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Wang HS, Lin S, Yu HM. Exosome-mediated Repair of Intervertebral Disc Degeneration: The Potential Role of miRNAs. Curr Stem Cell Res Ther 2024; 19:798-808. [PMID: 37150986 DOI: 10.2174/1574888x18666230504094233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/04/2023] [Accepted: 03/07/2023] [Indexed: 05/09/2023]
Abstract
Intervertebral disc degeneration (IVDD) is a serious condition that manifests as low back pain, intervertebral disc protrusion, and spinal canal stenosis. At present, the main treatment methods for IVDD are surgical interventions such as discectomy, total disc replacement, and spinal fusion. However, these interventions have shown limitations, such as recurrent lumbar disc herniation after discectomy, lesions in adjacent segments, and failure of fixation. To overcome these shortcomings, researchers have been exploring stem cell transplantation therapy, such as mesenchymal stem cell (MSC) transplantation, but the treatment results are still controversial. Therefore, researchers are in search of new methods that are more efficient and have better outcomes. The exosomes from stem cells contain a variety of bioactive molecules that mediate cell interactions, and these components have been investigated for their potential therapeutic role in the repair of various tissue injuries. Recent studies have shown that MSC-derived miRNAs in exosomes and vesicles have therapeutic effects on nucleus pulposus cells, annulus fibrosus, and cartilage endplate. miRNAs play a role in many cell activities, such as cell proliferation, apoptosis, and cytokine release, by acting on mRNA translation, and they may have immense therapeutic potential, especially when combined with stem cell therapy. This article reviews the current status of research on intervertebral disc repair, especially with regard to the latest research findings on the molecular biological mechanisms of miRNAs in MSC-derived exosomes in intervertebral disc repair.
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Affiliation(s)
- Han-Shi Wang
- Department of Orthopaedic, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Shu Lin
- Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
- Group of Neuroendocrinology, Garvan Institute of Medical Research, Sydney, Australia
| | - Hai-Ming Yu
- Department of Orthopaedic, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
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2
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Li W, Li X, Gao Y, Xiong C, Tang Z. Emerging roles of RNA binding proteins in intervertebral disc degeneration and osteoarthritis. Orthop Surg 2023; 15:3015-3025. [PMID: 37803912 PMCID: PMC10694020 DOI: 10.1111/os.13851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/06/2023] [Accepted: 07/19/2023] [Indexed: 10/08/2023] Open
Abstract
The etiology of intervertebral disc degeneration (IDD) and osteoarthritis (OA) is complex and multifactorial. Both predisposing genes and environmental factors are involved in the pathogenesis of IDD and OA. Moreover, epigenetic modifications affect the development of IDD and OA. Dysregulated phenotypes of nucleus pulposus (NP) cells and OA chondrocytes, including apoptosis, extracellular matrix disruption, inflammation, and angiogenesis, are involved at all developmental stages of IDD and OA. RNA binding proteins (RBPs) have recently been recognized as essential post-transcriptional regulators of gene expression. RBPs are implicated in many cellular processes, such as proliferation, differentiation, and apoptosis. Recently, several RBPs have been reported to be associated with the pathogenesis of IDD and OA. This review briefly summarizes the current knowledge on the RNA-regulatory networks controlled by RBPs and their potential roles in the pathogenesis of IDD and OA. These initial findings support the idea that specific modulation of RBPs represents a promising approach for managing IDD and OA.
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Affiliation(s)
- Wen Li
- Department of EmergencyGeneral Hospital of Central Theater Command of PLAWuhanChina
| | - Xing‐Hua Li
- Department of EmergencyGeneral Hospital of Central Theater Command of PLAWuhanChina
| | - Yang Gao
- Department of OrthopaedicGeneral Hospital of Central Theater Command of PLAWuhanChina
| | - Cheng‐Jie Xiong
- Department of OrthopaedicGeneral Hospital of Central Theater Command of PLAWuhanChina
| | - Zhong‐Zhi Tang
- Department of EmergencyGeneral Hospital of Central Theater Command of PLAWuhanChina
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Tang H, Zhang S, Lu X, Geng T. Effects of puerarin on the intervertebral disc degeneration and biological characteristics of nucleus pulposus cells. PHARMACEUTICAL BIOLOGY 2023; 61:12-22. [PMID: 36524765 PMCID: PMC9762855 DOI: 10.1080/13880209.2022.2147548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 09/21/2022] [Accepted: 11/05/2022] [Indexed: 06/17/2023]
Abstract
CONTEXT Intervertebral disc degeneration (IDD) is the pathological basis of spinal degenerative diseases. Puerarin (PU) is an isoflavonoid with functions and medicinal properties. OBJECTIVE To explore the effect of PU on IDD and its potential mechanism of action. MATERIALS AND METHODS Sprague-Dawley (SD) rats were divided into sham, IDD, low PU, and high PU groups. Rat nucleus pulposus cells (NPCs) were isolated and divided into control, IL-1β, 100 and 200 μmol/mL PU, TAK-242 (TLR4 inhibitor), or 200 μmol/mL PU + LPS (TLR4 activator) groups. The water content, inflammatory factors, proliferation activity, TLR4/NF-κB pathway activity, apoptosis rate, protein expression of apoptosis, and histology of the extracellular matrix (ECM) were analysed. RESULTS In vivo: Compared with the IDD group, disorganization of intervertebral disc tissue was significantly improved, water content (2.80 ± 0.24 mg, 3.91 ± 0.31 mg vs. 2.02 ± 0.21 mg) and expression levels of collagen II and aggrecan were significantly increased, and the levels of inflammatory factors and the expression levels of TLR4, MyD88, and p-p65 were significantly decreased in IDD rats treated with PU. In vitro: Compared with the IL-1β group, the proliferation activity of IL-1β-treated NPCs and the expression of collagen II and aggrecan were significantly increased, while the apoptosis rate, levels of inflammatory factors, and the expression levels of TLR4, MyD88, and p-p65 were significantly decreased in IL-1β-treated NPCs treated with PU. LPS reversed the biological function changes of IL-1β-treated NPCs induced by PU. CONCLUSIONS PU can delay the progression of IDD by inhibiting activation of the TLR4/NF-κB pathway.
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Affiliation(s)
- Hengtao Tang
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Song Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinchang Lu
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Tongyu Geng
- Department of Orthopaedics, Shangqiu First People’s Hospital, Shangqiu, China
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Zou X, Zhang X, Han S, Wei L, Zheng Z, Wang Y, Xin J, Zhang S. Pathogenesis and therapeutic implications of matrix metalloproteinases in intervertebral disc degeneration: A comprehensive review. Biochimie 2023; 214:27-48. [PMID: 37268183 DOI: 10.1016/j.biochi.2023.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 05/22/2023] [Accepted: 05/22/2023] [Indexed: 06/04/2023]
Abstract
Intervertebral disc (IVD) degeneration (IDD) is a common disorder that affects the spine and is a major cause of lower back pain (LBP). The extracellular matrix (ECM) is the structural foundation of the biomechanical properties of IVD, and its degradation is the main pathological characteristic of IDD. Matrix metalloproteinases (MMPs) are a group of endopeptidases that play an important role in the degradation and remodeling of the ECM. Several recent studies have shown that the expression and activity of many MMP subgroups are significantly upregulated in degenerated IVD tissue. This upregulation of MMPs results in an imbalance of ECM anabolism and catabolism, leading to the degradation of the ECM and the development of IDD. Therefore, the regulation of MMP expression is a potential therapeutic target for the treatment of IDD. Recent research has focused on identifying the mechanisms by which MMPs cause ECM degradation and promote IDD, as well as on developing therapies that target MMPs. In summary, MMP dysregulation is a crucial factor in the development of IDD, and a deeper understanding of the mechanisms involved is needed to develop effective biological therapies that target MMPs to treat IDD.
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Affiliation(s)
- Xiaosong Zou
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Xingmin Zhang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Song Han
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Lin Wei
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Zhi Zheng
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Yongjie Wang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Jingguo Xin
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Shaokun Zhang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China.
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miR-328-5p Induces Human Intervertebral Disc Degeneration by Targeting WWP2. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3511967. [PMID: 36211818 PMCID: PMC9537005 DOI: 10.1155/2022/3511967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/30/2022] [Accepted: 09/07/2022] [Indexed: 11/18/2022]
Abstract
Intervertebral disc degeneration (IDD) development is regulated by miRNA, including inflammatory reactions, cell apoptosis, and degradation of extracellular matrix. Nucleus pulposus cells apoptosis has a absolute influence in the development of IDD. This experiment explores the mechanism of miR-328-5p regulating IDD. Through the analysis of miRNA and mRNA microarray database, we screened the target genes miR-328-5p and WWP2. We verified the expression of miR-328-5p, WWP2, and related apoptotic genes in normal and degenerative nucleus pulposus tissues by qRT-PCR. The expressions of WWP2, Bcl-2, and Bax were detected by qRT-PCR and western blot after transfection to nucleus pulposus cell. The nucleus pulposus cell proliferation and apoptosis after transfection were confirmed by CCK8 and flow cytometry. Luciferase reporter assay and bioinformatics analyzed the targeting relationship between miR-328-5p and WWP2. Firstly, the qRT-PCR experiments confirmed the significant increase of miR-328-5p expression, while significant reduction of WWP2 in a degenerative tissues compared to the normal tissues. Surprisingly, miR-328-5p expression was positively, while that of WWP2 negatively correlated with the degeneration grade of IDD. And we also identified the high expression of Bax and Caspase3, while low expression of Bcl-2 in a degenerative tissues. After miR-328-5p mimic transfected into nucleus pulposus cell, qRT-PCR and western blot confirmed that WWP2 and Bcl-2 expressions were downregulated, while Bax and Caspase3 expressions were upregulated, and the same results were obtained by knocking down WWP2. CCK8 and flow cytometry confirmed that miR-328-5p inhibited the proliferation and induced apoptosis of nucleus pulposus cells. WWP2 is a target gene of miR-328-5p by bioinformatics and luciferase reporter assay. In summary, miR-328-5p targets WWP2 to regulate nucleus pulposus cells apoptosis and then participates in the development of IDD. Furthermore, this study may provide new references and ideas for IDD treatment.
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Mechanisms and functions of long noncoding RNAs in intervertebral disc degeneration. Pathol Res Pract 2022; 235:153959. [DOI: 10.1016/j.prp.2022.153959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/04/2022] [Accepted: 05/25/2022] [Indexed: 01/17/2023]
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Xin J, Wang Y, Zheng Z, Wang S, Na S, Zhang S. Treatment of Intervertebral Disc Degeneration. Orthop Surg 2022; 14:1271-1280. [PMID: 35486489 PMCID: PMC9251272 DOI: 10.1111/os.13254] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 02/09/2022] [Accepted: 02/18/2022] [Indexed: 12/25/2022] Open
Abstract
Intervertebral disc degeneration (IDD) causes a variety of signs and symptoms, such as low back pain (LBP), intervertebral disc herniation, and spinal stenosis, which contribute to high social and economic costs. IDD results from many factors, including genetic factors, aging, mechanical injury, malnutrition, and so on. The pathological changes of IDD are mainly composed of the senescence and apoptosis of nucleus pulposus cells (NPCs), the progressive degeneration of extracellular matrix (ECM), the fibrosis of annulus fibrosus (AF), and the inflammatory response. At present, IDD can be treated by conservative treatment and surgical treatment based on patients' symptoms. However, all of these can only release the pain but cannot reverse IDD and reconstruct the mechanical function of the spine. The latest research is moving towards the field of biotherapy. Mesenchymal stem cells (MSCs) are regard as the potential therapy of IDD because of their ability to self-renew and differentiate into a variety of tissues. Moreover, the non-coding RNAs (ncRNAs) are found to regulate many vital processes in IDD. There have been many successes in the in vitro and animal studies of using biotherapy to treat IDD, but how to transform the experimental data to real therapy which can apply to humans is still a challenge. This article mainly reviews the treatment strategies and research progress of IDD and indicates that there are many problems that need to be solved if the new biotherapy is to be applied to clinical treatment of IDD. This will provide reference and guidance for clinical treatment and research direction of IDD.
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Affiliation(s)
- Jingguo Xin
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, China.,Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Yongjie Wang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, China.,Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Zhi Zheng
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, China.,Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Shuo Wang
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - Shibo Na
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, China.,Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
| | - Shaokun Zhang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, China.,Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, China
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8
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Yu B, Zhu Z, Shen B, Lu J, Guo K, Zhao W, Wu D. MicroRNA-137 inhibits the inflammatory response and extracellular matrix degradation in lipopolysaccharide-stimulated human nucleus pulposus cells by targeting activin a receptor type I. Bioengineered 2022; 13:6396-6408. [PMID: 35236255 PMCID: PMC8973860 DOI: 10.1080/21655979.2022.2042987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
This study aimed to investigate the role played by microRNA (miR)-137 in intervertebral disc degeneration via targeting activin A receptor type I (ACVR1) and the underlying mechanism. Human nucleus pulposus cells were exposed to 10 ng/mL lipopolysaccharide (LPS) to establish an in vitro intervertebral disc degeneration model. ACVR1, extracellular matrix degradation-associated genes (aggrecan and collagen type II) and miR-137 levels were assessed using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Western blotting assays. The MTT (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide) assay and flow cytometry were used to evaluate nucleus pulposus cell viability and apoptosis. Additionally, the association between miR-137 and ACVR1 was predicted and verified using bioinformatic software and dual-luciferase reporter assays. Furthermore, the secretion of inflammatory factors was analyzed via enzyme linked immunosorbent assay (ELISA). Our results confirmed that ACVR1 was upregulated in lipopolysaccharide-treated nucleus pulposus cells. Lipopolysaccharide suppressed cell viability, promoted apoptosis, enhanced the secretion of inflammatory factors, and reduced aggrecan and collagen type II expression. However, these results were reversed upon ACVR1 silencing. Our data revealed that ACVR1 directly targets miR-137 and is negatively regulated by miR-137 in nucleus pulposus cells. Additionally, the miR-137 mimic promoted cell growth, reduced cell apoptosis, reduced the secretion of inflammatory cytokines, and accelerated extracellular matrix accumulation in lipopolysaccharide-exposed nucleus pulposus cells. However, ACVR1 plasmid abolished the functions of the miR-137 mimic in lipopolysaccharide-exposed nucleus pulposus cells. Together, these findings indicate that miR-137 suppresses the inflammatory response and extracellular matrix degradation in lipopolysaccharide-treated nucleus pulposus cells by targeting ACVR1.
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Affiliation(s)
- Bin Yu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Ziqi Zhu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Beiduo Shen
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jiawei Lu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Kai Guo
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Weidong Zhao
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Desheng Wu
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
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Wang C, Cui L, Gu Q, Guo S, Zhu B, Liu X, Li Y, Liu X, Wang D, Li S. The Mechanism and Function of miRNA in Intervertebral Disc Degeneration. Orthop Surg 2022; 14:463-471. [PMID: 35142050 PMCID: PMC8926997 DOI: 10.1111/os.13204] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 10/13/2021] [Accepted: 12/20/2021] [Indexed: 12/31/2022] Open
Abstract
Intervertebral disc degeneration (IDD) disease has been considered as the main cause of low back pain (LBP), which is a very common symptom and the leading cause of disability worldwide today. The pathological mechanism of IDD remains quite complicated, and genetic, developmental, biochemical, and biomechanical factors all contribute to the development of the disease. There exists no effective, non-surgical treatment for IDD nowadays, which is largely related to the lack of knowledge of the specific mechanisms of IDD, and the lack of effective specific targets. Recently, non-coding RNA, including miRNA, has been recognized as an important regulator of gene expression. Current studies on the effects of miRNA in IDD have confirmed that a variety of miRNAs play a crucial role in the process of IDD via nucleus pulposus cells (NPC) apoptosis, abnormal proliferation, inflammatory factors, the extracellular matrix (ECM) degradation, and annulus fibrosus (AF) degeneration. In the past 10 years, research on miRNA has been quite active in IDD. This review summarizes the current research progression of miRNA in the IDD and puts forward some prospects and challenges on non-surgical treatment for IDD.
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Affiliation(s)
- Chenglong Wang
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Liqiang Cui
- Department of Spine Surgery, Mianyang Orthopaedic Hospital, Mianyang, China
| | - Qinwen Gu
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Sheng Guo
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Bin Zhu
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Xueli Liu
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Yujie Li
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Xinyue Liu
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Dingxuan Wang
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Sen Li
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
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Du L, Li X, Gao Q, Yuan P, Sun Y, Chen Y, Huang B, Deng Y, Wang B. LncRNA nuclear receptor subfamily 2 group F member 1 antisense RNA 1 (NR2F1-AS1) aggravates nucleus pulposus cell apoptosis and extracellular matrix degradation. Bioengineered 2022; 13:2746-2762. [PMID: 35094651 PMCID: PMC8973659 DOI: 10.1080/21655979.2021.2016087] [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] [Indexed: 11/23/2022] Open
Abstract
Emerging reports uncover that long noncoding RNAs (lncRNAs) help regulate intervertebral disc degeneration (IVDD). Here, we probe the function of lncRNA nuclear receptor subfamily 2 group F member 1 antisense RNA 1 (NR2F1-AS1) in IVDD. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was applied to verify the expression of NR2F1-AS1 and miR-145-5p in nucleus pulposus (NP) tissues from IVDD patients or NP cells dealt with IL-1β or TNF-α. Flow cytometry or the TdT-mediated dUTP nick end labeling (TUNEL) assay was performed to validate the apoptosis of NP cells with selective regulation of NR2F1-AS1 and miR-145-5p. ECM-related genes, FOXO1, Bax, and Bcl2 were evaluated by qRT-PCR or Western blot (WB). The targeted relationships between NR2F1-AS1 and miR-145-5p, miR-145-5p and FOXO1 were testified by the dual-luciferase reporter assay and the RNA immunoprecipitation (RIP) assay. Our outcomes substantiated that NR2F1-AS1 was up-regulated, while miR-145-5p was down-regulated in intervertebral disc tissues of IVDD patients or NP cells treated with IL-1β or TNF-α. Besides, overexpressing NR2F1-AS1 intensified ECM degradation and NP cell apoptosis induced by IL-1β, while knocking down NR2F1-AS1 or up-regulating miR-145-5p reversed IL-1β-mediated effects in NP cells. Meanwhile, NR2F1-AS1 choked miR-145-5p and abated its effects in NP cells. This study confirms that NR2F1-AS1 modulates IVDD progression by up-regulating the FOXO1 pathway through the sponge of miR-145-5p as a competitive endogenous RNA (ceRNA).
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Affiliation(s)
- Longlong Du
- Pain Area of Orthopedics of Traditional Chinese Medicine, Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Xuefeng Li
- Department of Traditional Chinese and Western Medicine, Shaanxi University of Traditional Chinese Medicine, Xianyang, Shaanxi, China
| | - Qimeng Gao
- Department of Traditional Chinese and Western Medicine, Shaanxi University of Traditional Chinese Medicine, Xianyang, Shaanxi, China
| | - Puwei Yuan
- Department of Traditional Chinese and Western Medicine, Shaanxi University of Traditional Chinese Medicine, Xianyang, Shaanxi, China
| | - Yindi Sun
- Pain Area of Orthopedics of Traditional Chinese Medicine, Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yingpu Chen
- Pain Area of Orthopedics of Traditional Chinese Medicine, Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Bo Huang
- Department of Orthopaedic, Affiliated Hospital of Jiujiang University, Jiujiang, Jiangxi, China
| | - Yu Deng
- Department of Orthopaedic Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Baohui Wang
- Pain Area of Orthopedics of Traditional Chinese Medicine, Honghui Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Yang F, Wang J, Chen Z, Yang Y, Zhang W, Guo S, Yang Q. Role of microRNAs in intervertebral disc degeneration (Review). Exp Ther Med 2021; 22:860. [PMID: 34178133 PMCID: PMC8220656 DOI: 10.3892/etm.2021.10292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 05/19/2021] [Indexed: 11/14/2022] Open
Abstract
The incidence of lower back pain caused by intervertebral disc degeneration (IDD) is gradually increasing. IDD not only affects the quality of life of the patients, but also poses a major socioeconomic burden. There is currently no optimal method for delaying or reversing IDD, mainly due to its unknown pathogenesis. MicroRNAs (miRNAs/miRs) participate in the development of a number of diseases, including IDD. Abnormal expression of miRNAs in the intervertebral disc is implicated in various pathological processes underlying the development of IDD, including nucleus pulposus (NP) cell (NPC) proliferation, NPC apoptosis, extracellular matrix remodeling, inflammation and cartilaginous endplate changes, among others. The focus of the present review was the advances in research on the involvement of miRNAs in the mechanism underlying IDD. Further research is expected to identify markers for early diagnosis of IDD and new targets for delaying or reversing IDD.
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Affiliation(s)
- Fengguang Yang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Jizu Wang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Zhixin Chen
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Yuping Yang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Wenhui Zhang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Shifang Guo
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Qingshan Yang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
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Sun Q, Nan XY, Tian FM, Liu F, Ping SH, Zhou Z, Zhang L. Raloxifene retards the progression of adjacent segmental intervertebral disc degeneration by inhibiting apoptosis of nucleus pulposus in ovariectomized rats. J Orthop Surg Res 2021; 16:368. [PMID: 34107971 PMCID: PMC8188785 DOI: 10.1186/s13018-021-02504-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 05/23/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Adjacent segmental intervertebral disk degeneration (ASDD) is a major complication secondary to lumbar fusion. Although ASSD pathogenesis remains unclear, the primary cause of intervertebral disk degeneration (IVDD) development is apoptosis of nucleus pulposus (NP). Raloxifene (RAL) could delay ASDD by inhibiting NP apoptosis. METHODS An ASDD rat model was established by ovariectomy (OVX) and posterolateral spinal fusion (PLF) on levels 4-5 of the lumbar vertebrae. Rats in the treatment groups were administered 1 mg/kg/d RAL by gavage for 12 weeks, following which, all animals were euthanized. Lumbar fusion, apoptosis, ASDD, and vertebrae micro-architecture were evaluated. RESULTS RAL maintained intervertebral disk height (DHI), delayed vertebral osteoporosis, reduced histological score, and inhibited apoptosis. The OVX+PLF+RAL group revealed upregulated expression of aggrecan and B-cell lymphoma-2 (bcl2), as well as significantly downregulated expression of a disintegrin and metalloproteinase with thrombospondin motifs 4 (ADAMTS-4), metalloproteinase-13 (MMP-13), caspase-3, BCL2-associated X (bax), and transferase dUTP nick end labeling (TUNEL) staining. Micro-computed tomography (Micro-CT) analysis revealed higher bone volume fraction (BV/TV), bone mineral density (BMD), and trabecular number (Tb.N), and lower trabecular separation (Tb.Sp) in OVX+PLF+RAL group than in the OVX+PLF group. CONCLUSIONS RAL can postpone ASDD development in OVX rats through inhibiting extracellular matrix metabolic imbalance, NP cell apoptosis, and vertebral osteoporosis. These findings showed RAL as a potential therapeutic target for ASDD.
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Affiliation(s)
- Qi Sun
- Department of Orthopedic Surgery, Hebei Medical University, 361 Zhongshan E Rd, Shijiazhuang, Hebei, 050000, People's Republic of China
| | - Xin-Yu Nan
- Department of Orthopedic Surgery, Hebei Medical University, 361 Zhongshan E Rd, Shijiazhuang, Hebei, 050000, People's Republic of China
| | - Fa-Ming Tian
- Medical Research Center, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Fang Liu
- Medical Research Center, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Shao-Hua Ping
- Department of Orthopedic Surgery, Hebei Medical University, 361 Zhongshan E Rd, Shijiazhuang, Hebei, 050000, People's Republic of China
| | - Zhuang Zhou
- Department of Bone and Soft Tissue Oncology, The Third Hospital of Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Liu Zhang
- Department of Orthopedic Surgery, Hebei Medical University, 361 Zhongshan E Rd, Shijiazhuang, Hebei, 050000, People's Republic of China.
- Department of Orthopedic Surgery, Emergency General Hospital, Beijing, People's Republic of China.
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Iaquinta MR, Lanzillotti C, Mazziotta C, Bononi I, Frontini F, Mazzoni E, Oton-Gonzalez L, Rotondo JC, Torreggiani E, Tognon M, Martini F. The role of microRNAs in the osteogenic and chondrogenic differentiation of mesenchymal stem cells and bone pathologies. Theranostics 2021; 11:6573-6591. [PMID: 33995677 PMCID: PMC8120225 DOI: 10.7150/thno.55664] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 03/15/2021] [Indexed: 02/07/2023] Open
Abstract
Mesenchymal stem cells (MSCs) have been identified in many adult tissues. MSCs can regenerate through cell division or differentiate into adipocytes, osteoblasts and chondrocytes. As a result, MSCs have become an important source of cells in tissue engineering and regenerative medicine for bone tissue and cartilage. Several epigenetic factors are believed to play a role in MSCs differentiation. Among these, microRNA (miRNA) regulation is involved in the fine modulation of gene expression during osteogenic/chondrogenic differentiation. It has been reported that miRNAs are involved in bone homeostasis by modulating osteoblast gene expression. In addition, countless evidence has demonstrated that miRNAs dysregulation is involved in the development of osteoporosis and bone fractures. The deregulation of miRNAs expression has also been associated with several malignancies including bone cancer. In this context, bone-associated circulating miRNAs may be useful biomarkers for determining the predisposition, onset and development of osteoporosis, as well as in clinical applications to improve the diagnosis, follow-up and treatment of cancer and metastases. Overall, this review will provide an overview of how miRNAs activities participate in osteogenic/chondrogenic differentiation, while addressing the role of miRNA regulatory effects on target genes. Finally, the role of miRNAs in pathologies and therapies will be presented.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Fernanda Martini
- Department of Medical Sciences, Section of Experimental Medicine, School of Medicine, University of Ferrara. Ferrara, Italy
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Han Z, Wang Q, Wu X, Wang J, Gao L, Guo R, Wu J. Comprehensive RNA expression profile of therapeutic adipose‑derived mesenchymal stem cells co‑cultured with degenerative nucleus pulposus cells. Mol Med Rep 2021; 23:185. [PMID: 33398382 PMCID: PMC7809910 DOI: 10.3892/mmr.2021.11824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 11/09/2020] [Indexed: 12/25/2022] Open
Abstract
Stem cell-based therapy is a promising alternative to conventional approaches to treating intervertebral disc degeneration (IDD). However, comprehensive understanding of stem cell-based therapy at the gene level is still lacking. In the present study, we identified the expression profiles of messenger RNAs (mRNAs) and long non-coding RNAs (lncRNAs) expressed within a co-culture system of adipose-derived mesenchymal stem cells (ASCs) and degenerative nucleus pulposus cells (NPCs) and explored the signaling pathways involved and their regulatory networks. Microarray analysis was used to compare ASCs co-cultured with degenerative NPCs to ASCs cultured alone, and the underlying regulatory pattern, including the signaling pathways and competing endogenous RNA (ceRNA) network, was analyzed with robust bioinformatics methods. The results showed that 360 lncRNAs and 1757 mRNAs were differentially expressed by ASCs, and the microarray results were confirmed by quantitative PCR. Moreover, 589 Gene Ontology terms were upregulated, whereas 661 terms were downregulated. A total of 299 signaling pathways were significantly altered. A Path-net and a Signal-net were built to show interactions among differentially expressed genes. An mRNA-lncRNA co-expression network was constructed to reveal the interplay among differentially expressed mRNAs and lncRNAs, whereas a ceRNA network was built to investigate their connections with microRNAs involved in IDD. To the best of our knowledge, this original and comprehensive exploration reveals differentially expressed lncRNAs and mRNAs of ASCs stimulated by degenerative NPCs, underscoring the regulation pattern within the co-culture system at the gene level. These data may further understanding of NPC-directed differentiation of ASCs and facilitate the application of ASCs in future treatments for IDD.
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Affiliation(s)
- Zhihua Han
- Trauma Centre, Department of Trauma and Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 201620, P.R. China
| | - Qiugen Wang
- Trauma Centre, Department of Trauma and Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 201620, P.R. China
| | - Xiaoming Wu
- Trauma Centre, Department of Trauma and Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 201620, P.R. China
| | - Jiandong Wang
- Trauma Centre, Department of Trauma and Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 201620, P.R. China
| | - Liang Gao
- Sino Euro Orthopaedics Network, Hamburg D-66421, Germany
| | - Ruipeng Guo
- Sino Euro Orthopaedics Network, Hamburg D-66421, Germany
| | - Jianhong Wu
- Trauma Centre, Department of Trauma and Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 201620, P.R. China
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Guo HY, Guo MK, Wan ZY, Song F, Wang HQ. Emerging evidence on noncoding-RNA regulatory machinery in intervertebral disc degeneration: a narrative review. Arthritis Res Ther 2020; 22:270. [PMID: 33198793 PMCID: PMC7667735 DOI: 10.1186/s13075-020-02353-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 10/12/2020] [Indexed: 12/12/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is the most common cause of low-back pain. Accumulating evidence indicates that the expression profiling of noncoding RNAs (ncRNAs), including microRNAs (miRNAs), circular RNAs (circRNAs), and long noncoding RNAs (lncRNAs), are different between intervertebral disc tissues obtained from healthy individuals and patients with IDD. However, the roles of ncRNAs in IDD are still unclear until now. In this review, we summarize the studies concerning ncRNA interactions and regulatory functions in IDD. Apoptosis, aberrant proliferation, extracellular matrix degradation, and inflammatory abnormality are tetrad fundamental pathologic phenotypes in IDD. We demonstrated that ncRNAs are playing vital roles in apoptosis, proliferation, ECM degeneration, and inflammation process of IDD. The ncRNAs participate in underlying mechanisms of IDD in different ways. MiRNAs downregulate target genes’ expression by directly binding to the 3′-untranslated region of mRNAs. CircRNAs and lncRNAs act as sponges or competing endogenous RNAs by competitively binding to miRNAs and regulating the expression of mRNAs. The lncRNAs, circRNAs, miRNAs, and mRNAs widely crosstalk and form complex regulatory networks in the degenerative processes. The current review presents novel insights into the pathogenesis of IDD and potentially sheds light on the therapeutics in the future.
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Affiliation(s)
- Hao-Yu Guo
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
| | - Ming-Ke Guo
- Department of Orthopaedic Surgery, The Affiliated Hospital of PLA Army Medical University Warrant Officer School, Shijiazhuang, 050000, People's Republic of China
| | - Zhong-Yuan Wan
- Department of Orthopedics, The Seventh Medical Center of Chinese PLA General Hospital, Beijing, 100700, People's Republic of China
| | - Fang Song
- Department of Stomatology, PLA Rocket Force Characteristic Medical Center, Beijing, 100088, People's Republic of China
| | - Hai-Qiang Wang
- Institute of Integrative Medicine, Shaanxi University of Chinese Medicine, Xixian Avenue, Xixian District, Shaanxi Province, 712046, People's Republic of China.
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16
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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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17
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Wang XQ, Tu WZ, Guo JB, Song G, Zhang J, Chen CC, Chen PJ. A Bioinformatic Analysis of MicroRNAs' Role in Human Intervertebral Disc Degeneration. PAIN MEDICINE 2020; 20:2459-2471. [PMID: 30953590 DOI: 10.1093/pm/pnz015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Objectives The aim of our study was to ascertain the underlying role of microRNAs (miRNAs) in human intervertebral disc degeneration (IDD). Design Bioinformatic analysis from multiple databases. Methods Studies of the association of miRNAs and IDD were identified in multiple electronic databases. All potential studies were assessed by the same inclusion and exclusion criteria. We recorded whether miRNA expression was commonly increased or suppressed in the intervertebral disc tissues and cells of IDD subjects. We used String to identify biological process and cellular component pathways of differentially expressed genes. Results We included fifty-seven articles from 1,277 records in this study. This report identified 40 different dysregulated miRNAs in 53 studies, including studies examining cell apoptosis (26 studies, 49.06%), cell proliferation (15 studies, 28.3%), extracellular matrix (ECM) degradation (10 studies, 18.86%), and inflammation (five studies, 9.43%) in IDD patients. Three upregulated miRNAs (miR-19b, miR-32, miR-130b) and three downregulated miRNAs (miR-31, miR-124a, miR-127-5p) were considered common miRNAs in IDD tissues. The top three biological process pathways for upregulated miRNAs were positive regulation of biological process, nervous system development, and negative regulation of biological process, and the top three biological process pathways for downregulated miRNAs were negative regulation of gene expression, intracellular signal transduction, and negative regulation of biological process. Conclusions This study revealed that miRNAs could be novel targets for preventing IDD and treating patients with IDD by regulating their target genes. These results provide valuable information for medical professionals, IDD patients, and health care policy makers.
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Affiliation(s)
- Xue-Qiang Wang
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Equal contribution
| | - Wen-Zhan Tu
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Equal contribution
| | - Jia-Bao Guo
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ge Song
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Juan Zhang
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chang-Cheng Chen
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Pei-Jie Chen
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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18
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Chen S, Luo Z, Chen X. Andrographolide mitigates cartilage damage via miR-27-3p-modulated matrix metalloproteinase13 repression. J Gene Med 2020; 22:e3187. [PMID: 32196852 DOI: 10.1002/jgm.3187] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/09/2020] [Accepted: 03/12/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND As a potential anti-arthritic agent, Andrographolide (And) is capable of promoting chondrocyte proliferation and preventing apoptosis in pathologic condition. The present study aimed to explore the roles of And in in vivo and in vitro models of osteoarthritis (OA), as well as its underlying molecular mechanisms. METHODS An OA mouse model was established using anterior cruciate ligament transection operation on the left knee joint. The pathological changes of articular cartilage were assessed using safranin O staining. Chondrocyte proliferation and apoptosis were measured using cell a counting kit-8 assay and flow cytometry. Bioinformatics algorithms and a luciferase reporter assay were used to evaluate matrix metalloproteinase13 (MMP13) as a direct target of miR-27-3p. RESULTS And had the ability to prevent catabolism and facilitate anabolism of articular cartilage in an experimental OA model in mice. In addition, And alleviated chondrocyte apoptosis in in vitro and in vivo models of OA. We also found that both up-regulation of MMP13 and down-regulation of miR-27-3p in the proximal tibia of OA mice and interleukin (IL)-1β-stimulated chondrocytes were reversed by And administration simultaneously. MMP13 was validated as direct target of miR-27-3p and could be suppressed by overexpression of miR-27-3p in mouse chondrocyte. Furthermore, overexpression of miR-27-3p or MMP13 loss-of-function in chondrocytes could alleviate IL-1β-induced apoptosis. CONCLUSIONS These results indicated that miR-27-3p/MMP13 signaling axis might be a potential therapeutic target of And for preventing the progression of OA.
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Affiliation(s)
- Shaojian Chen
- Department of Sports Medical, Ganzhou People's Hospital & the Affiliated Ganzhou Hospital of Nanchang University, Jiangxi Province, China
| | - Zhihuan Luo
- Department of Sports Medical, Ganzhou People's Hospital & the Affiliated Ganzhou Hospital of Nanchang University, Jiangxi Province, China
| | - Xiaguang Chen
- Department of Sports Medical, Ganzhou People's Hospital & the Affiliated Ganzhou Hospital of Nanchang University, Jiangxi Province, China
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19
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Zhu G, Yang X, Peng C, Yu L, Hao Y. Exosomal miR-532-5p from bone marrow mesenchymal stem cells reduce intervertebral disc degeneration by targeting RASSF5. Exp Cell Res 2020; 393:112109. [PMID: 32464126 DOI: 10.1016/j.yexcr.2020.112109] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 05/13/2020] [Accepted: 05/21/2020] [Indexed: 11/29/2022]
Abstract
The transplantation of bone marrow mesenchymal stem cells (BMSCs) has been found to be used as an effective therapy of intervertebral disc degeneration (IDD). However, the underlying mechanisms of BMSCs in the progress of IDD are not fully explained. In this study, we found that exosomes derived from BMSCs (BMSCs-Exos) inhibited the apoptotic rate, extracellular matrix (ECM) degradation, and fibrosis deposition in TNF-α-induced nucleus pulposus cells (NPCs). Importantly, the level of miR-532-5p was observed to be decreased in apoptotic NPCs, but abundant in BMSCs-Exos with TNF-α treatment. The results showed that BMSCs-Exos under TNF-α stimuli exerted better effects on NPCs than BMSCs-Exos, which might be mitigated by the inhibition of miR-532-5p in BMSCs-Exos. The gain-of-function results suggested that the direct overexpression of miR-532-5p in NPCs could inhibit TNF-α-induced increase of apoptotic process, activation of apoptotic proteins, imbalance of anabolism/catabolism levels, and accumulation of collagen I. In addition, RASSF5 was demonstrated to be a target of miR-532-5p. Knockdown of RASSF5 could decrease the apoptotic cells and reduce the activated apoptotic protein levels in TNF-α-induced NPCs. Overall, these data indicate that exosomes from BMSCs may suppress TNF-α-induced apoptosis, ECM degradation, and fibrosis deposition in NPCs through the delivery of miR-532-5p via targeting RASSF5. This work provides a promising therapeutic strategy for the progress of IDD.
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Affiliation(s)
- Guangduo Zhu
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China
| | - Xiaowei Yang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China
| | - Cheng Peng
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China
| | - Lei Yu
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China
| | - Yingjie Hao
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China.
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Cazzanelli P, Wuertz-Kozak K. MicroRNAs in Intervertebral Disc Degeneration, Apoptosis, Inflammation, and Mechanobiology. Int J Mol Sci 2020; 21:ijms21103601. [PMID: 32443722 PMCID: PMC7279351 DOI: 10.3390/ijms21103601] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/16/2020] [Accepted: 05/18/2020] [Indexed: 12/12/2022] Open
Abstract
Intervertebral disc (IVD) degeneration is a multifactorial pathological process associated with low back pain, the leading cause of years lived in disability worldwide. Key characteristics of the pathological changes connected with degenerative disc disease (DDD) are the degradation of the extracellular matrix (ECM), apoptosis and senescence, as well as inflammation. The impact of nonphysiological mechanical stresses on IVD degeneration and inflammation, the mechanisms of mechanotransduction, and the role of mechanosensitive miRNAs are of increasing interest. As post-transcriptional regulators, miRNAs are known to affect the expression of 30% of proteincoding genes and numerous intracellular processes. The dysregulation of miRNAs is therefore associated with various pathologies, including degenerative diseases such as DDD. This review aims to give an overview of the current status of miRNA research in degenerative disc pathology, with a special focus on the involvement of miRNAs in ECM degradation, apoptosis, and inflammation, as well as mechanobiology.
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Affiliation(s)
- Petra Cazzanelli
- Department of Biomedical Engineering, Rochester Institute of Technology (RIT), Rochester, NY 14623, USA;
| | - Karin Wuertz-Kozak
- Department of Biomedical Engineering, Rochester Institute of Technology (RIT), Rochester, NY 14623, USA;
- Schön Clinic Munich Harlaching, Spine Center, Academic Teaching Hospital and Spine Research Institute of the Paracelsus Medical University Salzburg (Austria), 81547 Munich, Germany
- Correspondence: ; Tel.: +1-585-475-7355
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21
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Zheng H, Wang T, Li X, He W, Gong Z, Lou Z, Wang B, Li X. LncRNA MALAT1 exhibits positive effects on nucleus pulposus cell biology in vivo and in vitro by sponging miR-503. BMC Mol Cell Biol 2020; 21:23. [PMID: 32228440 PMCID: PMC7106590 DOI: 10.1186/s12860-020-00265-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 03/18/2020] [Indexed: 12/17/2022] Open
Abstract
Background Intervertebral disc degeneration (IDD) is characterized by the loss of nucleus pulposus cells (NPCs) and phenotypic abnormalities. Accumulating evidence suggests that long noncoding RNAs (lncRNAs) are involved in the pathogenesis of IDD. In this study, we aimed to investigate the functional effects of lncRNA MALAT1 on NPCs in IDD and the possible mechanism governing these effects. Results We validated the decreased expression of MALAT1 in the IDD tissues, which was associated with decreased Collagen II and Aggrecan expression. In vitro, overexpressed MALAT1 could attenuate the effect of IL-1β on NPC proliferation, apoptosis, and Aggrecan degradation. In vivo, MALAT1 overexpression attenuated the severity of disc degeneration in IDD model rats. Our molecular study further demonstrated that MALAT1 could sponge miR-503, modulate the expression of miR-503, and activate downstream MAPK signaling pathways. The effects of MALAT1 on NPCs were partially reversed/aggregated by miR-503 mimics/inhibitor treatment. Conclusion Our data suggested that the MALAT1-miR-503-MAPK pathway plays a critical role in NPCs, which may be a potential strategy for alleviating IDD.
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Affiliation(s)
- Hongyu Zheng
- Department of Emergency Medical, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Tingting Wang
- Department of Geriatrics, Yan' An Hospital of Kunming City, Kunming, China
| | - Xiangmin Li
- Department of Panicaceae, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wei He
- Department of Orthopedics, Qianjiang Central Hospital, Qianjiang, China
| | - Zhiqiang Gong
- Department of Orthopedics, First Affiliated Hospital of Kunming Medical University, No. 295 Xichang Road, Kunming, Yunnan, China
| | - Zhenkai Lou
- Department of Orthopedics, First Affiliated Hospital of Kunming Medical University, No. 295 Xichang Road, Kunming, Yunnan, China
| | - Bing Wang
- Department of Orthopedics, First Affiliated Hospital of Kunming Medical University, No. 295 Xichang Road, Kunming, Yunnan, China
| | - Xingguo Li
- Department of Orthopedics, First Affiliated Hospital of Kunming Medical University, No. 295 Xichang Road, Kunming, Yunnan, China.
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22
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Fan Z, Zhao W, Fan S, Li C, Qiao J, Xu Y. Identification of Potential Biomarkers for Intervertebral Disc Degeneration Using the Genome-Wide Expression Analysis. J Comput Biol 2020; 27:1341-1349. [PMID: 31904996 DOI: 10.1089/cmb.2019.0103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Intervertebral disc degeneration (IDD) is the major cause of low back pain. The current study was aimed to further elucidate the mechanisms underlying it. Microarray data sets GSE70362 containing Thompson degeneration grades I-V were divided into the control and the degenerative group and were analyzed. Differentially expressed genes (DEGs) were screened and clustered, followed by functional enrichment analysis. Then the protein-protein interaction (PPI) network and the microRNA (miRNA) regulatory network were constructed and integratedly analyzed. Finally, modules from the integrated network were mined, and gene ontology and pathway enrichment analysis were performed. DEGs in three clusters had the overall expression trend with the Thompson grades. The upregulated DEGs were associated with protein transport and localization, while the downregulated DEGs were enriched in membrane lipid metabolic process and endocytosis. After the integrated analysis of PPI and miRNA-target interactions, some hub genes such as HSP90B1, RPS4Y1, RPL15, and UTY, as well as hub miRNAs, including miR-124a and miR-506, were screened. Finally, modules in the integrated network were functionally associated with protein targeting, peptide processing, and metabolic process, as well as protein folding. Taken together, our data showed that the protein synthesis, targeting, and localization can be greatly changed to contribute to the progress of IDD. Besides, the related genes such as RPS4Y1 and HSP90B1 would be used as diagnostic and therapeutic targets for IDD.
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Affiliation(s)
- Zongjiang Fan
- Department of Gastroenterology, 920th Hospital of Joint Logistics Support Force, Kunming, China
| | - Wanqiu Zhao
- Department of Orthopaedics, and 920th Hospital of Joint Logistics Support Force, Kunming, China
| | - Shengning Fan
- Department of Orthopaedics, and 920th Hospital of Joint Logistics Support Force, Kunming, China
| | - Chunxiao Li
- Department of Orthopaedics, and 920th Hospital of Joint Logistics Support Force, Kunming, China
| | - Jing Qiao
- Department of Information, 920th Hospital of Joint Logistics Support Force, Kunming, China
| | - Yongqing Xu
- Department of Orthopaedics, and 920th Hospital of Joint Logistics Support Force, Kunming, China
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Zhou X, Hong Y, Zhan Y. Karacoline, identified by network pharmacology, reduces degradation of the extracellular matrix in intervertebral disc degeneration via the NF-κB signaling pathway. J Pharm Anal 2019; 10:13-22. [PMID: 32123596 PMCID: PMC7037626 DOI: 10.1016/j.jpha.2019.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 07/17/2019] [Accepted: 07/19/2019] [Indexed: 01/17/2023] Open
Abstract
Karacoline is a compound found in the plant Aconitum kusnezoffii Reichb. Although Aconitum kusnezoffii Reichb is widely used for the treatment of pain, very few studies have been carried out on the use of karacoline due to its potential toxicity. In this study, we selected key matrix metalloproteinases (MMPs), collagen II, and aggrecan as targets due to their association with intervertebral disc degeneration (IDD). Using these targets, we then used network pharmacology to predict a series of molecules that might exert therapeutic effects on IDD. Of these molecules, karacoline was predicted to have the best effect. Tumor necrosis factor (TNF)-α is known to promote the degeneration of the extracellular matrix in IDD. We therefore applied different concentrations of karacoline (0, 1.25, or 12.88 μM) along with 100 ng/mL TNF-α to rat nucleus pulposus cells and found that karacoline reduced the expression of MMP-14 in IDD by inhibiting the nuclear factor (NF)-κB pathway, while collagen II and aggrecan expression was increased. This suggested that extracellular matrix degradation was inhibited by karacoline (P < 0.05). Our data therefore reveal a new clinical application of karacoline and provide support for the use of network pharmacology in predicting novel drugs. The first study to demonstrate that karacoline can delay IDD by inhibiting extracellular matrix degradation. The study explores the possibility of using network pharmacology to predict new therapeutic drugs for some diseases. This study can lay the basic of using network pharmacology to construct a Chinese herbal compound for targeted therapy.
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Affiliation(s)
- Xiaoli Zhou
- Department of Traditional Chinese Medicine, College of Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yingying Hong
- Department of Biology, School of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306, China
| | - Yulin Zhan
- Orthopedics Department, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine&Health Science, Shanghai, 201306, China
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Wang J, Liu X, Sun B, Du W, Zheng Y, Sun Y. Upregulated miR-154 promotes ECM degradation in intervertebral disc degeneration. J Cell Biochem 2019; 120:11900-11907. [PMID: 30825225 DOI: 10.1002/jcb.28471] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 11/21/2018] [Accepted: 02/07/2019] [Indexed: 01/24/2023]
Abstract
Intervertebral disc degeneration (IDD), a common global health issue, is a major cause for low back pain (LBP). Given the complex etiology of IDD, micro RNA (miRNA) recently has been demonstrated to play essential roles in the progression of IDD. Therefore, this study aims to investigate functions of the miR-154, which is well-documented in a series of cell activities, IDD, and other relevant mechanisms. Lumbar nucleus pulposus (NP) samples were collected from patients with IDD and the control group. After solexa sequencing and bioinformatical analysis, the results showed that miR-154 was increased in NP cells of patients with IDD. Inhibition of miR-154 increased type II collagen and aggrecan and decreased mRNA expressions of collagenase-3 (MMP13) and aggrecanase-1 (ADAMTS4), whereas overexpression of miR-154 reversed such effects in NP cells. In addition, the luciferase reporter assay revealed that fibroblast growth factor 14 (FGF14) is a direct target of miR-154 and that the overexpression of FGF14 leads to similar effects as inhibition of miR-154 did. In conclusion, the results suggested that miR-154 participates in the development of IDD and its effects are mediated via targeting FGF14. Thus, miR-154 may be thought as a potential etiological factor for IDD and may provide insights into a therapeutic target to treat IDD.
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Affiliation(s)
- Jingjie Wang
- Department of Orthopedic Surgery, Qilu Hospital, Shandong University, Jinan, China.,Department of Spine, Yantaishan Hospital, Yantai, China
| | - Xiaoyan Liu
- Department of Laboratory, Yuhuangding Hospital, Yantai, China
| | - Bing Sun
- Department of Spine, Yantaishan Hospital, Yantai, China
| | - Wei Du
- Department of Spine, Yantaishan Hospital, Yantai, China
| | - Yanping Zheng
- Department of Orthopedic Surgery, Qilu Hospital, Shandong University, Jinan, China
| | - Yuanliang Sun
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, Qingdao, China
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Elevated expression of hypoxia-inducible factor-2alpha regulated catabolic factors during intervertebral disc degeneration. Life Sci 2019; 232:116565. [PMID: 31251999 DOI: 10.1016/j.lfs.2019.116565] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/11/2019] [Accepted: 06/11/2019] [Indexed: 02/06/2023]
Abstract
HEADINGS AIMS The present study determined whether nucleus pulposus (NP) cells express hypoxia-inducible factor-2alpha (HIF-2α) and assessed its role in regulating the expression of catabolic factors during intervertebral disc degeneration. MATERIALS AND METHODS Human degenerated NP tissues were acquired to examine the HIF-2α expression levels using immunohistochemistry, western blotting, and Real-time PCR. Human NP cells were cultivated under normoxic or hypoxic conditions, and the HIF-2α expression was determined. Then, human NP cells were treated with HIF-2α plasmids, HIF-2α siRNA, and tumor necrosis factor-alpha (TNF-α) to evaluate the role of HIF-2α in regulating matrix metalloproteinase (MMP) and aggrecanase expression. An in vivo rabbit disc degeneration model was established to demonstrate that HIF-2α plays a critical role in disc degeneration. KEY FINDINGS We found that HIF-2α had a markedly elevated expression in human degenerated discs in the Grade III stage. HIF-2α protein and gene transcript levels in vitro were relatively higher under hypoxic conditions. The expression of MMP-13, ADAMTS-4 was decreased significantly in HIF-2α silencing condition, while the over-expression resulted in significantly increased levels of MMP-13 and ADAMTS-4. When cytokine TNF-α was added, HIF-2α was induced by nuclear factor-κB (NF-κB). The in vivo experiments showed that the HIF-2α controlled the catabolic factors MMP-13 and ADAMTS-4 that regulated the collagen II and aggrecan metabolism in disc degeneration. SIGNIFICANCE HIF-2α is a catabolic regulator in disc degeneration and directly controls the catabolic genes. The suppression of HIF-2α expression leads to decelerates extracellular matrix degradation that might represent a therapeutic target for the degenerative disc.
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MicroRNA Expression Profiles, Target Genes, and Pathways in Intervertebral Disk Degeneration: A Meta-Analysis of 3 Microarray Studies. World Neurosurg 2019; 126:389-397. [PMID: 30904808 DOI: 10.1016/j.wneu.2019.03.120] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Determining the expression profile and target genes of microRNA (miRNA) would assist in determining the pathophysiologic pathways in intervertebral disk degeneration (IDD). The aim of this study was to determine the expression profile of miRNA in degenerated intervertebral disks compared with normal healthy intervertebral disks. METHODS We conducted a meta-analysis of 3 available miRNA expression datasets to identify a panel of co-deregulated miRNA genes and overlapping biological processes in IDD. Degenerated intervertebral disks were compared with normal healthy disks. We selected 35 miRNA features common to all 3 platforms. Then, we calculated differential expression P values from our unpaired data using metaMA package in R statistical software according to the moderated t test method (Limma). Based on the P values (where the threshold was <0.05), a list of differentially expressed miRNAs was identified. RESULTS After normalization and selection of common miRNA features across all 3 platforms, we found a total of 5 differentially expressed miRNAs, among which miR-574-3p, miR-199a-5p, and miR-483-5p were not identified in any individual studies. Our results revealed that miR-199a-5p, miR-574-3p, miR-551a, and miR-640 are commonly upregulated in IDDs compared with control disks, whereas miR-483 is commonly downregulated. Pathway analysis of identified dysregulated miRNAs indicated the involvement of extracellular matrix-receptor interaction, adherens junction, and transforming growth factor-beta signaling pathway in the pathogenesis of IDDs. Moreover, the network of predicted targets for these miRNAs identified most affected target genes as ERBB4 and CLTC. CONCLUSIONS We found that the identified miRNAs through meta-analysis are candidate predictive markers for IDDs through different pathways.
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Alpha 2-Macroglobulin as Dual Regulator for Both Anabolism and Catabolism in the Cartilaginous Endplate of Intervertebral Disc. Spine (Phila Pa 1976) 2019; 44:E338-E347. [PMID: 30138255 DOI: 10.1097/brs.0000000000002852] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Basic science study. OBJECTIVE To illustrate supplemental alpha-2 macroglobulin (α2 M) has beneficial effects on cartilaginous endplates (CEPs) that may slow the progression of intervertebral disc (IVD) degeneration. SUMMARY OF BACKGROUND DATA CEPs play a vital role in progression of intervertebral disc degenerative diseases. However, the ideal and economic therapies for CEPs degeneration are still urgently required. METHODS Firstly, we confirmed degenerative CEP characters by H&E and Safranin O fast green staining and detected increasing level of α2 M and matrix metalloproteinase 13(MMP-13) in degenerative CEP by immunohistochemistry. Then, effects of exogenous α2 M on tumor necrosis factor alpha (TNF-α)-induced CEP catabolic enzyme and anabolic molecules were evaluated by qRT-PCR, Western blotting and ELISA in cultured CEP cells obtained from rats. Furthermore, suppression of α2 M on TNF-α-induced activation of NF-кB signaling pathway was measured by Western blotting and immunofluorescence. In addition, function of α2 M on TNF-α-treated ex vivo IVDs from rats lumbar IVDs was estimated by measuring the expression of MMP-13, Sox9, aggrecan, and type II collagen in CEP area. RESULTS Compared with normal CEP, level of α2 M was slightly increased in CEP from degenerative patients, whereas MMP-13 was sharply elevated. In vitro, α2 M inhibited expression and activity of MMP-3 or MMP-13 in a dose-dependent manner in rat CEP cells stimulated by TNF-α. The α2 M refrained phosphorylation of IκBα and inhibited nuclear translocation of p65. Finally, supplemental α2 M reduced expression of MMP-13, and promoted expression of Sox9, aggrecan, and type II collagen in CEP area of ex vivo IVDs cultured with TNF-α. CONCLUSION α2 M is not sufficiently produced to inactivate higher concentrations of catabolic factor MMP-13 found in the degenerated CEP. Supplemental α2 M protects against the progression of IVD degeneration by inhibiting effects of proinflammatory cytokines. LEVEL OF EVIDENCE N/A.
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Zhang Z, Wang C, Lin J, Jin H, Wang K, Yan Y, Wang J, Wu C, Nisar M, Tian N, Wang X, Zhang X. Therapeutic Potential of Naringin for Intervertebral Disc Degeneration: Involvement of Autophagy Against Oxidative Stress-Induced Apoptosis in Nucleus Pulposus Cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2018; 46:1-20. [PMID: 30284462 DOI: 10.1142/s0192415x18500805] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Intervertebral disc degeneration (IDD) is a major cause of lower back pain, but few efficacious medicines have been developed for IDD. Increased nucleus pulposus cells apoptosis is a dominant pathogenesis of IDD and is considered a therapeutic target. Previously, our group proved that autophagy may protect nucleus pulposus cells against apoptosis. As one of the major bioflavonoids of citrus, naringin activates autophagy. Therefore, we hypothesize that naringin may have therapeutic potential for IDD by activating autophagy in nucleus pulposus cells. In this study, we evaluated the effects of naringin on TBHP-induced oxidative stress in nucleus pulposus cells in vitro as well as in puncture-induced rat IDD model in vivo. Our results showed that naringin could reduce the incidence of oxidative stress-induced apoptosis in nucleus pulposus cells and promoted the expression of autophagy markers LC3-II/I and beclin-1. Meanwhile, inhibition of autophagy by 3-MA may partially reverse the anti-apoptotic effect of naringin, indicating that autophagy was involved in the protective effect of naringin in nucleus pulposus cells. Further study showed that autophagy regulation of naringin may be related to AMPK signaling. Also, we found that naringin treatment can regulate the expression of collagen II, aggrecan and Mmp13 to sustain the extracellular matrix. Furthermore, our in vivo study showed that naringin can ameliorate IDD in puncture-induced rat model. In conclusion, our study suggests that naringin can protect nucleus pulposus cells against apoptosis and ameliorate IDD in vivo, the mechanism may relate to its autophagy regulation.
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Affiliation(s)
- Zengjie Zhang
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Chenggui Wang
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Jialiang Lin
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Haiming Jin
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Ke Wang
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Yingzhao Yan
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Jianle Wang
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Congcong Wu
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Majid Nisar
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Naifeng Tian
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Xiangyang Wang
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
| | - Xiaolei Zhang
- * Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's, Hospital of Wenzhou Medical University, 109 West Xueyuan Road, Wenzhou 325027, Zhejiang Province, P. R. China
- † Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, Zhejiang Province, P. R. China
- ‡ The Second School of Medicine, Wenzhou Medical University, Wenzhou, P. R. China
- § Chinese Orthopaedic Regenerative Medicine Society, Wenzhou, P. R. China
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Li Z, Li X, Chen C, Li S, Shen J, Tse G, Chan MTV, Wu WKK. Long non-coding RNAs in nucleus pulposus cell function and intervertebral disc degeneration. Cell Prolif 2018; 51:e12483. [PMID: 30039593 PMCID: PMC6528936 DOI: 10.1111/cpr.12483] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Accepted: 05/15/2018] [Indexed: 12/12/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is the major cause of low back pain which incurs a significant public-health and economic burden. The aetiology of IDD is complex, with developmental, genetic, biomechanical and biochemical factors contributing to the disease development. Deregulated phenotypes of nucleus pulposus cells, including aberrant differentiation, apoptosis, proliferation and extracellular matrix deposition, are involved in the initiation and progression of IDD. Non-coding RNAs, including long non-coding RNAs (lncRNAs), have recently been identified as important regulators of gene expression. Research into their roles in IDD has been very active over the past 5 years. Our review summarizes current research regarding the roles of deregulated lncRNAs (eg, RP11-296A18.3, TUG1, HCG18) in modulating nucleus pulposus cell functions in IDD. These exciting findings suggest that specific modulation of lncRNAs or their downstream signalling pathways might be an attractive approach for developing novel therapeutics for IDD.
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Affiliation(s)
- Zheng Li
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xingye Li
- Department of Orthopedic SurgeryBeijing Jishuitan HospitalFourth Clinical College of Peking UniversityJishuitan Orthopaedic College of Tsinghua UniversityBeijingChina
| | - Chong Chen
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Shugang Li
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Jianxiong Shen
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Gary Tse
- Department of Medicine and TherapeuticsThe Chinese University of Hong KongHong KongChina
- Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong KongChina
| | - Matthew T. V. Chan
- Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong KongChina
| | - William K. K. Wu
- Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong KongChina
- Department of Anaesthesia and Intensive Care and State Key Laboratory of Digestive DiseasesThe Chinese University of Hong KongHong KongChina
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Park S, Oh J, Kim YI, Choe SK, Chun CH, Jin EJ. Suppression of ABCD2 dysregulates lipid metabolism via dysregulation of miR-141:ACSL4 in human osteoarthritis. Cell Biochem Funct 2018; 36:366-376. [DOI: 10.1002/cbf.3356] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 06/29/2018] [Accepted: 08/11/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Sujeong Park
- Department of Biological Sciences, College of Natural Sciences; Wonkwang University; Iksan South Korea
| | - Jinjoo Oh
- Department of Biological Sciences, College of Natural Sciences; Wonkwang University; Iksan South Korea
| | - Yong-Il Kim
- Department of Microbiology; Wonkwang University School of Medicine; Iksan South Korea
| | - Seong-Kyu Choe
- Department of Microbiology; Wonkwang University School of Medicine; Iksan South Korea
| | - Churl-Hong Chun
- Department of Orthopedic Surgery; Wonkwang University School of Medicine; Iksan South Korea
| | - Eun-Jung Jin
- Department of Biological Sciences, College of Natural Sciences; Wonkwang University; Iksan South Korea
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Aberrantly expressed messenger RNAs and long noncoding RNAs in degenerative nucleus pulposus cells co-cultured with adipose-derived mesenchymal stem cells. Arthritis Res Ther 2018; 20:182. [PMID: 30115120 PMCID: PMC6097446 DOI: 10.1186/s13075-018-1677-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 07/17/2018] [Indexed: 02/07/2023] Open
Abstract
Background Stem cell therapy is considered as a promising alternative to treat intervertebral disc degeneration (IDD). Extensive work had been done on identifying and comparing different types of candidate stem cells, both in vivo and in vitro. However, few studies have shed light on degenerative nucleus pulposus cells (NPCs), especially their biological behavior under the influence of exogenous stem cells, specifically the gene expression and regulation pattern. In the present study, we aimed to determine messenger RNAs (mRNAs) and long non-coding RNAs (lncRNAs), which are differentially expressed during the co-culturing process with adipose-derived mesenchymal stem cells (ASCs) and to explore the involved signaling pathways and the regulatory networks. Methods We compared degenerative NPCs co-cultured with ASCs with those cultured solely using lncRNA-mRNA microarray analysis. Based on these data, we investigated the significantly regulated signaling pathways based on the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway database. Moreover, 23 micro RNAs (miRNAs), which were demonstrated to be involved in IDD were chosen; we investigated their theoretic regulatory importance associated with our microarray data. Results We found 632 lncRNAs and 1682 mRNAs were differentially expressed out of a total of 40,716 probes. We then confirmed the microarray data by real-time PCR. Furthermore, we demonstrated 197 upregulated, and 373 downregulated Gene Ontology terms and 176 significantly enriched pathways, such as the mitogen-activated protein kinase (MAPK) pathway. Also, a signal-net was constructed to reveal the interplay among differentially expressed genes. Meanwhile, a mRNA-lncRNA co-expression network was constructed for the significantly changed mRNAs and lncRNAs. Also, the competing endogenous RNA (ceRNA) network was built. Conclusion Our results present the first comprehensive identification of differentially expressed lncRNAs and mRNAs of degenerative NPCs, altered by co-culturing with ASCs, and outline the gene expression regulation pattern. These may provide valuable information for better understanding of stem cell therapy and potential candidate biomarkers for IDD treatment. Electronic supplementary material The online version of this article (10.1186/s13075-018-1677-x) contains supplementary material, which is available to authorized users.
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Kang L, Yang C, Song Y, Zhao K, Liu W, Hua W, Wang K, Tu J, Li S, Yin H, Zhang Y. MicroRNA-494 promotes apoptosis and extracellular matrix degradation in degenerative human nucleus pulposus cells. Oncotarget 2018; 8:27868-27881. [PMID: 28427186 PMCID: PMC5438614 DOI: 10.18632/oncotarget.15838] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 02/20/2017] [Indexed: 12/19/2022] Open
Abstract
PURPOSE This study investigated the expression and function of the microRNA-494 in intervertebral disc degeneration (IDD). RESULTS MicroRNA-494 expression was upregulated during IDD progression; its overexpression increased the expression of ECM catabolic factors such as matrix metalloproteinase and A disintegrin and metalloproteinase with thrombospondin motif in NP cells while decreasing that of anabolic genes such as type II collagen and aggrecan; it also induced the apoptosis of NP cells, as determined by flow cytometry. These effects were reversed by microRNA-494 inhibitor treatment. SOX9 was identified as a target of negative regulation by microRNA-494. Promoter hypomethylation and NF-κB activation were associated with microRNA-494 upregulation in IDD. MATERIALS AND METHODS MicroRNA-494 expression in degenerative nucleus pulposus (NP) tissue was assessed by quantitative real-time PCR. The effect of microRNA-494 on extracellular matrix (ECM) metabolism and NP cell apoptosis was evaluated by transfection of microRNA-494 mimic or inhibitor. The regulation of SRY-related high mobility group box (SOX)9 expression by microRNA-494 was assessed with the luciferase reporter assay, and the methylation status of the microRNA-494 promoter was evaluated by methylation-specific PCR and bisulfite sequencing PCR. The role of activated nuclear factor (NF)-κB in the regulation of microRNA-494 expression was evaluated using specific inhibitors. CONCLUSIONS MicroRNA-494 promotes ECM degradation and apoptosis of degenerative human NP cells by directly targeting SOX9.
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Affiliation(s)
- Liang Kang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Cao Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yu Song
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Kangcheng Zhao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wei Liu
- Department of Orthopaedics, First Hospital of Wuhan, Wuhan 430022, China
| | - Wenbin Hua
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Kun Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Ji Tu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shuai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Huipeng Yin
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yukun Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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miR-27b promotes type II collagen expression by targetting peroxisome proliferator-activated receptor-γ2 during rat articular chondrocyte differentiation. Biosci Rep 2018; 38:BSR20171109. [PMID: 29187585 PMCID: PMC6435457 DOI: 10.1042/bsr20171109] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 12/23/2022] Open
Abstract
MicroRNAs (miRNAs) play an essential role in articular cartilage development and growth. However, the exact mechanisms involved in this process remain unknown. In the present study, we investigated the biological functions of miR-27b during hypertrophic differentiation of rat articular chondrocytes. Based on in situ hybridization and immunohistochemistry, we report that miR-27b expression is reduced in the hypertrophic zone of articular cartilage, but expression of peroxisome proliferator-activated receptor γ (Pparγ) is increased. Dual-luciferase reporter gene assay and Western blot analysis demonstrated that Pparγ2 is a target of miR-27b Overexpression of miR-27b inhibited expression of Pparγ2, as well as type X collagen (Col10a1) and matrix metalloproteinase 13 (Mmp13), while significantly promoting the expression of Sex-determining Region-box 9 (Sox9) and type II collagen (Col2a1) at both the mRNA and protein levels. Rosiglitazone, a Pparγ agonist, suppressed Col2a1 expression, while promoting expression of runt-related transcription factor 2 (Runx2) and Col10a1 in a concentration-dependent manner. siRNA-mediated knockdown of Pparγ2 caused an increase in protein levels of Col2a1. The present study demonstrates that miR-27b regulates chondrocyte hypertrophy in part by targetting Pparγ2, and that miR-27b may have important therapeutic implications in cartilage diseases.
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MicroRNA-132 upregulation promotes matrix degradation in intervertebral disc degeneration. Exp Cell Res 2017; 359:39-49. [DOI: 10.1016/j.yexcr.2017.08.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 08/05/2017] [Indexed: 11/24/2022]
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Hua WB, Wu XH, Zhang YK, Song Y, Tu J, Kang L, Zhao KC, Li S, Wang K, Liu W, Shao ZW, Yang SH, Yang C. Dysregulated miR-127-5p contributes to type II collagen degradation by targeting matrix metalloproteinase-13 in human intervertebral disc degeneration. Biochimie 2017; 139:74-80. [PMID: 28559201 DOI: 10.1016/j.biochi.2017.05.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 05/25/2017] [Indexed: 12/31/2022]
Abstract
BACKGROUND Intervertebral disc degeneration (IDD) is a chronic disease associated with the degradation of extracellular matrix (ECM). Matrix metalloproteinase (MMP)-13 is a major enzyme that mediates the degradation of ECM components. MMP-13 has been predicted to be a potential target of miR-127-5p. However, the exact function of miR-127-5p in IDD is still unclear. OBJECTIVE We designed this study to evaluate the correlation between miR-127-5p level and the degeneration of human intervertebral discs and explore the potential mechanisms. METHODS miR-127-5p levels and MMP-13 mRNA levels were detected by quantitative real-time polymerase chain reaction (qPCR). To determine whether MMP-13 is a target of miR-127-5p, dual luciferase reporter assays were performed. miR-127-5p mimic and miR-127-5p inhibitor were used to overexpress or downregulate miR-127-5p expression in human NP cells, respectively. Small interfering RNA (siRNA) was used to knock down MMP-13 expression in human NP cells. Type II collagen expression in human NP cells was detected by qPCR, western blotting, and immunofluorescence staining. RESULTS We confirmed that miR-127-5p was significantly downregulated in nucleus pulposus (NP) tissue of degenerative discs and its expression was inversely correlated with MMP-13 mRNA levels. We reveal that MMP-13 may act as a target of miR-127-5p. Expression of miR-127-5p was inversely correlated with type II collagen expression in human NP cells. Moreover, suppression of MMP-13 expression by siRNA blocked downstream signaling and increased type II collagen expression. CONCLUSION Dysregulated miR-127-5p contributed to the degradation of type II collagen by targeting MMP-13 in human IDD. Our findings highlight that miR-127-5p may serve as a new therapeutic target in IDD.
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Affiliation(s)
- Wen-Bin Hua
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Xing-Huo Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Yu-Kun Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Yu Song
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Ji Tu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Liang Kang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Kang-Cheng Zhao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Shuai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Kun Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Wei Liu
- Department of Orthopaedics, Wuhan No.1 Hospital, 215 Zhongshan Avenue, Wuhan 430022, China
| | - Zeng-Wu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Shu-Hua Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China
| | - Cao Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
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Matrix Metalloproteinase Gene Activation Resulting from Disordred Epigenetic Mechanisms in Rheumatoid Arthritis. Int J Mol Sci 2017; 18:ijms18050905. [PMID: 28441353 PMCID: PMC5454818 DOI: 10.3390/ijms18050905] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 12/29/2022] Open
Abstract
Matrix metalloproteinases (MMPs) are implicated in the degradation of extracellular matrix (ECM). Rheumatoid arthritis (RA) synovial fibroblasts (SFs) produce matrix-degrading enzymes, including MMPs, which facilitate cartilage destruction in the affected joints in RA. Epigenetic mechanisms contribute to change in the chromatin state, resulting in an alteration of gene transcription. Recently, MMP gene activation has been shown to be caused in RASFs by the dysregulation of epigenetic changes, such as histone modifications, DNA methylation, and microRNA (miRNA) signaling. In this paper, we review the role of MMPs in the pathogenesis of RA as well as the disordered epigenetic mechanisms regulating MMP gene activation in RASFs.
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MicroRNA-15b silencing inhibits IL-1β-induced extracellular matrix degradation by targeting SMAD3 in human nucleus pulposus cells. Biotechnol Lett 2016; 39:623-632. [PMID: 28039556 DOI: 10.1007/s10529-016-2280-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 12/20/2016] [Indexed: 12/12/2022]
Abstract
OBJECTIVES To determine the role of microRNA-15b (miR-15b) in interleukin-1 beta (IL-1β)-induced extracellular matrix (ECM) degradation in the nucleus pulposus (NP). RESULTS MiR-15b was up-regulated in degenerative NP tissues and in IL-1β-stimulated NP cells, as compared to the levels in normal controls (normal tissue specimens from patients with idiopathic scoliosis). Bioinformatics and luciferase activity analyses showed that mothers against decapentaplegic homolog 3 (SMAD3), a key mediator of the transforming growth factor-β signaling pathway, was directly targeted by miR-15b. Functional analysis demonstrated that miR-15b overexpression aggravated IL-1β-induced ECM degradation in NP cells, while miR-15b inhibition had the opposite effects. Prevention of IL-1β-induced NP ECM degeneration by the miR-15b inhibitor was attenuated by small-interfering-RNA-mediated knockdown of SMAD3. In addition, activation of MAP kinase and nuclear factor-κB up-regulated miR-15b expression and down-regulated SMAD3 expression in IL-1β-stimulated NP cells. CONCLUSIONS MiR-15b contributes to ECM degradation in intervertebral disc degeneration (IDD) via targeting of SMAD3, thus providing a novel therapeutic target for IDD treatment.
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