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Xiang M, Lai Y, Shen J, Wei B, Liu H, Huang W. Novel biomarkers associated with oxidative stress and immune infiltration in intervertebral disc degeneration based on bioinformatics approaches. Comput Biol Chem 2024; 112:108181. [PMID: 39182249 DOI: 10.1016/j.compbiolchem.2024.108181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 08/12/2024] [Accepted: 08/20/2024] [Indexed: 08/27/2024]
Abstract
BACKGROUND The etiology of intervertebral disc degeneration (IVDD), a prevalent degenerative disease in the elderly, remains to be fully elucidated. The objective of this study was to identify immune infiltration and oxidative stress (OS) biomarkers in IVDD, aiming to provide further insights into the intricate pathogenesis of IVDD. METHODS The Gene Expression microarrays were obtained from the Gene Expression Omnibus (GEO) database. We conducted enrichment analysis of Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) terms. Subsequently, the R language packages CIBERSORT, MCPcounter, and WGCNA were employed to compare immune infiltration levels between IVDD samples and control samples. A protein-protein interaction (PPI) network was constructed using the Search Tools for the Retrieval of Interacting Genes (STRING) database to identify significant gene clusters. To identify hub genes, we employed Cytoscape's Molecular Complex Detection (MCODE) plug-in. The mRNA levels of hub genes in the cell model were validated by qPCR, while Western blotting was used to validate their protein levels. RESULTS The GSE70362 dataset from the GEO database identified a total of 1799 genes that were differentially expressed. Among these, 43 genes were found to be differentially expressed and also associated with OS. The differentially expressed genes associated with OS and the immune-related module genes identified through WGCNA were further intersected, resulting in the identification of 10 key genes that were differentially expressed and played crucial roles in both immune response and OS. Subsequently, we validated four diagnostic markers (PPIA, MAP3K5, PXN, and JAK2) using the GSE122429 external dataset. In a cellular model of OS in NP cells, we have identified the upregulation of PPIA and PXN genes, which could serve as novel markers for IVDD. CONCLUSION The study successfully identified and validated differentially expressed genes associated with oxidative stress and immune infiltration in IVDD samples compared to normal ones. Notably, the newly discovered biomarkers PPIA and PXN have not been previously reported in IVDD-related research.
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Affiliation(s)
- Min Xiang
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, ZhanJiang 524001, China
| | - Yue Lai
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, ZhanJiang 524001, China
| | - Jianlin Shen
- Department of Orthopedics, Affiliated Hospital of Putian University, Putian, China; Central Laboratory, Affiliated Hospital of Putian University, Putian, China
| | - Bo Wei
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, ZhanJiang 524001, China
| | - Huan Liu
- Department of Orthopedics, Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, LuZhou 646000, China.
| | - Wenhua Huang
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, ZhanJiang 524001, China; Guangdong Engineering Research Center for Translation of Medical 3D Printing Application, Guangdong Provincial Key Laboratory of Medical Biomechanics, National Key Discipline of Human Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510000, China; Guangdong Medical Innovation Platform for Translation of 3D Printing Application, The third Affiliated Hospital of Southern Medical University, Guangzhou 510000, China.
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Coquelet P, Da Cal S, El Hage G, Tastet O, Balthazard R, Chaumont H, Yuh SJ, Shedid D, Arbour N. Specific plasma biomarker signatures associated with patients undergoing surgery for back pain. Spine J 2024:S1529-9430(24)00996-3. [PMID: 39276871 DOI: 10.1016/j.spinee.2024.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 08/02/2024] [Accepted: 09/01/2024] [Indexed: 09/17/2024]
Abstract
BACKGROUND CONTEXT Intervertebral disc degeneration (IDD) affects numerous people worldwide. The role of inflammation is increasingly recognized but remains incompletely resolved. Peripheral molecules could access neovascularized degenerated discs and contribute to the ongoing pathology. PURPOSE To assess a large array of plasma molecules in patients with IDD to identify biomarkers associated with specific spinal pathologies and prognostic biomarkers for the surgery outcome. DESIGN Prospective observational study combining clinical data and plasma measures. PATIENT SAMPLE Plasma samples were collected just before surgery. Extensive clinical data (age, sex, smoking status, Modic score, glomerular filtration rate, etc.) were extracted from clinical files from 83 patients with IDD undergoing spine surgery. OUTCOME MEASURES Recovery 2 months postsurgery as assessed by the treating neurosurgeon. METHODS Over 40 biological molecules were measured in patients' plasma using multiplex assays. Statistical analyses were performed to identify associations between biological and clinical characteristics (age, sex, Body Mass Index (BMI), smoking status, herniated disc, radiculopathy, myelopathy, stenosis, MODIC score, etc.) and plasma levels of biological molecules. RESULTS Plasma levels of Neurofilament Light chain (NfL) were significantly elevated in patients with myelopathy and spinal stenosis compared to herniated disc. Plasma levels of C- reactive protein (CRP), Neurofilament Light chain (NfL), and Serum Amyloid A (SAA) were negatively associated, while CCL22 levels were positively associated with an efficient recovery 2 months postsurgery. CONCLUSIONS Our results show that CRP and CCL22 plasma levels combined with the age of the IDD patient can predict the 2-month postsurgery recovery (Area Under the Curve [AUC]=0.883). Moreover, NfL could become a valuable monitoring tool for patients with spinal cord injuries.
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Affiliation(s)
- Perrine Coquelet
- Department of Neurosciences, Université de Montréal, Montréal, Quebec, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada
| | - Sandra Da Cal
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada
| | - Gilles El Hage
- Neurosurgery Service, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Quebec, Canada
| | - Olivier Tastet
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada
| | - Renaud Balthazard
- Department of Neurosciences, Université de Montréal, Montréal, Quebec, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada
| | - Hugo Chaumont
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada
| | - Sung-Joo Yuh
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada; Neurosurgery Service, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Quebec, Canada; Department of Surgery, Division of Neurosurgery, Université de Montréal, Montréal, Quebec, Canada
| | - Daniel Shedid
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada; Neurosurgery Service, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Quebec, Canada; Department of Surgery, Division of Neurosurgery, Université de Montréal, Montréal, Quebec, Canada
| | - Nathalie Arbour
- Department of Neurosciences, Université de Montréal, Montréal, Quebec, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada.
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Zheng C, Guo D, Zhang T, Hu W, Zhang B, Feng H, Gao Y, Yang G. HDAC/H3K27ac-mediated transcription of NDUFA3 exerts protective effects on high glucose-treated human nucleus pulposus cells through improving mitochondrial function. Sci Rep 2024; 14:21165. [PMID: 39256449 PMCID: PMC11387752 DOI: 10.1038/s41598-024-71810-8] [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: 01/09/2024] [Accepted: 08/30/2024] [Indexed: 09/12/2024] Open
Abstract
Diabetes mellitus (DM) is a well-documented risk factor of intervertebral disc degeneration (IVDD). The current study was aimed to clarify the effects and mechanisms of NADH: ubiquinone oxidoreductase subunit A3 (NDUFA3) in human nucleus pulposus cells (HNPCs) exposed to high glucose. NDUFA3 was overexpressed in HNPCs via lenti-virus transduction, which were co-treated with high glucose and rotenone (a mitochondrial complex I inhibitor) for 48 h. Cell activities were assessed for cell viability, cell apoptosis, reactive oxygen species (ROS) production, mitochondrial membrane potential (MMP) ratio, oxygen consumption rate (OCR) and mitochondrial complexes I activities. High glucose decreased cell viability, increased apoptotic cells, increased ROS production, decreased MMP levels and OCR values in HNPCs in a dose-dependent manner. Rotenone co-treatment augmented the high glucose-induced injuries on cell viability, apoptosis, ROS production and mitochondrial function. NDUFA3 overexpression counteracted the high glucose-induced injuries in HNPCs. HDAC/H3K27ac mechanism was involved in regulating NDUFA3 transcription. NDUFA3 knockdown decreased cell viability and increased apoptotic cells, which were reversed by ROS scavenger N-acetylcysteine. HDAC/H3K27ac-mediated transcription of NDUFA3 protects HNPCs against high glucose-induced injuries through suppressing cell apoptosis, eliminating ROS, improving mitochondrial function and oxidative phosphorylation. This study sheds light on candidate therapeutic targets and deepens the understanding of molecular mechanisms behind DM-induced IVDD.
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Affiliation(s)
- Cheng Zheng
- Department of Spinal and Spinal Surgery, Henan Key Laboratory for Intelligent Precision Orthopedic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No.7, Wei Wu Road, Jinshui District, Zhengzhou, 450003, China
- Xinxiang Medical University, 601 Jinsui Avenue, Hongqi District, Xinxiang City, Henan Province, Xinxiang, 453003, China
| | - Dongshuai Guo
- Department of Spinal and Spinal Surgery, Henan Key Laboratory for Intelligent Precision Orthopedic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No.7, Wei Wu Road, Jinshui District, Zhengzhou, 450003, China
| | - Tong Zhang
- Department of Spinal and Spinal Surgery, Henan Key Laboratory for Intelligent Precision Orthopedic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No.7, Wei Wu Road, Jinshui District, Zhengzhou, 450003, China
| | - Weiran Hu
- Department of Spinal and Spinal Surgery, Henan Key Laboratory for Intelligent Precision Orthopedic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No.7, Wei Wu Road, Jinshui District, Zhengzhou, 450003, China
| | - Bo Zhang
- Department of Spinal and Spinal Surgery, Henan Key Laboratory for Intelligent Precision Orthopedic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No.7, Wei Wu Road, Jinshui District, Zhengzhou, 450003, China
| | - Hang Feng
- Department of Spinal and Spinal Surgery, Henan Key Laboratory for Intelligent Precision Orthopedic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No.7, Wei Wu Road, Jinshui District, Zhengzhou, 450003, China
| | - Yanzheng Gao
- Department of Spinal and Spinal Surgery, Henan Key Laboratory for Intelligent Precision Orthopedic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No.7, Wei Wu Road, Jinshui District, Zhengzhou, 450003, China
| | - Guang Yang
- Department of Spinal and Spinal Surgery, Henan Key Laboratory for Intelligent Precision Orthopedic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No.7, Wei Wu Road, Jinshui District, Zhengzhou, 450003, China.
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Burt KG, Kim MKM, Viola DC, Abraham AC, Chahine NO. Nuclear factor κB overactivation in the intervertebral disc leads to macrophage recruitment and severe disc degeneration. SCIENCE ADVANCES 2024; 10:eadj3194. [PMID: 38848366 PMCID: PMC11160472 DOI: 10.1126/sciadv.adj3194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 05/04/2024] [Indexed: 06/09/2024]
Abstract
Persistent inflammation has been associated with severe disc degeneration (DD). This study investigated the effect of prolonged nuclear factor κB (NF-κB) activation in DD. Using an inducible mouse model, we genetically targeted cells expressing aggrecan, a primary component of the disc extra cellular matrix, for activation of the canonical NF-κB pathway. Prolonged NF-κB activation led to severe structural degeneration accompanied by increases in gene expression of inflammatory molecules (Il1b, Cox2, Il6, and Nos2), chemokines (Mcp1 and Mif), and catabolic enzymes (Mmp3, Mmp9, and Adamts4). Increased recruitment of proinflammatory (F4/80+,CD38+) and inflammatory resolving (F4/80+,CD206+) macrophages was observed within caudal discs. We found that the secretome of inflamed caudal disc cells increased macrophage migration and inflammatory activation. Lumbar discs did not exhibit phenotypic changes, suggestive of regional spinal differences in response to inflammatory genetic overactivation. Results suggest prolonged NF-κB activation can induce severe DD through increases in inflammatory cytokines, chemotactic proteins, catabolic enzymes, and the recruitment and activation of macrophage cell populations.
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Affiliation(s)
- Kevin G. Burt
- Department of Orthopedic Surgery, Columbia University, New York, NY, USA
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Min Kyu M. Kim
- Department of Orthopedic Surgery, Columbia University, New York, NY, USA
| | - Dan C. Viola
- Department of Orthopedic Surgery, Columbia University, New York, NY, USA
| | - Adam C. Abraham
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Nadeen O. Chahine
- Department of Orthopedic Surgery, Columbia University, New York, NY, USA
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
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Pasula MB, Sylvester PW, Briski KP. GLUT2 regulation of p38 MAPK isoform protein expression and p38 phosphorylation in male versus female rat hypothalamic primary astrocyte Cultures. IBRO Neurosci Rep 2024; 16:635-642. [PMID: 38832087 PMCID: PMC11144729 DOI: 10.1016/j.ibneur.2024.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/20/2024] [Accepted: 05/20/2024] [Indexed: 06/05/2024] Open
Abstract
Recent studies documented regulation of hypothalamic astrocyte mitogen-activated protein kinase (MAPK) pathways, including p38, by the plasma membrane glucose carrier/sensor glucose transporter-2 (GLUT2). Sex-specific GLUT2 control of p38 phosphorylation was observed, but effects on individual p38 family protein profiles were not investigated. Current research employed an established primary astrocyte culture model, gene knockdown tools, and selective primary antisera against p38-alpha, p38-beta, p38-gamma, and p38-delta isoforms to investigate whether GLUT2 governs expression of one or more of these variants in a glucose-dependent manner. Data show that GLUT2 inhibits baseline expression of each p38 protein in male cultures, yet stimulates p38-delta profiles without affecting other p38 proteins in female. Glucose starvation caused selective up-regulation of p38-delta profiles in male versus p38-alpha and -gamma proteins in female; these positive responses were amplified by GLUT2 siRNA pretreatment. GLUT2 opposes or enhances basal p38 phosphorylation in male versus female, respectively. GLUT2 siRNA pretreatment did not affect glucoprivic patterns of phospho-p38 protein expression in either sex. Outcomes document co-expression of the four principal p38 MAPK family proteins in hypothalamic astrocytes, and implicate GLUT2 in regulation of all (male) versus one (female) variant(s). Glucoprivation up-regulated expression of distinctive p38 isoforms in each sex; these stimulatory responses are evidently blunted by GLUT2. Glucoprivic-associated loss of GLUT2 gene silencing effects on p38 phosphorylation infers either that glucose status determines whether this sensor controls phosphorylation, or that decrements in screened glucose in each instance are of sufficient magnitude to abolish GLUT2 regulation of that function.
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Affiliation(s)
- Madhu Babu Pasula
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Paul W. Sylvester
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Karen P. Briski
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
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Chen E, Li M, Liao Z, Yao D, Li Y, Huang L. Phillyrin reduces ROS production to alleviate the progression of intervertebral disc degeneration by inhibiting NF-κB pathway. J Orthop Surg Res 2024; 19:308. [PMID: 38773639 PMCID: PMC11110443 DOI: 10.1186/s13018-024-04695-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/22/2024] [Indexed: 05/24/2024] Open
Abstract
BACKGROUND Intervertebral disc degeneration (IDD) is an increasingly important cause of low back pain (LBP) that results in substantial health and economic burdens. Inflammatory pathway activation and the production of reactive oxygen species (ROS) play vital roles in the progression of IDD. Several studies have suggested that phillyrin has a protective role and inhibits inflammation and the production of ROS. However, the role of phillyrin in IDD has not been confirmed. PURPOSE The purpose of this study was to investigate the role of phillyrin in IDD and its mechanisms. STUDY DESIGN To establish IDD models in vivo, ex-vivo, and in vitro to verify the function of phillyrin in IDD. METHOD The effects of phillyrin on extracellular matrix (ECM) degeneration, inflammation, and oxidation in nucleus pulposus (NP) cells were assessed using immunoblotting and immunofluorescence analysis. Additionally, the impact of phillyrin administration on acupuncture-mediated intervertebral disc degeneration (IDD) in rats was evaluated using various techniques such as MRI, HE staining, S-O staining, and immunohistochemistry (IHC). RESULT Pretreatment with phillyrin significantly inhibited the IL-1β-mediated reduction in the degeneration of ECM and apoptosis by alleviating activation of the NF-κB inflammatory pathway and the generation of ROS. In addition, in vivo and ex-vivo experiments verified the protective effect of phillyrin against IDD. CONCLUSION Phillyrin can attenuate the progression of IDD by reducing ROS production and activating inflammatory pathways.
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Affiliation(s)
- Enming Chen
- Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Ming Li
- Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Zhuangyao Liao
- Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Dengbo Yao
- Department of Orthopedics, the Eighth Affiliated Hospital of Sun Yat-sen University, Sun Yat- sen University, Shenzhen, China
| | - Yuxi Li
- Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Lin Huang
- Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou, 510120, China.
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Sutopo NC, Rahmawati L, Huang L, Kry M, Chhang P, Lee S, Lee BH, Cho JY. Anti-inflammatory, Antioxidative, and Moisturizing Effects of Oxyceros horridus Lour. Ethanol Extract in Human Keratinocytes via the p38 Signaling Pathway. Chem Biodivers 2024; 21:e202301791. [PMID: 38415391 DOI: 10.1002/cbdv.202301791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 02/22/2024] [Accepted: 02/27/2024] [Indexed: 02/29/2024]
Abstract
Skin is the largest and outermost organ in the human body; it serves as a vital defense mechanism against various external threats. Therefore, it is crucial to maintain its health through protection against harmful substances and adequate moisture levels. This study investigates the anti-inflammatory, antioxidant, and moisturizing properties of Oxyceros horridus Lour. (Oh-EE) in human keratinocytes. Oh-EE demonstrates potent antioxidant activity and effectively protects against oxidative stress induced by external stimuli such as UVB radiation and H2O2. Additionally, it exhibits significant anti-inflammatory effects proven by its ability to downregulate the expression of pro-inflammatory cytokines, namely COX-2 and IL-6. The study also explores the involvement of the AP-1 pathway, highlighting the ability of Oh-EE to suppress the expression of p38 and its upstream regulator, MKK3/6, under UVB-induced conditions. Interestingly, Oh-EE can activate the AP-1 pathway in the absence of external triggers. Furthermore, Oh-EE enhances skin moisture by upregulating the expression of key genes involved in skin hydration, namely HAS3 and FLG. These findings underscore the potential of Oh-EE as a versatile ingredient in skincare formulations, providing a range of skin benefits. Further research is warranted to comprehensively understand the underlying mechanisms through which Oh-EE exerts its effects.
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Affiliation(s)
| | - Laily Rahmawati
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Lei Huang
- Department of Biocosmetics, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Masphal Kry
- Forestry Administration, Ministry of Agriculture Forestry and Fisheries, #40 Norodom Blvd, Daun Penh, Phnom Penh, Cambodia
| | - Phourin Chhang
- Forestry Administration, Ministry of Agriculture Forestry and Fisheries, #40 Norodom Blvd, Daun Penh, Phnom Penh, Cambodia
| | - Sarah Lee
- Strategic Planning Division, National Institute of Biological Resources, Incheon, 22689, Republic of Korea
| | - Byoung-Hee Lee
- Biological Resources Assessment Division, National Institute of Biological Resources, Incheon, 22689, Republic of Korea
| | - Jae Youl Cho
- Department of Biocosmetics, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Republic of Korea
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Chen Y, Lu M, Lin M, Gao Q. Network pharmacology and molecular docking to elucidate the common mechanism of hydroxychloroquine treatment in lupus nephritis and IgA nephropathy. Lupus 2024; 33:347-356. [PMID: 38285068 DOI: 10.1177/09612033241230377] [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: 01/30/2024]
Abstract
OBJECTIVE Hydroxychloroquine (HCQ), characterized by a broad effect on immune regulation, has been widely used in the treatment of autoimmune glomerulonephritis such as lupus nephritis (LN) and immunoglobulin A nephropathy (IgAN). The current research investigates whether HCQ plays a role in the treatment of LN and IgAN through common mechanisms since the pathogenesis of both LN and IgAN is closely related to immune complex deposition, complement activation, and ultimately inflammation. METHODS Seventy-two common targets were obtained related to the common mechanism of HCQ treatment of LN and IgAN. Targets associated with LN and IgAN were collected based on DisGeNET, GeneCards, and OMIM databases. Possible HCQ targets were obtained from the PubChem database and PharmMapper databases. The overlapping targets of HCQ ingredients, IgAN, and LN were discovered via the Venn 2.1.0 online platform. Through the DAVID database, the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were conducted. Cytoscape (v3.9.1) was used to build a protein-protein interaction (PPI) network. Molecular docking was performed by using AutoDockTools 1.5.6 software and PyMol software to match the binding activity between HCQ and the 10 core targets. RESULTS The results showed that core targets (including MMP 2, PPARG, IL-2, MAPK14, MMP 9, and SRC), three signaling pathways (including the PI3K-Akt, AGE-RAGE, and MAPK), and cell differentiation (including Th1, Th2, and Th17) might be related to the body's immunity and inflammation. These results suggested that HCQ might act on targets and pathways involved in inflammation and immune regulation to exert a common effect on the treatment of LN and IgAN. CONCLUSIONS The current study provided new evidence for the protective mechanism and clinical utility of HCQ against LN and IgAN.
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Affiliation(s)
- Yixuan Chen
- The School of Clinical Medicine, Fujian Medical University, Fuzhou, China
| | - Meiqi Lu
- Department of Nephrology, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Mengshu Lin
- The School of Clinical Medicine, Fujian Medical University, Fuzhou, China
| | - Qing Gao
- The School of Clinical Medicine, Fujian Medical University, Fuzhou, China
- Department of Nephrology, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
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Li L, Zhang G, Yang Z, Kang X. Stress-Activated Protein Kinases in Intervertebral Disc Degeneration: Unraveling the Impact of JNK and p38 MAPK. Biomolecules 2024; 14:393. [PMID: 38672411 PMCID: PMC11047866 DOI: 10.3390/biom14040393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/28/2024] Open
Abstract
Intervertebral disc degeneration (IDD) is a major cause of lower back pain. The pathophysiological development of IDD is closely related to the stimulation of various stressors, including proinflammatory cytokines, abnormal mechanical stress, oxidative stress, metabolic abnormalities, and DNA damage, among others. These factors prevent normal intervertebral disc (IVD) development, reduce the number of IVD cells, and induce senescence and apoptosis. Stress-activated protein kinases (SAPKs), particularly, c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (p38 MAPK), control cell signaling in response to cellular stress. Previous studies have shown that these proteins are highly expressed in degenerated IVD tissues and are involved in complex biological signal-regulated processes. Therefore, we summarize the research reports on IDD related to JNK and p38 MAPK. Their structure, function, and signal regulation mechanisms are comprehensively and systematically described and potential therapeutic targets are proposed. This work could provide a reference for future research and help improve molecular therapeutic strategies for IDD.
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Affiliation(s)
- Lei Li
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, China; (L.L.); (G.Z.); (Z.Y.)
- The Second Clinical Medical College, Lanzhou University, Lanzhou 730030, China
- Key Laboratory of Orthopedics Disease of Gansu Province, Lanzhou University Second Hospital, Lanzhou 730030, China
- The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou 730030, China
| | - Guangzhi Zhang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, China; (L.L.); (G.Z.); (Z.Y.)
- The Second Clinical Medical College, Lanzhou University, Lanzhou 730030, China
- Key Laboratory of Orthopedics Disease of Gansu Province, Lanzhou University Second Hospital, Lanzhou 730030, China
- The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou 730030, China
| | - Zhili Yang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, China; (L.L.); (G.Z.); (Z.Y.)
- The Second Clinical Medical College, Lanzhou University, Lanzhou 730030, China
- Key Laboratory of Orthopedics Disease of Gansu Province, Lanzhou University Second Hospital, Lanzhou 730030, China
- The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou 730030, China
| | - Xuewen Kang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, China; (L.L.); (G.Z.); (Z.Y.)
- The Second Clinical Medical College, Lanzhou University, Lanzhou 730030, China
- Key Laboratory of Orthopedics Disease of Gansu Province, Lanzhou University Second Hospital, Lanzhou 730030, China
- The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou 730030, China
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Zhang X, Zhang Z, Zou X, Wang Y, Qi J, Han S, Xin J, Zheng Z, Wei L, Zhang T, Zhang S. Unraveling the mechanisms of intervertebral disc degeneration: an exploration of the p38 MAPK signaling pathway. Front Cell Dev Biol 2024; 11:1324561. [PMID: 38313000 PMCID: PMC10834758 DOI: 10.3389/fcell.2023.1324561] [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: 10/19/2023] [Accepted: 12/28/2023] [Indexed: 02/06/2024] Open
Abstract
Intervertebral disc (IVD) degeneration (IDD) is a worldwide spinal degenerative disease. Low back pain (LBP) is frequently caused by a variety of conditions brought on by IDD, including IVD herniation and spinal stenosis, etc. These conditions bring substantial physical and psychological pressure and economic burden to patients. IDD is closely tied with the structural or functional changes of the IVD tissue and can be caused by various complex factors like senescence, genetics, and trauma. The IVD dysfunction and structural changes can result from extracellular matrix (ECM) degradation, differentiation, inflammation, oxidative stress, mechanical stress, and senescence of IVD cells. At present, the treatment of IDD is basically to alleviate the symptoms, but not from the pathophysiological changes of IVD. Interestingly, the p38 mitogen-activated protein kinase (p38 MAPK) signaling pathway is involved in many processes of IDD, including inflammation, ECM degradation, apoptosis, senescence, proliferation, oxidative stress, and autophagy. These activities in degenerated IVD tissue are closely relevant to the development trend of IDD. Hence, the p38 MAPK signaling pathway may be a fitting curative target for IDD. In order to better understand the pathophysiological alterations of the intervertebral disc tissue during IDD and offer potential paths for targeted treatments for intervertebral disc degeneration, this article reviews the purpose of the p38 MAPK signaling pathway in IDD.
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Affiliation(s)
- Xingmin Zhang
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Zilin Zhang
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Xiaosong Zou
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Yongjie Wang
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Jinwei Qi
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Song Han
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Jingguo Xin
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Zhi Zheng
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Lin Wei
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Tianhui Zhang
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
| | - Shaokun Zhang
- Department of Spine Surgery, Center of Orthopedics, First Hospital of Jilin University, Changchun, China
- Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
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11
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Deng YJ, Wang XG, Li Z, Wang B, Li J, Ma J, Xue X, Tian X, Liu QC, Liu JY, Zhang Y, Yuan B. Comprehensive analysis of senescence-related genes and immune infiltration in intervertebral disc degeneration: a meta-data approach utilizing bulk and single-cell RNA sequencing data. Front Mol Biosci 2023; 10:1296782. [PMID: 38187091 PMCID: PMC10770860 DOI: 10.3389/fmolb.2023.1296782] [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: 09/19/2023] [Accepted: 12/13/2023] [Indexed: 01/09/2024] Open
Abstract
Objectives: This study aims to identify the key senescence genes and potential regulatory mechanisms that contribute to the etiology of intervertebral disc degeneration (IDD). Method: We analyzed GSE34095 and GSE70362 datasets, identifying key senescence-related differentially expressed genes (DEGs) in IDD using lasso regression. Risk scores classified patients into high- and low-risk groups. We compared pathways, functions, and immune infiltration between these groups. Diagnostic ability was assessed using ROC curves and a nomogram predicted IDD incidence. In single-cell dataset GSE165722, we evaluated expression of key senescence-related DEGs. Results: We identified 12 key senescence-related DEGs distinguishing high- and low-risk IDD patients. Enrichment analysis revealed cellular stress response, apoptotic signaling pathway, and protein kinase activation differences. Immune cell analysis showed elevated eosinophils in low-risk group and increased effector memory CD8 T, central memory CD4 T, myeloid-derived suppressor, natural killer, monocyte, Type 1 T helper, plasmacytoid dendritic, and natural killer T cells in high-risk group. A nomogram using AUC >0.75 genes (CXCL8, MAP4K4, MINK1, and TNIK) predicted IDD incidence with good diagnostic power. High senescence scores were observed in neutrophils. Conclusion: Our diagnostic model, based on key senescence-related DEGs and immune cell infiltration, offers new insights into IDD pathogenesis and immunotherapy strategies.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Bin Yuan
- Department of Spine Surgery, Xi’an Daxing Hospital, Yanan University, Xi’an, China
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12
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Xu H, Li J, Fei Q, Jiang L. Contribution of immune cells to intervertebral disc degeneration and the potential of immunotherapy. Connect Tissue Res 2023; 64:413-427. [PMID: 37161923 DOI: 10.1080/03008207.2023.2212051] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/11/2023]
Abstract
Substantial evidence supports that chronic low back pain is associated with intervertebral disc degeneration (IDD), which is accompanied by decreased cell activity and matrix degradation. The role of immune cells, especially macrophages, in a variety of diseases has been extensively studied; therefore, their role in IDD has naturally attracted widespread scholarly interest. The IVD is considered to be an immunologically-privileged site given the presence of physical and biological barriers that include an avascular microenvironment, a high proteoglycan concentration, high physical pressure, the presence of apoptosis inducers such as Fas ligand, and the presence of notochordal cells. However, during IDD, immune cells with distinct characteristics appear in the IVD. Some of these immune cells release factors that promote the inflammatory response and angiogenesis in the disc and are, therefore, important drivers of IDD. Although some studies have elucidated the role of immune cells, no specific strategies related to systemic immunotherapy have been proposed. Herein, we summarize current knowledge of the presence and role of immune cells in IDD and consider that immunotherapy targeting immune cells may be a novel strategy for alleviating IDD symptoms.
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Affiliation(s)
- Hao Xu
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Juan Li
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qinming Fei
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Libo Jiang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Xiamen, Fujian Province, China
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Burt KG, Kim MKM, Viola DC, Abraham AC, Chahine NO. Nuclear Factor Kappa B Over-Activation in the Intervertebral Disc Leads to Macrophage Recruitment and Severe Disc Degeneration. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.07.552274. [PMID: 37609194 PMCID: PMC10441339 DOI: 10.1101/2023.08.07.552274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Objective Low back pain (LBP) is the leading cause of global disability and is thought to be driven primarily by intervertebral disc (IVD) degeneration (DD). Persistent upregulation of catabolic enzymes and inflammatory mediators have been associated with severe cases of DD. Nuclear factor kappa B (NF-κB) is a master transcription regulator of immune responses and is over expressed during inflammatory-driven musculoskeletal diseases, including DD. However, its role in triggering DD is unknown. Therefore, this study investigated the effect of NF-κB pathway over-activation on IVD integrity and DD pathology. Methods Using skeletally mature mouse model, we genetically targeted IVD cells for canonical NF-κB pathway activation via expression of a constitutively active form of inhibitor of κB kinase B (IKKβ), and assessed changes in IVD cellularity, structural integrity including histology, disc height, and extracellular matrix (ECM) biochemistry, biomechanics, expression of inflammatory, catabolic, and neurotropic mediators, and changes in macrophage subsets, longitudinally up to 6-months post activation. Results Prolonged NF-κB activation led to severe structural degeneration, with a loss of glycosaminoglycan (GAG) content and complete loss of nucleus pulposus (NP) cellularity. Structural and compositional changes decreased IVD height and compressive mechanical properties with prolonged NF-κB activation. These alterations were accompanied by increases in gene expression of inflammatory molecules ( Il1b, Il6, Nos2 ), chemokines ( Mcp1 , Mif ), catabolic enzymes ( Mmp3, Mmp9, Adamts4 ), and neurotrophic factors ( Bdnf , Ngf ) within IVD tissue. Increased recruitment of activated F4/80 + macrophages exhibited a greater abundance of pro-inflammatory (CD38 + ) over inflammatory-resolving (CD206 + ) macrophage subsets in the IVD, with temporal changes in the relative abundance of macrophage subsets over time, providing evidence for temporal regulation of macrophage polarization in DD in vivo, where macrophages participate in resolving the inflammatory cascade but promote fibrotic transformation of the IVD matrix. We further show that NF-κB driven secretory factors from IVD cells increase macrophage migration and inflammatory activation, and that the secretome of inflammatory-resolving macrophages mitigates effects of NF-κB overactivation. Conclusion Overall the observed results suggest prolonged NF-κB activation can induce severe DD, acting through increases in inflammatory cytokines, chemotactic proteins, catabolic enzymes, and the recruitment and inflammatory activation of a macrophage cell populations, that can be mitigated with inflammatory-resolving macrophage secretome.
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Dou X, Ma Y, Luo Q, Song C, Liu M, Liu X, Jia D, Li S, Liu X. Therapeutic potential of melatonin in the intervertebral disc degeneration through inhibiting the ferroptosis of nucleus pulpous cells. J Cell Mol Med 2023; 27:2340-2353. [PMID: 37329158 PMCID: PMC10424295 DOI: 10.1111/jcmm.17818] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/28/2023] [Accepted: 06/12/2023] [Indexed: 06/18/2023] Open
Abstract
Ferroptosis, a novel type of cell death mediated by the iron-dependent lipid peroxidation, contributes to the pathogenesis of the intervertebral disc degeneration (IDD). Increasing evidence demonstrated that melatonin (MLT) displayed the therapeutic potential to prevent the development of IDD. Current mechanistic study aims to explore whether the downregulation of ferroptosis contributes to the therapeutic capability of MLT in IDD. Current studies demonstrated that conditioned medium (CM) from the lipopolysaccharide (LPS)-stimulated macrophages caused a series of changes about IDD, including increased intracellular oxidative stress (increased reactive oxygen species and malondialdehyde levels, but decreased glutathione levels), upregulated expression of inflammation-associated factors (IL-1β, COX-2 and iNOS), increased expression of key matrix catabolic molecules (MMP-13, ADAMTS4 and ADAMTS5), reduced the expression of major matrix anabolic molecules (COL2A1 and ACAN), and increased ferroptosis (downregulated GPX4 and SLC7A11 levels, but upregulated ACSL4 and LPCAT3 levels) in nucleus pulposus (NP) cells. MLT could alleviate CM-induced NP cell injury in a dose-dependent manner. Moreover, the data substantiated that intercellular iron overload was involved in CM-induced ferroptosis in NP cells, and MLT treatment alleviated intercellular iron overload and protected NP cells against ferroptosis, and those protective effects of MLT in NP cells further attenuated with erastin and enhanced with ferrostatin-1(Fer-1). This study demonstrated that CM from the LPS-stimulated RAW264.7 macrophages promoted the NP cell injury. MLT alleviated the CM-induced NP cell injury partly through inhibiting ferroptosis. The findings support the role of ferroptosis in the pathogenesis of IDD, and suggest that MLT may serve as a potential therapeutic approach for clinical treatment of IDD.
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Affiliation(s)
- Xinyu Dou
- Department of OrthopaedicsPeking University Third HospitalBeijingChina
- Beijing Key Laboratory of Spinal Disease ResearchBeijingChina
- Engineering Research Center of Bone and Joint Precision MedicineMinistry of EducationBeijingChina
| | - Yunlong Ma
- Pain Medical CenterPeking University Third HospitalBeijingChina
| | - Qipeng Luo
- Pain Medical CenterPeking University Third HospitalBeijingChina
| | - Chunyu Song
- Department of AnesthesiologyPeking University Third HospitalBeijingChina
| | - Meijuan Liu
- Department of Endocrinology, Genetics and MetabolismBeijing Children's HospitalBeijingChina
| | - Xiao Liu
- Department of OrthopaedicsPeking University Third HospitalBeijingChina
- Beijing Key Laboratory of Spinal Disease ResearchBeijingChina
- Engineering Research Center of Bone and Joint Precision MedicineMinistry of EducationBeijingChina
| | - Donglin Jia
- Pain Medical CenterPeking University Third HospitalBeijingChina
| | - Shuiqing Li
- Pain Medical CenterPeking University Third HospitalBeijingChina
| | - Xiaoguang Liu
- Department of OrthopaedicsPeking University Third HospitalBeijingChina
- Beijing Key Laboratory of Spinal Disease ResearchBeijingChina
- Engineering Research Center of Bone and Joint Precision MedicineMinistry of EducationBeijingChina
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15
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Fernández-Aroca D, García-Flores N, Frost S, Jiménez-Suárez J, Rodríguez-González A, Fernández-Aroca P, Sabater S, Andrés I, Garnés-García C, Belandia B, Cimas F, Villar D, Ruiz-Hidalgo M, Sánchez-Prieto R. MAPK11 (p38β) is a major determinant of cellular radiosensitivity by controlling ionizing radiation-associated senescence: An in vitro study. Clin Transl Radiat Oncol 2023; 41:100649. [PMID: 37346275 PMCID: PMC10279794 DOI: 10.1016/j.ctro.2023.100649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/23/2023] Open
Abstract
Background and purpose MAPKs are among the most relevant signalling pathways involved in coordinating cell responses to different stimuli. This group includes p38MAPKs, constituted by 4 different proteins with a high sequence homology: MAPK14 (p38α), MAPK11 (p38β), MAPK12 (p38γ) and MAPK13 (p38δ). Despite their high similarity, each member shows unique expression patterns and even exclusive functions. Thus, analysing protein-specific functions of MAPK members is necessary to unequivocally uncover the roles of this signalling pathway. Here, we investigate the possible role of MAPK11 in the cell response to ionizing radiation (IR). Materials and methods We developed MAPK11/14 knockdown through shRNA and CRISPR interference gene perturbation approaches and analysed the downstream effects on cell responses to ionizing radiation in A549, HCT-116 and MCF-7 cancer cell lines. Specifically, we assessed IR toxicity by clonogenic assays; DNA damage response activity by immunocytochemistry; apoptosis and cell cycle by flow cytometry (Annexin V and propidium iodide, respectively); DNA repair by comet assay; and senescence induction by both X-Gal staining and gene expression of senescence-associated genes by RT-qPCR. Results Our findings demonstrate a critical role of MAPK11 in the cellular response to IR by controlling the associated senescent phenotype, and without observable effects on DNA damage response, apoptosis, cell cycle or DNA damage repair. Conclusion Our results highlight MAPK11 as a novel mediator of the cellular response to ionizing radiation through the control exerted onto IR-associated senescence.
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Affiliation(s)
- D.M. Fernández-Aroca
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - N. García-Flores
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - S. Frost
- Centre for Genomics and Child Health, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - J. Jiménez-Suárez
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - A. Rodríguez-González
- Centre for Genomics and Child Health, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - P. Fernández-Aroca
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - S. Sabater
- Servicio de Oncología Radioterápica, Complejo Hospitalario Universitario de Albacete, Albacete, España
| | - I. Andrés
- Servicio de Oncología Radioterápica, Complejo Hospitalario Universitario de Albacete, Albacete, España
| | - C. Garnés-García
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - B. Belandia
- Departamento de Biología del Cáncer, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM). Madrid, España. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, España
| | - F.J. Cimas
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
- Área de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, España
| | - D. Villar
- Centre for Genomics and Child Health, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - M.J. Ruiz-Hidalgo
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
- Área de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, España
| | - R. Sánchez-Prieto
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
- Departamento de Biología del Cáncer, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM). Madrid, España. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, España
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Gao XW, Hu HL, Xie MH, Tang CX, Ou J, Lu ZH. CX3CL1/CX3CR1 axis alleviates inflammation and apoptosis in human nucleus pulpous cells via M2 macrophage polarization. Exp Ther Med 2023; 26:359. [PMID: 37324510 PMCID: PMC10265713 DOI: 10.3892/etm.2023.12058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 04/06/2023] [Indexed: 06/17/2023] Open
Abstract
CX3C chemokine ligand 1 (CX3CL1) belongs to the CX3C chemokine family and is involved in various disease processes. However, its role in intervertebral disc degeneration (IDD) remains to be elucidated. In the present study, western blotting, reverse transcription-quantitative PCR and ELISA assays were used to assess target gene expression. In addition, immunofluorescence and TUNEL staining were used to assess macrophage infiltration, monocyte migration and apoptosis. The present study aimed to reveal if and how CX3CL1 regulates IDD progression by exploring its effect on macrophage polarization and apoptosis of human nucleus pulposus cells (HNPCs). The data showed that CX3CL1 bound to CX3C motif chemokine receptor 1 (CX3CR1) promoted the M2 phenotype polarization via JAK2/STAT3 signaling, followed by increasing the secretion of anti-inflammatory cytokines from HNPCs. In addition, HNPC-derived CX3CL1 promoted M2 macrophage-derived C-C motif chemokine ligand 17 release thereby reducing the apoptosis of HNPCs. In clinic, the reduction of mRNA and protein levels CX3CL1 in degenerative nucleus pulposus tissues (NPs) was measured. Increased M1 macrophages and pro-inflammatory cytokines were found in NPs of IDD patients with low CX3CL1 expression. Collectively, these findings suggested that the CX3CL1/CX3CR1 axis alleviates IDD by reducing inflammation and apoptosis of HNPCs via macrophages. Therefore, targeting CX3CL1/CX3CR1 axis is expected to produce a new therapeutic approach for IDD.
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Affiliation(s)
- Xiao-Wen Gao
- The Department of Spinal Surgery, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Han-Lin Hu
- The Department of Spinal Surgery, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Ming-Hua Xie
- The Department of Spinal Surgery, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Cai-Xia Tang
- The Department of Obstetrics and Gynecology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Jun Ou
- The Department of Spinal Surgery, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Zheng-Hao Lu
- The Department of Spinal Surgery, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
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17
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Li X, Luo S, Fan W, Jiang C, Wang W, Chen J, Chen Y, Zhang Z, Qiu Z, Tan D, Huang C, Wang M, Bai X. Influence of macrophage polarization in herniated nucleus pulposus tissue on clinical efficacy after lumbar discectomy. JOR Spine 2023; 6:e1249. [PMID: 37361327 PMCID: PMC10285759 DOI: 10.1002/jsp2.1249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 01/10/2023] [Accepted: 01/15/2023] [Indexed: 01/27/2023] Open
Abstract
Background Low back pain or sciatic pain because of lumbar intervertebral disc herniation (LDH) is caused by mechanical compression and/or an inflammatory component on the nerve root. However, it is difficult to define to what extent each component contributes to the pain. This study attempted to explore the effects of macrophage polarization on clinical symptoms in patients experiencing LDH after surgery, and investigated the association between macrophage cell percentages and clinical efficacy. Methods This study retrospectively harvested nucleus pulposus (NP) tissue samples from 117 patients. Clinical symptoms and efficacy using the visual analog scale (VAS) and Oswestry Disability Index (ODI) were evaluated at different time points preoperatively and postoperatively. CD68, CCR7, CD163, and CD206 were selected as macrophage phenotypic markers. Results Seventy-six samples showed positive expression of macrophage markers in NP samples of patients with LDH, whereas 41 patients displayed negative results. No significant differences were detected between the two groups, involvement of several demographic data, and preoperative clinical findings. With respect to the macrophage-positive group, no significant correlation was detected between the positive rate of the four markers and the VAS score or ODI after surgery. However, patients with NP samples positive for CD68 and CCR7 expression showed significantly lower VAS scores 1 week after surgery compared with those in the negative group. Moreover, the improvement in VAS score showed a strong positive correlation with CD68- and CCR7-positive cell percentages. Conclusions Our results indicated that pro-inflammatory M1 macrophages may be associated with the reduction of chronic pain after surgery. Therefore, these findings contribute to better personalized pharmacological interventions for patients with LDH, considering the heterogeneity of pain.
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Affiliation(s)
- Xiao‐Chuan Li
- Department of Cell Biology, School of Basic Medical SciencesSouthern Medical UniversityGuangzhouGuangdongChina
- Postdoctoral Innovation Practice Base of Gaozhou People's HospitalMaomingGuangdongChina
- Department of Orthopaedic Surgery, Gaozhou People's HospitalMaomingGuangdongChina
| | - Shao‐Jian Luo
- Department of Orthopaedic Surgery, Gaozhou People's HospitalMaomingGuangdongChina
| | - Wu Fan
- Department of Orthopaedic Surgery, Gaozhou People's HospitalMaomingGuangdongChina
| | - Cheng Jiang
- Graduate School of Guangdong Medical UniversityZhanjiangGuangdongChina
| | - Wei Wang
- Graduate School of Guangdong Medical UniversityZhanjiangGuangdongChina
| | - Jiong‐Hui Chen
- Graduate School of Guangdong Medical UniversityZhanjiangGuangdongChina
| | - Yong‐Long Chen
- Graduate School of Guangdong Medical UniversityZhanjiangGuangdongChina
| | - Zhen‐Wu Zhang
- Graduate School of Guangdong Medical UniversityZhanjiangGuangdongChina
| | - Zhen‐Hua Qiu
- Postdoctoral Innovation Practice Base of Gaozhou People's HospitalMaomingGuangdongChina
| | - Dan‐Qin Tan
- Department of Orthopaedic Surgery, Gaozhou People's HospitalMaomingGuangdongChina
| | - Chun‐Ming Huang
- Postdoctoral Innovation Practice Base of Gaozhou People's HospitalMaomingGuangdongChina
- Department of Orthopaedic Surgery, Gaozhou People's HospitalMaomingGuangdongChina
| | - Mao‐Sheng Wang
- Postdoctoral Innovation Practice Base of Gaozhou People's HospitalMaomingGuangdongChina
| | - Xiao‐Chun Bai
- Department of Cell Biology, School of Basic Medical SciencesSouthern Medical UniversityGuangzhouGuangdongChina
- Postdoctoral Innovation Practice Base of Gaozhou People's HospitalMaomingGuangdongChina
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Awasthi A, Rahman MA, Bhagavan Raju M. Synthesis, In Silico Studies, and In Vitro Anti-Inflammatory Activity of Novel Imidazole Derivatives Targeting p38 MAP Kinase. ACS OMEGA 2023; 8:17788-17799. [PMID: 37251188 PMCID: PMC10210024 DOI: 10.1021/acsomega.3c00605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 04/26/2023] [Indexed: 05/31/2023]
Abstract
A series of eight novel N-substituted [4-(trifluoro methyl)-1H-imidazole-1-yl] amide derivatives (AA1-AA8) were synthesized, characterized, and evaluated for their in vitro p38 MAP kinase anti-inflammatory inhibitory activity. The synthesized compounds were obtained by coupling [4-(trifluoromethyl)-1H-imidazole-1-yl] acetic acid with 2-amino-N-(Substituted)-3-phenylpropanamide derivatives utilizing 1-[bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b] pyridinium 3-oxide hexafluorophosphate as a coupling agent. Various spectroscopic methods established and confirmed their structures, specifically, 1H NMR, 13C NMR, Fourier transform infrared (FTIR), and mass spectrometry. In order to emphasize the binding site of the p38 MAP kinase protein and newly synthesized compounds, molecular docking studies were carried out. In the series, compound AA6 had the highest docking score of 7.83 kcal/mol. The ADME studies were performed using web software. Studies revealed that all the synthesized compounds were orally active and showed good gastrointestinal absorption within the acceptable range. Lipinski's "rule of five" was used to determine drug-likeness. The synthesized compounds were screened for their anti-inflammatory activity by performing an albumin denaturation assay in which five compounds (AA2, AA3, AA4, AA5, and AA6) were found to exhibit substantial activity. Hence, these were further selected and proceeded for the evaluation of p38 MAP kinase inhibitory activity. The compound AA6 possesses considerable p38 kinase inhibitory anti-inflammatory activity with an IC50 value of 403.57 ± 6.35 nM compared to the prototype drug adezmapimod (SB203580) with an IC50 value of 222.44 ± 5.98 nM. Some further structural modifications in compound AA6 could contribute to the development of new p38 MAP kinase inhibitors with an improved IC50 value.
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Affiliation(s)
- Archana Awasthi
- Department
of Pharmaceutical Chemistry, Sri Venkateshwara
College of Pharmacy, Madhapur, Hyderabad 500081, Telangana, India
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Integral University, Lucknow, Uttar Pradesh 226026, India
| | - Md Azizur Rahman
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Integral University, Lucknow, Uttar Pradesh 226026, India
| | - Mantripragada Bhagavan Raju
- Department
of Pharmaceutical Chemistry, Sri Venkateshwara
College of Pharmacy, Madhapur, Hyderabad 500081, Telangana, India
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19
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Grangeat AM, Erario MDLA. The Use of Medical Ozone in Chronic Intervertebral Disc Degeneration Can Be an Etiological and Conservative Treatment. Int J Mol Sci 2023; 24:ijms24076538. [PMID: 37047511 PMCID: PMC10095297 DOI: 10.3390/ijms24076538] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/22/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Degeneration of the intervertebral disc is one of the most frequent causes of lumbar pain, and it puts an extreme strain on worldwide healthcare systems. Finding a solution for this disease is an important challenge as current surgical and conservative treatments fail to bring a short-term or long-term solution to the problem. Medical ozone has yielded excellent results in intervertebral disc pathology. When it comes to extruded disc herniation, ozone is the only etiological treatment because it stimulates the immune system to absorb the herniated portion of the nucleus pulposus, thus resolving discal extrusion. This work aims to examine the biomolecular mechanisms that lead to intervertebral disc degeneration while highlighting the significance of oxidative stress and chronic inflammation. Considering that ozone is a regulator of oxidative stress and, therefore, of inflammation, we assert that medical ozone could modulate this process and obtain inflammatory stage macrophages (M1) to switch to the repair phase (M2). Consequently, the ozone would be a therapeutic resource that would work on the etiology of the disease as an epigenetic regulator that would help repair the intervertebral space.
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20
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Wang K, Yao D, Li Y, Li M, Zeng W, Liao Z, Chen E, Lu S, Su K, Che Z, Liang Y, Wang P, Huang L. TAK-715 alleviated IL-1β-induced apoptosis and ECM degradation in nucleus pulposus cells and attenuated intervertebral disc degeneration ex vivo and in vivo. Arthritis Res Ther 2023; 25:45. [PMID: 36945021 PMCID: PMC10029231 DOI: 10.1186/s13075-023-03028-4] [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: 09/09/2022] [Accepted: 03/08/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND Intervertebral disc degeneration (IDD) is one of the most common disorders related to the spine. Inflammation, apoptosis and extracellular matrix (ECM) degradation contribute to disc degeneration in nucleus pulposus cells (NPCs). This study focused on the role and mechanism of the p38 inhibitor TAK-715 in intervertebral disc degeneration. METHODS NPCs were treated with IL-1β to mimic apoptosis, followed by the addition of TAK-715. It was determined that apoptosis, inflammatory mediators (COX-2), inflammatory cytokines (HMGB1), and ECM components (collagen II, MMP9, ADAMTS5, and MMP3) existed in NPCs. In addition, the p38MAPK signaling pathways were examined. The role of TAK-715 in vivo was determined by acupuncture-induced intervertebral disc degeneration. Following an intradiscal injection of TAK-715, MRI and a histopathological analysis were conducted to assess the degree of degeneration. RESULTS IL-1β-induced apoptosis was alleviated by TAK-715 in vitro, and antiapoptotic proteins were upregulated. Furthermore, TAK-715 blocked IL-1β-induced inflammatory mediator production (COX-2) and inflammatory cytokine production (HMGB1) and degraded the ECM (collagen II, MMP9, ADAMTS5, and MMP3). By inhibiting the phosphorylation of p38, TAK-715 exerted its effects. In a rat tail model, TAK-715 ameliorates puncture-induced disc degeneration based on MRI and histopathology evaluations. CONCLUSION TAK-715 attenuated intervertebral disc degeneration in vitro and in vivo, suggesting that it might be an effective treatment for IDD.
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Affiliation(s)
- Kun Wang
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
- Department of Orthopedics, Eighth Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, 3025 Shennan Middle Road, Shenzhen, 518033, China
| | - Dengbo Yao
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
- Department of Orthopedics, Eighth Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, 3025 Shennan Middle Road, Shenzhen, 518033, China
| | - Yuxi Li
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Ming Li
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Weike Zeng
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Zhuangyao Liao
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Engming Chen
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Shixin Lu
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Kaihui Su
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Zhen Che
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Yuwei Liang
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China
| | - Peng Wang
- Department of Orthopedics, Eighth Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, 3025 Shennan Middle Road, Shenzhen, 518033, China.
| | - Lin Huang
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, China.
- Department of Orthopedics, Nangchang First Hospital, Nanchang, China.
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21
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Shi ZW, Zhu L, Song ZR, Liu TJ, Hao DJ. Roles of p38 MAPK signalling in intervertebral disc degeneration. Cell Prolif 2023:e13438. [PMID: 36872558 PMCID: PMC10392072 DOI: 10.1111/cpr.13438] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/05/2023] [Accepted: 02/20/2023] [Indexed: 03/07/2023] Open
Abstract
Intervertebral disc degeneration (IVDD) is a common degenerative disease mediated by multiple factors. Because of its complex aetiology and pathology, no specific molecular mechanisms have yet been identified and no definitive treatments are currently available for IVDD. p38 mitogen-activated protein kinase (MAPK) signalling, part of the serine and threonine (Ser/Thr) protein kinases family, is associated with the progression of IVDD, by mediating the inflammatory response, increasing extracellular matrix (ECM) degradation, promoting cell apoptosis and senescence and suppressing cell proliferation and autophagy. Meanwhile, the inhibition of p38 MAPK signalling has a significant effect on IVDD treatment. In this review, we first summarize the regulation of p38 MAPK signalling and then highlight the changes in the expression of p38 MAPK signalling and their impact on pathological process of IVDD. Moreover, we discuss the current applications and future prospects of p38 MAPK as a therapeutic target for IVDD treatment.
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Affiliation(s)
- Zheng-Wei Shi
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Lei Zhu
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Zong-Rang Song
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Tuan-Jiang Liu
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Ding-Jun Hao
- Department of Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
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22
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Ahmad H, Zia B, Husain H, Husain A. Recent Advances in PROTAC-Based Antiviral Strategies. Vaccines (Basel) 2023; 11:270. [PMID: 36851148 PMCID: PMC9958553 DOI: 10.3390/vaccines11020270] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/15/2023] [Accepted: 01/20/2023] [Indexed: 02/03/2023] Open
Abstract
Numerous mysteries of cell and molecular biology have been resolved through extensive research into intracellular processes, which has also resulted in the development of innovative technologies for the treatment of infectious and non-infectious diseases. Some of the deadliest diseases, accounting for a staggering number of deaths, have been caused by viruses. Conventional antiviral therapies have been unable to achieve a feat in combating viral infections. As a result, the healthcare system has come under tremendous pressure globally. Therefore, there is an urgent need to discover and develop newer therapeutic approaches against viruses. One such innovative approach that has recently garnered attention in the research world and can be exploited for developing antiviral therapeutic strategies is the PROteolysis TArgeting Chimeras (PROTAC) technology, in which heterobifunctional compounds are employed for the selective degradation of target proteins by the intracellular protein degradation machinery. This review covers the most recent advancements in PROTAC technology, its diversity and mode of action, and how it can be applied to open up new possibilities for creating cutting-edge antiviral treatments and vaccines.
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Affiliation(s)
- Haleema Ahmad
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - Bushra Zia
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - Hashir Husain
- Department of Biosciences, Faculty of Science, Integral University, Lucknow 226026, India
| | - Afzal Husain
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
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23
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Xia Y, Wang H, Yang R, Hou Y, Li Y, Zhu J, Fu C. Biomaterials delivery strategies to repair degenerated intervertebral discs by regulating the inflammatory microenvironment. Front Immunol 2023; 14:1051606. [PMID: 36756124 PMCID: PMC9900107 DOI: 10.3389/fimmu.2023.1051606] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 01/03/2023] [Indexed: 01/24/2023] Open
Abstract
Intervertebral disc degeneration (IVDD) is one of the leading causes of lower back pain. Although IVDD cannot directly cause death, it can cause pain, psychological burdens, and economic burdens to patients. Current conservative treatments for IVDD can relieve pain but cannot reverse the disease. Patients who cannot tolerate pain usually resort to a strategy of surgical resection of the degenerated disc. However, the surgical removal of IVDD can affect the stability of adjacent discs. Furthermore, the probability of the reherniation of the intervertebral disc (IVD) after surgery is as high as 21.2%. Strategies based on tissue engineering to deliver stem cells for the regeneration of nucleus purposes (NP) and annulus fibrosus (AF) have been extensively studied. The developed biomaterials not only locally withstand the pressure of the IVD but also lay the foundation for the survival of stem cells. However, the structure of IVDs does not provide sufficient nutrients for delivered stem cells. The role of immune mechanisms in IVDD has recently become clear. In IVDD, the IVD that was originally in immune privilege prevents the attack of immune cells (mainly effector T cells and macrophages) and aggravates the disease. Immune regulatory and inflammatory factors released by effector T cells, macrophages, and the IVD further aggravate IVDD. Reversing IVDD by regulating the inflammatory microenvironment is a potential approach for the treatment of the disease. However, the biological factors modulating the inflammatory microenvironment easily degrade in vivo. It makes it possible for different biomaterials to modulate the inflammatory microenvironment to repair IVDD. In this review, we have discussed the structures of IVDs and the immune mechanisms underlying IVDD. We have described the immune mechanisms elicited by different biological factors, including tumor necrosis factors, interleukins, transforming growth factors, hypoxia-inducible factors, and reactive oxygen species in IVDs. Finally, we have discussed the biomaterials used to modulate the inflammatory microenvironment to repair IVDD and their development.
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Affiliation(s)
- Yuanliang Xia
- Department of Spine Surgery, The First Hospital of Jilin University, Changchun, China
| | - Hengyi Wang
- Department of Spine Surgery, The First Hospital of Jilin University, Changchun, China
| | - Ruohan Yang
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - Yulin Hou
- Department of Cardiology, Guangyuan Central Hospital, Guangyuan, China
| | - Yuehong Li
- Department of Spine Surgery, The First Hospital of Jilin University, Changchun, China
| | - Jianshu Zhu
- Department of Spine Surgery, The First Hospital of Jilin University, Changchun, China
| | - Changfeng Fu
- Department of Spine Surgery, The First Hospital of Jilin University, Changchun, China,*Correspondence: Changfeng Fu,
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24
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Macrophages and Intervertebral Disc Degeneration. Int J Mol Sci 2023; 24:ijms24021367. [PMID: 36674887 PMCID: PMC9863885 DOI: 10.3390/ijms24021367] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/14/2022] [Accepted: 01/05/2023] [Indexed: 01/13/2023] Open
Abstract
The intervertebral disc (IVD) aids in motion and acts to absorb energy transmitted to the spine. With little inherent regenerative capacity, degeneration of the intervertebral disc results in intervertebral disc disease, which contributes to low back pain and significant disability in many individuals. Increasing evidence suggests that IVD degeneration is a disease of the whole joint that is associated with significant inflammation. Moreover, studies show elevated macrophage accumulation within the IVD with increasing levels of disease severity; however, we still need to understand the roles, be they causative or consequential, of macrophages during the degenerative process. In this narrative review, we discuss hallmarks of IVD degeneration, showcase evidence of macrophage involvement during disc degeneration, and explore burgeoning research aimed at understanding the molecular pathways regulating macrophage functions during intervertebral disc degeneration.
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25
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Feng P, Che Y, Gao C, Zhu L, Gao J, Vo NV. Immune exposure: how macrophages interact with the nucleus pulposus. Front Immunol 2023; 14:1155746. [PMID: 37122738 PMCID: PMC10140429 DOI: 10.3389/fimmu.2023.1155746] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/31/2023] [Indexed: 05/02/2023] Open
Abstract
Intervertebral disc degeneration (IDD) is a primary contributor to low back pain. Immune cells play an extremely important role in modulating the progression of IDD by interacting with disc nucleus pulposus (NP) cells and extracellular matrix (ECM). Encased within the annulus fibrosus, healthy NP is an avascular and immune-privileged tissue that does not normally interact with macrophages. However, under pathological conditions in which neovascularization is established in the damaged disc, NP establishes extensive crosstalk with macrophages, leading to different outcomes depending on the different microenvironmental stimuli. M1 macrophages are a class of immune cells that are predominantly pro-inflammatory and promote inflammation and ECM degradation in the NP, creating a vicious cycle of matrix catabolism that drives IDD. In contrast, NP cells interacting with M2 macrophages promote disc tissue ECM remodeling and repair as M2 macrophages are primarily involved in anti-inflammatory cellular responses. Hence, depending on the crosstalk between NP and the type of immune cells (M1 vs. M2), the overall effects on IDD could be detrimental or regenerative. Drug or surgical treatment of IDD can modulate this crosstalk and hence the different treatment outcomes. This review comprehensively summarizes the interaction between macrophages and NP, aiming to highlight the important role of immunology in disc degeneration.
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Affiliation(s)
- Peng Feng
- School of Medicine, China Academy of Chinese Medical Sciences, Beijing, China
- Department of Spine, Wangjing Hospital Affiliated to China Academy of Chinese Medical Sciences, Beijing, China
| | - Ying Che
- School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chunyu Gao
- Department of Spine, Wangjing Hospital Affiliated to China Academy of Chinese Medical Sciences, Beijing, China
| | - Liguo Zhu
- Department of Spine, Wangjing Hospital Affiliated to China Academy of Chinese Medical Sciences, Beijing, China
- Beijing Key Laboratory of Bone Setting Technology of Traditional Chinese Medicine, Wangjing Hospital Affiliated to China Academy of Chinese Medical Sciences, Beijing, China
| | - Jinghua Gao
- Department of Spine, Wangjing Hospital Affiliated to China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Jinghua Gao, ; Nam V. Vo,
| | - Nam V. Vo
- Ferguson Laboratory for Orthopedic and Spine Research, Department of Orthopedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States
- *Correspondence: Jinghua Gao, ; Nam V. Vo,
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26
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Decreasing effects of protein kinase inhibitors on the expression of NOS2 and inflammatory cytokines and on phagocytosis in rat peritoneal macrophages is partly related to repolarization. Mol Immunol 2023; 153:10-24. [PMID: 36402067 DOI: 10.1016/j.molimm.2022.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/18/2022] [Accepted: 11/02/2022] [Indexed: 11/18/2022]
Abstract
The JAK/STAT (Janus Kinase/Signal Transducer and Activator of Transcription) pathway plays a pivotal role in macrophage polarization, but other signaling routes may also be involved. The aim of this study was to reveal the relationship of activation between rat peritoneal macrophages and their polarization, to detect the signaling routes involved, and find selective protein kinase inhibitors decreasing the production of inflammatory proteins in activated peritoneal macrophages. Rat macrophages were elicited with i.p. casein injection. CD80 and CD206 markers, NOS2 (Nitric oxide synthase 2), arginase, cytokines and phagocytosis were investigated by ELISA (Enzyme Linked Immunosorbent Assay), Western Blot, fluorescent microscopic and flow cytometry. Statistical methods were ANOVA (Analysis Of Variance) and Student t-tests. Resident and elicited cells expressed both CD80 and CD206 polarization markers. The involvement of MAPK (mitogen-activated protein kinases) and JAK/STAT pathways in the polarization was evidenced by a phosphorylation array, supported by Western blotting, by cytokine markers and by the inhibitory effects of kinase inhibitors. The expression of NOS2 and inflammatory cytokines was higher in elicited cells suggesting their M1 polarization. This effect was reduced by the inhibitors of MAPK and JAK/STAT pathways. Phagocytosis was also higher in elicited macrophages and decreased by these inhibitors. Nevertheless, they cannot change macrophage polarization unambiguously, as levels of CD80 and CD206 markers were not changed. For comparison, human blood macrophages were also studied. Similar effects and several differences were observed between the two types of macrophages, suggesting the role of the previous differentiation in defining their characteristics. Selected anti-cancer protein kinase inhibitors of p38, MAPK and JAK/STAT pathways are possible candidates for the therapy of inflammatory diseases.
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27
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Li XC, Luo SJ, Wu F, Mu QC, Yang JH, Jiang C, Wang W, Zhou TL, Qin TD, Tan RX, Jian-Li, Huang CM, Wang MS, Bai XC. Investigation of macrophage polarization in herniated nucleus pulposus of patients with lumbar intervertebral disc herniation. J Orthop Res 2022; 41:1335-1347. [PMID: 36370141 DOI: 10.1002/jor.25480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/13/2022] [Accepted: 11/07/2022] [Indexed: 11/15/2022]
Abstract
Macrophage infiltration and polarization during lumbar intervertebral disc herniation (LDH) have attracted increased attention but their role remains unclear. To explore macrophage polarization in herniated nucleus pulposus (NP) tissue of patients with LDH and investigate the association between cell frequency and different clinical characteristics or symptoms, we conducted a retrospective study by analyzing NP tissue samples from 79 patients. Clinical features and symptoms, using the visual analog scale (VAS) and Oswestry disability index (ODI), were collected. The macrophage markers CD68, CCR7, CD163, and CD206; pro-inflammatory cytokine TNF-α; and anti-inflammatory factor IL-4 were analyzed by immunohistochemistry. The frequency of polarized macrophages and positivity rate of pro- and anti-inflammatory cytokines showed significant differences in some of clinical characteristics. Specifically, higher CCR7+ and TNF-α + proportions were identified in the high-intensity zone (HIZ) and the type of extrusion and sequestration NP tissue than in non-HIZ and protrude NP tissue. Higher CD206+ and IL-4+ proportion were detected in Modic changes. However, no differences in gender, age, smoking status, Pfirrmann grade, analgesic use, leg pain duration, and segments were found between groups. CD68+ , CCR7+ , and CD206+ cell proportions, and TNF-α and IL-4 showed positive associations with VAS scores preoperation. Associations between ODI and the macrophages markers were weak/insignificant. Our results indicated that macrophage polarization or macrophage-like cells contribute to LDH pathological features. Macrophage populations displaying significant associations with VAS score reflected continuous M1/M2 transition contributing to pain during LDH. These findings may contribute to enhanced/personalized pharmacological interventions for patients with LDH considering pain heterogeneity.
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Affiliation(s)
- Xiao-Chuan Li
- Department of Cell Biology, Southern Medical University, Guangzhou, China.,Department of Orthopaedic Surgery, Gaozhou People's Hospital, Zhanjiang, China
| | - Shao-Jian Luo
- Department of Orthopaedic Surgery, Gaozhou People's Hospital, Zhanjiang, China
| | - Fan Wu
- Department of Orthopaedic Surgery, Gaozhou People's Hospital, Zhanjiang, China
| | - Qing-Chun Mu
- Postdoctoral Innovation Practice Base of Gaozhou People's Hospital, Maoming, China.,Department of Neurosurgery, Gaozhou People's Hospital, Maoming, China
| | - Jun-Hui Yang
- Graduate School of Guangdong Medical University, Zhanjiang, China
| | - Cheng Jiang
- Graduate School of Guangdong Medical University, Zhanjiang, China
| | - Wei Wang
- Graduate School of Guangdong Medical University, Zhanjiang, China
| | - Tian-Li Zhou
- Department of Orthopaedic Surgery, Gaozhou People's Hospital, Zhanjiang, China
| | - Tan-Dan Qin
- Department of Orthopaedic Surgery, Gaozhou People's Hospital, Zhanjiang, China
| | - Rong-Xiong Tan
- Department of Orthopaedic Surgery, Gaozhou People's Hospital, Zhanjiang, China
| | - Jian-Li
- Department of Orthopaedic Surgery, Gaozhou People's Hospital, Zhanjiang, China
| | - Chun-Ming Huang
- Department of Orthopaedic Surgery, Gaozhou People's Hospital, Zhanjiang, China.,Postdoctoral Innovation Practice Base of Gaozhou People's Hospital, Maoming, China
| | - Mao-Sheng Wang
- Postdoctoral Innovation Practice Base of Gaozhou People's Hospital, Maoming, China
| | - Xiao-Chun Bai
- Department of Cell Biology, Southern Medical University, Guangzhou, China.,Postdoctoral Innovation Practice Base of Gaozhou People's Hospital, Maoming, China
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28
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Li XC, Luo SJ, Fan W, Zhou TL, Huang CM, Wang MS. M2 macrophage-conditioned medium inhibits intervertebral disc degeneration in a tumor necrosis factor-α-rich environment. J Orthop Res 2022; 40:2488-2501. [PMID: 35170802 DOI: 10.1002/jor.25292] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 01/26/2022] [Accepted: 02/02/2022] [Indexed: 02/04/2023]
Abstract
Inflammation is the primary pathological phenomenon associated with disc degeneration; the inflammatory cytokine tumor necrosis factor (TNF-α) plays a crucial role in this pathology. The anti-inflammatory and regenerative effects of M2 macrophages on nucleus pulposus cells (NPCs) in intervertebral disc degeneration (IDD) progression remain unknown. Here, M2 conditioned medium (M2CM) was harvested and purified from human acute monocytic leukaemia cell line (THP-1) cells and mouse peritoneal macrophages, respectively; it was used for culturing human NPCs and a mouse intervertebral disc (IVD) organ culture model. NPCs and IVD organ models were divided into three groups: group 1 treated with 10% fetal bovine serum (control); group 2 treated with 10 ng/ml TNF-α; and group 3 treated with 10 ng/ml TNF-α and M2CM (coculture group). After 2-14 days, cell proliferation, extracellular matrix synthesis, apoptosis, and NPC senescence were assessed. Cell proliferation was reduced in TNF-α-treated NPCs and inhibited in the M2CM co-culture treatment. Moreover, TNF-α treatment enhanced apoptosis, senescence, and expression of inflammatory factor-related genes, including interleukin-6, MMP-13, ADAMTS-4, and ADAMTS-5, whereas M2CM coculture significantly reversed these effects. In addition, co-culture with M2CM promoted aggrecan and collagen II synthesis, but reduced collagen Iα1 levels in TNF-α treatment groups. Using our established three-dimensional murine IVD organ culture model, we show that M2CM suppressed the inhibitory effect of TNF-α-rich environment. Therefore, co-culture with M2CM promotes cell proliferation and extracellular matrix synthesis and inhibits inflammation, apoptosis, and NPC senescence. This study highlights the therapeutic potential of M2CM for IDD.
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Affiliation(s)
- Xiao-Chuan Li
- Postdoctoral Innovation Practice Base of Gaozhou People's Hospital, Gaozhou People's Hospital, Maoming, Guangdong, China.,Department of Cell Biology, Southern Medical University, Guangzhou, China.,Department of Orthopedic Surgery, Gaozhou People's Hospital, Maoming, Guangdong, China
| | - Shao-Jian Luo
- Department of Orthopedic Surgery, Gaozhou People's Hospital, Maoming, Guangdong, China
| | - Wu Fan
- Department of Orthopedic Surgery, Gaozhou People's Hospital, Maoming, Guangdong, China
| | - Tian-Li Zhou
- Department of Orthopedic Surgery, Gaozhou People's Hospital, Maoming, Guangdong, China
| | - Chun-Ming Huang
- Postdoctoral Innovation Practice Base of Gaozhou People's Hospital, Gaozhou People's Hospital, Maoming, Guangdong, China.,Department of Orthopedic Surgery, Gaozhou People's Hospital, Maoming, Guangdong, China
| | - Mao-Sheng Wang
- Postdoctoral Innovation Practice Base of Gaozhou People's Hospital, Gaozhou People's Hospital, Maoming, Guangdong, China.,Department of Cell Biology, Southern Medical University, Guangzhou, China
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29
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Hou X, Shen Y, Sun M, Zhang B, Dai J, Chen D, Liu Z. Effect of regulating macrophage polarization phenotype on intervertebral disc degeneration. Immun Inflamm Dis 2022; 10:e714. [PMID: 36301028 PMCID: PMC9609449 DOI: 10.1002/iid3.714] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/07/2022] Open
Abstract
Background Macrophages are the only inflammatory cells that can penetrate the closed nucleus pulposus and their polarization plays an important role in intervertebral disc degeneration (IVDD). This paper attempted to investigate the pathogenesis of IVDD by altering the polarization state of macrophages. Methods Macrophage RAW264.7 cells were induced by interferonγ (IFN‐γ) and lipopolysaccharide (LPS). The polarization of RAW264.7 cells was estimated by western blot and immunofluorescence. The expressions of inflammatory factors were detected by ELISA. Subsequently, RAW264.7 cells were treated with different concentrations of minocycline (Mino) and sinomenine (Sino), followed by the assessment of cell viability with cell counting kit‐8 kit. Then, RAW264.7 cell culture medium was collected for the culture of human nucleus pulposus cells (NPCs). Toluidine blue staining and type II collagen staining were applied to assay the level of type II collagen. The cell apoptosis, oxidative stress, and nitric oxide (NO) level were appraised by TUNEL, oxidative stress kits and NO kit, respectively. Western blot was employed to test the levels of apoptosis‐ and oxidative stress‐related proteins. Results IFN‐γ and LPS could induce M1 polarization of RAW264.7 cells. Mino and Sino could reduce the polarization of RAW264.7 cells toward M1. M1‐polarized medium inhibited LPS‐induced activity, inflammation, and damage of NPCs, which were enhanced by Mino and Sino in medium. Conclusion M1 polarization of macrophages promoted LPS‐induced inflammation and damage of NPCs.
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Affiliation(s)
- Xuefeng Hou
- Department of OrthopedicsBinhai County People's HospitalJiangsu ProvinceChina
| | - Yucheng Shen
- Department of OrthopedicsBinhai County People's HospitalJiangsu ProvinceChina
| | - Minli Sun
- Department of GeriatricsBinhai County People's HospitalBinhaiJiangsu ProvinceChina
| | - Bing Zhang
- Department of OrthopedicsBinhai County People's HospitalJiangsu ProvinceChina
| | - Jiuming Dai
- Department of OrthopedicsBinhai County People's HospitalJiangsu ProvinceChina
| | - Dong Chen
- Department of OrthopedicsBinhai County People's HospitalJiangsu ProvinceChina
| | - Zhidong Liu
- Department of OrthopedicsBinhai County People's HospitalJiangsu ProvinceChina
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Kim TW, Kim AG, Lee KH, Hwang MH, Choi H. Microfluidic Electroceuticals Platform for Therapeutic Strategies of Intervertebral Disc Degeneration: Effects of Electrical Stimulation on Human Nucleus Pulposus Cells under Inflammatory Conditions. Int J Mol Sci 2022; 23:10122. [PMID: 36077518 PMCID: PMC9456475 DOI: 10.3390/ijms231710122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 11/26/2022] Open
Abstract
The degeneration of an intervertebral disc (IVD) is a major cause of lower back pain. IVD degeneration is characterized by the abnormal expression of inflammatory cytokines and matrix degradation enzymes secreted by IVD cells. In addition, macrophage-mediated inflammation is strongly associated with IVD degeneration. However, the precise pathomechanisms of macrophage-mediated inflammation in IVD are still unknown. In this study, we developed a microfluidic platform integrated with an electrical stimulation (ES) array to investigate macrophage-mediated inflammation in human nucleus pulposus (NP). This platform provides multiple cocultures of different cell types with ES. We observed macrophage-mediated inflammation and considerable migration properties via upregulated expression of interleukin (IL)-6 (p < 0.001), IL-8 (p < 0.05), matrix metalloproteinase (MMP)-1 (p < 0.05), and MMP-3 (p < 0.05) in human NP cells cocultured with macrophages. We also confirmed the inhibitory effects of ES at 10 μA due to the production of IL-6 (p < 0.05) and IL-8 (p < 0.01) under these conditions. Our findings indicate that ES positively affects degenerative inflammation in diverse diseases. Accordingly, the microfluidic electroceutical platform can serve as a degenerative IVD inflammation in vitro model and provide a therapeutic strategy for electroceuticals.
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Affiliation(s)
- Tae-Won Kim
- Department of Medical Sciences, Graduate School of Medicine, Korea University, 148, Gurodong-ro, Guro-gu, Seoul 08308, Korea
| | - An-Gi Kim
- Department of Medical Sciences, Graduate School of Medicine, Korea University, 148, Gurodong-ro, Guro-gu, Seoul 08308, Korea
| | - Kwang-Ho Lee
- Division of Mechanical and Biomedical Mechatronics, and Materials Science and Engineering, College of and Engineering, Kangwon National University, 1, Kangwondaehak-gil, Chuncheon-si 24341, Korea
| | - Min-Ho Hwang
- Department of Medical Sciences, Graduate School of Medicine, Korea University, 148, Gurodong-ro, Guro-gu, Seoul 08308, Korea
| | - Hyuk Choi
- Department of Medical Sciences, Graduate School of Medicine, Korea University, 148, Gurodong-ro, Guro-gu, Seoul 08308, Korea
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Li XC, Luo SJ, Fan W, Zhou TL, Tan DQ, Tan RX, Xian QZ, Li J, Huang CM, Wang MS. Macrophage polarization regulates intervertebral disc degeneration by modulating cell proliferation, inflammation mediator secretion, and extracellular matrix metabolism. Front Immunol 2022; 13:922173. [PMID: 36059551 PMCID: PMC9433570 DOI: 10.3389/fimmu.2022.922173] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 07/29/2022] [Indexed: 01/17/2023] Open
Abstract
Macrophage infiltration and polarization have been increasingly observed in intervertebral disc (IVD) degeneration (IDD). However, their biological roles in IDD are still unrevealed. We harvested conditioned media (CM) derived from a spectrum of macrophages induced from THP-1 cells, and examined how they affect nucleus pulposus cells (NPCs) in vitro, by studying cell proliferation, extracellular matrix (ECM) synthesis, and pro-inflammation expression; and in vivo by injection CM in a rat IDD model. Then, high-throughput sequencing was used to detect differentially expressed genes (DEGs). Gene Ontology (GO), the Kyoto Encyclopedia of Genes and Genomes (KEGG), and protein-protein interaction (PPI) networks were used to further analysis. Higher CCR7+ (M1 marker) and CD206+ (M2 marker) cell counts were found in the degenerated human IVD tissues as compared with the control. Furthermore, the cell co-culture model showed M1CM attenuated NPC proliferation, downregulated the expression of ECM anabolic genes encoding aggrecan and collagen IIα1, upregulated the expression of ECM catabolic genes encoding MMP-13, and inflammation-related genes encoding IL-1β, IL-6, and IL-12, while M2CM showed contrasting trends. In IDD model, higher histological scores and lower disc height index were found following M1CM treatment, while M2CM exhibited opposite results. M1CM injection decreased ECM anabolic and increased ECM catabolic, as well as the upregulation of inflammation-related genes after 8 weeks treatment, while M2CM slowed down these trends. Finally, a total of 637 upregulated and 655 downregulated genes were detected in M1CM treated NPCs, and 975 upregulated genes and 930 downregulated genes in the M2CM groups. The top 30 GO terms were shown and the most significant KEGG pathway was cell cycle in both groups. Based on the PPI analysis, the five most significant hub genes were PLK1, KIF20A, RRM2, CDC20, and UBE2C in the M1CM groups and RRM2, CCNB1, CDC20, PLK1, and UBE2C in the M2CM groups. In conclusion, macrophage polarization exhibited diverse roles in IDD progression, with M1CM exacerbating cell proliferation suppression and IVD degeneration, while M2CM attenuated IDD development. These findings may facilitate the further elucidation of the role of macrophage polarization in IDD, and provide novel insights into the therapeutic potential of macrophages.
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Affiliation(s)
- Xiao-Chuan Li
- Postdoctoral Innovation Practice Base of Gaozhou People’s Hospital, Gaozhou, China
- Department of Orthopedic Surgery, Gaozhou People’s Hospital, Gaozhou, China
- Central Laboratory of Orthopedics, Gaozhou People’s Hospital, Gaozhou, China
| | - Shao-Jian Luo
- Department of Orthopedic Surgery, Gaozhou People’s Hospital, Gaozhou, China
- Central Laboratory of Orthopedics, Gaozhou People’s Hospital, Gaozhou, China
| | - Wu Fan
- Department of Orthopedic Surgery, Gaozhou People’s Hospital, Gaozhou, China
| | - Tian-Li Zhou
- Central Laboratory of Orthopedics, Gaozhou People’s Hospital, Gaozhou, China
| | - Dan-Qin Tan
- Central Laboratory of Orthopedics, Gaozhou People’s Hospital, Gaozhou, China
| | - Rong-Xiong Tan
- Department of Orthopedic Surgery, Gaozhou People’s Hospital, Gaozhou, China
- Central Laboratory of Orthopedics, Gaozhou People’s Hospital, Gaozhou, China
| | - Qun-Ze Xian
- Department of Orthopedic Surgery, Gaozhou People’s Hospital, Gaozhou, China
- Central Laboratory of Orthopedics, Gaozhou People’s Hospital, Gaozhou, China
| | - Jian Li
- Department of Orthopedic Surgery, Gaozhou People’s Hospital, Gaozhou, China
- Central Laboratory of Orthopedics, Gaozhou People’s Hospital, Gaozhou, China
| | - Chun-Ming Huang
- Postdoctoral Innovation Practice Base of Gaozhou People’s Hospital, Gaozhou, China
- Department of Orthopedic Surgery, Gaozhou People’s Hospital, Gaozhou, China
- Central Laboratory of Orthopedics, Gaozhou People’s Hospital, Gaozhou, China
| | - Mao-Sheng Wang
- Postdoctoral Innovation Practice Base of Gaozhou People’s Hospital, Gaozhou, China
- *Correspondence: Mao-Sheng Wang,
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Yu B, Zhu Z, Hu T, Lu J, Shen B, Wu T, Guo K, Chaudhary SK, Feng H, Zhao W, Wu D. Construction of a circular RNA-based competing endogenous RNA network to screen biomarkers related to intervertebral disc degeneration. BMC Musculoskelet Disord 2022; 23:675. [PMID: 35840955 PMCID: PMC9284696 DOI: 10.1186/s12891-022-05579-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 06/06/2022] [Indexed: 12/03/2022] Open
Abstract
Background Intervertebral disc degeneration (IDD) is a leading cause of disability with limited treatment strategies. A better understanding of the mechanism of IDD might enable less invasive and more targeted treatments. This study aimed to identify the circular RNA (circRNA)–microRNA (miRNA)–messenger RNA (mRNA) competing endogenous RNA (ceRNA) regulatory mechanisms in IDD. Methods The GSE67567 microarray dataset was downloaded from the Gene Expression Omnibus database. After data preprocessing, differentially expressed circRNAs, miRNAs and mRNAs between IDD and controls were identified. A ceRNA network was constructed on the basis of the interaction between circRNAs and miRNAs, and miRNAs and mRNAs. Pathway enrichment analysis was performed on the mRNAs in the ceRNA network. Then, with ‘intervertebral disc degeneration’ as keywords, IDD-related Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were searched for in the Comparative Toxicogenomics Database. Results A total of 105 differentially expressed circRNAs, 84 miRNAs and 967 mRNAs were identified. After analysis, 86 circRNA–miRNA, and 126 miRNA–mRNA regulatory relationship pairs were obtained to construct a ceRNA network. The mRNAs were enriched in six KEGG signalling pathways, and four were associated with IDD: the hsa04350: TGF-beta signalling pathway, hsa04068: FoxO signalling pathway, hsa05142: Chagas disease (American trypanosomiasis) and hsa04380: Osteoclast differentiation. An IDD-related ceRNA network was constructed involving four circRNAs, three miRNAs and 11 mRNAs. Auxiliary validation showed that the expression levels of miR-185-5p, miR-486-5p, ACVR1B, FOXO1, SMAD2 and TGFB1 were consistent in different databases. Conclusions Our study identified some circRNA–miRNA–mRNA interaction axes potentially associated with the progression of IDD, viz.: circRNA_100086–miR-509-3p–MAPK1, circRNA_000200–miR-185-5p–TGFB1, circRNA_104308–miR-185-5p–TGFB1, circRNA_400090–miR-486-5p–FOXO1 and circRNA_400090–miR-486-5p–SMAD2. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-022-05579-0. 1. An IDD-related ceRNA network involving four circRNAs, three miRNAs and 11 mRNAs was constructed. 2. The expression levels of miR-185-5p, miR-486-5p, FOXO1, SMAD2 and TGFB1 were consistent in different databases. 3. Our study identified IDD-related circRNA–miRNA–mRNA interaction axes, including circRNA_100086–miR-509-3p–MAPK1.
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Affiliation(s)
- Bin Yu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China
| | - Ziqi Zhu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China
| | - Tao Hu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China
| | - Jiawei Lu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China
| | - Beiduo Shen
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China
| | - Tongde Wu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China
| | - Kai Guo
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China
| | - Surendra Kumar Chaudhary
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China
| | - Hang Feng
- Department of Surgery of Spine and Spinal Cord, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan, China
| | - Weidong Zhao
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China.
| | - Desheng Wu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Road, Shanghai, 200092, China.
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Qian J, Wang X, Su G, Shu X, Huang Z, Jiang H, Zhu Q. Platelet-rich plasma-derived exosomes attenuate intervertebral disc degeneration by promoting NLRP3 autophagic degradation in macrophages. Int Immunopharmacol 2022; 110:108962. [PMID: 35753124 DOI: 10.1016/j.intimp.2022.108962] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 06/09/2022] [Accepted: 06/12/2022] [Indexed: 11/16/2022]
Abstract
Intervertebral disc degeneration (IDD) is a common orthopedic multifactorial disease associated with spine-related disorders, such as low back pain. Recent studies have shown that both platelet-rich plasma (PRP) and exosomes could be used to treat IDD, but the effects and mechanism of PRP-derived exosomes in the treatment of IDD are still unclear. This study showed that PRP-derived exosomes inhibited the polarization of M1 macrophages by regulating the NF-κB and MAPK pathways and affected the polarization of M2 macrophages by regulating STAT6 phosphorylation. Additionally, PRP-derived exosomes promoted the autophagic degradation of NLRP3 by increasing NLRP3 ubiquitination and reducing IL-1β and Caspase-1 production. Moreover, PRP-derived exosomes could reduce IL-1β-induced apoptosis of nucleus pulposus cells. Lastly, in vivo experiments confirmed that PRP-derived exosomes reduced the expression of inflammatory mediators and apoptotic factors, which could thereby alleviate the progression of IDD. Taken together, these data showed that PRP-derived exosomes could alleviate the IDD-associated inflammation by regulating the ubiquitination and autophagic degradation of NLRP3 inflammasome, providing new insights into the treatment of IDD.
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Affiliation(s)
- Jun Qian
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China; Department of Orthopaedics, Affiliated Hengyang Hospital, Southern Medical University (Hengyang Central Hospital), Hengyang, China
| | - Xiangdong Wang
- Hengyang Maternal and Child Health Hospital, Hengyang 421001, Hunan Province, China
| | - Guanghui Su
- Department of Orthopaedics, Affiliated Hengyang Hospital, Southern Medical University (Hengyang Central Hospital), Hengyang, China
| | - Xiaolin Shu
- Department of Orthopaedics, Affiliated Hengyang Hospital, Southern Medical University (Hengyang Central Hospital), Hengyang, China
| | - Zucheng Huang
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Huaji Jiang
- Department of Orthopaedics, Yuebei People's Hospital Affiliated to Medical College of Shantou University, Shaoguan 512026, China; Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
| | - Qingan Zhu
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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Yamagishi A, Nakajima H, Kokubo Y, Yamamoto Y, Matsumine A. Polarization of infiltrating macrophages in the outer annulus fibrosus layer associated with the process of intervertebral disc degeneration and neural ingrowth in the human cervical spine. Spine J 2022; 22:877-886. [PMID: 34902589 DOI: 10.1016/j.spinee.2021.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/11/2021] [Accepted: 12/06/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT As no infiltrating macrophages exist in healthy discs, understanding the role of infiltrating macrophages including their polarity (M1 and M2 phenotypes) in intervertebral discs (IVDs) is important in the assessment of the pathomechanisms of disc degeneration. PURPOSE To determine the relationship between infiltrating macrophage polarization and the progression of human cervical IVD degeneration. STUDY DESIGN Histopathological study using harvested human cervical IVDs. METHODS IVDs collected during anterior cervical decompression from 60 patients were subjected to immunostaining and immunoblotting. The samples were classified as type 0-3 according to the percentage of CD16- and CD206-positive cells to CD68-positive cells in the outer annulus fibrosus layer. The number of vessels and nerve fibers and the severity of chronic inflammation with a focus on inflammatory cell infiltration, fibrosis, and capillary proliferation were also assessed. RESULTS The number of CD16-positive cells was the highest in type 2 IVDs, and was suppressed following the infiltration of CD206-positive cells. The degree of chronic inflammation was significantly higher in type 2 and type 3 IVDs, and the number of nerve fibers was significantly higher in type 3 IVDs. The endothelial cells of small vessels were positive for nerve growth factor, brain-derived neurotrophic factor, and neurotrophin-3 expression. Staining for tropomyosin receptor kinase (Trk)-A, Trk-B, and Trk-C was positive in aberrant fibers. In immunoblot analysis, the expression levels of these neurotrophic factors and receptors were significantly higher in type 2 and 3 IVDs. CONCLUSIONS The polarity of macrophages around newly developed microvasculature might be altered with cervical IVD degeneration. A higher number of infiltrating M1 macrophages around the vessels was associated with chronic inflammation; however, their number got suppressed following the infiltration of M2 macrophages. The expression of neurotrophins in the capillaries of small vessels might contribute to neural ingrowth into degenerated IVDs. CLINICAL SIGNIFICANCE Clarifying macrophages polarity change around new microvasculature associated with progression of IVD degeneration could enhance our understanding of the underlying mechanisms of neural ingrowth into degenerated IVDs and lead to development of a novel therapeutic target for prevention of IVD.
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Affiliation(s)
- Atsushi Yamagishi
- Department of Orthopaedics and Rehabilitation Medicine, Faculty of Medical Sciences University of Fukui, 23-3 Matsuoka Shimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
| | - Hideaki Nakajima
- Department of Orthopaedics and Rehabilitation Medicine, Faculty of Medical Sciences University of Fukui, 23-3 Matsuoka Shimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan.
| | - Yasuo Kokubo
- Department of Orthopaedics and Rehabilitation Medicine, Faculty of Medical Sciences University of Fukui, 23-3 Matsuoka Shimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
| | - Yusuke Yamamoto
- Department of Orthopaedics and Rehabilitation Medicine, Faculty of Medical Sciences University of Fukui, 23-3 Matsuoka Shimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
| | - Akihiko Matsumine
- Department of Orthopaedics and Rehabilitation Medicine, Faculty of Medical Sciences University of Fukui, 23-3 Matsuoka Shimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
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DiStefano TJ, Vaso K, Danias G, Chionuma HN, Weiser JR, Iatridis JC. Extracellular Vesicles as an Emerging Treatment Option for Intervertebral Disc Degeneration: Therapeutic Potential, Translational Pathways, and Regulatory Considerations. Adv Healthc Mater 2022; 11:e2100596. [PMID: 34297485 PMCID: PMC8783929 DOI: 10.1002/adhm.202100596] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/08/2021] [Indexed: 12/14/2022]
Abstract
Emergent approaches in regenerative medicine look toward the use of extracellular vesicles (EVs) as a next-generation treatment strategy for intervertebral disc (IVD) degeneration (IVDD) because of their ability to attenuate chronic inflammation, reduce apoptosis, and stimulate proliferation in a number of tissue systems. Yet, there are no Food and Drug Administration (FDA)-approved EV therapeutics in the market with an indication for IVDD, which motivates this article to review the current state of the field and provide an IVD-specific framework to assess its efficacy. In this systematic review, 29 preclinical studies that investigate EVs in relation to the IVD are identified, and additionally, the regulatory approval process is reviewed in an effort to accelerate emerging EV-based therapeutics toward FDA submission and timeline-to-market. The majority of studies focus on nucleus pulposus responses to EV treatment, where the main findings show that stem cell-derived EVs can decelerate the progression of IVDD on the molecular, cellular, and organ level. The findings also highlight the importance of the EV parent cell's pathophysiological and differentiation state, which affects downstream treatment responses and therapeutic outcomes. This systematic review substantiates the use of EVs as a promising cell-free strategy to treat IVDD and enhance endogenous repair.
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Affiliation(s)
- Tyler J. DiStefano
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York NY, USA
| | - Keti Vaso
- Department of Chemical Engineering, The Cooper Union for the Advancement of Science and Art, New York NY, USA
| | - George Danias
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York NY, USA
| | - Henry N. Chionuma
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York NY, USA
| | - Jennifer R. Weiser
- Department of Chemical Engineering, The Cooper Union for the Advancement of Science and Art, New York NY, USA
| | - James C. Iatridis
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York NY, USA
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Bögel G, Murányi J, Szokol B, Kukor Z, Móra I, Kardon T, Őrfi L, Hrabák A. Production of NOS2 and inflammatory cytokines is reduced by selected protein kinase inhibitors with partial repolarization of HL-60 derived and human blood macrophages. Heliyon 2022; 8:e08670. [PMID: 35028455 PMCID: PMC8741463 DOI: 10.1016/j.heliyon.2021.e08670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 11/10/2021] [Accepted: 12/21/2021] [Indexed: 11/25/2022] Open
Abstract
JAK/STAT pathway plays a well-known role in macrophage polarization, but other signaling routes may also be involved. The aim of this study was to identify new signaling pathways and repolarize macrophages by selected protein kinase inhibitors. HL-60 derived macrophages were chosen as model cells and human blood macrophages were used for comparison. M1 and M2 polarization of HL60 derived and human blood macrophages was promoted by LPS + IFNγ (LIF) and IL-4 treatments, respectively. In HL-60 derived macrophages, M1 polarization was mediated by Erk1/2 and p38 phosphorylation, while HSP27 phosphorylation was involved in M2 polarization. The inhibition of both MAPK and JAK/STAT pathways reduced the expression of NOS2, IP-10 and TNFα, IL-8 production was decreased by the inhibition of AMPK and PKD, the upstream kinase of HSP27. HSP27 phosphorylation was inhibited by NB 142, a PKD inhibitor. The expression of CD80 (M1 marker) was reduced by MAPK and JAK/STAT inhibitors, without increasing CD206 (M2 marker). On the other hand, CD206 was reduced by PKD and AMPK inhibitors, without increasing CD80 marker. Phagocytic capacity of HL-60 derived macrophages was higher in M1 macrophages and decreased by trametinib and a p38 inhibitor, while in human blood macrophages, where AT 9283, a JAK/STAT inhibitor also caused a significant decrease in M1 polarized macrophages, no difference was observed between M1 and M2 macrophages. Our results suggest that the repolarization of macrophages cannot be achieved by inhibiting their signaling pathways; nevertheless, the expression of certain polarization markers was decreased, therefore a "depolarization" could be observed both in M1 and M2 polarized cells. Selected protein kinase inhibitors of M1 polarization, decreasing NOS 2 and inflammatory cytokines may be potential candidates for therapeutical trials against inflammatory diseases.
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Affiliation(s)
- Gábor Bögel
- Department of Molecular Biology, Institute of Biochemistry and Molecular Biology, Semmelweis University, Budapest, H-1094, Tűzoltó u. 37-43, Hungary
| | - József Murányi
- Department of Molecular Biology, Institute of Biochemistry and Molecular Biology, Semmelweis University, Budapest, H-1094, Tűzoltó u. 37-43, Hungary
- MTA-SE Pathobiochemistry Research Group, Budapest, H-1094, Tűzoltó u. 37-43, Hungary
| | - Bálint Szokol
- Vichem Chemie Research Ltd., Veszprém, H-8200, Viola u. 2., Hungary
| | - Zoltán Kukor
- Department of Molecular Biology, Institute of Biochemistry and Molecular Biology, Semmelweis University, Budapest, H-1094, Tűzoltó u. 37-43, Hungary
| | - István Móra
- Department of Molecular Biology, Institute of Biochemistry and Molecular Biology, Semmelweis University, Budapest, H-1094, Tűzoltó u. 37-43, Hungary
- MTA-SE Pathobiochemistry Research Group, Budapest, H-1094, Tűzoltó u. 37-43, Hungary
| | - Tamás Kardon
- Department of Molecular Biology, Institute of Biochemistry and Molecular Biology, Semmelweis University, Budapest, H-1094, Tűzoltó u. 37-43, Hungary
| | - László Őrfi
- Vichem Chemie Research Ltd., Veszprém, H-8200, Viola u. 2., Hungary
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, H-1092, Hőgyes E. u. 9., Hungary
| | - András Hrabák
- Department of Molecular Biology, Institute of Biochemistry and Molecular Biology, Semmelweis University, Budapest, H-1094, Tűzoltó u. 37-43, Hungary
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Cui S, Zhang L. microRNA-129-5p shuttled by mesenchymal stem cell-derived extracellular vesicles alleviates intervertebral disc degeneration via blockade of LRG1-mediated p38 MAPK activation. J Tissue Eng 2021; 12:20417314211021679. [PMID: 34377430 PMCID: PMC8330460 DOI: 10.1177/20417314211021679] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 05/14/2021] [Indexed: 12/29/2022] Open
Abstract
Mesenchymal stem cell (MSC)-derived extracellular vesicles (EVs) have been reported to deliver exogenous microRNAs (miRNAs or miRs) to reduce the progression of intervertebral disc degeneration (IDD). The purpose of the current study was to investigate the therapeutic potential of MSC-derived EVs delivering miR-129-5p in IDD. First, miR-129-5p expression levels were quantified in nucleus pulposus (NP) tissues of IDD patients. An IL-1β-induced NP cell model with IDD was then established, and co-cultured with EVs derived from MSCs that had been transfected with miR-129-5p mimic or inhibitor to elucidate the effects of miR-129-5p on cell viability, apoptosis, and ECM degradation. In addition, RAW264.7 cells were treated with the conditioned medium (CM) of NP cells. Next, the expression patterns of polarization markers and those of inflammatory factors in macrophages were detected using flow cytometry and ELISA, respectively. Lastly, rat models of IDD were established to validate the in vitro findings. It was found that miR-129-5p was poorly-expressed in NP tissues following IDD. Delivery of miR-129-5p to NP cells by MSC-derived EVs brought about a decrease in NP cell apoptosis, ECM degradation and M1 polarization of macrophages. Moreover, miR-129-5p directly-targeted LRG1, which subsequently promoted the activation of p38 MAPK signaling pathway, thus polarizing macrophages toward the M1 phenotype. Furthermore, MSC-derived EVs transferring miR-129-5p relieved IDD via inhibition of the LRG1/p38 MAPK signaling in vivo. Altogether, our findings indicated that MSC-derived EVs carrying miR-129-5p confer protection against IDD by targeting LRG1 and suppressing the p38 MAPK signaling pathway, offering a novel theranostic marker in IDD.
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Affiliation(s)
- Shaoqian Cui
- Department of Spine Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| | - Lei Zhang
- Department of Spine Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, P.R. China
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Samarasinghe KTG, Crews CM. Targeted protein degradation: A promise for undruggable proteins. Cell Chem Biol 2021; 28:934-951. [PMID: 34004187 PMCID: PMC8286327 DOI: 10.1016/j.chembiol.2021.04.011] [Citation(s) in RCA: 105] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/29/2021] [Accepted: 04/20/2021] [Indexed: 02/06/2023]
Abstract
Protein homeostasis, or "proteostasis," is indispensable for a balanced, healthy environment within the cell. However, when natural proteostasis mechanisms are overwhelmed from excessive loads of dysregulated proteins, their accumulation can lead to disease initiation and progression. Recently, the induced degradation of such disease-causing proteins by heterobifunctional molecules, i.e., PROteolysis TArgeting Chimeras (PROTACs), is emerging as a potential therapeutic modality. In the 2 decades since the PROTAC concept was proposed, several additional Targeted Protein Degradation (TPD) strategies have also been explored to target previously undruggable proteins, such as transcription factors. In this review, we discuss the progress and evolution of the TPD field, the breadth of the proteins targeted by PROTACs and the biological effects of their degradation.
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Affiliation(s)
- Kusal T G Samarasinghe
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA
| | - Craig M Crews
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA; Department of Chemistry, Yale University, New Haven, CT 06511, USA; Department of Pharmacology, Yale University, New Haven, CT 06511, USA.
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Zhu L, Yu C, Zhang X, Yu Z, Zhan F, Yu X, Wang S, He F, Han Y, Zhao H. The treatment of intervertebral disc degeneration using Traditional Chinese Medicine. JOURNAL OF ETHNOPHARMACOLOGY 2020; 263:113117. [PMID: 32738389 DOI: 10.1016/j.jep.2020.113117] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 06/04/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Intervertebral disc degeneration (IDD) is one of the most common causes of chronic low back pain that spending a lot of workforces and financial resources, seriously affecting human physical and mental health. Clinically used drug treatments and surgical treatments cannot fundamentally relieve the disease and have a risk of recurrence. Traditional Chinese Medicine (TCM) has a history of more than a thousand years in the prevention and treatment of IDD. However, so far, there are few reviews on the treatment of IDD by TCM. Therefore, it is crucial and necessary to systematically mine the existing literature on the treatment of IDD with TCM. This paper strives to systematically describe the modern medicine and TCM theoretical research on IDD, progress in the treatment of IDD and focuses on the treatment of IDD by TCM, which would lay some theoretical foundation and provide new directions for future research. MATERIALS AND METHODS Information on clinical observations, animal experiments and relevant pharmacology data about the treatment of IDD were gathered from various sources including traditional Chinese books and Chinese Pharmacopoeia, scientific databases (Elsevier, PubMed, Science Direct, Baidu Scholar, CNKI, Spring Link, Web of Science) and from different professional websites. RESULTS This review mainly introduces the current research on the theoretical research on IDD, the combination principle of the TCM formula, and the underlying mechanism of the formula and active ingredients. CONCLUSIONS At present, domestic and foreign scholars have carried out a lot of research in different ways, such as the molecular mechanism and predisposing factors of IDD, which provides theoretical development and clinical practice significance for future research. TCM, as a multi-component and multi-targeted drug, can produce synergistic effects to exert its efficacy. Therefore, the development of TCM with more specific functions and practical data will not only become a significant trend in the world market but also has an irreplaceable role in the future treatment of IDD.
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Affiliation(s)
- Liguo Zhu
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China
| | - Changsui Yu
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China.
| | - Xiaofeng Zhang
- Heilongjiang Provincial Administration of Traditional Chinese Medicine, Harbin, 150030, China
| | - Zhongbao Yu
- Liaoning Yuzhongbao Chinese Medicine Clinic, Kuandian, 118200, China
| | - Fengyuan Zhan
- Liaoning Yuzhongbao Chinese Medicine Clinic, Kuandian, 118200, China
| | - Xin Yu
- Heilongjiang University of Chinese Medicine, Harbin, 150040, China
| | - Shuren Wang
- The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, 150001, China
| | - Feng He
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China
| | - Yusheng Han
- Heilongjiang University of Chinese Medicine, Harbin, 150040, China
| | - He Zhao
- Tsinghua University, Beijing, 100084, China
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PROTACs: An Emerging Therapeutic Modality in Precision Medicine. Cell Chem Biol 2020; 27:998-1014. [DOI: 10.1016/j.chembiol.2020.07.020] [Citation(s) in RCA: 138] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/17/2020] [Accepted: 07/23/2020] [Indexed: 12/17/2022]
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Germann UA, Alam JJ. P38α MAPK Signaling-A Robust Therapeutic Target for Rab5-Mediated Neurodegenerative Disease. Int J Mol Sci 2020; 21:E5485. [PMID: 32751991 PMCID: PMC7432772 DOI: 10.3390/ijms21155485] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/25/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022] Open
Abstract
Multifactorial pathologies, involving one or more aggregated protein(s) and neuroinflammation are common in major neurodegenerative diseases, such as Alzheimer's disease and dementia with Lewy bodies. This complexity of multiple pathogenic drivers is one potential explanation for the lack of success or, at best, the partial therapeutic effects, respectively, with approaches that have targeted one specific driver, e.g., amyloid-beta, in Alzheimer's disease. Since the endosome-associated protein Rab5 appears to be a convergence point for many, if not all the most prominent pathogenic drivers, it has emerged as a major therapeutic target for neurodegenerative disease. Further, since the alpha isoform of p38 mitogen-activated protein kinase (p38α) is a major regulator of Rab5 activity and its effectors, a biology that is distinct from the classical nuclear targets of p38 signaling, brain-penetrant selective p38α kinase inhibitors provide the opportunity for significant therapeutic advances in neurogenerative disease through normalizing dysregulated Rab5 activity. In this review, we provide a brief summary of the role of Rab5 in the cell and its association with neurodegenerative disease pathogenesis. We then discuss the connection between Rab5 and p38α and summarize the evidence that through modulating Rab5 activity there are therapeutic opportunities in neurodegenerative diseases for p38α kinase inhibitors.
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Fu J, Zang Y, Zhou Y, Chen C, Shao S, Hu M, Shi G, Wu L, Zhang D, Zhang T. A novel triptolide derivative ZT01 exerts anti-inflammatory effects by targeting TAK1 to prevent macrophage polarization into pro-inflammatory phenotype. Biomed Pharmacother 2020; 126:110084. [DOI: 10.1016/j.biopha.2020.110084] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/03/2020] [Accepted: 03/05/2020] [Indexed: 12/21/2022] Open
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Hou Y, Shi G, Guo Y, Shi J. Epigenetic modulation of macrophage polarization prevents lumbar disc degeneration. Aging (Albany NY) 2020; 12:6558-6569. [PMID: 32310825 PMCID: PMC7202517 DOI: 10.18632/aging.102909] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 02/05/2020] [Indexed: 12/25/2022]
Abstract
Inflammation plays an essential role in the development of lumbar disc degeneration (LDD), although the exact effects of macrophage subtypes on LDD remain unclear. Based on previous studies, we hypothesized that M2-polarization of local macrophages and simultaneous suppression of their production of fibrotic transforming growth factor beta 1 (TGFβ1) could inhibit progression of LDD. Thus, we applied an orthotopic injection of adeno-associated virus (AAV) carrying shRNA for DNA Methyltransferase 1 (DNMT1) and/or shRNA for TGFβ1 under a macrophage-specific CD68 promoter to specifically target local macrophages in a mouse model for LDD. We found that shDNMT1 significantly reduced levels of the pro-inflammatory cytokines TNFα, IL-1β and IL-6, significantly increased levels of the anti-inflammatory cytokines IL-4 and IL-10, significantly increased M2 macrophage polarization, significantly reduced cell apoptosis in the disc degeneration zone and significantly reduced LDD-associated pain. The anti-apoptotic and anti-pain effects were further strengthened by co-application of shTGFβ1. Together, these data suggest that M2 polarization of macrophages induced by both epigenetic modulation and suppressed production and release of TGFβ1 from polarized M2 macrophages, may have a demonstrable therapeutic effect on LDD.
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Affiliation(s)
- Yang Hou
- Department of Orthopaedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Guodong Shi
- Department of Orthopaedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Yongfei Guo
- Department of Orthopaedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Jiangang Shi
- Department of Orthopaedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
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Modulation of the In Vivo Inflammatory Response by Pro- Versus Anti-Inflammatory Intervertebral Disc Treatments. Int J Mol Sci 2020; 21:ijms21051730. [PMID: 32138314 PMCID: PMC7084831 DOI: 10.3390/ijms21051730] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/18/2020] [Accepted: 02/27/2020] [Indexed: 12/14/2022] Open
Abstract
Inflammation is central in intervertebral disc (IVD) degeneration/regeneration mechanisms, and its balance is crucial to maintain tissue homeostasis. This work investigates the modulation of local and systemic inflammatory response associated with IVD degeneration/herniation by administration of PRO- versus ANTI-inflammatory treatments. Chitosan/poly-γ-glutamic acid nanocomplexes, known as pro-inflammatory (PRO), and soluble diclofenac, a non-steroidal anti-inflammatory drug (ANTI), were intradiscally administered in a rat IVD injury model, 24 h after lesion. Two weeks after administration, a reduction of disc height accompanied by hernia formation was observed. In the PRO-inflammatory treated group, IL-1β, IL-6 and COX-2 IVD gene expression were upregulated, and loss of nucleus pulposus (NP) structure and composition was observed. Systemically, lower T-cell frequency was observed in the lymph nodes (LN) and spleen (SP) of the PRO group, together with an increase in CD4+ T cells subset in the blood (BL) and LN. In contrast, the ANTI-group had higher proteoglycans/collagen ratio and collagen type 2 content in the NP, while an increase in the frequency of myeloid cells, M1 macrophages and activated macrophages (MHCII+) was observed at the systemic level. Overall, this study illustrates the dynamics of local and systemic inflammatory and immune cell responses associated with intradiscal therapies, which will contribute to designing more successful immunomodulatory treatments for IVD degeneration.
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45
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Silva AJ, Ferreira JR, Cunha C, Corte-Real JV, Bessa-Gonçalves M, Barbosa MA, Santos SG, Gonçalves RM. Macrophages Down-Regulate Gene Expression of Intervertebral Disc Degenerative Markers Under a Pro-inflammatory Microenvironment. Front Immunol 2019; 10:1508. [PMID: 31333653 PMCID: PMC6616110 DOI: 10.3389/fimmu.2019.01508] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/17/2019] [Indexed: 12/04/2022] Open
Abstract
Low back pain is a highly prevalent clinical problem and intervertebral disc (IVD) degeneration is now accepted as the major pathophysiological mechanism responsible for this condition. Accumulating evidence suggests that inflammation plays a crucial role in the progression of human IVD degeneration, with macrophages being pointed as the key immune cell players in this process since their infiltration in degenerated IVD samples has been extensively demonstrated. Since they are highly plastic, macrophages can play different roles depending on the microenvironmental cues. The study of inflammation associated with IVD degeneration has been somehow neglected and one of the reasons is related with lack of adequate models. To overcome this, we established and characterized a new model of IVD organ culture under pro-inflammatory conditions to further dissect the role of macrophages in IVD associated immune response. For that, human monocyte-derived macrophages were co-cultured either with bovine caudal IVD punches in the presence of the pro-inflammatory cytokine IL-1β, or IVD-conditioned medium (CM), to investigate how IVD-produced factors influence macrophage phenotype. After 72 h, metabolic activity, gene expression and cytokine profile of macrophages and IVD cells were measured. Our results show that macrophages and IVDs remain metabolically active in the presence of IL-1β, significantly upregulate CCR7 gene expression and increase production of IL-6 on macrophages. When treating macrophages with IL-1β-IVD-CM, CCR7 upregulation follows the same trend, while for IL-6 an opposite effect was observed. On the other hand, macrophages interfere with IVD ECM remodeling, decreasing MMP3 expression and downregulating aggrecan and collagen II gene expression in the presence of IL-1β. Overall, the co-culture model established in this study can be considered a suitable approach to address the cellular and molecular pathways that regulate macrophage-IVD crosstalk, suggesting that degenerated IVD tissue tends to polarize human macrophages toward a more pro-inflammatory profile, which seems to aggravate IVD degeneration. This model could be used to improve the knowledge of the mechanisms that link IVD degeneration and the immune response.
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Affiliation(s)
- Ana J Silva
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Porto, Portugal
| | - Joana R Ferreira
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Porto, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Carla Cunha
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Porto, Portugal
| | - João V Corte-Real
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Porto, Portugal.,FCUP - Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Mafalda Bessa-Gonçalves
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Porto, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Mario A Barbosa
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Porto, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Susana G Santos
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Porto, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Raquel M Gonçalves
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Porto, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
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Chen X, Zhang P, Ma X. Rab7 delays intervertebral disc degeneration through the inhibition of the p38MAPK pathway. Biochem Biophys Res Commun 2019; 514:835-841. [DOI: 10.1016/j.bbrc.2019.04.184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 04/27/2019] [Indexed: 12/25/2022]
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47
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Electrical impulse effects on degenerative human annulus fibrosus model to reduce disc pain using micro-electrical impulse-on-a-chip. Sci Rep 2019; 9:5827. [PMID: 30967598 PMCID: PMC6456732 DOI: 10.1038/s41598-019-42320-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 03/29/2019] [Indexed: 02/06/2023] Open
Abstract
Electrical stimulation of cells and tissues for therapeutic benefit is a well-established method. Although animal studies can emulate the complexity of an organism’s physiology, lab-on-a-chip platforms provide a suitable primary model for follow-up animal studies. Thus, inexpensive and easy-to-use platforms for in vitro human cell studies are required. In the present study, we designed a micro-electrical impulse (micro-EI)-on-a-chip (micro-EI-chip), which can precisely control electron density and adjust the frequency based on a micro-EI. The micro-EI-chip can stimulate cells at various micro-EI densities (0–500 mV/mm) and frequencies (0–300 Hz), which enables multiple co-culture of different cell types with or without electrical stimulation. As a proof-of-concept study, a model involving degenerative inflamed human annulus fibrosus (hAF) cells was established in vitro and the effects of micro-EI on inflamed hAF cells were evaluated using the micro-EI-chip. Stimulation of the cells (150 mV/mm at 200 Hz) inhibited the secretion of inflammatory cytokines and downregulated the activities of extracellular matrix-modifying enzymes and matrix metalloproteinase-1. These results show that micro-EI stimulation could affect degenerative diseases based on inflammation, implicating the micro-EI-chip as being useful for basic research of electroceuticals.
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48
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Effect of Thrombin-Induced MCP-1 and MMP-3 Production Via PAR1 Expression in Murine Intervertebral Discs. Sci Rep 2018; 8:11320. [PMID: 30054581 PMCID: PMC6063965 DOI: 10.1038/s41598-018-29669-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/16/2018] [Indexed: 12/24/2022] Open
Abstract
Structural changes in nucleus pulposus cells induce intervertebral disc (IVD) degeneration as a consequence of cytokine generation, biochemical products, and changes in the local environment. We have previously shown that inflammatory cytokines induce murine IVD (mIVD) angiogenesis and macrophage migration. Although the physiological roles of thrombin, a known proinflammatory factor, are documented, its relationship to IVD degeneration remains largely unexplored. Thrombin mediates cellular responses via the activation of protease-activated receptors such as PAR1 which has been studied in numerous cell types, but not extensively in IVD cells. This study was designed to investigate the endogenous expression of thrombin, tissue factor, and PAR1 in cultured coccygeal mIVDs. Thrombin exclusively induced MCP-1 via the MAPK-ERK and PI3K-AKT pathways. MCP-1 produced by mIVDs induced macrophage migration and thrombin treatment increased MMP-3 production to induce mIVD degeneration. These effects of thrombin on mIVDs were abrogated by a PAR1 inhibitor and suggest that thrombin may be a novel factor capable of stimulating cytokine activity implicated in the regulation several aspects of mIVDs. Mechanisms governing mIVDs, which are regulated by thrombin/PAR1 signaling, require elucidation if our understanding of IVD degenerative mechanisms is to advance.
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Chu G, Shi C, Wang H, Zhang W, Yang H, Li B. Strategies for Annulus Fibrosus Regeneration: From Biological Therapies to Tissue Engineering. Front Bioeng Biotechnol 2018; 6:90. [PMID: 30042942 PMCID: PMC6048238 DOI: 10.3389/fbioe.2018.00090] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 06/18/2018] [Indexed: 12/17/2022] Open
Abstract
Intervertebral disc (IVD) is an avascular tissue which contributes to the weight bearing, motion, and flexibility of spine. However, IVD is susceptible to damage and even failure due to injury, pathology, and aging. Annulus fibrosus (AF), the structural and functional integrity of which is critically essential to confine nucleus pulpous (NP) and maintain physiological intradiscal pressure under mechanical loading, plays a critical role in the biomechanical properties of IVD. AF degeneration commonly results in substantial deterioration of IVD. During this process, the biomechanical properties of AF and the balance between anabolism and catabolism in IVD are progressively disrupted, leading to chronic back pain, and even disability of individuals. Therefore, repairing and regenerating AF are effective treatments to degeneration-associated pains. However, they remain highly challenging due to the complexity of natural AF tissue in the aspects of cell phenotype, biochemical composition, microstructure, and mechanical properties. Tissue engineering (TE), by combining biological science and materials engineering, shed lights on AF regeneration. In this article, we review recent advances in the pro-anabolic approaches in the form of cell delivery, bioactive factors delivery, gene therapy, and TE strategies for achieving AF regeneration.
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Affiliation(s)
- Genglei Chu
- Orthopaedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, China
- Department of Orthopaedic Surgery, First Affiliated Hospital, Soochow University, Suzhou, China
| | - Chen Shi
- Department of Biomedical Engineering, National University of Singapore, Singapore, Singapore
| | - Huan Wang
- Orthopaedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, China
- Department of Orthopaedic Surgery, First Affiliated Hospital, Soochow University, Suzhou, China
| | - Weidong Zhang
- Orthopaedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, China
- Department of Orthopaedic Surgery, First Affiliated Hospital, Soochow University, Suzhou, China
| | - Huilin Yang
- Orthopaedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, China
- Department of Orthopaedic Surgery, First Affiliated Hospital, Soochow University, Suzhou, China
| | - Bin Li
- Orthopaedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, China
- Department of Orthopaedic Surgery, First Affiliated Hospital, Soochow University, Suzhou, China
- China Orthopaedic Regenerative Medicine Group, Hangzhou, China
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Bai D, Zhao Y, Zhu Q, Zhou Y, Zhao Y, Zhang T, Guo Q, Lu N. LZ205, a newly synthesized flavonoid compound, exerts anti-inflammatory effect by inhibiting M1 macrophage polarization through regulating PI3K/AKT/mTOR signaling pathway. Exp Cell Res 2018; 364:84-94. [DOI: 10.1016/j.yexcr.2018.01.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 01/20/2018] [Accepted: 01/24/2018] [Indexed: 01/26/2023]
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