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Wang H, Zhang W, Cai Y, Guo Q, Pan L, Chu G, Chen J, Yuan Z, Li B. Moderate mechanical stimulation antagonizes inflammation of annulus fibrosus cells through YAP-mediated suppression of NF-κB signaling. J Orthop Res 2023; 41:2667-2684. [PMID: 37132373 DOI: 10.1002/jor.25596] [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: 06/13/2022] [Revised: 04/25/2023] [Accepted: 05/01/2023] [Indexed: 05/04/2023]
Abstract
Intervertebral disc degeneration (IDD) is a leading cause of low back pain. The inflammatory responses caused by aberrant mechanical loading are one of the major factors leading to annulus fibrosus (AF) degeneration and IDD. Previous studies have suggested that moderate cyclic tensile strain (CTS) can regulate anti-inflammatory activities of AF cells (AFCs), and Yes-associated protein (YAP) as a mechanosensitive coactivator senses diverse types of biomechanical stimuli and translates them into biochemical signals controlling cell behaviors. However, it remains poorly understood whether and how YAP mediates the effect of mechanical stimuli on AFCs. In this study, we aimed to investigate the exact effects of different CTS on AFCs as well as the role of YAP signaling involving in it. Our results found that 5% CTS inhibited the inflammatory response and promoted cell growth through inhibiting the phosphorylation of YAP and nuclear localization of NF-κB, while 12% CTS had a significant proinflammatory effect with the inactivation of YAP activity and the activation of NF-κB signaling in AFCs. Furthermore, moderate mechanical stimulation may alleviate the inflammatory reaction of intervertebral discs through YAP-mediated suppression of NF-κB signaling in vivo. Therefore, moderate mechanical stimulation may serve as a promising therapeutic approach for the prevention and treatment of IDD.
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Affiliation(s)
- Huan Wang
- Department of Orthopaedic Surgery, School of Biology & Basic Medical Sciences, Suzhou Medical College, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Jiangsu, Suzhou, China
| | - Weidong Zhang
- Department of Orthopaedic Surgery, School of Biology & Basic Medical Sciences, Suzhou Medical College, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Jiangsu, Suzhou, China
- Department of Orthopaedic Surgery, Affiliated Hospital of Nantong University, Jiangsu, Nantong, China
| | - Yan Cai
- Department of Orthopaedic Surgery, School of Biology & Basic Medical Sciences, Suzhou Medical College, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Jiangsu, Suzhou, China
| | - Qianping Guo
- Department of Orthopaedic Surgery, School of Biology & Basic Medical Sciences, Suzhou Medical College, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Jiangsu, Suzhou, China
| | - Liangbin Pan
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Jiangsu, Suzhou, China
| | - Genglei Chu
- Department of Orthopaedic Surgery, School of Biology & Basic Medical Sciences, Suzhou Medical College, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Jiangsu, Suzhou, China
| | - Jianquan Chen
- Department of Orthopaedic Surgery, School of Biology & Basic Medical Sciences, Suzhou Medical College, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Jiangsu, Suzhou, China
- School of Medicine, Hangzhou City University, Zhejiang, Hangzhou, China
| | - Zhangqin Yuan
- Department of Orthopaedic Surgery, School of Biology & Basic Medical Sciences, Suzhou Medical College, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Jiangsu, Suzhou, China
| | - Bin Li
- Department of Orthopaedic Surgery, School of Biology & Basic Medical Sciences, Suzhou Medical College, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Jiangsu, Suzhou, China
- School of Medicine, Hangzhou City University, Zhejiang, Hangzhou, China
- Collaborative Innovation Center of Hematology, Soochow University, Jiangsu, Suzhou, China
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S100A8 accelerates wound healing by promoting adipose stem cell proliferation and suppressing inflammation. Regen Ther 2022; 21:166-174. [PMID: 35891712 PMCID: PMC9294055 DOI: 10.1016/j.reth.2022.06.010] [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: 01/07/2022] [Revised: 06/01/2022] [Accepted: 06/23/2022] [Indexed: 11/22/2022] Open
Abstract
Adipose-derived stem cells (ADSCs) are stem cells with multidirectional differentiation potential isolated from adipose tissue. They have the same immunomodulatory effect as bone marrow mesenchymal stem cells in wound repair and immune regulation as bone marrow. The mechanism of action of ADSCs in skin wound repair has not been elucidated. S100A8 is a calcium and zinc binding protein, but its role in skin wound healing is rarely reported. We herein show that S100A8 overexpression significantly promoted ADSC proliferation and differentiation, whereas S100A8 knockdown yielded the opposite results. A skin injury model with bone exposure was created in rats by surgically removing the skin from the head and exposing the skull. The wounds were treated with S100A8-overexpressing or S100A8-knockdown ADSCs, and wound healing was monitored. The serum levels of the inflammation-related factors tumor necrosis factor-α and interleukin-6 were decreased significantly after S100A8 overexpression, while the angiogenic factor vascular endothelial growth factor and connective tissue generating factor showed the opposite trend. Histological staining revealed that granulation tissue neovascularization was more pronounced in wounds treated with S100A8-overexpressing ADSCs than that in the control group. We conclude that S100A8 promotes the proliferation of ADSCs and inhibits inflammation to improve skin wound healing.
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Zhang W, Wang H, Yuan Z, Chu G, Sun H, Yu Z, Liang H, Liu T, Zhou F, Li B. Moderate mechanical stimulation rescues degenerative annulus fibrosus by suppressing caveolin-1 mediated pro-inflammatory signaling pathway. Int J Biol Sci 2021; 17:1395-1412. [PMID: 33867854 PMCID: PMC8040478 DOI: 10.7150/ijbs.57774] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/22/2021] [Indexed: 12/29/2022] Open
Abstract
Mechanical loading can induce or antagonize the extracellular matrix (ECM) synthesis, proliferation, migration, and inflammatory responses of annulus fibrosus cells (AFCs), depending on the loading mode and level. Caveolin-1 (Cav1), the core protein of caveolae, plays an important role in cellular mechanotransduction and inflammatory responses. In the present study, we presented that AFCs demonstrated different behaviors when subjected to cyclic tensile strain (CTS) for 24 h at a magnitude of 0%, 2%, 5% and 12%, respectively. It was found that 5% CTS had positive effects on cell proliferation, migration and anabolism, while 12% CTS had the opposite effects. Besides, cells exposed to interleukin-1β stimulus exhibited an increase expression in inflammatory genes, and the expression of these genes decreased after exposure to moderate mechanical loading with 5% CTS. In addition, 5% CTS decreased the level of Cav1 and integrin β1 and exhibited anti-inflammatory effects. Moreover, the expression of integrin β1 and p-p65 increased in AFCs transfected with Cav1 plasmids. In vivo results revealed that moderate mechanical stimulation could recover the water content and morphology of the discs. In conclusion, moderate mechanical stimulation restrained Cav1-mediated signaling pathway and exhibited anti-inflammatory effects on AFCs. Together with in vivo results, this study expounds the underlying molecular mechanisms on the effect of moderate mechanical stimulation on intervertebral discs (IVDs) and may provide a new therapeutic strategy for the treatment of IVD degeneration.
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Affiliation(s)
- Weidong Zhang
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Huan Wang
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Zhangqin Yuan
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Genglei Chu
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Heng Sun
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Zilin Yu
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Huan Liang
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Tao Liu
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Feng Zhou
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China
| | - Bin Li
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China.,China Orthopaedic Regenerative Medicine Group (CORMed), Hangzhou, Zhejiang, China
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Emam M, Keshta AT, Mohamed YM, Attia YA. Insight on Ameliorative Role of Selenium Nanoparticles and Niacin in Wound Healing on Adult Female Albino Mice. ACTA ACUST UNITED AC 2020. [DOI: 10.2174/2212796814666200818111849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Wound healing is a complex process necessary for repairing damaged
tissues and preventing infection. Selenium nanoparticles (Se NPs) were known due to
their antioxidant and antimicrobial effects, also niacin has angiogenesis and antioxidant effects
that are important in wound healing.
Objective:
The present study was conducted to investigate the effect of Se NPs and niacin in
reducing and accelerating the wound healing time in mice.
Methods:
A simple wet chemical method has been modified to synthesize Se NPs in order to
investigate their effect and niacin on reducing the wound healing in 80 adult female albino
mice (250 mm2 full thickness open excision wound) that were divided into eight groups (10
mice/each). After 30-days, the mice were sacrificed, blood and tissue samples were taken for
analysis.
Results:
The results showed that the percentage of wound area had been significantly reduced
in Se NPs and niacin treated groups compared to the positive control. The level of
Vascular Endothelial cell Growth Factor and Collagenase I in Se NPs and niacin groups significantly
exceed those of other groups while Nitric Oxide (NO) was significantly decreased
in treated groups. Liver and kidney functions showed the lower toxicity effect of Se NPs and
niacin. Skin tissue showed the wound healing effect of Se NPs and niacin by regenerating
skin layer compared to the positive group.
Conclusion:
Se NPs and niacin play an important role in accelerating and reducing the time
of wound healing while they were antagonistic to each other.
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Affiliation(s)
- Marwa Emam
- Chemistry Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
| | - Akaber T. Keshta
- Chemistry Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
| | - Yasser M.A. Mohamed
- Photochemistry Department, National Research Center, Dokki, Giza 12622, Egypt
| | - Yasser A. Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza 12613, Egypt
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Interleukin-6 from Adipose-Derived Stem Cells Promotes Tissue Repair by the Increase of Cell Proliferation and Hair Follicles in Ischemia/Reperfusion-Treated Skin Flaps. Mediators Inflamm 2019; 2019:2343867. [PMID: 31814799 PMCID: PMC6877947 DOI: 10.1155/2019/2343867] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/25/2019] [Accepted: 09/27/2019] [Indexed: 12/21/2022] Open
Abstract
The most common postoperative complication after reconstructive surgery is flap necrosis. Adipose-derived stem cells (ADSCs) and their secretomes are reported to mediate skin repair. This study was designed to investigate whether conditioned media from ADSCs (ADSC-CM) protects ischemia/reperfusion- (I/R-) induced injury in skin flaps by promoting cell proliferation and increasing the number of hair follicles. The mouse flap model of ischemia was ligating the long thoracic vessels for 3 h, followed by blood reperfusion. ADSC-CM was administered to the flaps, and their survival was observed on postoperative day 5. ADSC-CM treatment led to a significant increase in cell proliferation and the number of hair follicles. IL-6 levels in the lysate and CM from ADSCs were significantly higher than those from Hs68 fibroblasts. Furthermore, a strong decrease in cell proliferation and the number of hair follicles was observed after treatment with IL-6-neutralizing antibodies or si-IL-6-ADSC. In addition, ADSC transplantation increased flap repair, cell proliferation, and hair follicle number in I/R injury of IL-6-knockout mice. In conclusion, IL-6 secreted from ADSCs promotes the survival of I/R-induced flaps by increasing cell proliferation and the number of hair follicles. ADSCs represent a promising therapy for preventing skin flap necrosis following reconstructive and plastic surgery.
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Chen H, Hong X, He Y. Successful treatment of bronchial obstruction by flexible bronchoscopy and isoniazid: A case report. Exp Ther Med 2014; 7:397-400. [PMID: 24396413 PMCID: PMC3881032 DOI: 10.3892/etm.2013.1423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 11/11/2013] [Indexed: 12/24/2022] Open
Abstract
Interventional bronchology techniques have been employed as an effective first-line treatment in patients with tracheobronchial obstruction. However, recurrent stenosis produced by granulation tissue requires repeated procedures. Previous studies have indicated that isoniazid regulates collagen deposition and decreases collagen content. Thus, isoniazid has been successfully administered to patients with lesions who exhibited a delay in the healing process. A case of a left mainstem obstruction managed by interventional bronchology is described in the present study. Repeated bronchial stenosis was observed even following numerous treatment procedures, however, administration of isoniazid resulted in the inhibition of hypertrophic scar formation and prevention of repeated stenosis. The suppressive effect of isoniazid on granulation formation and further observations are reported. Few studies have been conducted with regard to the function of isoniazid in suppressing scar hyperplasia, therefore, the mechanism requires further investigation.
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Affiliation(s)
- Hengyi Chen
- Department of Respiratory Medicine, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China
| | - Xin Hong
- Department of Respiratory Medicine, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China
| | - Yong He
- Department of Respiratory Medicine, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China
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