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Stevens NE, Loreti M, Ramirez-Sanchez I, Dos Reis FCG, Sacco A, Breen EC, Nogueira L. Cigarette smoke exposure impairs early-stage recovery from lengthening contraction-induced muscle injury in male mice. Physiol Rep 2024; 12:e70064. [PMID: 39328164 PMCID: PMC11427903 DOI: 10.14814/phy2.70064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 09/05/2024] [Accepted: 09/15/2024] [Indexed: 09/28/2024] Open
Abstract
The use of tobacco cigarettes produces locomotor muscle weakness and fatigue intolerance. Also, smokers and chronic obstructive pulmonary disease patients have a greater incidence of muscle injury and a deficient myogenic response. However, the effects of smoke exposure on the recovery from eccentric exercise-induced muscle injuries are unknown. Mice were exposed daily to cigarette smoke (CS) or room air (Air) for 4 months; the anterior crural muscles from one limb were injured by a lengthening contractions protocol (LCP) and recovered for 7 days. Lung compliance was greater, and body weights were lower, in CS-exposed than in the Air group. In LCP-subjected limbs, CS exposure lowered tibialis anterior myofiber cross-sectional area, decreased the size of centrally nucleated myofibers, and decreased extensor digitorum longus (EDL) mass, but did not affect EDL force from both limbs. CS exposure upregulated the mRNA levels of several myogenic (Pax7, Myf5, nNOS) genes in the EDL. The combination of CS exposure and LCP decreased Myf5 and nNOS mRNA levels and exacerbated pro-inflammatory mRNA levels. These data suggest that smoke exposure leads to an excessive pro-inflammatory response in regenerating muscle that is associated with a lower muscle mass recovery from a type of injury that often occurs during strenuous exercise.
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Affiliation(s)
- Nicole E Stevens
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Mafalda Loreti
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Israel Ramirez-Sanchez
- Division of Cardiovascular Medicine, Department of Medicine, University of California San Diego, La Jolla, California, USA
- Seccion de Estudios de Posgrado e Investigacion, Escuela Superior de Medicina, IPN, Mexico City, Mexico
| | - Felipe C G Dos Reis
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Alessandra Sacco
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Ellen C Breen
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Leonardo Nogueira
- School of Exercise and Nutritional Sciences, College of Health and Human Services, San Diego State University, San Diego, California, USA
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Slama N, Abdellatif A, Bahria K, Gasmi S, Khames M, Hadji A, Birkmayer G, Oumouna M, Amrani Y, Benachour K. NADH Intraperitoneal Injection Prevents Lung Inflammation in a BALB/C Mice Model of Cigarette Smoke-Induced Chronic Obstructive Pulmonary Disease. Cells 2024; 13:881. [PMID: 38786103 PMCID: PMC11120028 DOI: 10.3390/cells13100881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/04/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024] Open
Abstract
Cigarette smoke is one of the main factors in Chronic Obstructive Pulmonary Disease (COPD), a respiratory syndrome marked by persistent respiratory symptoms and increasing airway obstruction. Perturbed NAD+/NADH levels may play a role in various diseases, including lung disorders like COPD. In our study, we investigated the preventive effect of NADH supplementation in an experimental model of COPD induced by cigarette smoke extract (CSE). N = 64 mice randomly distributed in eight groups were injected with NADH (two doses of 100 mg/kg or 200 mg/kg) or dexamethasone (2 mg/kg) before being exposed to CSE for up to 9 weeks. Additionally, NADH supplementation preserved lung antioxidant defenses by preventing the functional loss of key enzymes such as superoxide dismutase (SOD), glutathione peroxidase (GPX), catalase, and the expression levels of glutathione (GSH) (n = 4, p < 0.001). It also reduced oxidative damage markers, such as malondialdehyde (MDA) and nitrites (n = 4, p < 0.001). A marked increase in tissue myeloperoxidase activity was assessed (MPO), confirming neutrophils implication in the inflammatory process. The latter was significantly ameliorated in the NADH-treated groups (p < 0.001). Finally, NADH prevented the CSE-induced secretion of cytokines such as Tumor Necrosis Factor alpha (TNF-α), IL-17, and IFN-y (n = 4, p < 0.001). Our study shows, for the first time, the clinical potential of NADH supplementation in preventing key features of COPD via its unique anti-inflammatory and antioxidant properties.
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Affiliation(s)
- Nada Slama
- Laboratory of Experimental Biology and Pharmacology, Faculty of Sciences, Dr. Yahia Fares University, Medea 26000, Algeria; (N.S.); (A.A.); (K.B.); (S.G.); (M.K.); (A.H.); (M.O.)
| | - Amina Abdellatif
- Laboratory of Experimental Biology and Pharmacology, Faculty of Sciences, Dr. Yahia Fares University, Medea 26000, Algeria; (N.S.); (A.A.); (K.B.); (S.G.); (M.K.); (A.H.); (M.O.)
| | - Karima Bahria
- Laboratory of Experimental Biology and Pharmacology, Faculty of Sciences, Dr. Yahia Fares University, Medea 26000, Algeria; (N.S.); (A.A.); (K.B.); (S.G.); (M.K.); (A.H.); (M.O.)
| | - Sara Gasmi
- Laboratory of Experimental Biology and Pharmacology, Faculty of Sciences, Dr. Yahia Fares University, Medea 26000, Algeria; (N.S.); (A.A.); (K.B.); (S.G.); (M.K.); (A.H.); (M.O.)
| | - Maamar Khames
- Laboratory of Experimental Biology and Pharmacology, Faculty of Sciences, Dr. Yahia Fares University, Medea 26000, Algeria; (N.S.); (A.A.); (K.B.); (S.G.); (M.K.); (A.H.); (M.O.)
| | - Abderrahmene Hadji
- Laboratory of Experimental Biology and Pharmacology, Faculty of Sciences, Dr. Yahia Fares University, Medea 26000, Algeria; (N.S.); (A.A.); (K.B.); (S.G.); (M.K.); (A.H.); (M.O.)
| | - George Birkmayer
- Department of Medical Chemistry, University of Graz, 8020 Graz, Austria
- Birkmayer Laboratories, 1090 Vienna, Austria
| | - Mustapha Oumouna
- Laboratory of Experimental Biology and Pharmacology, Faculty of Sciences, Dr. Yahia Fares University, Medea 26000, Algeria; (N.S.); (A.A.); (K.B.); (S.G.); (M.K.); (A.H.); (M.O.)
| | - Yassine Amrani
- Department of Respiratory Sciences, Institute of Lung Health and NIHR Leicester BRC-Respiratory, Glenfield Hospital, University of Leicester, Leicester LE1 7RH, UK;
| | - Karine Benachour
- Laboratory of Experimental Biology and Pharmacology, Faculty of Sciences, Dr. Yahia Fares University, Medea 26000, Algeria; (N.S.); (A.A.); (K.B.); (S.G.); (M.K.); (A.H.); (M.O.)
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Li H, Ma Y, Li T, Zeng Z, Luo L, Liu X, Li Y, Chen Y. CAPN5 attenuates cigarette smoke extract-induced apoptosis and inflammation in BEAS-2B cells. Tob Induc Dis 2024; 22:TID-22-65. [PMID: 38650847 PMCID: PMC11033979 DOI: 10.18332/tid/186183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 11/05/2023] [Accepted: 03/17/2024] [Indexed: 04/25/2024] Open
Abstract
INTRODUCTION Apoptosis and chronic inflammation are the main phenotypes in chronic obstructive pulmonary disease (COPD) pathogenesis. Cigarette smoke exposure is the leading risk factor for COPD, which causes aberrant airway epithelial structure and function. As a non-classical calpain, the molecular function of calpain5 (CAPN5) in COPD remains unclear. This study investigated the role of CAPN5 in mediating cigarette smoke extract (CSE)-induced apoptosis and inflammation. METHODS Immunohistochemistry (IHC) and Western blotting (WB) were performed to detect the location and expression of CAPN5. In vitro, BEAS-2B cells were transfected with CAPN5 siRNA or CAPN5 plasmid, followed by phosphate-buffered saline (PBS) or cigarette smoke extract (CSE) treatment. The protein expression levels of CAPN5, NF-κB p65, p-p65, IκBα, p-IκBα and apoptosis proteins (BCL-2, BAX) were measured by WB. Flow cytometry (FCM) was performed to analyze the cell apoptosis index. RESULTS CAPN5 was mainly expressed in the airway epithelium and significantly decreased in the COPD-smoker and emphysema-mouse groups. Silencing CAPN5 significantly decreased the protein expression of BCL-2, IκBα, and increased p-p65 and BAX protein expression. Additionally, an increased apoptosis index was detected after silencing CAPN5. Moreover, overexpression of CAPN5 partly inhibited IκBα degradation and p65 activation, and reduced CSE-induced inflammation and apoptosis. CONCLUSIONS These combined results indicate that CAPN5 could protect against CSE-induced apoptosis and inflammation, which may provide a potential therapeutic target for smoking-related COPD.
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Affiliation(s)
- Herui Li
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Diseases, Central South University, Changsha, China
- Clinical Medical Research Center for Respiratory and Critical Care Medicine in Hunan Province, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Yiming Ma
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Diseases, Central South University, Changsha, China
- Clinical Medical Research Center for Respiratory and Critical Care Medicine in Hunan Province, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Tiao Li
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Diseases, Central South University, Changsha, China
- Clinical Medical Research Center for Respiratory and Critical Care Medicine in Hunan Province, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Zihang Zeng
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Diseases, Central South University, Changsha, China
- Clinical Medical Research Center for Respiratory and Critical Care Medicine in Hunan Province, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Lijuan Luo
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Diseases, Central South University, Changsha, China
- Clinical Medical Research Center for Respiratory and Critical Care Medicine in Hunan Province, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Xiangming Liu
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Diseases, Central South University, Changsha, China
- Clinical Medical Research Center for Respiratory and Critical Care Medicine in Hunan Province, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Yi Li
- Department of Infectious Disease, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Diseases, Central South University, Changsha, China
- Clinical Medical Research Center for Respiratory and Critical Care Medicine in Hunan Province, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
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Luo L, Zeng Z, Li T, Liu X, Cui Y, Tao Y, Li Y, Chen Y. TET2 stabilized by deubiquitinase USP21 ameliorates cigarette smoke-induced apoptosis in airway epithelial cells. iScience 2024; 27:109252. [PMID: 38439981 PMCID: PMC10910280 DOI: 10.1016/j.isci.2024.109252] [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: 05/21/2023] [Revised: 12/29/2023] [Accepted: 02/13/2024] [Indexed: 03/06/2024] Open
Abstract
DNA demethylase TET2 was related with lung function. However, the precise role of TET2 in cigarette smoke (CS)-induced apoptosis of airway epithelium cells, and the mechanisms involved, have yet to be elucidated. Here, we showed that CS decreased TET2 protein levels but had no significant effect on its mRNA levels in lung tissues of chronic obstructive pulmonary disease (COPD) patients and CS-induced COPD mice model and even in airway epithelial cell lines. TET2 could inhibit CS-induced apoptosis of airway epithelial cell in vivo and in vitro. Moreover, we identified ubiquitin-specific protease 21 (USP21) as a deubiquitinase of TET2 in airway epithelial cells. USP21 interacted with TET2 and inhibited CSE-induced TET2 degradation. USP21 downregulated decreased TET2 abundance and further reduced the anti-apoptosis effect of TET2. Thus, we draw a conclusion that the USP21/TET2 axis is involved in CS-induced apoptosis of airway epithelial cells.
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Affiliation(s)
- Lijuan Luo
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Clinical Medical Research Center for Pulmonary and Critical Care Medicine in Hunan Province, Changsha, Hunan 410011, China
| | - Zihang Zeng
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Clinical Medical Research Center for Pulmonary and Critical Care Medicine in Hunan Province, Changsha, Hunan 410011, China
| | - Tiao Li
- Department of Pulmonary and Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Xiangming Liu
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Clinical Medical Research Center for Pulmonary and Critical Care Medicine in Hunan Province, Changsha, Hunan 410011, China
| | - Yanan Cui
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Clinical Medical Research Center for Pulmonary and Critical Care Medicine in Hunan Province, Changsha, Hunan 410011, China
| | - Yongguang Tao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, China
- NHC Key Laboratory of Carcinogenesis (Central South University), Cancer Research Institute and School of Basic Medicine, Central South University, Changsha, Hunan 410078, China
| | - Yi Li
- Department of Infectious Disease Department, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Diagnosis and Treatment center of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
- Clinical Medical Research Center for Pulmonary and Critical Care Medicine in Hunan Province, Changsha, Hunan 410011, China
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He X, Cui Y, Li T, Luo L, Zeng Z, Ma Y, Chen Y. PU.1 alleviates the inhibitory effects of cigarette smoke on endothelial progenitor cell function and lung-homing through Wnt/β-catenin and CXCL12/CXCR4 pathways. Tob Induc Dis 2024; 22:TID-22-27. [PMID: 38274000 PMCID: PMC10809061 DOI: 10.18332/tid/174661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 02/18/2023] [Accepted: 10/30/2023] [Indexed: 01/27/2024] Open
Abstract
INTRODUCTION Endothelial progenitor cells (EPCs) dysfunction is involved in the pathogenesis of chronic obstructive pulmonary disease (COPD). The transcription factor PU.1 is essential for the maintenance of stem/progenitor cell homeostasis. However, the role of PU.1 in COPD and its effects on EPC function and lung-homing, remain unclear. This study aimed to explore the protective activity of PU.1 and the underlying mechanisms in a cigarette smoke extract (CSE)-induced emphysema mouse model. METHODS C57BL/6 mice were treated with CSE to establish a murine emphysema model and injected with overexpressed PU.1 or negative control adeno-associated virus. Morphometry of lung slides, lung function, and apoptosis of lung tissues were evaluated. Immunofluorescence co-localization was used to analyze EPCs homing into the lung. Flow cytometry was performed to detect EPC count in lung tissues and bone marrow (BM). The angiogenic ability of BM-derived EPCs cultured in vitro was examined by tube formation assay. We determined the expression levels of PU.1, β-catenin, C-X-C motif ligand 12 (CXCL12), C-X-C motif receptor 4 (CXCR4), stem cell antigen-1 (Sca-1), and stemness genes. RESULTS CSE exposure significantly reduced the expression of PU.1 in mouse lung tissues, BM, and BM-derived EPCs. PU.1 overexpression attenuated CSE-induced emphysematous changes, lung function decline, and apoptosis. In emphysematous mice, PU.1 overexpression markedly reversed the decreased proportion of EPCs in BM and promoted the lung-homing of EPCs. The impaired angiogenic ability of BM-derived EPCs induced by CSE could be restored by the overexpression of PU.1. In addition, PU.1 upregulation evidently reversed the decreased expression of β-catenin, CXCL12, CXCR4, Scal-1, and stemness genes in mouse lung tissues, BM, and BM-derived EPCs after CSE exposure. CONCLUSIONS PU.1 alleviates the inhibitory effects of CSE on EPC function and lung-homing via activating the canonical Wnt/β-catenin pathway and CXCL12/CXCR4 axis. While further research is needed, our research may indicate a potential therapeutic target for COPD patients.
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Affiliation(s)
- Xue He
- Department of Thoracic Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Yanan Cui
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Tiao Li
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Lijuan Luo
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Zihang Zeng
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Yiming Ma
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
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Luo L, Li T, Zeng Z, Li H, He X, Chen Y. CSE reduces OTUD4 triggering lung epithelial cell apoptosis via PAI-1 degradation. Cell Death Dis 2023; 14:614. [PMID: 37726265 PMCID: PMC10509146 DOI: 10.1038/s41419-023-06131-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 09/21/2023]
Abstract
Ovarian tumor family deubiquitinase 4 (OTUD4), a member of the OTU deubiquitinating enzyme, is implicated to decrease in cancer to regulate cell apoptosis. However, the role of OTUD4 in cigarette smoke induced epithelial cell apoptosis and its mechanism have not been elucidated. In this study, we showed that OTUD4 protein reduced in CSE treated mice and airway epithelial cells. OTUD4 silence aggravated cell apoptosis and emphysematous change in the lung tissue of cigarette smoke extract (CSE) treated mice. Additionally, restoration of OTUD4 in the lung of mice alleviated CSE induced apoptosis and emphysematous morphology change. The effect of OTUD4 on cell apoptosis was also confirmed in vitro. Through protein profile screening, we identified that OTUD4 may interact with plasminogen activator inhibitor 1(PAI-1). We further confirmed that OTUD4 interacted with PAI-1 for de-ubiquitination and inhibiting CSE induced PAI-1 degradation. Furthermore, the protective role of OTUD4 in airway epithelial cells apoptosis was blocked by PAI-1 deactivation. Taken together, our data suggest that OTUD4 regulates cigarette smoke (CS)-triggered airway epithelial cell apoptosis via modulating PAI-1 degradation. Targeting OUTD4/PAI-1 signaling might potentially provide a therapeutic target against the lung cell apoptosis in cigarette smoke (CS)-induced emphysema.
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Affiliation(s)
- Lijuan Luo
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Tiao Li
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Zihang Zeng
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Herui Li
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Xue He
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Yan Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China.
- Research Unit of Respiratory Disease, Central South University, Changsha, China.
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China.
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Sul OJ, Choi HW, Oh J, Ra SW. GSPE attenuates CSE-induced lung inflammation and emphysema by regulating autophagy via the reactive oxygen species/TFEB signaling pathway. Food Chem Toxicol 2023; 177:113795. [PMID: 37116776 DOI: 10.1016/j.fct.2023.113795] [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: 02/05/2023] [Revised: 04/07/2023] [Accepted: 04/18/2023] [Indexed: 04/30/2023]
Abstract
Cigarette smoke can enhance reactive oxygen species (ROS) production in inflammatory and epithelial cells. Subsequently, ROS enhance autophagy-induced inflammation due to alveolar macrophages (AMs), the primary source of cytokines implicated in chronic obstructive pulmonary disease (COPD) pathogenesis. Therefore, we hypothesized that grape seed proanthocyanidin extract (GSPE), an effective antioxidant, could inhibit emphysema and airway inflammation by ameliorating cigarette smoke extract (CSE)-induced autophagy via suppressing oxidative stress in macrophages. We observed that GSPE significantly attenuated histological changes observed in CSE-induced emphysema and airway inflammation in the lungs of mice. Moreover, GSPE ameliorated lung inflammation by reducing the number of cells, macrophages, and neutrophils and the tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6 levels measured in bronchioloalveolar lavage fluid. ROS levels increased after CSE instillation and significantly decreased with in vitro GSPE treatment. GSPE decreased transcription factor EB (TFEB) oxidation by reducing ROS, inhibiting TFEB nuclear translocation. Furthermore, GSPE inhibited ROS-induced autophagy in RAW 264.7 cells, bone marrow-derived macrophages, and AMs. Inhibiting autophagy through GSPE treatment diminishes CSE-induced lung inflammation by inhibiting the NLRP3 inflammasome. This study demonstrates that GSPE can ameliorate CSE-induced inflammation and emphysema via autophagy-induced NLRP3 inflammasome regulation through the ROS/TFEB signaling pathway in a COPD mouse model.
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Affiliation(s)
- Ok Joo Sul
- Biomedical Research Center, Ulsan University Hospital, School of Medicine, University of Ulsan, Ulsan, 44033, Republic of Korea
| | - Hye Won Choi
- Biomedical Research Center, Ulsan University Hospital, School of Medicine, University of Ulsan, Ulsan, 44033, Republic of Korea
| | - Jimi Oh
- Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, 44033, Republic of Korea
| | - Seung Won Ra
- Department of Pulmonary and Critical Care Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, 44033, Republic of Korea.
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Henrot P, Dupin I, Schilfarth P, Esteves P, Blervaque L, Zysman M, Gouzi F, Hayot M, Pomiès P, Berger P. Main Pathogenic Mechanisms and Recent Advances in COPD Peripheral Skeletal Muscle Wasting. Int J Mol Sci 2023; 24:ijms24076454. [PMID: 37047427 PMCID: PMC10095391 DOI: 10.3390/ijms24076454] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/14/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a worldwide prevalent respiratory disease mainly caused by tobacco smoke exposure. COPD is now considered as a systemic disease with several comorbidities. Among them, skeletal muscle dysfunction affects around 20% of COPD patients and is associated with higher morbidity and mortality. Although the histological alterations are well characterized, including myofiber atrophy, a decreased proportion of slow-twitch myofibers, and a decreased capillarization and oxidative phosphorylation capacity, the molecular basis for muscle atrophy is complex and remains partly unknown. Major difficulties lie in patient heterogeneity, accessing patients' samples, and complex multifactorial process including extrinsic mechanisms, such as tobacco smoke or disuse, and intrinsic mechanisms, such as oxidative stress, hypoxia, or systemic inflammation. Muscle wasting is also a highly dynamic process whose investigation is hampered by the differential protein regulation according to the stage of atrophy. In this review, we report and discuss recent data regarding the molecular alterations in COPD leading to impaired muscle mass, including inflammation, hypoxia and hypercapnia, mitochondrial dysfunction, diverse metabolic changes such as oxidative and nitrosative stress and genetic and epigenetic modifications, all leading to an impaired anabolic/catabolic balance in the myocyte. We recapitulate data concerning skeletal muscle dysfunction obtained in the different rodent models of COPD. Finally, we propose several pathways that should be investigated in COPD skeletal muscle dysfunction in the future.
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Affiliation(s)
- Pauline Henrot
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
- CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, CIC 1401, Service de Pneumologie, F-33604 Pessac, France
| | - Isabelle Dupin
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
| | - Pierre Schilfarth
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
- CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, CIC 1401, Service de Pneumologie, F-33604 Pessac, France
| | - Pauline Esteves
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
| | - Léo Blervaque
- PhyMedExp, INSERM-CNRS-Montpellier University, F-34090 Montpellier, France
| | - Maéva Zysman
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
- CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, CIC 1401, Service de Pneumologie, F-33604 Pessac, France
| | - Fares Gouzi
- PhyMedExp, INSERM-CNRS-Montpellier University, CHRU Montpellier, F-34090 Montpellier, France
| | - Maurice Hayot
- PhyMedExp, INSERM-CNRS-Montpellier University, CHRU Montpellier, F-34090 Montpellier, France
| | - Pascal Pomiès
- PhyMedExp, INSERM-CNRS-Montpellier University, F-34090 Montpellier, France
| | - Patrick Berger
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
- CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, CIC 1401, Service de Pneumologie, F-33604 Pessac, France
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9
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Deng M, Tong R, Bian Y, Hou G. Astaxanthin attenuates cigarette smoking-induced oxidative stress and inflammation in a sirtuin 1-dependent manner. Biomed Pharmacother 2023; 159:114230. [PMID: 36696799 DOI: 10.1016/j.biopha.2023.114230] [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: 11/06/2022] [Revised: 12/22/2022] [Accepted: 01/08/2023] [Indexed: 01/25/2023] Open
Abstract
Oxidative stress and chronic inflammation play key roles in the pathogenesis of chronic obstructive pulmonary disease (COPD). Astaxanthin (AXT) is a keto-carotenoid with a variety of biological functions, including antioxidant and anti-inflammatory effects This study aimed to explore the protective role and underlying mechanism of AXT in the pathogenesis of COPD. In this study, we found AXT alleviated pulmonary emphysema in a CS-exposed mouse model and regulated the expression of MMP-9/TIMP-1. And, AXT attenuates CSE-induced small airway fibrosis. Meanwhile, AXT inhibited Nrf2-modulated oxidative stress and the p65 NF-κB-regulated inflammatory pathway in both the mouse model and CSE-treated HBE cells. Mechanistically, AXT could directly bind to SIRT1 (the binding energy of the complex was -8.8 kcal/mol) and regulate the deacetylation activity of SIRT1. Finally, by activating SIRT1 deacetylation, AXT deacetylated Nrf2 and contributed to its action of reducing oxidative stress by generating antioxidant enzymes, and inhibiting p65 NF-κB transcriptional activity to suppress the inflammatory response. Our results show that treatment with AXT significantly reverses the oxidative stress and inflammation induced by cigarette smoke both in vivo and in vitro in a sirtuin 1-dependent manner.
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Affiliation(s)
- Mingming Deng
- National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital. No.2, East Yinghua Road, Chaoyang District, Beijing 100029, China
| | - Run Tong
- National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital. No.2, East Yinghua Road, Chaoyang District, Beijing 100029, China
| | - Yiding Bian
- National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital. No.2, East Yinghua Road, Chaoyang District, Beijing 100029, China
| | - Gang Hou
- National Center for Respiratory Medicine; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital. No.2, East Yinghua Road, Chaoyang District, Beijing 100029, China..
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10
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Dai Z, Liu X, Zeng H, Chen Y. Long noncoding RNA HOTAIR facilitates pulmonary vascular endothelial cell apoptosis via DNMT1 mediated hypermethylation of Bcl-2 promoter in COPD. Respir Res 2022; 23:356. [PMID: 36527094 PMCID: PMC9758792 DOI: 10.1186/s12931-022-02234-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 11/01/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND To study the regulatory effect of Long non-coding RNA (LncRNA) HOX transcript antisense RNA (HOTAIR) on pulmonary vascular endothelial cell (HPVEC) apoptosis and determine whether the HOTAIR facilitate HPVEC apoptosis via DNMT1 mediated hypermethylation of Bcl-2 promoter in chronic obstructive pulmonary disease (COPD). METHODS LncRNA array was used to measure the differentially expressed lncRNAs in COPD and non-COPD lung tissues. Expression of HOTAIR in COPD patient lungs and cigarette smoke extract (CSE)-induced HPVEC was assessed by qRT-PCR. The location of HOTAIR was determined in COPD patient lungs and HPVEC by RNA in situ hybridization (RNA-ISH). The emphysema mouse model and HOTAIR knockdown mice were each established by inhaling cigarette smoke or intratracheal lentiviral vectors instillation. The dysregulation of DNA methyltransferase enzyme 1 (DNMT1), B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X protein (Bax) and Cleaved-caspase 3 protein expression were detected by Western blotting. HOTAIR, DNMT1, Bcl-2 and Bax mRNA expression were measured by quantitative real-time polymerase chain reaction. TUNEL (terminal deoxynucleotidyl transferase dUTP nick end labeling) assays were used to assess apoptotic ratio in mice and CSE-induced HPVEC. Methylation-specific PCR (MSP) assay was conducted to observe the alterations in the methylation of the Bcl-2 promoter in specimens. RNA pull-down assay was used for analysis of the correlation between HOTAIR and DNMT1. RESULTS The expression levels of the HOTAIR were up-regulated in COPD patient lungs and CSE-induced HPVEC. HPVEC apoptosis with down-regulated Bcl-2 expression, increased promoter methylation, DNMT1, Bax and Cleaved-caspase 3 expression was found in emphysema mouse model and CSE-induced HPVEC. Knockdown HOTAIR can attenuate cell apoptosis and emphysema via DNMT1 mediated hypermethylation of Bcl-2 promoter in mice. In vitro, HOTAIR can aggravate the apoptosis of CSE-exposed HPVEC. DNMT1 was a target of HOTAIR and had a positive correlation with HOTAIR. CONCLUSION HOTAIR facilitates HPVEC apoptosis via DNMT1 mediated hypermethylation of Bcl-2 promoter in COPD, and attenuating the expression of HOTAIR may be a new therapy to prevent COPD.
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Affiliation(s)
- Zhongshang Dai
- Second Xiangya Hospital of Central South University, Changsha, China
| | - Xiangming Liu
- Second Xiangya Hospital of Central South University, Changsha, China
| | - Huihui Zeng
- Second Xiangya Hospital of Central South University, Changsha, China.
| | - Yan Chen
- Second Xiangya Hospital of Central South University, Changsha, China.
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11
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Liang G, He Z, Chen Y, Zhang H, Peng H, Zong D, Long Y. Existence of multiple organ aging in animal model of
emphysema induced by cigarette smoke extract. Tob Induc Dis 2022; 20:02. [PMID: 35087358 PMCID: PMC8763140 DOI: 10.18332/tid/143853] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/26/2021] [Accepted: 11/10/2021] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION It is commonly considered that COPD or at least emphysema represents accelerated lung aging induced in part by oxidative damage from cigarette smoke components. However, the issue if there are any aging signs in other organs in patients with COPD or emphysema remains unclear. The aim of this study is to explore whether there is multiple organ aging in the animal model of emphysema induced by cigarette smoke extract (CSE), and to ascertain the possible mechanisms, if any. METHODS The animal model of emphysema was induced by CSE. Histomorphological changes in lung, heart, liver, kidney and spleen tissues were measured after staining with hematoxylin and eosin (H&E). The concentrations of stem cell factor (SCF), CyclinD1 and superoxide dismutase (SOD) in serum were determined by ELISA kit. The expressions of p16 (INK4a), Sca-1, eNOS proteins and mRNA in lung, heart, liver, kidney and spleen tissues were detected by Western blotting and quantitative reverse transcriptase polymerase chain reaction (qRT-PCR), respectively. Decitabine (Dec) was applied to examine whether it could alter the changes caused by CSE. RESULTS The histomorphology of lung tissue was significantly changed, while other organs exhibited normal structure and histomorphology. The concentrations of SCF, CyclinD1 and SOD in serum were lower in the CSE group than in the control group. The expression levels of p16(INK4a) protein and mRNA in lung, heart, liver, kidney and spleen tissues were higher in the CSE group than in the control group, while the expression levels of Sca-1 and eNOS proteins and mRNA were lower in the CSE group than in the control group, in the tissues described above. Dec could partly alleviate the damages caused by CSE and the degree of alleviation resulted by Dec varied from organ to organ. CONCLUSIONS In addition to the aging of the lung tissue in the emphysema animal model induced by CSE, the tissues of the heart, liver, kidney and spleen were also in the progress of aging, but the sensibility and affinity of lung to CSE were higher than those of the other organs. Multiple organ aging may also exist in the animal model of emphysema induced by CSE. DEC can partly alleviate the multiple organ aging caused by CSE.
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Affiliation(s)
- Guibin Liang
- Department of Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhihui He
- Department of Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hongbo Zhang
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Huaihuai Peng
- Department of Intensive Care Unit, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Dandan Zong
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yingjiao Long
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
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12
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Luan G, Zhu Z, Wu K, Yin S. Theaflavin-3,3'-digallate attenuates cigarette smoke extract-induced pulmonary emphysema in mice by suppressing necroptosis. Exp Ther Med 2021; 23:11. [PMID: 34815763 PMCID: PMC8593858 DOI: 10.3892/etm.2021.10933] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 10/05/2021] [Indexed: 12/13/2022] Open
Abstract
Pulmonary emphysema is one of the most important pathological manifestations of chronic obstructive pulmonary disease and is commonly associated with cigarette smoking. Previous studies have indicated that necroptosis, a novel non-apoptotic cell death mechanism associated with inflammation and oxidative stress, may contribute to the development of pulmonary emphysema. Theaflavin-3,3'-digallate (TF-3), one of the theaflavins present in black tea, is known to possess several bioactive properties. In the present study, it was demonstrated that TF-3 significantly reduced the generation of reactive oxygen species and the mRNA expression levels of TNF-α, IL-1β and IL-6 in CSE-treated human normal lung epithelial BEAS-2B cells. To further explore the role of TF-3 in necroptosis, the necroptotic rates of BEAS-2B cells were examined via flow cytometry and immunofluorescence assays. The results demonstrated that TF-3 may suppress necroptosis in CSE-treated BEAS-2B cells. Furthermore, it was determined that TF-3 significantly inhibited the CSE-induced phosphorylation of p38 MAPK, receptor-interacting serine/threonine-protein kinase three (RIPK3) and mixed lineage kinase domain-like (MLKL) in BEAS-2B cells. Another experiment demonstrated that a pharmacological inhibitor of the p38 MAPK pathway, SB203580, significantly reduced the protein expression levels of phosphorylated (p)-RIPK3 and phosphorylated (p-)MLKL, which indicated that TF-3 suppressed necroptosis via the p38 MAPK/RIPK3/MLKL signaling pathways. In vivo, it was observed that TF-3 treatment significantly attenuated morphological lung injury in mice with CSE-induced emphysema. Moreover, TF-3 significantly reduced the levels of proinflammatory cytokines, TNF-α and IL-1β and significantly enhanced the antioxidant capacity of the lung tissues in mice with emphysema. TF-3 also significantly inhibited the levels of p-RIPK3 and p-MLKL in the lungs of mice with emphysema. Therefore, the present study indicated that TF-3 may attenuate CSE-induced emphysema in mice by inhibiting necroptosis.
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Affiliation(s)
- Guangxin Luan
- National Demonstration Center for Experimental Fisheries Science Education, Affiliated Shanghai Ocean University, Shanghai 201306, P.R. China.,Department of Respiratory Medicine, Affiliated Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Zhen Zhu
- Department of Respiratory Medicine, Affiliated Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Kaiyue Wu
- National Demonstration Center for Experimental Fisheries Science Education, Affiliated Shanghai Ocean University, Shanghai 201306, P.R. China
| | - Shaojun Yin
- Department of Respiratory Medicine, Affiliated Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P.R. China
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13
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Wan M, Yao YF, Wu W, Fu WW, Wu RT, Li WJ. Chimonanthus nitens Oliv. essential oil mitigates lipopolysaccharide-induced acute lung injury in rats. Food Chem Toxicol 2021; 156:112445. [PMID: 34332013 DOI: 10.1016/j.fct.2021.112445] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/07/2021] [Accepted: 07/27/2021] [Indexed: 01/31/2023]
Abstract
This study aimed to evaluate the effect of Chimonanthus nitens Oliv. essential oil (named CEO) on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in rats. In the present study, 21 compounds were characterized in CEO by gas chromatography-mass spectrometry analysis. Furthermore, animal data suggested that CEO could protect rats against ALI, as evidence by increasing white blood cell count, reducing immune organ index and improving lung histopathological changes in rats subjected to LPS. Reduction of the levels of IL-1β was also shown during CEO-triggering lung protection in rats. Meanwhile, these protective effects of CEO were accompanied by the attenuation of lipid oxidation, and elevation of antioxidant enzymes, suggesting that enhancement of antioxidant defense was linked to its lung protection. Moreover, a combination with CEO and LPS significantly elevated short-chain fatty acids (SCFAs) compared with LPS alone via increasing propionic, i-butyric, butyric and i-valeric acid on LPS-induced ALI in rats. Therefore, our findings indicated that CEO could alleviate LPS-caused ALI in rats by controlling aberrant inflammation, correcting the redox system, and modulating SCFAs in rats.
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Affiliation(s)
- Min Wan
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, 330047, China
| | - Yu-Fei Yao
- Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, 330006, China
| | - Wei Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, 330047, China
| | - Wang-Wei Fu
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, 330047, China
| | - Rui-Ting Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, 330047, China
| | - Wen-Juan Li
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, 330047, China.
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14
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Zeng H, Kong X, Zhang H, Chen Y, Cai S, Luo H, Chen P. Inhibiting DNA methylation alleviates cigarette smoke extract-induced dysregulation of Bcl-2 and endothelial apoptosis. Tob Induc Dis 2020; 18:51. [PMID: 32547354 PMCID: PMC7291961 DOI: 10.18332/tid/119163] [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: 10/26/2019] [Revised: 02/05/2020] [Accepted: 03/17/2020] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION There is evidence that cigarette smoking participates in disease progression through endothelial apoptosis. Bcl-2 family proteins are essential and critical regulators of apoptosis. We explored whether Bcl-2 plays a role in cigarette smoke extract induced (CSE-induced) endothelial apoptosis. Furthermore, given the involvement of epigenetics in apoptosis and Bcl-2 expression, we hypothesized that CSE-induced apoptosis might be caused by gene methylation. METHODS Human umbilical vascular endothelial cells (HUVECs) were treated with CSE, CSE plus 5-aza-2'-deoxycytidine (AZA, an inhibitor of DNA methylation), or AZA and phosphate-buffered saline (PBS). Endothelial apoptosis was determined by Annexin-V and propidium iodide staining. The expression levels of Bcl-2, Bax, and cytochrome C (cyt C) were assessed by immunoblotting and RT-PCR. The methylation status of the Bcl-2 promoter was observed by bisulfite sequencing PCR (BSP). RESULTS The apoptotic index of endothelial cells in the CSE-treated group increased. Decreased expression of Bcl-2 and high methylation of the Bcl-2 promoter were observed after CSE treatment. AZA alleviated the endothelial apoptosis caused by CSE. AZA treatment also increased Bcl-2 expression along with decreased Bcl-2 promoter methylation. CONCLUSIONS Inhibiting DNA methylation alleviates CSE-induced endothelial apoptosis and Bcl-2 promoter methylation. Bcl-2 promoter methylation might be involved in CES-induced endothelial apoptosis.
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Affiliation(s)
- Huihui Zeng
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,Research Unit of Respiratory Diseases, Central South University, Changsha, China.,Hunan Centre for Evidence-based Medicine, Changsha, China
| | - Xianglong Kong
- Department of Respiratory Medicine, The First Hospital of Changsha, Changsha, China
| | - Hongliang Zhang
- Department of Emergency Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,Research Unit of Respiratory Diseases, Central South University, Changsha, China.,Hunan Centre for Evidence-based Medicine, Changsha, China
| | - Shan Cai
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,Research Unit of Respiratory Diseases, Central South University, Changsha, China.,Hunan Centre for Evidence-based Medicine, Changsha, China
| | - Hong Luo
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,Research Unit of Respiratory Diseases, Central South University, Changsha, China.,Hunan Centre for Evidence-based Medicine, Changsha, China
| | - Ping Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,Research Unit of Respiratory Diseases, Central South University, Changsha, China.,Hunan Centre for Evidence-based Medicine, Changsha, China
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15
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He X, Li T, Luo L, Zeng H, Chen Y, Cai S. PRMT6 mediates inflammation via activation of the NF-κB/p65 pathway on a cigarette smoke extract-induced murine emphysema model. Tob Induc Dis 2020; 18:8. [PMID: 32047419 PMCID: PMC7008391 DOI: 10.18332/tid/116413] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/30/2019] [Accepted: 01/09/2020] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION Smoke-driven lung inflammation is considered to be the major pathophysiology mechanism of Chronic Obstructive Pulmonary Disease (COPD)/emphysema. Protein arginine methyltransferase 6 (PRMT6) is a key epigenetic enzyme, which is related to protecting the tri-methylation of H3K4 (H3K4me3). We hypothesized that PTMT6 protects lung inflammation through the nuclear factor kappa B (NF-κB) pathway. METHODS Mice were injected with cigarette smoke extract (CSE) or PBS to establish a mice model, intratracheally instilled with overexpressed PRMT6 or negative control vector. Morphometry of lung slides and lung function were measured. We determined the protein expression of PRMT6 and its related histone targets, the activation of NF-κB pathway, the level of tumor necrosis factor α (TNFα) and interleukin-1β (IL-1β). RESULTS After PRMT6 overexpression, the morphometry indexes and lung function were improved. Also, the expression of H3K4me3 was decreased. Overexpressed PRMT6 could suppress CSE-induced NF-κB activation and pro-inflammation genes expression. CONCLUSIONS The overexpressed PRMT6 could serve as an inflammation inhibitor, potentially through blocking the NF-κB/p65 pathway in the murine emphysema model.
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Affiliation(s)
- Xue He
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Tiao Li
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Lijuan Luo
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Huihui Zeng
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
| | - Shan Cai
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
- Research Unit of Respiratory Disease, Central South University, Changsha, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, China
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16
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Cheng W, Li X, Duan J, Zhou Z, Zhou A, Zhao Y, Zeng Y, Chen Y, Cai S, Chen P. Prevalence and Characteristics of Pain in Patients of Chronic Obstructive Pulmonary Disease: A Cross-Sectional Study in China. COPD 2020; 17:90-100. [PMID: 31948299 DOI: 10.1080/15412555.2020.1713076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The purposes of this study were to: (1) study the prevalence of pain in patients with mild-to-very severe chronic obstructive pulmonary disease (COPD) in China; (2) compare the differences in pain characteristics between stable COPD and acute exacerbation of COPD (AECOPD); (3) explore the clinical associations with pain in those with COPD. This cross-sectional study was conducted in China from October 24, 2017, to January 11, 2019. A face-to-face interview was conducted to collect data. The Chinese version of the brief pain inventory (BPI-C) was applied to investigate the pain characteristics in patients with COPD. Of the 901 patients in this study, 226 (25.1%) patients reported pain problems. The prevalence of pain in patients with mild to very severe COPD was 32.9%, 23.9%, 25.2%, and 23.5%, respectively (p = 0.447). According to the BPI-C results, 31.3% (31/99) of patients reported pain of AECOPD, compared to 24.3% (195/802) of stable COPD (p = 0.13). Reported pain intensity and pain interference evaluated by the BPI-C were significantly higher in AECOPD than stable COPD (p < 0.001, p < 0.05, respectively). Those with body mass index (BMI) ≥ 24kg/m2 or COPD assessment test (CAT) score > 20 were significantly more likely to have pain problems than BMI < 24kg/m2 (aOR = 1.568, a95IC = 1.132-2.170, p = 0.007) or CAT ≤ 20 (aOR= 1.754, a95IC = 1.213-2.536, p = 0.003). Pain was common in patients with both stable COPD and AECOPD. AECOPD patients had a significantly higher pain intensity than stable COPD. Overweight and CAT > 20 were significantly related to higher prevalence of pain.
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Affiliation(s)
- Wei Cheng
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Xiaoyun Li
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Jiaxi Duan
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Zijing Zhou
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Aiyuan Zhou
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Yiyang Zhao
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Yuqin Zeng
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Yan Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Shan Cai
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Ping Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital; Research Unit of Respiratory Disease; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
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Chen L, Luo L, Kang N, He X, Li T, Chen Y. The Protective Effect of HBO1 on Cigarette Smoke Extract-Induced Apoptosis in Airway Epithelial Cells. Int J Chron Obstruct Pulmon Dis 2020; 15:15-24. [PMID: 32021140 PMCID: PMC6954103 DOI: 10.2147/copd.s234634] [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: 10/14/2019] [Accepted: 12/10/2019] [Indexed: 12/13/2022] Open
Abstract
Purpose Epigenetic modification is one of most important mechanisms underlying the pathogenesis of chronic obstructive pulmonary disease (COPD). The purpose of this study was to determine whether histone acetyltransferase binding to ORC1 (HBO1) can protect against cigarette smoke (CS)-induced cell apoptosis and sustain normal histone acetylation in COPD. Methods Human lung tissue samples were obtained from patients who underwent lung resection. The emphysema mouse model and HBO1 overexpressing mice were each established by intraperitoneal injection with cigarette smoke extract (CSE) or intratracheal lentiviral vectors instillation. TUNEL (terminal deoxynucleotidyl transferase dUTP nick end labeling) assays were used to assess apoptotic ratio in mice. The apoptosis of human bronchial epithelial cells (HBECs) was assayed by flow cytometry. HBO1, B-cell lymphoma-2 (BCL-2), and H3K14ac protein expression were detected by Western blotting. HBO1 mRNA expression was measured by quantitative real-time polymerase chain reaction. Results Protein expression of HBO1 was decreased significantly in lung tissue from COPD patients and CSE-treated emphysema mouse models. Overexpression of HBO1 attenuated CSE-induced emphysematous changes, as well as apoptosis in the lungs of COPD mice. In vitro, the HBO1 protein degraded in a time- and dose-dependent course with CSE treatment. With flow cytometry, we proved that HBO1 could reverse the apoptosis of HBECs induced by CSE. Furthermore, HBO1 overexpression promoted the expression of anti-apoptotic BCL-2 protein and enhanced H3K14 acetylation in airway epithelial cells. Conclusion These findings demonstrate that the key histone modulator HBO1 plays a protective role in COPD pathogenesis that may shed light on potential therapeutic targets to inhibit the progress of COPD.
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Affiliation(s)
- Lin Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, People's Republic of China.,Research Unit of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China
| | - Lijuan Luo
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, People's Republic of China.,Research Unit of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China
| | - Naixin Kang
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, People's Republic of China.,Research Unit of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China
| | - Xue He
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, People's Republic of China.,Research Unit of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China
| | - Tiao Li
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, People's Republic of China.,Research Unit of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, People's Republic of China.,Research Unit of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha 410011, Hunan, People's Republic of China
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18
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Abstract
OBJECTIVE Chronic obstructive pulmonary disease (COPD) is a common chronic respiratory disease of human beings characterized by not fully reversible airflow limitation. Emphysema is the main pathological feature of COPD which causes high mortality worldwide every year and consumes a large amount of medical expenses. This paper was to review the establishment and evaluation methods of animal models of emphysema or COPD, and put forward some new ideas on animal selection, method of modeling, and model evaluation. DATA SOURCES The author retrieved information from the PubMed database up to July 2019, using various combinations of search terms, including emphysema, model, and animal. STUDY SELECTION Original articles, reviews, and other articles were searched and reviewed for animal models of emphysema. RESULTS This review summarized animal models of emphysema from the perspectives of animal selection, emphysema mechanism, modeling method and model evaluation, and found that passive smoking is the classic method for developing animal model of emphysema, mice are more suitable for experimental study on emphysema. Compared with pulmonary function indicators, airway inflammation indicators and oxidative stress indicators, pathomorphological indicators of lung tissue are the most important parameters for evaluating the establishment of the animal model of emphysema. CONCLUSIONS Mice model induced by passive smoking is the classic animal model of emphysema. Pathomorphological indicators are the most important parameters for evaluating the establishment of the animal model of emphysema.
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Affiliation(s)
- Gui-Bin Liang
- Department of Intensive Care Unit, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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19
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Wang W, Zha G, Zou JJ, Wang X, Li CN, Wu XJ. Berberine Attenuates Cigarette Smoke Extract-induced Airway Inflammation in Mice: Involvement of TGF-β1/Smads Signaling Pathway. Curr Med Sci 2019; 39:748-753. [PMID: 31612392 DOI: 10.1007/s11596-019-2101-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 09/02/2019] [Indexed: 02/06/2023]
Abstract
Although several studies confirmed that berberine may attenuate airway inflammation in mice with chronic obstructive pulmonary disease (COPD), its underlying mechanisms were not clear until now. We aimed to establish an experiment mouse model for COPD and to investigate the effects of berberine on airway inflammation and its possible mechanism in COPD model mice induced by cigarette smoke extract (CSE). Twenty SPF C57BL/6 mice were randomly divided into PBS control group, COPD model group, low-dose berberine group and high-dose berberine group, 5 mice in each group. The neutrophils and macrophages were examined by Wright's staining. The levels of inflammatory cytokines TNF-α and IL-6 in bronchoalveolar lavage fluid (BALF) were determined by enzyme-linked immunosorbent assay. The expression levels of TGF-β1, Smad2 and Smad3 mRNA and proteins in lung tissues were respectively detected by quantitative real-time polymerase chain reaction and Western blotting. It was found that CSE increased the number of inflammation cells in BALF, elevated lung inflammation scores, and enhanced the TGF-β1/Smads signaling activity in mice. High-dose berberine restrained the alterations in the COPD mice induced by CSE. It was concluded that high-dose berberine ameliorated CSE-induced airway inflammation in COPD mice. TGF-β1/Smads signaling pathway might be involved in the mechanism. These findings suggested a therapeutic potential of high-dose berberine on the CSE-induced airway inflammation.
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Affiliation(s)
- Wen Wang
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Gan Zha
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jin-Jing Zou
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Xun Wang
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Chun-Nian Li
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Xiao-Jun Wu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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20
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Dhapare S, Li H, Sakagami M. Salvianolic acid B as an anti-emphysema agent II: In vivo reversal activities in two rat models of emphysema. Pulm Pharmacol Ther 2018; 53:52-60. [PMID: 30193865 DOI: 10.1016/j.pupt.2018.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/03/2018] [Accepted: 09/03/2018] [Indexed: 11/18/2022]
Abstract
Emphysema progressively destroys alveolar structures, leading to disability and death, yet remains irreversible and incurable to date. Impaired vascular endothelial growth factor (VEGF) signaling is an emerging pathogenic mechanism, thereby proposing a hypothesis that VEGF stimulation/elevation enables recovery from alveolar structural destruction and loss of emphysema. Our previous in vitro study identified that salvianolic acid B (Sal-B), a polyphenol of traditional Chinese herbal danshen, stimulated lung cell proliferation and migration, and protected against induced lung cell death, by virtue of signal transducer and activator of transcription 3 (STAT3) activation and VEGF stimulation/elevation. Thus, this study examined Sal-B for in vivo therapeutic reversal of established emphysema in two rat models. Emphysema was induced with porcine pancreatic elastase (PPE) and cigarette smoke extract (CSE), and established by day 21. Sal-B was then spray-dosed to the lung three times weekly for three weeks. Functional treadmill exercise endurance; morphological airspace enlargement and alveolar destruction; apoptosis, cell proliferation and tissue matrix proteins; phosphorylated STAT3 (pSTAT3) and VEGF expressions; neutrophil accumulation; and lipid peroxidation were determined. In both models, Sal-B at 0.2 mg/kg significantly reversed impaired exercise endurance by 80 and 64%; airspace enlargement [mean linear intercept (MLI)] by 56 and 67%; and alveolar destructive index (%DI) by 63 and 66%, respectively. Induced apoptosis activity [cleaved caspase-3] was normalized by 94 and 82%; and cell proliferation activity [proliferative cell nuclear antigen (PCNA)] was stimulated by 1.6 and 2.1-fold. In the PPE-induced model, Sal-B reduced induction of lung's matrix metalloproteinase (MMP)-9 and MMP-2 activities by 59 and 94%, respectively, and restored pSTAT3 and VEGF expressions to the healthy lung levels, while leaving neutrophil accumulation unchecked [myeloperoxidase (MPO) activity]. In the CSE-induced model, Sal-B elevated pSTAT3 and VEGF expressions both by 1.8-fold over the healthy lung levels, and normalized induced lipid peroxidation [malondialdehyde (MDA) activity] by 68%. These results provide an in vivo proof-of-concept for Sal-B as one of the first anti-emphysema agents enabling reversal of alveolar structural destruction and loss via local lung treatment by virtue of its STAT3 activation and VEGF stimulation.
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Affiliation(s)
- Sneha Dhapare
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, 410 N. 12th Street, P. O. Box 980533, Richmond, VA, 23298, USA.
| | - Hua Li
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, 410 N. 12th Street, P. O. Box 980533, Richmond, VA, 23298, USA.
| | - Masahiro Sakagami
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, 410 N. 12th Street, P. O. Box 980533, Richmond, VA, 23298, USA.
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21
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Nogueira L, Trisko BM, Lima‐Rosa FL, Jackson J, Lund‐Palau H, Yamaguchi M, Breen EC. Cigarette smoke directly impairs skeletal muscle function through capillary regression and altered myofibre calcium kinetics in mice. J Physiol 2018; 596:2901-2916. [PMID: 29797443 PMCID: PMC6046067 DOI: 10.1113/jp275888] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/18/2018] [Indexed: 12/21/2022] Open
Abstract
KEY POINTS Cigarette smoke components directly alter muscle fatigue resistance and intracellular muscle fibre Ca2+ handling independent of a change in lung structure. Changes in muscle vascular structure are associated with a depletion of satellite cells. Sarcoplasmic reticulum Ca2+ uptake is substantially impaired in myofibres during fatiguing contractions in mice treated with cigarette smoke extract. ABSTRACT Cigarette smokers exhibit exercise intolerance before a decline in respiratory function. In the present study, the direct effects of cigarette smoke on limb muscle function were tested by comparing cigarette smoke delivered to mice by weekly injections of cigarette smoke extract (CSE), or nose-only exposure (CS) 5 days each week, for 8 weeks. Cigarette smoke delivered by either route did not alter pulmonary airspace size. Muscle fatigue measured in situ was 50% lower in the CSE and CS groups than in control. This was accompanied by 34% and 22% decreases in soleus capillary-to-fibre ratio of the CSE and CS groups, respectively, and a trend for fewer skeletal muscle actin-positive arterioles (P = 0.07). In addition, fewer quiescent satellite cells (Nes+Pax7+) were associated with soleus fibres in mice with skeletal myofibre VEGF gene deletion (decreased 47%) and CS exposed (decreased 73%) than with control fibres. Contractile properties of isolated extensor digitorum longus and soleus muscles were impaired. In flexor digitorum brevis myofibres isolated from CSE mice, fatigue resistance was diminished by 43% compared to control and CS myofibres, and this was accompanied by a pronounced slowing in relaxation, an increase in intracellular Ca2+ accumulation, and a slowing in sarcoplasmic reticulum Ca2+ uptake. These data suggest that cigarette smoke components may impair hindlimb muscle vascular structure, fatigue resistance and myofibre calcium handling, and these changes ultimately affect contractile efficiency of locomotor muscles independent of a change in lung function.
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Affiliation(s)
- Leonardo Nogueira
- Department of MedicineUniversity of California, San DiegoLa JollaCAUSA
- Instituto de Bioquímica Médica Leopoldo de Meis (IBqM‐LDM)Universidade Federal do Rio de JaneiroRio de JaneiroRJBrazil
| | - Breanna M. Trisko
- Department of MedicineUniversity of California, San DiegoLa JollaCAUSA
| | - Frederico L. Lima‐Rosa
- Instituto de Bioquímica Médica Leopoldo de Meis (IBqM‐LDM)Universidade Federal do Rio de JaneiroRio de JaneiroRJBrazil
| | - Jason Jackson
- Department of MedicineUniversity of California, San DiegoLa JollaCAUSA
| | - Helena Lund‐Palau
- Department of MedicineUniversity of California, San DiegoLa JollaCAUSA
| | - Masahiro Yamaguchi
- Department of Physiology, Kochi Medical SchoolKochi UniversityKochiJapan
| | - Ellen C. Breen
- Department of MedicineUniversity of California, San DiegoLa JollaCAUSA
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22
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Li A, Liu Y, Zhu X, Sun X, Feng X, Li D, Zhang J, Zhu M, Zhao Z. Methylallyl sulfone attenuates inflammation, oxidative stress and lung injury induced by cigarette smoke extract in mice and RAW264.7 cells. Int Immunopharmacol 2018; 59:369-374. [PMID: 29689496 DOI: 10.1016/j.intimp.2018.04.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/28/2018] [Accepted: 04/13/2018] [Indexed: 12/28/2022]
Abstract
In this study, we revealed that methylallyl sulfone (AMSO2), the metabolite of active organosulfur compounds, had anti-inflammatory and antioxidant effect in a cigarette smoke extract (CSE)-induced lung injury model. Firstly, histological analysis showed that the CSE group exhibited lung injury compared with the control, which was alleviated by AMSO2. Secondly, we estimated its anti-inflammatory capacity. The results indicated that pretreatment with AMSO2 significantly decreased CSE-elevated tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in serum. Thirdly, AMSO2 also showed antioxidant properties through enhancing activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) as well as reducing the level of malondialdehyde (MDA) and myeloperoxidase (MPO). Finally, we elucidated that AMSO2 alleviated inflammation and oxidative stress probably via suppressing ERK/p38 MAPK and inhibiting NF-κB expressions. In conclusion, we proposed that AMSO2 protected against the development of CSE-induced lung injury by reducing inflammatory cytokine levels and augmenting antioxidant activity via ERK/p38 MAPK and NF-κB pathways.
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Affiliation(s)
- Ang Li
- Institute of Pharmaceutics, Medicine School, Shandong University, 44 West Wenhua Road, Jinan 250012, Shandong, China
| | - Yan Liu
- Institute of Pharmaceutics, Medicine School, Shandong University, 44 West Wenhua Road, Jinan 250012, Shandong, China
| | - Xiaosong Zhu
- Institute of Pharmaceutics, Medicine School, Shandong University, 44 West Wenhua Road, Jinan 250012, Shandong, China
| | - Xiao Sun
- Institute of Pharmaceutics, Medicine School, Shandong University, 44 West Wenhua Road, Jinan 250012, Shandong, China
| | - Xiuli Feng
- Institute of Pharmaceutics, Medicine School, Shandong University, 44 West Wenhua Road, Jinan 250012, Shandong, China
| | - Dawei Li
- Shandong Provincial Key Laboratory of Mucosal and Transdermal Drug Delivery Technologies, Shandong Freda Pharmaceutical Group Co., Ltd., 888 Xinluo Street, Jinan 250101, Shandong, China
| | - Jiangqiang Zhang
- Shandong Provincial Key Laboratory of Mucosal and Transdermal Drug Delivery Technologies, Shandong Freda Pharmaceutical Group Co., Ltd., 888 Xinluo Street, Jinan 250101, Shandong, China
| | - Meihua Zhu
- Shandong Provincial Key Laboratory of Mucosal and Transdermal Drug Delivery Technologies, Shandong Freda Pharmaceutical Group Co., Ltd., 888 Xinluo Street, Jinan 250101, Shandong, China
| | - Zhongxi Zhao
- Institute of Pharmaceutics, Medicine School, Shandong University, 44 West Wenhua Road, Jinan 250012, Shandong, China; Shandong Engineering & Technology Research Center for Jujube Food and Drug, 44 West Wenhua Road, Jinan 250012, Shandong, China; Shandong Provincial Key Laboratory of Mucosal and Transdermal Drug Delivery Technologies, Shandong Freda Pharmaceutical Group Co., Ltd., 888 Xinluo Street, Jinan 250101, Shandong, China.
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23
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He S, Li L, Sun S, Zeng Z, Lu J, Xie L. A Novel Murine Chronic Obstructive Pulmonary Disease Model and the Pathogenic Role of MicroRNA-21. Front Physiol 2018; 9:503. [PMID: 29780331 PMCID: PMC5946055 DOI: 10.3389/fphys.2018.00503] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/18/2018] [Indexed: 12/29/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a multi-pathogenesis chronic lung disease. The mechanisms underlying COPD have not been adequately illustrated. Many reseachers argue that microRNAs (miRs) could play a crucial role in COPD. The classic animal model of COPD is both time consuming and costly. This study proposes a novel mice COPD model and explores the role of miR-21 in COPD. A total of 50 wide-type (WT) C57BL/6 mice were separated into five euqlly-sized groups—(1) control group (CG), (2) the novel combined method group (NCM, cigarette smoke (CS) exposure for 28 days combined with cigarette smoke extract (CSE) intraperitoneal injection), (3) the short-term CS exposure group (SCSE, CS exposure for 28 days), (4) the CSE intraperitoneal injection group (CSEII, 28 days CSE intraperitoneal injection), and (5) the long-term CS exposure group (LCSE, CS exposure).The body weight gain of mice were recorded and lung function tested once the modeling was done. The pathological changes and the inflammation level by hematoxylin eosin (H&E) staining and immunohistochemical staining (IHS) on the lung tissue sections were also evaluated. The level of miR-21 in the mice lungs of the mice across all groups was detected by RT-qPCR and the effects of miR-21 knock-down in modeled mice were observed. The mice in LCSE and NCM exhibited the most severe inflammation levels and pathological and pathophysiological changes; while the changes for the mice in SCSE and CSEII were less, they remained more severe than the mice in the CG. The level of miR-21 was found to be negatively correlated with lung functions. Moreover, knocking miR-21 down from the modeled mice, ameliorated all those tested COPD-related changes. Our novel modeling method detected virtually the same changes as those detected in the classic method in WT mice, but in less time and cost. Further, it was determined that the level of miR-21 in the lungs could be an indicator of COPD severity and blocking functions of miR-21 could be a potential treatment for early stage COPD.
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Affiliation(s)
- Shengyang He
- Department of Respiratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Liqiu Li
- Department of Respiratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Shenghua Sun
- Department of Respiratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Zhengpeng Zeng
- Department of Respiratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Junjuan Lu
- Department of Respiratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Lihua Xie
- Department of Respiratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
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24
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Liu Y, Li A, Feng X, Sun X, Zhu X, Zhao Z. Pharmacological Investigation of the Anti-Inflammation and Anti-Oxidation Activities of Diallyl Disulfide in a Rat Emphysema Model Induced by Cigarette Smoke Extract. Nutrients 2018; 10:E79. [PMID: 29329251 PMCID: PMC5793307 DOI: 10.3390/nu10010079] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 12/15/2017] [Accepted: 01/09/2018] [Indexed: 12/21/2022] Open
Abstract
Diallyl disulfide (DADS) is the main organosulfur ingredient in garlic, with known antioxidant and anti-inflammatory activities. The aim of the present study was to investigate the effect of DADS on reducing the inflammation and redox imbalance in a rat emphysema model that was induced by intraperitoneal injection of cigarette smoke extract (CSE). Briefly, DADS exerted an anti-inflammation effect on emphysema rats through decreasing cell influx in the bronchoalveolar lavage fluid (BALF) and suppressing pro-inflammation cytokine production including tumor necrosis factor alpha (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6) via inhibiting the NF-κB pathway. In addition, levels of oxidative stress markers including malondialdehyde (MDA) and myeloperoxidase (MPO) were reduced, while the activities of glutathione (GSH), glutathione peroxidase (GSH-PX), superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) were markedly enhanced by DADS. Moreover, MMP-9 and TIMP-1 expression were down-regulated by DADS. Furthermore, the regulation effects of DADS on CD4⁺ and CD8⁺ T cells were observed. In conclusion, these encouraging findings suggest that DADS could be considered as a promising anti-inflammation and antioxidative agent for the treatment of emphysema.
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Affiliation(s)
- Yan Liu
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
| | - Ang Li
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
| | - Xiuli Feng
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
| | - Xiao Sun
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
| | - Xiaosong Zhu
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
| | - Zhongxi Zhao
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
- Shandong Engineering & Technology Research Center for Jujube Food and Drug, 44 West Wenhua Road, Jinan 250012, China.
- Shandong Provincial Key Laboratory of Mucosal and Transdermal Drug Delivery Technologies, Shandong Academy of Pharmaceutical Sciences, 989 Xinluo Street, Jinan 250101, China.
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25
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Liu Y, Li A, Feng X, Jiang X, Sun X, Huang W, Zhu X, Zhao Z. l-Menthol alleviates cigarette smoke extract induced lung injury in rats by inhibiting oxidative stress and inflammation via nuclear factor kappa B, p38 MAPK and Nrf2 signalling pathways. RSC Adv 2018; 8:9353-9363. [PMID: 35541889 PMCID: PMC9078689 DOI: 10.1039/c8ra00160j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 02/27/2018] [Indexed: 11/21/2022] Open
Abstract
l-Menthol is the main ingredient of peppermint which affects various pharmacological effects such as anti-inflammation and anti-oxidative activity.
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Affiliation(s)
- Yan Liu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan
- China
| | - Ang Li
- School of Pharmaceutical Sciences
- Shandong University
- Jinan
- China
| | - Xiuli Feng
- School of Pharmaceutical Sciences
- Shandong University
- Jinan
- China
| | - Xiaoyan Jiang
- Department of Clinical Pharmacy
- Qilu Hospital
- Shandong University
- Jinan
- China
| | - Xiao Sun
- School of Pharmaceutical Sciences
- Shandong University
- Jinan
- China
| | - Weizhen Huang
- School of Pharmaceutical Sciences
- Shandong University
- Jinan
- China
| | - Xiaosong Zhu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan
- China
| | - Zhongxi Zhao
- School of Pharmaceutical Sciences
- Shandong University
- Jinan
- China
- Shandong Engineering & Technology Research Center for Jujube Food and Drug
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26
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He X, Li T, Kang N, Zeng H, Ren S, Zong D, Li J, Cai S, Chen P, Chen Y. The protective effect of PRMT6 overexpression on cigarette smoke extract-induced murine emphysema model. Int J Chron Obstruct Pulmon Dis 2017; 12:3245-3254. [PMID: 29138553 PMCID: PMC5680965 DOI: 10.2147/copd.s144881] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background Cigarette smoke exposure is the most common risk factor for emphysema, which is one of the major pathologies of COPD. Protein arginine methyltransferase 6 (PRMT6) is a nuclear enzyme that specially catalyzes dimethylation of R2 in histone H3 (H3R2me2a). H3R2me2a prevents trimethylation of H3K4 (H3K4me3), which is located in the transcription start sites of genes in mammalian genomes. We attempted to determine the expression of PRMT6 in human samples, and investigate whether the upregulation of PRMT6 expression can attenuate the development of cigarette smoke extract (CSE)-induced emphysema. Further experiments were performed to elucidate the molecular mechanisms involved. Materials and methods Human lung tissues were obtained from patients undergoing pneumonectomy for benign pulmonary lesions. BALB/c mice were treated with lentiviral vectors intratracheally and injected with CSE three times. The protein expression of PRMT6, H3R2me2a, and H3K4me3 in human and mouse samples, as well as B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X protein (Bax), and endothelial nitric oxide synthase (eNOS) in mice were detected in lung homogenates by Western blotting. The mRNA expression of cyclooxygenase-2, interleukin-6, Bcl-2, Bax, and eNOS in mice was measured by quantitative real-time polymerase chain reaction. Results The expression of PRMT6 was significantly downregulated in the pulmonary parenchyma in smokers with COPD as well as in mice treated with CSE. Overexpression of PRMT6 was detected in the CSE + Lenti-PRMT6 group of mice, which reversed the expression of H3R2me2a and H3K4me3. Inflammation, apoptosis, and oxidative stress levels were severe in the CSE-treated emphysema mice compared with the control group, which was inhibited by the overexpression of PRMT6. Conclusion The overexpression of PRMT6 might inhibit inflammation, apoptosis, and oxidative stress in CSE-induced emphysema mediated by H3R2me2a.
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Affiliation(s)
- Xue He
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Tiao Li
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Naixin Kang
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Huihui Zeng
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Siying Ren
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Dandan Zong
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Jinhua Li
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Shan Cai
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Ping Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital.,Research Unit of Respiratory Disease.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
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He ZH, Chen Y, Chen P, He SD, Zeng HH, Ye JR, Liu D, Cao J. 5-Aza-2'-deoxycytidine protects against emphysema in mice via suppressing p16 Ink4a expression in lung tissue. Int J Chron Obstruct Pulmon Dis 2017; 12:3149-3158. [PMID: 29133977 PMCID: PMC5669795 DOI: 10.2147/copd.s131090] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background There is a growing realization that COPD, or at least emphysema, involves several processes presenting in aging and cellular senescence. Endothelial progenitor cells (EPCs) contribute to neovascularization and play an important role in the development of COPD. The gene for p16Ink4a is a major dominant senescence one. The aim of the present study was to observe changes in lung function, histomorphology of lung tissue, and expression of p16Ink4a in lung tissue and bone marrow-derived EPCs in emphysematous mice induced by cigarette-smoke extract (CSE), and further to search for a potential candidate agent protecting against emphysema induced by CSE. Materials and methods An animal emphysema model was induced by intraperitoneal injection of CSE. 5-Aza-2′-deoxycytidine (5-Aza-CdR) was administered to the emphysematous mice. Lung function and histomorphology of lung tissue were measured. The p16Ink4a protein and mRNA in EPCs and lung tissues were detected using Western blotting and quantitative reverse-transcription polymerase chain reaction, respectively. Results CSE induced emphysema with increased p16Ink4a expression in lung tissue and bone marrow-derived EPCs. 5-Aza-CdR partly protected against emphysema, especially in the lung-morphology profile, and partly protest against the overexpression of p16Ink4a in EPCs and lung tissue induced by CSE. Conclusion 5-Aza-CdR partly protected against emphysema in mice via suppressing p16Ink4a expression in EPCs and lung tissue.
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Affiliation(s)
| | - Yan Chen
- Department of Respiratory Medicine, Second Xiangya Hospital, Central South University, Changsha
| | - Ping Chen
- Department of Respiratory Medicine, Second Xiangya Hospital, Central South University, Changsha
| | - Sheng-Dong He
- Department of Respiratory Medicine, Second Xiangya Hospital, Central South University, Changsha
| | - Hui-Hui Zeng
- Department of Respiratory Medicine, Second Xiangya Hospital, Central South University, Changsha
| | - Ji-Ru Ye
- Department of Respiratory Medicine, Second Xiangya Hospital, Central South University, Changsha
| | - Da Liu
- Department of Respiratory Medicine, Second Xiangya Hospital, Central South University, Changsha
| | - Jun Cao
- Department of Respiratory Medicine, Hunan Provincial People's Hospital, Changsha, China
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Kemény Á, Csekő K, Szitter I, Varga ZV, Bencsik P, Kiss K, Halmosi R, Deres L, Erős K, Perkecz A, Kereskai L, László T, Kiss T, Ferdinandy P, Helyes Z. Integrative characterization of chronic cigarette smoke-induced cardiopulmonary comorbidities in a mouse model. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 229:746-759. [PMID: 28648837 DOI: 10.1016/j.envpol.2017.04.098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 02/24/2017] [Accepted: 04/06/2017] [Indexed: 12/16/2023]
Abstract
Cigarette smoke-triggered inflammatory cascades and consequent tissue damage are the main causes of chronic obstructive pulmonary disease (COPD). There is no effective therapy and the key mediators of COPD are not identified due to the lack of translational animal models with complex characterization. This integrative chronic study investigated cardiopulmonary pathophysiological alterations and mechanisms with functional, morphological and biochemical techniques in a 6-month-long cigarette smoke exposure mouse model. Some respiratory alterations characteristic of emphysema (decreased airway resistance: Rl; end-expiratory work and pause: EEW, EEP; expiration time: Te; increased tidal mid-expiratory flow: EF50) were detected in anaesthetized C57BL/6 mice, unrestrained plethysmography did not show changes. Typical histopathological signs were peribronchial/perivascular (PB/PV) edema at month 1, neutrophil/macrophage infiltration at month 2, interstitial leukocyte accumulation at months 3-4, and emphysema/atelectasis at months 5-6 quantified by mean linear intercept measurement. Emphysema was proven by micro-CT quantification. Leukocyte number in the bronchoalveolar lavage at month 2 and lung matrix metalloproteinases-2 and 9 (MMP-2/MMP-9) activities in months 5-6 significantly increased. Smoking triggered complex cytokine profile change in the lung with one characteristic inflammatory peak of C5a, interleukin-1α and its receptor antagonist (IL-1α, IL-1ra), monokine induced by gamma interferon (MIG), macrophage colony-stimulating factor (M-CSF), tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) at months 2-3, and another peak of interferon-γ (IFN-γ), IL-4, 7, 13, 17, 27 related to tissue destruction. Transient systolic and diastolic ventricular dysfunction developed after 1-2 months shown by significantly decreased ejection fraction (EF%) and deceleration time, respectively. These parameters together with the tricuspid annular plane systolic excursion (TAPSE) decreased again after 5-6 months. Soluble intercellular adhesion molecule-1 (sICAM-1) significantly increased in the heart homogenates at month 6, while other inflammatory cytokines were undetectable. This is the first study demonstrating smoking duration-dependent, complex cardiopulmonary alterations characteristic to COPD, in which inflammatory cytokine cascades and MMP-2/9 might be responsible for pulmonary destruction and sICAM-1 for heart dysfunction.
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Affiliation(s)
- Ágnes Kemény
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary; Department of Medical Biology, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary; Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary.
| | - Kata Csekő
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary; Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary.
| | - István Szitter
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary; Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary.
| | - Zoltán V Varga
- Cardiometabolic Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Faculty of Medicine, H-1089 Budapest, Nagyvárad tér 4., Hungary.
| | - Péter Bencsik
- Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Faculty of Medicine, H-6720 Szeged, Dóm tér 9., Hungary; Pharmahungary Group, H-6722 Szeged, Hajnóczy u. 6., Hungary.
| | - Krisztina Kiss
- Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Faculty of Medicine, H-6720 Szeged, Dóm tér 9., Hungary.
| | - Róbert Halmosi
- Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary; I(st) Department of Internal Medicine, University of Pécs, Faculty of Medicine, H-7624 Pécs, Ifjúság útja 13., Hungary.
| | - László Deres
- Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary; I(st) Department of Internal Medicine, University of Pécs, Faculty of Medicine, H-7624 Pécs, Ifjúság útja 13., Hungary.
| | - Krisztián Erős
- Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary; I(st) Department of Internal Medicine, University of Pécs, Faculty of Medicine, H-7624 Pécs, Ifjúság útja 13., Hungary; Department of Biochemistry and Medical Chemistry, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary.
| | - Anikó Perkecz
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary.
| | - László Kereskai
- Department of Pathology, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary.
| | - Terézia László
- Department of Pathology, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary.
| | - Tamás Kiss
- Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary.
| | - Péter Ferdinandy
- Cardiometabolic Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Faculty of Medicine, H-1089 Budapest, Nagyvárad tér 4., Hungary; Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Faculty of Medicine, H-6720 Szeged, Dóm tér 9., Hungary; Pharmahungary Group, H-6722 Szeged, Hajnóczy u. 6., Hungary.
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary; Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary; MTA-PTE NAP B Chronic Pain Research Group, University of Pécs, Faculty of Medicine, H-7624 Pécs, Szigeti út 12., Hungary; PharmInVivo Ltd, H-7629 Pécs, Szondi György út 10., Hungary.
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29
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Lung damage analyzed by machine vision on tissue sections of mice. Arch Toxicol 2017; 92:425-439. [DOI: 10.1007/s00204-017-2023-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 06/28/2017] [Indexed: 01/14/2023]
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30
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Deng M, Li J, Gan Y, Chen Y, Chen P. Changes in the number of CD31 -CD45 -Sca-1 + cells and Shh signaling pathway involvement in the lungs of mice with emphysema and relevant effects of acute adenovirus infection. Int J Chron Obstruct Pulmon Dis 2017; 12:861-872. [PMID: 28352167 PMCID: PMC5359003 DOI: 10.2147/copd.s129871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background COPD is a leading cause of mortality worldwide, and cigarette smoke is a pivotal risk factor. Adenovirus is a common cause of acute exacerbations of COPD and expedites COPD progression. Lung stem/progenitor cells play an important role in the development of COPD, while the relevant mechanism remains elusive. Here, we investigated the number of lung CD31−CD45−Sca-1+ cells and sonic hedgehog (Shh) signaling pathway expression levels in cigarette smoke extract (CSE)-induced emphysema mice, as well as the relevant effects of acute adenovirus infection (AAI). Materials and methods BALB/c mice were treated with CSE by intraperitoneal injection and/or adenovirus endotracheal instillation at different time points for 28 days. Lung function, lung histomorphology, CD31−CD45−Sca-1+ cell count, and expression levels of major components in the Shh signaling pathway in the lungs were measured. Results CSE intraperitoneal injection and adenovirus endotracheal instillation successfully induced emphysema and AAI in mice, respectively. In the lungs of emphysema mice, both the number of CD31−CD45−Sca-1+ cells and expression levels of Shh signaling pathway molecules were reduced. However, AAI increased the number of inhibited CD31−CD45−Sca-1+ cells and activated the suppression of the Shh signaling pathway. Conclusion Both CD31−CD45−Sca-1+ cell numbers and Shh signaling pathway expression levels were downregulated in the lungs of emphysema mice induced by CSE intraperitoneal injection, which likely contributes to the pathogenesis of emphysema. Additionally, these inhibited lung CD31−CD45−Sca-1+ cells and Shh signaling pathway molecules were upregulated during AAI, indicating that they play a protective role in the epithelial repair process after AAI injury.
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Affiliation(s)
- Minhua Deng
- Respiratory Medicine Department, PLA Rocket Force General Hospital, Beijing; Respiratory Medicine Department
| | | | - Ye Gan
- Rehabilitation Department, Second Xiangya Hospital, Central South University, Changsha, Hunan Province, People's Republic of China
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31
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Shi Z, Chen Y, Pei Y, Long Y, Liu C, Cao J, Chen P. The role of cyclooxygenase-2 in the protection against apoptosis in vascular endothelial cells induced by cigarette smoking. J Thorac Dis 2017; 9:30-41. [PMID: 28203404 DOI: 10.21037/jtd.2017.01.23] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Apoptosis has been demonstrated to be an important upstream event in the pathogenesis of chronic obstructive pulmonary disease (COPD). Cyclooxygenase-2 (COX-2) seems to be biologically relevant in COPD. However, the role of COX-2 in the apoptosis in vascular endothelial cells induced by cigarette smoke extract (CSE) remains to be elucidated. Our recent study found that the prostacyclin, one of the COX products in the microvascular endothelium, inhibited apoptosis in the emphysematous lungs of rats induced by CSE. In order to clarify the role of COX-2 in the apoptosis of vascular endothelial cells induced by CSE, we performed the present experiment to elucidate it. METHODS Twenty surgical lung specimens were obtained from 6 patients with COPD, 7 smoking controls and seven nonsmoking controls. The apoptotic index (AI) and COX-2 protein expression were detected in lung tissues. To further investigate the effects of CSE on the apoptosis and COX-2 expression in a human vascular endothelial cell line, the apoptosis rate and COX-2 expression were examined in human umbilical vein endothelial cells (ECV304) under exposure to varied concentrations of CSE as well as under exposure to 5.0% CSE for varied durations. Repeatedly, the apoptosis rate and COX-2 expression in ECV304 cells under 5.0% CSE were examined after exposing to varied concentrations of celecoxib, a highly selective COX-2 inhibitor. RESULTS Significantly increased AI and expression of COX-2 were found both in the lungs of patients with COPD and smoking controls compared with nonsmoking controls. The CSE induced apoptosis in ECV304 cells in means of both dose-dependent and time-dependent manners. The COX-2 was slightly expressed in the cells after exposing to 5% CSE for 3 and 6 h, and markedly expressed after the exposure time for 9 and 12 h, but vanished after 24 h of the exposure. Of interest, with the completely block of the COX-2 expression by celecoxib at 50.0 µmol/L, the apoptosis rate was markedly increased again in ECV304 cells under exposure to 5.0% CSE. CONCLUSIONS Endothelial cell apoptosis and the expression of COX-2 protein were increased in both COPD patients and CSE-induced vascular endothelial cells. Of interest, it seems that the COX-2 probably had a protective role against the apoptosis in the vascular endothelial cells induced by cigarette smoking.
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Affiliation(s)
- Zhihui Shi
- Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha 410011, China
| | - Yan Chen
- Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha 410011, China
| | - Yanfang Pei
- Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha 410011, China
| | - Yingjiao Long
- Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha 410011, China
| | - Caihong Liu
- Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha 410011, China
| | - Jun Cao
- Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha 410011, China
| | - Ping Chen
- Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha 410011, China
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32
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Paternal exposure to cigarette smoke condensate leads to reproductive sequelae and developmental abnormalities in the offspring of mice. Reprod Toxicol 2016; 65:283-294. [PMID: 27589885 DOI: 10.1016/j.reprotox.2016.08.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 08/23/2016] [Accepted: 08/29/2016] [Indexed: 12/27/2022]
Abstract
Paternal smoking is associated with infertility, birth defects and childhood cancers. Our earlier studies using cigarette smoke condensate (CSC) demonstrated several deleterious changes in male germ cells. Here, we hypothesize that chronic paternal exposure to CSC causes molecular and phenotypic changes in the sire and the offspring, respectively. In this mouse study, CSC caused DNA damage and cytotoxicity in testes via accumulation of benzo(a)pyrene (B[a]P) and cotinine. Decreased expression of growth arrest and DNA damage inducible alpha (Gadd45a), aryl hydrocarbon receptor (Ahr), and cyclin-dependent kinase inhibitor 1A (P21) was seen in CSC exposed testes. Apoptotic germ cell death was detected by induction of Fas, FasL, and activated caspase-3. The CSC-exposed males displayed reduction in sperm motility and fertilizing ability and sired pups with reduced body weight and crown-rump length, and smaller litter size with higher numbers of resorption. This model of CSC exposure demonstrates testicular toxicity and developmental defects in the offspring.
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33
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S-allylmercapto-l-cysteine modulates MUC5AC and AQP5 secretions in a COPD model via NF-кB signaling pathway. Int Immunopharmacol 2016; 39:307-313. [PMID: 27517516 DOI: 10.1016/j.intimp.2016.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/25/2016] [Accepted: 08/01/2016] [Indexed: 11/23/2022]
Abstract
Garlic has shown versatile medicinal activities in the prevention and treatment of diseases such as chronic obstructive pulmonary disease (COPD). However, no individual garlic bioactive components have yet been determined in the COPD treatment effects. In this work, S-allylmercapto-l-cysteine (SAMC) identified in the aged garlic was selected as a model compound to determine its COPD therapeutic potential. The COPD model was established by using lipopolysaccharides (LPS) to stimulate the human airway submucosal gland cell line SPC-A1. Previous studies show that both MUC5AC up-regulation and AQP5 down-regulation play an important role in viscous COPD mucus secretions. The modulation effects of SAMC on LPS-induced MUC5AC and AQP5 productions in SPC-A1 cells were then evaluated. Pretreatment of the SPC-A1 cells with SAMC attenuated MUC5AC secretion and increased AQP5 expression in a dose-dependent manner in the non-cytotoxic concentration range of 20 to 100μM. Mechanistic studies suggested that SAMC could suppress the accumulation of MUC5AC mRNA and inhibit IкBα degradation and NF-кB p65 translocation. These results suggest that SAMC could be a promising candidate in the prevention and treatment of MUC5AC-associated disorders such as COPD.
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34
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Khedoe PPSJ, Rensen PCN, Berbée JFP, Hiemstra PS. Murine models of cardiovascular comorbidity in chronic obstructive pulmonary disease. Am J Physiol Lung Cell Mol Physiol 2016; 310:L1011-27. [PMID: 26993520 DOI: 10.1152/ajplung.00013.2016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 03/15/2016] [Indexed: 01/12/2023] Open
Abstract
Patients with chronic obstructive pulmonary disease (COPD) have an increased risk for cardiovascular disease (CVD). Currently, COPD patients with atherosclerosis (i.e., the most important underlying cause of CVD) receive COPD therapy complemented with standard CVD therapy. This may, however, not be the most optimal treatment. To investigate the link between COPD and atherosclerosis and to develop specific therapeutic strategies for COPD patients with atherosclerosis, a substantial number of preclinical studies using murine models have been performed. In this review, we summarize the currently used murine models of COPD and atherosclerosis, both individually and combined, and discuss the relevance of these models for studying the pathogenesis and development of new treatments for COPD patients with atherosclerosis. Murine and clinical studies have provided complementary information showing a prominent role for systemic inflammation and oxidative stress in the link between COPD and atherosclerosis. These and other studies showed that murine models for COPD and atherosclerosis are useful tools and can provide important insights relevant to understanding the link between COPD and CVD. More importantly, murine studies provide good platforms for studying the potential of promising (new) therapeutic strategies for COPD patients with CVD.
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Affiliation(s)
- P Padmini S J Khedoe
- Department of Pulmonology, Leiden University Medical Center, the Netherlands; Department of Medicine, Division of Endocrinology, Leiden University Medical Center, the Netherlands; and
| | - Patrick C N Rensen
- Department of Medicine, Division of Endocrinology, Leiden University Medical Center, the Netherlands; and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, the Netherlands
| | - Jimmy F P Berbée
- Department of Medicine, Division of Endocrinology, Leiden University Medical Center, the Netherlands; and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, the Netherlands
| | - Pieter S Hiemstra
- Department of Pulmonology, Leiden University Medical Center, the Netherlands
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35
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Zeng H, Shi Z, Kong X, Chen Y, Zhang H, Peng H, Luo H, Chen P. Involvement of B-cell CLL/lymphoma 2 promoter methylation in cigarette smoke extract-induced emphysema. Exp Biol Med (Maywood) 2016; 241:808-16. [PMID: 26924842 DOI: 10.1177/1535370216635759] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 02/02/2016] [Indexed: 12/26/2022] Open
Abstract
Abnormal apoptotic events play an important role in the pathogenesis of emphysema. The B-cell CLL/lymphoma 2 (Bcl-2) family proteins are essential and critical regulators of apoptosis. We determined whether the anti-apoptotic Bcl-2 play a role in the cigarette smoke extract (CSE)-induced emphysema. Furthermore, given the involvement of epigenetics in chronic obstructive pulmonary disease, we hypothesized that the deregulation of Bcl-2 might be caused by gene methylation. The emphysema in BALB/C mice was established by intraperitoneally injection of CSE. 5-aza-2'-deoxycytidine (AZA; a demethylation reagent) and phosphate-buffered saline were also administered intraperitoneally as CSE. TUNEL assay was used to assess apoptotic index of pulmonary cells. The methylation status of CpG dinucleotides within the Bcl-2 promoter was observed in all groups by bisulfite sequencing PCR. Pulmonary expression of Bcl-2, Bax, and cytochrome C were measured after four weeks of treatment. The apoptotic index of pulmonary cells in CSE injection group was much higher than control ((25.88 ± 7.55)% vs (6.28 ± 2.96)%). Compared to control mice, decreased expression of Bcl-2 and high methylation of Bcl-2 promoter was observed in CSE injected mice (0.88 ± 0.08 vs 0.49 ± 0.11, (3.82 ± 1.34)% vs (35.68 ± 5.99)%, P < 0.01).CSE treatment induced lung cell apoptosis and decreased lung function. AZA treatment increased Bcl-2 expression with Bcl-2 promoter demethylation. AZA also alleviated the lung cell apoptosis and function failure caused by CSE treatment. The decreased expression of anti-apoptotic Bcl-2 might account for the increased apoptosis in CSE induced-emphysema. Apparently, epigenetic alternation played a role in this deregulation of Bcl-2 expression, and it might support the involvement of epigenetic events in the pathogenesis of emphysema.
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Affiliation(s)
- Huihui Zeng
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Zhihui Shi
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Xianglong Kong
- Department of Respiratory Medicine, The First Hospital of Changsha, Changsha, Hunan 410011, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hongliang Zhang
- Department of Emergency Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hong Peng
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hong Luo
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Ping Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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36
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Baek JM, Kwak SC, Kim JY, Ahn SJ, Jun HY, Yoon KH, Lee MS, Oh J. Evaluation of a novel technique for intraperitoneal injections in mice. Lab Anim (NY) 2015; 44:440-4. [DOI: 10.1038/laban.880] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 05/19/2015] [Indexed: 11/09/2022]
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He ZH, Chen Y, Chen P, He SD, Ye JR, Liu D. Decitabine enhances stem cell antigen-1 expression in cigarette smoke extract-induced emphysema in animal model. Exp Biol Med (Maywood) 2015; 241:131-9. [PMID: 26264445 DOI: 10.1177/1535370215598402] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 07/08/2015] [Indexed: 12/24/2022] Open
Abstract
Stem cell antigen-1 (Sca-1) is a mouse glycosyl phosphatidylinositol-anchored protein and a cell surface marker found on hematopoietic stem cells (HSCs). Despite decades of study, its biological functions remain little known. Sca-1 is a typical marker of bone marrow-derived HSCs, it is also expressed by a mixture of tissue-resident stem, progenitor cells in nonhematopoietic organs. Endothelial progenitor cell (EPC) is a subtype of HSC and contributes to endothelial repair by homing in on locations of injury. Abnormal genetic methylation has been detected in smoking-related diseases. The present study aimed to investigate the lung function and histomorphology, the expression of Sca-1 gene in lung tissues, and bone marrow-derived EPCs in cigarette smoke extract (CSE)-induced emphysema mice, and to further determine whether Decitabine (Dec), the most widely used inhibitor of DNA methylation, could protect against the damages caused by CSE. The results of the present study demonstrated that Dec could partly protect against CSE-induced emphysema in mice, enhance Sca-1 expression in lung tissue, and bone marrow-derived EPCs. The results suggested that the depletion of the progenitor cell pool and DNA methylation of Sca-1 gene may be involved in the progression of emphysema in mice.
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Affiliation(s)
- Zhi-Hui He
- Intensive Care Unit, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011, China Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011, China
| | - Ping Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011, China
| | - Sheng-Dong He
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011, China
| | - Ji-Ru Ye
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011, China
| | - Da Liu
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011, China
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Li M, Li C, Liu Y, Chen Y, Wu X, Yu D, Werth VP, Williams KJ, Liu ML. Decreased secretion of adiponectin through its intracellular accumulation in adipose tissue during tobacco smoke exposure. Nutr Metab (Lond) 2015; 12:15. [PMID: 26075006 PMCID: PMC4465313 DOI: 10.1186/s12986-015-0011-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 04/25/2015] [Indexed: 11/25/2022] Open
Abstract
Background Cigarette smoking is associated with an increased risk of type 2 diabetes mellitus (T2DM). Smokers exhibit low circulating levels of total adiponectin (ADPN) and high-molecular-weight (HMW) ADPN multimers. Blood concentrations of HMW ADPN multimers closely correlate with insulin sensitivity for handling glucose. How tobacco smoke exposure lowers blood levels of ADPN, however, has not been investigated. In the current study, we examined the effects of tobacco smoke exposure in vitro and in vivo on the intracellular and extracellular distribution of ADPN and its HMW multimers, as well as potential mechanisms. Findings We found that exposure of cultured adipocytes to tobacco smoke extract (TSE) suppressed total ADPN secretion, and TSE administration to mice lowered their plasma ADPN concentrations. Surprisingly, TSE caused intracellular accumulation of HMW ADPN in cultured adipocytes and in the adipose tissue of wild-type mice, while preferentially decreasing HMW ADPN in culture medium and in plasma. Importantly, we found that TSE up-regulated the ADPN retention chaperone ERp44, which colocalized with ADPN in the endoplasmic reticulum. In addition, TSE down-regulated DsbA-L, a factor for ADPN secretion. Conclusions Tobacco smoke exposure traps HMW ADPN intracellularly, thereby blocking its secretion. Our results provide a novel mechanism for hypoadiponectinemia, and may help to explain the increased risk of T2DM in smokers.
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Affiliation(s)
- Mingzhen Li
- Section of Endocrinology, Diabetes & Metabolic Diseases, Temple University School of Medicine, Philadelphia, PA USA
| | - Chunjun Li
- Section of Endocrinology, Diabetes & Metabolic Diseases, Temple University School of Medicine, Philadelphia, PA USA
| | - Yu Liu
- Section of Endocrinology, Diabetes & Metabolic Diseases, Temple University School of Medicine, Philadelphia, PA USA
| | - Yan Chen
- Section of Endocrinology, Diabetes & Metabolic Diseases, Temple University School of Medicine, Philadelphia, PA USA
| | - Xiangdong Wu
- Section of Endocrinology, Diabetes & Metabolic Diseases, Temple University School of Medicine, Philadelphia, PA USA
| | - Demin Yu
- The Metabolic Disease Hospital, Tianjin Medical University, Tianjin, China
| | - Victoria P Werth
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA.,Philadelphia Veterans Administration Medical Center, Philadelphia, PA USA
| | - Kevin Jon Williams
- Section of Endocrinology, Diabetes & Metabolic Diseases, Temple University School of Medicine, Philadelphia, PA USA.,Department of Molecular and Clinical Medicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Ming-Lin Liu
- Section of Endocrinology, Diabetes & Metabolic Diseases, Temple University School of Medicine, Philadelphia, PA USA.,Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA.,Philadelphia Veterans Administration Medical Center, Philadelphia, PA USA
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39
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Tabata C, Tabata R, Takahashi Y, Nakamura K, Nakano T. Thalidomide prevents cigarette smoke extract-induced lung damage in mice. Int Immunopharmacol 2015; 25:511-7. [PMID: 25749497 DOI: 10.1016/j.intimp.2015.02.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 02/20/2015] [Accepted: 02/23/2015] [Indexed: 12/21/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by a progressive airway obstruction that is not completely reversible and is mainly caused by smoking tobacco. COPD is a major cause of morbidity and mortality worldwide and there are currently no proven effective treatments. The pathogenesis of COPD involves several factors such as chronic inflammation, oxidative stress, and apoptosis. Cytokines play important roles in chronic inflammation. Thalidomide (Thal) has been used to treat multiple myeloma due to its inhibitory effects on IL-6-induced cell growth. We recently demonstrated that thalidomide (Thal) played important roles in cytokine-induced lung damage in a bleomycin-induced pulmonary fibrosis model in mice. We herein examined the preventative effects of Thal on cigarette smoke extract (CSE)-induced emphysematous changes in mice. We performed histological examinations and quantitative measurements of the expression of IL-1β and IL-6 mRNA, as well as apoptosis in CSE-induced mouse lung tissues treated with or without Thal. The results of the histological examination showed that Thal ameliorated CSE-induced emphysema in mice. It also inhibited the expression of IL-1β and IL-6 mRNA in mouse lung tissues. Thal decreased apoptosis in the mouse lung. In vitro studies revealed that Thal decreased 1) the expression of IL-1β and IL-6 in human lung epithelial cells, and 2) CSE-induced apoptosis and the inhibition of cell growth, which may be the underlying mechanisms for the preventative effects of Thal on emphysema. These results provide a rationale for exploring the clinical use of Thal for COPD.
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Affiliation(s)
| | - Rie Tabata
- Department of Internal Medicine, Hyogo Prefectural Tsukaguchi Hospital, Japan
| | - Yuta Takahashi
- Department of Pharmacology 1, Faculty of Pharmaceutical Sciences, Mukogawa Women's University, Hyogo, Japan
| | - Kazuki Nakamura
- Department of Pharmacology 1, Faculty of Pharmaceutical Sciences, Mukogawa Women's University, Hyogo, Japan
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He ZH, Chen P, Chen Y, He SD, Ye JR, Zhang HL, Cao J. Comparison between cigarette smoke-induced emphysema and cigarette smoke extract-induced emphysema. Tob Induc Dis 2015; 13:6. [PMID: 25814921 PMCID: PMC4374374 DOI: 10.1186/s12971-015-0033-z] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 03/15/2015] [Indexed: 12/18/2022] Open
Abstract
Background and objective Emphysema is the main pathological feature of COPD and also is the focus of the related research. Although several emphysema animal models have been established, exact comparison of findings is seldom. The present study aimed to compare cigarette smoke (CS) exposure-induced emphysema model and intraperitoneal injection of cigarette smoke extract (CSE)-induced emphysema model to evaluate the effectiveness of the two different modeling methods. Methods Six-week-old male C57BL/6 J mice were used and randomly divided into two groups: CS exposure and intraperitoneal injection of CSE. Each group was subdivided into two subgroups: control and CS or CSE. Lung function, mean linear intercept (MLI), destructive index (DI), apoptotic index (AI), total and differential cells count in broncholavolar lavage fluid (BALF), SOD and IL-6 concentration in serum were measured. Results Compared with their respective controls, lung function was significantly decreased in CS and CSE groups (P < 0.01); MLI, DI, and AI of lung tissue were significantly higher in CS and CSE groups (P < 0.01); total number of leukocytes, the number and percentage of neutrophils (NEUs), and the number of macrophages (MAC) in BALF were significantly higher in CS and CSE groups (P < 0.01); SOD concentration in serum was significantly decreased in CS and CSE groups (P < 0.01); IL-6 concentration in serum was significantly increased in in CS and CSE groups (P < 0.01). There was no significant difference between CS group and CSE group in any of the parameters described above. Conclusions Both CS exposure and intraperitoneal injection of CSE could induce emphysema and the effectiveness of the two different modeling methods were equal.
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Affiliation(s)
- Zhi-Hui He
- Intensive Care Unit, the Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011 China
| | - Ping Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011 China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011 China ; Division of Respiratory Disease, Department of Internal Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011 China
| | - Sheng-Dong He
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011 China
| | - Ji-Ru Ye
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011 China
| | - Hong-Liang Zhang
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central-South University, Changsha, Hunan 410011 China
| | - Jun Cao
- Department of Respiratory Medicine, Hunan Provincial People's Hospital, Changsha, Hunan 410005 China
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Tully M, Zheng L, Acosta G, Tian R, Shi R. Acute systemic accumulation of acrolein in mice by inhalation at a concentration similar to that in cigarette smoke. Neurosci Bull 2014; 30:1017-1024. [PMID: 25446876 DOI: 10.1007/s12264-014-1480-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Accepted: 06/18/2014] [Indexed: 11/28/2022] Open
Abstract
Cigarette smoke is an important environmental factor associated with a wide array of public health concerns. Acrolein, a component of tobacco smoke and a known toxin to various cell types, may be a key pathological factor mediating the adverse effects linked with tobacco smoke. Although acrolein is known to accumulate in the respiratory system after acute nasal exposure, it is not clear if it accumulates systemically, and less is known in the nervous system. The aim of this study was to assess the degree of acrolein accumulation in the circulation and in the spinal cord following acute acrolein inhalation in mice. Using a laboratory-fabricated inhalation chamber, we found elevated urinary 3-HPMA, an acrolein metabolite, and increased acrolein adducts in the spinal cord after weeks of nasal exposure to acrolein at a concentration similar to that in tobacco smoke. The data indicated that acrolein is absorbed into the circulatory system and some enters the nervous system. It is expected that these findings may facilitate further studies to probe the pathological role of acrolein in the nervous system resulting from smoke and other external sources.
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Affiliation(s)
- Melissa Tully
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA.,Indiana University School of Medicine, Indianapolis, IN, USA
| | - Lingxing Zheng
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Glen Acosta
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Ran Tian
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Riyi Shi
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA. .,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA.
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He S, He Z, Chen Y, Ye J, Zong D, Zhang Y, Chen P. C-Kit/c-Kit ligand interaction of bone marrow endothelial progenitor cells is influenced in a cigarette smoke extract-induced emphysema model. Exp Lung Res 2013; 39:258-67. [PMID: 23786491 DOI: 10.3109/01902148.2013.802828] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Smoking causes lung endothelial cell apoptosis and emphysema. Derived from bone marrow, circulating endothelial progenitor cells (EPCs) maintain vascular integrity by replacing and repairing damaged endothelial cells. Smoking influences the number of circulating EPCs. Recruitment of EPCs from bone marrow to peripheral blood depends on the interaction of c-Kit/soluble c-Kit ligand (sKitL). We hypothesized that smoking might influence c-Kit(+) EPCs/sKitL interaction in bone marrow in the development of smoking-related emphysema. In this study, we used a cigarette smoke extract (CSE)-induced emphysema model. METHODS Mice were injected intraperitoneally with PBS/CSE and sacrificed at day 28. Lung function and pathology of lung tissue were measured to characterize the model. Expressions of c-Kit in the lung tissue were assayed. Bone marrow cells were isolated by red blood cell lysis. EPCs/c-Kit(+) EPCs in nonred blood cells were analyzed by flow cytometry. Expressions of KitL and MMP-9, and activity MMP-9 in bone marrow were measured. RESULTS Our data demonstrated that gene and protein expressions of c-Kit were decreased in the lung tissue in this model. Compared with the control group, the number of bone marrow nonred blood cells was unchanged following CSE treatment, while the depletion of bone marrow EPCs/c-Kit(+) EPCs was significant. The level of sKitL was reduced in the bone marrow in the model. The reduction of sKitL was associated with deregulated KitL expression and decreased MMP-9 activity. CONCLUSIONS The interaction between c-Kit and sKitL in bone marrow EPCs, a critical step in endothelial repair, is negatively affected in a CSE-induced emphysema model.
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Affiliation(s)
- Shengdong He
- Department of Pulmonary Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
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Zhang H, Chen P, Zeng H, Zhang Y, Peng H, Chen Y, He Z. Protective Effect of Demethylation Treatment on Cigarette Smoke Extract–Induced Mouse Emphysema Model. J Pharmacol Sci 2013; 123:159-66. [DOI: 10.1254/jphs.13072fp] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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