [PMID: 38167113 PMCID: PMC10763283 DOI: 10.1186/s12951-023-02255-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/06/2023] [Indexed: 01/05/2024] Open
Abstract
Electroconductive hydrogels offer a promising avenue for enhancing the repair efficacy of spinal cord injuries (SCI) by restoring disrupted electrical signals along the spinal cord's conduction pathway. Nonetheless, the application of hydrogels composed of diverse electroconductive materials has demonstrated limited capacity to mitigate the post-SCI inflammatory response. Recent research has indicated that the transplantation of M2 microglia effectively fosters SCI recovery by attenuating the excessive inflammatory response. Exosomes (Exos), small vesicles discharged by cells carrying similar biological functions to their originating cells, present a compelling alternative to cellular transplantation. This investigation endeavors to exploit M2 microglia-derived exosomes (M2-Exos) successfully isolated and reversibly bonded to electroconductive hydrogels through hydrogen bonding for synergistic promotion of SCI repair to synergistically enhance SCI repair. In vitro experiments substantiated the significant capacity of M2-Exos-laden electroconductive hydrogels to stimulate the growth of neural stem cells and axons in the dorsal root ganglion and modulate microglial M2 polarization. Furthermore, M2-Exos demonstrated a remarkable ability to mitigate the initial inflammatory reaction within the injury site. When combined with the electroconductive hydrogel, M2-Exos worked synergistically to expedite neuronal and axonal regeneration, substantially enhancing the functional recovery of rats afflicted with SCI. These findings underscore the potential of M2-Exos as a valuable reparative factor, amplifying the efficacy of electroconductive hydrogels in their capacity to foster SCI rehabilitation.
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Affiliation(s)
- Pengfei Guan
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, the Third Affiliated Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Lei Fan
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Zhaobo Zhu
- Department of Orthopedic Surgery, Nanfang Hospital Baiyun Branch, Southern Medical University, Guangzhou, 510080, China
| | - Qinfeng Yang
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Xinchang Kang
- Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Junji Li
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, the Third Affiliated Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Zuyu Zhang
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, the Third Affiliated Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Shencai Liu
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Can Liu
- Department of Spine Surgery, Center for Orthopedic Surgery, the Third Affiliated Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Xuelian Wang
- The Operating Room of the Third Affiliated Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Jing Xu
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Kun Wang
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.
| | - Yongjian Sun
- Department of Pediatric Orthopedic, Center for Orthopedic Surgery, the Third Affiliated Hospital of Southern Medical University, Guangzhou, 510515, China.
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14
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Zhu D, Peng T, Zhang Z, Guo S, Su Y, Zhang K, Wang J, Liu C. Mesenchymal stem cells overexpressing XIST induce macrophage M2 polarization and improve neural stem cell homeostatic microenvironment, alleviating spinal cord injury. J Tissue Eng 2024; 15:20417314231219280. [PMID: 38223166 PMCID: PMC10785713 DOI: 10.1177/20417314231219280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 11/22/2023] [Indexed: 01/16/2024] Open
Abstract
Spinal cord injury (SCI) is a significant cause of disability worldwide, with limited treatment options. This study investigated the potential of bone marrow-derived mesenchymal stem cells (BMSCs) modified with XIST lentiviral vector to modulate macrophage polarization and affect neural stem cell (NSC) microenvironment reconstruction following SCI. Bioinformatics analysis revealed that MID1 might be crucial for BMSCs' treatment of SCI. XIST overexpression enriched Zmynd8 to the promoter region of MID1 and inhibited MID1 transcription, which promoted macrophage M2 polarization. In vitro experiments showed that BMSCs-XIST promoted NSC proliferation, migration, differentiation, and axonal growth by inducing macrophage M2 polarization, suppressing inflammation, and accelerating the re-establishment of the homeostatic microenvironment of NSCs. In vivo, animal experiments confirmed that BMSCs-XIST significantly alleviated SCI by promoting NSC differentiation and axon formation in the injured area. The study demonstrated the potential of XIST-overexpressing BMSCs for treating SCI by regulating macrophage polarization and homeostasis of the NSC microenvironment. These findings provide new insights into the development of stem cell-based therapies for SCI.
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Affiliation(s)
- Dan Zhu
- Hubei Key Laboratory of Diabetes and Angiopathy, Xianning Medical College, Hubei University of Science and Technology, Xianning, P.R. China
| | - Tie Peng
- Xianning Medical College, Hubei University of Science and Technology, Xianning, P.R. China
| | - Zhenwang Zhang
- Hubei Key Laboratory of Diabetes and Angiopathy, Xianning Medical College, Hubei University of Science and Technology, Xianning, P.R. China
| | - Shuang Guo
- Hubei Key Laboratory of Diabetes and Angiopathy, Xianning Medical College, Hubei University of Science and Technology, Xianning, P.R. China
| | - Ying Su
- Xianning Medical College, Hubei University of Science and Technology, Xianning, P.R. China
| | - Kangwei Zhang
- Xianning Medical College, Hubei University of Science and Technology, Xianning, P.R. China
| | - Jiawei Wang
- Hubei Key Laboratory of Diabetes and Angiopathy, Xianning Medical College, Hubei University of Science and Technology, Xianning, P.R. China
| | - Chao Liu
- Hubei Key Laboratory of Diabetes and Angiopathy, Xianning Medical College, Hubei University of Science and Technology, Xianning, P.R. China
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15
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Wang J, Tian F, Cao L, Du R, Tong J, Ding X, Yuan Y, Wang C. Macrophage polarization in spinal cord injury repair and the possible role of microRNAs: A review. Heliyon 2023; 9:e22914. [PMID: 38125535 PMCID: PMC10731087 DOI: 10.1016/j.heliyon.2023.e22914] [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: 03/22/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
The prevention, treatment, and rehabilitation of spinal cord injury (SCI) have always posed significant medical challenges. After mechanical injury, disturbances in microcirculation, edema formation, and the generation of free radicals lead to additional damage, impeding effective repair processes and potentially exacerbating further dysfunction. In this context, inflammatory responses, especially the activation of macrophages, play a pivotal role. Different phenotypes of macrophages have distinct effects on inflammation. Activation of classical macrophage cells (M1) promotes inflammation, while activation of alternative macrophage cells (M2) inhibits inflammation. The polarization of macrophages is crucial for disease healing. A non-coding RNA, known as microRNA (miRNA), governs the polarization of macrophages, thereby reducing inflammation following SCI and facilitating functional recovery. This study elucidates the inflammatory response to SCI, focusing on the infiltration of immune cells, specifically macrophages. It examines their phenotype and provides an explanation of their polarization mechanisms. Finally, this paper introduces several well-known miRNAs that contribute to macrophage polarization following SCI, including miR-155, miR-130a, and miR-27 for M1 polarization, as well as miR-22, miR-146a, miR-21, miR-124, miR-223, miR-93, miR-132, and miR-34a for M2 polarization. The emphasis is placed on their potential therapeutic role in SCI by modulating macrophage polarization, as well as the present developments and obstacles of miRNA clinical therapy.
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Affiliation(s)
- Jiawei Wang
- School and Hospital of Stomatology, Shanxi Medical University, Shanxi Taiyuan, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Taiyuan, China
| | - Feng Tian
- School and Hospital of Stomatology, Shanxi Medical University, Shanxi Taiyuan, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Taiyuan, China
| | - Lili Cao
- School and Hospital of Stomatology, Shanxi Medical University, Shanxi Taiyuan, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Taiyuan, China
| | - Ruochen Du
- Experimental Animal Center, Shanxi Medical University, Shanxi Taiyuan, China
| | - Jiahui Tong
- School and Hospital of Stomatology, Shanxi Medical University, Shanxi Taiyuan, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Taiyuan, China
| | - Xueting Ding
- Experimental Animal Center, Shanxi Medical University, Shanxi Taiyuan, China
| | - Yitong Yuan
- Experimental Animal Center, Shanxi Medical University, Shanxi Taiyuan, China
| | - Chunfang Wang
- School and Hospital of Stomatology, Shanxi Medical University, Shanxi Taiyuan, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Taiyuan, China
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16
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Shang J, Jiang C, Cai J, Chen Z, Jin S, Wang F, Liang W, Wang Y, Zhang S, Hu X. Knowledge Mapping of Macrophage in Spinal Cord Injury: A Bibliometric Analysis. World Neurosurg 2023; 180:e183-e197. [PMID: 37714458 DOI: 10.1016/j.wneu.2023.09.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Spinal cord injury (SCI) is a devastating condition, often leading to significant disability and impairment. As crucial immune cells, macrophages play a critical role in the pathophysiology of SCI. Understanding the current state of knowledge and research trends related to macrophages in SCI is crucial for developing effective therapeutic interventions. METHODS Using search strategies, we retrieved relevant articles from the Web of Science Core Collection (WOSCC), resulting in a robust dataset for analysis. VOSviewer, Citespace, and PRISM were employed for analysis and visualization. Various bibliometric indicators, including publication trends, citation analysis, co-authorship networks, and keyword analysis, were utilized to assess the scholarly landscape of macrophage research in SCI. RESULTS Our findings revealed a steady increase in publications over the past 33 years, indicating a growing interest in this field. We identified Popovich Phillip G was the most influential author, Ohio State University was the most influential institution, and identification of 2 distinct macrophage subsets with divergent effects causing either neurotoxicity or regeneration in the injured mouse spinal cord was the most influential paper in this field. CONCLUSIONS This bibliometric analysis provides a comprehensive overview of the current knowledge landscape and research trends regarding macrophages in SCI. Neuroinflammation and macrophage polarization, transplation and molecular mechanism were emerging research areas and novel directions. Our study serves as a valuable resource for researchers in spinal cord injury research and therapeutic development.
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Affiliation(s)
- JinXiang Shang
- Orthopedics, Affiliated Hospital of Shaoxing University, Shaoxing City, China
| | - Chao Jiang
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China
| | - Junhui Cai
- Orthopedics, Affiliated Hospital of Shaoxing University, Shaoxing City, China
| | - ZhuoLin Chen
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China
| | - SongTao Jin
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China
| | - Fei Wang
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China
| | - WenQing Liang
- Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine, Zhoushan City, China
| | - YaQing Wang
- Orthopedics, Affiliated Hospital of Shaoxing University, Shaoxing City, China
| | - SongOu Zhang
- School of Medicine, Ningbo University, Ningbo City, China
| | - Xujun Hu
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China.
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Quan H, Zhang R. Microglia dynamic response and phenotype heterogeneity in neural regeneration following hypoxic-ischemic brain injury. Front Immunol 2023; 14:1320271. [PMID: 38094292 PMCID: PMC10716326 DOI: 10.3389/fimmu.2023.1320271] [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: 10/12/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
Hypoxic-ischemic brain injury poses a significant threat to the neural niche within the central nervous system. In response to this pathological process, microglia, as innate immune cells in the central nervous system, undergo rapid morphological, molecular and functional changes. Here, we comprehensively review these dynamic changes in microglial response to hypoxic-ischemic brain injury under pathological conditions, including stroke, chronic intermittent hypoxia and neonatal hypoxic-ischemic brain injury. We focus on the regulation of signaling pathways under hypoxic-ischemic brain injury and further describe the process of microenvironment remodeling and neural tissue regeneration mediated by microglia after hypoxic-ischemic injury.
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Affiliation(s)
- Hongxin Quan
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan, China
| | - Runrui Zhang
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan, China
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Xu A, Yang Y, Shao Y, Jiang M, Sun Y, Feng B. FHL2 regulates microglia M1/M2 polarization after spinal cord injury via PARP14-depended STAT1/6 pathway. Int Immunopharmacol 2023; 124:110853. [PMID: 37708708 DOI: 10.1016/j.intimp.2023.110853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 08/21/2023] [Accepted: 08/21/2023] [Indexed: 09/16/2023]
Abstract
Neuronal apoptosis and inflammation exacerbate the secondary injury after spinal cord injury (SCI). Four and a half domains 2 (FHL2) is a multifunctional scaffold protein with tissue- and cell-type specific effects on the regulation of inflammation, but its role in SCI remains unclear. The T10 mouse spinal cord contusion model was established, and the mice were immediately injected with lentiviruses carrying FHL2 shRNA after SCI. The results showed that FHL2 expression was increased following SCI, and then gradually decreased. Moreover, FHL2 depletion aggravated functional impairment, neuronal necrosis, and enlarged lesion cavity areas in the injured spinal cord. FHL2 deficiency facilitated neuronal apoptosis by elevating cleaved caspase 3/9 expression, neuroinflammation by regulating microglia polarization, and bone loss. Indeed, FHL2 deficiency increased the secretion of TNF-α and IL-6, M1 microglia polarization, and the activation of STAT1 pathway but decreased the secretion of IL-10 and IL-4, M2 microglia polarization, and the activation of the STAT6 pathway in the spinal cord. In vitro, FHL2 silencing promoted LPS + IFN-γ-induced microglia M1 polarization through activating the STAT1 pathway and alleviated IL-4-induced microglia M2 polarization via inhibiting the STAT6 pathway. FHL2 positively regulated the expression of poly (ADP-ribose) polymerase family member 14 (PARP14) by promoting its transcription. PARP14 overexpression inhibited FHL2 silencing-induced microglia M1 polarization and relieved the inhibitory effect of FHL2 silencing on microglia M2 polarization. Collectively, the study suggests that FHL2 reduces the microglia M1/M2 polarization-mediated inflammation via PARP14-dependent STAT1/6 pathway and thereby improves functional recovery after SCI.
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Affiliation(s)
- Aihua Xu
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yang Yang
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yang Shao
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Manyu Jiang
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yongxin Sun
- Department of Rehabilitation Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Bo Feng
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang, Liaoning, China.
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19
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Hossein Geranmayeh M, Farokhi-Sisakht F, Sadigh-Eteghad S, Rahbarghazi R, Mahmoudi J, Farhoudi M. Simultaneous Pericytes and M2 Microglia Transplantation Improve Cognitive Function in Mice Model of mPFC Ischemia. Neuroscience 2023; 529:62-72. [PMID: 37591334 DOI: 10.1016/j.neuroscience.2023.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/27/2023] [Accepted: 08/04/2023] [Indexed: 08/19/2023]
Abstract
Cerebral ischemia is one of the major problems threatening global health. Many of the cerebral ischemia survivors would suffer from the physical and cognitive disabilities for their whole lifetime. Cell based-therapies have been introduced as a therapeutic approach for alleviating ischemia-enforced limitations. Photothrombotic stroke model was applied on the left medial prefrontal cortex (mPFC) of adult male BALB/c mice. Then, pericytes isolated from brain microvessels of adult male BALB/c mice, microglia isolated from brain cortices of the neonatal male BALB/c mice, and M2 phenotype shifted microglia by IL-4 treatment were used for transplantation into the injured area after 24 h of ischemia induction. The behavioural outcomes evaluated by social interaction and Barnes tests and the levels of growth associated protein (GAP)-43 and inflammatory cytokine interleukin (IL)-1 protein were assessed by western blotting 7 days after cell transplantation. Animals in both of the microglia + pericytes and microglia M2 + pericytes transplanted groups showed better performance in social memory as well as enhanced spatial learning and memory compared to ischemic controls. Also, improved escape latency was only observed in microglia M2 + pericytes (p < 0.01) group compared to ischemic controls. GAP-43 showed significant protein expression in microglia + pericytes and microglia M2 + pericytes groups compared to the control group. Conversely, IL-1 levels diminished in all of the pericytes microglia + pericytes, and microglia M2 + pericytes groups compared to the ischemic controls. Current study highlights efficiency of M2 microglia and pericytes combinatory transplantation therapeutic role on relieving ischemic stroke outcomes.
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Affiliation(s)
- Mohammad Hossein Geranmayeh
- Neurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cells Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | | | - Saeed Sadigh-Eteghad
- Neurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Rahbarghazi
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Javad Mahmoudi
- Neurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Farhoudi
- Neurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran.
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20
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Walsh CM, Wychowaniec JK, Costello L, Brougham DF, Dooley D. An In Vitro and Ex Vivo Analysis of the Potential of GelMA Hydrogels as a Therapeutic Platform for Preclinical Spinal Cord Injury. Adv Healthc Mater 2023; 12:e2300951. [PMID: 37114899 DOI: 10.1002/adhm.202300951] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Indexed: 04/29/2023]
Abstract
Spinal cord injury (SCI) is a devastating condition with no curative therapy currently available. Immunomodulation can be applied as a therapeutic strategy to drive alternative immune cell activation and promote a proregenerative injury microenvironment. Locally injected hydrogels carrying immunotherapeutic cargo directly to injured tissue offer an encouraging treatment approach from an immunopharmacological perspective. Gelatin methacrylate (GelMA) hydrogels are promising in this regard, however, detailed analysis on the immunogenicity of GelMA in the specific context of the SCI microenvironment is lacking. Here, the immunogenicity of GelMA hydrogels formulated with a translationally relevant photoinitiator is analyzed in vitro and ex vivo. 3% (w/v) GelMA, synthesized from gelatin type-A, is first identified as the optimal hydrogel formulation based on mechanical properties and cytocompatibility. Additionally, 3% GelMA-A does not alter the expression profile of key polarization markers in BV2 microglia or RAW264.7 macrophages after 48 h. Finally, it is shown for the first time that 3% GelMA-A can support the ex vivo culture of primary murine organotypic spinal cord slices for 14 days with no direct effect on glial fibrillary acidic protein (GFAP+ ) astrocyte or ionized calcium-binding adaptor molecule 1 (Iba-1+ ) microglia reactivity. This provides evidence that GelMA hydrogels can act as an immunotherapeutic hydrogel-based platform for preclinical SCI.
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Affiliation(s)
- Ciara M Walsh
- School of Medicine, Health Sciences Centre, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
- UCD Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - Jacek K Wychowaniec
- School of Chemistry, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
- AO Research Institute Davos, Clavadelerstrasse 8, Davos, 7270, Switzerland
| | - Louise Costello
- School of Medicine, Health Sciences Centre, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - Dermot F Brougham
- School of Chemistry, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - Dearbhaile Dooley
- School of Medicine, Health Sciences Centre, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
- UCD Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
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21
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Ding X, Zhang L, Zhang X, Qin Y, Yu K, Yang X. Intranasal Insulin Alleviates Traumatic Brain Injury by Inhibiting Autophagy and Endoplasmic Reticulum Stress-mediated Apoptosis Through the PI3K/Akt/mTOR Signaling Pathway. Neuroscience 2023; 529:23-36. [PMID: 37572876 DOI: 10.1016/j.neuroscience.2023.08.009] [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: 03/29/2023] [Revised: 07/18/2023] [Accepted: 08/04/2023] [Indexed: 08/14/2023]
Abstract
Intranasal insulin reduces lesion size and enhances memory capacity in traumatic brain injury (TBI) models, but the molecular mechanisms behind this neuroprotective action not yet understood. Here we used Feeney's free-falling method to construct TBI mouse models and administrated intranasal insulin, rapamycin, insulin and rapamycin, or normal saline to assess their effects on neurological functions, cerebral edema, and the expression of Iba1 in microglia through immunofluorescence assay. We also measured concentrations of interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) in the brain using enzyme immunosorbent assay, investigated apoptosis with TUNEL staining and Western blotting, and evaluated autophagy, endoplasmic reticulum (ER) stress, and PI3K/Akt/mTOR signaling pathway with Western blotting. The autophagosome was assessed through transmission electron microscopy. Our findings demonstrated that intranasal insulin promoted neurological recovery, decreased brain swelling, and reduced injury lesions on days 1, 3, and 7 post TBI. Moreover, intranasal insulin reduced microglia activation and the concentration of IL-1β or TNF-α on the same days. Through Western blotting and transmission electron microscopy, we observed that intranasal insulin suppressed autophagy while activating the PI3K/AKT/mTOR signaling pathway on days 1 and 3 post TBI. TUNEL assay and Western blotting also indicated that intranasal insulin inhibited ER stress-mediated apoptosis. Interestingly, the mTOR inhibitor rapamycin partially blocked the pro-autophagy and anti-apoptosis effects of intranasal insulin both on days 1 and 3 post TBI. Our results suggest that intranasal insulin can ameliorate TBI by regulating autophagy and ER stress-mediated apoptosis through the PI3K/AKT/mTOR signaling pathway, providing a promising therapeutic strategy for TBI.
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Affiliation(s)
- Xin Ding
- Department of Neurology, Chengdu Second People's Hospital, No. 2, Huatai Road, Chenghua District, Chengdu, Sichuan 610017, People's Republic of China
| | - Lili Zhang
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, No, 278, Middle Baoguang Avenue, Xindu District, Chengdu, Sichuan 610050, People's Republic of China
| | - Xinping Zhang
- Department of General Medicine, Chengdu Second People's Hospital, No. 2, Huatai Road, Chenghua District, Chengdu, Sichuan 610017, People's Republic of China
| | - Yang Qin
- Department of General Medicine, The General Hospital of Western Theatre Command, No. 270, Tianhui Road, Rongdu Avenue, Jinniu District, Chengdu, Sichuan 610083, People's Republic of China.
| | - Ke Yu
- Department of General Medicine, The General Hospital of Western Theatre Command, No. 270, Tianhui Road, Rongdu Avenue, Jinniu District, Chengdu, Sichuan 610083, People's Republic of China
| | - Xiaokun Yang
- Department of Emergency, The General Hospital of Western Theatre Command, No. 270, Tianhui Road, Rongdu Avenue, Jinniu District, Chengdu, Sichuan 610083, People's Republic of China
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22
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Fu J, Wu C, Xu G, Zhang J, Chen J, Chen C, Hong H, Xue P, Jiang J, Huang J, Ji C, Cui Z. Protective effect of TNIP2 on the inflammatory response of microglia after spinal cord injury in rats. Neuropeptides 2023; 101:102351. [PMID: 37329819 DOI: 10.1016/j.npep.2023.102351] [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: 02/03/2023] [Revised: 04/30/2023] [Accepted: 06/08/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND Spinal cord injury (SCI) is a devastating disease that can lead to tissue loss and neurological dysfunction. TNIP2 is a negative regulator of NF-κB signaling due to its capacity to bind A20 and suppress inflammatory cytokines-induced NF-κB activation. However, the anti-inflammatory role of TNIP2 in SCI remains unclear. Our study's intention was to evaluate the effect of TNIP2 on the inflammatory response of microglia after spinal cord injury in rats. METHODS HE staining and Nissl staining were performed on day 3 following SCI to analyze the histological changes. To further investigate the functional changes of TNIP2 after SCI, we performed immunofluorescence staining experiments. The effect of LPS on TNIP2 expression in BV2 cells was examined by western blot. The levels of TNF-α, IL-1β, and IL-6 in spinal cord tissues of rats with SCI and in BV2 cells with LPS were measured by using qPCR. RESULTS TNIP2 expression was closely associated with the pathophysiology of SCI in rats, and TNIP2 was involved in regulating functional changes in microglia. TNIP2 expression was increased during SCI in rats and that overexpression of TNIP2 inhibited M1 polarization and pro-inflammatory cytokine production in microglia, which might ultimately protect against inflammatory responses through the MAPK and NF-κB signaling pathways. CONCLUSIONS The present study provides evidence for a role of TNIP2 in the regulation of inflammation in SCI and suggests that induction of TNIP2 expression alleviated the inflammatory response of microglia.
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Affiliation(s)
- Jiawei Fu
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China; Key Laboratory for Restoration Mechanism and Clinical Translation of Spinal Cord Injury, Nantong 226001, Jiangsu, People's Republic of China; Research institute for Spine and spinal cord disease of Nantong University, 226001, Jiangsu, People's Republic of China
| | - Chunshuai Wu
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China; Key Laboratory for Restoration Mechanism and Clinical Translation of Spinal Cord Injury, Nantong 226001, Jiangsu, People's Republic of China; Research institute for Spine and spinal cord disease of Nantong University, 226001, Jiangsu, People's Republic of China
| | - Guanhua Xu
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China; Key Laboratory for Restoration Mechanism and Clinical Translation of Spinal Cord Injury, Nantong 226001, Jiangsu, People's Republic of China; Research institute for Spine and spinal cord disease of Nantong University, 226001, Jiangsu, People's Republic of China
| | - Jinlong Zhang
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China
| | - Jiajia Chen
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China
| | - Chu Chen
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China
| | - Hongxiang Hong
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China
| | - Pengfei Xue
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China
| | - Jiawei Jiang
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China
| | - Jiayi Huang
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China
| | - Chunyan Ji
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China; Key Laboratory for Restoration Mechanism and Clinical Translation of Spinal Cord Injury, Nantong 226001, Jiangsu, People's Republic of China; Research institute for Spine and spinal cord disease of Nantong University, 226001, Jiangsu, People's Republic of China
| | - Zhiming Cui
- The Affiliated Hospital 2 of Nantong University, Nantong University, The First People's Hospital of Nantong, Nantong 226001, Jiangsu, People's Republic of China; Key Laboratory for Restoration Mechanism and Clinical Translation of Spinal Cord Injury, Nantong 226001, Jiangsu, People's Republic of China; Research institute for Spine and spinal cord disease of Nantong University, 226001, Jiangsu, People's Republic of China.
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23
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Jiang C, Chen Z, Wang X, Zhang Y, Guo X, Fan H, Huang D, He Y, Tang X, Ai Y, Liu Y, Yang H, Hao D. Curcumin-activated Olfactory Ensheathing Cells Improve Functional Recovery After Spinal Cord Injury by Modulating Microglia Polarization Through APOE/TREM2/NF-κB Signaling Pathway. J Neuroimmune Pharmacol 2023; 18:476-494. [PMID: 37658943 PMCID: PMC10577109 DOI: 10.1007/s11481-023-10081-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: 01/17/2023] [Accepted: 08/02/2023] [Indexed: 09/05/2023]
Abstract
Transplantation of curcumin-activated olfactory ensheathing cells (aOECs) improved functional recovery in spinal cord injury (SCI) rats. Nevertheless, little is known considering the underlying mechanisms. At the present study, we investigated the promotion of regeneration and functional recovery after transplantation of aOECs into rats with SCI and the possible underlying molecular mechanisms. Primary OECs were prepared from the olfactory bulb of rats, followed by treatment with 1µM CCM at 7-10 days of culture, resulting in cell activation. Concomitantly, rat SCI model was developed to evaluate the effects of transplantation of aOECs in vivo. Subsequently, microglia were isolated, stimulated with 100 ng/mL lipopolysaccharide (LPS) for 24 h to polarize to M1 phenotype and treated by aOECs conditional medium (aOECs-CM) and OECs conditional medium (OECs-CM), respectively. Changes in the expression of pro-inflammatory and anti-inflammatory phenotypic markers expression were detected using western blotting and immunofluorescence staining, respectively. Finally, a series of molecular biological experiments including knock-down of triggering receptor expressed on myeloid cells 2 (TREM2) and analysis of the level of apolipoprotein E (APOE) expression were performed to investigate the underlying mechanism of involvement of CCM-activated OECs in modulating microglia polarization, leading to neural regeneration and function recovery. CCM-activated OECs effectively attenuated deleterious inflammation by regulating microglia polarization from the pro-inflammatory (M1) to anti-inflammatory (M2) phenotype in SCI rats and facilitated functional recovery after SCI. In addition, microglial polarization to M2 elicited by aOECs-CM in LPS-induced microglia was effectively reversed when TREM2 expression was downregulated. More importantly, the in vitro findings indicated that aOECs-CM potentiating LPS-induced microglial polarization to M2 was partially mediated by the TREM2/nuclear factor kappa beta (NF-κB) signaling pathway. Besides, the expression of APOE significantly increased in CCM-treated OECs. CCM-activated OECs could alleviate inflammation after SCI by switching microglial polarization from M1 to M2, which was likely mediated by the APOE/TREM2/NF-κB pathway, and thus ameliorated neurological function. Therefore, the present finding is of paramount significance to enrich the understanding of underlying molecular mechanism of aOECs-based therapy and provide a novel therapeutic approach for treatment of SCI.
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Affiliation(s)
- Chao Jiang
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
| | - Zhe Chen
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
| | - Xiaohui Wang
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
| | - Yongyuan Zhang
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
| | - Xinyu Guo
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
| | - Hong Fan
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, 710004 China
| | - Dageng Huang
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
| | - Yuqing He
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
| | - Xiangwen Tang
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Basic Medical School Academy, Shaanxi University of Traditional Chinese Medicine, Xianyang, 712046 China
| | - Yixiang Ai
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
| | - Youjun Liu
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
| | - Hao Yang
- Translational Medicine Center, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
| | - Dingjun Hao
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Xi’an, 710054 China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
- Department of spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University, Shaanxi Key Laboratory of Spine Bionic Treatment, Xi’an, 710054 China
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24
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Wang K, Su X, Song Q, Chen Z, Chen H, Han Y, Zhu C, Shen H. The circ_006573/miR-376b-3p Axis Advances Spinal Cord Functional Recovery after Injury by Modulating Vascular Regeneration. Mol Neurobiol 2023; 60:4983-4999. [PMID: 37209265 DOI: 10.1007/s12035-023-03357-0] [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: 08/11/2022] [Accepted: 04/18/2023] [Indexed: 05/22/2023]
Abstract
Abnormal expression of non-coding RNAs after spinal cord injury (SCI) is associated with pathophysiological outcomes. We bioinformatically predicted a circRNA-miRNA-mRNA axis in SCI. A total of 4690 mRNAs, 17 miRNAs, and 3928 circRNAs were differentially expressed, with co-expressed RNAs predicted to regulate pathways related to wound healing. Among the most highly differentially expressed circRNAs, circ_006573, but not circ_016395, weakened the viability and migration of rat aortic endothelial cells, and its biological effects were rescued with miR-376b-3p mimics. Furthermore, circ_006573 overexpression induced changes in Cebpb, IL-18, and Plscr1 expression that were reversed by miR-376b-3p. In a rat model, circ_006573 shRNA administration improved the pathological manifestations of SCI and ameliorated motor function. Moreover, the expression of CD31, CD34, and VEGF-A in spinal cord tissues was significantly elevated after circ_006573 shRNA treatment, indicating that circ_006573 may be involved in vascular regeneration and functional recovery after SCI. Thus, the circ_006573-miR-376b-3p axis offers a foundation for understanding pathophysiological mechanisms and predicting strategies for treating SCI.
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Affiliation(s)
- Kun Wang
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xinjin Su
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qingxin Song
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhi Chen
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hao Chen
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yingchao Han
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chao Zhu
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Hongxing Shen
- Department of Spine Surgery, Department of Orthopedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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25
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Su X, Huang L, Li S, Ying J, Zhao F, Wang S, Liu Q, Qu Y, Mu D. The RNA m6A modification might participate in microglial activation during hypoxic-ischemic brain damage in neonatal mice. Hum Genomics 2023; 17:78. [PMID: 37626401 PMCID: PMC10463984 DOI: 10.1186/s40246-023-00527-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: 08/25/2022] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND The RNA m6A modification has been implicated in multiple neurological diseases as well as macrophage activation. However, whether it regulates microglial activation during hypoxic-ischemic brain damage (HIBD) in neonates remains unknown. Here, we aim to examine whether the m6A modification is involved in modulating microglial activation during HIBD. We employed an oxygen and glucose deprivation microglial model for in vitro studies and a neonatal mouse model of HIBD. The brain tissue was subjected to RNA-seq to screen for significant changes in the mRNA m6A regulator. Thereafter, we performed validation and bioinformatics analysis of the major m6A regulators. RESULTS RNA-seq analysis revealed that, among 141 m6A regulators, 31 exhibited significant differential expression (FC (abs) ≥ 2) in HIBD mice. We then subjected the major m6A regulators Mettl3, Mettl14, Fto, Alkbh5, Ythdf1, and Ythdf2 to further validation, and the results showed that all were significantly downregulated in vitro and in vivo. GO analysis reveals that regulators are mainly involved in the regulation of cellular and metabolic processes. The KEGG results indicate the involvement of the signal transduction pathway. CONCLUSIONS Our findings demonstrate that m6A modification of mRNA plays a crucial role in the regulation of microglial activation in HIBD, with m6A-associated regulators acting as key modulators of microglial activation.
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Affiliation(s)
- Xiaojuan Su
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - Lingyi Huang
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China
- West China College of Stomatology/State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Shiping Li
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - Junjie Ying
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - Fengyan Zhao
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - Shaopu Wang
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - Qian Liu
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - Yi Qu
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - Dezhi Mu
- Department of Pediatrics/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), West China Second University Hospital, Sichuan University, Chengdu, 610041, China.
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26
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Chen X, Cui QQ, Hu XH, Ye J, Liu ZC, Mei YX, Wang F, Hu ZL, Chen JG. CD200 in dentate gyrus improves depressive-like behaviors of mice through enhancing hippocampal neurogenesis via alleviation of microglia hyperactivation. J Neuroinflammation 2023; 20:157. [PMID: 37391731 DOI: 10.1186/s12974-023-02836-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 06/16/2023] [Indexed: 07/02/2023] Open
Abstract
BACKGROUND Neuroinflammation and microglia play critical roles in the development of depression. Cluster of differentiation 200 (CD200) is an anti-inflammatory glycoprotein that is mainly expressed in neurons, and its receptor CD200R1 is primarily in microglia. Although the CD200-CD200R1 pathway is necessary for microglial activation, its role in the pathophysiology of depression remains unknown. METHODS The chronic social defeat stress (CSDS) with behavioral tests were performed to investigate the effect of CD200 on the depressive-like behaviors. Viral vectors were used to overexpress or knockdown of CD200. The levels of CD200 and inflammatory cytokines were tested with molecular biological techniques. The status of microglia, the expression of BDNF and neurogenesis were detected with immunofluorescence imaging. RESULTS We found that the expression of CD200 was decreased in the dentate gyrus (DG) region of mice experienced CSDS. Overexpression of CD200 alleviated the depressive-like behaviors of stressed mice and inhibition of CD200 facilitated the susceptibility to stress. When CD200R1 receptors on microglia were knocked down, CD200 was unable to exert its role in alleviating depressive-like behavior. Microglia in the DG brain region were morphologically activated after exposure to CSDS. In contrast, exogenous administration of CD200 inhibited microglia hyperactivation, alleviated neuroinflammatory response in hippocampus, and increased the expression of BDNF, which in turn ameliorated adult hippocampal neurogenesis impairment in the DG induced by CSDS. CONCLUSIONS Taken together, these results suggest that CD200-mediated alleviation of microglia hyperactivation contributes to the antidepressant effect of neurogenesis in dentate gyrus in mice.
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Affiliation(s)
- Xi Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qian-Qian Cui
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao-Hai Hu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jian Ye
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zi-Cun Liu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan-Xi Mei
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fang Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, China
- The Research Center for Depression, Tongji Medical College, Huazhong University of Science, Wuhan, 430030, China
- Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, China
| | - Zhuang-Li Hu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, China.
- The Research Center for Depression, Tongji Medical College, Huazhong University of Science, Wuhan, 430030, China.
- Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, China.
| | - Jian-Guo Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, China.
- The Research Center for Depression, Tongji Medical College, Huazhong University of Science, Wuhan, 430030, China.
- Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, China.
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27
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Hu X, Xu W, Ren Y, Wang Z, He X, Huang R, Ma B, Zhao J, Zhu R, Cheng L. Spinal cord injury: molecular mechanisms and therapeutic interventions. Signal Transduct Target Ther 2023; 8:245. [PMID: 37357239 DOI: 10.1038/s41392-023-01477-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/22/2023] [Accepted: 05/07/2023] [Indexed: 06/27/2023] Open
Abstract
Spinal cord injury (SCI) remains a severe condition with an extremely high disability rate. The challenges of SCI repair include its complex pathological mechanisms and the difficulties of neural regeneration in the central nervous system. In the past few decades, researchers have attempted to completely elucidate the pathological mechanism of SCI and identify effective strategies to promote axon regeneration and neural circuit remodeling, but the results have not been ideal. Recently, new pathological mechanisms of SCI, especially the interactions between immune and neural cell responses, have been revealed by single-cell sequencing and spatial transcriptome analysis. With the development of bioactive materials and stem cells, more attention has been focused on forming intermediate neural networks to promote neural regeneration and neural circuit reconstruction than on promoting axonal regeneration in the corticospinal tract. Furthermore, technologies to control physical parameters such as electricity, magnetism and ultrasound have been constantly innovated and applied in neural cell fate regulation. Among these advanced novel strategies and technologies, stem cell therapy, biomaterial transplantation, and electromagnetic stimulation have entered into the stage of clinical trials, and some of them have already been applied in clinical treatment. In this review, we outline the overall epidemiology and pathophysiology of SCI, expound on the latest research progress related to neural regeneration and circuit reconstruction in detail, and propose future directions for SCI repair and clinical applications.
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Affiliation(s)
- Xiao Hu
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Wei Xu
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Yilong Ren
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Zhaojie Wang
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Xiaolie He
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Runzhi Huang
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Bei Ma
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Jingwei Zhao
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Rongrong Zhu
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China.
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China.
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China.
| | - Liming Cheng
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China.
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China.
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China.
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Zhang Y, Miao Y, Xiong X, Tan J, Han Z, Chen F, Lei P, Zhang Q. Microglial exosomes alleviate intermittent hypoxia-induced cognitive deficits by suppressing NLRP3 inflammasome. Biol Direct 2023; 18:29. [PMID: 37312196 DOI: 10.1186/s13062-023-00387-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 06/01/2023] [Indexed: 06/15/2023] Open
Abstract
Intermittent hypoxia is the best predictor of developing cognitive decline and Alzheimer's disease progression in patients with obstructive sleep apnea. The nucleotide-binding oligomerization domain-like receptor 3 (NLRP3) inflammasome has been poorly studied as a regulator of neuroinflammation in cognitive impairment caused by intermittent hypoxia. As critical inflammatory cells, exosomes secreted by microglia have been found to affect the spread of pathologic proteins and neuropathology in neurodegenerative diseases. However, the effects of microglial exosomes on neuroinflammation and cognitive outcomes after intermittent hypoxia remain unclear. In this study, the role of miRNAs in microglial exosomes in improving cognitive deficits in mice exposed to intermittent hypoxia was investigated. We demonstrated that miR-146a-5p fluctuated over time in microglial exosomes of mice exposed to intermittent hypoxia for different periods of time, which could regulate neuronal NLRP3 inflammasome and neuroinflammation. In primary neurons, we found that miR-146a-5p regulated mitochondrial reactive oxygen species by targeting HIF1α, thus affecting the NLRP3 inflammasome and secretion of inflammatory factors. Similarly, further studies showed that inhibition of NLRP3 by administering overexpressed miR-146a-5p in microglial exosomes and MCC950 has improved neuroinflammation and cognitive dysfunction in mice after intermittent hypoxia. In conclusion, NLRP3 inflammasome may be a regulatory target for ameliorating cognitive impairment caused by intermittent hypoxia, and microglial exosomal miR-146a-5p may be a promising therapeutic strategy.
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Affiliation(s)
- Yaodan Zhang
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Yuyang Miao
- Tianjin Medical University, Tianjin, 300052, China
| | - Xiangyang Xiong
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Jin Tan
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China
| | - Zhaoli Han
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China
| | - Fanglian Chen
- Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Ping Lei
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China.
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, 300052, China.
| | - Qiang Zhang
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Anshan Road No. 154, Tianjin, 300052, China.
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Martínez-Moreno CG, Calderón-Vallejo D, Díaz-Galindo C, Hernández-Jasso I, Olivares-Hernández JD, Ávila-Mendoza J, Epardo D, Balderas-Márquez JE, Urban-Sosa VA, Baltazar-Lara R, Carranza M, Luna M, Arámburo C, Quintanar JL. Gonadotropin-releasing hormone and growth hormone act as anti-inflammatory factors improving sensory recovery in female rats with thoracic spinal cord injury. Front Neurosci 2023; 17:1164044. [PMID: 37360158 PMCID: PMC10288327 DOI: 10.3389/fnins.2023.1164044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 05/15/2023] [Indexed: 06/28/2023] Open
Abstract
The potential for novel applications of classical hormones, such as gonadotropin-releasing hormone (GnRH) and growth hormone (GH), to counteract neural harm is based on their demonstrated neurotrophic effects in both in vitro and in vivo experimental models and a growing number of clinical trials. This study aimed to investigate the effects of chronic administration of GnRH and/or GH on the expression of several proinflammatory and glial activity markers in damaged neural tissues, as well as on sensory recovery, in animals submitted to thoracic spinal cord injury (SCI). Additionally, the effect of a combined GnRH + GH treatment was examined in comparison with single hormone administration. Spinal cord damage was induced by compression using catheter insufflation at thoracic vertebrae 10 (T10), resulting in significant motor and sensory deficits in the hindlimbs. Following SCI, treatments (GnRH, 60 μg/kg/12 h, IM; GH, 150 μg/kg/24 h, SC; the combination of both; or vehicle) were administered during either 3 or 5 weeks, beginning 24 h after injury onset and ending 24 h before sample collection. Our results indicate that a chronic treatment with GH and/or GnRH significantly reduced the expression of proinflammatory (IL6, IL1B, and iNOS) and glial activity (Iba1, CD86, CD206, vimentin, and GFAP) markers in the spinal cord tissue and improved sensory recovery in the lesioned animals. Furthermore, we found that the caudal section of the spinal cord was particularly responsive to GnRH or GH treatment, as well as to their combination. These findings provide evidence of an anti-inflammatory and glial-modulatory effect of GnRH and GH in an experimental model of SCI and suggest that these hormones can modulate the response of microglia, astrocytes, and infiltrated immune cells in the spinal cord tissue following injury.
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Affiliation(s)
- Carlos Guillermo Martínez-Moreno
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - Denisse Calderón-Vallejo
- Departamento de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, México
| | - Carmen Díaz-Galindo
- Departamento de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, México
| | - Irma Hernández-Jasso
- Departamento de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, México
| | - Juan David Olivares-Hernández
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - José Ávila-Mendoza
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - David Epardo
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - Jerusa Elienai Balderas-Márquez
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - Valeria Alejandra Urban-Sosa
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - Rosario Baltazar-Lara
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - Martha Carranza
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - Maricela Luna
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - Carlos Arámburo
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, México
| | - José Luis Quintanar
- Departamento de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, México
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Li S, Wang Y, Wang S, Xie J, Fu T, Li S. In situ gelling hydrogel loaded with berberine liposome for the treatment of biofilm-infected wounds. Front Bioeng Biotechnol 2023; 11:1189010. [PMID: 37324421 PMCID: PMC10266532 DOI: 10.3389/fbioe.2023.1189010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 05/22/2023] [Indexed: 06/17/2023] Open
Abstract
Background: In recent years, the impact of bacterial biofilms on traumatic wounds and the means to combat them have become a major research topic in the field of medicine. The eradication of biofilms formed by bacterial infections in wounds has always been a huge challenge. Herein, we developed a hydrogel with the active ingredient berberine hydrochloride liposomes to disrupt the biofilm and thereby accelerate the healing of infected wounds in mice. Methods: We determined the ability of berberine hydrochloride liposomes to eradicate the biofilm by means of studies such as crystalline violet staining, measuring the inhibition circle, and dilution coating plate method. Encouraged by the in vitro efficacy, we chose to coat the berberine hydrochloride liposomes on the Poloxamer range of in-situ thermosensitive hydrogels to allow fuller contact with the wound surface and sustained efficacy. Eventually, relevant pathological and immunological analyses were carried out on wound tissue from mice treated for 14 days. Results: The final results show that the number of wound tissue biofilms decreases abruptly after treatment and that the various inflammatory factors in them are significantly reduced within a short period. In the meantime, the number of collagen fibers in the treated wound tissue, as well as the proteins involved in healing in the wound tissue, showed significant differences compared to the model group. Conclusion: From the results, we found that berberine liposome gel can accelerate wound healing in Staphylococcus aureus infections by inhibiting the inflammatory response and promoting re-epithelialization as well as vascular regeneration. Our work exemplifies the efficacy of liposomal isolation of toxins. This innovative antimicrobial strategy opens up new perspectives for tackling drug resistance and fighting wound infections.
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Affiliation(s)
- Sipan Li
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yongan Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Siting Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jianjun Xie
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Tingming Fu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Shaoguang Li
- Microsurgery Department of Senior Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, Beijing, China
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31
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Shafqat A, Albalkhi I, Magableh HM, Saleh T, Alkattan K, Yaqinuddin A. Tackling the glial scar in spinal cord regeneration: new discoveries and future directions. Front Cell Neurosci 2023; 17:1180825. [PMID: 37293626 PMCID: PMC10244598 DOI: 10.3389/fncel.2023.1180825] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/08/2023] [Indexed: 06/10/2023] Open
Abstract
Axonal regeneration and functional recovery are poor after spinal cord injury (SCI), typified by the formation of an injury scar. While this scar was traditionally believed to be primarily responsible for axonal regeneration failure, current knowledge takes a more holistic approach that considers the intrinsic growth capacity of axons. Targeting the SCI scar has also not reproducibly yielded nearly the same efficacy in animal models compared to these neuron-directed approaches. These results suggest that the major reason behind central nervous system (CNS) regeneration failure is not the injury scar but a failure to stimulate axon growth adequately. These findings raise questions about whether targeting neuroinflammation and glial scarring still constitute viable translational avenues. We provide a comprehensive review of the dual role of neuroinflammation and scarring after SCI and how future research can produce therapeutic strategies targeting the hurdles to axonal regeneration posed by these processes without compromising neuroprotection.
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32
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Janzadeh A, Ramezani F, Yousefi S, Hamblin MR, Mojarad N, Nasirinezhad F. Time-dependent photobiomodulation management of neuropathic pain induced by spinal cord injury in male rats. Lasers Med Sci 2023; 38:120. [PMID: 37160475 DOI: 10.1007/s10103-023-03722-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 01/16/2023] [Indexed: 05/11/2023]
Abstract
Neuropathic pain (NP) following spinal cord injury (SCI) often lasts for a long time and causes a range of problems that reduce the quality of life. Current treatments are not generally effective; however, photobiomodulation therapy (PBMT) has made some progress in this area. Due to the novelty of this treatment, standard therapeutic protocols have not yet been agreed upon. In the present study, we compare the analgesic effect of two PBMT protocols (2 and 4 weeks of radiation). A total of thirty-two adult male Wistar rats were divided into four groups: control, SCI, 2 W PBMT, and 4 W PBMT. SCI was induced by an aneurism clip and PBMT used a 660-nm, initiated 30 min post-SCI, and continued daily for 2 or 4 weeks. Functional recovery, hyperalgesia, and allodynia were measured weekly. At the end of the study, the Gad65, interleukin 1-alpha (IL1α), interleukin 10 (IL10), IL4, and purinergic receptor (P2xR and P2yR) expressions were measured. Data were analyzed by Prism6. The results showed PBM irradiation for 2 and 4 weeks had the same effects in improving hyperalgesia. In the case of allodynia and functional recovery, 4 W PBMT was more effective (p<0.01). 4 W PBMT increased the Gad65 expression (p <0.001) and reduced P2Y4R (p <0.05) compared to SCI animals. The effects of 2 and 4 W PBMT were the same for IL1α, IL10, and P2X3 receptors. 4 W PBMT was more effective in reducing the complications of SCI such as pain and disability. PBMT therapy is an effective method aimed at immune system function modulation to reduce NP and motor dysfunction.
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Affiliation(s)
- Atousa Janzadeh
- Radiation Biology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Ramezani
- Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sogol Yousefi
- Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran
| | - Michael R Hamblin
- Laser Research Center, Faculty of Health Science, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Negin Mojarad
- Program in Neuroscience, Central Michigan University, Mt. Pleasant, MI, 48859, USA
| | - Farinaz Nasirinezhad
- Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran.
- Department of Physiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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Fu XX, Chen SY, Lian HW, Deng Y, Duan R, Zhang YD, Jiang T. The TREM2 H157Y Variant Influences Microglial Phagocytosis, Polarization, and Inflammatory Cytokine Release. Brain Sci 2023; 13:brainsci13040642. [PMID: 37190607 DOI: 10.3390/brainsci13040642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/04/2023] [Accepted: 04/07/2023] [Indexed: 05/17/2023] Open
Abstract
Previously, we reported that H157Y, a rare coding variant on exon 3 of the triggering receptor expressed on myeloid cells 2 gene (TREM2), was associated with Alzheimer's disease (AD) risk in a Han Chinese population. To date, how this variant increases AD risk has remained unclear. In this study, using CRISPR-Cas9-engineered BV2 microglia, we tried to investigate the influence of the Trem2 H157Y variant on AD-related microglial functions. For the first time, we revealed that the Trem2 H157Y variant inhibits microglial phagocytosis of amyloid-β, promotes M1-type polarization of microglia, and facilitates microglial release of inflammatory cytokines, including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α. These findings provide new insights into the cellular mechanisms by which the TREM2 H157Y variant elevates the risk of AD.
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Affiliation(s)
- Xin-Xin Fu
- Department of Neurology, Nanjing First Hospital, China Pharmaceutical University, No.639 Longmian Road, Nanjing 211100, China
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No.68 Changle Road, Nanjing 210006, China
| | - Shuai-Yu Chen
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No.68 Changle Road, Nanjing 210006, China
| | - Hui-Wen Lian
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No.68 Changle Road, Nanjing 210006, China
| | - Yang Deng
- Department of Neurology, Nanjing First Hospital, China Pharmaceutical University, No.639 Longmian Road, Nanjing 211100, China
| | - Rui Duan
- Department of Neurology, Nanjing First Hospital, China Pharmaceutical University, No.639 Longmian Road, Nanjing 211100, China
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No.68 Changle Road, Nanjing 210006, China
| | - Ying-Dong Zhang
- Department of Neurology, Nanjing First Hospital, China Pharmaceutical University, No.639 Longmian Road, Nanjing 211100, China
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No.68 Changle Road, Nanjing 210006, China
| | - Teng Jiang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No.68 Changle Road, Nanjing 210006, China
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34
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Cellular and Molecular Mechanisms Underly the Combined Treatment of Fasudil and Bone Marrow Derived-Neuronal Stem Cells in a Parkinson's Disease Mouse Model. Mol Neurobiol 2023; 60:1826-1835. [PMID: 36580198 DOI: 10.1007/s12035-022-03173-y] [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: 08/04/2022] [Accepted: 12/04/2022] [Indexed: 12/30/2022]
Abstract
Bone marrow-derived neural stem cells (BM-NSCs) have shed light on novel therapeutic approaches for PD with the potential to halt or even reverse disease progression. Various strategies have been developed to promote therapeutic efficacy via optimizing implanted cells and the microenvironment of transplantation in the central nervous system (CNS). This current study further proved that the combination of fasudil, a Rho-kinase inhibitor, and BM-NSCs exhibited a synergetic effect on restoring neuron loss in the MPTP-PD mice model. It simultaneously unveiled cellular mechanisms underlying synergistic neuron-protection effects of fasudil and BM-NSCs, which included promoting the proliferation, and migration of endogenous NSCs, and contributing to microglia shift into the M2 phenotype. Corresponding molecular mechanisms were observed, including the inhibition of inflammatory responses, the elevation of neurotrophic factors, and the induction of WNT/β-catenin and PI3K/Akt/mTOR signaling pathways. Our study provides evidence for the co-intervention of BM-NSCs and fasudil as a promising therapeutic method with enhanced efficacy in treating neurodegenerative diseases.
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Chang J, Qian Z, Wang B, Cao J, Zhang S, Jiang F, Kong R, Yu X, Cao X, Yang L, Chen H. Transplantation of A2 type astrocytes promotes neural repair and remyelination after spinal cord injury. Cell Commun Signal 2023; 21:37. [PMID: 36797790 PMCID: PMC9936716 DOI: 10.1186/s12964-022-01036-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 12/28/2022] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND Limited progress in terms of an effective treatment for spinal cord injury (SCI) emphasizes the urgent need for novel therapies. As a vital central nervous system component, the resident astrocytes play crucial roles in regulating recovery after SCI. In this study, recovery after SCI was compared following the transplantation of either A1 or A2 astrocytes. A1 astrocytes are harmful as they upregulate the neurotoxic classical complement cascade genes. Conversely, A2 astrocytes are characterized as neuroprotective as they upregulate the production of many neurotrophic factors. METHODS We used different supernatant obtained from microglia stimulated with lipopolysaccharide or interleukin-4 to generate A1 and A2 astrocytes. We detected the influence of astrocytes on neurons by co-culturing A1 and A2 astrocytes with neurons. We transplanted astrocytes into the lesion site of the spinal cord and assessed lesion progression, neural restoration, glia formation and locomotor recovery. RESULTS Astrocytes were polarized into A1 and A2 phenotypes following culture in the supernatant obtained from microglia stimulated with lipopolysaccharide or interleukin-4, respectively. Furthermore, co-culturing A2 astrocytes with neurons significantly suppressed glutamate-induced neuronal apoptosis and promoted the degree of neuron arborization. Transplantation of these A2 astrocytes into the lesion site of the spinal cord of mice significantly improved motor function recovery, preserved spared supraspinal pathways, decreased glia scar deposition, and increased neurofilament formation at the site of injury compared to the transplantation of A1 astrocytes. Additionally, enhanced A2 astrocytes with potentially beneficial A2-like genes were also detected in the A2 group. Moreover, luxol fast blue staining and electron microscopy indicated increased preservation of myelin with organized structure after transplantation of A2 astrocytes than of A1 astrocytes. CONCLUSIONS A2 astrocyte transplantation could be a promising potential therapy for SCI. Video abstract.
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Affiliation(s)
- Jie Chang
- Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, China.,Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, China
| | - Zhanyang Qian
- Spine Center, Zhongda Hospital of Southeast University, Nanjing, Jiangsu, China
| | - Binyu Wang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, China
| | - Jiang Cao
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, China
| | - Sheng Zhang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, China
| | - Fan Jiang
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, China
| | - Renyi Kong
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, China
| | - Xiao Yu
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, China
| | - Xiaojian Cao
- Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu, China.
| | - Lei Yang
- Department of Orthopedics, Taizhou People's Hospital, Nanjing Medical University, No. 366 Taihu Road, Taizhou, 225300, Jiangsu, China. .,School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Hongtao Chen
- Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, China.
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Shi Y, Liu Y, Zhang B, Li X, Lin J, Yang C. Human Menstrual Blood-Derived Endometrial Stem Cells Promote Functional Recovery by Improving the Inflammatory Microenvironment in a Mouse Spinal Cord Injury Model. Cell Transplant 2023; 32:9636897231154579. [PMID: 36786359 PMCID: PMC9932767 DOI: 10.1177/09636897231154579] [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] [Indexed: 02/15/2023] Open
Abstract
Spinal cord injury (SCI) is a traumatic injury of the central nervous system. Because neurons are damaged and difficult to regenerate after SCI, its repair remains challenging. However, recent research on stem cell therapy have favored its use after SCI. In this study, based on the establishment of a mouse SCI model, human menstrual blood-derived endometrial stem cells (MenSCs) were intrathecally injected to explore the role and molecular mechanism of MenSCs in SCI. MenSCs were transplanted following SCI in the animal model, and behavioral evaluations showed that MenSC transplantation improved functional recovery. Therefore, samples were collected after 7 days, and transcriptome sequencing was performed. Gene Ontology (GO) enrichment analysis revealed that SCI is closely related to immune system processes. After transplantation of MenSCs, the immune response was significantly activated. In the Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis, MenSC transplantation was found to be closely related to Th1, Th2, and Th17 cell differentiation pathways. Neuronal damage and glial cell proliferation and activation in the different groups were detected by fluorescence immunohistochemistry and Western blotting 7 days after SCI. Simultaneously, the activation of different types of microglia was detected and the expression of pro-inflammatory and anti-inflammatory factors was quantitatively analyzed. The results showed that MenSC transplantation and sonic hedgehog (Shh)-induced MenSCs accelerated neuronal recovery at the injured site, inhibited the formation of glial cells and microglial activation at the injured site, inhibited the expression of inflammatory factors, and improved the inflammatory microenvironment to achieve functional recovery of SCI. This study provides an experimental basis for the study of the role and molecular mechanism of MenSCs in SCI repair, and a reference for the role of Shh-induced MenSCs in SCI repair.
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Affiliation(s)
- Yaping Shi
- Stem Cells and Biotherapy Engineering
Research Center of Henan, National Joint Engineering Laboratory of Stem Cells and
Biotherapy, School of Life Science and Technology, Xinxiang Medical University,
Xinxiang, China
| | - Yunfei Liu
- Stem Cells and Biotherapy Engineering
Research Center of Henan, National Joint Engineering Laboratory of Stem Cells and
Biotherapy, School of Life Science and Technology, Xinxiang Medical University,
Xinxiang, China
| | - Bichao Zhang
- Stem Cells and Biotherapy Engineering
Research Center of Henan, National Joint Engineering Laboratory of Stem Cells and
Biotherapy, School of Life Science and Technology, Xinxiang Medical University,
Xinxiang, China
| | - Xiaoying Li
- Stem Cells and Biotherapy Engineering
Research Center of Henan, National Joint Engineering Laboratory of Stem Cells and
Biotherapy, School of Life Science and Technology, Xinxiang Medical University,
Xinxiang, China
| | - Juntang Lin
- Stem Cells and Biotherapy Engineering
Research Center of Henan, National Joint Engineering Laboratory of Stem Cells and
Biotherapy, School of Life Science and Technology, Xinxiang Medical University,
Xinxiang, China,Henan Key Laboratory of Medical Tissue
Regeneration, Xinxiang Medical University, Xinxiang, China
| | - Ciqing Yang
- Stem Cells and Biotherapy Engineering
Research Center of Henan, National Joint Engineering Laboratory of Stem Cells and
Biotherapy, School of Life Science and Technology, Xinxiang Medical University,
Xinxiang, China,Henan Key Laboratory of Medical Tissue
Regeneration, Xinxiang Medical University, Xinxiang, China,Henan Key Laboratory of
Neurorestoratology, The First Affiliated Hospital of Xinxiang Medical University,
Xinxiang, China,Ciqing Yang, Stem Cells and Biotherapy
Engineering Research Center of Henan, National Joint Engineering Laboratory of
Stem Cells and Biotherapy, School of Life Science and Technology, Xinxiang
Medical University, Xinxiang 453003, China.
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Gu G, Zhu B, Ren J, Song X, Fan B, Ding H, Shang J, Wu H, Li J, Wang H, Li J, Wei Z, Feng S. Ang-(1-7)/MasR axis promotes functional recovery after spinal cord injury by regulating microglia/macrophage polarization. Cell Biosci 2023; 13:23. [PMID: 36739421 PMCID: PMC9899400 DOI: 10.1186/s13578-023-00967-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 01/19/2023] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Inflammatory response is an essential part of secondary injury after spinal cord injury (SCI). During this period, the injury may be exacerbated through the release of a large number of inflammatory factors and the polarization of infiltrating macrophages and microglia towards M1. Ang-(1-7), mainly generated by Ang II via angiotensin-converting enzyme 2 (ACE2), can specifically bind to the G protein-coupled receptor Mas (MasR) and plays an important role in regulating inflammation and alleviating oxidative stress. METHODS We aimed to investigate whether activating the Ang-(1-7)/MasR axis in rats after SCI can regulate local neuroinflammation to achieve functional recovery and obtain its potential mechanism. MasR expression of bone marrow-derived macrophages was determined by Western blot. Immunofluorescence, Western blot, Flow cytometry, and RT-qPCR were applied to evaluate the polarization of Ang-(1-7) on macrophages and the regulation of inflammatory cytokines. Previous evaluation of the spinal cord and bladder after SCI was conducted by hematoxylin-eosin staining, Basso, Beattie, and Bresnahan (BBB) score, inclined plate test, electrophysiology, and catwalk were used to evaluate the functional recovery of rats. RESULTS MasR expression increased in macrophages under inflammatory conditions and further elevated after Ang-(1-7) treatment. Both in vivo and in vitro results confirmed that Ang-(1-7) could regulate the expression of inflammatory cytokines by down-regulating proinflammatory cytokines and up-regulating anti-inflammatory cytokines, and bias the polarization direction of microglia/macrophages to M2 phenotypic. After SCI, Ang-(1-7) administration in situ led to better histological and functional recovery in rats, and this recovery at least partly involved the TLR4/NF-κB signaling pathway. CONCLUSION As shown in our data, activating Ang-(1-7)/MasR axis can effectively improve the inflammatory microenvironment after spinal cord injury, promote the polarization of microglia/macrophages towards the M2 phenotype, and finally support the recovery of motor function. Therefore, we suggest using Ang-(1-7) as a feasible treatment strategy for spinal cord injury to minimize the negative consequences of the inflammatory microenvironment after spinal cord injury.
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Affiliation(s)
- Guangjin Gu
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Bin Zhu
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Jie Ren
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Xiaomeng Song
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Baoyou Fan
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Han Ding
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Jun Shang
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Heng Wu
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Junjin Li
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Hongda Wang
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Jinze Li
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China
| | - Zhijian Wei
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China ,Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong China
| | - Shiqing Feng
- grid.412645.00000 0004 1757 9434Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, National Spinal Cord Injury International Cooperation Base, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin, 300052 China ,Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong China
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Ren J, Zhu B, Gu G, Zhang W, Li J, Wang H, Wang M, Song X, Wei Z, Feng S. Schwann cell-derived exosomes containing MFG-E8 modify macrophage/microglial polarization for attenuating inflammation via the SOCS3/STAT3 pathway after spinal cord injury. Cell Death Dis 2023; 14:70. [PMID: 36717543 PMCID: PMC9887051 DOI: 10.1038/s41419-023-05607-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 01/31/2023]
Abstract
Macrophage/microglia polarization acts as an important part in regulating inflammatory responses in spinal cord injury (SCI). However, the regulation of inflammation of Schwann cell-derived exosomes (SCDEs) for SCI repair is still unclear. Therefore, we intend to find out the effect of SCDEs on regulating the inflammation related to macrophage polarization during the recovery of SCI. Firstly, the thesis demonstrated that SCDEs could attenuate the LPS- inflammation in BMDMs by suppressing M1 polarization and stimulating M2 polarization. Similarly, SCDEs improved functional recovery of female Wistar rats of the SCI contusion model according to BBB (Basso, Beattie, and Bresnahan) score, electrophysiological assay, and the gait analysis system of CatWalk XT. Moreover, MFG-E8 was verified as the main component of SCDEs to improve the inflammatory response by proteomic sequencing and lentiviral transfection. Improvement of the inflammatory microenvironment also inhibited neuronal apoptosis. The knockout of MFG-E8 in SCs can reverse the anti-inflammatory effects of SCDEs treatment. The SOCS3/STAT3 signaling pathway was identified to participate in upregulating M2 polarization induced by MFG-E8. In conclusion, our findings will enrich the mechanism of SCDEs in repairing SCI and provide potential applications and new insights for the clinical translation of SCDEs treatment for SCI.
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Affiliation(s)
- Jie Ren
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Bin Zhu
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Guangjin Gu
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Wencan Zhang
- Department of Orthopedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong, China
| | - Junjin Li
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Hongda Wang
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Min Wang
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Xiaomeng Song
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
| | - Zhijian Wei
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
- Department of Orthopedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong, China.
| | - Shiqing Feng
- National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
- Department of Orthopedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong, China.
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Huang T, Wu J, Mu J, Gao J. Advanced Therapies for Traumatic Central Nervous System Injury: Delivery Strategy Reinforced Efficient Microglial Manipulation. Mol Pharm 2023; 20:41-56. [PMID: 36469398 DOI: 10.1021/acs.molpharmaceut.2c00605] [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: 12/12/2022]
Abstract
Traumatic central nervous system (CNS) injuries, including spinal cord injury and traumatic brain injury, are challenging enemies of human health. Microglia, the main component of the innate immune system in CNS, can be activated postinjury and are key participants in the pathological procedure and development of CNS trauma. Activated microglia can be typically classified into pro-inflammatory (M1) and anti-inflammatory (M2) phenotypes. Reducing M1 polarization while promoting M2 polarization is thought to be promising for CNS injury treatment. However, obstacles such as the low permeability of the blood-brain barrier and short retention time in circulation limit the therapeutic outcomes of administrated drugs, and rational delivery strategies are necessary for efficient microglial regulation. To this end, proper administration methods and delivery systems like nano/microcarriers and scaffolds are investigated to augment the therapeutic effects of drugs, while some of these delivery systems have self-efficacies in microglial manipulation. Besides, systems based on cell and cell-derived exosomes also show impressive effects, and some underlying targeting mechanisms of these delivery systems have been discovered. In this review, we introduce the roles of microglia play in traumatic CNS injuries, discuss the potential targets for the polarization regulation of microglial phenotype, and summarize recent studies and clinical trials about delivery strategies on enhancing the effect of microglial regulation and therapeutic outcome, as well as targeting mechanisms post CNS trauma.
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Affiliation(s)
- Tianchen Huang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jiahe Wu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Department of Clinical Pharmacology, Key Laboratory of Clinical Cancer, Pharmacology and Toxicology Research of Zhejiang Province, Affiliated, Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China
| | - Jiafu Mu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jianqing Gao
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Jinhua Institute of Zhejiang University, Jinhua 321002, China
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Piñero G, Vence M, Aranda ML, Cercato MC, Soto PA, Usach V, Setton-Avruj PC. All the PNS is a Stage: Transplanted Bone Marrow Cells Play an Immunomodulatory Role in Peripheral Nerve Regeneration. ASN Neuro 2023; 15:17590914231167281. [PMID: 37654230 PMCID: PMC10475269 DOI: 10.1177/17590914231167281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 02/28/2023] [Accepted: 03/16/2023] [Indexed: 09/02/2023] Open
Abstract
SUMMARY STATEMENT Bone marrow cell transplant has proven to be an effective therapeutic approach to treat peripheral nervous system injuries as it not only promoted regeneration and remyelination of the injured nerve but also had a potent effect on neuropathic pain.
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Affiliation(s)
- Gonzalo Piñero
- Departamento de Química Biológica, Cátedra de Química Biológica Patalógica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
- Universidad de Buenos Aires-CONICET, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Ciudad Autónoma de Buenos Aires, Argentina
- Department of Pathology, Mount Sinai Hospital, New York, NY, USA
| | - Marianela Vence
- Universidad de Buenos Aires-CONICET, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Ciudad Autónoma de Buenos Aires, Argentina
| | - Marcos L. Aranda
- Universidad de Buenos Aires-CONICET, Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Ciudad Autónoma de Buenos Aires, Argentina
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, USA
| | - Magalí C. Cercato
- Universidad de Buenos Aires-CONICET, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Ciudad Autónoma de Buenos Aires, Argentina
| | - Paula A. Soto
- Departamento de Química Biológica, Cátedra de Química Biológica Patalógica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
- Universidad de Buenos Aires-CONICET, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Ciudad Autónoma de Buenos Aires, Argentina
| | - Vanina Usach
- Departamento de Química Biológica, Cátedra de Química Biológica Patalógica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
- Universidad de Buenos Aires-CONICET, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Ciudad Autónoma de Buenos Aires, Argentina
| | - Patricia C. Setton-Avruj
- Departamento de Química Biológica, Cátedra de Química Biológica Patalógica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
- Universidad de Buenos Aires-CONICET, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Ciudad Autónoma de Buenos Aires, Argentina
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Zhang YD, Jiang T, Wang SY, Fu XX, Duan R, Wei B, Cao HM, Yan E, Chen SY. The Alzheimer’s disease-associated gene TREML2 modulates inflammation by regulating microglia polarization and NLRP3 inflammasome activation. Neural Regen Res 2023; 18:434-438. [PMID: 35900442 PMCID: PMC9396521 DOI: 10.4103/1673-5374.346468] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Triggering receptor expressed on myeloid cells-like 2 (TREML2) is a newly identified susceptibility gene for Alzheimer’s disease (AD). It encodes a microglial inflammation-associated receptor. To date, the potential role of microglial TREML2 in neuroinflammation in the context of AD remains unclear. In this study, APP/PS1 mice were used to investigate the dynamic changes of TREML2 levels in brain during AD progression. In addition, lipopolysaccharide (LPS) stimulation of primary microglia as well as a lentivirus-mediated TREML2 overexpression and knockdown were employed to explore the role of TREML2 in neuroinflammation in the context of AD. Our results show that TREML2 levels gradually increased in the brains of APP/PS1 mice during disease progression. LPS stimulation of primary microglia led to the release of inflammatory cytokines including interleukin-1β, interleukin-6, and tumor necrosis factor-α in the culture medium. The LPS-induced microglial release of inflammatory cytokines was enhanced by TREML2 overexpression and was attenuated by TREML2 knockdown. LPS increased the levels of microglial M1-type polarization marker inducible nitric oxide synthase. This effect was enhanced by TREML2 overexpression and ameliorated by TREML2 knockdown. Furthermore, the levels of microglial M2-type polarization markers CD206 and ARG1 in the primary microglia were reduced by TREML2 overexpression and elevated by TREML2 knockdown. LPS stimulation increased the levels of NLRP3 in primary microglia. The LPS-induced increase in NLRP3 was further elevated by TREML2 overexpression and alleviated by TREML2 knockdown. In summary, this study provides the first evidence that TREML2 modulates inflammation by regulating microglial polarization and NLRP3 inflammasome activation. These findings reveal the mechanisms by which TREML2 regulates microglial inflammation and suggest that TREML2 inhibition may represent a novel therapeutic strategy for AD.
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Var SR, Strell P, Johnson ST, Roman A, Vasilakos Z, Low WC. Transplanting Microglia for Treating CNS Injuries and Neurological Diseases and Disorders, and Prospects for Generating Exogenic Microglia. Cell Transplant 2023; 32:9636897231171001. [PMID: 37254858 PMCID: PMC10236244 DOI: 10.1177/09636897231171001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/18/2023] [Accepted: 04/05/2023] [Indexed: 06/01/2023] Open
Abstract
Microglia are associated with a wide range of both neuroprotective and neuroinflammatory functions in the central nervous system (CNS) during development and throughout lifespan. Chronically activated and dysfunctional microglia are found in many diseases and disorders, such as Alzheimer's disease, Parkinson's disease, and CNS-related injuries, and can accelerate or worsen the condition. Transplantation studies designed to replace and supplement dysfunctional microglia with healthy microglia offer a promising strategy for addressing microglia-mediated neuroinflammation and pathologies. This review will cover microglial involvement in neurological diseases and disorders and CNS-related injuries, current microglial transplantation strategies, and different approaches and considerations for generating exogenic microglia.
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Affiliation(s)
- Susanna R. Var
- Department of Neurosurgery, Medical
School, University of Minnesota, Minneapolis, MN, USA
- Stem Cell Institute, Medical School,
University of Minnesota, Minneapolis, MN, USA
| | - Phoebe Strell
- Stem Cell Institute, Medical School,
University of Minnesota, Minneapolis, MN, USA
- Department of Veterinary and Biomedical
Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Sether T. Johnson
- Department of Neurosurgery, Medical
School, University of Minnesota, Minneapolis, MN, USA
- Stem Cell Institute, Medical School,
University of Minnesota, Minneapolis, MN, USA
| | - Alex Roman
- Department of Neuroscience, University
of Minnesota, Minneapolis, MN, USA
| | - Zoey Vasilakos
- Stem Cell Institute, Medical School,
University of Minnesota, Minneapolis, MN, USA
- Department of Neuroscience, University
of Minnesota, Minneapolis, MN, USA
| | - Walter C. Low
- Department of Neurosurgery, Medical
School, University of Minnesota, Minneapolis, MN, USA
- Stem Cell Institute, Medical School,
University of Minnesota, Minneapolis, MN, USA
- Department of Veterinary and Biomedical
Sciences, University of Minnesota, Minneapolis, MN, USA
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43
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Implications of microglial heterogeneity in spinal cord injury progression and therapy. Exp Neurol 2023; 359:114239. [PMID: 36216123 DOI: 10.1016/j.expneurol.2022.114239] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/21/2022] [Accepted: 10/03/2022] [Indexed: 11/07/2022]
Abstract
Microglia are widely distributed in the central nervous system (CNS), where they aid in the maintenance of neuronal function and perform key auxiliary roles in phagocytosis, neural repair, immunological control, and nutrition delivery. Microglia in the undamaged spinal cord is in a stable state and serve as immune monitors. In the event of spinal cord injury (SCI), severe changes in the microenvironment and glial scar formation lead to axonal regeneration failure. Microglia participates in a series of pathophysiological processes and behave both positive and negative consequences during this period. A deep understanding of the characteristics and functions of microglia can better identify therapeutic targets for SCI. Technological innovations such as single-cell RNA sequencing (Sc-RNAseq) have led to new advances in the study of microglia heterogeneity throughout the lifespan. Here,We review the updated studies searching for heterogeneity of microglia from the developmental and pathological state, survey the activity and function of microglia in SCI and explore the recent therapeutic strategies targeting microglia in the CNS injury.
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44
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Chen X, Yin XY, Wang CC, Du P, Wang XS, Lu YC, Sun YW, Sun YH, Hu YM. Muse cells decrease the neuroinflammatory response by modulating the proportion of M1 and M2 microglia in vitro. Neural Regen Res 2023. [PMID: 35799545 PMCID: PMC9241390 DOI: 10.4103/1673-5374.343885] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Neuroinflammation hinders repair of the central nervous system (CNS). Stem cell transplantation is a very promising approach for treatment of CNS injuries. However, it is difficult to select seed cells that can both facilitate nerve regeneration and improve the microenvironment in the CNS. In this study, we isolated multilineage-differentiating stress-enduring (Muse) cells from bone marrow mesenchymal stem cells. We explored the anti-inflammatory effect and mechanism of Muse cells in vitro by coculture of Muse cells with lipopolysaccharide-stimulated microglia. Our results showed that Muse cells effectively reduced the transcription and secretion of tumor necrosis factor α and interleukin-1β and increased the expression of transforming growth factor-β and interleukin-10 in microglia. In addition, Muse cells decreased the number of M1 microglia and increased the proportion of M2 microglia in an inflammatory environment more effectively than bone marrow mesenchymal stem cells. We also show that Muse cells inhibited the protein expression of toll-like receptor 4 (TLR4) and myeloid differentiation primary response protein (MyD88) and inhibited the expression of the phosphorylated forms of transcription factor p65, nuclear factor (NF)-κB inhibitor alpha, and p38 mitogen-activated protein kinase (MAPK) in microglia. Therefore, we suggest Muse cells cause antineuroinflammatory effects by inhibition of the TLR4/MyD88/NF-κB and p38 MAPK signaling pathways in microglia. Our results shed light on the function of Muse cells in relation to CNS diseases and provide insight into the selection of seed cells.
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45
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Implications of fractalkine on glial function, ablation and glial proteins/receptors/markers—understanding its therapeutic usefulness in neurological settings: a narrative review. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2022. [DOI: 10.1186/s43094-022-00446-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Abstract
Background
Fractalkine (CX3CL1) is a chemokine predominantly released by neurons. As a signaling molecule, CX3CL1 facilitates talk between neurons and glia. CX3CL1 is considered as a potential target which could alleviate neuroinflammation. However, certain controversial results and ambiguous role of CX3CL1 make it inexorable to decipher the overall effects of CX3CL1 on the physiopathology of glial cells.
Main body of the abstract
Implications of cross-talk between CX3CL1 and different glial proteins/receptors/markers will give a bird eye view of the therapeutic significance of CX3CL1. Keeping with the need, this review identifies the effects of CX3CL1 on glial physiopathology, glial ablation, and gives a wide coverage on the effects of CX3CL1 on certain glial proteins/receptors/markers.
Short conclusion
Pinpoint prediction of the therapeutic effect of CX3CL1 on neuroinflammation needs further research. This is owing to certain obscure roles and implications of CX3CL1 on different glial proteins/receptors/markers, which are crucial under neurological settings. Further challenges are imposed due to the dichotomous roles played by CX3CL1. The age-old chemokine shows many newer scopes of research in near future. Thus, overall assessment of the effect of CX3CL1 becomes crucial prior to its administration in neuroinflammation.
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46
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Tang YM, Pulimood NS, Stifani S. Comparing the Characteristics of Microglia Preparations Generated Using Different Human iPSC-Based Differentiation Methods to Model Neurodegenerative Diseases. ASN Neuro 2022; 14:17590914221145105. [PMID: 36524236 PMCID: PMC9761225 DOI: 10.1177/17590914221145105] [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] [Indexed: 12/23/2022] Open
Abstract
As the resident immune cells of the healthy nervous system, homeostatic microglia can rapidly become activated in response to injury/disease. Dysregulated microglia activation is a hallmark of nervous system disorders including neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS) and Alzheimer's disease. The elucidation of the biological and pathological roles of microglia has recently benefitted from the development of microglia-like cells using human induced pluripotent stem cell (iPSC)-based approaches. The success of iPSC-derived microglia preparations as a disease-relevant model system depends on their representation of the in vivo spatial and temporal heterogeneity of microglia under pathological conditions. Little is currently known about the potential of human iPSC-derived microglia generated using different methods for the study of neurodegenerative diseases. We compared the transcriptomes of human iPSC-derived microglia generated using two frequently used in vitro differentiation methods to determine whether separate strategies can generate microglia with distinct transcriptional signatures in vitro. We show that microglia derived using different differentiation methods display distinct maturation characteristics after equivalent times in culture. We also reveal that iPSC-derived microglia preparations generated using these two methods are composed of different subpopulations with transcriptomic signatures resembling those of in vivo regionally distinct microglia subtypes, specifically white-matter and gray-matter microglia. These findings highlight the need to better characterize the subtype composition of each microglia preparation prior to its use to model neurodegenerative diseases.
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Affiliation(s)
- Ye Man Tang
- Department of Neurology and Neurosurgery, Montreal Neurological
Institute-Hospital, McGill
University, Montreal, Quebec, Canada
| | - Nisha S. Pulimood
- Department of Neurology and Neurosurgery, Montreal Neurological
Institute-Hospital, McGill
University, Montreal, Quebec, Canada
| | - Stefano Stifani
- Department of Neurology and Neurosurgery, Montreal Neurological
Institute-Hospital, McGill
University, Montreal, Quebec, Canada,Stefano Stifani, Department of Neurology
and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University,
Montreal, Quebec, Canada H3A 2B4.
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47
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Osonoi S, Mizukami H, Takeuchi Y, Sugawa H, Ogasawara S, Takaku S, Sasaki T, Kudoh K, Ito K, Sango K, Nagai R, Yamamoto Y, Daimon M, Yamamoto H, Yagihashi S. RAGE activation in macrophages and development of experimental diabetic polyneuropathy. JCI Insight 2022; 7:160555. [PMID: 36477360 PMCID: PMC9746912 DOI: 10.1172/jci.insight.160555] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 10/19/2022] [Indexed: 12/12/2022] Open
Abstract
It is suggested that activation of receptor for advanced glycation end products (RAGE) induces proinflammatory response in diabetic nerve tissues. Macrophage infiltration is invoked in the pathogenesis of diabetic polyneuropathy (DPN), while the association between macrophage and RAGE activation and the downstream effects of macrophages remain to be fully clarified in DPN. This study explored the role of RAGE in the pathogenesis of DPN through the modified macrophages. Infiltrating proinflammatory macrophages impaired insulin sensitivity, atrophied the neurons in dorsal root ganglion, and slowed retrograde axonal transport (RAT) in the sciatic nerve of type 1 diabetic mice. RAGE-null mice showed an increase in the population of antiinflammatory macrophages, accompanied by intact insulin sensitivity, normalized ganglion cells, and RAT. BM transplantation from RAGE-null mice to diabetic mice protected the peripheral nerve deficits, suggesting that RAGE is a major determinant for the polarity of macrophages in DPN. In vitro coculture analyses revealed proinflammatory macrophage-elicited insulin resistance in the primary neuronal cells isolated from dorsal root ganglia. Applying time-lapse recording disclosed a direct impact of proinflammatory macrophage and insulin resistance on the RAT deficits in primary neuronal cultures. These results provide a potentially novel insight into the development of RAGE-related DPN.
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Affiliation(s)
- Sho Osonoi
- Department of Pathology and Molecular Medicine and,Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | | | - Yuki Takeuchi
- Department of Pathology and Molecular Medicine and,Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Hikari Sugawa
- Laboratory of Food and Regulation Biology, Department of Bioscience, School of Agriculture, Tokai University, Higashi-ku, Kumamoto, Japan
| | | | - Shizuka Takaku
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| | | | | | - Koichi Ito
- Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Kazunori Sango
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| | - Ryoji Nagai
- Laboratory of Food and Regulation Biology, Department of Bioscience, School of Agriculture, Tokai University, Higashi-ku, Kumamoto, Japan
| | - Yasuhiko Yamamoto
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Makoto Daimon
- Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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48
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Ma D, Shen H, Chen F, Liu W, Zhao Y, Xiao Z, Wu X, Chen B, Lu J, Shao D, Dai J. Inflammatory Microenvironment-Responsive Nanomaterials Promote Spinal Cord Injury Repair by Targeting IRF5. Adv Healthc Mater 2022; 11:e2201319. [PMID: 36165212 DOI: 10.1002/adhm.202201319] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 09/21/2022] [Indexed: 01/28/2023]
Abstract
Spinal cord injury (SCI) involves excessive inflammatory responses, which are characterized by the existence of high levels of proinflammatory M1 macrophages rather than prohealing M2 macrophages, and oxidative stress. Interferon regulatory factor 5 (IRF5) is a promising therapeutic target in regulation of macrophage reprogramming from the M1 to M2 phenotype. However, knockdown of IRF5 expression mediated by small interfering RNA (siRNA) is limited by instability and poor cellular uptake. In the present study, polyethylenimine-conjugated, diselenide-bridged mesoporous silica nanoparticles are tailored to regulate macrophage polarization by controllably delivering siRNA to silence IRF5. The MSN provides reactive oxygen species (ROS)-responsive degradation and release, while polyethylenimine-function offers efficient loading of siRNA-IRF5 and enhanced endosome escape. As a consequence, the intelligent nanomaterial effectively transfects the siRNA-IRF5 with its remaining high stability and bioactivity, thereby effectively regulating the M1-to-M2 macrophage conversion in vitro and in vivo. Importantly, administration of the functional nanomaterial in crush SCI mice suppresses excessive inflammation, enhances neuroprotection, and promotes locomotor restoration. Collectively, the ROS-responsive nanomedicine provides a gene silencing strategy for regulating macrophage polarization and oxidative balance in SCI repair.
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Affiliation(s)
- Dezun Ma
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122, China.,State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - He Shen
- Key Laboratory for Nano-Bio Interface Research, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China.,School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China
| | - Fangman Chen
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong, 510006, China
| | - Weiyuan Liu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Yannan Zhao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Zhifeng Xiao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Xianming Wu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Bing Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Junna Lu
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong, 510006, China
| | - Dan Shao
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong, 510006, China
| | - Jianwu Dai
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P. R. China.,Key Laboratory for Nano-Bio Interface Research, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China.,School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China
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49
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Li Y, Zou Z, An J, Wu Q, Tong L, Mei X, Tian H, Wu C. Chitosan-modified hollow manganese dioxide nanoparticles loaded with resveratrol for the treatment of spinal cord injury. Drug Deliv 2022; 29:2498-2512. [PMID: 35903814 PMCID: PMC9477490 DOI: 10.1080/10717544.2022.2104957] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Spinal cord injury (SCI) is a serious central nervous system disease, and secondary injury, including oxidative stress, the inflammatory response and accompanying neuronal apoptosis, will aggravate the condition. Due to the existence of the blood–spinal cord barrier (BSCB), the existing drugs for SCI treatment are difficulty to reach the injury site and thus their efficacy is limited. In this study, we designed chitosan-modified hollow manganese dioxide nanoparticles (CM) for the delivery of resveratrol to help it pass through the BSCB. Resveratrol (Res), a poorly soluble drug, was adsorbed into CM with a particle size of approximately 130 nm via the adsorption method, and the drug loading reached 21.39 ± 2.53%. In vitro dissolution experiment, the Res release of the loaded sample (CMR) showed slowly release behavior and reached about 87% at 36 h. In vitro at the cellular level and in vivo at the animal level experiments demonstrated that CMR could alleviate significantly oxidative stress by reducing level of reactive oxygen species (ROS), malondialdehyde (MDA), superoxide dismutase (SOD), and increasing glutathione peroxidase (GSH) level. Additionally, immunofluorescence (iNOS, IL-1β, and Cl caspase-3) and western blot (iNOS, cox-2, IL-1β, IL-10, Cl caspase-3, bax, and bcl-2) were used to detect the expression of related factors, which verified that CMR could also reduce inflammation and neuronal apoptosis. These results indicated that CM, as a potential central nervous system drug delivery material, was suitable for SCI treatment.
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Affiliation(s)
- Yingqiao Li
- Pharmacy School, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Zhiru Zou
- Pharmacy School, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Jinyu An
- Pharmacy School, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Qian Wu
- Pharmacy School, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Le Tong
- Pharmacy School, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Xifan Mei
- Department of Orthopedics, Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China.,Key Laboratory of Medical Tissue Engineering of Liaoning Province, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - He Tian
- Department of Histology and Embryology, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Chao Wu
- Pharmacy School, Jinzhou Medical University, Jinzhou, Liaoning, China
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50
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Peng L, Hu G, Yao Q, Wu J, He Z, Law BYK, Hu G, Zhou X, Du J, Wu A, Yu L. Microglia autophagy in ischemic stroke: A double-edged sword. Front Immunol 2022; 13:1013311. [PMID: 36466850 PMCID: PMC9708732 DOI: 10.3389/fimmu.2022.1013311] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 10/25/2022] [Indexed: 08/14/2023] Open
Abstract
Ischemic stroke (IS) is one of the major types of cerebrovascular diseases causing neurological morbidity and mortality worldwide. In the pathophysiological process of IS, microglia play a beneficial role in tissue repair. However, it could also cause cellular damage, consequently leading to cell death. Inflammation is characterized by the activation of microglia, and increasing evidence showed that autophagy interacts with inflammation through regulating correlative mediators and signaling pathways. In this paper, we summarized the beneficial and harmful effects of microglia in IS. In addition, we discussed the interplay between microglia autophagy and ischemic inflammation, as along with its application in the treatment of IS. We believe this could help to provide the theoretical references for further study into IS and treatments in the future.
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Affiliation(s)
- Li Peng
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
- Department of Medicine Imaging, School of Clinical Medicine, Southwest Medical University, Luzhou, China
| | - Guangqiang Hu
- Department of Anatomy, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
| | - Qianfang Yao
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Jianming Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Ziyang He
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Betty Yuen-Kwan Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macao, Macao SAR, China
| | - Guishan Hu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Xiaogang Zhou
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Junrong Du
- Key Laboratory of Drug Targeting and Drug Delivery Systems of Ministry of Education, Department of Pharmacology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Anguo Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Lu Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
- Department of Medicine Imaging, School of Clinical Medicine, Southwest Medical University, Luzhou, China
- Department of Chemistry, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
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