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Vaspin Prevents Tumor Necrosis Factor-α-Induced Apoptosis in Cardiomyocytes by Promoting Autophagy. J Cardiovasc Pharmacol 2019; 77:257-267. [PMID: 29734265 DOI: 10.1097/fjc.0000000000000562] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Visceral adipose tissue-derived serine protease inhibitor (Vaspin) is an adipocytokine that has been shown to exert anti-inflammatory effects and inhibits apoptosis under diabetic conditions. This study was designed to investigate the impact of vaspin on autophagy in tumor necrosis factor (TNF)-α-induced injury in cardiomyocytes and its cardioprotective effects in the pathogenesis of diabetic cardiomyopathy (DCM). H9C2 cells were treated with TNF-α with or without vaspin in vitro. Tumor necrosis factor-α treatment inhibited autophagy and promoted apoptosis in H9C2 cells after stimulating for 24 hours. Pretreatment with vaspin significantly mitigated apoptosis induced by TNF-α partly because of augment effects of vaspin on autophagy as demonstrated by a higher ratio of LC3-II/LC3-I, higher expression of Beclin-1, and increased autophagosomes formation. Furthermore, the AKT agonist IGF-1 significantly reversed the effect of vaspin on autophagy. In vivo DCM model was also developed by treating rats with streptozotocin followed by intraperitoneal injection with vaspin. In DCM rats, upregulation of vaspin reversed cardiac dysfunction, as identified by increased left ventricular ejection fractions and fractional shortening levels, a higher Em/Am ratio, and lower levels of TNF-α, lactate dehydrogenase, creatine kinase, and creatine kinase-myocardial isoenzyme. In conclusion, vaspin attenuated the TNF-α-induced apoptosis by promoting autophagy probably through inhibiting the PI3K/AKT/mTOR pathway and further ameliorated the cardiac dysfunction in DCM rats.
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Li X, Lin F, Wu Y, Liu N, Wang J, Chen R, Lu Z. Resveratrol attenuates inflammation environment-induced nucleus pulposus cell senescence in vitro. Biosci Rep 2019; 39:BSR20190126. [PMID: 30962260 PMCID: PMC6509054 DOI: 10.1042/bsr20190126] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/19/2019] [Accepted: 04/01/2019] [Indexed: 01/02/2023] Open
Abstract
Intervertebral disc degeneration is a disease identified as an inflammation response-participated pathological process. As a classical cellular feature, disc cell senescence is reported to be closely related with disc cell senescence. Resveratrol has a protective role against inflammation in some cells. However, its biological effects on disc cells remain largely unclear. The present study was aimed to study the effects of resveratrol on disc nucleus pulposus (NP) cell senescence in an inflammation environment. Isolated NP cells were cultured in cultured medium with (control group) or without (inflammation group) inflammatory cytokine TNF-α and IL-1β for 14 days. Resveratrol was added along with the NP cells treated with inflammatory cytokines to investigate its effects. NP cell senescence was analyzed by senescence-associated β-Galactosidase (SA-β-Gal) staining, cell proliferation, G0/1 cell cycle arrest, telomerase activity, gene/protein expression of senescence markers (p16 and p53) and NP matrix biosynthesis. In addition, the intracellular reactive oxygen species (ROS) was also analyzed. Compared with the control group, inflammation group significantly increased SA-β-Gal activity and ROS content, decreased cell proliferation and telomerase activity, promoted G0/1 cell cycle arrest, up-regulated gene/protein expression of senescence markers (p16 and p53) and matrix catabolism enzymes (MMP-3, MMP-13 and ADAMTS-4), and down-regulated gene/protein expression of NP matrix macromolecules (aggrecan and collagen II). However, resveratrol partly reversed the effects of inflammatory cytokine on these cell senescence-associated parameters. Together, resveratrol was effective to suppress cell senescence in an inflammatory environment. The present study shows new knowledge on how to retard inflammation response-initiated disc degeneration.
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Affiliation(s)
- Xiaoming Li
- Department of Spinal Surgery, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi Province, China
| | - Feixiang Lin
- Department of Spinal Surgery, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi Province, China
| | - Yaohong Wu
- Department of Spinal Surgery, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi Province, China
| | - Ning Liu
- Department of Spinal Surgery, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi Province, China
| | - Jun Wang
- Department of Spinal Surgery, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi Province, China
| | - Rongchun Chen
- Department of Spinal Surgery, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi Province, China
| | - Zhijun Lu
- Department of Spinal Surgery, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi Province, China
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He J, Zhang A, Song Z, Guo S, Chen Y, Liu Z, Zhang J, Xu X, Liu J, Chu L. The resistant effect of SIRT1 in oxidative stress-induced senescence of rat nucleus pulposus cell is regulated by Akt-FoxO1 pathway. Biosci Rep 2019; 39:BSR20190112. [PMID: 30967498 PMCID: PMC6509061 DOI: 10.1042/bsr20190112] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/07/2019] [Accepted: 04/07/2019] [Indexed: 01/03/2023] Open
Abstract
Objective: The senescence of nucleus pulposus (NP) cells induced by oxidative stress is one of the important causes of intervertebral disc degeneration (IDD). Herein, we investigated the role and action mechanism of silent information regulator 1 (SIRT1) in oxidative stress-induced senescence of rat NP cell.Methods: Premature senescence of rat NP cells was induced by sublethal concentration of hydrogen peroxide (H2O2) (100 μM). SIRT1 was activated with SRT1720 (5 μM) to explore its effect on NP cells senescence. FoxO1 and Akt were inhibited by AS1842856 (0.2 μM) and MK-2206 (5 μM), respectively, to explore the role of Akt-FoxO1-SIRT1 axis in rat NP cells. Pretreatment with the resveratrol (20 μM), a common antioxidant and indirect activator of SIRT1, was done to investigate its role in senescent rat NP cells.Results: The mRNA and protein levels of SIRT1 were decreased in H2O2-induced senescent rat NP cells, and that specific activation of SIRT1 suppresses senescence. And the Akt-FoxO1 pathway, as the upstream of SIRT1, might be involved in the regulation of H2O2-induced senescence of rat NP cells by affecting the expression of SIRT1. In addition, the resveratrol played an anti-senescence role in rat NP cells, which might affect the Akt-FoxO1-SIRT1 axis.Conclusion: SIRT1 ameliorated oxidative stress-induced senescence of rat NP cell which was regulated by Akt-FoxO1 pathway, and resveratrol exerted anti-senescence effects by affecting this signaling axis.
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Affiliation(s)
- Junsheng He
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Ailiang Zhang
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Zhiwen Song
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Shiwu Guo
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Yuwei Chen
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Zhiyuan Liu
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
- Department of Orthopedics, The Affiliated Wujin Hospital of Jiangsu University, Changzhou 213003, China
| | - Jinlong Zhang
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Xu Xu
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Jinbo Liu
- Department of Spinal surgery, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Lei Chu
- Department of Orthopedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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Zhao L, Tian B, Xu Q, Zhang C, Zhang L, Fang H. Extensive mechanical tension promotes annulus fibrosus cell senescence through suppressing cellular autophagy. Biosci Rep 2019; 39:BSR20190163. [PMID: 30910846 PMCID: PMC6470409 DOI: 10.1042/bsr20190163] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/14/2019] [Accepted: 03/24/2019] [Indexed: 12/20/2022] Open
Abstract
Background: Mechanical load contributes a lot to the initiation and progression of disc degeneration. Annulus fibrosus (AF) cell biology under mechanical tension remains largely unclear.Objective: The present study was aimed to investigate AF cell senescence under mechanical tension and the potential role of autophagy.Methods: Rat AF cells were cultured and experienced different magnitudes (5% elongation and 20% elongation) of mechanical tension for 12 days. Control AF cells were kept static. Cell proliferation, telomerase activity, cell cycle fraction, and expression of senescence-related molecules (p16 and p53) and matrix macromolecules (aggrecan and collagen I) were analyzed to evaluate cell senescence. In addition, expression of Beclin-1 and LC3, and the ratio of LC3-II to LC3-I were analyzed to investigate cell autophagy.Results: Compared with the control group and 5% tension group, 20% tension group significantly decreased cell proliferation potency and telomerase activity, increased G1/G0 phase fraction, and up-regulated gene/protein expression of p16 and p53, whereas down-regulated gene/protein expression of aggrecan and collagen I. In addition, autophagy-related parameters such as gene/protein expression of Beclin-1 and LC3, and the ratio of LC3-II to LC3-I, were obviously suppressed in the 20% tension group.Conclusion: High mechanical tension promotes AF cell senescence though suppressing cellular autophagy. The present study will help us to better understand AF cell biology under mechanical tension and mechanical load-related disc degeneration.
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Affiliation(s)
- Liang Zhao
- Department of Emergency Trauma Surgery, Jining NO.1 People's Hospital, Affiliated Jining NO.1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, China
| | - Baofang Tian
- Department of Emergency Trauma Surgery, Jining NO.1 People's Hospital, Affiliated Jining NO.1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, China
| | - Qing Xu
- Department of Anesthesia Surgery, Jining NO.1 People's Hospital, Affiliated Jining NO.1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, China
| | - Cunxin Zhang
- Department of Spine Surgery, Jining NO.1 People's Hospital, Affiliated Jining NO.1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, China
| | - Luo Zhang
- Department of Emergency Trauma Surgery, Jining NO.1 People's Hospital, Affiliated Jining NO.1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, China
| | - Haolin Fang
- Department of Emergency Trauma Surgery, Jining NO.1 People's Hospital, Affiliated Jining NO.1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272000, China
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Yao J, Shi Z, Ma X, Xu D, Ming G. lncRNA GAS5/miR-223/NAMPT axis modulates the cell proliferation and senescence of endothelial progenitor cells through PI3K/AKT signaling. J Cell Biochem 2019; 120:14518-14530. [PMID: 31026096 DOI: 10.1002/jcb.28713] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 03/05/2019] [Accepted: 03/15/2019] [Indexed: 12/18/2022]
Abstract
Endothelial progenitor cells (EPCs) have been reported to replace the damaged endothelial cells to repair the injured or dead endothelium. However, EPC senescence might lead to the failure in EPC function. Thus, developing an in-depth understanding of the mechanism of EPC senescence might provide novel strategies for related vascular disorders' treatments. Herein, nicotinamide phosphoribosyltransferase (NAMPT) overexpression could increase cell proliferation and suppress cell senescence in EPCs. miR-223 directly bound to the 3'-untranslated region of NAMPT to inhibit its expression, therefore modulating EPC proliferation and senescence through NAMPT and phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) signaling. Long noncoding RNA (lncRNA) GAS5 sponges miR-223, consequently downregulating miR-223 expression. GAS5 knockdown inhibited EPC proliferation and promoted senescence. GAS5 might serve as a competing endogenous RNA for miR-223 to counteract miR-223-mediated suppression on NAMPT, thus regulating EPC proliferation and senescence via the PI3K/AKT signaling pathway. In summary, our findings provide a solid experimental basis for understanding the role and mechanism of lncRNA GAS5/miR-223/NAMPT axis in EPC proliferation and senescence.
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Affiliation(s)
- Jiamei Yao
- International Medical Center, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Gerontology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zanhua Shi
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xinhua Ma
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Daomiao Xu
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guangfeng Ming
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Jiang Y, Xie Z, Yu J, Fu L. Resveratrol inhibits IL-1β-mediated nucleus pulposus cell apoptosis through regulating the PI3K/Akt pathway. Biosci Rep 2019; 39:BSR20190043. [PMID: 30867252 PMCID: PMC6434388 DOI: 10.1042/bsr20190043] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 03/03/2019] [Accepted: 03/12/2019] [Indexed: 12/11/2022] Open
Abstract
Nucleus pulposus (NP) cell apoptosis is a classical cellular character during intervertebral disc degeneration (IDD). Previous studies have shown that inflammatory cytokine-induced NP cell apoptosis plays an important role in disc degeneration. The present study was aimed to investigate whether resveratrol can suppress IL-1β-mediated NP cell apoptosis and the potential signal transduction pathway. Experimental rat NP cells were treated with culture medium containing IL-1β (20 ng/ml) for 7 days. Control NP cells were cultured in the baseline medium. Resveratrol was added along with culture medium to investigate its effects. The inhibitor LY294002 was used to study the role of the PI3K/Akt pathway. NP cell apoptosis was reflected by the caspase-3 activity, cell apoptosis ratio, and expression of apoptosis-related molecules (Bcl-2, Bax, caspase-3, cleaved caspase-3, and cleaved PARP). Compared with the control NP cells, IL-1β significantly increased caspase-3 activity, NP cell apoptosis ratio and mRNA/protein expression of Bax, caspase-3, cleaved caspase-3 and cleaved PARP, but decreased mRNA expression of Bcl-2. However, resveratrol partly suppressed the effects of IL-1β on those cell apoptosis-related parameters. Further analysis showed that IL-1β significantly decreased activity of the PI3K/Akt pathway whereas resveratrol partly increased activity of the PI3K/Akt pathway in NP cells treated with IL-1β. Additionally, when the inhibitor LY294002 was added along with the resveratrol, its protective effects against IL-1β-induced NP cell apoptosis were attenuated. In conclusion, resveratrol suppresses IL-1β-mediated NP cell apoptosis through activating the PI3K/Akt pathway. Resveratrol may be an effective drug to attenuate inflammatory cytokine-induced disc degenerative changes.
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Affiliation(s)
- Yanhai Jiang
- Department of Orthopaedics, The Affiliated Weihai Second Hospital of Qingdao University, Weihai 264200, China
| | - Zhijie Xie
- Department of Orthopaedics, The Affiliated Weihai Second Hospital of Qingdao University, Weihai 264200, China
| | - Jinying Yu
- Department of Orthopaedics, The Affiliated Weihai Second Hospital of Qingdao University, Weihai 264200, China
| | - Lianqiang Fu
- Department of Orthopaedics, The Affiliated Weihai Second Hospital of Qingdao University, Weihai 264200, China
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Gong C, Pan W, Hu W, Chen L. Bone morphogenetic protein-7 retards cell subculture-induced senescence of human nucleus pulposus cells through activating the PI3K/Akt pathway. Biosci Rep 2019; 39:BSR20182312. [PMID: 30787052 PMCID: PMC6423306 DOI: 10.1042/bsr20182312] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/31/2019] [Accepted: 02/11/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Allogeneic disc cell is the main cellular resource in tissue engineering (TE)-based strategy to retard disc degeneration. However, the accessible disc cells often exhibit senescent phenotype when they are subcultured in vitro Hence, alleviating senescence of human disc cells during cell subculture is important for TE-based strategy to regenerate degenerative disc tissue. OBJECTIVE The present study was aimed to investigate whether bone morphogenetic protein-7 (BMP-7) can alleviate subculture-induced senescence of human nucleus pulposus (NP) cells in vitro Methods: NP cells from human disc tissue were subcultured in vitro for six passages. Exogenous BMP-7 was added along with the culture medium to investigate its effects on senescence of NP cells. The inhibitor LY294002 was used to investigate the role of the PI3K/Akt pathway. RESULTS Compared with the human disc NP cells cultured in the baseline culture medium, addition of BMP-7 increased cell proliferation potency and telomerase activity, decreased senescence-associated β-galactosidase (SA-β-Gal) activity and G0/G1 phase fraction, and down-regulated the expression of p16 and p53. Moreover, these positive effects of BMP-7 against senescence of human disc NP cells coincided with activation of the PI3K/Akt pathway. Further analysis showed that inhibitor LY294002 partly inhibited these protective effects of BMP-7 against senescence of human disc NP cells. CONCLUSION BMP-7 alleviates subculture-induced senescence of human disc NP cells through activating the PI3K/Akt pathway. The present study provides new knowledge on allogeneic disc NP cell-based TE strategy to regenerate degenerative human disc tissue.
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Affiliation(s)
- Chen Gong
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Soochow, Jiangsu, China
- Department of Orthopaedic Surgery, The People's Hospital of Bozhou, Bozhou, Anhui, China
| | - Wei Pan
- Department of Orthopaedic Surgery, The Affiliated Huai'an Hospital of Xuzhou University and The Second People's Hospital of Huai'an, Huaian, Jiangsu, China
| | - Wei Hu
- Department of Orthopaedic Surgery, The People's Hospital of Bozhou, Bozhou, Anhui, China
| | - Liang Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Soochow, Jiangsu, China
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Yang Y, Wang X, Liu Z, Xiao X, Hu W, Sun Z. Osteogenic protein-1 attenuates nucleus pulposus cell apoptosis through activating the PI3K/Akt/mTOR pathway in a hyperosmotic culture. Biosci Rep 2018; 38:BSR20181708. [PMID: 30459239 PMCID: PMC6294645 DOI: 10.1042/bsr20181708] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/13/2018] [Accepted: 11/17/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Previous studies have indicated that osteogenic protein-1 has protective effects on the biological functions of intervertebral disc cells. Hyperosmolarity is an important physicochemical factor within the disc nucleus pulposus (NP) region, which obviously promotes NP cell apoptosis. OBJECTIVE To study the effects of osteogenic protein-1 (OP-1) on NP cell apoptosis induced by hyperosmolarity and the potential signaling transduction pathway. METHODS Rat NP cells were cultured in a hyperosmotic medium with or without OP-1 addition for 7 days. Inhibitor 294002 and inhibitor FK-506 were used to investigate the role of the PI3K/Akt/mTOR pathway in this process. NP cell apoptosis were evaluated by cell apoptosis ratio, activity of caspase-3/9 and gene/protein expression of apoptosis-related molecules (Bax, Bcl-2, caspase-3/cleaved caspase-3 and cleaved PARP). RESULTS OP-1 addition obviously decreased cell apoptosis ratio and caspase-3/9 activity, down-regulated gene/protein expression of pro-apoptosis molecules (Bax, caspase-3/cleaved casepase-3 and cleaved PARP), up-regulated gene/protein expression of anti-apoptosis molecule (Bcl-2) in a hyperosmotic culture. Moreover, OP-1 addition significantly increased protein expression of p-Akt and p-mTOR. Further analysis showed that addition of LY294002 and FK-506 partly attenuated these protective effects of OP-1 against NP cell apoptosis and activation of the PI3K/Akt/mTOR pathway in a hyperosmotic culture. CONCLUSION OP-1 can attenuate NP cell apoptosis through activating the PI3K/Akt/mTOR pathway in a hyperosmotic culture. The present study sheds a new light on the protective role of OP-1 in regulating disc cell biology and provides some theoretical basis for the application of OP-1 in retarding/regenerating disc degeneration.
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Affiliation(s)
- Yan Yang
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
- Hunan Engineering Laboratory of Advanced Artificial Osteo-Materials, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
| | - Xiyang Wang
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
- Hunan Engineering Laboratory of Advanced Artificial Osteo-Materials, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
| | - Zheng Liu
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
- Hunan Engineering Laboratory of Advanced Artificial Osteo-Materials, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
| | - Xiao Xiao
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
- Hunan Engineering Laboratory of Advanced Artificial Osteo-Materials, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
| | - Wenkai Hu
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
- Hunan Engineering Laboratory of Advanced Artificial Osteo-Materials, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
| | - Zhicheng Sun
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
- Hunan Engineering Laboratory of Advanced Artificial Osteo-Materials, Xiangya Hospital, Central South University, Changsha 410008, Hunan, People's Republic of China
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Yu W, Fu J, Liu Y, Wu Y, Jiang D. Osteogenic protein-1 inhibits nucleus pulposus cell apoptosis through regulating the NF-κB/ROS pathway in an inflammation environment. Biosci Rep 2018; 38:BSR20181530. [PMID: 30341245 PMCID: PMC6246766 DOI: 10.1042/bsr20181530] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/04/2018] [Accepted: 10/11/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Intervertebral disc degeneration is a pathological process that involves an inflammation response. As a classical cellular feature, several studies have demonstrated that inflammation can promote nucleus pulposus (NP) cell apoptosis. Therefore, attenuation of NP cell apoptosis may be a potential way to retard disc degeneration. OBJECTIVE The present study was aimed to investigate the protective effects of osteogenic protein-1 (OP-1) against NP cell apoptosis in an inflammation environment, and the potential signaling transduction pathway. METHODS Rat NP cells were cultured in medium with or without inflammatory cytokine tumor necrosis factor (TNF)-α for 6 days. The exogenous TNF-α was added into the medium to investigate its protective effects. NP cell apoptosis was evaluated by cell apoptosis ratio, caspase-3 activity, gene/protein expression of apoptosis-related molecules (Bcl-2, Bax, and caspase-3). Additionally, the intracellular reactive oxygen species (ROS) content and activity of the NF-κB pathway were also analyzed. RESULTS Compared with the control NP cells, TNF-α significantly increased cell apoptosis ratio, caspase-3 activity, gene/protein expression of Bcl-2, Bax and caspase-3, ROS content, and activity of the NF-κB pathway. However, OP-1 partly attenuated these effects in NP cells treated with TNF-α. CONCLUSION OP-1 is effective in attenuating TNF-α-caused NP cell apoptosis, and the ROS/NF-κB pathway may be the potential signaling transduction pathway. The present study indicates that OP-1 may be helpful to inhibit inflammation-mediated disc degeneration.
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Affiliation(s)
- Wei Yu
- Department of Orthopedics, Chongqing Medical University, Chongqing 400016, China
- Department of Orthopedics, Inner Mongolia Baogang Hospital, Baotou, Neimenggu 014010, China
| | - Jiabin Fu
- Department of Orthopedics, Inner Mongolia Baogang Hospital, Baotou, Neimenggu 014010, China
| | - Yan Liu
- Department of Orthopedics, Inner Mongolia Baogang Hospital, Baotou, Neimenggu 014010, China
| | - Yuchi Wu
- Department of Orthopedics, Inner Mongolia Baogang Hospital, Baotou, Neimenggu 014010, China
| | - Dianming Jiang
- Department of Orthopedics, Chongqing Medical University, Chongqing 400016, China
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Wang J, Huang C, Lin Z, Pan X, Chen J, Zheng G, Tian N, Yan Y, Zhang Z, Hu J, Cheng P, Wang X, Zhang X. Polydatin suppresses nucleus pulposus cell senescence, promotes matrix homeostasis and attenuates intervertebral disc degeneration in rats. J Cell Mol Med 2018; 22:5720-5731. [PMID: 30358118 PMCID: PMC6201341 DOI: 10.1111/jcmm.13848] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/05/2018] [Accepted: 07/20/2018] [Indexed: 12/25/2022] Open
Abstract
Intervertebral disc degeneration (IVDD) is one of the major causes of low back pain. Polydatin (PD) has been shown to exert multiple pharmacological effects on different diseases; here, we test the therapeutic potential of PD for IVDD. In in-vitro experiments, we confirmed PD is nontoxic to nucleus pulposus cells (NPCs) under the concentration of 400 μmol/L. Furthermore, PD was able to decrease the level of senescence in TNF-α-treated NPCs, as indicated by β-gal staining as well as senescence markers p53 and p16 expression. In the aspect of extracellular matrix (ECM), PD not only reduced metalloproteinase 3 (MMP-3), metalloproteinase 13 (MMP-13) and a disintegrin-like and metalloproteinase thrombospondin type 1 motif 4 (ADAMTS-4) expression, but also increased aggrecan and collagen II levels. Mitochondrion is closely related to cellular senescence and ECM homeostasis; mechanistically, we found PD may rescue TNF-α-induced mitochondrial dysfunction, and it may also promote Nrf2 expression and activity. Silencing Nrf2 partly abolished the protective effects of PD on mitochondrial homeostasis, senescence and ECM homeostasis in TNF-α-treated NPCs. Correspondingly, PD ameliorated IVDD in rat model by promoting Nrf2 activity, preserving ECM and inhibiting senescence in nucleus pulposus cells. To sum up, our study suggests that PD exerts protective effects in NPCs against IVDD and reveals the underlying mechanism of PD on Nrf2 activation in NPCs.
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Affiliation(s)
- Jianle Wang
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Chongan Huang
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Zongze Lin
- Department of paediatricsThe Third Affiliated Hospital and Ruian People's Hospital of Wenzhou Medical UniversityWenzhouChina
| | - Xiangxiang Pan
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Jiaoxiang Chen
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Gang Zheng
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Naifeng Tian
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Yingzhao Yan
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Zengjie Zhang
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Jianing Hu
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Pu Cheng
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Xiangyang Wang
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
| | - Xiaolei Zhang
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
- Zhejiang Provincial Key Laboratory of OrthopaedicsWenzhouChina
- The Second School of MedicineWenzhou Medical UniversityWenzhouChina
- Chinese Orthopaedic Regenerative Medicine SocietyHangzhouChina
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Potential therapeutic role of Co-Q10 in alleviating intervertebral disc degeneration and suppressing IL-1β-mediated inflammatory reaction in NP cells. Int Immunopharmacol 2018; 64:424-431. [PMID: 30261465 DOI: 10.1016/j.intimp.2018.09.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/13/2018] [Accepted: 09/19/2018] [Indexed: 12/24/2022]
Abstract
Coenzyme Q10 (Co-Q10) is extraordinarily popular and has been used in abundant interventions as an antioxidant reagent that participates in numerous oxidation reactions. According to substantial evidence previously reported, interleukin-1β (IL-1β) is deemed to be one of the chief orchestrator molecules in the degeneration of intervertebral disc (IVD). However, it is unknown whether Co-Q10 is able to protect against IVD degeneration. In the current study, mouse-derived IVDs as well as primary human nucleus pulposus (NP) cells were isolated and cultured. NP cells were stimulated with IL-1β, with or without selective addition of Co-Q10 to investigate the therapeutic effect of Co-Q10 on IVD degeneration. Levels of IL-1β-induced inflammatory biomarkers including TNF-α, COX-2, IL-6 and iNOS were reduced by Co-Q10, which was possibly associated with inhibition of NF-κB signaling activation. Furthermore, Co-Q10 maintained the production of anabolic biomarkers in NP cells such as collagen 2, aggrecan and Sox-9 and altered the enhanced catabolism induced by IL-1β. Moreover, the therapeutic role of Co-Q10 in sustaining IVD tissue-enhanced anabolism is potentially dependent on activation of the Akt signaling pathway. In summary, Co-Q10 may potentially represent an available molecular target that may shed light on approaches to the prevention and treatment of IVD degeneration in the future.
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Nozu A, Hamano S, Tomokiyo A, Hasegawa D, Sugii H, Yoshida S, Mitarai H, Taniguchi S, Wada N, Maeda H. Senescence and odontoblastic differentiation of dental pulp cells. J Cell Physiol 2018; 234:849-859. [DOI: 10.1002/jcp.26905] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 06/12/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Aoi Nozu
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Sayuri Hamano
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science Kyushu University Fukuoka Japan
- OBT Research Center Faculty of Dental Science, Kyushu University Fukuoka Japan
| | - Atsushi Tomokiyo
- Division of Endodontology Kyushu University Hospital, Kyushu University Fukuoka Japan
| | - Daigaku Hasegawa
- Division of Endodontology Kyushu University Hospital, Kyushu University Fukuoka Japan
| | - Hideki Sugii
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Shinichiro Yoshida
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Hiromi Mitarai
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Shuntaro Taniguchi
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science Kyushu University Fukuoka Japan
| | - Naohisa Wada
- Division of General Dentistry, Kyushu University Hospital Kyushu University Fukuoka Japan
| | - Hidefumi Maeda
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science Kyushu University Fukuoka Japan
- Division of Endodontology Kyushu University Hospital, Kyushu University Fukuoka Japan
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63
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Myeloperoxidase in the inflamed colon: A novel target for treating inflammatory bowel disease. Arch Biochem Biophys 2018; 645:61-71. [DOI: 10.1016/j.abb.2018.03.012] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/08/2018] [Accepted: 03/12/2018] [Indexed: 12/17/2022]
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Wang W, Li P, Xu J, Wu X, Guo Z, Fan L, Song R, Wang J, Wei L, Teng H. Resveratrol attenuates high glucose-induced nucleus pulposus cell apoptosis and senescence through activating the ROS-mediated PI3K/Akt pathway. Biosci Rep 2018; 38:BSR20171454. [PMID: 29273676 PMCID: PMC5897744 DOI: 10.1042/bsr20171454] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 12/08/2017] [Accepted: 12/18/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Diabetes mellitus is closely correlated with disc degeneration. Nucleus pulposus (NP) cell apoptosis and senescence are typical cellular features within the degenerative disc. Resveratrol is a newly identified phytoalexin that has protective effects on cartilaginous tissue. OBJECTIVE To investigate the whether resveratrol can protect against high glucose-induced NP cell apoptosis and senescence, and the potential mechanism in this process. METHODS Rat NP cells were cultured in either 10% FBS culture medium (control group) or 10% FBS with a high glucose concentration (0.2 M, experiment group) for 3 days. Resveratrol or the combination of resveratrol and LY294002 was added into the culture medium of experiment group to investigate the effects of resveratrol and the PI3K/Akt pathway. RESULTS High glucose significantly promoted NP cell apoptosis and NP cell senescence compared with the control group. Resveratrol exhibited protective effects against high glucose-induced NP cell apoptosis and senescence. Further analysis showed that resveratrol suppressed reactive oxygen species (ROS) generation and increased the activity of the PI3K/Akt pathway under the high glucose condition. However, the LY294002 had no significant effects on ROS content in the resveratrol-treated high glucose group. CONCLUSION Resveratrol can attenuate high glucose-induced NP cell apoptosis and senescence, and the activation of ROS-mediated PI3K/Akt pathway may be the potential mechanism in this process.
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Affiliation(s)
- Wenping Wang
- Department of Cosmetic Plastic Surgery, Southwest Hospital, Third Military University, Chongqing 400038, China
| | - Pei Li
- Department of Orthopedic Surgery, No. 89 Hospital of PLA, Weifang, Shandong 261026, China
| | - Jiagang Xu
- Department of Pharmacy, No. 89 Hospital of PLA, Weifang, Shandong 261026, China
| | - Xiangkun Wu
- Department of Medical Service, No. 89 Hospital of PLA, Weifang, Shandong 261026, China
| | - Zhiliang Guo
- Department of Cosmetic Plastic Surgery, Southwest Hospital, Third Military University, Chongqing 400038, China
| | - Lijing Fan
- Department of Neurology, No. 89 Hospital of PLA, Weifang, Shandong 261026, China
| | - Ruipeng Song
- Department of Surgery, the People's Hospital of Wulian County, Rizhao, Shandong 262300, China
| | - Jianli Wang
- Department of Cosmetic Plastic Surgery, Southwest Hospital, Third Military University, Chongqing 400038, China
| | - Li Wei
- No. 89 Hospital of PLA, Weifang, 261026, Shandong, China
| | - Haijun Teng
- Department of Cosmetic Plastic Surgery, Southwest Hospital, Third Military University, Chongqing 400038, China
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Long-term exposure to TNF-α leads human skin fibroblasts to a p38 MAPK- and ROS-mediated premature senescence. Biogerontology 2018; 19:237-249. [DOI: 10.1007/s10522-018-9753-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 03/23/2018] [Indexed: 11/25/2022]
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Xu K, Xiao J, Zheng K, Feng X, Zhang J, Song D, Wang C, Shen X, Zhao X, Wei C, Huang D, Feng G. MiR-21/STAT3 Signal Is Involved in Odontoblast Differentiation of Human Dental Pulp Stem Cells Mediated by TNF-α. Cell Reprogram 2018; 20:107-116. [PMID: 29620442 DOI: 10.1089/cell.2017.0042] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Dental pulp stem cells (DPSCs), as one type of mesenchymal stem cells (MSCs), have the capability of self-renewal and multipotency to differentiate into several cell lineages, including osteogenesis, odontoblasts, chondrogenesis, neurogenesis, and adipogenesis. It has found that tumor necrosis factor-α (TNF-α) can promote osteogenic differentiation of human DPSCs in our previous studies. Other experimentation revealed that signal transducer and activator of transcription 3 (STAT3) underwent a rapid activation both in osteogenesis and inflammation microenvironment of MSCs in vitro. MicroRNAs (miRNAs or miRs) have been proved in previous studies to regulate MSCs differentiation in vitro. In this study, we identified miR-21 as a key miRNA contributed the functional axis of odontoblast differentiation induced by STAT3. It is observed that the expression of miR-21 and STAT3 increased gradually in low concentration (1-10 ng/mL) of TNF-α, while they were suppressed in high concentration (50-100 ng/mL). The upregulation of miR-21 may facilitate the odontoblast differentiation of DPSCs coordinating with STAT3. SiSTAT3 or treated by the inhibitor of STAT3, cucurbitacin I (Cuc I), significantly increased primary miR-21 expression along with decreased mature miR-21 expression. Meanwhile, the inhibition of miR-21 (anti-miR-21) decreased the activation of STAT3 as well as suppressed the marker proteins of odontoblast differentiation. The results revealed a new function of miR-21, suggesting that miR-21/STAT3 signal may act as a modulator within a complex network of factors to regulate odontoblast differentiation of human DPSCs. It may provide a novel therapeutic strategy to regulate the odontoblast differentiation of DPSCs.
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Affiliation(s)
- Ke Xu
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
| | - Jingwen Xiao
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
| | - Ke Zheng
- 2 Department of Stomatology, Wuxi No.2 People's Hospital , Wuxi, China
| | - Xingmei Feng
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
| | - Jinlong Zhang
- 3 Department of Spine Surgery, the Second Affiliated Hospital of Nantong University , Nantong, China
| | - Donghui Song
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
| | - Chenfei Wang
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
| | - Xiang Shen
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
| | - Xin Zhao
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
| | - Changbo Wei
- 4 Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University , Guangzhou, China
| | - Dan Huang
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
| | - Guijuan Feng
- 1 Department of Stomatology, Affiliated Hospital of Nantong University , Nantong, China
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Xie J, Li B, Zhang P, Wang L, Lu H, Song X. Osteogenic protein-1 attenuates the inflammatory cytokine-induced NP cell senescence through regulating the ROS/NF-κB pathway. Biomed Pharmacother 2018; 99:431-437. [DOI: 10.1016/j.biopha.2018.01.053] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 12/21/2017] [Accepted: 01/05/2018] [Indexed: 10/18/2022] Open
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Huang YH, Chen MH, Guo QL, Chen YX, Zhang LJ, Chen ZX, Wang XZ. Interleukin‑10 promotes primary rat hepatic stellate cell senescence by upregulating the expression levels of p53 and p21. Mol Med Rep 2018; 17:5700-5707. [PMID: 29436649 PMCID: PMC5866012 DOI: 10.3892/mmr.2018.8592] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 12/14/2017] [Indexed: 12/19/2022] Open
Abstract
Liver fibrosis is characterized by the excessive deposition of extracellular matrix (ECM) components, and activated hepatic stellate cells (HSCs) are a primary source of ECM. Several studies have revealed that the induction of HSC senescence may reduce liver fibrosis. The effect of interleukin-10 (IL-10) on the senescence of activated HSCs is not fully understood. Therefore, the present study examined its effects and potential mechanisms in activated primary rat HSCs. Collagenase perfusion and density gradient centrifugation methods were used to isolate rat HSCs. HSCs were identified by autofluorescence, Oil Red O staining and immunocytochemical analysis. Activated HSCs were treated with 0, 10, 20 or 40 ng/ml IL-10 for 24 h. Senescence-associated β-galactosidase (SA-β-Gal) staining, flow cytometry analysis and a cell counting kit-8 assay were performed to detect the senescence, apoptosis and viability of rat HSCs, respectively. Reverse transcription-quantitative polymerase chain reaction, western blot analysis and enzyme linked immunosorbent assays were used to detect the expression of senescence-associated proteins and cytokines. Freshly isolated rat HSCs exhibited a striking blue-green autofluorescence and HSC retinoid droplets were stained bright red by Oil Red O. Immunocytochemical analysis demonstrated the cytoplasmic expression of HSC markers desmin and α-smooth muscle actin. The number of SA-β-Gal positive HSCs, the apoptotic rate and the expression levels of p53, p21 and tumor necrosis factor-α were significantly increased following IL-10 treatment. HSC viability and IL-6 and IL-8 expression levels were significantly decreased compared with the control group. In summary, primary rat HSCs were successfully isolated and IL-10 was demonstrated to promote the senescence of activated primary rat HSCs through the upregulation of p53 and p21 expression.
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Affiliation(s)
- Yue-Hong Huang
- Department of Gastroenterology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Ming-Hua Chen
- Department of Gastroenterology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Qi-Lan Guo
- Department of Gastroenterology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Yun-Xin Chen
- Department of Gastroenterology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Li-Juan Zhang
- Department of Gastroenterology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Zhi-Xin Chen
- Department of Gastroenterology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Xiao-Zhong Wang
- Department of Gastroenterology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
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Pang L, Li P, Zhang R, Xu Y, Song L, Zhou Q. Role of p38-MAPK pathway in the effects of high-magnitude compression on nucleus pulposus cell senescence in a disc perfusion culture. Biosci Rep 2017; 37:BSR20170718. [PMID: 28620118 PMCID: PMC5635211 DOI: 10.1042/bsr20170718] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 06/14/2017] [Accepted: 06/14/2017] [Indexed: 01/12/2023] Open
Abstract
Nucleus pulposus (NP) cell senescence is a typical pathological feature within the degenerative intervertebral disc. As a potential inducing and aggregating factor of disc degeneration, mechanical overloading affects disc biology in multiple ways. The present study was to investigate the NP cell senescence-associated phenotype under intermittent high compression in an ex vivo disc bioreactor culture, and the role of the p38-MAPK pathway in this regulatory process. Porcine discs were cultured in culture chambers of a self-developed mechanically active bioreactor and subjected to different magnitudes of dynamic compression (low-magnitude and high-magnitude: 0.1 and 1.3 MPa at a frequency of 1.0 Hz for 2 h per day respectively) for 7 days. Non-compressed discs were used as controls. The inhibitor SB203580 was used to study the role of the p38-MAPK pathway in this process. Results showed that intermittent high-magnitude compression clearly induced senescence-associated changes in NP cells, such as increasing β-galactosidase-positive NP cells, decreasing PCNA-positive NP cells, promoting the formation of senescence-associated heterochromatic foci (SAHF), up-regulating the expression of senescence markers (p16 and p53), and attenuating matrix production. However, inhibition of the p38-MAPK pathway partly attenuated the effects of intermittent high-magnitude (1.3 MPa) compression on those described NP cell senescence-associated parameters. In conclusion, intermittent high-magnitude compression can induce NP cell senescence-associated changes in an ex vivo disc bioreactor culture, and the p38-MAPK pathway is involved in this process.
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Affiliation(s)
- Lianglong Pang
- Department of Spine Surgery, Liaocheng People's Hospital, Liaocheng, Shandong, 25200, China
| | - Pei Li
- Department of Orthopedic Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
- Department of Orthopedic Surgery, No.89 Hospital of PLA, Weifang, Shandong, 261026, China
| | - Ruijie Zhang
- Department of Respiratory Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, China
| | - Yuan Xu
- Department of Orthopedic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Lei Song
- Department of Orthopedic Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Qiang Zhou
- Department of Orthopedic Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
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Role of LncRNA TUG1 in intervertebral disc degeneration and nucleus pulposus cells via regulating Wnt/β-catenin signaling pathway. Biochem Biophys Res Commun 2017; 491:668-674. [DOI: 10.1016/j.bbrc.2017.07.146] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 07/25/2017] [Indexed: 11/23/2022]
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Li W, Wu X, Qu R, Wang W, Chen X, Cheng L, Liu Y, Guo L, Zhao Y, Liu C. Ghrelin protects against nucleus pulposus degeneration through inhibition of NF-κB signaling pathway and activation of Akt signaling pathway. Oncotarget 2017; 8:91887-91901. [PMID: 29190883 PMCID: PMC5696149 DOI: 10.18632/oncotarget.19695] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 06/27/2017] [Indexed: 12/11/2022] Open
Abstract
The objective of the present study was to examine the potential role of ghrelin in degeneration of nucleus pulposus (NP). Lower expression levels of ghrelin were found in human NP cells stimulated with interleukin-1β (IL-1β). Moreover, exogenous ghrelin suppressed IL-1β induced degeneration and inflammation associated biomarkers in human NP cells, including matrix metalloproteinase-13, a disintegrin and metalloproteinase with thrombospondin motifs-5, tumor necrosis factor-α and iNOS, which was possibly mediated by antagonization of NF-κB signaling. Moreover, ghrelin enhanced production of critical extracellular matrix of NP cells, including collagen 2, aggrecan, and Sox-9 in NP cells. Ghrelin also promoted NP tissue regeneration in a rabbit IVD degeneration model, which seems to be associated with growth hormone secretagogue receptor. Additionally, the protective role of ghrelin in anabolism potentially relies on activation of Akt signaling pathway. Taken together, ghrelin may represent a molecular target for prevention and treatment of intervertebral disc degeneration.
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Affiliation(s)
- Weiwei Li
- Department of Pathology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P. R. China
| | - Xihai Wu
- Department of Gynaecology and Obstetrics, Jinan Central Hospital, Shandong University, Jinan, Shandong 250012, P. R. China
| | - Ruize Qu
- Medical School of Shandong University, Jinan, Shandong 250012, P. R. China
| | - Wenhan Wang
- Medical School of Shandong University, Jinan, Shandong 250012, P. R. China
| | - Xiaomin Chen
- Medical School of Shandong University, Jinan, Shandong 250012, P. R. China
| | - Lei Cheng
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P. R. China
| | - Yaoge Liu
- Medical School of Shandong University, Jinan, Shandong 250012, P. R. China
| | - Linlin Guo
- Medical School of Shandong University, Jinan, Shandong 250012, P. R. China
| | - Yunpeng Zhao
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P. R. China
| | - Chao Liu
- Department of Oral and Maxillofacial Surgery and Institute of Dental Medicine, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P. R. China
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Zhang C, Fang X, Yao P, Mao Y, Cai J, Zhang Y, Chen M, Fan W, Tang W, Song L. Metabolic adverse effects of olanzapine on cognitive dysfunction: A possible relationship between BDNF and TNF-alpha. Psychoneuroendocrinology 2017; 81:138-143. [PMID: 28477447 DOI: 10.1016/j.psyneuen.2017.04.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 04/17/2017] [Accepted: 04/21/2017] [Indexed: 11/15/2022]
Abstract
OBJECTIVE There is accumulating evidence indicating that long-term treatment with second-generation antipsychotics (SGAs) results in metabolic syndrome (MetS) and cognitive impairment. This evidence suggests an intrinsic link between antipsychotic-induced MetS and cognitive dysfunction in schizophrenia patients. Olanzapine is a commonly prescribed SGA with a significantly higher MetS risk than that of most antipsychotics. In this study, we hypothesized that olanzapine-induced MetS may exacerbate cognitive dysfunction in patients with schizophrenia. METHODS A sample of 216 schizophrenia patients receiving long-term olanzapine monotherapy were divided into two groups, MetS and non-MetS, based on the diagnostic criteria of the National Cholesterol Education Program's Adult Treatment Panel III. We also recruited 72 healthy individuals for a control group. Cognitive function was evaluated using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). Plasma brain-derived neurotrophic factor (BDNF) and tumor necrosis factor-alpha (TNF-alpha) were measured by an enzyme-linked immunosorbent assay for 108 patients and 47 controls. RESULTS Among the 216 schizophrenia patients receiving olanzapine monotherapy, MetS was found in 95/216 (44%). Patients with MetS had more negative symptoms, higher total scores in PANSS (Ps<0.05) and lower immediate memory, attention, delayed memory and total scores in RBANS (Ps<0.01). Stepwise multivariate linear regression analysis revealed that increased glucose was the independent risk factor for cognitive dysfunction (t=-2.57, P=0.01). Patients with MetS had significantly lower BDNF (F=6.49, P=0.012) and higher TNF-alpha (F=5.08, P=0.026) levels than those without MetS. There was a negative correlation between the BDNF and TNF-alpha levels in the patients (r=-0.196, P=0.042). CONCLUSION Our findings provide evidence suggesting that the metabolic adverse effects of olanzapine may aggravate cognitive dysfunction in patients with schizophrenia through an interaction between BDNF and TNF-alpha.
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Affiliation(s)
- Chen Zhang
- Schizophrenia Program, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Xinyu Fang
- Schizophrenia Program, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peifen Yao
- Schizophrenia Program, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yemeng Mao
- Department of Pharmacology, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Cai
- Schizophrenia Program, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Zhang
- Schizophrenia Program, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Meijuan Chen
- Schizophrenia Program, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weixing Fan
- Department of Psychiatry, Jinhua Second Hospital, Jinhua, Zhejiang, China
| | - Wei Tang
- Department of Psychiatry, Wenzhou Kanging Hospital, Wenzhou, Zhejiang, China
| | - Lisheng Song
- Schizophrenia Program, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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