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Wu Z, Yang Z, Liu L, Xiao Y. Natural compounds protect against the pathogenesis of osteoarthritis by mediating the NRF2/ARE signaling. Front Pharmacol 2023; 14:1188215. [PMID: 37324450 PMCID: PMC10266108 DOI: 10.3389/fphar.2023.1188215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 05/19/2023] [Indexed: 06/17/2023] Open
Abstract
Osteoarthritis (OA), a chronic joint cartilage disease, is characterized by the imbalanced homeostasis between anabolism and catabolism. Oxidative stress contributes to inflammatory responses, extracellular matrix (ECM) degradation, and chondrocyte apoptosis and promotes the pathogenesis of OA. Nuclear factor erythroid 2-related factor 2 (NRF2) is a central regulator of intracellular redox homeostasis. Activation of the NRF2/ARE signaling may effectively suppress oxidative stress, attenuate ECM degradation, and inhibit chondrocyte apoptosis. Increasing evidence suggests that the NRF2/ARE signaling has become a potential target for the therapeutic management of OA. Natural compounds, such as polyphenols and terpenoids, have been explored to protect against OA cartilage degeneration by activating the NRF2/ARE pathway. Specifically, flavonoids may function as NRF2 activators and exhibit chondroprotective activity. In conclusion, natural compounds provide rich resources to explore the therapeutic management of OA by activating NRF2/ARE signaling.
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Affiliation(s)
- Zhenyu Wu
- First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- First Clinical Medical College of Gannan Medical University, Ganzhou, China
| | - Zhouxin Yang
- First Clinical Medical College of Gannan Medical University, Ganzhou, China
| | - Luying Liu
- First Clinical Medical College of Gannan Medical University, Ganzhou, China
| | - Yong Xiao
- Jiangxi University of Traditional Chinese Medicine, Nanchang, China
- Xiaoyong Traditional Chinese Medicine Clinic in Yudu, Ganzhou, China
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2
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Yao Q, Wu X, Tao C, Gong W, Chen M, Qu M, Zhong Y, He T, Chen S, Xiao G. Osteoarthritis: pathogenic signaling pathways and therapeutic targets. Signal Transduct Target Ther 2023; 8:56. [PMID: 36737426 PMCID: PMC9898571 DOI: 10.1038/s41392-023-01330-w] [Citation(s) in RCA: 220] [Impact Index Per Article: 220.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 01/06/2023] [Accepted: 01/17/2023] [Indexed: 02/05/2023] Open
Abstract
Osteoarthritis (OA) is a chronic degenerative joint disorder that leads to disability and affects more than 500 million population worldwide. OA was believed to be caused by the wearing and tearing of articular cartilage, but it is now more commonly referred to as a chronic whole-joint disorder that is initiated with biochemical and cellular alterations in the synovial joint tissues, which leads to the histological and structural changes of the joint and ends up with the whole tissue dysfunction. Currently, there is no cure for OA, partly due to a lack of comprehensive understanding of the pathological mechanism of the initiation and progression of the disease. Therefore, a better understanding of pathological signaling pathways and key molecules involved in OA pathogenesis is crucial for therapeutic target design and drug development. In this review, we first summarize the epidemiology of OA, including its prevalence, incidence and burdens, and OA risk factors. We then focus on the roles and regulation of the pathological signaling pathways, such as Wnt/β-catenin, NF-κB, focal adhesion, HIFs, TGFβ/ΒΜP and FGF signaling pathways, and key regulators AMPK, mTOR, and RUNX2 in the onset and development of OA. In addition, the roles of factors associated with OA, including MMPs, ADAMTS/ADAMs, and PRG4, are discussed in detail. Finally, we provide updates on the current clinical therapies and clinical trials of biological treatments and drugs for OA. Research advances in basic knowledge of articular cartilage biology and OA pathogenesis will have a significant impact and translational value in developing OA therapeutic strategies.
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Affiliation(s)
- Qing Yao
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Xiaohao Wu
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chu Tao
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Weiyuan Gong
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Mingjue Chen
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Minghao Qu
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yiming Zhong
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Tailin He
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Sheng Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Guozhi Xiao
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China.
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3
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Chen J, Chen Z, Yuan P, Huang H, Wang J, Shi P, Sun X. ERK1 loss accelerates the progression of osteoarthritis in aged mice via NRF2/BACH1 signaling. Biochem Biophys Res Commun 2022; 622:129-135. [PMID: 35849954 DOI: 10.1016/j.bbrc.2022.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/02/2022] [Accepted: 07/04/2022] [Indexed: 12/14/2022]
Abstract
Osteoarthritis (OA) is now a common degenerative joint related disease. However, the clinical efficacy of drugs associated with cartilage regeneration remains limited. In our study, we firstly explored the role of ERK1 in the progression of OA. We clarified that ERK1-deficient mice were susceptible to age-related OA. The higher OARSI scores and more severe cartilage degeneration was observed in the ERK1-deficient mice. ERK1 deficiency decreased the nuclear transportation of Nrf2 in the chondrocytes and accelerated chondrocyte aging in vitro. Moreover, chondrocytes with ERK1 deficiency elevated the nuclear expression of BACH1, resulting in lowered expression of antioxidant enzymes in ERK1-deficient chondrocytes. The Nrf2 activator dimethyl fumarate (DMF) was used. Our experiments demonstrated the protective function of DMF against OA in ERK1 knockout mice. Above all, we confirmed the effects of ERK1 on the progression of OA and clarified the mechanisms underlying these effects. DMF might has significant use in the development of novel drugs for the therapy of OA in the future.
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Affiliation(s)
- Jian Chen
- Department of Orthopaedic, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China; Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, China
| | - Zhijun Chen
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China; Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, China
| | - Putao Yuan
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China; Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, China
| | - Hai Huang
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Jiying Wang
- Department of Orthopaedic, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Peihua Shi
- Department of Orthopaedic, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China; Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, China.
| | - Xuewu Sun
- Department of Orthopaedic, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China; Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, China.
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4
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Fujita M, Matsumoto T, Hayashi S, Hashimoto S, Nakano N, Maeda T, Kuroda Y, Takashima Y, Kikuchi K, Anjiki K, Ikuta K, Onoi Y, Tachibana S, Matsushita T, Iwaguro H, Sobajima S, Hiranaka T, Kuroda R. Paracrine effect of the stromal vascular fraction containing M2 macrophages on human chondrocytes through the Smad2/3 signaling pathway. J Cell Physiol 2022; 237:3627-3639. [PMID: 35766589 DOI: 10.1002/jcp.30823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 05/27/2022] [Accepted: 06/17/2022] [Indexed: 11/08/2022]
Abstract
The adipose-derived stromal vascular fraction (SVF) is composed of a heterogeneous mix of adipose-derived stem cells (ADSCs), macrophages, pericytes, fibroblasts, blood, and other cells. Previous studies have found that the paracrine effects of SVF cells may be therapeutic, but their role in osteoarthritis treatment remains unclear. This study aimed to investigate the therapeutic effect of SVF cells on chondrocytes. Chondrocytes were seeded on culture plates alone (control) or cocultured with SVF or ADSCs on cell culture inserts. After 48 h of coculture, chondrocyte collagen II, tissue inhibitors of metalloproteinases-3 (TIMP-3), and matrix metalloproteinases-13 (MMP-13) messenger RNA (mRNA) expression levels were evaluated using reverse-transcription polymerase chain reaction, and the transforming growth factor-β (TGF-β) levels in the supernatant were measured using ELISA. Immunohistochemical staining and flow cytometry were used to evaluate the macrophages in the SVF. These macrophages were characterized according to phenotype using the F4/80, CD86, and CD163 markers. To determine whether the Smad2/3 signaling pathways were involved, the chondrocytes were pre-treated with a Smad2/3 phosphorylation inhibitor and stimulated with the SVF, and then Smad2/3 phosphorylation levels were analyzed using western blot. The mRNA expression levels of various paracrine factors and chondrocyte pellet size were also assessed. Collagen II and TIMP-3 expression were higher in the SVF group than in the ADSC group and controls, while MMP-13 expression was the highest in the ADSC group and the lowest in the controls. TGF-β levels in the SVF group were also elevated. Immunohistochemical staining and flow cytometry revealed that the macrophages in the SVF were of the anti-inflammatory phenotype. Western blot analysis showed that the SVF increased Smad2/3 phosphorylation, while Smad2/3 inhibitors decreased phosphorylation. Smad2/3 inhibitors also reduced the expression of various other paracrine factors and decreased chondrocyte pellet size. These findings suggested that the paracrine effect of heterogeneous cells, such as anti-inflammatory macrophages, in the SVF partly supports chondrocyte regeneration through TGF-β-induced Smad2/3 phosphorylation.
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Affiliation(s)
- Masahiro Fujita
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shinya Hayashi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shingo Hashimoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Naoki Nakano
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Toshihisa Maeda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuichi Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshinori Takashima
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kenichi Kikuchi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kensuke Anjiki
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kemmei Ikuta
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuma Onoi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shotaro Tachibana
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takehiko Matsushita
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hideki Iwaguro
- Department of Orthopaedic Surgery, Sobajima Clinic, Osaka, Japan
| | - Satoshi Sobajima
- Department of Orthopaedic Surgery, Sobajima Clinic, Osaka, Japan
| | - Takafumi Hiranaka
- Department of Orthopaedic Surgery and Joint Surgery Centre, Takatsuki General Hospital, Osaka, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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5
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Luo G, Wang C, Li J, Zhang X, Sun Z, Song S, Fan C. Thrombin improves diabetic wound healing by ERK dependent and independent Smad2/3 linker region phosphorylation. Curr Pharm Des 2022; 28:1433-1443. [PMID: 35546767 DOI: 10.2174/1381612828666220511125237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 03/22/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Impaired wound healing is one of the most noteworthy features and troublesome complications of diabetes mellitus, which arouse a rising global health concern but without potent remedies. Thrombin is the major hemostatic agent applied at wound healing initiation and recently gained therapeutic credits in later phases. However, a rare investigation achieved prolonged use of thrombin and probed the detailed mechanism. OBJECTIVE To investigate the effects and mechanism of thrombin on diabetic skin wound healing. METHODS The effect of thrombin on fibroblast proliferation, α-SMA, and Collagen I expression was firstly studied in vitro by Cell Counting Kit 8 (CCK8) and western blotting. Then, the specific phosphorylation site of SMAD2/3 and their ERK1/2 dependence during thrombin treatment were assessed by western blotting for mechanism exploration. After that, full-thickness wound defects were established in diabetic male SD rats and treated with thrombin in the presence or absence of PD98059 to observe the in vivo effects of thrombin and to confirm its ERK dependence. RESULTS We found that thrombin promoted fibroblast proliferation and their α-SMA and Collagen I production. Mechanistically, thrombin induced phosphorylation of Smad2 linker region (Ser245/250/255) through ERK1/2 phosphorylation but promoted phosphorylation of Smad3 linker region (Ser204) independent of ERK1/2. Histological results showed that thrombin facilitated wound healing by promoting α-SMA and Collagen I expression, which was not abolished by inhibiting ERK phosphorylation. CONCLUSION Collectively, this study validated the therapeutic efficacy of thrombin on diabetic wound healing and identified both ERK-dependent and -independent Smad2/3 linker region phosphorylation as the essential signaling events in this process.
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Affiliation(s)
- Gang Luo
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People\'s Hospital, 600 Yishan Rd, Shanghai 200233, PR China
| | - Chongyang Wang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People\'s Hospital, 600 Yishan Rd, Shanghai 200233, PR China
| | - Juehong Li
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People\'s Hospital, 600 Yishan Rd, Shanghai 200233, PR China
| | - Xuancheng Zhang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People\'s Hospital, 600 Yishan Rd, Shanghai 200233, PR China
| | - Ziyang Sun
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People\'s Hospital, 600 Yishan Rd, Shanghai 200233, PR China
| | - Sa Song
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People\'s Hospital, 600 Yishan Rd, Shanghai 200233, PR China
| | - Cunyi Fan
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People\'s Hospital, 600 Yishan Rd, Shanghai 200233, PR China.,Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Building 3, Langu Science and Technology Park, Lane 70, Haiji 6th Road, Shanghai, China
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6
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Abstract
Transforming growth factor-beta2 (TGF-β2) is recognized as a versatile cytokine that plays a vital role in regulation of joint development, homeostasis, and diseases, but its role as a biological mechanism is understood far less than that of its counterpart, TGF-β1. Cartilage as a load-resisting structure in vertebrates however displays a fragile performance when any tissue disturbance occurs, due to its lack of blood vessels, nerves, and lymphatics. Recent reports have indicated that TGF-β2 is involved in the physiological processes of chondrocytes such as proliferation, differentiation, migration, and apoptosis, and the pathological progress of cartilage such as osteoarthritis (OA) and rheumatoid arthritis (RA). TGF-β2 also shows its potent capacity in the repair of cartilage defects by recruiting autologous mesenchymal stem cells and promoting secretion of other growth factor clusters. In addition, some pioneering studies have already considered it as a potential target in the treatment of OA and RA. This article aims to summarize the current progress of TGF-β2 in cartilage development and diseases, which might provide new cues for remodelling of cartilage defect and intervention of cartilage diseases.
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Affiliation(s)
- Mengmeng Duan
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qingxuan Wang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yang Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jing Xie
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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7
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Ock S, Ham W, Kang CW, Kang H, Lee WS, Kim J. IGF-1 protects against angiotensin II-induced cardiac fibrosis by targeting αSMA. Cell Death Dis 2021; 12:688. [PMID: 34244467 PMCID: PMC8270920 DOI: 10.1038/s41419-021-03965-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 12/12/2022]
Abstract
The insulin-like growth factor 1 receptor (IGF-1R) signaling in cardiomyocytes is implicated in physiological hypertrophy and myocardial aging. Although fibroblasts account for a small amount of the heart, they are activated when the heart is damaged to promote cardiac remodeling. However, the role of IGF-1R signaling in cardiac fibroblasts is still unknown. In this study, we investigated the roles of IGF-1 signaling during agonist-induced cardiac fibrosis and evaluated the molecular mechanisms in cultured cardiac fibroblasts. Using an experimental model of cardiac fibrosis with angiotensin II/phenylephrine (AngII/PE) infusion, we found severe interstitial fibrosis in the AngII/PE infused myofibroblast-specific IGF-1R knockout mice compared to the wild-type mice. In contrast, low-dose IGF-1 infusion markedly attenuated AngII-induced cardiac fibrosis by inhibiting fibroblast proliferation and differentiation. Mechanistically, we demonstrated that IGF-1-attenuated AngII-induced cardiac fibrosis through the Akt pathway and through suppression of rho-associated coiled-coil containing kinases (ROCK)2-mediated α-smooth muscle actin (αSMA) expression. Our study highlights a novel function of the IGF-1/IGF-1R signaling in agonist-induced cardiac fibrosis. We propose that low-dose IGF-1 may be an efficacious therapeutic avenue against cardiac fibrosis.
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MESH Headings
- Actins/metabolism
- Angiotensin II
- Animals
- Cardiomyopathies/chemically induced
- Cardiomyopathies/metabolism
- Cardiomyopathies/pathology
- Cardiomyopathies/prevention & control
- Cell Proliferation
- Cells, Cultured
- Disease Models, Animal
- Fibroblasts/drug effects
- Fibroblasts/metabolism
- Fibroblasts/pathology
- Fibrosis
- Infusions, Intravenous
- Insulin-Like Growth Factor I/administration & dosage
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Phenylephrine
- Proto-Oncogene Proteins c-akt/metabolism
- Rats
- Receptor, IGF Type 1/genetics
- Receptor, IGF Type 1/metabolism
- Signal Transduction
- rho-Associated Kinases/metabolism
- Mice
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Affiliation(s)
- Sangmi Ock
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Woojin Ham
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Chae Won Kang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Hyun Kang
- Department of Anesthesiology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Wang Soo Lee
- Division of Cardiology, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea.
| | - Jaetaek Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea.
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8
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Liu Y, Yin Z, Xu X, Liu C, Duan X, Song Q, Tuo Y, Wang C, Yang J, Yin S. Crosstalk between the activated Slit2-Robo1 pathway and TGF-β1 signalling promotes cardiac fibrosis. ESC Heart Fail 2021; 8:447-460. [PMID: 33236535 PMCID: PMC7835586 DOI: 10.1002/ehf2.13095] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/27/2020] [Accepted: 10/22/2020] [Indexed: 12/20/2022] Open
Abstract
AIMS Previous reports indicated that the Slit2-Robo signalling pathway is involved in embryonic heart development and fibrosis in other solid organs, but its function in adult cardiac fibrosis has not been investigated. Here, we investigate the role of the Slit2-Robo1 signalling pathway in cardiac fibrosis. METHODS AND RESULTS The right atrial tissue samples were obtained from patients with valvular heart disease complicated by atrial fibrillation during heart valve surgery and from healthy heart donors. The fibrotic animal model is created by performing transverse aortic constriction (TAC) surgery. The Robo1, Slit2, TGF-β1, and collagen I expression levels in human and animal samples were evaluated by immunohistochemistry and western blot analysis. Echocardiography measured the changes in heart size and cardiac functions of animals. Angiotensin II (Ang II), Slit2-siRNA, TGF-β1-siRNA, recombinant Slit2, and recombinant TGF-β1 were transfected to cardiac fibroblasts (CFs) respectively to observe their effects on collagen I expression level. The right atrial appendage of patients with valvular heart disease complicated by atrial fibrillation found significantly up-regulated Slit2, Robo1, TGF-β1, and collagen I expression levels. TAC surgery leads to heart enlargement, cardiac fibrosis, and up-regulation of Slit2, Robo1, TGF-β1, and collagen I expression levels in animal model. Robo1 antagonist R5 and TGF-β1 antagonist SB431542 suppressed cardiac fibrosis in TAC mice. Treatment with 100 nM Ang II in CFs caused significantly increased Slit2, Robo1, Smad2/3, TGF-β1, collagen I, PI3K, and Akt expression levels. Transfecting Slit2-siRNA and TGF-β1-siRNA, respectively, into rat CFs significantly down-regulated Smad2/3 and collagen I expression, inhibiting the effects of Ang II. Recombinant Slit2 activated the TGF-β1/Smad signalling pathway in CFs and up-regulated Periostin, Robo1, and collagen I expression. CONCLUSIONS The Slit2-Robo1 signalling pathway interfered with the TGF-β1/Smad pathway and promoted cardiac fibrosis. Blockade of Slit2-Robo1 might be a new treatment for cardiac fibrosis.
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Affiliation(s)
- Yunqi Liu
- Department of Cardiac Surgery, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
- NCH Key Laboratory of Assisted CirculationSun Yat‐sen UniversityGuangzhouChina
| | - Ziwei Yin
- Division of BiosciencesUniversity College LondonLondonUK
| | - Xueqin Xu
- Department of Cardiac Surgery, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
- NCH Key Laboratory of Assisted CirculationSun Yat‐sen UniversityGuangzhouChina
| | - Chen Liu
- NCH Key Laboratory of Assisted CirculationSun Yat‐sen UniversityGuangzhouChina
- Department of Cardiology, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Xiaoying Duan
- Department of Cardiac Surgery, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
- NCH Key Laboratory of Assisted CirculationSun Yat‐sen UniversityGuangzhouChina
| | - Qinlan Song
- Department of Cardiac Surgery, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
- NCH Key Laboratory of Assisted CirculationSun Yat‐sen UniversityGuangzhouChina
| | - Ying Tuo
- Department of Pathology, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Cuiping Wang
- Department of Cardiothoracic Surgery ICU, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Jing Yang
- Department of Pediatric Dentistry, Stomatological HospitalSouthern Medical UniversityGuangzhouChina
| | - Shengli Yin
- Department of Cardiac Surgery, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
- NCH Key Laboratory of Assisted CirculationSun Yat‐sen UniversityGuangzhouChina
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9
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Niu YT, Xie L, Deng RR, Zhang XY. In the presence of TGF-β1, Asperosaponin VI promotes human mesenchymal stem cell differentiation into nucleus pulposus like- cells. BMC Complement Med Ther 2021; 21:32. [PMID: 33446173 PMCID: PMC7807821 DOI: 10.1186/s12906-020-03169-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 11/26/2020] [Indexed: 03/15/2023] Open
Abstract
Background The regeneration of nucleus pulposus (NP) cells is an effective method to prevent intervertebral disc degeneration (IVDD). In this study, we investigated the role of Asperosaponin VI (ASA VI), isolated from a traditional Chinese medicine (TCM), the root of Dipsacus asper Wall, in promoting human mesenchymal stem cell (HMSC) proliferation and differentiation into NP-like cells and explored the possible mechanism of action. Methods The effects of ASA VI on HMSC viability and proliferation were determined by the XTT method and EDU staining. Then, Real-time qPCR, immunocytochemistry and immunofluorescence assays were used to measure the effect of ASA VI on the expression of extracellular matrix (ECM) components, such as COL2A1, aggrecan, SOX9, KRT19, PAX1, and glycosaminoglycans (GAGs), in NP cells. In addition, Western blot assay was used to measure the expression of p-ERK1/2 and p-smad2/3. Results ASA VI was able to promote the proliferation and differentiation of HMSCs into NP-like cells, and the optimum concentration was 1 mg/L. Western blot assay indicated that the possible mechanism might be related to the activation of p-ERK1 / 2 and p-Smad2 / 3. Conclusions ASA VI can promote the proliferation and differentiation of HMSCs into NP-like cells, which can potentially be used as a treatment for IVDD. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-020-03169-y.
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Affiliation(s)
- Yong-Tao Niu
- Department of Spine Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China
| | - Lin Xie
- Department of Spine Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China.
| | - Rong-Rong Deng
- Department of Spine Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China
| | - Xiao-Yu Zhang
- Department of Spine Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China
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10
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Zhao DL, Li HT, Liu SH. TIMP3/TGF‑β1 axis regulates mechanical loading‑induced chondrocyte degeneration and angiogenesis. Mol Med Rep 2020; 22:2637-2644. [PMID: 32945489 PMCID: PMC7453520 DOI: 10.3892/mmr.2020.11386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 04/15/2020] [Indexed: 12/24/2022] Open
Abstract
Chondrocytes in injured cartilage tissue are susceptible to mechanical loading; mechanical overloading can induce cartilage degeneration. The aim of the present study was to investigate whether mechanical loading can regulate chondrocyte degeneration and angiogenesis via the tissue inhibitor of matrix metalloproteinase-3 (TIMP3)/transforming growth factor (TGF)-β1 axis. Primary human chondrocytes were obtained from knee articular cartilage of a healthy donor. Then, normal chondrocytes or TIMP3 lentivirus-transfected (LV-TIMP3) chondrocytes were subjected to mechanical loading (10 MPa compression). Then, chondrocytes were stimulated with 1 µg/ml lipopolysaccharide (LPS) or treated with LDN-193189 (inhibitor of TGF-β1 signaling pathway). In addition, human umbilical vein endothelial cells (HUVECs) were co-cultured with chondrocytes or LV-TIMP3 chondrocytes. The expression levels of collagen-I, proteoglycan, TIMP3, TGF-β1, Smad2 and Smad3 were detected by reverse transcription-quantitative PCR and western blotting. Moreover, cell apoptosis and viability were determined using flow cytometry and MTT analysis, while cell migration was observed by Transwell assays. In addition, the vascular endothelial growth factor (VEGF)/VEGF receptor (R)2 binding rate in HUVECs was detected by a solid-phase binding assay. It was demonstrated that mechanical loading significantly inhibited the expression levels of collagen-I and proteoglycan in chondrocytes, as well as reducing cell proliferation and promoting cell apoptosis. In addition, the expression levels of TIMP3, TGF-β1, phosphorylated (p)-Smad2 and p-Smad3 were significantly decreased in degenerated chondrocytes that were induced by LPS, as well as in chondrocytes treated with LDN-193189. Furthermore, TIMP3 overexpression suppressed cell migration and reduced the VEGF/VEGFR2 binding rate in HUVECs. Mechanical loading significantly inhibited the expression levels of TIMP3, TGF-β1, p-Smad2 and p-Smad3 in chondrocytes, and also increased cell migration of HUVECs; TGF-β1 treatment or TIMP3 overexpression reversed these effects. Thus, the TIMP3/TGF-β1 axis may be a vital signaling pathway in mechanical loading-induced chondrocyte degeneration and angiogenesis.
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Affiliation(s)
- De-Lai Zhao
- No. 8 Orthopaedic Ward, Harbin Fifth Hospital, Harbin, Heilongjiang 150040, P.R. China
| | - Hong-Tao Li
- Section l, Department of Orthopaedics, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang 150040, P.R. China
| | - Shao-Hui Liu
- No. 8 Orthopaedic Ward, Harbin Fifth Hospital, Harbin, Heilongjiang 150040, P.R. China
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11
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Zhou J, Liu S, Guo L, Wang R, Chen J, Shen J. NMDA receptor-mediated CaMKII/ERK activation contributes to renal fibrosis. BMC Nephrol 2020; 21:392. [PMID: 32907546 PMCID: PMC7488001 DOI: 10.1186/s12882-020-02050-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 08/30/2020] [Indexed: 02/08/2023] Open
Abstract
Background This study aimed to understand the mechanistic role of N-methyl-D-aspartate receptor (NMDAR) in acute fibrogenesis using models of in vivo ureter obstruction and in vitro TGF-β administration. Methods Acute renal fibrosis (RF) was induced in mice by unilateral ureteral obstruction (UUO). Histological changes were observed using Masson’s trichrome staining. The expression levels of NR1, which is the functional subunit of NMDAR, and fibrotic and epithelial-to-mesenchymal transition markers were measured by immunohistochemical and Western blot analysis. HK-2 cells were incubated with TGF-β, and NMDAR antagonist MK-801 and Ca2+/calmodulin-dependent protein kinase II (CaMKII) antagonist KN-93 were administered for pathway determination. Chronic RF was introduced by sublethal ischemia–reperfusion injury in mice, and NMDAR inhibitor dextromethorphan hydrobromide (DXM) was administered orally. Results The expression of NR1 was upregulated in obstructed kidneys, while NR1 knockdown significantly reduced both interstitial volume expansion and the changes in the expression of α-smooth muscle actin, S100A4, fibronectin, COL1A1, Snail, and E-cadherin in acute RF. TGF-β1 treatment increased the elongation phenotype of HK-2 cells and the expression of membrane-located NR1 and phosphorylated CaMKII and extracellular signal–regulated kinase (ERK). MK801 and KN93 reduced CaMKII and ERK phosphorylation levels, while MK801, but not KN93, reduced the membrane NR1 signal. The levels of phosphorylated CaMKII and ERK also increased in kidneys with obstruction but were decreased by NR1 knockdown. The 4-week administration of DXM preserved renal cortex volume in kidneys with moderate ischemic–reperfusion injury. Conclusions NMDAR participates in both acute and chronic renal fibrogenesis potentially via CaMKII-induced ERK activation.
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Affiliation(s)
- Jingyi Zhou
- Kidney Disease Center, the First Affiliated Hospital, College of Medicine, Zhejiang University, Qingchun Road 79, Hangzhou, 310003, China.,Key Laboratory of Nephropathy, Hangzhou, Zhejiang Province, China.,Kidney Disease Immunology Laboratory, the Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, China.,Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, China
| | - Shuaihui Liu
- Kidney Disease Center, the First Affiliated Hospital, College of Medicine, Zhejiang University, Qingchun Road 79, Hangzhou, 310003, China.,Key Laboratory of Nephropathy, Hangzhou, Zhejiang Province, China.,Kidney Disease Immunology Laboratory, the Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, China.,Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, China
| | - Luying Guo
- Kidney Disease Center, the First Affiliated Hospital, College of Medicine, Zhejiang University, Qingchun Road 79, Hangzhou, 310003, China.,Key Laboratory of Nephropathy, Hangzhou, Zhejiang Province, China.,Kidney Disease Immunology Laboratory, the Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, China.,Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, China
| | - Rending Wang
- Kidney Disease Center, the First Affiliated Hospital, College of Medicine, Zhejiang University, Qingchun Road 79, Hangzhou, 310003, China.,Key Laboratory of Nephropathy, Hangzhou, Zhejiang Province, China.,Kidney Disease Immunology Laboratory, the Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, China.,Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, China
| | - Jianghua Chen
- Kidney Disease Center, the First Affiliated Hospital, College of Medicine, Zhejiang University, Qingchun Road 79, Hangzhou, 310003, China. .,Key Laboratory of Nephropathy, Hangzhou, Zhejiang Province, China. .,Kidney Disease Immunology Laboratory, the Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, China. .,Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, China.
| | - Jia Shen
- Kidney Disease Center, the First Affiliated Hospital, College of Medicine, Zhejiang University, Qingchun Road 79, Hangzhou, 310003, China. .,Key Laboratory of Nephropathy, Hangzhou, Zhejiang Province, China. .,Kidney Disease Immunology Laboratory, the Third-Grade Laboratory, State Administration of Traditional Chinese Medicine of China, Hangzhou, China. .,Key Laboratory of Multiple Organ Transplantation, Ministry of Health of China, Hangzhou, China.
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12
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Sisto M, Lorusso L, Ingravallo G, Ribatti D, Lisi S. TGFβ1-Smad canonical and -Erk noncanonical pathways participate in interleukin-17-induced epithelial-mesenchymal transition in Sjögren's syndrome. J Transl Med 2020; 100:824-836. [PMID: 31925325 DOI: 10.1038/s41374-020-0373-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/23/2019] [Accepted: 12/30/2019] [Indexed: 12/22/2022] Open
Abstract
Interleukin-17 (IL-17) is a pleiotropic cytokine that plays a primary role in triggering epithelial-mesenchymal transition (EMT) in many chronic inflammatory diseases. EMT plays a critical role in the progression of salivary gland (SG) fibrosis in primary Sjögren's syndrome (pSS). This study focused on the activation of the canonical TGF-β1/Smad2/3 and noncanonical TGF-β1/Erk1/2 pathways in IL-17-dependent TGFβ1-induced EMT in human SG epithelial cells (SGEC) derived from healthy subjects. The expression of phosphorylated Smad2/3 and Erk1/2 during IL-17 treatment-stimulated EMT was evaluated in healthy SGEC. Cotreatment with IL-17 and specific TGFβ receptor type I kinase inhibitor SB431542, or Erk 1/2 inhibitor U0126, abrogates the corresponding morphological changes and EMT phenotypic markers expression in healthy SGEC. Interestingly, inhibition of canonical TGFβ1/Smad2/3 signal transduction had no effect on activation of the noncanonical TGFβ1/Erk1/2/EMT pathway, suggesting that the two pathways act independently in activating IL-17-dependent EMT in SGEC.
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Affiliation(s)
- Margherita Sisto
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs (SMBNOS), Section of Human Anatomy and Histology, University of Bari "Aldo Moro", Bari, Italy.
| | - Loredana Lorusso
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs (SMBNOS), Section of Human Anatomy and Histology, University of Bari "Aldo Moro", Bari, Italy
| | - Giuseppe Ingravallo
- Department of Emergency and Organ Transplantation (DETO), Pathology Section, University of Bari "Aldo Moro", Bari, Italy
| | - Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs (SMBNOS), Section of Human Anatomy and Histology, University of Bari "Aldo Moro", Bari, Italy
| | - Sabrina Lisi
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs (SMBNOS), Section of Human Anatomy and Histology, University of Bari "Aldo Moro", Bari, Italy
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13
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Li Y, Zhang T, Tian W, Hu H, Xin Z, Ma X, Ye C, Hang K, Han X, Zhao J, Li W. Loss of TIMP3 expression induces inflammation, matrix degradation, and vascular ingrowth in nucleus pulposus: A new mechanism of intervertebral disc degeneration. FASEB J 2020; 34:5483-5498. [PMID: 32107793 DOI: 10.1096/fj.201902364rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 02/05/2020] [Accepted: 02/12/2020] [Indexed: 02/06/2023]
Abstract
Low back pain (LBP) is one of the most common complains in orthopedic outpatient department and intervertebral disc degeneration (IDD) is one of the most important reasons of LBP. The mechanisms of IDD contain a complex biochemical cascade which includes inflammation, vascular ingrowth, and results in degradation of matrix. In our study, we used both in vitro and in vivo models to investigate the relation between tissue inhibitor of metalloproteinase-3 (TIMP3) expression and IDD. Loss of TIMP3 expression was found in degenerative intervertebral disc (IVD), this change of expression was closely related with the dephosphorylation of smad2/3. Overexpression of TIMP3 significantly inhibited the release of TNF-α and matrix degradation induced by Lipopolysaccharide. Vascular ingrowth was also suppressed by TIMP3 in the in vitro and in vivo models. Further, animal experiments confirmed that the degeneration of IVD was reduced after overexpression of TIMP3 in nucleus pulposus. Taken together, our results indicated TIMP-3 might play an important role in the pathogenesis of IDD and therefore be a potential therapeutic target in the future.
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Affiliation(s)
- Yan Li
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Ting Zhang
- Department of Radiotherapy, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenjia Tian
- Department of Endocrinology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Hejia Hu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Zengfeng Xin
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Xiaojing Ma
- Department of Pathology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chenyi Ye
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Kai Hang
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, China
| | - Xiuguo Han
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jie Zhao
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Weixu Li
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, China
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14
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Lu W, He Z, Shi J, Wang Z, Wu W, Liu J, Kang H, Li F, Liang S. AMD3100 Attenuates Post-Traumatic Osteoarthritis by Maintaining Transforming Growth Factor-β1-Induced Expression of Tissue Inhibitor of Metalloproteinase-3 via the Phosphatidylinositol 3-Kinase/Akt Pathway. Front Pharmacol 2020; 10:1554. [PMID: 32038242 PMCID: PMC6987846 DOI: 10.3389/fphar.2019.01554] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 12/02/2019] [Indexed: 12/20/2022] Open
Abstract
AMD3100 is a small-molecule inhibitor of the C-X-C motif chemokine ligand 12/C-X-C chemokine receptor type 4 (CXCL12/CXCR4) axis, while its role in aggrecan metabolism is unclear. We hypothesized that the AMD3100 modulates the transforming growth factor-β1 (TGF-β1)-induced expression of tissue inhibitor of metalloproteinase-3 (TIMP-3) in chondrocytes. We evaluated expression of CXCL12/CXCR4 and TIMP-3 in the knee joints of rats with and without osteoarthritis (OA) by immunohistochemistry, immunofluorescence, Western blotting, and enzyme-linked immunosorbent assay (ELISA). The rats were divided into sham control, destabilization of the medial meniscus/AMD3100-treated (DMM/AMD3100-treated), and DMM/phosphate-buffered saline (PBS)-treated groups. After 6 weeks, the rats were euthanized and subjected to histological and immunohistochemical analyses. Also, interleukin (IL)-1-pretreated primary chondrocytes were cultured in the presence of empty control (−, −), CXCL12a (+,−), CXCL12a + small interfering RNA (siRNA) CXCR4 (+,+), or CXCL12a + siNC (+NC), and the expression levels of target markers were evaluated by Western blotting and real-time reverse transcription PCR (RT-PCR). The CXCL12/CXCR4 levels were higher, and the expression of TIMP-3 was lower, in the OA rats compared to the healthy control rats. The rats in the DMM/AMD3100-treated group revealed a markedly decreased immunological response and mild pathology. Treatment with CXCL12a increased expression of aggrecan and disintegrin and metalloproteinase with thrombospondin motifs-5 (ADAMTS-5) and suppressed that of TIMP-3 in IL-1-pretreated primary chondrocytes. TGF-β1 increased expression of TIMP-3, and this increase was reversed by CXCL12a via the phosphatidylinositol 3-kinase (PI3K)/Akt signaling pathway. Moreover, these effects were inhibited by the CXCR4 antagonist AMD3100 and the PI3K inhibitor LY303511. In conclusion, inhibition of the CXCL12a/CXCR4 signaling axis maintained TIMP-3 expression via the PI3K/Akt pathway. Our findings provide insight into the mechanism by which AMD3100 prevents OA.
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Affiliation(s)
- Weiwei Lu
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhiyi He
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia Shi
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhenggang Wang
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Wu
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jian Liu
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hao Kang
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Feng Li
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuang Liang
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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15
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Lu N, Malemud CJ. Extracellular Signal-Regulated Kinase: A Regulator of Cell Growth, Inflammation, Chondrocyte and Bone Cell Receptor-Mediated Gene Expression. Int J Mol Sci 2019; 20:ijms20153792. [PMID: 31382554 PMCID: PMC6696446 DOI: 10.3390/ijms20153792] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/15/2019] [Accepted: 07/23/2019] [Indexed: 12/17/2022] Open
Abstract
Extracellular signal-regulated kinase (ERK) is a member of the mitogen-activated protein kinase family of signaling molecules. ERK is predominantly found in two forms, ERK1 (p44) and ERK2 (p42), respectively. There are also several atypical forms of ERK, including ERK3, ERK4, ERK5 and ERK7. The ERK1/2 signaling pathway has been implicated in many and diverse cellular events, including proliferation, growth, differentiation, cell migration, cell survival, metabolism and transcription. ERK1/2 is activated (i.e., phosphorylated) in the cytosol and subsequently translocated to the nucleus, where it activates transcription factors including, but not limited to, ETS, c-Jun, and Fos. It is not surprising that the ERK1/2 signaling cascade has been implicated in many pathological conditions, namely, cancer, arthritis, chronic inflammation, and osteoporosis. This narrative review examines many of the cellular events in which the ERK1/2 signaling cascade plays a critical role. It is anticipated that agents designed to inhibit ERK1/2 activation or p-ERK1/2 activity will be developed for the treatment of those diseases characterized by dysregulated gene expression through ERK1/2 activation.
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Affiliation(s)
- Nathan Lu
- Department of Medicine, Division of Rheumatic Diseases, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA
| | - Charles J Malemud
- Department of Medicine, Division of Rheumatic Diseases, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA.
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16
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Ma T, Cheng Y, Tan L. Mechanism of miR-15a regulating the growth and apoptosis of human knee joint chondrocytes by targeting SMAD2. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:3188-3193. [PMID: 31366242 DOI: 10.1080/21691401.2019.1613420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objective: To investigate the effects of miR-15a on proliferation and apoptosis of human knee articular chondrocytes and explore its underlying mechanism. Methods: qRT-PCR was used to detect the expression of miR-15a in normal chondrocytes and knee arthritic chondrocytes; miR-con (transfected miR-con), miR-15a (transfected miR-15a mimics), anti-miR-con group (transfected anti-miR-con), anti-miR-15a group (transfected anti-miR-15a mimics), pcDNA group (transfected pcDNA), pcDNA-SMAD2 group (transfected pcDNA-SMAD2), the miR-15a + pcDNA group (co-transfected miR-15a and pcDNA), miR-15a + pcDNA-SMAD2 group (co-transfected miR-15a mimics and pcDNA-SMAD2), were transfected into knee articular chondrocytes by liposome method, respectively. The cell proliferation and apoptosis of each group were detected by MTT assay and flow cytometry. The protein expression of SMAD2 was detected by Western blot. The fluorescence activity of each group was detected by dual luciferase reporter gene assay. Results: The expression of miR-15a in knee arthritis chondrocytes was significantly increased (p < .05) compared with that in normal chondrocytes. Moreover, overexpression of miR-15a and silencing of SMAD2 inhibited proliferation and promoted apoptosis in knee arthritis chondrocyte. MiR-15a targeted SMAD2. Overexpression of SMAD2 reversed the inhibitory effects on proliferation and promotion effects on apoptosis induced by miR-15a in knee arthritis chondrocytes. Conclusion: miR-15a can inhibit the proliferation and promote apoptosis of knee arthritis chondrocytes. The mechanism may be related to SMAD2, which will provide a new target for the treatment of knee arthritis.
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Affiliation(s)
- Tengjun Ma
- a Department of Orthopedics, Juye County People's Hospital , Heze City , Shandong Province , China
| | - Yan Cheng
- b Disinfection Supply Room, Yidu Central Hospital , Weifang City , Shandong Province , China
| | - Liang Tan
- c Department of Orthopedics, Xuzhou City Hospital of TCM , Jiangsu Province , China
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17
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Zheng R, Xie L, Liu W, Guo Y, Wang Y, Wu Y, Liu Y, Luo H, Kang N, Yuan Q. Recombinant growth differentiation factor 11 impairs fracture healing through inhibiting chondrocyte differentiation. Ann N Y Acad Sci 2018; 1440:54-66. [PMID: 30575056 DOI: 10.1111/nyas.13994] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 10/05/2018] [Accepted: 11/14/2018] [Indexed: 02/05/2023]
Abstract
Growth differentiation factor 11 (GDF11), a secreted member of the transforming growth factor-β (TGF-β) superfamily, has been reported to have the capacity to reverse age-related pathologic changes and regulate organ regeneration after injury; however, the role of GDF11 in fracture healing and bone repair is still unclear. Here, we established a fracture model in 12-week-old male mice to observe two healing states: the cartilaginous callus and bony callus formation phases. Our results showed that recombinant GDF11 (rGDF11) injection inhibits cartilaginous callus maturation and hard callus formation, thereby impairing fracture healing in vivo. In vitro, rGDF11 administration inhibited chondrocyte differentiation and maturation by phosphorylating SMAD2/3 protein and inhibiting RUNX2 expression. Notably, inhibition of TGF-β activity by a SMAD-specific inhibitor attenuated GDF11 effects. Thus, our study demonstrates that, rather than acting as a rejuvenating agent, rGDF11 impairs fracture healing by inhibiting chondrocyte differentiation and maturation.
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Affiliation(s)
- Rixin Zheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Liang Xie
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weiqing Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuchen Guo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuan Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yunshu Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuting Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hongke Luo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ning Kang
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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18
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Wen J, Lin X, Gao W, Qu B, Ling Y, Liu R, Yu M. MEK inhibition prevents TGF‑β1‑induced myofibroblast transdifferentiation in human tenon fibroblasts. Mol Med Rep 2018; 19:468-476. [PMID: 30483803 PMCID: PMC6297771 DOI: 10.3892/mmr.2018.9673] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 10/22/2018] [Indexed: 12/24/2022] Open
Abstract
Subconjunctival fibrosis represents the primary cause of postoperative failure of trabeculectomy, and at present there is a lack of effective intervention strategies. The present study aimed to investigate the effect of the mitogen‑activated protein kinase kinase (MEK) inhibitor U0126 on human tenon fibroblast (HTF) myofibrosis transdifferentiation, and to illuminate the underlying molecular mechanisms involved. It was demonstrated that U0126 significantly inhibited the proliferation, migration and collagen contraction of HTFs stimulated with TGF‑β1. In addition, U0126 largely attenuated the TGF‑β1‑induced conversion of HTFs into myofibroblasts, as indicated by a downregulation of the mRNA and protein expression of α‑smooth muscle actin and zinc finger protein SNAI1, and by ameliorating the 3D‑collagen contraction response. Mechanistically, U0126 suppressed the TGF‑β1‑stimulated phosphorylation of mothers against decapentaplegic homolog 2/3, P38 mitogen‑activated protein kinase and extracellular signal‑regulated kinase 1/2, indicating that U0126 may inhibit HTF activation through the canonical and non‑canonical signaling pathways of TGF‑β1. Therefore, U0126 exhibits a potent anti‑fibrotic effect among HTFs, and the inhibition of MEK signaling may serve as an alternative intervention strategy for the treatment of trabeculectomy‑associated fibrosis.
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Affiliation(s)
- Jiamin Wen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xianchai Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Wuyou Gao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Bo Qu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Yunlan Ling
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Rongjiao Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Minbin Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
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19
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Yu Gan Long reduces rat liver fibrosis by blocking TGF-β1/Smad pathway and modulating the immunity. Biomed Pharmacother 2018; 106:1332-1338. [DOI: 10.1016/j.biopha.2018.07.081] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/13/2018] [Accepted: 07/15/2018] [Indexed: 12/13/2022] Open
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Castellano G, Franzin R, Stasi A, Divella C, Sallustio F, Pontrelli P, Lucarelli G, Battaglia M, Staffieri F, Crovace A, Stallone G, Seelen M, Daha MR, Grandaliano G, Gesualdo L. Complement Activation During Ischemia/Reperfusion Injury Induces Pericyte-to-Myofibroblast Transdifferentiation Regulating Peritubular Capillary Lumen Reduction Through pERK Signaling. Front Immunol 2018; 9:1002. [PMID: 29875766 PMCID: PMC5974049 DOI: 10.3389/fimmu.2018.01002] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 04/23/2018] [Indexed: 12/21/2022] Open
Abstract
Pericytes are one of the principal sources of scar-forming myofibroblasts in chronic kidneys disease. However, the modulation of pericyte-to-myofibroblast transdifferentiation (PMT) in the early phases of acute kidney injury is poorly understood. Here, we investigated the role of complement in inducing PMT after transplantation. Using a swine model of renal ischemia/reperfusion (I/R) injury, we found the occurrence of PMT after 24 h of I/R injury as demonstrated by reduction of PDGFRβ+/NG2+ cells with increase in myofibroblasts marker αSMA. In addition, PMT was associated with significant reduction in peritubular capillary luminal diameter. Treatment by C1-inhibitor (C1-INH) significantly preserved the phenotype of pericytes maintaining microvascular density and capillary lumen area at tubulointerstitial level. In vitro, C5a transdifferentiated human pericytes in myofibroblasts, with increased αSMA expression in stress fibers, collagen I production, and decreased antifibrotic protein Id2. The C5a-induced PMT was driven by extracellular signal-regulated kinases phosphorylation leading to increase in collagen I release that required both non-canonical and canonical TGFβ pathways. These results showed that pericytes are a pivotal target of complement activation leading to a profibrotic maladaptive cellular response. Our studies suggest that C1-INH may be a potential therapeutic strategy to counteract the development of PMT and capillary lumen reduction in I/R injury.
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Affiliation(s)
- Giuseppe Castellano
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Rossana Franzin
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Alessandra Stasi
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Chiara Divella
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Fabio Sallustio
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy.,Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Paola Pontrelli
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Giuseppe Lucarelli
- Urology, Andrology and Renal Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Michele Battaglia
- Urology, Andrology and Renal Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Staffieri
- Veterinary Surgery Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Antonio Crovace
- Veterinary Surgery Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Giovanni Stallone
- Nephrology, Dialysis and Transplantation Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Marc Seelen
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, Netherlands
| | - Mohamed R Daha
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, Netherlands.,Department of Nephrology, Leiden University Medical Centre, Leiden, Netherlands
| | - Giuseppe Grandaliano
- Nephrology, Dialysis and Transplantation Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Loreto Gesualdo
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
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Bai C, Gao Y, Zhang X, Yang W, Guan W. Melatonin promotes self-renewal of nestin-positive pancreatic stem cells through activation of the MT2/ERK/SMAD/nestin axis. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2017; 46:62-74. [PMID: 29037070 DOI: 10.1080/21691401.2017.1389747] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Although melatonin has been shown to exhibit a wide variety of biological functions, its effects on promotion of self-renewal in pancreatic stem cells remain unknown. In this study, we incubated murine pancreatic stem cells (PSCs) with various concentrations of melatonin (0.01, 0.1, 1, 10 or 100 μM) to screen for the optimum culture medium for increasing cell proliferation. We found that 10 μM melatonin can significantly increase proliferation and enhance expression of a stem cell marker, nestin, in PSCs via melatonin receptor 2 (MT2). Thus, we used 10 μM melatonin to study the melatonin-mediated molecular mechanisms of cell proliferation in PSCs. We applied extracellular signal-regulated kinase (ERK) pathway inhibitor SCH772984 and transforming growth factor beta (TGF-β) pathway inhibitor SB431542, along with interfering RNAs siERK1, siERK2, siSmad2, siSmad3, siSmad4 and siNestin, to melatonin-treated PSCs to research the roles of these genes in self-renewal. The results revealed a novel molecular mechanism by which melatonin promotes self-renewal of PSCs: a chain reaction in the MT2/ERK/SMAD/nestin axis promoted the aforementioned self-renewal as well as inhibited differentiation. In addition, upregulation of nestin created a positive feedback loop in the regulation of the transforming growth factor beta 1 (TGF-β1)/SMADs pathway by promoting expression of Smad4. Conversely, knockdown of nestin significantly suppressed the proliferative effect in melatonin-treated PSCs. These are all novel mechanisms through which the ERK pathway cooperatively crosstalks with the SMAD pathway to regulate nestin expression, thereby enhancing self-renewal in PSCs.
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Affiliation(s)
- Chunyu Bai
- a Key Laboratory of Precision Oncology of Shandong Higher Education , Institute of precision medicine , Jining , Shandong Province , P. R. China.,b Institute of Animal Sciences , Chinese Academy of Agricultural Sciences , Beijing , P. R. China
| | - Yuhua Gao
- b Institute of Animal Sciences , Chinese Academy of Agricultural Sciences , Beijing , P. R. China.,c College of Basic Medicine , Jining Medical University , Jining , Shandong Province , P. R. China
| | - Xiangyang Zhang
- c College of Basic Medicine , Jining Medical University , Jining , Shandong Province , P. R. China
| | - Wancai Yang
- a Key Laboratory of Precision Oncology of Shandong Higher Education , Institute of precision medicine , Jining , Shandong Province , P. R. China.,d Department of Pathology , University of Illinois at Chicago , Chicago , IL , USA
| | - Weijun Guan
- b Institute of Animal Sciences , Chinese Academy of Agricultural Sciences , Beijing , P. R. China
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22
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Hu B, Xu C, Cao P, Tian Y, Zhang Y, Shi C, Xu J, Yuan W, Chen H. TGF-β Stimulates Expression of Chondroitin Polymerizing Factor in Nucleus Pulposus Cells Through the Smad3, RhoA/ROCK1, and MAPK Signaling Pathways. J Cell Biochem 2017; 119:566-579. [PMID: 28608941 DOI: 10.1002/jcb.26215] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 06/12/2017] [Indexed: 01/01/2023]
Abstract
The enzyme chondroitin polymerizing factor (ChPF) is primarily involved in extension of the chondroitin sulfate backbone required for the synthesis of sulfated glycosaminoglycan (sGAG). Transforming growth factor beta (TGF-β) upregulates sGAG synthesis in nucleus pulposus cells; however, the mechanisms mediating this induction are incompletely understood. Our study demonstrated that ChPF expression was negatively correlated with the grade of degenerative intervertebral disc disease. Treatment of nucleus pulposus cells with TGF-β induced ChPF expression and enhanced Smad2/3, RhoA/ROCK activation, and the JNK, p38, and ERK1/2 MAPK signaling pathways. Selective inhibitors of Smad2/3, RhoA or ROCK1/2, and knockdown of Smad3 and ROCK1 attenuated ChPF expression and sGAG synthesis induced by TGF-β. In addition, we showed that RhoA/ROCK1 signaling upregulated ChPF via activation of the JNK pathway but not the p38 and ERK1/2 signaling pathways. Moreover, inhibitors of JNK, p38 and ERK1/2 activity also blocked ChPF expression and sGAG synthesis induced by TGF-β in a Smad3-independent manner. Collectively, our data suggest that TGF-β stimulated the expression of ChPF and sGAG synthesis in nucleus pulposus cells through Smad3, RhoA/ROCK1 and the three MAPK signaling pathways. J. Cell. Biochem. 119: 566-579, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Bo Hu
- Department of Spinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Chen Xu
- Department of Spinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Peng Cao
- Department of Spinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Ye Tian
- Department of Spinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Ying Zhang
- Department of Spinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Changgui Shi
- Department of Spinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Jun Xu
- Department of Orthopaedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, Hei Longjiang Province, 150086, China
| | - Wen Yuan
- Department of Spinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Huajiang Chen
- Department of Spinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
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23
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蒋 方, 肖 继, 陆 苑, 李 葳, 段 宇, 盛 宗, 李 绍. [Effect of superparamagnetic iron oxide on differentiation of rat bone marrow stem cells into chondrocytes in vitro]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2017; 37:652-658. [PMID: 28539289 PMCID: PMC6780477 DOI: 10.3969/j.issn.1673-4254.2017.05.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To observe the effect of superparamagnetic iron oxide (SPIO) on the differentiation of rat bone marrow stem cells (BMSCs) into chondrocytes in vitro and explore the possible mechanism. METHODS CCK8 assay was performed to examine the cytotoxicity of SPIO (1 and 5 µg/mL) on cultured SD rat BMSCs. Prussian blue staining and fluorescence excitation assay were used to assess the binding of the SPIO to BMSCs after the cells had been cultured in chondrocytes-induced medium in the presence of SPIO (1 and 5 µg/mL) for 9 days. The mRNA levels of COL2 α2, aggrecan and MMP13 in the cell culture were examined using Q-PCR, and the chondrogenic differentiation of the BMSCs was analyzed using alcian blue staining and immunofluorescence staining for COL2 α2. The protein levels of COL2 α2, aggrecan, MMP13, Ihh and PTHrP in the cells were examined using Western blotting. RESULTS CCK8 assay showed no significant toxicity of SPIO on BMSCs. Compared with the control cells, the cells cultured in the presence of SPIO showed increased expressions of COL2 α2 and aggrecan and decreased expression of MMP13 at both mRNA and protein levels with also significantly increased expressions of Ihh and PTHrP proteins. CONCLUSION SPIO can promote the differentiation of rat BMSCs into chondrocytes and up-regulate the Ihh/PTHrP signal pathway, suggesting the potential of SPIO as a new therapeutic agent for chondrocyte-related diseases.
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Affiliation(s)
- 方 蒋
- 南方医科大学第三附属医院影像科,广东 广州 510630Department of Imaging, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - 继杰 肖
- 南方医科大学第三附属医院影像科,广东 广州 510630Department of Imaging, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - 苑婷 陆
- 南方医科大学第三附属医院影像科,广东 广州 510630Department of Imaging, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - 葳 李
- 南方医科大学第三附属医院影像科,广东 广州 510630Department of Imaging, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - 宇雯 段
- 南方医科大学第三附属医院影像科,广东 广州 510630Department of Imaging, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - 宗海 盛
- 中国科学院深圳先进技术研究院,广东 深圳 518055Shenzhen Institute of Advanced Technology of Chinese Academy of Sciences, Shenzhen 518055, China
| | - 绍林 李
- 南方医科大学第三附属医院影像科,广东 广州 510630Department of Imaging, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
- 中山大学第五附属医院放射科,广东 珠海 519000Department of Radiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, China
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