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Song C, Hu P, Peng R, Li F, Fang Z, Xu Y. Bioenergetic dysfunction in the pathogenesis of intervertebral disc degeneration. Pharmacol Res 2024; 202:107119. [PMID: 38417775 DOI: 10.1016/j.phrs.2024.107119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/01/2024]
Abstract
Intervertebral disc (IVD) degeneration is a frequent cause of low back pain and is the most common cause of disability. Treatments for symptomatic IVD degeneration, including conservative treatments such as analgesics, physical therapy, anti-inflammatories and surgeries, are aimed at alleviating neurological symptoms. However, there are no effective treatments to prevent or delay IVD degeneration. Previous studies have identified risk factors for IVD degeneration such as aging, inflammation, genetic factors, mechanical overload, nutrient deprivation and smoking, but metabolic dysfunction has not been highlighted. IVDs are the largest avascular structures in the human body and determine the hypoxic and glycolytic features of nucleus pulposus (NP) cells. Accumulating evidence has demonstrated that intracellular metabolic dysfunction is associated with IVD degeneration, but a comprehensive review is lacking. Here, by reviewing the physiological features of IVDs, pathological processes and metabolic changes associated with IVD degeneration and the functions of metabolic genes in IVDs, we highlight that glycolytic pathway and intact mitochondrial function are essential for IVD homeostasis. In degenerated NPs, glycolysis and mitochondrial function are downregulated. Boosting glycolysis such as HIF1α overexpression protects against IVD degeneration. Moreover, the correlations between metabolic diseases such as diabetes, obesity and IVD degeneration and their underlying molecular mechanisms are discussed. Hyperglycemia in diabetic diseases leads to cell senescence, the senescence-associated phenotype (SASP), apoptosis and catabolism of extracellualr matrix in IVDs. Correcting the global metabolic disorders such as insulin or GLP-1 receptor agonist administration is beneficial for diabetes associated IVD degeneration. Overall, we summarized the recent progress of investigations on metabolic contributions to IVD degeneration and provide a new perspective that correcting metabolic dysfunction may be beneficial for treating IVD degeneration.
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Affiliation(s)
- Chao Song
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Peixuan Hu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Renpeng Peng
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Feng Li
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
| | - Zhong Fang
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
| | - Yong Xu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
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Huang ZN, Wang ZY, Cheng XF, Huang ZZ, Han YL, Cui YZ, Liu B, Tian W. Melatonin alleviates oxidative stress-induced injury to nucleus pulposus-derived mesenchymal stem cells through activating PI3K/Akt pathway. J Orthop Translat 2023; 43:66-84. [PMID: 38089645 PMCID: PMC10711395 DOI: 10.1016/j.jot.2023.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/23/2023] [Accepted: 10/10/2023] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND The changes in the microenvironment of degenerative intervertebral discs cause oxidative stress injury and excessive apoptosis of intervertebral disc endogenous stem cells. The purpose of this study was to explore the possible mechanism of the protective effect of melatonin on oxidative stress injury in NPMSCs induced by H2O2. METHODS The Cell Counting Kit-8 assay was used to evaluate the cytotoxicity of hydrogen peroxide and the protective effects of melatonin. ROS content was detected by 2'7'-dichlorofluorescin diacetate (DCFH-DA). Mitochondrial membrane potential (MMP) was detected by the JC-1assay. Transferase mediated d-UTP Nick end labeling (TUNEL) and Annexin V/PI double staining were used to determine the apoptosis rate. Additionally, apoptosis-associated proteins and PI3K/Akt signaling pathway-related proteins were evaluated by immunofluorescence, immunoblotting and PCR. ECMs were evaluated by RT‒PCR and immunofluorescence. In vivo, X-ray, Magnetic resonance imaging (MRI) and Histological analyses were used to evaluate the protective effect of melatonin. RESULTS Melatonin had an obvious protective effect on NPMSCs treated with 0-10 μM melatonin for 24 h. In addition, melatonin also had obvious protective effects on mitochondrial dysfunction, decreased membrane potential and cell senescence induced by H2O2. More importantly, melatonin could significantly reduce the apoptosis of nucleus pulposus mesenchymal stem cells induced by H2O2 by regulating the expression of apoptosis-related proteins and decreasing the rate of apoptosis. After treatment with melatonin, the PI3K/Akt pathway was significantly activated in nucleus pulposus mesenchymal stem cells, while the protective effect was significantly weakened after PI3K-IN-1 treatment. In vivo, the results of X-ray, MRI and histological analyses showed that therapy with melatonin could partially reduce the degree of intervertebral disc degeneration. CONCLUSION Our research demonstrated that melatonin can effectively alleviate the excessive apoptosis and mitochondrial dysfunction of nucleus pulposus mesenchymal stem cells induced by oxidative stress via the PI3K/Akt pathway, which provides a novel idea for the therapy of intervertebral disc degeneration. THE TRANSLATIONAL POTENTIAL OF THIS ARTICLE This study indicates that melatonin can effectively alleviate the excessive apoptosis and mitochondrial dysfunction of NPMSCs through activating the PI3K/Akt pathway. Melatonin might serve as a promising candidate for the prevention and treatment of Intervertebral disc degeneration disease (IVDD) in the future.
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Affiliation(s)
- Ze-Nan Huang
- Department of Orthopedics, Shandong First Medical University & Shandong Academy of Medical Science, Shandong, 200072, China
- Department of Spine Surgery, Beijing Jishuitan Hospital, The Fourth Clinical Hospital Affiliated to Peking University, No. 37 Xinjiekou East, Road, Beijing, 100035, China
| | - Ze-Yu Wang
- Department of Orthopedics, The Affiliated BenQ Hospital of Nanjing Medical University, 210019, Nanjing, Jiangsu Province, China
| | - Xiao-Fei Cheng
- Department of Orthopedic Surgery, Shanghai Key Laboratory of Orthopedics Implants, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China
| | - Zhao-Zhang Huang
- Taixing Medical Center, Taixing People's Hospital, Taixing, 225400, Jiangsu Province, China
| | - Yan-Ling Han
- Medical Experimental Research Center, Yangzhou University, Yangzhou, 225001, China
| | - Ya-Zhou Cui
- Department of Orthopedics, Shandong First Medical University & Shandong Academy of Medical Science, Shandong, 200072, China
| | - Bo Liu
- Department of Spine Surgery, Beijing Jishuitan Hospital, The Fourth Clinical Hospital Affiliated to Peking University, No. 37 Xinjiekou East, Road, Beijing, 100035, China
| | - Wei Tian
- Department of Spine Surgery, Beijing Jishuitan Hospital, The Fourth Clinical Hospital Affiliated to Peking University, No. 37 Xinjiekou East, Road, Beijing, 100035, China
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Zhang Z, Chen M, Zhan W, Chen Y, Wang T, Chen Z, Fu Y, Zhao G, Mao D, Ruan J, Yuan FL. Acid-sensing ion channel 1a modulation of apoptosis in acidosis-related diseases: implications for therapeutic intervention. Cell Death Discov 2023; 9:330. [PMID: 37666823 PMCID: PMC10477349 DOI: 10.1038/s41420-023-01624-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/28/2023] [Accepted: 08/22/2023] [Indexed: 09/06/2023] Open
Abstract
Acid-sensing ion channel 1a (ASIC1a), a prominent member of the acid-sensing ion channel (ASIC) superfamily activated by extracellular protons, is ubiquitously expressed throughout the human body, including the nervous system and peripheral tissues. Excessive accumulation of Ca2+ ions via ASIC1a activation may occur in the acidified microenvironment of blood or local tissues. ASIC1a-mediated Ca2+‑induced apoptosis has been implicated in numerous pathologies, including neurological disorders, cancer, and rheumatoid arthritis. This review summarizes the role of ASIC1a in the modulation of apoptosis via various signaling pathways across different disease states to provide insights for future studies on the underlying mechanisms and development of therapeutic strategies.
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Affiliation(s)
- Zhenyu Zhang
- Institute of Integrated Chinese and Western Medicine, Affiliated to Jiangnan University, Wuxi, Jiangsu, 214041, China
| | - Minnan Chen
- Nantong First People's Hospital, Nantong, 226001, China
| | - Wenjing Zhan
- The Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Medical University, Hefei, 230032, China
| | - Yuechun Chen
- Institute of Integrated Chinese and Western Medicine, Affiliated to Jiangnan University, Wuxi, Jiangsu, 214041, China
| | - Tongtong Wang
- Institute of Integrated Chinese and Western Medicine, Affiliated to Jiangnan University, Wuxi, Jiangsu, 214041, China
| | - Zhonghua Chen
- Institute of Integrated Chinese and Western Medicine, Affiliated to Jiangnan University, Wuxi, Jiangsu, 214041, China
| | - Yifei Fu
- Institute of Integrated Chinese and Western Medicine, Affiliated to Jiangnan University, Wuxi, Jiangsu, 214041, China
| | - Gang Zhao
- Orthopaedic Institute, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, 214062, China
| | - Dong Mao
- Orthopaedic Institute, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, 214062, China.
| | - Jingjing Ruan
- Nantong First People's Hospital, Nantong, 226001, China.
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, People's Republic of China.
| | - Feng-Lai Yuan
- Institute of Integrated Chinese and Western Medicine, Affiliated to Jiangnan University, Wuxi, Jiangsu, 214041, China.
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Zhang Q, Yao Z, Chen F, Wang X, Wang M, Lu J, Meng Y, Xu L, Han Y, Liu W, Wang H. TIGAR Protects Cochlear Hair Cells against Teicoplanin-Induced Damage. Mol Neurobiol 2023; 60:3788-3802. [PMID: 36943624 PMCID: PMC10029784 DOI: 10.1007/s12035-023-03309-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 03/05/2023] [Indexed: 03/23/2023]
Abstract
Teicoplanin is a glycopeptide antibiotic used to treat severe staphylococcal infections. It has been claimed that teicoplanin possesses ototoxic potential, although its toxic effects on cochlear hair cells (HCs) remain unknown. The TP53-induced glycolysis and apoptosis regulator (TIGAR) plays a crucial role in promoting cell survival. Prior research has demonstrated that TIGAR protects spiral ganglion neurons against cisplatin damage. However, the significance of TIGAR in damage to mammalian HCs has not yet been investigated. In this study, firstly, we discovered that teicoplanin caused dose-dependent cell death in vitro in both HEI-OC1 cells and cochlear HCs. Next, we discovered that HCs and HEI-OC1 cells treated with teicoplanin exhibited a dramatically decrease in TIGAR expression. To investigate the involvement of TIGAR in inner ear injury caused by teicoplanin, the expression of TIGAR was either upregulated via recombinant adenovirus or downregulated by shRNA in HEI-OC1 cells. Overexpression of TIGAR increased cell viability, decreased apoptosis, and decreased intracellular reactive oxygen species (ROS) level, whereas downregulation of TIGAR decreased cell viability, exacerbated apoptosis, and elevated ROS level following teicoplanin injury. Finally, antioxidant therapy with N-acetyl-L-cysteine decreased ROS level, prevented cell death, and restored p38/phosphorylation-p38 expression levels in HEI-OC1 cells injured by teicoplanin. This study demonstrates that TIGAR may be a promising novel target for the prevention of teicoplanin-induced ototoxicity.
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Affiliation(s)
- Qiongmin Zhang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Zhiqun Yao
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Fang Chen
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Xue Wang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Man Wang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Junze Lu
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Yu Meng
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Lei Xu
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Yuechen Han
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China
| | - Wenwen Liu
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China.
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China.
| | - Haibo Wang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China.
- Shandong Institute of Otorhinolaryngology, Jinan, Shandong, China.
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Zou YP, Zhang QC, Zhang QY, Jiang LB, Li XL. Procyanidin B2 alleviates oxidative stress-induced nucleus pulposus cells apoptosis through upregulating Nrf2 via PI3K-Akt pathway. J Orthop Res 2022. [PMID: 36448180 DOI: 10.1002/jor.25492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 10/25/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022]
Abstract
Oxidative stress can lead to nucleus pulposus cell (NPC) apoptosis, which is considered to be one of the main contributors to intervertebral disc degeneration (IVDD). Procyanidin B2 is a natural antioxidant that protects against oxidative stress. However, whether procyanidin B2 protects NPCs from oxidative stress remains unknown. In this study, we demonstrated that procyanidin B2 could reduce tert-butyl hydroperoxide-induced reactive oxygen species in rat NPCs and attenuate rat NPC apoptosis. Further experiments revealed that procyanidin B2 upregulated the expression of both nuclear factor erythroid 2-related factor 2 (Nrf2) and phosphorylation of protein kinase B (Akt). We then used silencing of Nrf2 and LY294002 to silence Nrf2 expression and block the phosphatidylinositol 3-kinase (PI3K)/Akt pathway, respectively, and found that the protective roles of procyanidin B2 in NPCs were inhibited. Therefore, we demonstrated that procyanidin B2 alleviated rat NPC apoptosis induced by oxidative stress by upregulating Nrf2 via activation of the PI3K/Akt signaling pathway. This study provides a potential therapeutic approach for procyanidin B2 in IVDD, which might help in the development of new drugs for IVDD treatment.
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Affiliation(s)
- Yan-Pei Zou
- Department of Orthopaedic Surgery, Zhongshan Hospital Fudan University, Shanghai, China
| | - Qi-Chen Zhang
- Department of Orthopaedic Surgery, Zhongshan Hospital Fudan University, Shanghai, China
| | - Qian-Yi Zhang
- Department of Orthopaedic Surgery, Zhongshan Hospital Fudan University, Shanghai, China
| | - Li-Bo Jiang
- Department of Orthopaedic Surgery, Zhongshan Hospital Fudan University, Shanghai, China
| | - Xi-Lei Li
- Department of Orthopaedic Surgery, Zhongshan Hospital Fudan University, Shanghai, China
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Wu Z, Liu L. The protective activity of genistein against bone and cartilage diseases. Front Pharmacol 2022; 13:1016981. [PMID: 36160403 PMCID: PMC9492956 DOI: 10.3389/fphar.2022.1016981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 08/25/2022] [Indexed: 11/13/2022] Open
Abstract
Genistein, a natural isoflavone rich in soybean and leguminous plants, has been shown various biological effects, such as anti-inflammation, anti-oxidation, anti-cancer, and bone/cartilage protection. Due to the structural similarity to estrogen, genistein exhibits estrogen-like activity in protecting against osteoporosis and osteoarthritis. Furthermore, genistein has been considered as an inhibitor of tyrosine kinase, which has been found to be dysregulated in the pathological development of osteoporosis, osteoarthritis, and intervertebral disc degeneration (IDD). Many signaling pathways, such as MAPK, NF-κB, and NRF2/HO-1, are involved in the regulatory activity of genistein in protecting against bone and cartilage diseases. The potential molecular mechanisms of genistein in therapeutic management of bone and cartilage diseases have been investigated, but remain to be fully understood. In this article, we mainly discuss the current knowledge of genistein in protecting against bone and cartilage diseases, such as osteoporosis, osteoarthritis, rheumatoid arthritis (RA), and IDD.
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Affiliation(s)
- Zhenyu Wu
- First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- First Clinical Medical College of Gannan Medical University, Ganzhou, China
- *Correspondence: Zhenyu Wu,
| | - Luying Liu
- First Clinical Medical College of Gannan Medical University, Ganzhou, China
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Exercise-induced FNDC5/irisin protects nucleus pulposus cells against senescence and apoptosis by activating autophagy. EXPERIMENTAL & MOLECULAR MEDICINE 2022; 54:1038-1048. [PMID: 35882943 PMCID: PMC9355987 DOI: 10.1038/s12276-022-00811-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 01/04/2023]
Abstract
Intervertebral disc degeneration (IVDD) is a major cause of low back pain (LBP), and excessive senescence and apoptosis of nucleus pulposus (NP) cells are major pathological changes in IVDD. Physical exercise could effectively delay the process of intervertebral disc degeneration; however, its mechanism is still largely unknown. Irisin is an exercise-induced myokine released upon cleavage of the membrane-bound precursor protein fibronectin type III domain-containing protein 5 (FNDC5), and its levels increase after physical exercise. Here, we show that after physical exercise, FNDC5/irisin levels increase in the circulation and NP, senescence and apoptosis are reduced, autophagy is activated in NP tissue, and the progression of IVDD is delayed. Conversely, after knocking out FNDC5, the benefits of physical exercise are compromised. Moreover, the overexpression of FNDC5 in NP tissue effectively alleviated the degeneration of the intervertebral disc (IVD) in rats. By showing that FNDC5/irisin is an important mediator of the beneficial effects of physical exercise in the IVDD model, the study proposes FNDC5/irisin as a novel agent capable of activating autophagy and protecting NP from senescence and apoptosis.
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Bushen Huoxue Formula Modulates Autophagic Flux and Inhibits Apoptosis to Protect Nucleus Pulposus Cells by Restoring the AMPK/SIRT1 Pathway. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8929448. [PMID: 35669720 PMCID: PMC9167005 DOI: 10.1155/2022/8929448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 11/26/2022]
Abstract
Background Low back pain (LBP) has the characteristics of chronic and persistence, which is a heavy social burden. Intervertebral disc degeneration (IVDD) is a major cause of LBP. The typical features of IVDD are extracellular matrix (ECM) degradation and nucleus pulposus cell (NP) apoptosis. Bushen Huoxue Formula (BSHXF) has good clinical effects on LBP. However, the mechanism of BSHXF affecting ECM and NP cells is still unclear. Aim of the Study. In this study, the impact of BSHXF on autophagy and apoptosis of NP cells was studied through the AMPK/SIRT1 pathway. Material and Methods. NP cells were extracted through the digestion of collagenase and trypsin, and the components of BSHXF were identified. Cell Counting Kit-8 was applied to detect the impact of BSHXF on NP cells. Mitochondrial function was detected using MitoTracker assay, ATP kit, and SOD kit. Autophagy and apoptosis were detected by RT-qPCR, western blotting, and flow cytometry. Results BSHXF promoted NP cell survival in a concentration-dependent manner, and the elimination of rat serum did not increase cell proliferation; TNF-α accelerated ECM degradation, ROS accumulation, and NP cell apoptosis and decreased autophagic flux. BSHXF restored mitochondrial function and autophagic flux. In addition, AMPK/SIRT1 pathway activation was associated with IVDD. Conclusions BSHXF regulates autophagy and enhances autophagic flux to suppress excessive ROS production and restore mitochondrial function in an AMPK/SIRT1-dependent manner. However, the protection of BSHXF on TNF-α-treated cells was eliminated by 3-MA. Furthermore, the protective impact of BSHXF on ECM degradation and apoptosis induced by TNF-α was restrained by an AMPK inhibitor. Therefore, maintaining the proper autophagy illustrates treatment strategy for IVDD.
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Dianati-Nasab A, Nasrollahi H, Khoshdel Z, Ghorbani M, Shafiee SM. Overexpression of TIGAR and HO-1 in peripheral blood mononuclear cells (PBMCs) of breast cancer patients treated with radiotherapy. Int J Radiat Biol 2022; 98:1551-1558. [PMID: 35452587 DOI: 10.1080/09553002.2022.2063432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Radiation therapy (RT) is one of the primary treatment choices for breast cancer. In reaction to RT, many metabolic processes in the body are triggered, some of which have a role in counteracting free radicals in cancer cells. As a result, it is important to comprehend the effects of RT on multiple genes, biomarkers and enzymes in the body. METHODS AND MATERIALS Peripheral blood mononuclear cells (PBMCs) were obtained from 83 breast cancer patients in pre-and post- RT (50 Gray (Gy) in 25 fractions). The TIGAR and HO-1 gene expressions were investigated by quantitative real-time PCR (qRT-PCR). Serum bilirubin, total antioxidant capacity (TAC), total protein (TP), alanine aminotransferase (ALT), aspartate transaminase (AST), and alkaline phosphatase (ALP) were assayed in serum patients before and after RT. RESULTS We found that bilirubin (p = 0.001), ALT (p = 0.04), and AST (p = 0.03) were significantly increased, while TAC (p < 0.001) and TP (p = 0.001) were decreased after RT. However, albumin and ALP did not change after RT (p > 0.05 for both). Interestingly, RT led to overexpression of TIGAR (p = 0.004) and HO-1 (p = 0.003) genes in breast cancer patients. CONCLUSIONS The findings of this study showed that RT could overexpress TIGAR and HO-1 in PBMCs of breast cancer patients. More research is required to figure out the mechanisms behind the impacts of RT on increased catabolism and production of bilirubin or increased activity of TIGAR-related pathways and overexpression of TIGAR and HO-1.
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Affiliation(s)
- Aria Dianati-Nasab
- Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamid Nasrollahi
- Department of Radiation Oncology, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Khoshdel
- Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahboobeh Ghorbani
- Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sayed Mohammad Shafiee
- Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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1,25(OH)2D3 Mitigates Oxidative Stress-Induced Damage to Nucleus Pulposus-Derived Mesenchymal Stem Cells through PI3K/Akt Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1427110. [PMID: 35340208 PMCID: PMC8956384 DOI: 10.1155/2022/1427110] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/29/2022] [Accepted: 02/28/2022] [Indexed: 12/11/2022]
Abstract
Intervertebral disc degeneration (IVDD) is one of the main causes of low back pain. The local environment of the degenerated intervertebral disc (IVD) increases oxidative stress and apoptosis of endogenous nucleus pulposus-derived mesenchymal stem cells (NPMSCs) and weakens its ability of endogenous repair ability in degenerated IVDs. A suitable concentration of 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) has been certified to reduce oxidative stress and cell apoptosis. The current study investigated the protective effect and potential mechanism of 1,25(OH)2D3 against oxidative stress-induced damage to NPMSCs. The present results showed that 1,25(OH)2D3 showed a significant protective effect on NPMSCs at a concentration of 10−10 M for 24 h. Protective effects of 1,25(OH)2D3 were also exhibited against H2O2-induced NPMSC senescence, mitochondrial dysfunction, and reduced mitochondrial membrane potential. The Annexin V/PI apoptosis detection assay, TUNEL assay, immunofluorescence, western blot, and real-time quantitative polymerase chain reaction assay showed that pretreatment with 1,25(OH)2D3 could alleviate H2O2-induced NPMSC apoptosis, including the apoptosis rate and the expression of proapoptotic-related (Caspase-3 and Bax) and antiapoptotic-related (Bcl-2) proteins. The intracellular expression of p-Akt increased after pretreatment with 1,25(OH)2D3. However, these protective effects of 1,25(OH)2D3 were significantly decreased after the PI3K/Akt pathway was inhibited by the LY294002 treatment. In vivo, X-ray, MRI, and histological analyses showed that 1,25(OH)2D3 treatment relieved the degree of IVDD in Sprague–Dawley rat disc puncture models. In summary, 1,25(OH)2D3 efficiently attenuated oxidative stress-induced NPMSC apoptosis and mitochondrial dysfunction via PI3K/Akt pathway and is a promising candidate treatment for the repair of IVDD.
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Ding SL, Zhang TW, Zhang QC, Ding W, Li ZF, Han GJ, Bai JS, Li XL, Dong J, Wang HR, Jiang LB. Excessive mechanical strain accelerates intervertebral disc degeneration by disrupting intrinsic circadian rhythm. Exp Mol Med 2021; 53:1911-1923. [PMID: 34934193 PMCID: PMC8741925 DOI: 10.1038/s12276-021-00716-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 07/28/2021] [Accepted: 08/06/2021] [Indexed: 11/09/2022] Open
Abstract
Night shift workers with disordered rhythmic mechanical loading are more prone to intervertebral disc degeneration (IDD). Our results showed that circadian rhythm (CR) was dampened in degenerated and aged NP cells. Long-term environmental CR disruption promoted IDD in rats. Excessive mechanical strain disrupted the CR and inhibited the expression of core clock proteins. The inhibitory effect of mechanical loading on the expression of extracellular matrix genes could be reversed by BMAL1 overexpression in NP cells. The Rho/ROCK pathway was demonstrated to mediate the effect of mechanical stimulation on CR. Prolonged mechanical loading for 12 months affected intrinsic CR genes and induced IDD in a model of upright posture in a normal environment. Unexpectedly, mechanical loading further accelerated the IDD in an Light-Dark (LD) cycle-disrupted environment. These results indicated that intrinsic CR disruption might be a mechanism involved in overloading-induced IDD and a potential drug target for night shift workers. Working long shifts at times when the body should be at rest can have lasting effects on the intervertebral discs in the back, leading to chronic pain. Night shift workers are susceptible to developing certain health conditions because of chronic disruption to their circadian rhythms. Now, Li-Bo Jiang at Zhongshan Hospitial, Fudan University in Shanghai and co-workers across China have uncovered a link between circadian rhythm disruption and intervertebral disc degeneration. In experiments on human tissue samples and rat models, the team found that oscillation of the expression of clock-related genes and proteins was reduced in severely degenerated disc cells. Cellular clock mechanisms were disrupted in disc cells that had been repeatedly placed under mechanical strain at night. This disruption appears to influence degradation of the extracellular matrix, which the team believe may in turn accelerate disc degeneration.
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Affiliation(s)
- Sheng-Long Ding
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China
| | - Tai-Wei Zhang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China
| | - Qi-Chen Zhang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China
| | - Wang Ding
- Department of Orthopedic Surgery, Minhang Hospital, Fudan University, 201100, Shanghai, China
| | - Ze-Fang Li
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China.,Department of Orthopedic Surgery, Qianjiang Central Hospital of Chongqing, 409000, Chongqing, China
| | - Guan-Jie Han
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China
| | - Jin-Song Bai
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China
| | - Xi-Lei Li
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China.
| | - Jian Dong
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China.
| | - Hui-Ren Wang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China.
| | - Li-Bo Jiang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 200032, Shanghai, China.
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12
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Yue L, Hu Y, Fu H, Qi L, Sun H. Hydrogen sulfide regulates autophagy in nucleus pulposus cells under hypoxia. JOR Spine 2021; 4:e1181. [PMID: 35005447 PMCID: PMC8717115 DOI: 10.1002/jsp2.1181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 11/01/2021] [Accepted: 11/05/2021] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE Hydrogen sulfide (H2S) has been found to act as an important gasotransmitter to regulate cell activities. This study aimed to investigate the effect of H2S on autophagy of nucleus pulposus (NP) cells under hypoxia and possible mechanism. MATERIALS AND METHODS NP cells were isolated from rat caudal discs. Cobalt chloride was used to mimic hypoxia, sodium hydrosulfide was used to emulate exogenous H2S and 3-methyladenine was used to block cell autophagy. Cell viability was assessed by phase contrast microscope and Cell Counting Kit-8 method. Moreover, expression of key autophagic proteins was analyzed via western blotting, and transmission electron microscopy was performed to detect autophagosomes. RESULTS Hypoxia markedly impaired NP cell proliferation compared with control. Whereas H2S provided pro-proliferation and pro-autophagy effects on hypoxic NP cells. However, these beneficial impact of H2S on hypoxic NP cells were reversed by autophagy inhibitor. CONCLUSIONS Our results showed that H2S played a cytoprotective role in NP cells exposed to hypoxia in an autophagy-dependent manner.
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Affiliation(s)
- Lei Yue
- Department of OrthopaedicsPeking University First Hospital, Peking UniversityBeijingChina
| | - Yongkai Hu
- Department of OrthopedicsGeneral Hospital of Southern Theatre Command of PLAGuangzhouChina
| | - Haoyong Fu
- Department of OrthopaedicsPeking University First Hospital, Peking UniversityBeijingChina
| | - Longtao Qi
- Department of OrthopaedicsPeking University First Hospital, Peking UniversityBeijingChina
| | - Haolin Sun
- Department of OrthopaedicsPeking University First Hospital, Peking UniversityBeijingChina
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13
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He R, Wang Z, Cui M, Liu S, Wu W, Chen M, Wu Y, Qu Y, Lin H, Chen S, Wang B, Shao Z. HIF1A Alleviates compression-induced apoptosis of nucleus pulposus derived stem cells via upregulating autophagy. Autophagy 2021; 17:3338-3360. [PMID: 33455530 PMCID: PMC8632345 DOI: 10.1080/15548627.2021.1872227] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 12/31/2020] [Indexed: 12/29/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is the primary pathological mechanism that underlies low back pain. Overloading-induced cell death, especially endogenous stem cell death, is the leading factor that undermines intrinsic repair and aggravates IDD. Previous research has separately studied the effect of oxygen concentration and mechanical loading in IDD. However, how these two factors synergistically influence endogenous repair remains unclear. Therefore, we established in vitro and in vivo models to study the mechanisms by which hypoxia interacted with overloading-induced cell death of the nucleus pulposus derived stem cells (NPSCs). We found the content of HIF1A (hypoxia inducible factor 1 subunit alpha) and the number of NPSCs decreased with disc degeneration in both rats and human discs. Hence, we isolated this subpopulation from rat discs and treated them simultaneously with hypoxia and excessive mechanical stress. Our results demonstrated that hypoxia exerted protective effect on NPSCs under compression, partially through elevating macroautophagy/autophagy. Proteomics and knockdown experiments further revealed HIF1A-BNIP3-ATG7 axis mediated the increase in autophagy flux, in which HMOX1 and SLC2A1 were also involved. Moreover, HIF1A-overexpressing NPSCs exhibited stronger resistance to over-loading induced apoptosis in vitro. They also showed higher survival rates, along with elevated autophagy after being intra-disc transplanted into over-loaded discs. Jointly, both in vivo and in vitro experiments proved the anti-apoptotic effect of HIF1A on NPSCs under the excessive mechanical loading, suggesting that restoring hypoxia and manipulating autophagy is crucial to maintain the intrinsic repair and to retard disc degeneration.Abbreviations: 3-MA: 3-methyladenine; ACAN: aggrecan; ATG7: autophagy related 7; BafA1: bafilomycin A1; BAX: BCL2 associated X, apoptosis regulator; BECN1: beclin 1; BNIP3: BCL2 interacting protein 3; BNIP3L: BCL2 interacting protein 3 like; CASP3: caspase 3; CCK8: cell counting kit-8; CHT: chetomin; CMP: compression; CoCl2: cobalt chloride; COL2A1: collagen type II alpha 1 chain; Ctrl: control; DAPI: 4,6-diamidino-2-phenylindole; DEP: differentially expressed protein; DiR: 1,1-dioctadecyl-3,3,3,3-tetramethyl indotricarbocyanine; ECM: extracellular matrix; FCM: flow cytometry; GD2: disialoganglioside GD 2; GFP: green fluorescent protein; GO: gene ontology; GSEA: gene set enrichment analysis; H&E: hematoxylin-eosin; HIF1A: hypoxia inducible factor 1 subunit alpha; HK2: hexokinase 2; HMOX1: heme oxygenase 1; HX: hypoxia mimicry; IDD: intervertebral disc degeneration; IF: immunofluorescence; IHC: immunohistochemistry; IVD: intervertebral disc; KEGG: kyoto encyclopedia of genes and genomes; LBP: low back pain; Lv: lentivirus; MAP1LC3B/LC3B: microtubule associated protein 1 light chain 3 beta; MMP: mitochondrial membrane potential; NC: negative control; NIR: near-infrared; NP: nucleus pulposus; NPC: nucleus pulposus cell; NPSC: nucleus pulposus derived stem cell; NX: normoxia; PPI: protein-protein interactions; RFP: red fluorescent protein; SLC2A1/GLUT1: solute carrier family 2 member 1; SQSTM1/p62: sequestosome 1; TEK/TIE2: TEK receptor tyrosine kinase; TEM: transmission electron microscopy; TUBB: tubulin beta class I.
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Affiliation(s)
- Ruijun He
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Zhe Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Cui
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sheng Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mo Chen
- Department of Health Management, School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yongchao Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanji Qu
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Hui Lin
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sheng Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Baichuan Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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14
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Xu Z, Zheng J, Zhang Y, Wu H, Sun B, Zhang K, Wang J, Zang F, Zhang X, Guo L, Wu X. Increased Expression of Integrin Alpha 6 in Nucleus Pulposus Cells in Response to High Oxygen Tension Protects against Intervertebral Disc Degeneration. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8632823. [PMID: 34707783 PMCID: PMC8545551 DOI: 10.1155/2021/8632823] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/18/2021] [Accepted: 09/25/2021] [Indexed: 11/17/2022]
Abstract
The destruction of the low oxygen microenvironment in nucleus pulposus (NP) cells played a critical role in the pathogenesis of intervertebral disc degeneration (IVDD). The purpose of this study was to determine the potential role of integrin alpha 6 (ITG α6) in NP cells in response to high oxygen tension (HOT) in IVDD. Immunofluorescence staining and western blot analysis showed that the levels of ITG α6 expression were increased in the NP tissue from IVDD patients and the IVDD rat model with mild degeneration, which were reduced as the degree of degeneration increases in severity. In NP cells, the treatment of HOT resulted in upregulation of ITG α6 expression, which could be alleviated by blocking the PI3K/AKT signaling pathway. Further studies found that ITG α6 could protect NP cells against HOT-induced apoptosis and oxidative stress and protect NP cells from HOT-inhibited ECM protein synthesis. Upregulation of ITG α6 expression by HOT contributed to maintaining NP tissue homeostasis through the interaction with hypoxia-inducible factor-1α (HIF-1α). Furthermore, silencing of ITG α6 in vivo could obviously accelerate puncture-induced IVDD. Taken together, these results revealed that the increase of ITG α6 expression by HOT in NP cells might be a protective factor in IVD degeneration as well as restore NP cell function.
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Affiliation(s)
- Zeng Xu
- Department of Orthopedics, Changzheng Hospital, The Naval Medical University, Shanghai, China
| | - Jiancheng Zheng
- Shanghai Key Laboratory for Bone and Joint Diseases, Shanghai Institute of Orthopaedics and Traumatology, Shanghai Ruijin Hospital, Shanghai Jiaotong University School of Medicine, China
| | - Ying Zhang
- Department of Orthopedics, Changzheng Hospital, The Naval Medical University, Shanghai, China
| | - Huiqiao Wu
- Department of Orthopedics, Changzheng Hospital, The Naval Medical University, Shanghai, China
| | - Bin Sun
- Department of Orthopedics, Changzheng Hospital, The Naval Medical University, Shanghai, China
| | - Ke Zhang
- Department of Orthopedics, Changzheng Hospital, The Naval Medical University, Shanghai, China
| | - Jianxi Wang
- Department of Orthopedics, Changzheng Hospital, The Naval Medical University, Shanghai, China
| | - Fazhi Zang
- Department of Orthopedics, Changzheng Hospital, The Naval Medical University, Shanghai, China
| | - Xingkai Zhang
- Shanghai Key Laboratory for Bone and Joint Diseases, Shanghai Institute of Orthopaedics and Traumatology, Shanghai Ruijin Hospital, Shanghai Jiaotong University School of Medicine, China
| | - Lei Guo
- Shanghai Key Laboratory for Bone and Joint Diseases, Shanghai Institute of Orthopaedics and Traumatology, Shanghai Ruijin Hospital, Shanghai Jiaotong University School of Medicine, China
| | - Xiaodong Wu
- Department of Orthopedics, Changzheng Hospital, The Naval Medical University, Shanghai, China
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15
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The Regulatory Effect of MicroRNA-101-3p on Disc Degeneration by the STC1/VEGF/MAPK Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:1073458. [PMID: 34650661 PMCID: PMC8510813 DOI: 10.1155/2021/1073458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/29/2021] [Accepted: 09/09/2021] [Indexed: 02/05/2023]
Abstract
Aims. Accumulating evidence reported that the microRNA (miRNA) took an important role in intervertebral disc degeneration (IDD). In this study, we revealed a novel miRNA regulatory mechanism in IDD. Main Methods. The miRNA microarray analyses of human degenerated and normal disc samples were employed to screen out the target miRNA. In vitro and in vivo experiments were conducted to verify the regulatory effect of miR-101-3p. Key Findings. The expression level of miR-101-3p was significantly decreased in the degenerated disc samples which were confirmed by qRT-PCR. Moreover, the miR-101-3p expression level was changed dynamically according to the disc degeneration grade. Upregulation of miR-101-3p expression level inhibited cell apoptosis. Furthermore, stanniocalcin-1 (STC1) was selected to be the target gene of miR-101-3p according to the bioinformatic algorithms. Mechanically, upregulation of miR-101-3p significantly decreased the expression of STC1, vascular endothelial growth factor (VEGF), and MAPK pathway expression levels. Therapeutically, in vivo experiment on IDD rat model illustrated that agomir-101-3p could effectively suspend IDD. Significance. Our findings demonstrated that miR-101-3p alleviated IDD process through the STC1/VEGF/MAPK pathway.
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16
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TP53-Induced Glycolysis and Apoptosis Regulator (TIGAR) Is Upregulated in Lymphocytes Stimulated with Concanavalin A. Int J Mol Sci 2021; 22:ijms22147436. [PMID: 34299056 PMCID: PMC8303789 DOI: 10.3390/ijms22147436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 02/07/2023] Open
Abstract
The glycolytic modulator TP53-Inducible Glycolysis and Apoptosis Regulator (TIGAR) is overexpressed in several types of cancer and has a role in metabolic rewiring during tumor development. However, little is known about the role of this enzyme in proliferative tissues under physiological conditions. In the current work, we analysed the role of TIGAR in primary human lymphocytes stimulated with the mitotic agent Concanavalin A (ConA). We found that TIGAR expression was induced in stimulated lymphocytes through the PI3K/AKT pathway, since Akti-1/2 and LY294002 inhibitors prevented the upregulation of TIGAR in response to ConA. In addition, suppression of TIGAR expression by siRNA decreased the levels of the proliferative marker PCNA and increased cellular ROS levels. In this model, TIGAR was found to support the activity of glucose 6-phosphate dehydrogenase (G6PDH), the first enzyme of the pentose phosphate pathway (PPP), since the inhibition of TIGAR reduced G6PDH activity and increased autophagy. In conclusion, we demonstrate here that TIGAR is upregulated in stimulated human lymphocytes through the PI3K/AKT signaling pathway, which contributes to the redirection of the carbon flux to the PPP.
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17
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Wang J, Huang Y, Huang L, Shi K, Wang J, Zhu C, Li L, Zhang L, Feng G, Liu L, Song Y. Novel biomarkers of intervertebral disc cells and evidence of stem cells in the intervertebral disc. Osteoarthritis Cartilage 2021; 29:389-401. [PMID: 33338640 DOI: 10.1016/j.joca.2020.12.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 10/23/2020] [Accepted: 12/09/2020] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Rat intervertebral disc (IVD) is one of the most commonly used and cost-effective alternative models for human IVD. Many IVD related clinical studies need to be pre-tested on rat IVDs. However, studies on the heterogeneous cell clusters of the rat IVD are inadequate, and a further understanding of the marker genes and cell phenotypes of healthy mature IVD cells is essential. METHODS In this study, we used the 10X Genomics technology to analyze the single-cell transcriptome of purified wild-type rat IVDs. RESULTS We identified potentially new gene markers of IVDs via single-cell sequencing. Based on the unsupervised cluster analysis of 13,578 single-cell transcripts, 3 known IVD cell types were identified. We provided a complete single-cell gene expression map of the IVD. Immunohistochemical and immunofluorescence images of rat disc sections confirmed the new marker genes of all cell types. One group of heterologous cell groups expressed multi-functional stem cell (MSC)-specific genes, indicating the stem cell potential of IVD cells. CONCLUSION We provided the phenotype and marker genes of IVD cells at the single-cell level, reconfirmed existing data, and proposed new marker genes, including MSC marker genes. By identifying more accurate target cells and genes, our results pave the way for further study of the response of individual disc cells to disease states and provide the basis for future disc regeneration therapies.
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Affiliation(s)
- J Wang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Y Huang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - L Huang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - K Shi
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - J Wang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - C Zhu
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - L Li
- Department of Science and Technology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - L Zhang
- Analytical and Testing Center, State Key Laboratory of Oral Diseases, School of Materials Science and Engineering, Sichuan University, Chengdu, 610065, China.
| | - G Feng
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - L Liu
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Y Song
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
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18
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Abstract
Cancer is a multifactorial disease that involves unique tumor microenvironment (TEM) and abnormal organs with complex structures.
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Affiliation(s)
- Zhengzou Fang
- Department of Pathogenic Microbiology and Immunology
- Southeast University School of Medicine
- Nanjing 210009
- People's Republic of China
| | - Yanfei Shen
- Medical School, Jiangsu Provincial Key Laboratory of Critical Care Medicine, School of Chemistry and Chemical Engineering Southeast University
- People's Republic of China
| | - Daqing Gao
- Department of Pathogenic Microbiology and Immunology
- Southeast University School of Medicine
- Nanjing 210009
- People's Republic of China
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19
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Allicin Attenuated Advanced Oxidation Protein Product-Induced Oxidative Stress and Mitochondrial Apoptosis in Human Nucleus Pulposus Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6685043. [PMID: 33381267 PMCID: PMC7758128 DOI: 10.1155/2020/6685043] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 12/15/2022]
Abstract
Intervertebral disc degeneration (IDD) is one of the most common chronic degenerative musculoskeletal disorders. Oxidative stress-induced apoptosis of the nucleus pulposus (NP) cells plays a key role during IDD progression. Advanced oxidation protein products (AOPP), novel biomarkers of oxidative stress, have been reported to function in various diseases due to their potential for disrupting the redox balance. The current study is aimed at investigating the function of AOPP in the oxidative stress-induced apoptosis of human NP cells and the alleviative effects of allicin during this process which was known for its antioxidant properties. AOPP were demonstrated to hamper the viability and proliferation of NP cells in a time- and concentration-dependent manner and cause cell apoptosis markedly. High levels of reactive oxygen species (ROS) and lipid peroxidation product malondialdehyde (MDA) were detected in NP cells after AOPP stimulation, which resulted in depolarized mitochondrial transmembrane potential (MTP). Correspondingly, higher levels of AOPP were discovered in the human degenerative intervertebral discs (IVD). It was also found that allicin could protect NP cells against AOPP-mediated oxidative stress and mitochondrial dysfunction via suppressing the p38-MAPK pathway. These results disclosed a significant role of AOPP in the oxidative stress-induced apoptosis of NP cells, which could be involved in the primary pathogenesis of IDD. It was also revealed that allicin could be a promising therapeutic approach against AOPP-mediated oxidative stress during IDD progression.
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20
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Nan LP, Wang F, Ran D, Zhou SF, Liu Y, Zhang Z, Huang ZN, Wang ZY, Wang JC, Feng XM, Zhang L. Naringin alleviates H 2O 2-induced apoptosis via the PI3K/Akt pathway in rat nucleus pulposus-derived mesenchymal stem cells. Connect Tissue Res 2020; 61:554-567. [PMID: 31294637 DOI: 10.1080/03008207.2019.1631299] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Purpose: To investigate the protective effect of naringin (Nar) on H2O2-induced apoptosis of nucleus pulposus-derived mesenchymal stem cells (NPMSC) and the potential mechanism in this process. Methods: Rat NPMSC were cultured in MSC culture medium or culture medium with different concentrations of H2O2. Nar or the combination of Nar and LY294002 was added into the culture medium to investigate the effects of Nar. Cell viability was evaluated by cell counting kit-8 (CCK-8) assay. The apoptosis rate was determined using Annexin V/PI dual staining and terminal deoxynucleotide transferase-mediated dUTP nick end labeling (TUNEL) assays. Additionally, the levels of reactive oxygen species (ROS) and mitochondrial membrane potential (MMP) were analyzed by flow cytometry. ATP level in NPMSC was analyzed via ATP detection kit. Mitochondrial ultrastructure change was observed through transmission electron microscope (TEM). Levels of apoptosis-associated molecules (cleaved caspase-3, Bax and Bcl-2) were evaluated via RT-PCR and western blot, respectively. Results: The cells isolated from NP met the criteria for MSC. H2O2 significantly promoted NPMSC apoptosis in a dose and time-dependent manner. Nar showed no cytotoxicity effect on NPMSC up to a concentration of 100 μM for 24 h. Nar exhibited protective effects against H2O2-induced NPMSC apoptosis including apoptosis rate, expressions of proapoptosis and antiapoptosis related genes and protein. Nar could also alleviate H2O2-induced mitochondrial dysfunction of increased mitochondrial ROS production, reduced MMP, decreased intracellular ATP and mitochondrial ultrastructure change. However, these protected effects were inhibited after LY294002 treatment. Conclusions: Our results demonstrated that Nar efficiently attenuated H2O2-induced NPMSC apoptosis and mitochondrial dysfunction. The activation of ROS-mediated PI3K/Akt pathway may be the potential mechanism in this process.
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Affiliation(s)
- Li-Ping Nan
- Department of Orthopedics, Dalian Medical University , Dalian, Liaoning, China.,Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Feng Wang
- Department of Orthopedics, Dalian Medical University , Dalian, Liaoning, China.,Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Di Ran
- College of Veterinary Medicine, Yangzhou University , Yangzhou, China
| | - Shi-Feng Zhou
- Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Yang Liu
- Department of Orthopedics, Dalian Medical University , Dalian, Liaoning, China.,Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Zhen Zhang
- Department of Orthopedics, Dalian Medical University , Dalian, Liaoning, China.,Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Ze-Nan Huang
- Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Ze-Yu Wang
- Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Jing-Cheng Wang
- Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Xin-Min Feng
- Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
| | - Liang Zhang
- Department of Orthopedics, Clinical Medical College of Yangzhou University , Yangzhou, Jiangsu, China
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21
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Huang Y, Huang L, Li L, Ge Z, Feng G, Liu L, Song Y. MicroRNA-25-3p therapy for intervertebral disc degeneration by targeting the IL-1β/ZIP8/MTF1 signaling pathway with a novel thermo-responsive vector. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1500. [PMID: 33313245 PMCID: PMC7729380 DOI: 10.21037/atm-20-6595] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Background MicroRNAs play important roles in intervertebral disc degeneration (IDD). The therapeutic effects of miRNA-25-3p on IDD and underlying mechanism are unclear. Methods Normal and degenerated nuclear pulposus (NP) tissue were collected. Primary NP cells were isolated and treated with different concentrations of interleukin-1β (IL-1β). IL-1β treated NP cells were interfered with miRNA-25-3p. Associated proteins IL-1β, ZIP8, MTF1, extracellular matrix (ECM) degrading enzymes MMP3, MMP13, ADAMTS5, ECM proteins type II collagen, aggrecan and MiRNA-25-3p were detected by western blotting or qRT-PCR method. Dual luciferase reporter assays were performed to determine potential targets MTF1 of miRNA-25-3p. In vitro miRNA-25-3p transfection efficiency of thermos-responsive vector was observed by fluorescence microscopy. Animal studies were conducted to observe the therapeutic effects of miRNA-25-3p mimic delivered by thermo-responsive vector. Results Compared with normal NP tissues, IL-1β, ZIP8 and MTF1 significantly increased and miRNA-25-3p significantly decreased in degenerated tissues. IL-1β promotes the expression of ZIP8 and nuclear translocation of MTF1 in NP cells. Ultimately, it promotes expression of ECM degrading enzymes and inhibits synthesis of ECM protein. MiRNA- 25-3p could inhibit the effects of IL-1β and the expression of ECM degrading enzymes, and recover the expression of ECM protein. Further investigation showed MTF1 was a target protein of miRNA-25-3p. The thermo-responsive vector could effectively deliver miRNA-25-3p into NP cells. Animal studies demonstrated miRNA-25-3p delivered by the thermo-responsive vector can delay progression of IDD Conclusions The thermo-responsive vector delivering miRNA-25-3p could delay the progression of IDD by inhibiting IL-1β-induced effects, and may be potential therapy for IDD in future.
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Affiliation(s)
- Yong Huang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Leizhen Huang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Li Li
- Department of Science and Technology, West China Hospital, Sichuan University, Chengdu, China
| | - Zhishen Ge
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Ganjun Feng
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Limin Liu
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Yueming Song
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
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22
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Zhu H, Chen G, Wang Y, Lin X, Zhou J, Wang Z, Suo N. Dimethyl fumarate protects nucleus pulposus cells from inflammation and oxidative stress and delays the intervertebral disc degeneration. Exp Ther Med 2020; 20:269. [PMID: 33199994 PMCID: PMC7664592 DOI: 10.3892/etm.2020.9399] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 09/10/2020] [Indexed: 12/21/2022] Open
Abstract
Lower back pain is a common problem in middle-aged and elderly people, and intervertebral disc degeneration (IVDD) is often the main cause. The present study aimed to explore the effects of dimethyl fumarate (DMF) on inflammation and oxidative stress in the intervertebral disc. C57/BL6 mice were used to construct an IVDD model by tail suspension and daily intraperitoneal injections of 10 mg/kg DMF were administered to analyze the effects of DMF on IVDD. In addition, human nucleus pulposus (NP) cells were cultured and stimulated cells with recombinant human IL-1β and DMF to examine the effects of DMF on inflammation and oxidative stress in NP cells. DMF significantly increased the intervertebral disc height index of mice and inhibited the degradation of the extracellular matrix of mouse NP tissue. In addition, DMF also decreased the expression of inflammatory factors [including IL-6, IL-8, matrix metalloproteinase (MMP)3 and MMP13] in NP cells. In terms of oxidative stress, DMF significantly increased the antioxidative stress response in NP cells and reduced endoplasmic reticulum stress. DMF also increased the activity of the nuclear factor erythroid 2-related factor (Nrf) 2/heme oxygenase (HO)-1 signaling pathway in NP cells and increased the phosphorylation of Akt. DMF also increased the anti-inflammatory and antioxidative ability of NP cells by promoting the activity of the Nrf2/HO-1 and PI3K/Akt signaling pathways, thus delaying IVDD.
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Affiliation(s)
- Hainian Zhu
- Department of Orthopedics, Qinghai Provincial People's Hospital, Xining, Qinghai 810007, P.R. China
| | - Gang Chen
- Department of Orthopedics, Qinghai Provincial People's Hospital, Xining, Qinghai 810007, P.R. China
| | - Yuhua Wang
- Department of Orthopedics, Qinghai Provincial People's Hospital, Xining, Qinghai 810007, P.R. China
| | - Xuchen Lin
- Department of Orthopedics, Qinghai Provincial People's Hospital, Xining, Qinghai 810007, P.R. China
| | - Jingyuan Zhou
- Department of Orthopedics, Qinghai Provincial People's Hospital, Xining, Qinghai 810007, P.R. China
| | - Zengshun Wang
- Department of Orthopedics, Qinghai Provincial People's Hospital, Xining, Qinghai 810007, P.R. China
| | - Nanangxiu Suo
- Department of Orthopedics, Qinghai Provincial People's Hospital, Xining, Qinghai 810007, P.R. China
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23
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ASIC1a activation induces calcium-dependent apoptosis of BMSCs under conditions that mimic the acidic microenvironment of the degenerated intervertebral disc. Biosci Rep 2020; 39:220895. [PMID: 31696219 PMCID: PMC6851507 DOI: 10.1042/bsr20192708] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 10/03/2019] [Accepted: 10/18/2019] [Indexed: 12/22/2022] Open
Abstract
Purpose: In the degenerated intervertebral disc (IVD), matrix acidity challenges transplanted bone marrow mesenchymal stem cells (BMSCs). The Ca2+-permeable acid-sensing ion channel 1a (ASIC1a) is responsible for acidosis-mediated tissue injury. The aim of our study was to confirm whether ASIC1a activation induces BMSC apoptosis under conditions that mimic the acidic microenvironment of the degenerated IVD. Methods: ASIC1a expression in rat BMSCs was investigated by real time-PCR, Western blot (WB) and immunofluorescence. The proliferation and apoptosis of BMSCs under acidic conditions were analyzed by MTT and TUNEL assays. Ca2+-imaging was used to assess the acid-induced increase in the intracellular Ca2+ concentration ([Ca2+]i). The activation of calpain and calcineurin was analyzed using specific kits, and WB analysis was performed to detect apoptosis-related proteins. Ultrastructural changes in BMSCs were observed using transmission electron microscopy (TEM). Results: Acid exposure led to the activation of ASIC1a and increased BMSC apoptosis. The Ca2+ imaging assay showed a significant increase in the [Ca2+]i in response to a solution at pH 6.0. However, BMSC apoptosis and [Ca2+]i elevation were alleviated in the presence of an ASIC1a inhibitor. Moreover, ASIC1a mediated the Ca2+ influx-induced activation of calpain and calcineurin in BMSCs. WB analysis and TEM revealed mitochondrial apoptosis, which was inhibited by an ASIC1a inhibitor, in BMSCs under acidic conditions. Conclusions: The mimical acidic microenvironment of the degenerated IVD can induce BMSC apoptosis by activating Ca2+-permeable ASIC1a. An acid-induced elevation of [Ca2+]i in BMSCs leads to the subsequent activation of calpain and calcineurin, further resulting in increased mitochondrial permeability and mitochondrial-mediated apoptosis.
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Sun Y, Lu Y, Saredy J, Wang X, Drummer Iv C, Shao Y, Saaoud F, Xu K, Liu M, Yang WY, Jiang X, Wang H, Yang X. ROS systems are a new integrated network for sensing homeostasis and alarming stresses in organelle metabolic processes. Redox Biol 2020; 37:101696. [PMID: 32950427 PMCID: PMC7767745 DOI: 10.1016/j.redox.2020.101696] [Citation(s) in RCA: 125] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/17/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023] Open
Abstract
Reactive oxygen species (ROS) are critical for the progression of cardiovascular diseases, inflammations and tumors. However, the mechanisms of how ROS sense metabolic stress, regulate metabolic pathways and initiate proliferation, inflammation and cell death responses remain poorly characterized. In this analytic review, we concluded that: 1) Based on different features and functions, eleven types of ROS can be classified into seven functional groups: metabolic stress-sensing, chemical connecting, organelle communication, stress branch-out, inflammasome-activating, dual functions and triple functions ROS. 2) Among the ROS generation systems, mitochondria consume the most amount of oxygen; and nine types of ROS are generated; thus, mitochondrial ROS systems serve as the central hub for connecting ROS with inflammasome activation, trained immunity and immunometabolic pathways. 3) Increased nuclear ROS production significantly promotes cell death in comparison to that in other organelles. Nuclear ROS systems serve as a convergent hub and decision-makers to connect unbearable and alarming metabolic stresses to inflammation and cell death. 4) Balanced ROS levels indicate physiological homeostasis of various metabolic processes in subcellular organelles and cytosol, while imbalanced ROS levels present alarms for pathological organelle stresses in metabolic processes. Based on these analyses, we propose a working model that ROS systems are a new integrated network for sensing homeostasis and alarming stress in metabolic processes in various subcellular organelles. Our model provides novel insights on the roles of the ROS systems in bridging metabolic stress to inflammation, cell death and tumorigenesis; and provide novel therapeutic targets for treating those diseases. (Word count: 246).
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Affiliation(s)
- Yu Sun
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Yifan Lu
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Jason Saredy
- Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Xianwei Wang
- Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Charles Drummer Iv
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Ying Shao
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Fatma Saaoud
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Keman Xu
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Ming Liu
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - William Y Yang
- Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Xiaohua Jiang
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA; Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Hong Wang
- Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Xiaofeng Yang
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA; Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA.
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25
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Sodium butyrate protects against oxidative stress in human nucleus pulposus cells via elevating PPARγ-regulated Klotho expression. Int Immunopharmacol 2020; 85:106657. [PMID: 32554208 DOI: 10.1016/j.intimp.2020.106657] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 05/15/2020] [Accepted: 05/29/2020] [Indexed: 02/06/2023]
Abstract
We investigated the involvement of klotho in the inhibition of oxidative stress by sodium butyrate (NaB) in human nucleus pulposus cells (NPCs). NPCs were pretreated with different concentrations of NaB for 2 h before stimulation with tert-butyl hydroperoxide (TBHP). NaB alleviated TBHP-induced oxidative injury in the NPCs, as evident by the reduced accumulation of mitochondrial superoxide, intracellular reactive oxygen species, and malondialdehyde, and increased activities of superoxide dismutase and glutathione peroxidase. Flow cytometry and western blotting showed that TBHP-induced apoptosis of NPCs was inhibited by NaB. NaB also reduced the TBHP-induced release of proteases that degrade the extracellular matrix, including matrix metalloproteinases 3 and 13, and ADAMTS-4 (a disintegrin and metalloproteinase with thrombospondin motifs 4). Intriguingly, NaB significantly reversed TBHP-induced klotho suppression. However, the protective effects of NaB on NPCs were abolished by klotho-specific small interfering RNA (siRNA). TBHP stimulation had no obvious effects on total or nuclear expression of peroxisome proliferator-activated receptor γ (PPARγ), but significantly reduced PPARγ acetylation and transcriptional activity, which were restored by NaB. TBHP stimulation also promoted the nuclear translocation of histone deacetylase 3 (HDAC3) and enhanced the association between HDAC3 and PPARγ in the nucleus, but this interaction was substantially disrupted by NaB. siRNA-induced HDAC3 knockdown significantly increased PPARγ acetylation and transactivation, reversing the TBHP-induced suppression of klotho. Therefore, NaB alleviates TBHP-induced oxidative stress in human NPCs by elevating PPARγ-regulated klotho expression. HDAC3 may be a critical HDAC subtype that mediates the regulation of PPARγ activity by NaB under oxidative stress.
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26
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Zhao Z, Li Y, Wang M, Jin Y, Liao W, Zhao Z, Fang J. Mitochondrial DNA haplogroups participate in osteoarthritis: current evidence based on a meta-analysis. Clin Rheumatol 2020; 39:1027-1037. [PMID: 31897963 DOI: 10.1007/s10067-019-04890-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 12/06/2019] [Accepted: 12/11/2019] [Indexed: 02/06/2023]
Abstract
Mitochondrial genes' variants encoded in both the nuclear and mitochondrial genomes can disrupt mitochondrial function, resulting in losing of cartilage and generating osteoarthritis (OA). However, the association between mtDNA haplogroups and OA still lacks strength evidence supporting. The aim of this meta-analysis is to assess the role of mtDNA haplogroups in speculating the pathogenesis and progression of OA. PubMed, Embase, the Cochrane Central Register of Controlled Trials, and World Health Organization clinical trials' registry center were searched to identify relevant studies up to the end of March 2019. Inclusion citations required a case-control or cohort study to demonstrate the association between mtDNA haplogroups and OA's prevalence or progression. Title, abstract, and full-text screening were sequentially assessed by three reviewers. Data were analyzed using STATA. Besides, publication bias and meta-regression analysis were conducted to explore potential heterogeneities. We collected results from 7 articles. The cluster TJ cases showed a lower proportion in OA cases (RR = 0.83, 95% CI 0.72, 0.96). However, there is no evidence that revealed this kind of impact originated from neither type J nor type T individually. Besides, the type B and G analyses among Asian populations also elucidated a negative association. Moreover, the cluster TJ of mtDNA haplogroups revealed a lower cumulative probability of radiographic OA progression (ES = 0.77, 95% CI 0.63, 0.94), which was contributed by type T (ES = 0.61, 95% CI 0.45, 0.82).The mtDNA haplogroups do have impacts on the prevalence and progression of OA. Cluster TJ could help reduce the prevalence and slow down the radiographic changes; however, the impacts came from type J and type T, respectively.
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Affiliation(s)
- Zhenxing Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd section, South Renmin Road, Chengdu, 610041, Sichuan, China
| | - Yifei Li
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Ministry of Education Key Laboratory of Women and Children's Diseases and Birth Defects, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Mengjiao Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd section, South Renmin Road, Chengdu, 610041, Sichuan, China
| | - Ying Jin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd section, South Renmin Road, Chengdu, 610041, Sichuan, China
| | - Wen Liao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd section, South Renmin Road, Chengdu, 610041, Sichuan, China
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd section, South Renmin Road, Chengdu, 610041, Sichuan, China
| | - Jie Fang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd section, South Renmin Road, Chengdu, 610041, Sichuan, China.
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27
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Rodríguez-Enríquez S, Marín-Hernández Á, Gallardo-Pérez JC, Pacheco-Velázquez SC, Belmont-Díaz JA, Robledo-Cadena DX, Vargas-Navarro JL, Corona de la Peña NA, Saavedra E, Moreno-Sánchez R. Transcriptional Regulation of Energy Metabolism in Cancer Cells. Cells 2019; 8:cells8101225. [PMID: 31600993 PMCID: PMC6830338 DOI: 10.3390/cells8101225] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/19/2019] [Accepted: 10/01/2019] [Indexed: 01/17/2023] Open
Abstract
Cancer development, growth, and metastasis are highly regulated by several transcription regulators (TRs), namely transcription factors, oncogenes, tumor-suppressor genes, and protein kinases. Although TR roles in these events have been well characterized, their functions in regulating other important cancer cell processes, such as metabolism, have not been systematically examined. In this review, we describe, analyze, and strive to reconstruct the regulatory networks of several TRs acting in the energy metabolism pathways, glycolysis (and its main branching reactions), and oxidative phosphorylation of nonmetastatic and metastatic cancer cells. Moreover, we propose which possible gene targets might allow these TRs to facilitate the modulation of each energy metabolism pathway, depending on the tumor microenvironment.
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Affiliation(s)
| | | | | | | | | | | | | | - Norma Angélica Corona de la Peña
- Unidad de Investigación Médica en Trombosis, Hemostasia y Aterogénesis, Hospital General Regional Carlos McGregor-Sánchez, México CP 03100, Mexico.
| | - Emma Saavedra
- Departamento de Bioquímica, Instituto Nacional de Cardiología, México 14080, Mexico.
| | - Rafael Moreno-Sánchez
- Departamento de Bioquímica, Instituto Nacional de Cardiología, México 14080, Mexico.
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28
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Abstract
STUDY DESIGN An in vivo and in vitro study of the correlation between Paraoxonase 1 (PON1) and intervertebral disc degeneration (IVDD). OBJECTIVE The aim of this study is to clarify the expression and role of PON1 on the process of IVDD. SUMMARY OF BACKGROUND DATA IVDD is responsible for most of the spinal degenerative diseases. Inflammation and oxidative stress can deteriorate the living environment of nucleus pulposus (NP) cells, leading to IVDD. PON1 is an enzyme reported to have anti-inflammatory and anti-oxidative effects. There is no study about the correlation of PON1 expression with IVDD. METHODS Immunohistochemical (IHC), hematoxylin and eosin (H&E) staining, and Western blot examined the expression of PON1 in 88 human disc samples (male: female 43: 45) and rat models (n = 5 each group). The level of PON1 is measured in the tumor necrosis factor (TNF)-α and oxidative stress (H2O2)-induced degenerative NP cell models using Western blot and reverse transcription-polymerase chain reaction (RT-qPCR). The TNF-α, interleukin (IL)-1β, Mito superoxide (SOX), aggrecan, and collagen II are detected in nucleus pulposus (NP) cells transfected with si-RNA of PON1 using Enzyme-Linked Immunosorbent Assay (ELISA), mitoSOX staining Western blot, and RT-qPCR. RESULTS The expression of PON1 is significantly suppressed in human and rat degenerative intervertebral discs. The level of PON1 is significantly decreased in TNF-α and oxidative stress (H2O2)-induced degenerative NP cell models. ELISA results show that the level of TNF-α and IL-1β obviously increased; Mito SOX staining indicates that the Mito SOX fluorescence significantly increased, and the expression of aggrecan and collagen reduced in NP cells transfected with si-RNA of PON1. CONCLUSION Our study indicates that low PON1 expression is predictive of severe IVDD; PON1 plays an important role of keeping the homeostatic balance of intervertebral discs, and therapeutic approach regarding PON1 may be helpful to alleviate IVDD in the future. LEVEL OF EVIDENCE N/A.
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29
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Wang K, Hu S, Wang B, Wang J, Wang X, Xu C. Genistein protects intervertebral discs from degeneration via Nrf2-mediated antioxidant defense system: An in vitro and in vivo study. J Cell Physiol 2019; 234:16348-16356. [PMID: 30779107 DOI: 10.1002/jcp.28301] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/23/2018] [Accepted: 01/10/2019] [Indexed: 02/06/2023]
Abstract
Oxidative stress has been reported to be closely associated with the development of intervertebral disc degeneration (IDD). IDD is one of the major causes of low back pain. Genistein (GES), one of the main isoflavones of soybean, has been shown to exert multiple biological functions on different diseases. Here, we tested the therapeutic potential of GES for IDD. In vitro experiments, we confirmed GES was nontoxic to rat nucleus pulposus cells (NPCs) within the concentration of 100 μM. Furthermore, GES was able to suppress apoptosis in tert-butyl hydroperoxide (TBHP)-treated NPCs. In the aspect of extracellular matrix (ECM), GES not only reduced metalloproteinase-13 (MMP-13) and a disintegrin-like and MMP thrombospondin type 1 motif 5 expression, but also increased aggrecan and type II collagen levels. Also, we found GES might rescue TBHP-induced NPCs degeneration by enhancing Nrf2-mediated antioxidant defense system. Silencing Nrf2 partly abolished the protective effects of GES on apoptosis and ECM disruption in TBHP-treated NPCs. Correspondingly, GES ameliorated IDD in a rat model by preserving morphology of degenerative intervertebral discs and promoting Nrf2 expression. To sum up, our study suggests that GES exerts protective effects in NPCs against degeneration and reveals the underlying mechanism of GES on Nrf2 activation in NPCs.
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Affiliation(s)
- Ke Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Sunli Hu
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Ben Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Jianle Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Xiangyang Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Cong Xu
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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Pan X, Zhao Y, Cheng T, Zheng A, Ge A, Zang L, Xu K, Tang B. Monitoring NAD(P)H by an ultrasensitive fluorescent probe to reveal reductive stress induced by natural antioxidants in HepG2 cells under hypoxia. Chem Sci 2019; 10:8179-8186. [PMID: 31857884 PMCID: PMC6836941 DOI: 10.1039/c9sc02020a] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/14/2019] [Indexed: 12/15/2022] Open
Abstract
An ultrasensitive fluorescent probe for monitoring NAD(P)H and revealing reductive stress induced by natural antioxidants in HepG2 cells under hypoxia.
Reductive stress, the opposite of oxidative stress, represents a disorder in the redox balance state which is harmful to biological systems. For decades, the role of oxidative stress in tumor therapy has been the focus of attention, while the effects of reductive stress have been rarely studied. Here, we report the anti-cancer effects of reductive stress induced by three natural antioxidants (resveratrol, curcumin and celastrol). Considering the fact that the solid tumor microenvironment suffers from hypoxia, we performed cell experiments under hypoxic conditions. In order to observe the reductive stress, we first developed an ultrasensitive fluorescent probe (TCF-MQ) for specifically imaging NAD(P)H which is a marker of reductive stress. TCF-MQ responded to NAD(P)H rapidly and exhibited high sensitivity with a detection limit of 6 nM. With the help of TCF-MQ, we found that upon the treatment of HepG2 cells with pharmacological doses of three natural antioxidants under hypoxic conditions, high levels of NAD(P)H were produced before cell death. The excess NAD(P)H resulted in reductive stress instead of oxidative stress. In contrast, under normoxic conditions, there was no reductive stress involved in the process of cell death induced by three natural antioxidants. Therefore, we hypothesize that the mechanism of cancer cell death induced by natural antioxidants under hypoxia should be attributed to the reductive stress.
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Affiliation(s)
- Xiaohong Pan
- College of Chemistry, Chemical Engineering and Materials Science , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Shandong Normal University , Jinan 250014 , P. R. China . ; .,Department of Pharmaceutical Sciences , Binzhou Medical University , Yantai 264003 , P. R. China
| | - Yuehui Zhao
- College of Chemistry, Chemical Engineering and Materials Science , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Shandong Normal University , Jinan 250014 , P. R. China . ;
| | - Tingting Cheng
- Department of Pharmaceutical Sciences , Binzhou Medical University , Yantai 264003 , P. R. China
| | - Aishan Zheng
- College of Chemistry, Chemical Engineering and Materials Science , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Shandong Normal University , Jinan 250014 , P. R. China . ;
| | - Anbin Ge
- Department of Pharmaceutical Sciences , Binzhou Medical University , Yantai 264003 , P. R. China
| | - Lixin Zang
- College of Chemistry, Chemical Engineering and Materials Science , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Shandong Normal University , Jinan 250014 , P. R. China . ;
| | - Kehua Xu
- College of Chemistry, Chemical Engineering and Materials Science , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Shandong Normal University , Jinan 250014 , P. R. China . ;
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science , Key Laboratory of Molecular and Nano Probes , Ministry of Education , Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Shandong Normal University , Jinan 250014 , P. R. China . ;
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Li Z, Shao Z, Chen S, Huang D, Peng Y, Chen S, Ma K. TIGAR impedes compression-induced intervertebral disc degeneration by suppressing nucleus pulposus cell apoptosis and autophagy. J Cell Physiol 2019; 235:1780-1794. [PMID: 31317559 DOI: 10.1002/jcp.29097] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 06/27/2019] [Indexed: 12/19/2022]
Abstract
To investigate whether TP53-induced glycolysis and apoptosis regulator (TIGAR) participates in compression-induced intervertebral disc (IVD) degeneration, and to determine the regulatory effect of TIGAR on nucleus pulposus (NP) cell autophagy and apoptosis following compression-induced injuries. IVD tissues were collected from human patients undergoing surgery (n = 20) and skeletally mature Sprague-Dawley rats (n = 15). Initially, the effect of compression on the expression of TIGAR was evaluated with in vivo and in vitro models. In addition, TIGAR was silenced to investigate the regulatory effect of TIGAR on compression-induced intracellular reactive oxygen species (ROS) levels, autophagy, and apoptosis in rat NP cells. Furthermore, the P53 inhibitor pifithrin-α (PFTα) and SP1 inhibitor mithramycin A were employed to detect expression level changes of TIGAR and autophagy-associated target molecules. TIGAR expression of NP cells increased gradually in human degenerative IVDs and in rat NP cells under compression both in vivo and in vitro. TIGAR knockdown enhanced compression-induced intracellular ROS generation and the NADPH/NADP+ and GSH/GSSG ratios. Moreover, TIGAR knockdown amplified the compression-induced caspase-3 activation and the apoptosis rate of rat NP cells. Likewise, knockdown of TIGAR significantly accelerated LC3B expression and autophagosome formation in rat NP cells during compression-induced injuries. The results also established that mithramycin A could inhibit TIGAR expression and autophagy levels in NP cells under compression conditions, while PFTα had no similar effect. Our data demonstrated that TIGAR acted as an important endogenous negative regulator of ROS levels, which might inhibit compression-induced apoptosis and autophagy through SP1-dependent mechanisms.
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Affiliation(s)
- Zhiliang Li
- Department of Orthopaedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Songfeng Chen
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Donghua Huang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yizhong Peng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sheng Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kaige Ma
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Liu Y, Li Y, Huang ZN, Wang ZY, Nan LP, Wang F, Zhou SF, Wang JC, Feng XM, Zhang L. The effect of intervertebral disc degenerative change on biological characteristics of nucleus pulposus mesenchymal stem cell: an in vitro study in rats. Connect Tissue Res 2019; 60:376-388. [PMID: 31119993 DOI: 10.1080/03008207.2019.1570168] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Purpose: To evaluate the change on biological characteristics of mesenchymal stem cell (MSC) derived from normal and degenerative intervertebral disc (IVD). Methods: MSC was isolated from normal and degenerative IVD rat model. Immunophenotype detected by flow cytometric analysis, expression of stemness genes determined by reverse-transcription polymerase chain reaction (RT-PCR) and osteogenic, adipogenic and chondrogenic differentiation were compared between MSC derived from normal IVD (N-NPMSC) and degenerative IVD (D-NPMSC). The biological characteristics including cell proliferation, colony formation, apoptosis, caspase-3 activity and mRNA and protein expressions of hypoxia inducible factor-1α (HIF-1α), glucose transporter 1 (GLUT-1), vascular endothelial growth factor (VEGF), silent information regulator protein 1 (SIRT1) and silent information regulator protein 6 (SIRT6) were compared between N-NPMSC and D-NPMSC. Results: Both of N-NPMSC and D-NPMSC highly expressed CD105, CD90 and CD73, and lower expressed CD34 and CD45. There was no significant difference in cell morphology and multipotent differentiation ability between N-NPMSC and D-NPMSC. D-NPMSC showed significantly lower expressions of stemness genes, cell proliferation and colony formation ability. D-NPMSC also exhibited increased cell apoptosis rate and caspase-3 expression, and significantly lower expressions of HIF-1α, GLUT-1, VEGF, SIRT1 and SIRT6 in mRNA and protein levels compared with N-NPMSC. Conclusions: N-NPMSC showed significantly higher proliferation rate, better colony forming and stemness maintenance ability, whereas reduced cell apoptosis rate compared with D-NPMSC. HIF-1α-mediated signal pathway may be involved in the regulation of NPMSC proliferation. These findings indicated that degenerative change of IVD should be taken into account when selecting a source of NPMSC for clinical application.
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Affiliation(s)
- Yang Liu
- a Department of Orthopedics , Dalian Medical University , Dalian , Liaoning , China
| | - Yan Li
- b Department of Internal Medicine , Dalian Medical University , Dalian , Liaoning , China
| | - Ze-Nan Huang
- c Department of Orthopedics , Clinical Medical College of Yangzhou University , Yangzhou , Jiangsu , People's Republic of China
| | - Ze-Yu Wang
- c Department of Orthopedics , Clinical Medical College of Yangzhou University , Yangzhou , Jiangsu , People's Republic of China
| | - Li-Ping Nan
- a Department of Orthopedics , Dalian Medical University , Dalian , Liaoning , China
| | - Feng Wang
- a Department of Orthopedics , Dalian Medical University , Dalian , Liaoning , China
| | - Shi-Feng Zhou
- c Department of Orthopedics , Clinical Medical College of Yangzhou University , Yangzhou , Jiangsu , People's Republic of China
| | - Jing-Cheng Wang
- c Department of Orthopedics , Clinical Medical College of Yangzhou University , Yangzhou , Jiangsu , People's Republic of China
| | - Xin-Min Feng
- c Department of Orthopedics , Clinical Medical College of Yangzhou University , Yangzhou , Jiangsu , People's Republic of China
| | - Liang Zhang
- c Department of Orthopedics , Clinical Medical College of Yangzhou University , Yangzhou , Jiangsu , People's Republic of China
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Zheng G, Pan Z, Zhan Y, Tang Q, Zheng F, Zhou Y, Wu Y, Zhou Y, Chen D, Chen J, Wang X, Gao W, Xu H, Tian N, Zhang X. TFEB protects nucleus pulposus cells against apoptosis and senescence via restoring autophagic flux. Osteoarthritis Cartilage 2019; 27:347-357. [PMID: 30414849 DOI: 10.1016/j.joca.2018.10.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/30/2018] [Accepted: 10/24/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Excessive apoptosis and senescence of nucleus pulposus (NP) cells are major pathological changes in intervertebral disc degeneration (IVDD) development; previous studies demonstrated pharmacologically or genetically stimulation of autophagy may inhibit apoptosis and senescence in NP cells. Transcription factor EB (TFEB) is a master regulator of autophagic flux via initiating autophagy-related genes and lysosomal biogenesis. This study was performed to confirm whether TFEB was involved in IVDD development and its mechanism. METHODS TFEB activity was detected in NP tissues in puncture-induced rat IVDD model by immunofluorescence as well as in tert-Butyl hydroperoxide (TBHP), the reactive oxygen species (ROS) donor to induce oxidative stress, treated NP cells by western blot. After TFEB overexpression in NP cells with lentivirus transfection, autophagic flux, apoptosis and senescence percentage were assessed. In in vivo study, the lentivirus-normal control (LV-NC) or lentivirus-TFEB (LV-TFEB) were injected into the center space of the NP tissue, after 4 or 8 weeks, Magnetic resonance imaging (MRI), X ray, Hematoxylin-Eosin (HE) and Safranin O staining were used to evaluate IVDD grades. RESULTS The nuclear localization of TFEB declined in degenerated rat NP tissue as well as in TBHP treated NP cells. Applying lentivirus to transfect NP cells, TFEB overexpression restored the TBHP-induced autophagic flux blockage and protected NP cells against apoptosis and senescence; these protections of TFEB are diminished by chloroquine-medicated autophagy inhibition. Furthermore, TFEB overexpression ameliorates the puncture-induced IVDD development in rats. CONCLUSIONS Experimental IVDD inhibited the TFEB activity. TFEB overexpression suppressed TBHP-induced apoptosis and senescence via autophagic flux stimulation in NP cell and alleviates puncture-induced IVDD development in vivo.
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Affiliation(s)
- Gang Zheng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China
| | - Zongyou Pan
- Department of Orthopaedics, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang Province, China
| | - Yu Zhan
- Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Qian Tang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China
| | - Fanghong Zheng
- The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Yifei Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Yaosen Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Yulong Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China
| | - Deheng Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China
| | - Jiaoxiang Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Weiyang Gao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Huazi Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China.
| | - Naifeng Tian
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China.
| | - Xiaolei Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Chinese Orthopaedic Regenerative Medicine Society, China.
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Zhang Z, Lin J, Tian N, Wu Y, Zhou Y, Wang C, Wang Q, Jin H, Chen T, Nisar M, Zheng G, Xu T, Gao W, Zhang X, Wang X. Melatonin protects vertebral endplate chondrocytes against apoptosis and calcification via the Sirt1-autophagy pathway. J Cell Mol Med 2018; 23:177-193. [PMID: 30353656 PMCID: PMC6307776 DOI: 10.1111/jcmm.13903] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/18/2018] [Indexed: 02/06/2023] Open
Abstract
Melatonin is reportedly associated with intervertebral disc degeneration (IDD). Endplate cartilage is vitally important to intervertebral discs in physiological and pathological conditions. However, the effects and mechanism of melatonin on endplate chondrocytes (EPCs) are still unclear. Herein, we studied the effects of melatonin on EPC apoptosis and calcification and elucidated the underlying mechanism. Our study revealed that melatonin treatment decreases the incidence of apoptosis and inhibits EPC calcification in a dose-dependent manner. We also found that melatonin upregulates Sirt1 expression and activity and promotes autophagy in EPCs. Autophagy inhibition by 3-methyladenine reversed the protective effect of melatonin on apoptosis and calcification, while the Sirt1 inhibitor EX-527 suppressed melatonin-induced autophagy and the protective effects of melatonin against apoptosis and calcification, indicating that the beneficial effects of melatonin in EPCs are mediated through the Sirt1-autophagy pathway. Furthermore, melatonin may ameliorate IDD in vivo in rats. Collectively, this study revealed that melatonin reduces EPC apoptosis and calcification and that the underlying mechanism may be related to Sirt1-autophagy pathway regulation, which may help us better understand the association between melatonin and IDD.
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Affiliation(s)
- Zengjie Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Jialiang Lin
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Naifeng Tian
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Yaosen Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Yifei Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Chenggui Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Qingqing Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Haiming Jin
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Tingting Chen
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Majid Nisar
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Gang Zheng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Tianzhen Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,The Third Affiliated Hospital and Ruian People's Hospital of Wenzhou Medical University, Ruian, Zhejiang Province, China
| | - Weiyang Gao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Xiaolei Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Chinese Orthopaedic Regenerative Medicine Society, Zhejiang University of School Medicne, HangZhou, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
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Zhang Z, Xu T, Chen J, Shao Z, Wang K, Yan Y, Wu C, Lin J, Wang H, Gao W, Zhang X, Wang X. Parkin-mediated mitophagy as a potential therapeutic target for intervertebral disc degeneration. Cell Death Dis 2018; 9:980. [PMID: 30250268 PMCID: PMC6155159 DOI: 10.1038/s41419-018-1024-9] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/26/2018] [Accepted: 09/03/2018] [Indexed: 12/11/2022]
Abstract
Intervertebral disc degeneration (IDD) is a complicated pathological condition blamed for low back pain. Mitochondrion is of vital importance for cellular homeostasis, and mitochondrial dysfunction is considered to be one of the major causes of cellular damage. Mitophagy is a cellular process to eliminate impaired mitochondria and showed protective effects in various diseases; however, its role in IDD is still not clear. Here, we explore the role of Parkin-mediated mitophagy in IDD. In this study, we found that Parkin was upregulated in degenerative nucleus pulposus (NP) tissues in vivo as well as in TNF-α stimulated NP cells in vitro. Knockdown of Parkin by siRNA showed that Parkin is crucial for apoptosis and mitochondrion homeostasis in NP cells. Further study showed that upregulation of Parkin by salidroside may eliminate impaired mitochondria and promote the survival of NP cells through activation of mitophagy in vitro. In in vivo study, we found that salidroside could inhibit the apoptosis of NP cells and ameliorate the progression of IDD. These results suggested that Parkin is involved in the pathogenesis of IDD and may be a potential therapeutic target for IDD.
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Affiliation(s)
- Zengjie Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Tianzhen Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China.,The Third Affiliated Hospital and Ruian People's Hospital of Wenzhou Medical University, Wansong Road 108#, Ruian, Zhejiang Province, China
| | - Jiaoxiang Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Zhenxuan Shao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Ke Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Yingchao Yan
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Congcong Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Jialiang Lin
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Haoli Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Weiyang Gao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Xiaolei Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China. .,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China. .,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China. .,Chinese Orthopaedic Regenerative Medicine Society, Ruian, China.
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, West Xueyuan Road 109#, Wenzhou, 325027, Zhejiang Province, China. .,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, China. .,The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China.
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