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Wu C, Chen Y, Chen X, Zhang Y, Zhao X, Deng Y, Li C, Zhang D, Zhang X, Wang S. 20-Deoxyingenol Activates Mitophagy Through TFEB and Promotes Functional Recovery After Spinal Cord Injury. Mol Neurobiol 2024:10.1007/s12035-024-04283-5. [PMID: 38865079 DOI: 10.1007/s12035-024-04283-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 06/04/2024] [Indexed: 06/13/2024]
Abstract
Spinal cord injury (SCI) can lead to permanent paralysis and various motor, sensory and autonomic nervous system dysfunction. The complex pathophysiological processes limit the effectiveness of many clinical treatments. Mitochondria has been reported to play a key role in the pathogenesis of SCI; while mitophagy is a protective mechanism against mitochondrial dysfunction. However, there is recently little drugs that may targeted activate mitophagy to treat SCI. In this study, we evaluated the role of 20-Deoxyingenol (20-DOI) in SCI and explored its potential mechanisms. We used a SCI rat model and evaluated the functional outcomes after the injury. Western blotting and immunofluorescence techniques were used to analyze the levels of mitophagy, apoptosis, and TFEB-related signaling pathways. Our research results show that 20-DOI significantly improves the apoptosis of neural cells after TBHP stimulation and functional recovery after spinal cord injury. In addition, mitophagy, TFEB levels, and apoptosis are related to the mechanism of 20-DOI treatment for spinal cord injury. Specifically, our research results indicate that 20-DOI restored the autophagic flux after injury, thereby inducing mitophagy, eliminating the accumulation of Cyto C, and inhibiting apoptosis. Further mechanism research suggests that 20-DOI may regulate mitophagy by promoting TFEB nuclear translocation. These results indicate that 20-DOI can significantly promote recovery after spinal cord injury, which may be a promising treatment method for spinal cord injury.
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Affiliation(s)
- Chenyu Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China
| | - Yu Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China
| | - Ximiao Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China
| | - Yekai Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China
| | - Xiaoying Zhao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China
| | - Yuxin Deng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China
| | - Chenchao Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China
| | - Di Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China.
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China.
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China.
| | - Xiaolei Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China.
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China.
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China.
| | - Sheng Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou, China.
- Zhejiang Provincial Key Laboratory of Orthopedics, Zhejiang Province, Wenzhou, China.
- The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou, China.
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Han B, Liang W, Hai Y, Sun D, Ding H, Yang Y, Yin P. Neurophysiological, histological, and behavioral characterization of animal models of distraction spinal cord injury: a systematic review. Neural Regen Res 2024; 19:563-570. [PMID: 37721285 PMCID: PMC10581570 DOI: 10.4103/1673-5374.380871] [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: 11/22/2022] [Revised: 03/22/2023] [Accepted: 06/06/2023] [Indexed: 09/19/2023] Open
Abstract
Distraction spinal cord injury is caused by some degree of distraction or longitudinal tension on the spinal cord and commonly occurs in patients who undergo corrective operation for severe spinal deformity. With the increased degree and duration of distraction, spinal cord injuries become more serious in terms of their neurophysiology, histology, and behavior. Very few studies have been published on the specific characteristics of distraction spinal cord injury. In this study, we systematically review 22 related studies involving animal models of distraction spinal cord injury, focusing particularly on the neurophysiological, histological, and behavioral characteristics of this disease. In addition, we summarize the mechanisms underlying primary and secondary injuries caused by distraction spinal cord injury and clarify the effects of different degrees and durations of distraction on the primary injuries associated with spinal cord injury. We provide new concepts for the establishment of a model of distraction spinal cord injury and related basic research, and provide reference guidelines for the clinical diagnosis and treatment of this disease.
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Affiliation(s)
- Bo Han
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Weishi Liang
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yong Hai
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Duan Sun
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Hongtao Ding
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yihan Yang
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Peng Yin
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
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Wang S, Cheng L. The role of apoptosis in spinal cord injury: a bibliometric analysis from 1994 to 2023. Front Cell Neurosci 2024; 17:1334092. [PMID: 38293650 PMCID: PMC10825042 DOI: 10.3389/fncel.2023.1334092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 12/29/2023] [Indexed: 02/01/2024] Open
Abstract
Background Apoptosis after spinal cord injury (SCI) plays a pivotal role in the secondary injury mechanisms, which cause the ultimate neurologic insults. A better understanding of the molecular and cellular basis of apoptosis in SCI allows for improved glial and neuronal survival via the administrations of anti-apoptotic biomarkers. The knowledge structure, development trends, and research hotspots of apoptosis and SCI have not yet been systematically investigated. Methods Articles and reviews on apoptosis and SCI, published from 1st January 1994 to 1st Oct 2023, were retrieved from the Web of Science™. Bibliometrix in R was used to evaluate annual publications, countries, affiliations, authors, sources, documents, key words, and hot topics. Results A total of 3,359 publications in accordance with the criterions were obtained, which exhibited an ascending trend in annual publications. The most productive countries were the USA and China. Journal of Neurotrauma was the most impactive journal; Wenzhou Medical University was the most prolific affiliation; Cuzzocrea S was the most productive and influential author. "Apoptosis," "spinal-cord-injury," "expression," "activation," and "functional recovery" were the most frequent key words. Additionally, "transplantation," "mesenchymal stemness-cells," "therapies," "activation," "regeneration," "repair," "autophagy," "exosomes," "nlrp3 inflammasome," "neuroinflammation," and "knockdown" were the latest emerging key words, which may inform the hottest themes. Conclusions Apoptosis after SCI may cause the ultimate neurological damages. Development of novel treatments for secondary SCI mainly depends on a better understanding of apoptosis-related mechanisms in molecular and cellular levels. Such therapeutic interventions involve the application of anti-apoptotic agents, free radical scavengers, as well as anti-inflammatory drugs, which can be targeted to inhibit core events in cellular and molecular injury cascades pathway.
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Affiliation(s)
- Siqiao Wang
- Division of Spine, Department of Orthopedics, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration (Tongji University), Ministry of Education, Shanghai, China
| | - Liming Cheng
- Division of Spine, Department of Orthopedics, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration (Tongji University), Ministry of Education, Shanghai, China
- Institute of Spinal and Spinal Cord Injury, Tongji University School of Medicine, Shanghai, China
- Stem Cell Translational Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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Su W, Xu J, Pei D, Li X, Yang J, Geng Z, Liu Q, Yang L, Yu S. Hybrid Electrically Conductive Hydrogels with Local Nerve Growth Factor Release Facilitate Peripheral Nerve Regeneration. ACS APPLIED BIO MATERIALS 2023; 6:5854-5863. [PMID: 37948755 DOI: 10.1021/acsabm.3c00977] [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: 11/12/2023]
Abstract
It is challenging to treat peripheral nerve injury (PNI) clinically. As the gold standard for peripheral nerve repair, autologous nerve grafting remains a critical limitation, including tissue availability, donor-site morbidity, immune rejection, etc. Recently, conductive hydrogels (CHs) have shown potential applications in neural bioengineering due to their good conductivity, biocompatibility, and low immunogenicity. Herein, a hybrid electrically conductive hydrogel composed of acrylic acid derivatives, gelatin, and heparin with sustained nerve growth factor (NGF) release property was developed. The rat sciatic nerve injury (SNI) model (10 mm long segment defect) was used to investigate the efficacy of these hydrogel conduits in facilitating peripheral nerve repair. The results showed that the hydrogel conduits had excellent conductivity, mechanical properties, and biocompatibility. In addition, NGF immobilized in the hydrogel conduits had good sustained release characteristics. Finally, functional recovery and electrophysiological evaluations, together with histological analysis, indicated that the hydrogel conduits immobilizing NGF had superior effects on motor recovery, axon growth, and remyelination, thereby significantly accelerating the repairing of the sciatic nerve. This study demonstrated that hybrid electrically conductive hydrogels with local NGF release could be effectively used for PNI repair.
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Affiliation(s)
- Weijie Su
- Neurosurgery Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Jiakun Xu
- Neurosurgery Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Dating Pei
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou 510500, China
- Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, Guangzhou 510500, China
- National Engineering Research Center for Healthcare Devices, Guangzhou 510500, China
| | - Xixi Li
- Neurosurgery Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Jia Yang
- Neurosurgery Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Zhijie Geng
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou 510500, China
- Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, Guangzhou 510500, China
- National Engineering Research Center for Healthcare Devices, Guangzhou 510500, China
| | - Qunfeng Liu
- Foshan Polytechnic, Foshan City, Guangdong Province 528000, China
| | - Lixuan Yang
- Neurosurgery Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Shan Yu
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou 510500, China
- Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, Guangzhou 510500, China
- National Engineering Research Center for Healthcare Devices, Guangzhou 510500, China
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Mi X, Ni C, Zhao J, Amin N, Jiao D, Fang M, Ye X. P2Y12 receptor mediates apoptosis and demyelination to affect functional recovery in mice with spinal cord injury. Neurochem Int 2023; 171:105641. [PMID: 37952830 DOI: 10.1016/j.neuint.2023.105641] [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: 03/10/2023] [Revised: 09/28/2023] [Accepted: 11/06/2023] [Indexed: 11/14/2023]
Abstract
Among diseases of the central nervous system (CNS), spinal cord injury (SCI) has a high fatality rate. It has been proven that P2Y G protein-coupled purinergic receptors have a neuroprotective role in apoptosis and regeneration inside the damaged spinal cord. The P2Y12 receptor (P2Y12R) has recently been linked to peripheral neuropathy and stroke. However, the role of P2Y12R after SCI remains unclear. Our study randomly divided C57BL/6J female mice into 3 groups: Sham+DMSO, SCI+DMSO, and SCI+MRS2395. MRS2395 as a P2Y12R inhibitor was intraperitoneally injected at a dose of 1.5 mg/kg once daily for 7 days. We showed that the P2Y12R was markedly activated after injury, and it was double labeled with the microglial and neuron. Behavioral tests were employed to assess motor function recovery. By using immunofluorescence staining, the NeuN expression level was detected. The morphology of neurons was observed by hematoxylin-eosin and Nissl staining. P2Y12R, Bax, GFAP, PCNA and calbindin expression levels were detected using Western blot. Meanwhile, mitochondria and myelin sheath were observed by transmission electron microscopy (TEM). Our findings demonstrated that MRS2395 significantly enhanced motor function induced by SCI and that was used to alleviate apoptosis and astrocyte scarring. NeuN positive cells in the SCI group were lower than in the therapy group, although Bax, GFAP, PCNA and calbindin expression levels were considerably higher. Moreover, following MRS2395 therapy, the histological damage was reversed. A notable improvement in myelin sheath and mitochondrial morphology was seen in the therapy group. Together, our findings indicate that activation of P2Y12R in damaged spinal cord may be a critical event and suggest that inhibition of P2Y12R might be a feasible therapeutic strategy for treating SCI.
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Affiliation(s)
- Xiaodan Mi
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Chengtao Ni
- Graduate School, Bengbu Medical College, Bengbu, Anhui, China
| | - Jingting Zhao
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Nashwa Amin
- Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China; Institute of System Medicine, Zhejiang University School of Medicine, Hangzhou, China; Department of Zoology, Faculty of Science, Aswan University, Egypt
| | - Dian Jiao
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Marong Fang
- Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.
| | - Xiangming Ye
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China.
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Alhajlah S. Suppression of Fibroblast Growth Factor Receptor-5 (FGFR5) has no Impact on Axon Regeneration after SCI. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2023; 15:S1111-S1115. [PMID: 37693980 PMCID: PMC10485452 DOI: 10.4103/jpbs.jpbs_199_23] [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: 02/28/2023] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 09/12/2023] Open
Abstract
One of the most common forms of the mammalian central nervous system (CNS) injuries is spinal cord injury (SCI), and any lesion to the CNS can result in a lifelong functional impairment since CNS axons cannot regenerate. The relative axon regenerating genes following spinal SCI were examined using the regenerative SN, pSN + DC, and non-regenerating DC lesion models. By using qRT-PCR, we discovered that fibroblast growth factor receptor-5 (FGFR5) was 4.2-fold more highly expressed in non-regeneration lesions compared to intact control and regenerating animals. Furthermore, in cultured dorsal root ganglion neurons (DRGN), short interfering RNA (siRNA)-mediated knockdown of FGFR5 had no effect on DRGN neurite outgrowth, indicating that the gene's suppression has no effect on axon regeneration and may play other roles in the CNS besides axon regeneration.
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Affiliation(s)
- Sharif Alhajlah
- Department of Medical Laboratories, College of Applied Medical Sciences, Shaqra University, Shaqra, Saudi Arabia
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, College of Medical and Dental Science, University of Birmingham, Edgbaston, Birmingham, B15 2TT , United Kingdom
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Hosseini SP, Farivar S, Rezaei R, Tokhanbigli S, Hatami B, Zali MR, Baghaei K. Fibroblast growth factor 2 reduces endoplasmic reticulum stress and apoptosis in in-vitro Non-Alcoholic Fatty Liver Disease model. Daru 2023; 31:29-37. [PMID: 37156902 PMCID: PMC10238349 DOI: 10.1007/s40199-023-00459-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 04/08/2023] [Indexed: 05/10/2023] Open
Abstract
PURPOSE Non-Alcoholic fatty liver disease is characterized by the accumulation of excess fat in the liver, chronic inflammation, and cell death, ranging from simple steatosis to fibrosis, and finally leads to cirrhosis and hepatocellular carcinoma. The effect of Fibroblast growth factor 2 on apoptosis and ER stress inhibition has been investigated in many studies. In this study, we aimed to investigate the effect of FGF2 on the NAFLD in-vitro model in the HepG2 cell line. METHODS The in-vitro NAFLD model was first induced on the HepG2 cell line using oleic acid and palmitic acid for 24 h and evaluated by ORO staining and Real-time PCR. The cell line was then treated with various concentrations of fibroblast growth factor 2 for 24 h, total RNA was extracted and cDNA was consequently synthesized. Real-time PCR and flow cytometry was applied to evaluate gene expression and apoptosis rate, respectively. RESULTS It was shown that fibroblast growth factor 2 ameliorated apoptosis in the NAFLD in-vitro model by reducing the expression of genes involved in the intrinsic apoptosis pathway, including caspase 3 and 9. Moreover, endoplasmic reticulum stress was decreased following upregulating the protective ER-stress genes, including SOD1 and PPARα. CONCLUSIONS FGF2 significantly reduced ER stress and intrinsic apoptosis pathway. Our data suggest that FGF2 treatment could be a potential therapeutic strategy for NAFLD.
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Affiliation(s)
- Seyedeh Parisa Hosseini
- Department of Molecular and Cell Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Shirin Farivar
- Department of Molecular and Cell Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Ramazan Rezaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Samaneh Tokhanbigli
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Hatami
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kaveh Baghaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Xin W, Baokun Z, Zhiheng C, Qiang S, Erzhu Y, Jianguang X, Xiaofeng L. Biodegradable bilayer hydrogel membranes loaded with bazedoxifene attenuate blood-spinal cord barrier disruption via the NF-κB pathway after acute spinal cord injury. Acta Biomater 2023; 159:140-155. [PMID: 36736849 DOI: 10.1016/j.actbio.2023.01.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023]
Abstract
After spinal cord injury (SCI), blood-spinal cord barrier (BSCB) disruption and hemorrhage lead to blood cell infiltration and progressive secondary injuries. Therefore, early restoration of the BSCB represents a key step in the treatment of SCI. Bazedoxifene (BZA), a third-generation estrogen receptor modulator, has recently been reported to inhibit inflammation and alleviate blood-brain barrier disruption caused by traumatic brain injury, attracting great interest in the field of central nervous system injury and repair. However, whether BZA can attenuate BSCB disruption and contribute to SCI repair remains unknown. Here, we developed a new type of biomaterial carrier and constructed a BZA-loaded HSPT (hyaluronic acid (HA), sodium alginate (SA), polyvinyl alcohol (PVA), tetramethylpropane (TPA) material construction) (HSPT@Be) system to effectively deliver BZA to the site of SCI. We found that HSPT@Be could significantly reduce inflammation in the spinal cord in SCI rats and attenuate BSCB disruption by providing covering scaffold, inhibiting oxidative stress, and upregulating tight junction proteins, which was mediated by regulation of the NF-κB/MMP signaling pathway. Importantly, functional assessment showed the evident improvement of behavioral functions in the HSPT@Be-treated SCI rats. These results indicated that HSPT@Be can attenuate BSCB disruption via the NF-κB pathway after SCI, shedding light on its potential therapeutic benefit for SCI. STATEMENT OF SIGNIFICANCE: After spinal cord injury, blood-spinal cord barrier disruption and hemorrhage lead to blood cell infiltration and progressive secondary injuries. Bazedoxifene has recently been reported to inhibit inflammation and alleviate blood-brain barrier disruption caused by traumatic brain injury. However, whether BZA can attenuate BSCB disruption and contribute to SCI repair remains unknown. In this study, we developed a new type of biomaterial carrier and constructed a bazedoxifene-loaded HSPT (HSPT@Be) system to efficiently treat SCI. HSPT@Be could provide protective coverage, inhibit oxidative stress, and upregulate tight junction proteins through NF-κB/MMP pathway both in vivo and in vitro, therefore attenuating BSCB disruption. Our study fills the application gap of biomaterials in BSCB restoration.
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Affiliation(s)
- Wang Xin
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Zhang Baokun
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Chen Zhiheng
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Shi Qiang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Yang Erzhu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Xu Jianguang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Lian Xiaofeng
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
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Rahimi S, Angaji SA, Majd A, Hatami B, Baghaei K. Evaluating the effect of basic fibroblast growth factor on the progression of NASH disease by inhibiting ceramide synthesis and ER stress-related pathways. Eur J Pharmacol 2023; 942:175536. [PMID: 36693552 DOI: 10.1016/j.ejphar.2023.175536] [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: 11/22/2022] [Revised: 01/05/2023] [Accepted: 01/20/2023] [Indexed: 01/22/2023]
Abstract
Non-alcoholic steatohepatitis (NASH) is associated with intrahepatic lipid accumulation, inflammation, and hepatocyte death. Several studies have indicated that high-fat diets increase ceramide synthases-6 (CerS-6) expression and a concomitant elevation of C16-ceramides, which can modulate endoplasmic reticulum (ER) stress and further contribute to the progression of NASH. Ceramide levels have reportedly been impacted by basic fibroblast growth factor (bFGF) in various diseases. This study looked into the role of bFGF on CerS6/C16-ceramide and ER stress-related pathways in a mouse model of NASH. Male C57BL/6J mice were fed a western diet (WD) combined with carbon tetrachloride (CCl4) for eight weeks. Next, bFGF was injected into the NASH mice for seven days of continuous treatment. The effects of bFGF on NASH endpoints (including steatosis, inflammation, ballooning, and fibrosis), ceramide levels and ER-stress-induced inflammation, reactive oxygen species (ROS) production, and apoptosis were evaluated. Treatment with bFGF significantly reduced CerS-6/C16-ceramide. Further, the inflammatory condition was alleviated with reduction of nuclear factor-kappa B (NF-κB), tumor necrosis factor-alpha (TNF-α), and interleukin 6 (IL-6) gene expression. ROS level was also reduced. ER stress-related cell death diminished by reducing C/EBP homologous protein (CHOP) mRNA expression and caspase 3 activity. Furthermore, activation of the hepatic stellate cells was inhibited in the bFGF-treated mice by lowering the amount of alpha-smooth muscle actin (α-SMA) at the mRNA and protein level. According to our findings, CerS-6/C16-ceramide alteration impacts ER stress-mediated inflammation, oxidative stress, and apoptosis. The bFGF treatment effectively attenuated the development of NASH by downregulating CerS-6/C16-ceramide and subsequent ER stress-related pathways.
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Affiliation(s)
- Shahrzad Rahimi
- Department of Genetic, North Tehran Branch, Islamic Azad University, Tehran, 1651153311, Iran
| | - Seyyed Abdolhamid Angaji
- Department of Genetic, North Tehran Branch, Islamic Azad University, Tehran, 1651153311, Iran; Department of Cell and Molecular Biology, Faculty of Biological Science, Kharazmi University, Tehran, 1571914911, Iran
| | - Ahmad Majd
- Department of Biology, North Tehran Branch, Islamic Azad University, Tehran, 1651153311, Iran
| | - Behzad Hatami
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, 1985717413, Iran
| | - Kaveh Baghaei
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, 1985717413, Iran; Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, 1985717413, Iran.
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10
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The role of PI3K/Akt signalling pathway in spinal cord injury. Biomed Pharmacother 2022; 156:113881. [DOI: 10.1016/j.biopha.2022.113881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 10/13/2022] [Accepted: 10/13/2022] [Indexed: 11/18/2022] Open
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The Proteostasis Network: A Global Therapeutic Target for Neuroprotection after Spinal Cord Injury. Cells 2022; 11:cells11213339. [PMID: 36359735 PMCID: PMC9658791 DOI: 10.3390/cells11213339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/14/2022] [Accepted: 10/20/2022] [Indexed: 01/18/2023] Open
Abstract
Proteostasis (protein homeostasis) is critical for cellular as well as organismal survival. It is strictly regulated by multiple conserved pathways including the ubiquitin-proteasome system, autophagy, the heat shock response, the integrated stress response, and the unfolded protein response. These overlapping proteostasis maintenance modules respond to various forms of cellular stress as well as organismal injury. While proteostasis restoration and ultimately organism survival is the main evolutionary driver of such a regulation, unresolved disruption of proteostasis may engage pro-apoptotic mediators of those pathways to eliminate defective cells. In this review, we discuss proteostasis contributions to the pathogenesis of traumatic spinal cord injury (SCI). Most published reports focused on the role of proteostasis networks in acute/sub-acute tissue damage post-SCI. Those reports reveal a complex picture with cell type- and/or proteostasis mediator-specific effects on loss of neurons and/or glia that often translate into the corresponding modulation of functional recovery. Effects of proteostasis networks on such phenomena as neuro-repair, post-injury plasticity, as well as systemic manifestations of SCI including dysregulation of the immune system, metabolism or cardiovascular function are currently understudied. However, as potential interventions that target the proteostasis networks are expected to impact many cell types across multiple organ systems that are compromised after SCI, such therapies could produce beneficial effects across the wide spectrum of highly variable human SCI.
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Wu F, Zhang R, Meng W, Liu L, Tang Y, Lu L, Xia L, Zhang H, Feng Z, Chen D. Platelet derived growth factor promotes the recovery of traumatic brain injury by inhibiting endoplasmic reticulum stress and autophagy-mediated pyroptosis. Front Pharmacol 2022; 13:862324. [PMID: 36339541 PMCID: PMC9629145 DOI: 10.3389/fphar.2022.862324] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 09/26/2022] [Indexed: 04/13/2024] Open
Abstract
Autophagy and endoplasmic reticulum stress (ER stress) are important in numerous pathological processes in traumatic brain injury (TBI). Growing evidence has indicated that pyroptosis-associated inflammasome is involved in the pathogenesis of TBI. Platelet derived growth factor (PDGF) has been reported to be as a potential therapeutic drug for neurological diseases. However, the roles of PDGF, autophagy and ER stress in pyroptosis have not been elucidated in the TBI. This study investigated the roles of ER stress and autophagy after TBI at different time points. We found that the ER stress and autophagy after TBI were inhibited, and the expressions of pyroptosis-related proteins induced by TBI, including NLRP3, Pro-Caspase1, Caspase1, GSDMD, GSDMD P30, and IL-18, were decreased upon PDGF treatment. Moreover, the rapamycin (RAPA, an autophagy activator) and tunicamycin (TM, an ER stress activator) eliminated the PDGF effect on the pyroptosis after TBI. Interestingly, the sodium 4-phenylbutyrate (4-PBA, an ER stress inhibitor) suppressed autophagy but 3-methyladenine (3-MA, an autophagy inhibitor) not for ER stress. The results revealed that PDGF improved the functional recovery after TBI, and the effects were markedly reversed by TM and RAPA. Taken together, this study provides a new insight that PDGF is a potential therapeutic strategy for enhancing the recovery of TBI.
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Affiliation(s)
- Fangfang Wu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou, China
| | - Renkan Zhang
- Department of Emergency, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou, China
| | - Weiyang Meng
- Department of Emergency, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou, China
| | - Lei Liu
- The First Hospital of Jiaxing or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Yingdan Tang
- Department of Emergency, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou, China
| | - Leilei Lu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou, China
| | - Leilei Xia
- Department of Emergency, Wenzhou People’s Hospital, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hongyu Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zhiguo Feng
- Department of Emergency, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou, China
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Daqing Chen
- Department of Emergency, The Second Affiliated Hospital and Yuying Children’s Hospital, Wenzhou Medical University, Wenzhou, China
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13
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He X, Li Y, Deng B, Lin A, Zhang G, Ma M, Wang Y, Yang Y, Kang X. The PI3K/AKT signalling pathway in inflammation, cell death and glial scar formation after traumatic spinal cord injury: Mechanisms and therapeutic opportunities. Cell Prolif 2022; 55:e13275. [PMID: 35754255 PMCID: PMC9436900 DOI: 10.1111/cpr.13275] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 04/17/2022] [Accepted: 05/24/2022] [Indexed: 02/06/2023] Open
Abstract
Objects Traumatic spinal cord injury (TSCI) causes neurological dysfunction below the injured segment of the spinal cord, which significantly impacts the quality of life in affected patients. The phosphoinositide 3kinase/serine‐threonine kinase (PI3K/AKT) signaling pathway offers a potential therapeutic target for the inhibition of secondary TSCI. This review summarizes updates concerning the role of the PI3K/AKT pathway in TSCI. Materials and Methods By searching articles related to the TSCI field and the PI3K/AKT signaling pathway, we summarized the mechanisms of secondary TSCI and the PI3K/AKT signaling pathway; we also discuss current and potential future treatment methods for TSCI based on the PI3K/AKT signaling pathway. Results Early apoptosis and autophagy after TSCI protect the body against injury; a prolonged inflammatory response leads to the accumulation of pro‐inflammatory factors and excessive apoptosis, as well as excessive autophagy in the surrounding normal nerve cells, thus aggravating TSCI in the subacute stage of secondary injury. Initial glial scar formation in the subacute phase is a protective mechanism for TSCI, which limits the spread of damage and inflammation. However, mature scar tissue in the chronic phase hinders axon regeneration and prevents the recovery of nerve function. Activation of PI3K/AKT signaling pathway can inhibit the inflammatory response and apoptosis in the subacute phase after secondary TSCI; inhibiting this pathway in the chronic phase can reduce the formation of glial scar. Conclusion The PI3K/AKT signaling pathway has an important role in the recovery of spinal cord function after secondary injury. Inducing the activation of PI3K/AKT signaling pathway in the subacute phase of secondary injury and inhibiting this pathway in the chronic phase may be one of the potential strategies for the treatment of TSCI.
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Affiliation(s)
- Xuegang He
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China.,The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, China
| | - Ying Li
- Medical School of Yan'an University, Yan'an University, Yan'an, China
| | - Bo Deng
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Aixin Lin
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China.,The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, China
| | - Guangzhi Zhang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China.,The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, China
| | - Miao Ma
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Yonggang Wang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China.,The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, China
| | - Yong Yang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.,The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, China
| | - Xuewen Kang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China.,The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, China
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14
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He X, Zhang J, Guo Y, Yang X, Huang Y, Hao D. Exosomal miR-9-5p derived from BMSCs alleviates apoptosis, inflammation and endoplasmic reticulum stress in spinal cord injury by regulating the HDAC5/FGF2 axis. Mol Immunol 2022; 145:97-108. [DOI: 10.1016/j.molimm.2022.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/17/2022] [Accepted: 03/02/2022] [Indexed: 12/15/2022]
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15
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Chen K, Rao Z, Dong S, Chen Y, Wang X, Luo Y, Gong F, Li X. Roles of the fibroblast growth factor signal transduction system in tissue injury repair. BURNS & TRAUMA 2022; 10:tkac005. [PMID: 35350443 PMCID: PMC8946634 DOI: 10.1093/burnst/tkac005] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/13/2021] [Indexed: 12/13/2022]
Abstract
Following injury, tissue autonomously initiates a complex repair process, resulting in either partial recovery or regeneration of tissue architecture and function in most organisms. Both the repair and regeneration processes are highly coordinated by a hierarchy of interplay among signal transduction pathways initiated by different growth factors, cytokines and other signaling molecules under normal conditions. However, under chronic traumatic or pathological conditions, the reparative or regenerative process of most tissues in different organs can lose control to different extents, leading to random, incomplete or even flawed cell and tissue reconstitution and thus often partial restoration of the original structure and function, accompanied by the development of fibrosis, scarring or even pathogenesis that could cause organ failure and death of the organism. Ample evidence suggests that the various combinatorial fibroblast growth factor (FGF) and receptor signal transduction systems play prominent roles in injury repair and the remodeling of adult tissues in addition to embryonic development and regulation of metabolic homeostasis. In this review, we attempt to provide a brief update on our current understanding of the roles, the underlying mechanisms and clinical application of FGFs in tissue injury repair.
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Affiliation(s)
| | | | - Siyang Dong
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
- Department of breast surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Yajing Chen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Xulan Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Yongde Luo
- Correspondence. Xiaokun Li, ; Fanghua Gong, ; Yongde Luo,
| | - Fanghua Gong
- Correspondence. Xiaokun Li, ; Fanghua Gong, ; Yongde Luo,
| | - Xiaokun Li
- Correspondence. Xiaokun Li, ; Fanghua Gong, ; Yongde Luo,
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16
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Zhang R, Xie L, Wu F, Xu J, Lu L, Cao L, Li L, Meng W, Zhang H, Shao C, Li X, Chen D. ALG-bFGF Hydrogel Inhibiting Autophagy Contributes to Protection of Blood-Spinal Cord Barrier Integrity via PI3K/Akt/FOXO1/KLF4 Pathway After SCI. Front Pharmacol 2022; 13:828896. [PMID: 35330841 PMCID: PMC8940228 DOI: 10.3389/fphar.2022.828896] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 01/24/2022] [Indexed: 12/16/2022] Open
Abstract
Promoting blood–spinal cord barrier (BSCB) repair at the early stage plays a crucial role in treatment of spinal cord injury (SCI). Excessive activation of autophagy can prevent recovery of BSCB after SCI. Basic fibroblast growth factor (bFGF) has been shown to promote BSCB repair and locomotor function recovery in SCI. However, the therapeutic effect of bFGF via direct administration on SCI is limited because of its rapid degradation and dilution at injury site. Based on these considerations, controlled release of bFGF in the lesion area is becoming an attractive strategy for SCI repair. At present, we have designed a sustained-release system of bFGF (called ALG-bFGF) using sodium alginate hydrogel, which is able to load large amounts of bFGF and suitable for in situ administration of bFGF in vivo. Here, traumatic SCI mice models and oxygen glucose deprivation (OGD)–stimulated human brain microvascular endothelial cells were performed to explore the effects and the underlying mechanisms of ALG-bFGF in promoting SCI repair. After a single in situ injection of ALG-bFGF hydrogel into the injured spinal cord, sustained release of bFGF from ALG hydrogel distinctly prevented BSCB destruction and improved motor functional recovery in mice after SCI, which showed better therapeutic effect than those in mice treated with bFGF solution or ALG. Evidences have demonstrated that autophagy is involved in maintaining BSCB integrity and functional restoration in animals after SCI. In this study, SCI/OGD exposure–induced significant upregulations of autophagy activation-related proteins (Beclin1, ATG5, LC3II/I) were distinctly decreased by ALG-bFGF hydrogel near the baseline and not less than it both in vivo and in vitro, and this inhibitory effect contributed to prevent BSCB destruction. Finally, PI3K inhibitor LY294002 and KLF4 inhibitor NSC-664704 were applied to further explore the underlying mechanism by which ALG-bFGF attenuated autophagy activation to alleviate BSCB destruction after SCI. The results further indicated that ALG-bFGF hydrogel maintaining BSCB integrity by inhibiting autophagy activation was regulated by PI3K/Akt/FOXO1/KLF4 pathway. In summary, our current study revealed a novel mechanism by which ALG-bFGF hydrogel improves BSCB and motor function recovery after SCI, providing an effective therapeutic strategy for SCI repair.
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Affiliation(s)
- Renkan Zhang
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ling Xie
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Fangfang Wu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ji Xu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Leilei Lu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Lin Cao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Lei Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Weiyang Meng
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
| | - Hongyu Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Chuxiao Shao
- Department of Hepatopancreatobiliary Surgery, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, China
| | - Xiaokun Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Daqing Chen
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
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17
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Zhou K, Wu Q, Yue J, Yu X, Ying X, Chen X, Zhou Y, Yang G, Tu W, Jiang S. Electroacupuncture suppresses spinal nerve ligation-induced neuropathic pain via regulation of synaptic plasticity through upregulation of basic fibroblast growth factor expression. Acupunct Med 2022; 40:379-388. [PMID: 35100811 DOI: 10.1177/09645284211066499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background: Improving synaptic plasticity is a good way to alleviate neuropathic pain. Electroacupuncture (EA) is currently used worldwide to treat this disease, but its specific mechanisms of action need further investigation. Evidence has suggested that basic fibroblast growth factor (bFGF) plays an important role in promoting nerve regeneration and can promote the expression of vascular endothelial growth factor (VEGF). Objective: In this study, we examined the effects of EA on synaptic plasticity and its underlying mechanism. Methods: A spinal nerve ligation (SNL) rat model was established. NSC37204 (a specific inhibitor of bFGF) was used to determine the relationship between bFGF and putative EA-mediated improvements in synaptic plasticity. Mechanical withdrawal threshold (MWT) and thermal withdrawal latency (TWL) were assessed to evaluate hyperalgesia in rats with SNL. Tissue morphology was detected by hematoxylin–eosin (HE) and Nissl staining, while neural plasticity and its molecular mechanisms were examined by Western blotting, quantitative real-time polymerase chain reaction (qPCR), dual-label immunohistochemistry and transmission electron microscopy. Results: We found that EA improved synaptic plasticity, consistent with higher levels of expression of bFGF and VEGF. Contrary to the beneficial effects of EA, NSC37204 promoted synaptic reconstruction. Furthermore, EA-induced improvements in the neurobehavioral state and improved synaptic plasticity were blocked by NSC37204, consistent with lower expression levels of bFGF and VEGF. Conclusion: These findings indicate that EA suppresses SNL-induced neuropathic pain by improving synaptic plasticity via upregulation of bFGF expression.
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Affiliation(s)
- Kecheng Zhou
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Qiaoyun Wu
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Jingjing Yue
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Xiaolan Yu
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Xinwang Ying
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Xiaolong Chen
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Ye Zhou
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Guanhu Yang
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Wenzhan Tu
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
| | - Songhe Jiang
- Department of Physical Medicine and Rehabilitation, The Second Affiliated Hospital and Yuying Children’s Hospital, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
- Integrative & Optimized Medicine Research Center, China-USA Institute for Acupuncture and Rehabilitation, Wenzhou Medical University, Wenzhou, P.R. China
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18
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Zheng B, Jin Y, Mi S, Xu W, Yang X, Hong Z, Wang Z. Dl-3-n-butylphthalide Attenuates Spinal Cord Injury via Regulation of MMPs and Junction Proteins in Mice. Neurochem Res 2021; 46:2297-2306. [PMID: 34086144 DOI: 10.1007/s11064-021-03361-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/13/2021] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
As a serious trauma of the neurological system, spinal cord injury (SCI) results in permanent disability, gives rise to immediate vascular damage and a wide range of matters that induce the breakage of blood spinal cord barrier (BSCB). SCI activates the expression of MMP-2/9, which are considered to accelerate the disruption of BSCB. Recent research shows that Dl-3-n-butylphthalide (NBP) exerted protective effects on blood spinal cord barrier in animals after SCI, but the underlying molecular mechanism of NBP on the BSCB undergoing SCI is unknown. Here, our research show that NBP inhibited the expression of MMP-2/9, then improved the permeability of BSCB following SCI. After the T9 level of spinal cord performed with a moderate injury, NBP was managed by intragastric administration and further performed once a day. NBP remarkably improved the permeability of BSCB and junction proteins degration, then promoted locomotion recovery. The protective effect of NBP on BSCB destruction is related to the regulation of MMP-2/9 induced by SCI. Moreover, NBP obviously inhibited the MMP-2/9 expression and junction proteins degradation in microvascular endothelial cells. In conclusion, our results indicate that MMP-2/9 are relevant to the breakdown of BSCB, NBP impairs BSCB destruction through inhibiting MMP-2/9 and promotes functional recovery subjected to SCI. NBP is likely to become a new nominee as a therapeutic to treat SCI via a transigent BSCB.
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Affiliation(s)
- Binbin Zheng
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Yanjun Jin
- Nursing Department, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Shuang Mi
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Wei Xu
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Xiangdong Yang
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China
| | - Zhenghua Hong
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China.
| | - Zhangfu Wang
- Department of Orthopaedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, 317000, Zhejiang, People's Republic of China.
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Huang F, Gao T, Wang W, Wang L, Xie Y, Tai C, Liu S, Cui Y, Wang B. Engineered basic fibroblast growth factor-overexpressing human umbilical cord-derived mesenchymal stem cells improve the proliferation and neuronal differentiation of endogenous neural stem cells and functional recovery of spinal cord injury by activating the PI3K-Akt-GSK-3β signaling pathway. Stem Cell Res Ther 2021; 12:468. [PMID: 34419172 PMCID: PMC8379754 DOI: 10.1186/s13287-021-02537-w] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/03/2021] [Indexed: 11/10/2022] Open
Abstract
Objectives To investigate the safety for clinic use and therapeutic effects of basic fibroblast growth factor (bFGF)-overexpressing human umbilical cord-derived mesenchymal stem cells (HUCMSCs) in mice with completely transected spinal cord injury (SCI). Methods Stable bFGF-overexpressing HUCMSCs clones were established by electrotransfection and then subjected to systematic safety evaluations. Then, bFGF-overexpressing and control HUCMSCs were used to treat mice with completely transected SCI by tail intravenous injection. Therapeutic outcomes were then investigated, including functional recovery of locomotion, histological structures, nerve regeneration, and recovery mechanisms. Results Stable bFGF-overexpressing HUCMSCs met the standards and safety of MSCs for clinic use. In the mouse SCI model, stable bFGF-overexpressing HUCMSCs markedly improved therapeutic outcomes such as reducing glial scar formation, improving nerve regeneration and proliferation of endogenous neural stem cells (NSCs), and increasing locomotion functional recovery of posterior limbs compared with the control HUCMSCs group. Furthermore, bFGF-overexpressing HUCMSCs promoted the proliferation and neuronal differentiation of NSCs in vitro through the PI3K-Akt-GSK-3β pathway. Conclusion bFGF-overexpressing HUCMSCs meet the requirements of clinical MSCs and improve evident therapeutic outcomes of mouse SCI treatment, which firmly supports the safety and efficacy of gene-modified MSCs for clinical application.
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Affiliation(s)
- Feifei Huang
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210000, China
| | - Tianyun Gao
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210000, China
| | - Wenqing Wang
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210000, China
| | - Liudi Wang
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210000, China
| | - Yuanyuan Xie
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210000, China
| | - Chenxun Tai
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210000, China
| | - Shuo Liu
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210000, China
| | - Yi Cui
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, 100081, China.
| | - Bin Wang
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210000, China.
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20
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Vargova I, Machova Urdzikova L, Karova K, Smejkalova B, Sursal T, Cimermanova V, Turnovcova K, Gandhi CD, Jhanwar-Uniyal M, Jendelova P. Involvement of mTOR Pathways in Recovery from Spinal Cord Injury by Modulation of Autophagy and Immune Response. Biomedicines 2021; 9:biomedicines9060593. [PMID: 34073791 PMCID: PMC8225190 DOI: 10.3390/biomedicines9060593] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 12/14/2022] Open
Abstract
Traumatic spinal cord injury (SCI) is untreatable and remains the leading cause of disability. Neuroprotection and recovery after SCI can be partially achieved by rapamycin (RAPA) treatment, an inhibitor of mTORC1, complex 1 of the mammalian target of rapamycin (mTOR) pathway. However, mechanisms regulated by the mTOR pathway are not only controlled by mTORC1, but also by a second mTOR complex (mTORC2). Second-generation inhibitor, pp242, inhibits both mTORC1 and mtORC2, which led us to explore its therapeutic potential after SCI and compare it to RAPA treatment. In a rat balloon-compression model of SCI, the effect of daily RAPA (5 mg/kg; IP) and pp242 (5 mg/kg; IP) treatment on inflammatory responses and autophagy was observed. We demonstrated inhibition of the mTOR pathway after SCI through analysis of p-S6, p-Akt, and p-4E-BP1 levels. Several proinflammatory cytokines were elevated in pp242-treated rats, while RAPA treatment led to a decrease in proinflammatory cytokines. Both RAPA and pp242 treatments caused an upregulation of LC3B and led to improved functional and structural recovery in acute SCI compared to the controls, however, a greater axonal sprouting was seen following RAPA treatment. These results suggest that dual mTOR inhibition by pp242 after SCI induces distinct mechanisms and leads to recovery somewhat inferior to that following RAPA treatment.
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Affiliation(s)
- Ingrid Vargova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska, 1083, 142 20 Prague, Czech Republic; (I.V.); (L.M.U.); (K.K.); (B.S.); (V.C.); (K.T.)
- 2nd Faculty of Medicine, Charles University, V Uvalu 84, 150 06 Prague, Czech Republic
| | - Lucia Machova Urdzikova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska, 1083, 142 20 Prague, Czech Republic; (I.V.); (L.M.U.); (K.K.); (B.S.); (V.C.); (K.T.)
| | - Kristyna Karova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska, 1083, 142 20 Prague, Czech Republic; (I.V.); (L.M.U.); (K.K.); (B.S.); (V.C.); (K.T.)
| | - Barbora Smejkalova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska, 1083, 142 20 Prague, Czech Republic; (I.V.); (L.M.U.); (K.K.); (B.S.); (V.C.); (K.T.)
- 2nd Faculty of Medicine, Charles University, V Uvalu 84, 150 06 Prague, Czech Republic
| | - Tolga Sursal
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA; (T.S.); (C.D.G.)
| | - Veronika Cimermanova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska, 1083, 142 20 Prague, Czech Republic; (I.V.); (L.M.U.); (K.K.); (B.S.); (V.C.); (K.T.)
| | - Karolina Turnovcova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska, 1083, 142 20 Prague, Czech Republic; (I.V.); (L.M.U.); (K.K.); (B.S.); (V.C.); (K.T.)
| | - Chirag D. Gandhi
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA; (T.S.); (C.D.G.)
| | - Meena Jhanwar-Uniyal
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA; (T.S.); (C.D.G.)
- Correspondence: (M.J.-U.); (P.J.); Tel.: +420-2-4106-2828 (P.J.)
| | - Pavla Jendelova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Videnska, 1083, 142 20 Prague, Czech Republic; (I.V.); (L.M.U.); (K.K.); (B.S.); (V.C.); (K.T.)
- 2nd Faculty of Medicine, Charles University, V Uvalu 84, 150 06 Prague, Czech Republic
- Correspondence: (M.J.-U.); (P.J.); Tel.: +420-2-4106-2828 (P.J.)
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Wu C, Chen H, Zhuang R, Zhang H, Wang Y, Hu X, Xu Y, Li J, Li Y, Wang X, Xu H, Ni W, Zhou K. Betulinic acid inhibits pyroptosis in spinal cord injury by augmenting autophagy via the AMPK-mTOR-TFEB signaling pathway. Int J Biol Sci 2021; 17:1138-1152. [PMID: 33867836 PMCID: PMC8040310 DOI: 10.7150/ijbs.57825] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 02/25/2021] [Indexed: 12/21/2022] Open
Abstract
Spinal cord injury (SCI) results in a wide range of disabilities. Its complex pathophysiological process limits the effectiveness of many clinical treatments. Betulinic acid (BA) has been shown to be an effective treatment for some neurological diseases, but it has not been studied in SCI. In this study, we assessed the role of BA in SCI and investigated its underlying mechanism. We used a mouse model of SCI, and functional outcomes following injury were assessed. Western blotting, ELISA, and immunofluorescence techniques were employed to analyze levels of autophagy, mitophagy, pyroptosis, and AMPK-related signaling pathways were also examined. Our results showed that BA significantly improved functional recovery following SCI. Furthermore, autophagy, mitophagy, ROS level and pyroptosis were implicated in the mechanism of BA in the treatment of SCI. Specifically, our results suggest that BA restored autophagy flux following injury, which induced mitophagy to eliminate the accumulation of ROS and inhibits pyroptosis. Further mechanistic studies revealed that BA likely regulates autophagy and mitophagy via the AMPK-mTOR-TFEB signaling pathway. Those results showed that BA can significantly promote the recovery following SCI and that it may be a promising therapy for SCI.
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Affiliation(s)
- Chenyu Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Huanwen Chen
- University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Rong Zhuang
- Department of Anesthesiology, Critical Care and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Haojie Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Yongli Wang
- Department of Orthopaedics, Huzhou Central Hospital, Huzhou 313000, China
| | - Xinli Hu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Yu Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Jiafeng Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Yao Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Hui Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Wenfei Ni
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
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22
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Jin LY, Li J, Wang KF, Xia WW, Zhu ZQ, Wang CR, Li XF, Liu HY. Blood-Spinal Cord Barrier in Spinal Cord Injury: A Review. J Neurotrauma 2021; 38:1203-1224. [PMID: 33292072 DOI: 10.1089/neu.2020.7413] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The blood-spinal cord barrier (BSCB), a physical barrier between the blood and spinal cord parenchyma, prevents the toxins, blood cells, and pathogens from entering the spinal cord and maintains a tightly controlled chemical balance in the spinal environment, which is necessary for proper neural function. A BSCB disruption, however, plays an important role in primary and secondary injury processes related to spinal cord injury (SCI). After SCI, the structure of the BSCB is broken down, which leads directly to leakage of blood components. At the same time, the permeability of the BSCB is also increased. Repairing the disruption of the BSCB could alleviate the SCI pathology. We review the morphology and pathology of the BSCB and progression of therapeutic methods targeting BSCB in SCI.
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Affiliation(s)
- Lin-Yu Jin
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| | - Jie Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P.R. China
| | - Kai-Feng Wang
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| | - Wei-Wei Xia
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| | - Zhen-Qi Zhu
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
| | - Chun-Ru Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P.R. China
| | - Xin-Feng Li
- Department of Spinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, P.R. China
| | - Hai-Ying Liu
- Department of Spinal Surgery, Peking University People's Hospital, Peking University, Beijing, P.R. China
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Luo Y, Xu T, Liu W, Rong Y, Wang J, Fan J, Yin G, Cai W. Exosomes derived from GIT1-overexpressing bone marrow mesenchymal stem cells promote traumatic spinal cord injury recovery in a rat model. Int J Neurosci 2021; 131:170-182. [PMID: 32223487 DOI: 10.1080/00207454.2020.1734598] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/27/2019] [Accepted: 01/24/2020] [Indexed: 01/07/2023]
Abstract
OBJECTIVE This study aims to explore the effects of exosomes derived from G protein-coupled receptor kinase 2 interacting protein 1 (GIT1)-overexpressing bone marrow mesenchymal stem cell (GIT1-BMSC-Exos) on the treatment of traumatic spinal cord injury (SCI) in a rat model. METHODS All the rats underwent a T10 laminectomy. A weight-drop impact was performed using a 10-g rod from a height of 12.5 mm except the sham group. Rats with SCI were distributed into three groups randomly and then treated with tail vein injection of GIT1-BMSCs-Exos, BMSCs-Exos and PBS, respectively. The effects of GIT1-Exos on glutamate (GLU)-induced apoptosis in vitro were also evaluated by TUNEL staining. RESULTS The results showed that rats treated with GIT1-BMSCs-Exos had better functional behavioral recovery than those treated with PBS or BMSCs-Exos only. The overexpression of GIT1 in BMSCs-Exos not only restrained glial scar formation and neuroinflammation after SCI, but also attenuated apoptosis and promoted axonal regeneration in the injured lesion area. Neuronal cell death induced by GLU was controlled remarkably in vitro as well. CONCLUSION In conclusion, our study suggested that the application of GIT1-BMSCs-Exos may provide a novel avenue for traumatic SCI treatment.
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Affiliation(s)
- Yongjun Luo
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Tao Xu
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wei Liu
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuluo Rong
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiaxing Wang
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jin Fan
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Guoyong Yin
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Weihua Cai
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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25
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Zhang Q, Xiong Y, Li B, Deng GY, Fu WW, Cao BC, Zong SH, Zeng GF. Total flavonoids of hawthorn leaves promote motor function recovery via inhibition of apoptosis after spinal cord injury. Neural Regen Res 2021; 16:350-356. [PMID: 32859797 PMCID: PMC7896213 DOI: 10.4103/1673-5374.286975] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Flavonoids have been reported to have therapeutic potential for spinal cord injury. Hawthorn leaves have abundant content and species of total flavonoids, and studies of the effects of the total flavonoids of hawthorn leaves on spinal cord injury have not been published in or outside China. Therefore, Sprague-Dawley rats were used to establish a spinal cord injury model by Allen’s method. Rats were intraperitoneally injected with 0.2 mL of different concentrations of total flavonoids of hawthorn leaves (5, 10, and 20 mg/kg) after spinal cord injury. Injections were administered once every 6 hours, three times a day, for 14 days. After treatment with various concentrations of total flavonoids of hawthorn leaves, the Basso, Beattie, and Bresnahan scores and histological staining indicated decreases in the lesion cavity and number of apoptotic cells of the injured spinal cord tissue; the morphological arrangement of the myelin sheath and nerve cells tended to be regular; and the Nissl bodies in neurons increased. The Basso, Beattie, and Bresnahan scores of treated spinal cord injury rats were increased. Western blot assays showed that the expression levels of pro-apoptotic Bax and cleaved caspase-3 were decreased, but the expression level of the anti-apoptotic Bcl-2 protein was increased. The improvement of the above physiological indicators showed a dose-dependent relationship with the concentration of total flavonoids of hawthorn leaves. The above findings confirm that total flavonoids of hawthorn leaves can reduce apoptosis and exert neuroprotective effects to promote the recovery of the motor function of rats with spinal cord injury. This study was approved by the Ethics Committee of the Guangxi Medical University of China (approval No. 201810042) in October 2018.
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Affiliation(s)
- Qiong Zhang
- School of Public Health Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Yin Xiong
- School of Public Health Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Bo Li
- School of Public Health Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Gui-Ying Deng
- Research Center for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Wen-Wen Fu
- School of Public Health Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Bai-Chuan Cao
- Department of Spine Osteopathic Surgery, The First Affiliated Hospital of Guangxi Medical University, Guangxi Zhuang Autonomous Region, China
| | - Shao-Hui Zong
- Department of Spine Osteopathic Surgery, The First Affiliated Hospital of Guangxi Medical University; Research Center for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Gao-Feng Zeng
- School of Public Health Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
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Therapeutic Role of Protein Tyrosine Phosphatase 1B in Parkinson's Disease via Antineuroinflammation and Neuroprotection In Vitro and In Vivo. PARKINSONS DISEASE 2020; 2020:8814236. [PMID: 33456749 PMCID: PMC7787797 DOI: 10.1155/2020/8814236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/18/2020] [Accepted: 12/11/2020] [Indexed: 12/18/2022]
Abstract
Parkinson's disease (PD) is one of the most widespread neurodegenerative diseases. However, the currently available treatments could only relieve symptoms. Novel therapeutic targets are urgently needed. Several previous studies mentioned that protein tyrosine phosphatase 1B (PTP1B) acted as a negative regulator of the insulin signal pathway and played a significant role in the inflammation process. However, few studies have investigated the role of PTP1B in the central nervous system. Our study showed that suramin, an inhibitor of PTP1B, could improve neuronal damage. It could significantly attenuate the interferon-gamma-induced upregulation of proinflammatory cytokines, including inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB). It enhanced M2 type microglia markers, such as arginase-1 and Ym-1 in BV2 murine microglial cells. PTP1B inhibition also reversed 6-hydroxydopamine- (6-OHDA-) induced downregulation of phospho-cAMP response element-binding protein (p-CREB) and brain-derived neurotrophic factor (BDNF) in SH-SY5Y cells. Besides, we knocked down and overexpressed PTP1B in the SH-SY5Y cells to confirm its role in neuroprotection. We also verified the effect of suramin in the zebrafish PD model. Treatment with suramin could significantly reverse 6-OHDA-induced locomotor deficits and improved tyrosine hydroxylase (TH) via attenuating endoplasmic reticulum (ER) stress biomarkers. These results support that PTP1B could potentially regulate PD via antineuroinflammation and antiapoptotic pathways.
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Topical Application of Fibroblast Growth Factor 10-PLGA Microsphere Accelerates Wound Healing via Inhibition of ER Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8586314. [PMID: 33354279 PMCID: PMC7735840 DOI: 10.1155/2020/8586314] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/20/2020] [Accepted: 11/09/2020] [Indexed: 12/16/2022]
Abstract
There is a high incidence of acute and chronic skin defects caused by various reasons in clinically practice. The repair and functional reconstruction of skin defects have become a major clinical problem, which needs to be solved urgently. Previous studies have shown that fibroblast growth factor 10 (FGF10) plays a functional role in promoting the proliferation, migration, and differentiation of epithelial cells. However, little is known about the effect of FGF10 on the recovery process after skin damage. In this study, we found that the expression of endogenous FGF10 was increased during wound healing. We prepared FGF10-loaded poly(lactic-co-glycolic acid) (FGF10-PLGA) microspheres, and it could sustain release of FGF10 both in vitro and in vivo, accelerating wound healing. Further analysis revealed that compared with FGF10 alone, FGF10-PLGA microspheres significantly improved granulation formation, collagen synthesis, cell proliferation, and blood vessel density. In the meantime, we found that FGF10-PLGA microspheres inhibited the expression of endoplasmic reticulum (ER) stress markers. Notably, activating ER stress with tunicamycin (TM) reduced therapeutic effects of FGF10-PLGA microspheres in wound healing, whereas inhibition of ER stress with 4-phenyl butyric acid (4-PBA) improved the function of FGF10-PLGA microspheres. Taken together, this study indicates that FGF10-PLGA microspheres accelerate wound healing presumably through modulating ER stress.
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28
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Zhou K, Zheng Z, Li Y, Han W, Zhang J, Mao Y, Chen H, Zhang W, Liu M, Xie L, Zhang H, Xu H, Xiao J. TFE3, a potential therapeutic target for Spinal Cord Injury via augmenting autophagy flux and alleviating ER stress. Am J Cancer Res 2020; 10:9280-9302. [PMID: 32802192 PMCID: PMC7415792 DOI: 10.7150/thno.46566] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/20/2020] [Indexed: 12/11/2022] Open
Abstract
Background and Aim: Increasing evidence suggests that spinal cord injury (SCI)-induced defects in autophagic flux may contribute to an impaired ability for neurological repair following injury. Transcription factor E3 (TFE3) plays a crucial role in oxidative metabolism, lysosomal homeostasis, and autophagy induction. Here, we investigated the role of TFE3 in modulating autophagy following SCI and explored its impact on neurological recovery. Methods: Histological analysis via HE, Nissl and Mason staining, survival rate analysis, and behavioral testing via BMS and footprint analysis were used to determine functional recovery after SCI. Quantitative real-time polymerase chain reaction, Western blotting, immunofluorescence, TUNEL staining, enzyme-linked immunosorbent assays, and immunoprecipitation were applied to examine levels of autophagy flux, ER-stress-induced apoptosis, oxidative stress, and AMPK related signaling pathways. In vitro studies using PC12 cells were performed to discern the relationship between ROS accumulation and autophagy flux blockade. Results: Our results showed that in SCI, defects in autophagy flux contributes to ER stress, leading to neuronal death. Furthermore, SCI enhances the production of reactive oxygen species (ROS) that induce lysosomal dysfunction to impair autophagy flux. We also showed that TFE3 levels are inversely correlated with ROS levels, and increased TFE3 levels can lead to improved outcomes. Finally, we showed that activation of TFE3 after SCI is partly regulated by AMPK-mTOR and AMPK-SKP2-CARM1 signaling pathways. Conclusions: TFE3 is an important regulator in ROS-mediated autophagy dysfunction following SCI, and TFE3 may serve as a promising target for developing treatments for SCI.
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Abbaszadeh F, Fakhri S, Khan H. Targeting apoptosis and autophagy following spinal cord injury: Therapeutic approaches to polyphenols and candidate phytochemicals. Pharmacol Res 2020; 160:105069. [PMID: 32652198 DOI: 10.1016/j.phrs.2020.105069] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/28/2020] [Accepted: 07/03/2020] [Indexed: 12/11/2022]
Abstract
Spinal cord injury (SCI) is a neurological disorder associated with the loss of sensory and motor function. Understanding the precise dysregulated signaling pathways, especially apoptosis and autophagy following SCI, is of vital importance in developing innovative therapeutic targets and treatments. The present study lies in the fact that it reveals the precise dysregulated signaling mediators of apoptotic and autophagic pathways following SCI and also examines the effects of polyphenols and other candidate phytochemicals. It provides new insights to develop new treatments for post-SCI complications. Accordingly, a comprehensive review was conducted using electronic databases including, Scopus, Web of Science, PubMed, and Medline, along with the authors' expertise in apoptosis and autophagy as well as their knowledge about the effects of polyphenols and other phytochemicals on SCI pathogenesis. The primary mechanical injury to spinal cord is followed by a secondary cascade of apoptosis and autophagy that play critical roles during SCI. In terms of pharmacological mechanisms, caspases, Bax/Bcl-2, TNF-α, and JAK/STAT in apoptosis along with LC3 and Beclin-1 in autophagy have shown a close interconnection with the inflammatory pathways mainly glutamatergic, PI3K/Akt/mTOR, ERK/MAPK, and other cross-linked mediators. Besides, apoptotic pathways have been shown to regulate autophagy mediators and vice versa. Prevailing evidence has highlighted the importance of modulating these signaling mediators/pathways by polyphenols and other candidate phytochemicals post-SCI. The present review provides dysregulated signaling mediators and therapeutic targets of apoptotic and autophagic pathways following SCI, focusing on the modulatory effects of polyphenols and other potential phytochemical candidates.
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Affiliation(s)
- Fatemeh Abbaszadeh
- Department of Neuroscience, Faculty of Advanced Technologies in Medical Sciences, Iran University of Medical Sciences, Tehran, Iran; Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6734667149, Iran.
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan, 23200, Pakistan.
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Hu X, Li R, Wu Y, Li Y, Zhong X, Zhang G, Kang Y, Liu S, Xie L, Ye J, Xiao J. Thermosensitive heparin-poloxamer hydrogel encapsulated bFGF and NGF to treat spinal cord injury. J Cell Mol Med 2020; 24:8166-8178. [PMID: 32515141 PMCID: PMC7348165 DOI: 10.1111/jcmm.15478] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 04/18/2020] [Accepted: 05/24/2020] [Indexed: 01/10/2023] Open
Abstract
The application of growth factors (GFs) for treating chronic spinal cord injury (SCI) has been shown to promote axonal regeneration and functional recovery. However, direct administration of GFs is limited by their rapid degradation and dilution at the injured sites. Moreover, SCI recovery is a multifactorial process that requires multiple GFs to participate in tissue regeneration. Based on these facts, controlled delivery of multiple growth factors (GFs) to lesion areas is becoming an attractive strategy for repairing SCI. Presently, we developed a GFs‐based delivery system (called GFs‐HP) that consisted of basic fibroblast growth factor (bFGF), nerve growth factor (NGF) and heparin‐poloxamer (HP) hydrogel through self‐assembly mode. This GFs‐HP was a kind of thermosensitive hydrogel that was suitable for orthotopic administration in vivo. Meanwhile, a 3D porous structure of this hydrogel is commonly used to load large amounts of GFs. After single injection of GFs‐HP into the lesioned spinal cord, the sustained release of NGF and bFGF from HP could significantly improve neuronal survival, axon regeneration, reactive astrogliosis suppression and locomotor recovery, when compared with the treatment of free GFs or HP. Moreover, we also revealed that these neuroprotective and neuroregenerative effects of GFs‐HP were likely through activating the phosphatidylinositol 3 kinase and protein kinase B (PI3K/Akt) and mitogen‐activated protein kinase/extracellular signal‐regulated kinase (MAPK/ERK) signalling pathways. Overall, our work will provide an effective therapeutic strategy for SCI repair.
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Affiliation(s)
- Xiaoli Hu
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China.,Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Rui Li
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China.,Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China.,School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Yanqing Wu
- The Institute of Life Sciences, Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou University, Wenzhou, China
| | - Yi Li
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Xingfeng Zhong
- Department of Anesthesia, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Guanyinsheng Zhang
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Yanmin Kang
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Shuhua Liu
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Ling Xie
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Junming Ye
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China.,The Institute of Life Sciences, Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou University, Wenzhou, China
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31
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Toosi S, Behravan J. Osteogenesis and bone remodeling: A focus on growth factors and bioactive peptides. Biofactors 2020; 46:326-340. [PMID: 31854489 DOI: 10.1002/biof.1598] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 11/30/2019] [Indexed: 12/14/2022]
Abstract
Bone is one of the most frequently transplanted tissues. The bone structure and its physiological function and stem cells biology were known to be closely related to each other for many years. Bone is considered a home to the well-known systems of postnatal mesenchymal stem cells (MSCs). These bone resident MSCs provide a range of growth factors (GF) and cytokines to support cell growth following injury. These GFs include a group of proteins and peptides produced by different cells which are regulators of important cell functions such as division, migration, and differentiation. GF signaling controls the formation and development of the MSCs condensation and plays a critical role in regulating osteogenesis, chondrogenesis, and bone/mineral homeostasis. Thus, a combination of both MSCs and GFs receives high expectations in regenerative medicine, particularly in bone repair applications. It is known that the delivery of exogenous GFs to the non-union bone fracture site remarkably improves healing results. Here we present updated information on bone tissue engineering with a specific focus on GF characteristics and their application in cellular functions and tissue healing. Moreover, the interrelation of GFs with the damaged bone microenvironment and their mechanistic functions are discussed.
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Affiliation(s)
- Shirin Toosi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical, Mashhad, Iran
- Food and Drug Administration, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Javad Behravan
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical, Mashhad, Iran
- School of Pharmacy, University of Waterloo, Waterloo, Ontario, Canada
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Tan X, Tao Q, Li G, Xiang L, Zheng X, Zhang T, Wu C, Li D. Fibroblast Growth Factor 2 Attenuates Renal Ischemia-Reperfusion Injury via Inhibition of Endoplasmic Reticulum Stress. Front Cell Dev Biol 2020; 8:147. [PMID: 32266254 PMCID: PMC7105877 DOI: 10.3389/fcell.2020.00147] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 02/21/2020] [Indexed: 12/14/2022] Open
Abstract
Acute kidney injury (AKI) is a serious clinical disease that is mainly caused by renal ischemia-reperfusion (I/R) injury, sepsis, and nephrotoxic drugs. The pathologic mechanism of AKI is very complex and may involve oxidative stress, inflammatory response, autophagy, apoptosis, and endoplasmic reticulum (ER) stress. The basic fibroblast growth factor (FGF2) is a canonic member of the FGF family that plays a crucial role in various cellular processes, including organ development, wound healing, and tissue regeneration. However, few studies have reported the potential therapeutic effect of FGF2 in the repair of renal ischemic injury in the past two decades. In the present study, we investigated the protective effect of FGF2 on renal I/R injury using Sprague-Dawley and NRK-52E cells. Our results showed that FGF2 significantly attenuates the apoptosis of kidney tissues after I/R injury through the inhibition of excessive ER stress. Moreover, FGF2 also alleviated the excessive ER stress and apoptosis in cultured NRK-52E cells injured by tert-Butyl hydroperoxide (TBHP). Significantly, phosphatidylinositol 3-kinase (PI3K)-selective inhibitor LY294002 and mitogen-activated protein kinase kinase (MEK)-selective inhibitor U0126 were utilized in the present study to examine the protective mechanism of FGF2. Our in vitro experimental results confirmed that both LY294002 and U0126 largely abolished the protective effect of FGF2. Taken together, the findings of the present study indicated that FGF2 attenuates I/R-induced renal epithelial apoptosis by suppressing excessive ER stress via the activation of the PI3K/AKT and MEK-ERK1/2 signaling pathways.
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Affiliation(s)
- Xiaohua Tan
- Department of Pathology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Qianyu Tao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Beilun District People's Hospital of Ningbo, Ningbo, China
| | - Guixiu Li
- Outpatient Operating Room, Jiaozhou Central Hospital of Qingdao, Qingdao, China
| | - Lijun Xiang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xiaomeng Zheng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Beilun District People's Hospital of Ningbo, Ningbo, China
| | - Tianzhen Zhang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Cuijiao Wu
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Dequan Li
- Department of Traumatology Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Wang P, Zhao H, Yao Y, Lu C, Ma J, Chen R, Pan J. Repair of facial nerve crush injury in rabbits using collagen plus basic fibroblast growth factor. J Biomed Mater Res A 2020; 108:1329-1337. [PMID: 32090462 DOI: 10.1002/jbm.a.36905] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/05/2019] [Accepted: 02/17/2020] [Indexed: 01/21/2023]
Abstract
Facial nerves are frequently crushed or cut during facial surgery. In this study, the feasibility of repairing facial nerves in rabbits after crush or cut off injury was evaluated using collagen conduits with A collagen-binding domain (CBD)-human basic fibroblast growth factor (bFGF). A total of 39 six-month-old New Zealand White rabbits were randomly divided into four groups of nine rabbits, and bilateral crush or cut off injuries were made on each animal's face. Three rabbits were classified as the healthy control. The facial nerves were cut or crushed and then were either untreated or wrapped with a collagen conduit plus bFGF. At the 15, 30, and 90 days after the injury, three rabbits in each group were sacrificed. Regeneration of the injured facial nerve was evaluated using electrophysiological examination (compound muscle action potentials, CAMPs), scanning electron microscopy, and histological observation. The results suggested that using collagen conduits with recombinant proteins CBD-bFGF to repair facial nerves with crush or cut off injuries promoted functional facial nerve recovery. This treatment, as a possible therapeutic for patients with facial nerve injury, requires further investigation.
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Affiliation(s)
- Piao Wang
- Department of Oral and Maxillofacial Plastic & Trauma Surgery, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Hao Zhao
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yao Yao
- Department of Prosthodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Chao Lu
- Department of General Dentistry, Beijing Chongwen Hospital of Stomatology, Beijing, China
| | - Jinling Ma
- Department of Multidisciplinary Treatment Center, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Renji Chen
- Department of Oral and Maxillofacial Plastic & Trauma Surgery, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Juli Pan
- Department of Multidisciplinary Treatment Center, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
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Astrocytic YAP Promotes the Formation of Glia Scars and Neural Regeneration after Spinal Cord Injury. J Neurosci 2020; 40:2644-2662. [PMID: 32066583 DOI: 10.1523/jneurosci.2229-19.2020] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 02/03/2020] [Accepted: 02/05/2020] [Indexed: 12/15/2022] Open
Abstract
Yes-associated protein (YAP) transcriptional coactivator is negatively regulated by the Hippo pathway and functions in controlling the size of multiple organs, such as liver during development. However, it is not clear whether YAP signaling participates in the process of the formation of glia scars after spinal cord injury (SCI). In this study, we found that YAP was upregulated and activated in astrocytes of C57BL/6 male mice after SCI in a Hippo pathway-dependent manner. Conditional knockout (KO) of yap in astrocytes significantly inhibited astrocytic proliferation, impaired the formation of glial scars, inhibited the axonal regeneration, and impaired the behavioral recovery of C57BL/6 male mice after SCI. Mechanistically, the bFGF was upregulated after SCI and induced the activation of YAP through RhoA pathways, thereby promoting the formation of glial scars. Additionally, YAP promoted bFGF-induced proliferation by negatively controlling nuclear distribution of p27Kip1 mediated by CRM1. Finally, bFGF or XMU-MP-1 (an inhibitor of Hippo kinase MST1/2 to activate YAP) injection indeed activated YAP signaling and promoted the formation of glial scars and the functional recovery of mice after SCI. These findings suggest that YAP promotes the formation of glial scars and neural regeneration of mice after SCI, and that the bFGF-RhoA-YAP-p27Kip1 pathway positively regulates astrocytic proliferation after SCI.SIGNIFICANCE STATEMENT Glial scars play critical roles in neuronal regeneration of CNS injury diseases, such as spinal cord injury (SCI). Here, we provide evidence for the function of Yes-associated protein (YAP) in the formation of glial scars after SCI through regulation of astrocyte proliferation. As a downstream of bFGF (which is upregulated after SCI), YAP promotes the proliferation of astrocytes through negatively controlling nuclear distribution of p27Kip1 mediated by CRM1. Activation of YAP by bFGF or XMU-MP-1 injection promotes the formation of glial scar and the functional recovery of mice after SCI. These results suggest that the bFGF-RhoA-YAP-p27Kip1 axis for the formation of glial scars may be a potential therapeutic strategy for SCI patients.
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Li JH, Shi ZJ, Li Y, Pan B, Yuan SY, Shi LL, Hao Y, Cao FJ, Feng SQ. Bioinformatic identification of key candidate genes and pathways in axon regeneration after spinal cord injury in zebrafish. Neural Regen Res 2020; 15:103-111. [PMID: 31535658 PMCID: PMC6862403 DOI: 10.4103/1673-5374.264460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Zebrafish and human genomes are highly homologous; however, despite this genomic similarity, adult zebrafish can achieve neuronal proliferation, regeneration and functional restoration within 6–8 weeks after spinal cord injury, whereas humans cannot. To analyze differentially expressed zebrafish genes between axon-regenerated neurons and axon-non-regenerated neurons after spinal cord injury, and to explore the key genes and pathways of axonal regeneration after spinal cord injury, microarray GSE56842 was analyzed using the online tool, GEO2R, in the Gene Expression Omnibus database. Gene ontology and protein-protein interaction networks were used to analyze the identified differentially expressed genes. Finally, we screened for genes and pathways that may play a role in spinal cord injury repair in zebrafish and mammals. A total of 636 differentially expressed genes were obtained, including 255 up-regulated and 381 down-regulated differentially expressed genes in axon-regenerated neurons. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment results were also obtained. A protein-protein interaction network contained 480 node genes and 1976 node connections. We also obtained the 10 hub genes with the highest correlation and the two modules with the highest score. The results showed that spectrin may promote axonal regeneration after spinal cord injury in zebrafish. Transforming growth factor beta signaling may inhibit repair after spinal cord injury in zebrafish. Focal adhesion or tight junctions may play an important role in the migration and proliferation of some cells, such as Schwann cells or neural progenitor cells, after spinal cord injury in zebrafish. Bioinformatic analysis identified key candidate genes and pathways in axonal regeneration after spinal cord injury in zebrafish, providing targets for treatment of spinal cord injury in mammals.
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Affiliation(s)
- Jia-He Li
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhong-Ju Shi
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Yan Li
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Bin Pan
- Department of Orthopedics, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu Province, China
| | - Shi-Yang Yuan
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Lin-Lin Shi
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Yan Hao
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Fu-Jiang Cao
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Shi-Qing Feng
- Department of Orthopedics, Tianjin Medical University General Hospital; Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neurorepair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
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Feng CW, Chen NF, Chan TF, Chen WF. Therapeutic Role of Protein Tyrosine Phosphatase 1B in Parkinson's Disease via Antineuroinflammation and Neuroprotection In Vitro and In Vivo. PARKINSON'S DISEASE 2020. [PMID: 33456749 DOI: 10.1155/2020/8814236.ecollection2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Parkinson's disease (PD) is one of the most widespread neurodegenerative diseases. However, the currently available treatments could only relieve symptoms. Novel therapeutic targets are urgently needed. Several previous studies mentioned that protein tyrosine phosphatase 1B (PTP1B) acted as a negative regulator of the insulin signal pathway and played a significant role in the inflammation process. However, few studies have investigated the role of PTP1B in the central nervous system. Our study showed that suramin, an inhibitor of PTP1B, could improve neuronal damage. It could significantly attenuate the interferon-gamma-induced upregulation of proinflammatory cytokines, including inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB). It enhanced M2 type microglia markers, such as arginase-1 and Ym-1 in BV2 murine microglial cells. PTP1B inhibition also reversed 6-hydroxydopamine- (6-OHDA-) induced downregulation of phospho-cAMP response element-binding protein (p-CREB) and brain-derived neurotrophic factor (BDNF) in SH-SY5Y cells. Besides, we knocked down and overexpressed PTP1B in the SH-SY5Y cells to confirm its role in neuroprotection. We also verified the effect of suramin in the zebrafish PD model. Treatment with suramin could significantly reverse 6-OHDA-induced locomotor deficits and improved tyrosine hydroxylase (TH) via attenuating endoplasmic reticulum (ER) stress biomarkers. These results support that PTP1B could potentially regulate PD via antineuroinflammation and antiapoptotic pathways.
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Affiliation(s)
- Chien-Wei Feng
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 807377, Taiwan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807377, Taiwan
| | - Nan-Fu Chen
- Division of Neurosurgery, Department of Surgery, Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan
| | - Te-Fu Chan
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 807377, Taiwan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807377, Taiwan
| | - Wu-Fu Chen
- Department of Neurosurgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Neurosurgery, Xiamen Chang Gung Hospital, Xiamen, Fujian, China
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
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Guo Z, Li L, Gao Y, Zhang X, Cheng M. RETRACTED ARTICLE: Overexpression of lncRNA ANRIL aggravated hydrogen peroxide-disposed injury in PC-12 cells via inhibiting miR-499a/PDCD4 axis-mediated PI3K/Akt/mTOR/p70S6K pathway. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:2624-2633. [DOI: 10.1080/21691401.2019.1629953] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Zhiliang Guo
- Department of Orthopedic, The 89 Hospital of Chinese PLA, Weifang, China
| | - Lanlan Li
- Clinic Medical College, Weifang Medical University, Weifang, China
| | - Yu Gao
- Clinic Medical College, Weifang Medical University, Weifang, China
| | - Xiaoyun Zhang
- Clinic Medical College, Weifang Medical University, Weifang, China
| | - Min Cheng
- Clinic Medical College, Weifang Medical University, Weifang, China
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Zhou MF, Feng ZP, Ou YC, Peng JJ, Li K, Gong HD, Qiu BH, Liu YW, Wang YJ, Qi ST. Endoplasmic reticulum stress induces apoptosis of arginine vasopressin neurons in central diabetes insipidus via PI3K/Akt pathway. CNS Neurosci Ther 2019; 25:562-574. [PMID: 30677238 PMCID: PMC6488892 DOI: 10.1111/cns.13089] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/21/2018] [Accepted: 11/08/2018] [Indexed: 12/11/2022] Open
Abstract
Aims Central diabetes insipidus (CDI), a typical complication caused by pituitary stalk injury, often occurs after surgery, trauma, or tumor compression around hypothalamic structures such as the pituitary stalk and optic chiasma. CDI is linked to decreased arginine vasopressin (AVP) neurons in the hypothalamic supraoptic nucleus and paraventricular nucleus, along with a deficit in circulating AVP and oxytocin. However, little has been elucidated about the changes in AVP neurons in CDI. Hence, our study was designed to understand the role of several pathophysiologic changes such as endoplasmic reticulum (ER) stress and apoptosis of AVP neurons in CDI. Methods In a novel pituitary stalk electric lesion (PEL) model to mimic CDI, immunofluorescence and immunoblotting were used to understand the underlying regulatory mechanisms. Results We reported that in CDI condition, generated by PEL, ER stress induced apoptosis of AVP neurons via activation of the PI3K/Akt and ERK pathways. Furthermore, application of N‐acetylcysteine protected hypothalamic AVP neurons from ER stress‐induced apoptosis through blocking the PI3K/Akt and ERK pathways. Conclusion Our findings showed that AVP neurons underwent apoptosis induced by ER stress, and ER stress might play a vital role in CDI condition through the PI3K/Akt and ERK pathways.
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Affiliation(s)
- Ming-Feng Zhou
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhan-Peng Feng
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yi-Chao Ou
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jun-Jie Peng
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Kai Li
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Hao-Dong Gong
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Bing-Hui Qiu
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ya-Wei Liu
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yong-Jia Wang
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Song-Tao Qi
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Li H, Zhang X, Qi X, Zhu X, Cheng L. Icariin Inhibits Endoplasmic Reticulum Stress-induced Neuronal Apoptosis after Spinal Cord Injury through Modulating the PI3K/AKT Signaling Pathway. Int J Biol Sci 2019; 15:277-286. [PMID: 30745820 PMCID: PMC6367543 DOI: 10.7150/ijbs.30348] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/28/2018] [Indexed: 12/13/2022] Open
Abstract
Endoplasmic reticulum (ER) stress-induced neuronal apoptosis is a crucial pathological process of spinal cord injury (SCI). In our previous study, icariin (ICA) showed neuroprotective effects in SCI. However, the relationships between ER stress and ICA in SCI are unclear yet. Therefore, whether ICA could ameliorate SCI via attenuating ER stress was investigated in vitro and in vivo. Adult mice were established SCI model and received vehicle solution or ICA by gavage once per day in vivo. The primary cultured cells were treated with or without thapsigargin (TG), ICA or LY294002 to induce ER stress in vitro. Motor dysfunction, neuronal apoptosis, tissue damage and inhibition of PI3K/AKT pathway were induced by ER stress after SCI. But ICA administration significantly enhanced motor recovery and protected spinal cord tissues against infraction and hemorrhage, etc. post injury. Meanwhile, the expression of ER stress markers ATF6, IRE1α, GRP78, XBP1 and eIF2α was decreased, while the level of p-AKT/AKT was increased by ICA. Furthermore, ICA significantly inhibited the expression of ER stress apoptotic proteins caspase-12, CHOP, Bax/Bcl-2, caspase-9 and caspase-3. Moreover, immunofluorescence double staining indicated that ICA reduced GRP78, CHOP and TUNEL positive neurons following SCI. However, this beneficial effect of ICA was abolished by PI3K/AKT inhibitor LY294002 in vitro. Finally, ICA preserved the ultra-structure of ER by transmission electron microscope histologically. This study suggested that the neuroprotective effect of ICA on motor recovery and neuronal survival was related to attenuating ER stress via PI3K/AKT signaling pathway after SCI.
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Affiliation(s)
- Haotian Li
- Department of Spine Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China.,Key Laboratory of spine and spinal cord injury repair and regeneration (Tongji University), Ministry of Education, Shanghai, China
| | - Xinran Zhang
- School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai 200072, China
| | - Xi Qi
- Department of Spine Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China.,Key Laboratory of spine and spinal cord injury repair and regeneration (Tongji University), Ministry of Education, Shanghai, China
| | - Xu Zhu
- Department of Spine Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China.,Key Laboratory of spine and spinal cord injury repair and regeneration (Tongji University), Ministry of Education, Shanghai, China
| | - Liming Cheng
- Department of Spine Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China.,Key Laboratory of spine and spinal cord injury repair and regeneration (Tongji University), Ministry of Education, Shanghai, China
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Min SK, Shim HJ, Shin HS. 3D Astrogliosis Model with bFGF and GFAP Expression Profiles Corresponding to an MCAO-injured Brain. BIOTECHNOL BIOPROC E 2018. [DOI: 10.1007/s12257-018-0207-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Li Y, Sun Y, Cai M, Zhang H, Gao N, Huang H, Cui S, Yao D. Fas Ligand Gene (Faslg) Plays an Important Role in Nerve Degeneration and Regeneration After Rat Sciatic Nerve Injury. Front Mol Neurosci 2018; 11:210. [PMID: 29970988 PMCID: PMC6018423 DOI: 10.3389/fnmol.2018.00210] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 05/28/2018] [Indexed: 01/09/2023] Open
Abstract
Wallerian degeneration (WD) is associated with changes in the expression levels of a large number of genes. However, the effects of these up- or down-regulated genes are poorly understood. We have reported some key factors that are differentially regulated during WD in our previous research. Here, we explored the roles of Fas ligand gene (Faslg) in WD after rat sciatic nerve injury. The data showed that Faslg was up-regulated in injured nerves. Expression changed of Faslg in Schwann cells (SCs) resulted in alterations in the release of related factors. Silencing or overexpression of Faslg affected SC proliferation, migration, and apoptosis through β-catenin, nuclear factor-κB (NF-κB), and caspase-3 pathways in vivo and in vitro. Our data suggest that Faslg is a key regulatory gene that affects nerve repair and regeneration in peripheral nerve injury. This study sheds new light on the effects of Faslg on peripheral nerve degeneration and/or regeneration.
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Affiliation(s)
- Yuting Li
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
| | - Yuhua Sun
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China.,Genetic Laboratory, Lianyungang Maternal and Child Health Hospital, Lianyungang, China
| | - Min Cai
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
| | - Huanhuan Zhang
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
| | - Nannan Gao
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
| | - Huiwei Huang
- School of Medicine, Nantong University, Nantong, China
| | - Shusen Cui
- Hand Surgery, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Dengbing Yao
- School of Life Sciences, Co-innovation Center of Neuroregeneration, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, China
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Zhang J, Wu Y. microRNA-182-5p alleviates spinal cord injury by inhibiting inflammation and apoptosis through modulating the TLR4/NF-κB pathway. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:2948-2958. [PMID: 31938420 PMCID: PMC6958081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 03/11/2018] [Indexed: 06/10/2023]
Abstract
Inflammatory response and apoptosis play an important role in progression of spinal cord injury (SCI). Recently, aberrant microRNAs (miRNAs) have emerged as a key regulator in SCI. However, it remains unknown whether and how miRNAs mediated the inflammatory response after SCI. The aim of this study was to evaluate the potential role of miRNAs in SCI and elucidate underlying molecular mechanisms. First, we analyzed the microRNA expression profile in spinal cords from rats following SCI, using miRNA microarray. Interestingly, miR-182-5p was one of miRNAs most significantly downregulated in SCI. It has been reported as an inflammation suppressor in different organ injury models. Here, we used a cell model to verify the regulatory function and mechanism of miR-182-5p on inflammatory response in SCI. Overexpression of miR-182-5p attenuated H2O2-induced inflammation as reflected by reduction in proinflammatory cytokines in C8-D1A cells. Meanwhile, enhanced miR-182-5p expression significantly suppressed H2O2-induced apoptosis. Toll-like receptor 4 (TLR4), an important regulator of nuclear factor kappa-B (NF-κB) signaling pathway, was identified as a novel target of miR-182-5p in C8-D1A cells. Furthermore, overexpression of TLR4 reversed inhibitory effects of miR-182-5p overexpression on inflammation and apoptosis. More importantly, we found that miR-182-5p blocked phosphorylation of nuclear p65 and promoted phosphorylation of IκB-α in H2O2-treated C8-D1A cells. Our results confirm that miR-182-5p alleviates inflammation and apoptosis via inactivation of TLR4/NF-κB pathway in an H2O2-induced cell model. Our findings suggest that miR-182-5p may be a potential therapeutic target of SCI in the future.
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Affiliation(s)
- Junfeng Zhang
- Department of Acupuncture, Tuina, Traumatology, The Sixth People's Hospital Affiliated to Shanghai Jiaotong University Shanghai 200233, China
| | - Yaochi Wu
- Department of Acupuncture, Tuina, Traumatology, The Sixth People's Hospital Affiliated to Shanghai Jiaotong University Shanghai 200233, China
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Cheng L, Zhou S, Zhao Y, Sun Y, Xu Z, Yuan B, Chen X. Tanshinone IIA attenuates osteoclastogenesis in ovariectomized mice by inactivating NF-kB and Akt signaling pathways. Am J Transl Res 2018; 10:1457-1468. [PMID: 29887959 PMCID: PMC5992540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 04/06/2018] [Indexed: 06/08/2023]
Abstract
Osteoporosis is a common disease associated with age and menopausal status. Postmenopausal osteoporosis is the most common type of primary osteoporosis and is accompanied by increased risk of osteoporotic fracture. Natural and herbal compounds have long been used to prevent and treat many human diseases. Here, we demonstrated that tanshinone IIA prevented ovariectomy-induced bone loss in an in vivo mouse model that closely mimics osteoporosis. In addition, we found that tanshinone IIA inhibited the receptor activator of nuclear factor NF-κB ligand (RANKL)-induced osteoclast differentiation and osteoclastogenesis in vitro. Tanshinone IIA treatment also abrogated RANKL-induced activation of the NF-κB pathway, PI3-kinase/Akt signaling, and the mitogen-activated protein kinase (MAPK) pathways, including nuclear translocation of NF-κB p65 and phosphorylation of IκB, extracellular signal-regulated kinase (ERK), p38, and Akt. Inactivation of these pathways resulted in deceased expression of osteoclastogenesis-related markers. These results suggest that tanshinone IIA, a natural drug, has the potential to treat and prevent bone loss diseases, including postmenopausal osteoporosis.
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Affiliation(s)
- Li Cheng
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Military Medical UniversityShanghai 200003, China
- Department of Orthopaedics, Cixi People’s Hospital, Wenzhou Medical UniversityCixi 315300, Zhejiang, China
| | - Shengyuan Zhou
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Military Medical UniversityShanghai 200003, China
| | - Yin Zhao
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Military Medical UniversityShanghai 200003, China
| | - Yanqing Sun
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Military Medical UniversityShanghai 200003, China
| | - Zheng Xu
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Military Medical UniversityShanghai 200003, China
| | - Bo Yuan
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Military Medical UniversityShanghai 200003, China
| | - Xiongsheng Chen
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Military Medical UniversityShanghai 200003, China
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Heparin-based coacervate of bFGF facilitates peripheral nerve regeneration by inhibiting endoplasmic reticulum stress following sciatic nerve injury. Oncotarget 2018. [PMID: 28624802 PMCID: PMC5564628 DOI: 10.18632/oncotarget.18256] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Creating a microenvironment at the injury site that favors axonal regrowth and remyelinationis pivotal to the success of therapeutic reinnervation. The mature myelin sheath of the peripheral nervous system depends on active participation of Schwann cells to form new cytoskeletal components and tremendous amounts of relevant neurotrophic factors. In this study, we utilized a new biomaterial for growth factor delivery consisting of a biocompatible polycation, poly(ethylene argininylaspartatediglyceride) and heparin. It is capable of binding a variety of growth factors to deliver basic fibroblast growth factor (bFGF) through polyvalent ionic interactions for nerve repair. In vitro assays demonstrated that the bFGF loading efficiency reached 10 μg and this delivery vehicle could control the release of bFGF. In vivo, the coacervate enhanced bFGF bioavailability, which improved both motor and sensory function. It could also acceleratemyelinated fiber regeneration and remyelination and promote Schwann cells proliferation. Furthermore, the neuroprotective effect of bFGF-coacervate in sciatic nerve injury was associated with the alleviation of endoplasmic reticulum stress signal. This heparin-based delivery platform leads to increased bFGF loading efficiency and better controls its release, which will provide an effective strategy for peripheral nerve injury regeneration therapy.
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Wang P, Xie ZD, Xie CN, Lin CW, Wang JL, Xuan LN, Zhang CW, Wang Y, Huang ZH, Teng HL. AMP-activated protein kinase-dependent induction of autophagy by erythropoietin protects against spinal cord injury in rats. CNS Neurosci Ther 2018; 24:1185-1195. [PMID: 29656591 DOI: 10.1111/cns.12856] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 03/13/2018] [Accepted: 03/13/2018] [Indexed: 12/16/2022] Open
Abstract
AIMS Autophagy has been regarded as a promising therapeutic target for spinal cord injury (SCI). Erythropoietin (EPO) has been demonstrated to exhibit neuroprotective effects in the central nervous system (CNS); however, the molecular mechanisms of its protection against SCI remain unknown. This study aims to investigate whether the neuroprotective effects of EPO on SCI are mediated by autophagy via AMP-activated protein kinase (AMPK) signaling pathways. METHODS Functional assessment and Nissl staining were used to investigate the effects of EPO on SCI. Expressions of proteins were detected by Western blot and immunohistochemistry. RESULTS Treatment with EPO significantly reduced the loss of motor neurons and improved the functional recovery following SCI. Erythropoietin significantly enhanced the SCI-induced autophagy through activating AMPK and inactivating mTOR signaling. The inhibitor of AMPK, compound C, could block the EPO-induced autophagy and beneficial action on SCI, whereas the activator of AMPK, metformin, could mimic the effects of EPO. In the in vitro studies, EPO enhanced the hypoxia-induced autophagy in an AMPK-dependent manner. CONCLUSIONS The AMPK-dependent induction of autophagy contributes to the neuroprotection of EPO on SCI.
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Affiliation(s)
- Peng Wang
- Department of Spine Surgery, Wenzhou Medical University First Affiliated Hospital, Wenzhou, Zhejiang, China.,Department of Emergency Medicine, Wenzhou Medical University Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou, Zhejiang, China
| | - Zhong-Dong Xie
- Department of Gastrointestinal Surgery, Wenzhou Medical University First Affiliated Hospital, Wenzhou, Zhejiang, China
| | - Chang-Nan Xie
- Department of Spine Surgery, Wenzhou Medical University First Affiliated Hospital, Wenzhou, Zhejiang, China.,Institute of Neuroscience and Institute of Hypoxia Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chao-Wei Lin
- Department of Spine Surgery, Wenzhou Medical University First Affiliated Hospital, Wenzhou, Zhejiang, China
| | - Ji-Li Wang
- Department of Pathology, Zhejiang University First Affiliated Hospital, Hangzhou, Zhejiang, China
| | - Li-Na Xuan
- Institute of Neuroscience and Institute of Hypoxia Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chun-Wu Zhang
- Department of Spine Surgery, Wenzhou Medical University First Affiliated Hospital, Wenzhou, Zhejiang, China
| | - Yu Wang
- Department of Spine Surgery, Wenzhou Medical University First Affiliated Hospital, Wenzhou, Zhejiang, China
| | - Zhi-Hui Huang
- Institute of Neuroscience and Institute of Hypoxia Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hong-Lin Teng
- Department of Spine Surgery, Wenzhou Medical University First Affiliated Hospital, Wenzhou, Zhejiang, China
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Effects of Transplanted Heparin-Poloxamer Hydrogel Combining Dental Pulp Stem Cells and bFGF on Spinal Cord Injury Repair. Stem Cells Int 2018; 2018:2398521. [PMID: 29765407 PMCID: PMC5892218 DOI: 10.1155/2018/2398521] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 01/30/2018] [Indexed: 12/16/2022] Open
Abstract
Spinal cord injury (SCI) is one of serious traumatic diseases of the central nervous system and has no effective treatment because of its complicated pathophysiology. Tissue engineering strategy which contains scaffolds, cells, and growth factors can provide a promising treatment for SCI. Hydrogel that has 3D network structure and biomimetic microenvironment can support cellular growth and embed biological macromolecules for sustaining release. Dental pulp stem cells (DPSCs), derived from cranial neural crest, possess mesenchymal stem cell (MSC) characteristics and have an ability to provide neuroprotective and neurotrophic properties for SCI treatment. Basic fibroblast growth factor (bFGF) is able to promote cell survival and proliferation and also has beneficial effect on neural regeneration and functional recovery after SCI. Herein, a thermosensitive heparin-poloxamer (HP) hydrogel containing DPSCs and bFGF was prepared, and the effects of HP-bFGF-DPSCs on neuron restoration after SCI were evaluated by functional recovery tests, western blotting, magnetic resonance imaging (MRI), histology evaluation, and immunohistochemistry. The results suggested that transplanted HP hydrogel containing DPSCs and bFGF had a significant impact on spinal cord repair and regeneration and may provide a promising strategy for neuron repair, functional recovery, and tissue regeneration after SCI.
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Dou HC, Chen JY, Ran TF, Jiang WM. Panax quinquefolius saponin inhibits endoplasmic reticulum stress-mediated apoptosis and neurite injury and improves functional recovery in a rat spinal cord injury model. Biomed Pharmacother 2018; 102:212-220. [PMID: 29558718 DOI: 10.1016/j.biopha.2018.03.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/11/2018] [Accepted: 03/12/2018] [Indexed: 01/13/2023] Open
Abstract
The treatment goal in spinal cord injury (SCI) is to repair neurites and suppress cell apoptosis. Panax quinquefolius saponin (PQS) is the major active ingredient of American ginseng and has been demonstrated to have anti-inflammatory and anti-apoptotic roles in various diseases. However, the potential effect of PQS on the pathological process of acute SCI remains unknown. This work tested the effects of PQS on acute SCI and clarified its potential mechanisms. PQS treatment ameliorated the damage to spinal tissue and improved the functional recovery after SCI. PQS treatment inhibited endoplasmic reticulum (ER) stress and the associated apoptosis after acute SCI. PQS further abolished the triglyceride (TG)-induced ER stress and associated apoptosis in neuronal cultures. PQS appears to inhibit the ER-stress-induced neurite injury in PC12 cells. Our results suggest that PQS is a novel therapeutic agent for acute central nervous system injury.
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Affiliation(s)
- Hai-Cheng Dou
- Orthopedics Department, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Jun-Yu Chen
- Orthopedics Department, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Tang-Fei Ran
- Orthopedics Department, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Wei-Min Jiang
- Orthopedics Department, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China.
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bFGF plays a neuroprotective role by suppressing excessive autophagy and apoptosis after transient global cerebral ischemia in rats. Cell Death Dis 2018; 9:172. [PMID: 29416039 PMCID: PMC5833346 DOI: 10.1038/s41419-017-0229-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 11/20/2017] [Accepted: 12/14/2017] [Indexed: 12/31/2022]
Abstract
Transient global cerebral ischemia (tGCI) is a cerebrovascular disorder that can cause apoptotic neuronal damage and functional deficits. Basic fibroblast growth factor (bFGF) was reported to be highly expressed in the central nervous system (CNS) and to exert neuroprotective effects against different CNS diseases. However, the effects of bFGF on tGCI have not been studied intensively. This study was conducted to investigate the effect of bFGF and its underlying mechanism in an animal model of tGCI. After intracerebroventricular (i.c.v.) injection of bFGF, functional improvement was observed, and the number of viable neurons increased in the ischemia-vulnerable hippocampal CA1 region. Apoptosis was induced after tGCI and could be attenuated by bFGF treatment via inhibition of p53 mitochondrial translocation. In addition, autophagy was activated during this process, and bFGF could inhibit activation of autophagy through the mTOR pathway. Rapamycin, an activator of autophagy, was utilized to explore the relationship among bFGF, apoptosis, and autophagy. Apoptosis deteriorated after rapamycin treatment, which indicated that excessive autophagy could contribute to the apoptosis process. In conclusion, these results demonstrate that bFGF could exert neuroprotective effects in the hippocampal CA1 region by suppressing excessive autophagy via the mTOR pathway and inhibiting apoptosis by preventing p53 mitochondrial translocation. Furthermore, our results suggest that bFGF may be a promising therapeutic agent to for treating tGCI in response to major adverse events, including cardiac arrest, shock, extracorporeal circulation, traumatic hemorrhage, and asphyxiation.
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Liu X, Zhang Y, Yang Y, Lin J, Huo X, Du X, Botchway BOA, Fang M. Therapeutic Effect of Curcumin and Methylprednisolone in the Rat Spinal Cord Injury. Anat Rec (Hoboken) 2017; 301:686-696. [PMID: 29150987 DOI: 10.1002/ar.23729] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 05/11/2017] [Accepted: 06/07/2017] [Indexed: 12/14/2022]
Abstract
In addition to imperiling an individual's daily life, spinal cord injury (SCI), a catastrophic medical damage, can permanently impair an individual's body function. Methylprednisolone (MP), a medically accepted therapeutic drug for SCI, is highly controversial for the lack of consensus on its true therapeutic effect. In recent years, curcumin has served as a potential and novel therapeutic drug in SCI. Our study was intended to investigate the precise effect of MP and curcumin in SCI. We examined the function of MP and curcumin in a SCI model rat, both in vivo and in vitro, and found that there was a momentous improvement in Basso-Beattie-Bresnahan scores in the MP-treated group when compared with Cur-treated group within 14 days. Results obtained from the histological, immunohistochemistry and ultrastructural examinations evidenced the curative effect of MP was better than curcumin before Day 14. Nonetheless, there was a significant variation in the treatment effect between the MP-treated and Cur-treated groups after 14 days. The curcumin's effectiveness was more obvious than MP after 14 days following SCI. As such, we surmise that curcumin has a better therapeutic potential than MP with a prolong treatment time in the wake of SCI. Anat Rec, 301:686-696, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Xuehong Liu
- Department of Histology and Embryology, Shaoxing University School of Medicine, Shaoxing City, Zhejiang Province, China.,Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, China
| | - Yong Zhang
- Department of Histology and Embryology, Shaoxing University School of Medicine, Shaoxing City, Zhejiang Province, China
| | - Yang Yang
- Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, China
| | - Jingquan Lin
- Department of Histology and Embryology, Shaoxing University School of Medicine, Shaoxing City, Zhejiang Province, China
| | - Xue Huo
- Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoxue Du
- Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, China
| | - Benson O A Botchway
- Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, China
| | - Marong Fang
- Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, China
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