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Tang T, Lu T, Li B, Zhou Y, Huang L, Zhang L, Chen Y, Li H. Deletion of vitamin D receptor exacerbated temporomandibular joint pathological changes under abnormal mechanical stimulation. Life Sci 2024; 353:122913. [PMID: 39004274 DOI: 10.1016/j.lfs.2024.122913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/10/2024] [Accepted: 07/10/2024] [Indexed: 07/16/2024]
Abstract
AIMS Temporomandibular disorder can cause degenerative pathological changes by aseptic inflammation in the temporomandibular joint (TMJ). Vitamin D (VD) is known for maintaining calcium homeostasis, and recent studies indicated that VD and the vitamin D receptor (VDR) are important in inflammatory responses. In this study, we explored the anti-inflammatory effect of VD-VDR signaling axis in TMJ pathological degeneration. MAIN METHODS Mice ablated for Vdr (Vdr-/-res) were fed with a rescue diet to avoid hypocalcemia. With abnormal mechanical stimulation, unilateral anterior crossbite (UAC) induced temporomandibular disorders in mice. Histological staining, immunohistochemistry staining, and micro-CT analysis were performed to evaluate TMJ pathological changes. To identify the mechanisms in the aseptic inflammatory process, in vitro experiments were conducted on wild-type (WT) and Vdr-/- chondrocytes with compressive mechanical stress loading, and the related inflammatory markers were examined. KEY FINDINGS Vdr-/-res mice did not develop rickets with a high calcium rescue diet. The TMJ cartilage thickness in Vdr-/-res mice was significantly decreased with mechanical stress stimulation compared to WT mice. UAC-induced bone resorption was obvious, and the number of osteoclasts significantly increased in Vdr-/-res mice. The proliferation was inhibited and the gene expression of Il1b, Mmp3, and Mmp13 was significantly increased in Vdr-/- chondrocytes. However, WT chondrocytes showed significantly increased Tnfa gene expression as a response to mechanical stress but not in Vdr-/- chondrocytes. SIGNIFICANCE VD-VDR is crucial in TMJ pathological changes under abnormal mechanical stimulation. Deletion of Vdr exacerbated inflammatory response excluding TNFα, inhibited chondrocyte proliferation, and promoted bone resorption in TMJ.
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Affiliation(s)
- Tianyi Tang
- Department of Orthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China; Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, London NW3 2PF, UK.
| | - Tong Lu
- Department of Orthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China
| | - Baochao Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China
| | - Yiwen Zhou
- Department of Orthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
| | - Ling Huang
- Department of Orthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China
| | - Lu Zhang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Yunzi Chen
- Key Laboratory of Immune Microenvironment and Disease, Department of Immunology, Nanjing Medical University, Nanjing 211100, China.
| | - Huang Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
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Kim ME, Lee JS. Immune Diseases Associated with Aging: Molecular Mechanisms and Treatment Strategies. Int J Mol Sci 2023; 24:15584. [PMID: 37958564 PMCID: PMC10647753 DOI: 10.3390/ijms242115584] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/19/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023] Open
Abstract
Aging is associated with a decline in immune function, thereby causing an increased susceptibility to various diseases. Herein, we review immune diseases associated with aging, focusing on tumors, atherosclerosis, and immunodeficiency disorders. The molecular mechanisms underlying these conditions are discussed, highlighting telomere shortening, tissue inflammation, and altered signaling pathways, e.g., the mammalian target of the rapamycin (mTOR) pathway, as key contributors to immune dysfunction. The role of the senescence-associated secretory phenotype in driving chronic tissue inflammation and disruption has been examined. Our review underscores the significance of targeting tissue inflammation and immunomodulation for treating immune disorders. In addition, anti-inflammatory medications, including corticosteroids and nonsteroidal anti-inflammatory drugs, and novel approaches, e.g., probiotics and polyphenols, are discussed. Immunotherapy, particularly immune checkpoint inhibitor therapy and adoptive T-cell therapy, has been explored for its potential to enhance immune responses in older populations. A comprehensive analysis of immune disorders associated with aging and underlying molecular mechanisms provides insights into potential treatment strategies to alleviate the burden of these conditions in the aging population. The interplay among immune dysfunction, chronic tissue inflammation, and innovative therapeutic approaches highlights the importance of elucidating these complex processes to develop effective interventions to improve the quality of life in older adults.
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Affiliation(s)
| | - Jun Sik Lee
- Department of Biological Science, Immunology Research Lab & BK21-Four Educational Research Group for Age-Associated Disorder Control Technology, Chosun University, Gwangju 61452, Republic of Korea;
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Hsia Y, Sivasubramanian M, Chu CH, Chuang YC, Lai YK, Lo LW. A Dual Concentration-Tailored Cytokine-Chemo Nanosystem to Alleviate Multidrug Resistance and Redirect Balance of Cancer Proliferation and Apoptosis. Int J Nanomedicine 2023; 18:4253-4274. [PMID: 37534057 PMCID: PMC10392912 DOI: 10.2147/ijn.s412932] [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: 04/11/2023] [Accepted: 07/19/2023] [Indexed: 08/04/2023] Open
Abstract
Background Cancer multidrug resistance (MDR) is an important factor that severely affects the chemotherapeutic efficacy. Among various methods to bypass MDR, usage of cytokines, such as tumor necrosis factor alpha (TNFα) is attractive, which exerts antitumor effects of immunotherapeutic response and apoptotic/proinflammatory pathways. Nevertheless, the challenges remain how to implement targeted delivery of TNFα to reduce toxicity and manifest the involved signaling mechanism that subdues MDR. Methods We synthesized a multifunctional nanosytem, in which TNFα covalently bound to doxorubicin (Dox)-loaded pH-responsive mesoporous silica nanoparticles (MSN) through bi-functional polyethylene glycol (TNFα-PEG-MSN-Hydrazone-Dox) as a robust design to overcome MDR. Results The salient features of this nanoplatform are: 1) by judicious tailoring of TNFα concentration conjugated on MSN, we observed it could lead to a contrary effect of either proliferation or suppression of tumor growth; 2) the MSN-TNFα at higher concentration serves multiple functions, besides tumor targeting and inducer of apoptosis through extrinsic pathway, it inhibits the expression level of p-glycoprotein (P-gp), a cell membrane protein that functions as a drug efflux pump; 3) the enormous surface area of MSN provides for TNFα functionalization, and the nanochannels accommodate chemotherapeutics, Dox; 4) targeted intracellular release of Dox through the pH-dependent cleavage of hydrazone bonds induces apoptosis by the specific intrinsic pathway; and 5) TNFα-PEG-MSN-Hydrazone-Dox (MSN-Dox-TNFα) could infiltrate deep into the 3D spheroid tumor model through disintegration of tight junction proteins. When administered intratumorally in a Dox-resistant mouse tumor model, MSN-Dox-TNFα exhibited a synergistic therapeutic effect through the collective performances of TNFα and Dox. Conclusion We hereby develop and demonstrate a multifunctional MSN-Dox-TNFα system with concentration-tailored TNFα that can abrogate the drug resistance mechanism, and significantly inhibit the tumor growth through both intrinsic and extrinsic apoptosis pathways, thus making it a highly potential nanomedicine translated in the treatment of MDR tumors.
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Affiliation(s)
- Yu Hsia
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Taiwan
- Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
| | - Maharajan Sivasubramanian
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Taiwan
| | - Chia-Hui Chu
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Taiwan
| | - Yao-Chen Chuang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Taiwan
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Yiu-Kay Lai
- Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
| | - Leu-Wei Lo
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Taiwan
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Li Z, Yang H, Hai Y, Cheng Y. Regulatory Effect of Inflammatory Mediators in Intervertebral Disc Degeneration. Mediators Inflamm 2023; 2023:6210885. [PMID: 37101594 PMCID: PMC10125773 DOI: 10.1155/2023/6210885] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/11/2022] [Accepted: 03/18/2023] [Indexed: 04/28/2023] Open
Abstract
Intervertebral disc degeneration (IDD) is a major contributor to back, neck, and radicular pain. It is related to changes in tissue structure and function, including the breakdown of the extracellular matrix (ECM), aging, apoptosis of the nucleus pulposus, and biomechanical tissue impairment. Recently, an increasing number of studies have demonstrated that inflammatory mediators play a crucial role in IDD, and they are being explored as potential treatment targets for IDD and associated disorders. For example, interleukins (IL), tumour necrosis factor-α (TNF-α), chemokines, and inflammasomes have all been linked to the pathophysiology of IDD. These inflammatory mediators are found in high concentrations in intervertebral disc (IVD) tissues and cells and are associated with the severity of LBP and IDD. It is feasible to reduce the production of these proinflammatory mediators and develop a novel therapy for IDD, which will be a hotspot of future research. In this review, the effects of inflammatory mediators in IDD were described.
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Affiliation(s)
- Zhangfu Li
- Department of Orthopedic Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Honghao Yang
- Department of Orthopedic Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Yong Hai
- Department of Orthopedic Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Yunzhong Cheng
- Department of Orthopedic Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
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Ghaniem S, Nassef E, Zaineldin AI, Bakr A, Hegazi S. A Comparison of the Beneficial Effects of Inorganic, Organic, and Elemental Nano-selenium on Nile Tilapia: Growth, Immunity, Oxidative Status, Gut Morphology, and Immune Gene Expression. Biol Trace Elem Res 2022; 200:5226-5241. [PMID: 35028868 DOI: 10.1007/s12011-021-03075-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 12/19/2021] [Indexed: 12/29/2022]
Abstract
This study investigates the effects of different sources of selenium (inorganic (SSE), organic (OSE), and elemental nano-selenium (NSE)) on the performance of Nile tilapia (Oreochromis niloticus). In total, 204 Nile tilapia fingerlings were randomly divided into 4 equal groups fed 1 of 4 diets: a control (adding no selenium) and 3 diets as selenium sources (1 mg/kg diet), After a 65-day feeding trial, the growth performance parameters of Nile tilapia were significantly enhanced by dietary selenium supplementation (P < 0.05), with the highest values recorded in the OSE- and NSE-supplemented groups. The selenium-supplemented groups had the highest packed-cell volume, hemoglobin, and red blood cell levels, with the highest values seen in the NSE-supplemented group (P < 0.05). Innate immune-related enzymes and immunoglobulin levels were significantly enhanced with selenium supplementation (P < 0.05); the NSE group demonstrated the highest significant levels of these enzyme activities (P < 0.05). In all selenium-supplemented groups, malondialdehyde levels were significantly and equally reduced (P < 0.05) compared with levels in the control. Bactericidal activity was only enhanced in the NSE group (P < 0.05) compared with other treatments. The expression of TNF-α and IL-Iβ genes was significantly upregulated in selenium-supplemented groups, with the highest expression in the OSE and NSE groups (P < 0.05). These findings support the importance of incorporating selenium in the diet of Nile tilapia. Furthermore, elementary nano-selenium is more effective than inorganic or organic selenium supplementation at improving Nile tilapia growth performance and overall health.
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Affiliation(s)
- Sameh Ghaniem
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Eldsokey Nassef
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Amr I Zaineldin
- Agriculture Research Center, Animal Health Research Institute (AHRI-DOKI), Kafrelsheikh, Egypt.
| | - Abdulnasser Bakr
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Sayed Hegazi
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
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Antmen E, Muller CB, Calligaro C, Dupret-Bories A, Barthes J, Lavalle P, Vrana NE. In vitro two-step granuloma formation model for testing innate immune response to implants and coatings. BIOMATERIALS ADVANCES 2022; 138:212872. [PMID: 35913252 DOI: 10.1016/j.bioadv.2022.212872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 02/20/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
The extensive innate immune response to implanted biomaterials contributes significantly to their sub-par performance and failure. Granuloma formation is one of such reactions which results in multi-cell type clusters in line with the immune reaction to implanted materials. However, currently no in vitro model of granuloma formation exists that takes into account the arrival of multiple cell types (immune cells and connective tissue cells) to the implant insertion site. In this study, we developed a two-step model based on stimulated macrophage seeding followed by fibroblast introduction after a physiologically relevant time period for mimicking initial steps of immune reaction to biomaterials and inducing granuloma like behavior. Both LPS and TNF-α induction resulted in granuloma like formations which persisted longer than the control conditions. Introduction of human fibroblasts resulted in the colonization of the surfaces where the cell numbers and the collagen secretion were dependent on the microenvironment. In order to demonstrate the capacity of our model system to monitor the reaction to a given coating, a validated antimicrobial coating (Polyarginine (PAR)/Hyaluronic acid (HA)) was used as a testing bed. The coating prevented the adhesion of macrophages while allowing the adhesion of the fibroblast at the time of their arrival. Similar to its antimicrobial activity, macrophage metabolic activity and M2 differentiation in the presence of PAR was dependent to its chain length. The incorporation of fibroblasts resulted in decreased TNF-α and increased IL-1RA secretion especially in stimulation conditions. The pro- and anti-inflammatory cytokine secretions were low for PAR/HA coatings in line with the decreased number of macrophage presence. In the presence of complex PBMC population, the coating resulted in slightly less cellular attachment, without any significant cytokine secretion; the absence of inflammatory reaction was also demonstrated in vivo in a mouse model. The described in vitro granuloma testing system can control the macrophage reaction as a function of stimulation. It can also be used for testing new biomaterials for the potential innate immune responses and also for validation of implant coatings beyond their primary function from the immune response point of view.
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Affiliation(s)
- Ezgi Antmen
- BIOMATEN, Middle East Technical University, Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
| | - Celine B Muller
- SPARTHA Medical, 14B Rue de la Canardiere, Strasbourg Cedex 67100, France; INSERM Unité 1121 Biomaterials and Bioengineering, CRBS, 1 Rue Eugène Boeckel, Strasbourg Cedex 67000, France
| | - Cynthia Calligaro
- SPARTHA Medical, 14B Rue de la Canardiere, Strasbourg Cedex 67100, France; INSERM Unité 1121 Biomaterials and Bioengineering, CRBS, 1 Rue Eugène Boeckel, Strasbourg Cedex 67000, France
| | - Agnes Dupret-Bories
- Surgery Department, Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse Oncopole, 1 avenue Irène Joliot Curie, Toulouse 31052, France
| | - Julien Barthes
- INSERM Unité 1121 Biomaterials and Bioengineering, CRBS, 1 Rue Eugène Boeckel, Strasbourg Cedex 67000, France
| | - Philippe Lavalle
- SPARTHA Medical, 14B Rue de la Canardiere, Strasbourg Cedex 67100, France; INSERM Unité 1121 Biomaterials and Bioengineering, CRBS, 1 Rue Eugène Boeckel, Strasbourg Cedex 67000, France
| | - Nihal Engin Vrana
- SPARTHA Medical, 14B Rue de la Canardiere, Strasbourg Cedex 67100, France; INSERM Unité 1121 Biomaterials and Bioengineering, CRBS, 1 Rue Eugène Boeckel, Strasbourg Cedex 67000, France.
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7
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Wang XH, Gao JW, Bao JP, Zhu L, Xie ZY, Chen L, Peng X, Zhang C, Wu XT. GATA4 promotes the senescence of nucleus pulposus cells via NF-κB pathway. Arch Gerontol Geriatr 2022; 101:104676. [DOI: 10.1016/j.archger.2022.104676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/28/2022] [Accepted: 03/06/2022] [Indexed: 11/02/2022]
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Bioluminescence Sensing in 3D Spherical Microtissues for Multiple Bioactivity Analysis of Environmental Samples. SENSORS 2022; 22:s22124568. [PMID: 35746350 PMCID: PMC9229012 DOI: 10.3390/s22124568] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 02/04/2023]
Abstract
The development of predictive in vitro sensing tools able to provide rapid information on the different bioactivities of a sample is of pivotal importance, not only to monitor environmental toxicants, but also to understand their mechanisms of action on diverse molecular pathways. This mechanistic understanding is highly important for the characterization of toxicological hazards, and for the risk assessment of chemicals and environmental samples such as surface waters and effluents. Prompted by this need, we developed and optimized a straightforward bioluminescent multiplexed assay which enables the measurement of four bioactivities, selected for their relevance from a toxicological perspective, in bioluminescent microtissues. The assay was developed to monitor inflammatory, antioxidant, and toxic activity, and the presence of heavy metals, and was successfully applied to the analysis of river water samples, showing potential applicability for environmental analyses. The assay, which does not require advanced equipment, can be easily implemented in general laboratories equipped with basic cell culture facilities and a luminometer.
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Boamah GA, Huang Z, Shen Y, Lu Y, Wang Z, Su Y, Xu C, Luo X, Ke C, You W. Transcriptome analysis reveals fluid shear stress (FSS) and atherosclerosis pathway as a candidate molecular mechanism of short-term low salinity stress tolerance in abalone. BMC Genomics 2022; 23:392. [PMID: 35606721 PMCID: PMC9128277 DOI: 10.1186/s12864-022-08611-8] [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: 01/17/2022] [Accepted: 05/09/2022] [Indexed: 12/02/2022] Open
Abstract
Background Transcriptome sequencing is an effective tool to reveal the essential genes and pathways underlying countless biotic and abiotic stress adaptation mechanisms. Although severely challenged by diverse environmental conditions, the Pacific abalone Haliotis discus hannai remains a high-value aquaculture mollusk and a Chinese predominantly cultured abalone species. Salinity is one of such environmental factors whose fluctuation could significantly affect the abalone’s cellular and molecular immune responses and result in high mortality and reduced growth rate during prolonged exposure. Meanwhile, hybrids have shown superiority in tolerating diverse environmental stresses over their purebred counterparts and have gained admiration in the Chinese abalone aquaculture industry. The objective of this study was to investigate the molecular and cellular mechanisms of low salinity adaptation in abalone. Therefore, this study used transcriptome analysis of the gill tissues and flow cytometric analysis of hemolymph of H. discus hannai (DD) and interspecific hybrid H. discus hannai ♀ x H. fulgens ♂ (DF) during low salinity exposure. Also, the survival and growth rate of the species under various salinities were assessed. Results The transcriptome data revealed that the differentially expressed genes (DEGs) were significantly enriched on the fluid shear stress and atherosclerosis (FSS) pathway. Meanwhile, the expression profiles of some essential genes involved in this pathway suggest that abalone significantly up-regulated calmodulin-4 (CaM-4) and heat-shock protein90 (HSP90), and significantly down-regulated tumor necrosis factor (TNF), bone morphogenetic protein-4 (BMP-4), and nuclear factor kappa B (NF-kB). Also, the hybrid DF showed significantly higher and sustained expression of CaM and HSP90, significantly higher phagocytosis, significantly lower hemocyte mortality, and significantly higher survival at low salinity, suggesting a more active molecular and hemocyte-mediated immune response and a more efficient capacity to tolerate low salinity than DD. Conclusions Our study argues that the abalone CaM gene might be necessary to maintain ion equilibrium while HSP90 can offset the adverse changes caused by low salinity, thereby preventing damage to gill epithelial cells (ECs). The data reveal a potential molecular mechanism by which abalone responds to low salinity and confirms that hybridization could be a method for breeding more stress-resilient aquatic species. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08611-8.
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Affiliation(s)
- Grace Afumwaa Boamah
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China.,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China.,College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Zekun Huang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China.,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China.,College of the Environment and Ecology, Xiamen University, 361102, Xiamen, PR China
| | - Yawei Shen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China.,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China.,College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Yisha Lu
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China.,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China.,College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Zhixuan Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China.,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China.,College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Ying Su
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China.,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China.,College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Changan Xu
- Third Institute of Oceanography, MNR, Xiamen, 361005, China
| | - Xuan Luo
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China.,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China.,College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Caihuan Ke
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China. .,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China. .,College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China.
| | - Weiwei You
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, People's Republic of China. .,Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, 361102, People's Republic of China. .,College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China.
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Wikan N, Hankittichai P, Thaklaewphan P, Potikanond S, Nimlamool W. Oxyresveratrol Inhibits TNF-α-Stimulated Cell Proliferation in Human Immortalized Keratinocytes (HaCaT) by Suppressing AKT Activation. Pharmaceutics 2021; 14:63. [PMID: 35056961 PMCID: PMC8781909 DOI: 10.3390/pharmaceutics14010063] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/23/2021] [Accepted: 12/23/2021] [Indexed: 12/17/2022] Open
Abstract
Psoriasis is a complex inflammatory disease characterized by hyperproliferative keratinocyte caused by active PI3K/AKT signaling. TNF-α concentrated in the psoriatic lesions stimulates AKT activation. We previously discovered that oxyresveratrol inhibited inflammation via suppressing AKT phosphorylation, therefore oxyresveratrol may possess a conserved property to block AKT activation and proliferation in keratinocyte in response to TNF-α. Our current study proved that oxyresveratrol exhibited potent anti-proliferative effects against TNF-α. These effects are explained by the findings that oxyresveratrol could potentially inhibit TNF-α-stimulated AKT and GSK3-β activation in a dose-dependent manner, and its inhibitory pattern was comparable to that of a specific PI3K inhibitor. Results from immunofluorescence supported that oxyresveratrol effectively inhibited AKT and GSK3-β activation in individual cells upon TNF-α stimulation. Furthermore, functional assay confirmed that oxyresveratrol repressed the expansion of the HaCaT colony over 3 days, and this was caused by the ability of oxyresveratrol to induce cell cycle arrest at S and G2/M phases and the reduction in the expression of a proliferative marker (Ki-67) and a survival marker (MCL-1). Given the importance of TNF-α and the PI3K/AKT pathway in the psoriatic phenotype, we anticipate that oxyresveratrol, which targets the TNF-α-stimulated PI3K/AKT pathway, would represent a promising psoriasis therapy in the near future.
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Affiliation(s)
- Nitwara Wikan
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (P.H.); (P.T.); (S.P.)
| | - Phateep Hankittichai
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (P.H.); (P.T.); (S.P.)
| | - Phatarawat Thaklaewphan
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (P.H.); (P.T.); (S.P.)
| | - Saranyapin Potikanond
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (P.H.); (P.T.); (S.P.)
- Research Center for Development of Local Lanna Rice and Rice Products, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wutigri Nimlamool
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (P.H.); (P.T.); (S.P.)
- Research Center for Development of Local Lanna Rice and Rice Products, Chiang Mai University, Chiang Mai 50200, Thailand
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Yamamoto T, Suzuki S, Fujii T, Mima Y, Watanabe K, Matsumoto M, Nakamura M, Fujita N. Efficacy of hyaluronic acid on intervertebral disc inflammation: An in vitro study using notochordal cell lines and human disc cells. J Orthop Res 2021; 39:2197-2208. [PMID: 33251629 DOI: 10.1002/jor.24933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 11/09/2020] [Accepted: 11/25/2020] [Indexed: 02/04/2023]
Abstract
Hyaluronic acid (HA) is widely recognized as a therapeutic target and currently used in medicine. However, HA metabolism during intervertebral disc degeneration (IVDD) has not been completely elucidated. This study aimed to evaluate the efficacy of HA on intervertebral disc (IVD) inflammation and identify the main molecules modulating HA degradation in IVDs. To assess HA function in IVD cells in vitro, we treated human disc cells and U-CH1-N cells, a notochordal nucleus pulposus cell line, with HA or hyaluronidase. Real-time reverse transcription polymerase chain reaction (RT-PCR) and Western blot analysis showed that tumor necrosis factor alpha (TNF-α)-mediated induction of the expression of TNF-α and cyclooxygenase-2 (COX2) was clearly neutralized by HA treatment, and the expression of TNF-α and COX2 was significantly induced by hyaluronidase treatment in both cell types. Additionally, Western blot analysis showed that hyaluronidase-induced phosphorylation of p38 and Erk1/2, and that TNF-α-mediated phosphorylation of p38 and Erk1/2 was clearly reduced by HA addition. In degenerating human IVD samples, immunohistochemistry for hyaluronidase showed that the expression of hyaluronidases including HYAL1, HYAL2, and cell migration-inducing protein (CEMIP) tended to increase in accordance with IVDD. In particular, HYAL1 showed statistically significant differences. In vitro study also confirmed a similar phenomenon that TNF-α treatment increased both messenger RNA and protein expression in both cell types. Our results demonstrated that HA could potentially suppress IVDD by regulating p38 and Erk1/2 pathways, and that the expression of HYAL1 was correlated with IVDD progression. These findings indicated that HYAL1 would be a potential molecular target for suppressing IVDD by controlling HA metabolism.
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Affiliation(s)
- Tatsuya Yamamoto
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan
| | - Satoshi Suzuki
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan
| | - Takeshi Fujii
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.,Department of Orthopaedic Surgery, Saiseikai Yokohamashi Tobu Hospital, Kanagawa, Japan
| | - Yuichiro Mima
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.,Department of Orthopaedic Surgery, Kawasaki Municipal Hospital, Kanagawa, Japan
| | - Kota Watanabe
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan
| | - Morio Matsumoto
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan
| | - Masaya Nakamura
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan
| | - Nobuyuki Fujita
- Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.,Department of Orthopaedic Surgery, Fujita Health University, Toyoake, Aichi, Japan
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12
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Pimentel PMDO, de Assis DRR, Gualdrón-Lopez M, Barroso A, Brant F, Leite PG, de Lima Oliveira BC, Esper L, McKinnie SMK, Vederas JC, do Nascimento Cordeiro M, Dos Reis PVM, Teixeira MM, de Castro Pimenta AM, Borges MH, de Lima ME, Machado FS. Tityus serrulatus scorpion venom as a potential drug source for Chagas' disease: Trypanocidal and immunomodulatory activity. Clin Immunol 2021; 226:108713. [PMID: 33711450 DOI: 10.1016/j.clim.2021.108713] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 01/19/2021] [Accepted: 03/06/2021] [Indexed: 11/19/2022]
Abstract
Current chemical therapies for Chagas Disease (CD) lack ability to clear Trypanosoma cruzi (Tc) parasites and cause severe side effects, making search for new strategies extremely necessary. We evaluated the action of Tityus serrulatus venom (TsV) components during Tc infection. TsV treatment increased nitric oxide and pro-inflammatory cytokine production by Tc-infected macrophages (MØ), decreased intracellular parasite replication and trypomastigotes release, also triggering ERK1/2, JNK1/2 and p38 activation. Ts7 demonstrated the highest anti-Tc activity, inducing high levels of TNF and IL-6 in infected MØ. TsV/Ts7 presented synergistic effect on p38 activation when incubated with Tc antigen. KPP-treatment of MØ also decreased trypomastigotes releasing, partially due to p38 activation. TsV/Ts7-pre-incubation of Tc demonstrated a direct effect on parasite decreasing MØ-trypomastigotes releasing. In vivo KPP-treatment of Tc-infected mice resulted in decreased parasitemia. Summarizing, this study opens perspectives for new bioactive molecules as CD-therapeutic treatment, demonstrating the TsV/Ts7/KPP-trypanocidal and immunomodulatory activity during Tc infection.
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Affiliation(s)
| | - Diego Rodney Rodrigues de Assis
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Melisa Gualdrón-Lopez
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Andréia Barroso
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Program in Health Sciences: Infectious Diseases and Tropical Medicine/Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fátima Brant
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Program in Health Sciences: Infectious Diseases and Tropical Medicine/Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Paulo Gaio Leite
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Bruno Cabral de Lima Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lisia Esper
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Program in Health Sciences: Infectious Diseases and Tropical Medicine/Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Shaun M K McKinnie
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada; Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, USA
| | - John C Vederas
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | | | - Pablo Victor Mendes Dos Reis
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Program in Health Sciences: Infectious Diseases and Tropical Medicine/Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Adriano Monteiro de Castro Pimenta
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Maria Elena de Lima
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Santa Casa BH: Instituto de Ensino e Pesquisa, Belo Horizonte, Brazil
| | - Fabiana Simão Machado
- Department of Biochemistry and Immunology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Program in Health Sciences: Infectious Diseases and Tropical Medicine/Interdisciplinary Laboratory of Medical Investigation, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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13
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Deng Y, Gao X, Feng T, Wang Z, Xiao W, Xiong Z, Zhao L. Systematically characterized mechanism of treatment for lumbar disc herniation based on Yaobitong capsule ingredient analysis in rat plasma and its network pharmacology strategy by UPLC-MS/MS. JOURNAL OF ETHNOPHARMACOLOGY 2020; 260:113097. [PMID: 32531413 DOI: 10.1016/j.jep.2020.113097] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/06/2020] [Accepted: 06/06/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Yaobitong capsule (YBTC) was a traditional Chinese medicine (TCM) and it had clinically used to treat lumbar disc degeneration (LDH) for a long time. However, the active ingredients of YBTC absorption into the plasma and its pharmacological mechanism of treatment for LDH still remained unclear. AIM OF THE STUDY In this study, our research committed to identify the absorbed active ingredients of YBTC in rat plasma, and it may be a potential mechanism of action on LDH by the biological targets regulating related pathways. MATERIALS AND METHODS An ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was established to identify the absorption components and metabolites of YBTC in rat plasma, and the network pharmacology was further investigated to illuminate its potential mechanism of treatment for LDH by the biological targets regulating related pathways. RESULTS The network analysis found that 56 components were identified as its main active ingredients including ginsenoside Rg1, ginsenoside Rb1, senkyunolide H, and tetrahydropalmatine, etc. Combining with biological process, cellular component and molecular functions of GO, and kyotoencyclopedia of genes and genomes pathway enrichment analysis to perform network topology analysis on core targets. These active ingredients regulated 29 mainly pathways by 87 direct target genes including MAPK, Ras, PI3K-Akt, and NF-kappa B signaling pathway, etc. CONCLUSION: In this study, the absorption active ingredients of YBTC in rat plasma were firstly combined with the network pharmacology investigation to elucidate its biological mechanism of treatment for LDH in vivo. It inhibited excessive inflammatory reactions, thereby reducing the sensitivity of the nerves to reduce pain and relieve LDH, and potential medicine targets could be identified to clarify the molecular mechanism of YBTCs' regulation of LDH.
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Affiliation(s)
- Yajie Deng
- School of Pharmacy, Shenyang Pharmaceutical University, Benxi, 117004, China.
| | - Xun Gao
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening and Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China.
| | - Tiantian Feng
- School of Pharmacy, Shenyang Pharmaceutical University, Benxi, 117004, China.
| | - Zhenzhong Wang
- Jiangsu Kanion Parmaceutical CO. LTD, Jiangsu, Lianyungang, 222001, China.
| | - Wei Xiao
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, 222001, Jiangsu Lianyungang, China.
| | - Zhili Xiong
- School of Pharmacy, Shenyang Pharmaceutical University, Benxi, 117004, China.
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Benxi, 117004, China.
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14
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Zhao Z, Zheng J, Ye Y, Zhao K, Wang R, Wang R. MicroRNA‑25‑3p regulates human nucleus pulposus cell proliferation and apoptosis in intervertebral disc degeneration by targeting Bim. Mol Med Rep 2020; 22:3621-3628. [PMID: 32901887 PMCID: PMC7533515 DOI: 10.3892/mmr.2020.11483] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 02/25/2020] [Indexed: 12/22/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is a degenerative disease of the spine originating from the intervertebral disc. MicroRNAs (miRNAs or miRs) are a group of endogenous small non‑coding RNAs that act on target genes and play a critical role in numerous biological processes. However, the underlying mechanism of miR‑25‑3p in IDD remains unclear. Therefore, the present study aimed to explore the role of miR‑25‑3p in the pathogenesis of IDD. The results demonstrated that miR‑25‑3p was downregulated in rat degenerative nucleus pulposus (NP) cells and that Bcl‑2 interacting mediator of cell death (Bim) was a direct target of miR‑25‑3p. Next, to investigate the effect of miR‑25‑3p on normal NP cell proliferation and apoptosis, NP cells were transfected with an miR‑25‑3p inhibitor, a negative control of miR‑25‑3p inhibitor, miR‑25‑3p inhibitor + control‑small interference RNA (siRNA) or miR‑25‑3p inhibitor + Bim‑siRNA for 48 h and cell proliferation and apoptosis were then analyzed. The results demonstrated that the miR‑25‑3p inhibitor could decrease NP cell proliferation and induce cell apoptosis, and these effects were reversed by Bim‑siRNA. In addition, an in vitro cell model of IDD was established by subjecting NP cells to 10 ng/ml interleukin (IL)‑1β for 24 h. Further experiments suggested that IL‑1β treatment induced a reduction in NP cell proliferation and an increase in cell apoptosis, which were prevented by the miR‑25‑3p mimic. All the effects of miR‑25‑3p mimic on IL‑1β‑treated NP cells were significantly reversed by Bim upregulation. These findings suggested that miR‑25‑3p may be a novel therapeutic target for IDD prevention.
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Affiliation(s)
- Zhifang Zhao
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Jie Zheng
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Youchen Ye
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Kefeng Zhao
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Ruozhang Wang
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Ran Wang
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
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15
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Qu Z, Zhang F, Chen W, Lin T, Sun Y. High-dose TGF-β1 degrades human nucleus pulposus cells via ALK1-Smad1/5/8 activation. Exp Ther Med 2020; 20:3661-3668. [PMID: 32855718 PMCID: PMC7444386 DOI: 10.3892/etm.2020.9088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 07/01/2020] [Indexed: 01/07/2023] Open
Abstract
Transforming growth factor β1 (TGF-β1) can promote the proliferation and differentiation of intervertebral disc cells and participates in its repair process. However, whether TGF-β1 engages in the process of disc degeneration has not yet been fully elucidated. The present study aimed to investigate the function of high-dose TGF-β1 on the metabolism of nucleus pulposus cells (NPCs). TGF-β1 levels in human degenerative intervertebral disc tissues and tumor necrosis factor (TNF)-α-induced degenerative NPCs were analyzed. Furthermore, NPCs were treated with TGF-β1 and inhibitors of TGF-β1 receptors [ALK tyrosine kinase receptor (ALK) 1 and ALK5] to determine the effect of the receptors in the mediation of NPC degeneration. The NPC state was determined by the components of secretory collagen I/II, tissue inhibitor of metalloproteinase-3 (TIMP-3) and matrix metalloproteinase (MMP)-13. The mRNA expression of Smad1/2/3/5/8, the downstream gene of TGF-β1 mediated by ALK, was also measured. Results showed that TGF-β1 and ALK1 were positively associated with the degree of degeneration of NP or NPCs in vitro, but negatively associated with ALK5. Furthermore, high-doses of TGF-β1 suppressed collagen II, but enhanced collagen I, TIMP-3, MMP-13, ALK1/5 and Smad1/2/3/5/8 expression. ALK5 inhibition induced the suppression of Smad2/3 and aggravated high-dose TGF-β1-induced NPC degeneration, as shown by the reduction in collagen II and increase in collagen I, TIMP-3 and MMP-13. By contrast, ALK1 inhibition resulted in Smad1/5/8 suppression and alleviated high-dose TGF-β1-induced NPC degeneration. Taken together, it was concluded that high-doses of TGF-β1 contributed to the degeneration of NPCs via the upregulation of ALK1 and Smad1/5/8.
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Affiliation(s)
- Zhiqiang Qu
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China.,Department of Orthopedics, Tongliao City Hospital, Tongliao, Inner Mongolia 028000, P.R. China
| | - Fengxiang Zhang
- Department of General Surgery, Tongliao City Hospital, Tongliao, Inner Mongolia 028000, P.R. China
| | - Weiwei Chen
- Department of Disinfecting Supply Division, Tongliao City Hospital, Tongliao, Inner Mongolia 028000, P.R. China
| | - Tao Lin
- Department of Disinfecting Supply Division, Tongliao City Hospital, Tongliao, Inner Mongolia 028000, P.R. China
| | - Yongming Sun
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
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16
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Wang Y, Che M, Xin J, Zheng Z, Li J, Zhang S. The role of IL-1β and TNF-α in intervertebral disc degeneration. Biomed Pharmacother 2020; 131:110660. [PMID: 32853910 DOI: 10.1016/j.biopha.2020.110660] [Citation(s) in RCA: 267] [Impact Index Per Article: 66.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/10/2020] [Accepted: 08/17/2020] [Indexed: 12/20/2022] Open
Abstract
Low back pain (LBP), a prevalent and costly disease around the world, is predominantly caused by intervertebral disc (IVD) degeneration (IDD). LBP also presents a substantial burden to public health and the economy. IDD is mainly caused by aging, trauma, genetic susceptibility, and other factors. It is closely associated with changes in tissue structure and function, including progressive destruction of the extracellular matrix (ECM), enhanced senescence, disc cell death, and impairment of tissue biomechanical function. The inflammatory process, exacerbated by cytokines interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α), are considered to be the key mediators of IDD and LBP. IL-1β and TNF-α are the most important proinflammatory cytokines, as they have powerful proinflammatory activities and can promote the secretion of a variety of proinflammatory mediators. They are also upregulated in the degenerative IVDs, and they are closely related to various pathological IDD processes, including inflammatory response, matrix destruction, cellular senescence, autophagy, apoptosis, pyroptosis, and proliferation. Therefore, anti-IL-1β and anti-TNF-α therapies may have the potential to alleviate disc degeneration and LBP. In this paper, we reviewed the expression pattern and signal transduction pathways of IL-1β and TNF-α, and we primarily focused on their similar and different roles in IDD. Because IL-1β and TNF-α inhibition have the potential to alleviate IDD, an in-depth understanding of the role of IL-1β and TNF-α in IDD will benefit the development of new treatment methods for disc degeneration with IL-1β and TNF-α at the core.
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Affiliation(s)
- Yongjie Wang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Mingxue Che
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Jingguo Xin
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Zhi Zheng
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Jiangbi Li
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Shaokun Zhang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China.
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A lncRNA landscape in breast cancer reveals a potential role for AC009283.1 in proliferation and apoptosis in HER2-enriched subtype. Sci Rep 2020; 10:13146. [PMID: 32753692 PMCID: PMC7403317 DOI: 10.1038/s41598-020-69905-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 07/19/2020] [Indexed: 12/23/2022] Open
Abstract
Breast cancer is the most commonly diagnosed neoplasm in women worldwide with a well-recognized heterogeneous pathology, classified into four molecular subtypes: Luminal A, Luminal B, HER2-enriched and Basal-like, each one with different biological and clinical characteristics. Long non-coding RNAs (lncRNAs) represent 33% of the human transcriptome and play critical roles in breast carcinogenesis, but most of their functions are still unknown. Therefore, cancer research could benefit from continued exploration into the biology of lncRNAs in this neoplasm. We characterized lncRNA expression portraits in 74 breast tumors belonging to the four molecular subtypes using transcriptome microarrays. To infer the biological role of the deregulated lncRNAs in the molecular subtypes, we performed co-expression analysis of lncRNA-mRNA and gene ontology analysis. We identified 307 deregulated lncRNAs in tumor compared to normal tissue and 354 deregulated lncRNAs among the different molecular subtypes. Through co-expression analysis between lncRNAs and protein-coding genes, along with gene enrichment analysis, we inferred the potential function of the most deregulated lncRNAs in each molecular subtype, and independently validated our results taking advantage of TCGA data. Overexpression of the AC009283.1 was observed in the HER2-enriched subtype and it is localized in an amplification zone at chromosome 17q12, suggesting it to be a potential tumorigenic lncRNA. The functional role of lncRNA AC009283.1 was examined through loss of function assays in vitro and determining its impact on global gene expression. These studies revealed that AC009283.1 regulates genes involved in proliferation, cell cycle and apoptosis in a HER2 cellular model. We further confirmed these findings through ssGSEA and CEMITool analysis in an independent HER2-amplified breast cancer cohort. Our findings suggest a wide range of biological functions for lncRNAs in each breast cancer molecular subtype and provide a basis for their biological and functional study, as was conducted for AC009283.1, showing it to be a potential regulator of proliferation and apoptosis in the HER2-enriched subtype.
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18
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Zheng Y, Liu Z, Wang L, Li M, Zhang Y, Zong Y, Li Y, Song L. A novel tumor necrosis factor in the Pacific oyster Crassostrea gigas mediates the antibacterial response by triggering the synthesis of lysozyme and nitric oxide. FISH & SHELLFISH IMMUNOLOGY 2020; 98:334-341. [PMID: 31881330 DOI: 10.1016/j.fsi.2019.12.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 12/19/2019] [Accepted: 12/23/2019] [Indexed: 06/10/2023]
Abstract
Tumor necrosis factors (TNFs) are a group of multifunctional inflammatory cytokines involved in various pathological and immune processes. Recently, a few primitive TNFs have been characterized from molluscs, which play important roles in modulating cell apoptosis, phagocytosis and production of immune-related enzymes. In the present study, a novel TNF (named as CgTNF-2) with the activity to mediate antibacterial response was identified from the Pacific oyster Crassostrea gigas. The open reading frame of CgTNF-2 was of 783 bp encoding a putative polypeptide of 261 amino acids with a typical TNF domain. The deduced amino acid sequence of CgTNF-2 shared high identity with that of TNFs previously identified from other molluscs, such as 96.1% identity with that in oyster C. hongkongensis, 33.7% identity with that in scallop Mizuhopecten yessoensis and 33.0% identity with CgTNF-1 in oyster C. gigas. There were two distinct TNF branches of vertebrate and invertebrate in the phylogenetic tree, and CgTNF-2 was firstly clustered with TNF-14 from C. hongkongensis, and then clustered with other molluscan TNFs. The mRNA transcripts of CgTNF-2 were widely expressed in various oyster tissues, with the highest expression level in hemocytes. The expression level of CgTNF-2 increased significantly at 6 h (2.45-fold and 6.20-fold, respectively, p < 0.05) after peptidoglycan and lipopolysaccharides treatments, and peaked at 12 h (31.86-fold and 7.90-fold, respectively, p < 0.05). The recombinant protein of CgTNF-2 (rCgTNF-2) inhibited the growth of human alveolar basal epithelial (A549) cells at a concentration of 800 ng/mL. After the oysters received an injection of rCgTNF-2, the serum from those oysters exhibited significantly higher antibacterial activity compared to that from control group, evidenced by inhibiting the growth of Vibrio splendidus. Moreover, the lysozyme activity as well as the contents of nitric oxide in the oyster serum also increased significantly. The above results collectively suggested that CgTNF-2 was a novel member of bivalve TNF-α family, which could prompt the antibacterial activity by inducing the lysozyme activity and the production of nitric oxide in the innate immune response of oyster.
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Affiliation(s)
- Yan Zheng
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Zhaoqun Liu
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Functional Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Functional Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China.
| | - Meijia Li
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Yukun Zhang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Yanan Zong
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Yinan Li
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Functional Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
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Yao M, Zhang J, Li Z, Guo S, Zhou X, Zhang W. Marein protects human nucleus pulposus cells against high glucose-induced injury and extracellular matrix degradation at least partly by inhibition of ROS/NF-κB pathway. Int Immunopharmacol 2020; 80:106126. [PMID: 31931363 DOI: 10.1016/j.intimp.2019.106126] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/12/2019] [Accepted: 12/14/2019] [Indexed: 02/07/2023]
Abstract
Intervertebral disc degeneration (IDD), a major cause of discogenic low back pain, is a musculoskeletal disorder involving the apoptosis of nucleus pulposus cells (NPCs) and extracellular matrix (ECM) degradation. Marein is a major active flavonoid ingredient extracted from the hypoglycemic plant Coreopsis tinctoria with several beneficial biological activities including anti-diabetic effects. Nevertheless, there are no reports concerning the effects of marein on IDD. Our study aimed to evaluate the effects of marein on high glucose (HG)-induced injury and ECM degradation in human NPCs (HNPCs). CCK-8 assay was applied to evaluate cell viability. Flow cytometry analysis, a cell death detection ELISA, and caspase-3 activity assay were used to assess apoptosis. The mRNA expression of ECM-related proteins matrix metalloproteinase (MMP)-3, MMP-13, Collagen II, and aggrecan were determined by qRT-PCR. The changes of the nuclear factor-kappa B (NF-κB) pathway were examined by western blot. Stimulation with HG significantly reduced cell viability and induced apoptosis in HNPCs. Moreover, HG exposure increased MMP-3 and MMP-13 expression and decreased Collagen II and aggrecan expression in HNPCs. Notably, marein effectively alleviated HG-induced viability reduction, apoptosis and ECM degradation in HNPCs. We also found that marein inhibited HG-induced ROS generation and NF-κB activation in HNPCs. Inhibition of NF-κB pathway reinforced HG-induced injury and ECM degradation in HNPCs. In summary, marein protected HNPCs against HG-induced injury and ECM degradation at least partly by inhibiting the ROS/NF-κB pathway.
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Affiliation(s)
- Mingyan Yao
- Department of Endocrinology, Baoding No. 1 Central Hospital, Baoding 071000, China
| | - Jing Zhang
- Deparment of Cardiology, Affiliated Hospital of Hebei University, Baoding 071000, China
| | - Zhihong Li
- Department of Endocrinology, Baoding No. 1 Central Hospital, Baoding 071000, China.
| | - Shuqin Guo
- Department of Endocrinology, Baoding No. 1 Central Hospital, Baoding 071000, China
| | - Xue Zhou
- Department of Endocrinology, Baoding No. 1 Central Hospital, Baoding 071000, China
| | - Wenjing Zhang
- Department of Cardiology, Baoding Children's Hospital, Baoding 071051, China
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Cancer Conditioned Medium Modulates Functional and Phenotypic Properties of Human Decidua Parietalis Mesenchymal Stem/Stromal Cells. Tissue Eng Regen Med 2019; 16:615-630. [PMID: 31824824 DOI: 10.1007/s13770-019-00207-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 06/17/2019] [Accepted: 07/16/2019] [Indexed: 12/12/2022] Open
Abstract
Background Mesenchymal Stem/Stromal Cells (MSCs) from the decidua parietalis (DPMSCs) of human term placenta express several molecules with important biological and immunological properties. DPMSCs induce natural killer cell expression of inflammatory receptors and their cytotoxic activity against cancer cells. These properties make DPMSCs promising therapeutical agent for cancer. The successful development of MSCs as an anti-cancer therapeutic cells rely on their ability to function in a hostile inflammatory and oxidative stress cancer environment. Here, we studied the effects of conditioned medium obtained from the culture of breast cancer cells (CMMDA-231) on the functional and phenotypic properties of DPMSCs. Methods DPMSCs were cultured with CMMDA-231 and important functions of DPMSCs were measured. The effect of CMMDA-231 on DPMSC expression of several genes with different functions was also evaluated. Results DPMSCs were able to function in response to CMMDA-231, but with reduced proliferative and adhesive potentials. Preconditioning of DPMSCs with CMMDA-231 enhanced their adhesion while reducing their invasion. In addition, CMMDA-231 modulated DPMSC expression of many genes with various functional (i.e., proliferation, adhesion, and invasion) properties. DPMSCs also showed increased expression of genes with anti-cancer property. Conclusion These data show the ability of DPMSCs to survive and function in cancer environment. In addition, preconditioning of DPMSCs with CMMDA-231 enhanced their anti-cancer properties and thus demonstrating their potential as an anti-cancer therapeutic agent. However, future studies are essential to reveal the mechanism underlying the effects of MDA-231 on DPMSC functional activities and also to confirm the anti-cancer therapeutic potential of DPMSCs.
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Xu S, Liu C, Xie F, Tian L, Manno SH, Manno FAM, Fallah S, Pelster B, Tse G, Cheng SH. Excessive inflammation impairs heart regeneration in zebrafish breakdance mutant after cryoinjury. FISH & SHELLFISH IMMUNOLOGY 2019; 89:117-126. [PMID: 30928664 DOI: 10.1016/j.fsi.2019.03.058] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/18/2019] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
Inflammation plays a crucial role in cardiac regeneration. Numerous advantages, including a robust regenerative ability, make the zebrafish a popular model to study cardiovascular diseases. The zebrafish breakdance (bre) mutant shares several key features with human long QT syndrome that predisposes to ventricular arrhythmias and sudden death. However, how inflammatory response and tissue regeneration following cardiac damage occur in bre mutant is unknown. Here, we have found that inflammatory response related genes were markedly expressed in the injured heart and excessive leukocyte accumulation occurred in the injured area of the bre mutant zebrafish. Furthermore, bre mutant zebrafish exhibited aberrant apoptosis and impaired heart regenerative ability after ventricular cryoinjury. Mild dosages of anti-inflammatory or prokinetic drugs protected regenerative cells from undergoing aberrant apoptosis and promoted heart regeneration in bre mutant zebrafish. We propose that immune or prokinetic therapy could be a potential therapeutic regimen for patients with genetic long QT syndrome who suffers from myocardial infarction.
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Affiliation(s)
- Shisan Xu
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Science, City University of Hong Kong, Hong Kong SAR, PR China
| | - Chichi Liu
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Science, City University of Hong Kong, Hong Kong SAR, PR China
| | - Fangjing Xie
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Science, City University of Hong Kong, Hong Kong SAR, PR China
| | - Li Tian
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Science, City University of Hong Kong, Hong Kong SAR, PR China
| | - Sinai Hc Manno
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Science, City University of Hong Kong, Hong Kong SAR, PR China
| | - Francis A M Manno
- Department of Physics, College of Science and Engineering, City University of Hong Kong, Hong Kong SAR, PR China
| | - Samane Fallah
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Science, City University of Hong Kong, Hong Kong SAR, PR China
| | - Bernd Pelster
- Institut für Zoologie, Universität Innsbruck, Center for Molecular Biosciences, Universität Innsbruck, Innsbruck, Austria.
| | - Gary Tse
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, PR China; Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, PR China; Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, PR China.
| | - Shuk Han Cheng
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Science, City University of Hong Kong, Hong Kong SAR, PR China; State Key Laboratory of Marine Pollution (SKLMP) at City University of Hong Kong, Hong Kong SAR, PR China; Department of Materials Science and Engineering, College of Science and Engineering, City University of Hong Kong, Hong Kong SAR, PR China.
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22
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Chen L, Xie ZY, Liu L, Zhu L, Wang F, Fan P, Sinkemani A, Zhang C, Hong X, Wu XT. Nuclear factor-kappa B-dependent X-box binding protein 1 signalling promotes the proliferation of nucleus pulposus cells under tumour necrosis factor alpha stimulation. Cell Prolif 2018; 52:e12542. [PMID: 30430692 PMCID: PMC6496019 DOI: 10.1111/cpr.12542] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 08/27/2018] [Accepted: 09/19/2018] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES Tumour necrosis factor alpha (TNF-α) expressed by nucleus pulposus cells (NPCs) plays a critical role in intervertebral disc (IVD) degeneration. A key unfolded protein response (UPR) component, X-box binding protein 1 (XBP1) and nuclear factor-kappa B (NF-κB) are essential for cell survival and proliferation. The aim of our study was to elucidate the roles of XBP1 and NF-κB in IVD degeneration (IDD). MATERIALS AND METHODS Rat NPCs were cultured with TNF-α in the presence or absence of XBP1 and NF-κB-p65 small interfering RNA. The associated genes and proteins were evaluated through quantitative real-time PCR, Western blot analyses and immunofluorescence staining to monitor UPR and NF-κB signalling and identify the regulatory mechanism of p65 by XBP1. Cell counting kit-8 assay, cell cycle analysis and related gene and protein expression were performed to examine the proliferation of NPCs. RESULTS The acute exposure of TNF-α accelerated the proliferation of rat NPCs by activating the UPR/XBP1 pathway. XBP1 signalling favoured the phosphorylation and nuclear translocation of p65 subunit of NF-κB. The activation of NF-κB in the later phase also enhanced NPC proliferation. CONCLUSIONS Unfolded protein response reinforces the survival and proliferation of NPCs under TNF-α stimulation by activating the XBP1 pathway, and NF-κB serves as a vital mediator in these events. The XBP1 signalling of UPR can be a novel therapeutic target in IDD.
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Affiliation(s)
- Lu Chen
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Zhi-Yang Xie
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Lei Liu
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Lei Zhu
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Feng Wang
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Pan Fan
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Arjun Sinkemani
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Cong Zhang
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Xin Hong
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Xiao-Tao Wu
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
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Chen L, Liu L, Xie ZY, Wang F, Sinkemani A, Zhang C, Wang XH, Wang K, Hong X, Wu XT. Endoplasmic Reticulum Stress Facilitates the Survival and Proliferation of Nucleus Pulposus Cells in TNF-α Stimulus by Activating Unfolded Protein Response. DNA Cell Biol 2018; 37:347-358. [PMID: 29381432 DOI: 10.1089/dna.2017.4029] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Intervertebral disc (IVD) degeneration is closely related to inflammatory cytokines, such as tumor necrosis factor alpha (TNF-α). The endoplasmic reticulum (ER) serves several important cell functions, which are essential for normal cell metabolism and survival. This study aims to clarify the role of ER stress and unfolded protein response (UPR) in TNF-α-induced biological changes in rat nucleus pulposus cells (NPCs) and IVD degeneration. In our research, rat NPCs were cultured with different concentrations of TNF-α in the presence or absence of ER stress inhibitors. Related genes and proteins were measured by immunofluorescence staining, quantitative real-time PCR, and Western blot analyses to monitor ER stress. Cell proliferation was evaluated by CCK-8 assay and cyclin D1 expression. Apoptosis was detected by flow cytometry and Western blot analyses. Our results showed that TNF-α induced the apoptosis of some NPCs in the early stage and then accelerated the proliferation of surviving cells. In addition, TNF-α stimulus upregulated ER stress markers and initiated UPR. However, these effects could be reversed by inhibitors, thereby reducing cell proliferation and enhancing apoptosis. In conclusion, ER stress reinforces the survival and proliferation of NPCs in TNF-α stimulus by activating UPR signaling, which could be an important therapeutic target in the future.
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Affiliation(s)
- Lu Chen
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Lei Liu
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Zhi-Yang Xie
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Feng Wang
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Arjun Sinkemani
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Cong Zhang
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Xiao-Hu Wang
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Kun Wang
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Xin Hong
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Xiao-Tao Wu
- Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
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Lv F, Huang Y, Lv W, Yang L, Li F, Fan J, Sun J. MicroRNA-146a Ameliorates Inflammation via TRAF6/NF-κB Pathway in Intervertebral Disc Cells. Med Sci Monit 2017; 23:659-664. [PMID: 28161709 PMCID: PMC5308543 DOI: 10.12659/msm.898660] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background Intervertebral disc degeneration (IDD) has been widely recognized as a major contributor to low back pain. Accumulating evidence suggests that IDD is linked to various pro-inflammatory cytokines and metabolites. Recently, numerous studies have demonstrated that microRNAs (miRNAs) play a pivotal role in the development of most disorders, including degenerative disc diseases. Previous reports have revealed that miRNA-146a (miR-146a) could attenuate neuropathic pain in the spinal cord. The aim of this study was to investigate the role of miR-146a in the inflammatory response of IDD. Material/Methods Quantitative real-time (RT)-PCR was performed to investigate the levels of miR-146a in the PBMCs (peripheral blood mononuclear cells) of patients with IDD. Human nucleus pulposus (NP) cells were transiently transfected with miR-146a mimic; control NP cell transfections lacked miR-146a. Then all NP cells were treated with LPS (10 μM) to induce inflammation. The mRNA levels of miR-146a in NP cells were determined by RT-PCR. In addition, the mRNA and protein expression levels of tumor necrosis factor (TNF), receptor-associated factor 6 (TRAF6), and nuclear factor (NF)-κB in NP cells were evaluated by quantitative RT-PCR and Western blot analysis, respectively. Results We found that miR-146a was significantly downregulated in the PBMCs of patients. Moreover, overexpression of miR-146a significantly decreased the levels of pro-inflammatory cytokines in LPS-stimulated NP cells. The mRNA and protein levels of TRAF6 and NF-κB were downregulated by miR-146a overexpression. Conclusions These results suggest that overexpression of miR-146a could promote IDD through the TRAF/NF-κB pathway. Our findings also highlight miR-146a as a novel possible therapeutic target for IDD.
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Affiliation(s)
- Feng Lv
- Department of Spine Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland).,Department of Orthopedics, Shandong Energy Zibo Mining Group Co. Ltd. Central Hospital, Zibo, Shandong, China (mainland)
| | - Yingzi Huang
- Special Inspection Section, The Fifth People's Hospital of Zibo City, Zibo, Shandong, China (mainland)
| | - Wentao Lv
- Department of Orthopedics, The Sixth People's Hospital of Zibo City, Zibo, Shandong, China (mainland)
| | - Longbiao Yang
- Department of Orthopedics, Shandong Energy Zibo Mining Group Co. Ltd. Central Hospital, Zibo, Shandong, China (mainland)
| | - Feng Li
- Special Inspection Section, The Fifth People's Hospital of Zibo City, Zibo, Shandong, China (mainland)
| | - Jingli Fan
- Thyroid Disease Prevention and Control Center, ndemic Disease Control and Prevention Institute of Shandong Province, Jinan, Shandong, China (mainland)
| | - Jianmin Sun
- Department of Spine Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)
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Wang C, Yu X, Yan Y, Yang W, Zhang S, Xiang Y, Zhang J, Wang W. Tumor necrosis factor-α: a key contributor to intervertebral disc degeneration. Acta Biochim Biophys Sin (Shanghai) 2017; 49:1-13. [PMID: 27864283 DOI: 10.1093/abbs/gmw112] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/13/2016] [Indexed: 12/11/2022] Open
Abstract
Intervertebral disc (IVD) degeneration (IDD) is the most common cause leading to low back pain (LBP), which is a highly prevalent, costly, and crippling condition worldwide. Current treatments for IDD are limited to treat the symptoms and do not target the pathophysiology. Tumor necrosis factor-α (TNF-α) is one of the most potent pro-inflammatory cytokines and signals through its receptors TNFR1 and TNFR2. TNF-α is highly expressed in degenerative IVD tissues, and it is deeply involved in multiple pathological processes of disc degeneration, including matrix destruction, inflammatory responses, apoptosis, autophagy, and cell proliferation. Importantly, anti-TNF-α therapy has shown promise for mitigating disc degeneration and relieving LBP. In this review, following a brief description of TNF-α signal transduction, we mainly focus on the expression pattern and roles of TNF-α in IDD, and summarize the emerging progress regarding its inhibition as a promising biological therapeutic approach to disc degeneration and associated LBP. A better understanding will help to develop novel TNF-α-centered therapeutic interventions for degenerative disc disease.
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Affiliation(s)
- Cheng Wang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Xiaohua Yu
- Medical Research Center, University of South China, Hengyang 421001, China
| | - Yiguo Yan
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Wei Yang
- Department of Hand and Micro-surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Shujun Zhang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Yongxiao Xiang
- Department of Hand and Micro-surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Jian Zhang
- Department of Hand and Micro-surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Wenjun Wang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
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Cai F, Zhu L, Wang F, Shi R, Xie XH, Hong X, Wang XH, Wu XT. The Paracrine Effect of Degenerated Disc Cells on Healthy Human Nucleus Pulposus Cells Is Mediated by MAPK and NF-κB Pathways and Can Be Reduced by TGF-β1. DNA Cell Biol 2016; 36:143-158. [PMID: 28005398 DOI: 10.1089/dna.2016.3230] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Inflammation is thought to have a major role in the pathogenesis of disc degeneration. Studies have shown that nucleus pulposus cells (NPCs) respond to one or two specific cytokines by regulating cell proliferation or matrix synthesis. However, the effects of a cocktail of factors secreted by degenerated disc cells on transplanted exogenous healthy NPCs remain unknown. Concentrations of multiple cytokines in degenerated disc tissue-conditioned medium (dCM) were measured using enzyme-linked immunosorbent assay (ELISA). 3-(4, 5-Dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay and Ki67 immunofluorescence staining were used to evaluate the proliferation of cells in dCM. The function of exogenous NPCs cultured in dCM was evaluated by examining catabolic markers (ADAMTS-4, ADAMTS-5, MMP-1, MMP-3, and MMP-13), anabolic markers (TIMP-1, TIMP-2, and TIMP-3), and the extracellular matrix protein-aggrecan (ACAN) and collagen II (COL2)-expression with real time polymerase chain reaction (RT-PCR). Mitogen-activated protein kinase (MAPK) and nuclear factor-kappa B (NF-κB) pathway activation was observed using Western blotting. Finally, we examined the role of transforming growth factor (TGF)-β1 in reducing dCM-mediated exogenous NPC dysfunction. Levels of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-1α, IL-2, IL-4, IL-6, IL-8, IL-10, IL-17, interferon-γ (IFN-γ), and prostaglandin E2 (PGE2) were higher and TGF-β1 levels were lower in dCM compared with the control medium. Treatment with dCM increased the proliferation of healthy NPCs. NPCs exhibited significantly higher expression of ADAMTS-4, ADAMTS-5, MMP-1, MMP-3, and MMP-13 and decreased TIMP-2, ACAN, and COL2 expression in the dCM group in a dose- and time-dependent manner. Treatment with dCM moderately increased TIMP-1 expression and had no effect on TIMP-3 mRNA levels. The MAPK and NF-κB pathways were implicated in dCM-mediated responses of healthy NPCs. TGF-β1 partially reversed the dCM-mediated NPC dysfunction. Increased levels of inflammatory factors and decreased TGF-β1 levels in dCM suggest an inflammatory environment in degenerated disc tissue. The catabolic effect of dCM on human healthy NPCs is mediated by MAPK and NF-κB pathways and can be reduced by TGF-β1.
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Affiliation(s)
- Feng Cai
- 1 Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China .,2 Department of Orthopedics, The First Affiliated Hospital of Soochow University , Suzhou, China
| | - Lei Zhu
- 1 Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Feng Wang
- 1 Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Rui Shi
- 1 Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Xin-Hui Xie
- 1 Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Xin Hong
- 1 Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Xiao-Hu Wang
- 1 Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
| | - Xiao-Tao Wu
- 1 Department of Spine Surgery, Zhongda Hospital, School of Medicine, Southeast University , Nanjing, China
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Regulation of a disintegrins and metalloproteinase with thrombospondin motifs 7 during inflammation in nucleus pulposus (NP) cells: role of AP-1, Sp1 and NF-κB signaling. Inflamm Res 2016; 65:951-962. [PMID: 27516213 DOI: 10.1007/s00011-016-0978-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 07/12/2016] [Accepted: 08/06/2016] [Indexed: 12/31/2022] Open
Abstract
AIM The objective of this study is to explore the effect of inflammatory cytokines on a disintegrins and metalloproteinase with thrombospondin motifs 7 (ADAMTS7) and to demonstrate the role of Sp1, AP-1 and NF-κB signaling on the ADAMTS7 regulation during inflammation in NP cells. METHODS Real-time PCR was to detect the effect of ADAMTS7 knockdown on the expression of catabolic enzymes during inflammatory condition in NP cells. Real-time PCR, western blot, immunofluorescence and transfection experiments were used to observe the effect of tumor necrosis factor-α (TNF-α) or interleukin-1β on the expression and the activity of ADAMTS7, and demonstrated the role to Sp1, AP-1 and NF-κB in the regulation of ADAMTS7 during inflammation. RESULTS As other cells, ADAMTS7 knockdown suppressed the mRNA expression of catabolic factors during inflammation in human NP cells. However, the expression of ADAMTS7 mRNA and protein and the activity of ADAMTS7 promoter were refractory to inflammatory cytokines. In addition, Sp1, AP-1, not NF-κB signaling sustained the expression of ADAMTS7 mRNA, protein, as well as promoter activity during inflammation in NP cells. CONCLUSION ADAMTS7 played a crucial role in the expression of catabolic genes in the presence of TNF-α and AP-1, Sp1, not NF-κB signaling were critical for the maintenance of ADAMTS7 expression during inflammation in NP cells.
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Liu Z, Ma C, Shen J, Wang D, Hao J, Hu Z. SDF‑1/CXCR4 axis induces apoptosis of human degenerative nucleus pulposus cells via the NF‑κB pathway. Mol Med Rep 2016; 14:783-9. [PMID: 27220474 PMCID: PMC4918601 DOI: 10.3892/mmr.2016.5341] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 05/09/2016] [Indexed: 12/21/2022] Open
Abstract
Intervertebral disc degeneration (IVDD) is a major cause of lower back pain, and increased cell apoptosis is a key characteristic of IVDD. The present study aimed to investigate the effects and mechanism of the stromal cell-derived factor-1 (SDF-1)/C-X-C motif chemokine receptor 4 (CXCR4) axis on apoptosis in human degenerative nucleus pulposus cells (NPCs). The expression levels of SDF-1 and CXCR4 in human intervertebral discs (IVD) were determined using immunohistochemistry and western blot analysis. Apoptosis of primary cultured NPCs was quantified by Annexin V/propidium iodide staining following stimulation with SDF-1 and knockdown of CXCR4 using small interfering RNA (siRNA). The association with the nuclear factor-κB (NF-κB) signaling pathway was investigated using CXCR4-siRNA and NF-κB inhibitor, pyrrolidine dithiocarbamate (PDTC), treatment. The results demonstrated that SDF-1 and its receptor, CXCR4, were upregulated in degenerative IVD samples compared with normal samples. Stimulation with SDF-1 increased the level of apoptosis in cultured NPCs, and conversely, the apoptosis level was suppressed post-transfection with CXCR4 siRNA compared with SDF-1 stimulation alone. Furthermore, SDF-1 treatment increased the level of phosphorylated NF-κB subunit P65, which was downregulated following CXCR4 siRNA and PDTC treatment. In addition, CXCR4 siRNA and PDTC inhibited the nuclear translocation of P65, which was induced by SDF-1. Taken together, SDF-1-mediated apoptosis was suppressed by NF-κB inhibition using PDTC. In conclusion, the SDF-1/CXCR4 axis promoted cell apoptosis in human degenerative NPCs via the NF-κB pathway, thus suggesting that SDF-1/CXCR signaling may be a therapeutic target for the treatment of degenerative IVD diseases.
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Affiliation(s)
- Zongchao Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Chuan Ma
- Department of Orthopedic Surgery, The Traditional Chinese Medicine Affiliated Hospital of Sichuan Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Jieliang Shen
- Department of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Dawu Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Jie Hao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Zhenming Hu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
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MiR-138-5p promotes TNF-α-induced apoptosis in human intervertebral disc degeneration by targeting SIRT1 through PTEN/PI3K/Akt signaling. Exp Cell Res 2016; 345:199-205. [PMID: 27207584 DOI: 10.1016/j.yexcr.2016.05.011] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 04/08/2016] [Accepted: 05/15/2016] [Indexed: 12/22/2022]
Abstract
The role of apoptosis in the pathogenesis of intervertebral disc degeneration (IDD) remains enigmatic. Accumulating evidence has shown that the apoptotic machinery is regulated by miRNAs. The aim of this study was to evaluate the effect of miR-138-5p on apoptosis in human NP cells induced by TNF-α and to explore the mechanism of this process. The expression of miR-138-5p was determined in nucleus pulposus (NP) tissues from patients with IDD and controls using RT-qPCR, and we showed that miR-138-5p was significantly upregulated in degenerative NP tissues. Additionally, TNF-α-induced apoptosis was inhibited when using a miR-138-5p inhibitor in human NP cells, and silencing of miR-138-5p dramatically suppressed the expression of cleaved caspase-3. Moreover, bioinformatics target prediction identified SIRT1 as a putative target of miR-138-5p. Knockdown of miR-138-5p was shown to upregulate SIRT1 expression by direct targeting its 3'-UTR, an effect that was abolished by mutation of the miR-138-5p binding sites. Furthermore, inhibition of miR-138-5p downregulated PTEN protein expression and promoted activation of PI3K/AKT, and knockdown of either SIRT1 or the PI3K/Akt inhibitor (LY294002) abolished the effect of miR-138-5p on NP cell apoptosis. Together, these results indicate that miR-138-5p is a novel regulator of human NP cell apoptosis induced by TNF-α. The knockout of miR-138-5p expression protected human NP cells from apoptosis via the upregulation of SIRT1, which was possibly mediated via PTEN/PI3K/Akt signaling. These findings suggest that the miR-138-5p/SIRT1/PTEN/PI3K/Akt signaling pathway might represent a novel therapeutic target for the prevention of IDD.
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Wang X, Li H, Xu K, Zhu H, Peng Y, Liang A, Li C, Huang D, Ye W. SIRT1 expression is refractory to hypoxia and inflammatory cytokines in nucleus pulposus cells: Novel regulation by HIF-1α and NF-κB signaling. Cell Biol Int 2016; 40:716-26. [PMID: 27061137 DOI: 10.1002/cbin.10610] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 04/03/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Xiaofei Wang
- Department of Spine Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
| | - Hongjian Li
- Department of Spine Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
- Department of Orthopedics; First People's Hospital of Yunnan Province; Kunming China
| | - Kang Xu
- Experimental Center of Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
| | - Haipeng Zhu
- Department of Spine Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
| | - Yan Peng
- Department of Spine Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
| | - Anjing Liang
- Department of Spine Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
| | - Chunhai Li
- Department of Spine Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
| | - Dongsheng Huang
- Department of Spine Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
| | - Wei Ye
- Department of Spine Surgery; Sun Yat-sen Memorial Hospital of Sun Yat-sen University; Guangzhou China
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Wang XH, Zhu L, Hong X, Wang YT, Wang F, Bao JP, Xie XH, Liu L, Wu XT. Resveratrol attenuated TNF-α-induced MMP-3 expression in human nucleus pulposus cells by activating autophagy via AMPK/SIRT1 signaling pathway. Exp Biol Med (Maywood) 2016; 241:848-53. [PMID: 26946533 DOI: 10.1177/1535370216637940] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 02/05/2016] [Indexed: 12/25/2022] Open
Abstract
Resveratrol (RSV) is known to play a role of anti-TNF-α in a number of cell types. However, whether RSV modulates the effects of TNF-α on human nucleus pulposus (NP) cells is unknown. The purpose of this study is to investigate whether RSV regulates TNF-α-induced matrix metalloproteinase-3 (MMP-3) expression. Via quantitative real-time polymerase chain reaction (qRT-PCR) analysis, we found that MMP-3 expression induced by TNF-α was inhibited by RSV treatment. Depending on Western blot and qRT-PCR assay, we found that RSV induced autophagy in human NP cells, whereas inhibition of autophagy remarkably abolished the restraining role of RSV in the TNF-α-mediated up-regulation of MMP-3. Furthermore, RSV increased SIRT1 expression and SIRT1 knockdown significantly suppressed RSV-induced autophagy in NP cells. RSV also activated AMP-activated protein kinase (AMPK), while inhibition of AMPK notably abolished RSV-induced SIRT1 expression. Our data showed that RSV attenuated TNF-α-induced MMP-3 expression in human NP cells by activating autophagy via AMPK/SIRT1 signaling pathway. This new finding suggested that RSV might act as a novel preventive and therapeutic role in intervertebral disc degeneration.
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Affiliation(s)
- Xiao-Hu Wang
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Lei Zhu
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Xin Hong
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Yun-Tao Wang
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Feng Wang
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Jun-Ping Bao
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Xin-Hui Xie
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Lei Liu
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Xiao-Tao Wu
- Spine Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
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Krock E, Currie JB, Weber MH, Ouellet JA, Stone LS, Rosenzweig DH, Haglund L. Nerve Growth Factor Is Regulated by Toll-Like Receptor 2 in Human Intervertebral Discs. J Biol Chem 2015; 291:3541-51. [PMID: 26668319 DOI: 10.1074/jbc.m115.675900] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Indexed: 11/06/2022] Open
Abstract
Nerve growth factor (NGF) contributes to the development of chronic pain associated with degenerative connective tissue pathologies, such as intervertebral disc degeneration and osteoarthritis. However, surprisingly little is known about the regulation of NGF in these conditions. Toll-like receptors (TLR) are pattern recognition receptors classically associated with innate immunity but more recently were found to be activated by endogenous alarmins such as fragmented extracellular matrix proteins found in degenerating discs or cartilage. In this study we investigated if TLR activation regulates NGF and which signaling mechanisms control this response in intervertebral discs. TLR2 agonists, TLR4 agonists, or IL-1β (control) treatment increased NGF, brain-derived neurotrophic factor (BDNF), and IL-1β gene expression in human disc cells isolated from healthy, pain-free organ donors. However, only TLR2 activation or IL-1β treatment increased NGF protein secretion. TLR2 activation increased p38, ERK1/2, and p65 activity and increased p65 translocation to the cell nucleus. JNK activity was not affected by TLR2 activation. Inhibition of NF-κB, and to a lesser extent p38, but not ERK1/2 activity, blocked TLR2-driven NGF up-regulation at both the transcript and protein levels. These results provide a novel mechanism of NGF regulation in the intervertebral disc and potentially other pathogenic connective tissues. TLR2 and NF-κB signaling are known to increase cytokines and proteases, which accelerate matrix degradation. Therefore, TLR2 or NF-κB inhibition may both attenuate chronic pain and slow the degenerative progress in vivo.
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Affiliation(s)
- Emerson Krock
- From the Orthopeadic Research Laboratory, Faculty of Medicine, Alan Edwards Centre for Research on Pain, McGill Scoliosis and Spine Research Group
| | - J Brooke Currie
- From the Orthopeadic Research Laboratory, Faculty of Medicine
| | | | - Jean A Ouellet
- Alan Edwards Centre for Research on Pain, McGill Scoliosis and Spine Research Group
| | - Laura S Stone
- Alan Edwards Centre for Research on Pain, McGill Scoliosis and Spine Research Group, Integrated Program in Neuroscience, Departments of Anesthesiology, Pharmacology, and Therapeutics, Faculty of Medicine, and Faculty of Dentistry, McGill University, Montreal Quebec H3G 1A4, Canada
| | - Derek H Rosenzweig
- From the Orthopeadic Research Laboratory, Faculty of Medicine, McGill Scoliosis and Spine Research Group
| | - Lisbet Haglund
- From the Orthopeadic Research Laboratory, Faculty of Medicine, McGill Scoliosis and Spine Research Group,
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Wang C, Wang WJ, Yan YG, Xiang YX, Zhang J, Tang ZH, Jiang ZS. MicroRNAs: New players in intervertebral disc degeneration. Clin Chim Acta 2015; 450:333-41. [DOI: 10.1016/j.cca.2015.09.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 08/29/2015] [Accepted: 09/10/2015] [Indexed: 12/20/2022]
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MicroRNA-494 inhibition protects nucleus pulposus cells from TNF-α-induced apoptosis by targeting JunD. Biochimie 2015; 115:1-7. [PMID: 25906693 DOI: 10.1016/j.biochi.2015.04.011] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 04/11/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND Human nucleus pulposus cell (HNPC) apoptosis plays an important role in the development of intervertebral disc degeneration (IVDD). Our previous research revealed that among all of the dysregulated microRNAs in the degenerated nucleus pulposus tissues of patient with IVDD, miRNA-494 (miR-494) is the most significantly increased. However, the influence of miR-494 HNPC apoptosis has not been confirmed. OBJECTIVE This study was designed to evaluate the effect of miR-494 on the HNPC apoptosis induced by TNF-α and to explore the possible mechanism of this process. METHODS First, HNPCs were stimulated with TNF-α at different concentrations (0 ng/ml, 10 ng/ml, 50 ng/ml, or 100 ng/ml) for 0 h, 8 h, 16 h, or 24 h. Annexin V-PE/7-AAD assays and real-time quantitative PCR were used to detect the cell apoptosis rates and miR-494 expression. Second, we successfully knocked down endogenous miR-494 in HNPCs via lentiviral antigomiR-494 vector infection and then stimulated with TNF-α (100 ng/ml, 16 h). The rates of apoptosis and miR-494 expression were then detected again. Additionally, a dual-luciferase reporter assay and western blotting were used to determine whether JunD is a target of miR-494. Finally, western blotting was used to analyze the expression of cytochrome C. RESULTS We found that the rate of apoptosis increased with concentration, time (p < 0.05) and miR-494 expression (p < 0.05). The rate of apoptosis in the 100 ng/ml, 16 h group appeared to be suitable. After transfection, the apoptosis rate and miR-494 expression were significantly decreased in the antigomiR-494+TNF-α group compared to the controls (p < 0.05). We also revealed that JunD is a target of miR-494. Western blotting analysis demonstrated that treatment with the lentiviral antigomiR-494 vector resulted in increased expression of JunD (p < 0.05) and decreased expression of cytochrome C (p < 0.05). CONCLUSION These results indicated that miR-494 is a novel regulator of HNPC apoptosis induced by TNF-α. The knock-out of miR-494 expression protected the HNPCs from apoptosis via the up-regulation of JunD, which was possibly mediated via cytochrome C apoptotic signaling. These findings suggest that the miR-494/JunD signaling pathway might represent a novel therapeutic target for the prevention of IVDD.
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