1
|
Guo P, Lu J, Lei Y. Significant role of circRNA BBS9 in chronic obstructive pulmonary disease via miRNA-103a-3p/BCL2L13. BMC Pulm Med 2023; 23:257. [PMID: 37442983 DOI: 10.1186/s12890-023-02540-2] [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: 11/08/2022] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND Various studies have shown that circular RNA (circRNA) plays a pivotal role in chronic obstructive pulmonary disease (COPD). We aimed to determine the role of circRNA BBS9 in COPD progression. METHODS Real-time quantitative reverse transcription PCR (qRT-PCR) was performed to determine the levels and the linkages of circRNA BBS9, miRNA-103a-3p, and BCL2L13 in cigarette smoke extract (CSE)-treated human pulmonary microvascular endothelial cells (HPMECs). The target binding sites of circRNA BBS9 and miRNA-103a-3p were predicted using the starBase database, and the TargetScan algorithm was used to forecast the potential binding sites of BCL2L13 and miRNA-103a-3p, which were verified using a dual-luciferase reporter assay. An flow cytometry (FCM) assay was performed to determine the rate of apoptosis of HPMECs. Caspase3 activity was determined using a Caspase3 assay kit. The apoptosis-related protein bands were determined by western blotting. RESULTS The level of circRNA BBS9 increased in 1% CSE-induced cells, and silencing of circRNA BBS9 decreased the ratio of apoptotic cells among the 1% CSE-induced HPMECs. The results of dual-luciferase reporter assays showed that miRNA-103a-3p associates with circRNA BBS9. miRNA-103a-3p was downregulated in COPD, and upregulation of miRNA-103a-3p inhibited apoptosis in CSE-stimulated cells. Moreover, BCL2L13 was found to act downstream of miRNA-103a-3p. Silencing of miRNA-103a-3p reversed the inhibitory effect of circRNA BBS9-siRNA. The effects of the miRNA-103a-3p mimic were reversed by the BCL2L13-plasmid. CONCLUSION circRNA BBS9 is involved in COPD development as it inhibits the functioning of miRNA-103a-3p. Our results suggest that circRNA BBS9 may act as a novel target for treating COPD.
Collapse
Affiliation(s)
- Pujian Guo
- Department of Pulmonary and Critical Care Medicine, Wuhan Fourth Hospital, Wuhan, 430030, China
| | - Jing Lu
- Department of Pulmonary and Critical Care Medicine, Wuhan Fourth Hospital, Wuhan, 430030, China
| | - Yu Lei
- Department of Pulmonary and Critical Care Medicine, Wuhan Fourth Hospital, Wuhan, 430030, China.
| |
Collapse
|
2
|
Giebe S, Brux M, Hofmann A, Lowe F, Breheny D, Morawietz H, Brunssen C. Comparative study of the effects of cigarette smoke versus next-generation tobacco and nicotine product extracts on inflammatory biomarkers of human monocytes. Pflugers Arch 2023:10.1007/s00424-023-02809-9. [PMID: 37081240 DOI: 10.1007/s00424-023-02809-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/22/2023]
Abstract
Monocytes exhibiting a pro-inflammatory phenotype play a key role in adhesion and development of atherosclerotic plaques. As an alternative to smoking, next-generation tobacco and nicotine products (NGP) are now widely used. However, little is known about their pro-inflammatory effects on monocytes. We investigated cell viability, anti-oxidant and pro-inflammatory gene and protein expression in THP-1 monocytes after exposure to aqueous smoke extracts (AqE) of a heated tobacco product (HTP), an electronic cigarette (e-cig), a conventional cigarette (3R4F) and pure nicotine (nic). Treatment with 3R4F reduced cell viability in a dose-dependent manner, whereas exposure to alternative smoking products showed no difference to control. At the highest non-lethal dose of 3R4F (20%), the following notable mRNA expression changes were observed for 3R4F, HTP, and e-cig respectively, relative to control; HMOX1 (6-fold, < 2-fold, < 2-fold), NQO1 (3.5-fold, < 2-fold, < 2-fold), CCL2 (4-fold, 3.5-fold, 2.5-fold), IL1B (4-fold, 3-fold, < 2-fold), IL8 (5-fold, 2-fold, 2-fold), TNF (2-fold, 2-fold, < 2-fold) and ICAM1 was below the 2-fold threshold for all products. With respect to protein expression, IL1B (3-fold, < 2-fold, < 2-fold) and IL8 (3.5-fold, 2-fold, 2-fold) were elevated over the 2-fold threshold, whereas CCL2, TNF, and ICAM1 were below 2-fold expression for all products. At higher doses, greater inductions were observed with all extracts; however, NGP responses were typically lower than 3R4F. In conclusion, anti-oxidative and pro-inflammatory processes were activated by all products. NGPs overall showed lower responses relative to controls than THP-1 cells exposed to 3R4F AqE.
Collapse
Affiliation(s)
- Sindy Giebe
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - Melanie Brux
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - Anja Hofmann
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Fetscherstr. 74, D-01307, Dresden, Germany
| | - Frazer Lowe
- B.A.T. (Investments) Limited, Regents Park Road, Millbrook, Southampton, SO15 8TL, UK
| | - Damien Breheny
- B.A.T. (Investments) Limited, Regents Park Road, Millbrook, Southampton, SO15 8TL, UK
| | - Henning Morawietz
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Fetscherstr. 74, D-01307, Dresden, Germany.
| | - Coy Brunssen
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Fetscherstr. 74, D-01307, Dresden, Germany.
| |
Collapse
|
3
|
Song Q, Zhou ZJ, Cai S, Chen Y, Chen P. Oxidative stress links the tumour suppressor p53 with cell apoptosis induced by cigarette smoke. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022; 32:1745-1755. [PMID: 33825597 DOI: 10.1080/09603123.2021.1910211] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
This study was to investigate the effects of oxidative stress in cigarette smoke (CS)-induced cell apoptosis in mice with emphysema. Thirty-two mice were divided into four groups: the control group, the CS group, the CS + Pifithrin-α group, and the CS + NAC group. Pathological changes and apoptosis in lung tissue of mice were detected. The activity of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and total antioxidant capacity (T-AOC) were measured using spectrophotometer. The proteins expression of p53, Bcl-2, Bax, and caspase-3 were determined by western blot. The results showed that cell apoptosis, lung structural damage, and the activity of MDA, as well as the expression of apoptosis-related proteins Bax, total caspase-3, and cleaved caspase-3 were increased in CS-treated mice. The activity of SOD, CAT, and T-AOC, as well as the expression of anti-apoptosis protein Bcl-2 were decreased in CS-treated mice when compared with the control group. However, Pifithrin-α (p53 inhibitor) and N-Acetylcysteine (NAC) could reduce cell apoptosis, lung structural damage and oxidative stress, accelerate the expression of Bcl-2, while suppressing the expression of Bax, total caspase-3 and cleaved caspase-3. More importantly, the treatment with NAC even inhibited the expression of p53. In conclusions, oxidative stress linking the p53 is involved in cell apoptosis in CS-treated emphysema mice.
Collapse
Affiliation(s)
- Qing Song
- Department of Respiratory 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
| | - Zi-Jing Zhou
- Department of Respiratory 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 Respiratory 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 Respiratory 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
| | - Ping Chen
- Department of Respiratory 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
| |
Collapse
|
4
|
Chen Y, Liang L, Wu C, Cao Z, Xia L, Meng J, Wang Z. Epigenetic Control of Vascular Smooth Muscle Cell Function in Atherosclerosis: A Role for DNA Methylation. DNA Cell Biol 2022; 41:824-837. [PMID: 35900288 DOI: 10.1089/dna.2022.0278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Atherosclerosis is a complex vascular inflammatory disease in which multiple cell types are involved, including vascular smooth muscle cells (VSMCs). In response to vascular injury and inflammatory stimuli, VSMCs undergo a "phenotypic switching" characterized by extracellular matrix secretion, loss of contractility, and abnormal proliferation and migration, which play a key role in the progression of atherosclerosis. DNA methylation modification is an important epigenetic mechanism that plays an important role in atherosclerosis. Studies investigating abnormal DNA methylation in patients with atherosclerosis have determined a specific DNA methylation profile, and proposed multiple pathways and genes involved in the etiopathogenesis of atherosclerosis. Recent studies have also revealed that DNA methylation modification controls VSMC function by regulating gene expression involved in atherosclerosis. In this review, we summarize the recent advances regarding the epigenetic control of VSMC function by DNA methylation in atherosclerosis and provide insights into the development of VSMC-centered therapeutic strategies.
Collapse
Affiliation(s)
- Yanjun Chen
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical School, University of South China, Hengyang, China
| | - Lingli Liang
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical School, University of South China, Hengyang, China
| | - Chunyan Wu
- The Third Affiliated Hospital of University of South China, Hengyang, China
| | - Zitong Cao
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical School, University of South China, Hengyang, China
| | - Linzhen Xia
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical School, University of South China, Hengyang, China
| | - Jun Meng
- Functional Department, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Zuo Wang
- Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical School, University of South China, Hengyang, China
| |
Collapse
|
5
|
Zeng Y, Zhao Y, Chen Y, Cai S, Chen P. PECAM EMPs regulate apoptosis in pulmonary microvascular
endothelial cells in COPD by activating the Akt signaling
pathway. Tob Induc Dis 2022; 20:40. [PMID: 35592594 PMCID: PMC9059265 DOI: 10.18332/tid/146959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 12/01/2021] [Accepted: 02/25/2022] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Endothelial microparticles (EMPs) are partly associated with the progress of chronic obstructive pulmonary disease (COPD). We sought to measure the levels of EMPs in COPD patients and in human pulmonary microvascular endothelial cells (HPMECs) exposed to cigarette smoking extract (CSE) to elucidate the potential mechanisms of their action. METHODS We obtained prospectively blood EMPs from 30 stable COPD patients and 20 non-COPD volunteers. EMP subpopulations were determined by flow cytometry in platelet-free plasma according to the expression of membrane specific antigens. Cell growth, proliferation, apoptosis and the expression of protein kinase B (Akt) in HPMECs after exposure to PECAM EMPs were assessed. After intervention with an antioxidant (Eukarion-134, EUK-134), apoptosis and the expression of Akt in HPMECs were also measured. RESULTS Unlike those of MCAM EMPs, VE-cadherin, PECAM and E-selectin EMP values were significantly higher in the stable COPD patients than in the non-COPD volunteers (p<0.05). Only PECAM EMPs were higher in HPMECs exposed to CSE (p<0.05). Further, in vitro studies showed that the apoptosis rate and expression of cleaved caspase 3/9 in HPMECs increased in a dose- and time-independent manner with PECAM EMPs. The expression of phospho-Akt (p-Akt) decreased in a time-independent manner with PECAM EMPs (p<0.05). Compared with the control group, the early apoptosis rate of HPMECs was higher, and the expression of p-Akt was lower in both the PECAM EMP group and EUK-134 + PECAM EMP group (p<0.05). The apoptosis rate declined markedly, and the expression of p-Akt was higher in the EUK-134 + PECAM EMP group, compared with the PECAM EMPs group (p<0.05). CONCLUSIONS The present results suggest that PECAM EMPs positively regulate apoptosis in HPMECs in COPD, likely by decreasing Akt phosphorylation and can be protected by antioxidants.
Collapse
Affiliation(s)
- Yuqin Zeng
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, People’s Republic of China
- Research Unit of Respiratory Disease, Central South University, Changsha, People’s Republic of China
- Hunan Centre for Evidence-Based Medicine, Changsha, People’s Republic of China
| | - Yiyang Zhao
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, People’s Republic of China
- Research Unit of Respiratory Disease, Central South University, Changsha, People’s Republic of China
- Hunan Centre for Evidence-Based Medicine, Changsha, People’s Republic of China
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, People’s Republic of China
- Research Unit of Respiratory Disease, Central South University, Changsha, People’s Republic of China
- Hunan Centre for Evidence-Based Medicine, Changsha, People’s Republic of China
| | - Shan Cai
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, People’s Republic of China
- Research Unit of Respiratory Disease, Central South University, Changsha, People’s Republic of China
- Hunan Centre for Evidence-Based Medicine, Changsha, People’s Republic of China
| | - Ping Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, People’s Republic of China
- Research Unit of Respiratory Disease, Central South University, Changsha, People’s Republic of China
- Hunan Centre for Evidence-Based Medicine, Changsha, People’s Republic of China
| |
Collapse
|
6
|
Wang Z, Zhou S, Zhao J, Nie S, Sun J, Gao X, Lenahan C, Lin Z, Huang Y, Chen G. Tobacco Smoking Increases Methylation of Polypyrimidine Tract Binding Protein 1 Promoter in Intracranial Aneurysms. Front Aging Neurosci 2021; 13:688179. [PMID: 34295240 PMCID: PMC8292010 DOI: 10.3389/fnagi.2021.688179] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/14/2021] [Indexed: 11/20/2022] Open
Abstract
DNA methylation at the gene promoter region is reportedly involved in the development of intracranial aneurysm (IA). This study aims to investigate the methylation levels of polypyrimidine tract-binding protein 1 (PTBP1) in IA, as well as its potential to predict IA. Forty-eight patients with IA and 48 age- and sex-matched healthy controls were recruited into this study. Methylation levels of CpG sites were determined via bisulfite pyrosequencing. The PTBP1 levels in the blood were determined using a real-time quantitative reverse transcription-polymerase chain reaction test. Significant differences were found between IAs and controls in CpG1 (p = 0.001), CpG2 (p < 0.001), CpG3 (p = 0.037), CpG4 (p = 0.003), CpG5 (p = 0.006), CpG6 (p = 0.02), and mean methylation (p < 0.001). The mRNA level of PTBP1 in the blood was much lower in IAs compared with controls (p = 0.002), and the PTBP1 expression was significantly associated with DNA methylation promoter levels in individuals (r = −0.73, p < 0.0001). In addition, stratification analysis comparing smokers and non-smokers revealed that tobacco smokers had significantly higher levels of DNA methylation in PTBP1 than non-smokers (p = 0.002). However, no statistical difference in PTBP1 methylation was found between ruptured and unruptured IA groups (p > 0.05). The ROC analyses of curves revealed that PTBP1 methylation may be a predictor of IA regardless of sex (both sexes, area under curve (AUC) = 0.78, p < 0.0001; male, AUC = 0.76, p = 0.002; female, AUC = 0.79, p < 0.0001). These findings suggest that long-term tobacco smoke exposure led to DNA methylation in the promoter region of the PTBP1 gene, which further decreased PTBP1 gene expression and participated in the pathogenesis of IA. The methylation of PTBP1 may be a potential predictive marker for the occurrence of IA.
Collapse
Affiliation(s)
- Zhepei Wang
- Department of Neurosurgery, Ningbo Hospital, Zhejiang University School of Medicine, Ningbo, China.,Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shengjun Zhou
- Department of Neurosurgery, Ningbo Hospital, Zhejiang University School of Medicine, Ningbo, China.,Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jikuang Zhao
- Department of Neurosurgery, Ningbo Hospital, Zhejiang University School of Medicine, Ningbo, China.,Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Sheng Nie
- Department of Neurosurgery, Ningbo Hospital, Zhejiang University School of Medicine, Ningbo, China
| | - Jie Sun
- Department of Neurosurgery, Ningbo Hospital, Zhejiang University School of Medicine, Ningbo, China
| | - Xiang Gao
- Department of Neurosurgery, Ningbo Hospital, Zhejiang University School of Medicine, Ningbo, China
| | - Cameron Lenahan
- Burrell College of Osteopathic Medicine, Las Cruces, NM, United States
| | - Zhiqin Lin
- Department of Neurosurgery, Ningbo Hospital, Zhejiang University School of Medicine, Ningbo, China
| | - Yi Huang
- Department of Neurosurgery, Ningbo Hospital, Zhejiang University School of Medicine, Ningbo, China.,Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Gao Chen
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| |
Collapse
|
7
|
lncRNA TUG1 regulates human pulmonary microvascular endothelial cell apoptosis via sponging of the miR-9a-5p/BCL2L11 axis in chronic obstructive pulmonary disease. Exp Ther Med 2021; 22:906. [PMID: 34257718 PMCID: PMC8243330 DOI: 10.3892/etm.2021.10338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 02/18/2021] [Indexed: 12/13/2022] Open
Abstract
The aim of the present study was to investigate the function of long non-coding RNA taurine-upregulated gene 1 (lncRNA TUG1) in chronic obstructive pulmonary disease and further assess the underlying molecular mechanisms. Flow cytometry analysis was performed to detect cell apoptosis of human pulmonary microvascular endothelial cells (HPMECs) treated with 1% cigarette smoke extract (CSE). The activity of caspase-3 was measured using a Caspase-3 Activity assay kit and the protein expression of cleaved caspase-3, caspase-3 and Bcl-2 like 11 (BCL2L11) were measured using western blotting. Reverse transcription-quantitative PCR (RT-qPCR) was performed to measure the expression of TUG1 mRNA levels in the treated cells. The association between TUG1, the miR-9a-5p/BCL2L11 axis and with miR-9a-5p were predicted and verified using a dual luciferase reporter assay system. The mRNA expression of miR-9a-5p and BCL2L11, and the transfection efficiency were measured by RT-qPCR. The results showed that CSE induced cell apoptosis and increased lncRNA TUG1 expression in HPMECs. CSE significantly reduced the expression of miR-9a-5p in HPMECs compared with the control group. TUG1-short hairpin RNA relieved cell apoptosis induced by CSE by upregulating miR-9a-5p in HPMECs. The present study predicted and verified that BCL2L11 is a direct target of miR-9a-5p. The mRNA expression of BCL2L11 was increased in HPMECs following CSE treatment compared with the control group. miR-9a-5p mimic and BCL2L11-plasmid markedly increased the expression of miR-9a-5p and BCL2L11, respectively. miR-9a-5p mimic reversed the increase in cell apoptosis induced by CSE by inhibiting BCL2L11 expression in HPMECs. To conclude, the present study demonstrated that lncRNA TUG1 exerted roles in cell apoptosis induced by CSE through modulating the miR-9a-5p/BCL2L11 axis.
Collapse
|
8
|
Zong DD, Liu XM, Li JH, Ouyang RY, Long YJ, Chen P, Chen Y. Resveratrol attenuates cigarette smoke induced endothelial apoptosis by activating Notch1 signaling mediated autophagy. Respir Res 2021; 22:22. [PMID: 33468121 PMCID: PMC7816466 DOI: 10.1186/s12931-021-01620-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 01/07/2021] [Indexed: 12/28/2022] Open
Abstract
Background Increasing evidence shows that endothelial apoptosis contributes to cigarette smoke (CS)-induced disease progression, such as chronic obstructive pulmonary disease (COPD). Our previous studies have validated Notch1 as an anti-apoptotic signaling in CS-induced endothelial apoptosis. Resveratrol (RESV) is a naturally occurring polyphenol that exhibits an anti-apoptotic activity in endothelial cells that exposed to many kinds of destructive stimulus. However, the effects of resveratrol on Notch1 signaling in CS-induced endothelial apoptosis have not yet been fully elucidated. Therefore, the aim of this study was to examine whether RESV can protect endothelial cells from CS-induced apoptosis via regulating Notch1 signaling. Methods Human umbilical vein endothelial cells (HUVECs) were pretreated with RESV for 2 h, followed by cotreatment with 2.5%CSE for 24 h to explore the role of RESV in CSE induced endothelial apoptosis. 3-methyladenine (3-MA) or rapamycin was used to alter autophagic levels. Lentivirus Notch1 intracellular domain (LV-N1ICD), γ-secretase inhibitor (DAPT) and Notch1 siRNA were used to change Notch1 expression. The expression of Notch1, autophagic and apoptotic markers were examined by Western blot and the apoptosis rate was detected by Flow cytometry analysis. Results Our results showed that activating autophagy reduced CSE-induced endothelial apoptosis, while blocking autophagy promoted cell apoptosis in HUVECs. RESV pretreatment attenuated the CSE-induced endothelial apoptosis and activated Notch1 signaling. RESV pretreatment also increased LC3b-II and Beclin1 production, decreased p62 and mTOR expression. 3-MA treatment inhibited autophagy and aggravated CSE induced apoptosis, while rapamycin promoted autophagy, led to a decrease in cell apoptosis. LV-N1ICD transfection upregulated autophagy and reduced apoptosis. However, this protective effect was abolished by 3-MA treatment. In cells treated with DAPT or Notch1 siRNA, autophagy was decreased, while apoptosis was increased. RESV partly rescued the DAPT or Notch1 siRNA induced apoptosis by activating Notch1 signaling. Conclusion In HUVECs, RESV attenuates CSE induced endothelial apoptosis by inducing autophagy in a Notch1-dependent manner.
Collapse
Affiliation(s)
- Dan-Dan Zong
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Xiang-Ming Liu
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Jin-Hua Li
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Ruo-Yun Ouyang
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Ying-Jiao Long
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Ping Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China. .,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China. .,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.
| | - Yan Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China. .,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China. .,Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.
| |
Collapse
|
9
|
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.
Collapse
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
| |
Collapse
|
10
|
Gesmundo I, Silvagno F, Banfi D, Monica V, Fanciulli A, Gamba G, Congiusta N, Libener R, Riganti C, Ghigo E, Granata R. Calcitriol Inhibits Viability and Proliferation in Human Malignant Pleural Mesothelioma Cells. Front Endocrinol (Lausanne) 2020; 11:559586. [PMID: 33133014 PMCID: PMC7579995 DOI: 10.3389/fendo.2020.559586] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/28/2020] [Indexed: 12/21/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is a rare and aggressive tumor, often associated with exposure to asbestos and characterized by poor prognosis and limited treatment options. The biologically active form of vitamin D, calcitriol, exerts anticancer effects in many cell types, both alone and in combination with chemotherapy drugs, through binding to vitamin D receptor (VDR); however, the role of calcitriol in MPM is still unknown. This study aimed to determine the potential antitumor role of calcitriol in MPM. The results showed that calcitriol reduces cell viability and proliferation in human MPM cells lines, which express both cytoplasmic and nuclear VDR; furthermore, calcitriol potentiated the inhibitory activity of the chemotherapy drug PEM. These effects were paralleled by cell cycle arrest and inhibition in expression of c-Myc and cyclins involved in cell cycle progression. Exposure of MPM cells to calcitriol also produced an alteration in mitochondrial function and inhibition in the expression of respiratory chain complex subunits. Finally, the inhibitory effects of calcitriol were also observed on viability of human primary MPM cells. Collectively, these results indicate a novel anticancer role for calcitriol in MPM, suggesting potential for vitamin D derivatives, alone or in combination with chemotherapy, in the treatment of this malignancy.
Collapse
Affiliation(s)
- Iacopo Gesmundo
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | | | - Dana Banfi
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Valentina Monica
- Department of Oncology, University of Turin, Turin, Italy
- Candiolo Cancer Institute-Fondazione del Piemonte per l'Oncologia (FPO) Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Candiolo, Italy
| | - Alessandro Fanciulli
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Giacomo Gamba
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Noemi Congiusta
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Roberta Libener
- Pathology Unit, SS. Antonio e Biagio General Hospital, Alessandria, Italy
| | - Chiara Riganti
- Department of Oncology, University of Turin, Turin, Italy
| | - Ezio Ghigo
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Riccarda Granata
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
- *Correspondence: Riccarda Granata
| |
Collapse
|
11
|
Li NN, Guo Y, Jiang CJ, Zhou YY, Li CH, Li ZG, Wang DL. Allyl isothiocyanate upregulates MRP1 expression through Notch1 signaling in human bronchial epithelial cells. Can J Physiol Pharmacol 2019; 98:324-331. [PMID: 31747319 DOI: 10.1139/cjpp-2019-0448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Multidrug resistance associated protein-1 (MRP1) and Notch signaling are closely related and both play a critical role in chronic obstructive pulmonary disease (COPD) establishment and progression. The aim of our work was to test whether Notch1 is involved in allyl isothiocyanate (AITC) induced MRP1 expression. We used cigarette smoke extract (CSE) to simulate the smoking microenvironment in vitro. The results demonstrated that CSE led to apoptosis as well as reduced the expression of Notch1, Hes1, and MRP1, while AITC significantly reversed this downregulation. Transfected with Notch1 siRNA downregulated MRP1 expression and activity, aggravated the suppression effect by CSE, and abolished the AITC-induced Notch1, Hes1, and MRP1 expression. Validation of the correlation between Notch1 and MRP1 was implemented by gel-shift assays (electrophoretic mobility shift assay). The result revealed an interaction between a specific promoter region of MRP1 and the intracellular domain of Notch1. In conclusion, Notch1 signaling positively regulated MRP1 in 16HBE cells and AITC induced MRP1 expression and function may be attributed to Notch1 signaling. These findings show that Notch1 and MRP1 might have a potential protective effect in the COPD process and become a new therapeutic target for COPD or other lung diseases. It also provides a theoretical basis for the therapeutic effects of AITC.
Collapse
Affiliation(s)
- Ni-Ni Li
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China
| | - Yan Guo
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China
| | - Cheng-Jun Jiang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China
| | - Yuan-Yuan Zhou
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China
| | - Chen-Hui Li
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China
| | - Ze-Geng Li
- The First Affiliated Hospital to Anhui University of Chinese Medicine, Hefei, Anhui 230031, China
| | - Dian-Lei Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, Anhui 230012, China
| |
Collapse
|
12
|
Gong J, Zhao H, Liu T, Li L, Cheng E, Zhi S, Kong L, Yao HW, Li J. Cigarette Smoke Reduces Fatty Acid Catabolism, Leading to Apoptosis in Lung Endothelial Cells: Implication for Pathogenesis of COPD. Front Pharmacol 2019; 10:941. [PMID: 31555131 PMCID: PMC6727183 DOI: 10.3389/fphar.2019.00941] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/24/2019] [Indexed: 11/13/2022] Open
Abstract
Endothelial cell (EC) apoptosis contributes to cigarette smoke (CS)-induced pulmonary emphysema. Metabolism of glucose, glutamine, and fatty acid is dysregulated in patients with chronic obstructive pulmonary disease (COPD). Whether CS causes metabolic dysregulation in ECs leading to development of COPD remains elusive. We hypothesized that CS alters metabolism, resulting in apoptosis in lung ECs. To test this hypothesis, we treated primary mouse pulmonary microvascular ECs (PMVECs) with CS extract (CSE) and employed PMVECs from healthy subjects and COPD patients. We found that mitochondrial respiration was reduced in CSE-treated PMVECs and in PMVECs from COPD patients. Specifically, oxidation of fatty acids (FAO) was reduced in these cells, which linked to reduced carnitine palmitoyltransferase 1a (Cpt1a), an essential enzyme for carnitine shuttle. CSE-induced apoptosis was further increased when cells were treated with a specific Cpt1 inhibitor etomoxir or transfected with Cpt1a siRNA. L-Carnitine treatment augmented FAO but attenuated CSE-induced apoptosis by upregulating Cpt1a. CSE treatment increased palmitate-derived ceramide synthesis, which was reduced by L-carnitine. Although CSE treatment increased glycolysis, inhibiting glycolysis with 2-deoxy-d-glucose had no effects on CSE-mediated apoptosis in lung ECs. Conclusively, FAO reduction increases ceramide and apoptosis in lung ECs treated with CSE, which may contribute to the pathogenesis of COPD/emphysema.
Collapse
Affiliation(s)
- Jiannan Gong
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Hui Zhao
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Tanzhen Liu
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Lifang Li
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Erjing Cheng
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Shuyin Zhi
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Lufei Kong
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Hong-Wei Yao
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Jianqiang Li
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| |
Collapse
|
13
|
Peng H, Guo T, Chen Z, Zhang H, Cai S, Yang M, Chen P, Guan C, Fang X. Hypermethylation of mitochondrial transcription factor A induced by cigarette smoke is associated with chronic obstructive pulmonary disease. Exp Lung Res 2019; 45:101-111. [PMID: 31198067 DOI: 10.1080/01902148.2018.1556748] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/21/2018] [Accepted: 12/04/2018] [Indexed: 02/08/2023]
Abstract
Purpose of the study: Cigarette smoking is a leading environmental contributor to chronic obstructive pulmonary disease (COPD), but its epigenetic regulation of mtTFA gene remains elusive. This study aims to explore the relationship of DNA methylation of mtTFA and cigarette smoking in COPD. Materials and Methods: We analyzed DNA methylation on mtTFA promoters in clinical samples from COPD patients and subjects with normal pulmonary function. Expression of mtTFA mRNA in the clinical samples and mtTFA mRNA and protein in human umbilical vein endothelial cells(HUVECs) treated with cigarette smoke extract (CSE) was evaluated. mtTFA mRNA and protein levels were measured to determine effects of demethylation agents on CSE-treated HUVECs. Results: The DNA methylation level of the mtTFA promoter was significantly increased in COPD group. Expression of mtTFA mRNA was downregulated in the lungs as a consequence of hypermethylation of mtTFA promoter. Expression of mtTFA mRNA and protein was downregulated in CSE-treated HUVECs as a consequence of hypermethylation of the mtTFA promoter. mtTFA expression in CSE-treated HUVECs was restored by the methylation inhibitor, 5-aza-2'-deoxycytidine(AZA). Conclusions: Cigarette smoke-induced hypermethylation of the mtTFA promoter is related to the initiation and progression of COPD. Our finding may provide a new strategy for the intervention of COPD by developing demethylation agents targeting mtTFA hypermethylation.
Collapse
Affiliation(s)
- Hong Peng
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Ting Guo
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Zhiyong Chen
- d d Department of Urology , Xiangya Hospital of Central-South University , Changsha , PR China
| | - Hongliang Zhang
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Shan Cai
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Min Yang
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Ping Chen
- a Department of Respiratory and Critical Care Medicine , The Second Xiangya Hospital of Central-South University , Changsha , PR China
- b b The Respiratory Disease Research Institute of Central South University , Changsha , PR China
- c c The Respiratory Disease Diagnosis and Treatment Center of Hunan Province , Changsha , PR China
| | - Chaxiang Guan
- e Physiological Research Center , Xiangya Medical School of Central-South University , Changsha , PR China
| | - Xiang Fang
- f Department of Neurology , University of Texas Medical Branch , Galveston , Texas, USA
| |
Collapse
|
14
|
Huang X, Zhu Z, Guo X, Kong X. The roles of microRNAs in the pathogenesis of chronic obstructive pulmonary disease. Int Immunopharmacol 2018; 67:335-347. [PMID: 30578969 DOI: 10.1016/j.intimp.2018.12.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/16/2018] [Accepted: 12/05/2018] [Indexed: 02/07/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by a progressive and irreversible airflow obstruction, with an abnormal lung function. The etiology of COPD correlates with complex interactions between environmental and genetic determinants. However, the exact pathogenesis of COPD is obscure although it involves multiple aspects including oxidative stress, imbalance between proteolytic and anti-proteolytic activity, immunity and inflammation, apoptosis, and repair and destruction in both airways and lungs. Many genes have been demonstrated to be involved in those pathogenic processes of this disease in patients exposed to harmful environmental factors. Previous reports have investigated promising microRNAs (miRNAs) to disclose the molecular mechanisms for COPD development induced by different environmental exposure and genetic predisposition encounter, and find some potential miRNA biomarkers for early diagnosis and treatment targets of COPD. In this review, we summarized the expression profiles of the reported miRNAs from studies of COPD associated with environmental risk factors including cigarette smoking and air pollution exposures, and provided an overview of roles of those miRNAs in the pathogenesis of the disease. We also highlighted the potential utility and limitations of miRNAs serving as diagnostic biomarkers and therapeutic targets for COPD.
Collapse
Affiliation(s)
- Xinwei Huang
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
| | - Zongxin Zhu
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
| | - Xiaoran Guo
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
| | - Xiangyang Kong
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China.
| |
Collapse
|
15
|
Zong D, Li J, Cai S, He S, Liu Q, Jiang J, Chen S, Long Y, Chen Y, Chen P, Ouyang R. Notch1 regulates endothelial apoptosis via the ERK pathway in chronic obstructive pulmonary disease. Am J Physiol Cell Physiol 2018; 315:C330-C340. [PMID: 29874112 PMCID: PMC6171044 DOI: 10.1152/ajpcell.00182.2017] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 05/14/2018] [Accepted: 05/18/2018] [Indexed: 02/07/2023]
Abstract
The Notch signaling pathway plays critical role for determining cell fate by controlling proliferation, differentiation, and apoptosis. In the current study, we investigated the roles of the Notch signaling pathway in cigarette smoke (CS)-induced endothelial apoptosis in chronic obstructive pulmonary disease (COPD). We obtained surgical specimens from 10 patients with COPD and 10 control participants. Notch1, 2, and 4 express in endothelial cells, whereas Notch3 mainly localizes in smooth muscle cells. Compared with control groups, we found that the expression of Notch1, 3, and 4 decreased, as well as their target genes Hes1 and Hes2, while the expression of Notch2 and extracellular signal-regulated kinase (ERK)1/2 increased in COPD patients compared with controls, as well as in human pulmonary microvascular endothelial cells (HPMECs) when exposed to CS extract (CSE). Overexpression of Notch1 with N1ICD in HPMECs markedly alleviated the cell apoptosis induced by CSE. The ERK signaling pathway was significantly activated by CSE, which correlated with CSE-induced apoptosis. However, this activation can be abolished by N1ICD overexpression. Furthermore, treatment of PD98059 (ERK inhibitor) significantly alleviated CSE-induced apoptosis, as well as reduced the methylation of mitochondrial transcription factor A (mtTFA) promoter, which was correlated with CS-induced endothelial apoptosis. These results suggest that CS alters Notch signaling in pulmonary endothelial cells. Notch1 protects against CS-induced endothelial apoptosis in COPD through inhibiting the ERK pathway, while the ERK pathway further regulates the methylation of mtTFA promotor.
Collapse
Affiliation(s)
- 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 , 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 , 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 , China
| | - Shengdong He
- Department of Respiratory Medicine, Affiliated Hospital of Luzhou Medical College, Luzhou, China
| | - Qingqing Liu
- Department of Respiratory Medicine, the Second Xiangya Hospital, Research Unit of Respiratory Disease, Diagnosis and Treatment Center of Respiratory Disease, Central South University , Changsha , China
| | - Jiehan Jiang
- Department of Respiratory Medicine, Changsha Central Hospital , Changsha , China
| | - Shanshan Chen
- Department of Radiology, the Second Xiangya Hospital, Central South University , Changsha , China
| | - Yingjiao Long
- Department of Respiratory Medicine, the Second Xiangya Hospital, Research Unit of Respiratory Disease, Diagnosis and Treatment Center of Respiratory Disease, Central South University , Changsha , 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 , 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 , China
| | - Ruoyun Ouyang
- Department of Respiratory Medicine, the Second Xiangya Hospital, Research Unit of Respiratory Disease, Diagnosis and Treatment Center of Respiratory Disease, Central South University , Changsha , China
| |
Collapse
|
16
|
Madani A, Alack K, Richter MJ, Krüger K. Immune-regulating effects of exercise on cigarette smoke-induced inflammation. J Inflamm Res 2018; 11:155-167. [PMID: 29731655 PMCID: PMC5923223 DOI: 10.2147/jir.s141149] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Long-term cigarette smoking (LTCS) represents an important risk factor for cardiac infarction and stroke and the central risk factor for the development of a bronchial carcinoma, smoking-associated interstitial lung fibrosis, and chronic obstructive pulmonary disease. The pathophysiologic development of these diseases is suggested to be promoted by chronic and progressive inflammation. Cigarette smoking induces repetitive inflammatory insults followed by a chronic and progressive activation of the immune system. In the pulmonary system of cigarette smokers, oxidative stress, cellular damage, and a chronic activation of pattern recognition receptors are described which are followed by the translocation of the NF-kB, the release of pro-inflammatory cytokines, chemokines, matrix metalloproteases, and damage-associated molecular patterns. In parallel, smoke pollutants cross directly through the alveolus-capillary interface and spread through the systemic bloodstream targeting different organs. Consequently, LTCS induces a systemic low-grade inflammation and increased oxidative stress in the vascular system. In blood, these processes promote an increased coagulation and endothelial dysfunction. In muscle tissue, inflammatory processes activate catabolic signaling pathways followed by muscle wasting and sarcopenia. In brain, several characteristics of neuroinflammation were described. Regular exercise training has been shown to be an effective nonpharmacological treatment strategy in smoke-induced pulmonary diseases. It is well established that exercise training exerts immune-regulating effects by activating anti-inflammatory signaling pathways. In this regard, the release of myokines from contracting skeletal muscle, the elevations of cortisol and adrenalin, the reduced expression of Toll-like receptors, and the increased mobilization of immune-regulating leukocyte subtypes might be of vital importance. Exercise training also increases the local and systemic antioxidative capacity and several compensatory mechanisms in tissues such as an increased anabolic signaling in muscle or an increased compliance of the vascular system. Accordingly, regular exercise training seems to protect long-term smokers against some important negative local and systemic consequences of smoking. Data suggest that it seems to be important to start exercise training as early as possible.
Collapse
Affiliation(s)
- Ashkan Madani
- Department of Exercise and Health, Institute of Sports Science, Leibniz University Hannover, Germany
| | - Katharina Alack
- Department of Sports Medicine, University of Giessen, Germany
| | - Manuel Jonas Richter
- Department of Internal Medicine, Justus Liebig University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), Germany
- German Center for Lung Research (DZL), Giessen, Germany
| | - Karsten Krüger
- Department of Exercise and Health, Institute of Sports Science, Leibniz University Hannover, Germany
| |
Collapse
|
17
|
Matsuyama N, Shibata S, Matoba A, Kudo TA, Danielsson J, Kohjitani A, Masaki E, Emala CW, Mizuta K. The dopamine D 1 receptor is expressed and induces CREB phosphorylation and MUC5AC expression in human airway epithelium. Respir Res 2018; 19:53. [PMID: 29606146 PMCID: PMC5879645 DOI: 10.1186/s12931-018-0757-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/20/2018] [Indexed: 02/07/2023] Open
Affiliation(s)
- Nao Matsuyama
- Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba, Sendai, Miyagi, 9808575, Japan
| | - Sumire Shibata
- Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba, Sendai, Miyagi, 9808575, Japan
| | - Atsuko Matoba
- Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba, Sendai, Miyagi, 9808575, Japan
| | - Tada-Aki Kudo
- Department of Oral Physiology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Jennifer Danielsson
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY, USA
| | - Atsushi Kohjitani
- Department of Dental Anesthesiology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Eiji Masaki
- Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba, Sendai, Miyagi, 9808575, Japan
| | - Charles W Emala
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY, USA
| | - Kentaro Mizuta
- Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba, Sendai, Miyagi, 9808575, Japan. .,Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY, USA.
| |
Collapse
|
18
|
Rastogi M, Sarkar S, Makol A, Sandip Singh R, Saikia UN, Banerjee D, Chopra S, Chakraborti A. Anti-endothelial cell antibody rich sera from rheumatic heart disease patients induces proinflammatory phenotype and methylation alteration in endothelial cells. Genes Dis 2018; 5:275-289. [PMID: 30320192 PMCID: PMC6176156 DOI: 10.1016/j.gendis.2018.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 02/05/2018] [Indexed: 01/06/2023] Open
Abstract
Rheumatic heart disease (RHD) is a major cause of cardiovascular morbidity and mortality in developing nations like India. RHD commonly affects the mitral valve which is lined by a single layer of endothelial cells (ECs). The role of ECs in mitral valve damage during RHD is not well elucidated. In here, anti-endothelial cell antibody from RHD patients has been used to stimulate the ECs (HUVECs and HMVECs). ECs proinflammatory phenotype with increased expression of TNFα, IL-6, IL-8, IFNγ, IL-1β, ICAM1, VCAM1, E-selectin, laminin B, and vimentin was documented in both ECs. The promoter hypomethylation of various key inflammatory cytokines (TNFα, IL-6, and IL-8), integrin (ICAM1) associated with leukocyte transendothelial migration, and extracellular matrix genes (vimentin, and laminin) were also observed. Further, the in-vitro data was in accordance with ex-vivo observations which correlated significantly with the etiological factors such as smoking, socioeconomic status, and housing. Thus, the study sheds light on the role of ECs in RHD which is a step forward in the elucidation of disease pathogenesis.
Collapse
Affiliation(s)
- Mukul Rastogi
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Subendu Sarkar
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Ankita Makol
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Rana Sandip Singh
- Department of Cardiothoracic and Vascular Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Uma Nahar Saikia
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Dibyajyoti Banerjee
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Seema Chopra
- Department of Obstetrics and Gynaecology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Anuradha Chakraborti
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| |
Collapse
|
19
|
Long YJ, Liu XP, Chen SS, Zong DD, Chen Y, Chen P. miR-34a is involved in CSE-induced apoptosis of human pulmonary microvascular endothelial cells by targeting Notch-1 receptor protein. Respir Res 2018; 19:21. [PMID: 29373969 PMCID: PMC5787261 DOI: 10.1186/s12931-018-0722-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 01/12/2018] [Indexed: 12/25/2022] Open
Abstract
Background Abnormal apoptosis of lung endothelial cells has been observed in emphysematous lung tissue and has been suggested to be an important upstream event in the pathogenesis of chronic obstructive pulmonary disease (COPD). Studies have shown that microRNAs (miRNAs) contribute to the pathogenesis of pulmonary diseases by regulating cell apoptosis. The present study was designed to investigate the expression of microRNA-34a (miR-34a) in human pulmonary microvascular endothelial cells (HPMECs) exposed to cigarette smoke extract (CSE), and the potential regulatory role of miR-34a in endothelial cell apoptosis. Results Our results showed that the expression of miR-34a was significantly increased in CSE-treated HPMECs, and inhibiting miR-34a attenuated CSE-induced HPMEC apoptosis. Furthermore, expression of Notch-1, a receptor protein in the Notch signalling pathway, was decreased and was inversely correlated with miR-34a expression in HPMECs treated with CSE. Computational miRNA target prediction confirmed that Notch-1 is a target of miR-34a. Luciferase reporter assay further confirmed the direct interaction between miR-34a and the 3’-untranslated region (UTR) of Notch-1. Restoration of Notch-1 pathway was able to partially block the effect of miR-34a on HPMEC apoptosis. These results indicate that Notch-1 is a critical downstream target of miR-34a in regulating the CSE-induced HPMEC apoptosis. Conclusions Our results suggest that miR-34a plays a key role in CSE-induced endothelial cell apoptosis by directly regulating its target gene Notch-1 in endothelial cells.
Collapse
Affiliation(s)
- Ying-Jiao Long
- Division of Respiratory 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
| | - Xiao-Peng Liu
- Department of Intensive Care Unit, The Want Want Hospital, Changsha, Hunan, 410013, China
| | - Shan-Shan Chen
- Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China
| | - Dan-Dan Zong
- Division of Respiratory 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
| | - Yan Chen
- Division of Respiratory 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
| | - Ping Chen
- Division of Respiratory 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. .,Division of Respiratory Medicine, Department of Internal Medicine, The Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, China.
| |
Collapse
|
20
|
Cai Z, Liu J, Bian H, Cai J, Jin Q, Han J. Fluoxetine, an Antidepressant Drug, Inhibited Cigarette Smoke-Induced Pulmonary Inflammation and Apoptosis in Rats. Inflammation 2017; 40:1375-1381. [PMID: 28477248 DOI: 10.1007/s10753-017-0580-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The present study was designed to evaluate the anti-inflammatory effect of fluoxetine (Flu) against cigarette smoke (CS)-induced chronic obstructive pulmonary disease (COPD) in rats. Forty male Sprague-Dawley (SD) rats were randomly assigned to five groups: control group, CS group, dexamethasone (2 mg/kg) group, and flu (2 mg/kg). H&E staining demonstrated that Flu inhibited CS-induced pathological injury. In addition, Flu could restore the levels of superoxide dismutase (SOD) and malondialdehyde (MDA) in serum. Flu also inhibited the levels of cytokines including tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β). Furthermore, flu significantly inhibited the protein levels of TLR/NF-κB and apoptosis pathway in CS-induced rats. Our findings suggested that flu might effectively ameliorate the progression of COPD via inflammation and apoptosis pathway in rats.
Collapse
Affiliation(s)
- Zhiyong Cai
- Newborn department, Yancheng Maternity and Child Health Care Hospital, Yancheng, Jiangsu Province, 224000, China
| | - Jindi Liu
- Nursing department, Yancheng Maternity and Child Health Care Hospital, Yancheng, Jiangsu Province, 224000, China
| | - Hongliang Bian
- Newborn department, Yancheng Maternity and Child Health Care Hospital, Yancheng, Jiangsu Province, 224000, China.
| | - Jinlan Cai
- Newborn department, Yancheng Maternity and Child Health Care Hospital, Yancheng, Jiangsu Province, 224000, China
| | - Qing Jin
- Newborn department, Yancheng Maternity and Child Health Care Hospital, Yancheng, Jiangsu Province, 224000, China
| | - Jijing Han
- Newborn department, Yancheng Maternity and Child Health Care Hospital, Yancheng, Jiangsu Province, 224000, China
| |
Collapse
|
21
|
Giebe S, Cockcroft N, Hewitt K, Brux M, Hofmann A, Morawietz H, Brunssen C. Cigarette smoke extract counteracts atheroprotective effects of high laminar flow on endothelial function. Redox Biol 2017; 12:776-786. [PMID: 28432984 PMCID: PMC5397582 DOI: 10.1016/j.redox.2017.04.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 04/04/2017] [Indexed: 02/04/2023] Open
Abstract
Tobacco smoking and hemodynamic forces are key stimuli in the development of endothelial dysfunction and atherosclerosis. High laminar flow has an atheroprotective effect on the endothelium and leads to a reduced response of endothelial cells to cardiovascular risk factors compared to regions with disturbed or low laminar flow. We hypothesize that the atheroprotective effect of high laminar flow could delay the development of endothelial dysfunction caused by cigarette smoking. Primary human endothelial cells were stimulated with increasing dosages of aqueous cigarette smoke extract (CSEaq). CSEaq reduced cell viability in a dose-dependent manner. The main mediator of cellular adaption to oxidative stress, nuclear factor erythroid 2-related factor 2 (NRF2) and its target genes heme oxygenase (decycling) 1 (HMOX1) or NAD(P)H quinone dehydrogenase 1 (NQO1) were strongly increased by CSEaq in a dose-dependent manner. High laminar flow induced elongation of endothelial cells in the direction of flow, activated the AKT/eNOS pathway, increased eNOS expression, phosphorylation and NO release. These increases were inhibited by CSEaq. Pro-inflammatory adhesion molecules intercellular adhesion molecule-1 (ICAM1), vascular cell adhesion molecule-1 (VCAM1), selectin E (SELE) and chemokine (C-C motif) ligand 2 (CCL2/MCP-1) were increased by CSEaq. Low laminar flow induced VCAM1 and SELE compared to high laminar flow. High laminar flow improved endothelial wound healing. This protective effect was inhibited by CSEaq in a dose-dependent manner through the AKT/eNOS pathway. Low as well as high laminar flow decreased adhesion of monocytes to endothelial cells. Whereas, monocyte adhesion was increased by CSEaq under low laminar flow, this was not evident under high laminar flow. This study shows the activation of major atherosclerotic key parameters by CSEaq. Within this process, high laminar flow is likely to reduce the harmful effects of CSEaq to a certain degree. The identified molecular mechanisms might be useful for development of alternative therapy concepts.
Collapse
Affiliation(s)
- Sindy Giebe
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Natalia Cockcroft
- Research & Development, British American Tobacco, Southampton, United Kingdom
| | - Katherine Hewitt
- Research & Development, British American Tobacco, Southampton, United Kingdom
| | - Melanie Brux
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Anja Hofmann
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Henning Morawietz
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany.
| | - Coy Brunssen
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany.
| |
Collapse
|
22
|
Brunssen C, Giebe S, Hofmann A, Brux M, Morawietz H. Evaluation of Cytotoxic, Oxidative, and Pro-Inflammatory Effects of Aqueous Cigarette Smoke Extract on Human Monocytes: A Potential Model System for Assessment of Next-Generation Tobacco and Nicotine Products. ACTA ACUST UNITED AC 2017. [DOI: 10.1089/aivt.2016.0037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Coy Brunssen
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Sindy Giebe
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Anja Hofmann
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Melanie Brux
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Henning Morawietz
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, Medical Faculty Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| |
Collapse
|
23
|
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.
Collapse
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
| |
Collapse
|
24
|
Dobrowolski SF, Lyons-Weiler J, Spridik K, Vockley J, Skvorak K, Biery A. DNA methylation in the pathophysiology of hyperphenylalaninemia in the PAH(enu2) mouse model of phenylketonuria. Mol Genet Metab 2016; 119:1-7. [PMID: 26822703 PMCID: PMC8958364 DOI: 10.1016/j.ymgme.2016.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 12/31/2015] [Accepted: 01/01/2016] [Indexed: 12/25/2022]
Abstract
Phenylalanine hydroxylase deficient phenylketonuria (PKU) is the paradigm for a treatable inborn error of metabolism where maintaining plasma phenylalanine (Phe) in the therapeutic range relates to improved clinical outcomes. While Phe is the presumed intoxicating analyte causal in neurologic damage, the mechanism(s) of Phe toxicity has remained elusive. Altered DNA methylation is a recognized response associated with exposure to numerous small molecule toxic agents. Paralleling this effect, we hypothesized that chronic Phe over-exposure in the brain would lead to aberrant DNA methylation with secondary influence upon gene regulation that would ultimately contribute to PKU neuropathology. The PAH(enu2) mouse models human PKU with intrinsic hyperphenylalaninemia, abnormal response to Phe challenge, and neurologic deficit. To examine this hypothesis, we assessed DNA methylation patterns in brain tissues using methylated DNA immunoprecipitation and paired end sequencing in adult PAH(enu2) animals maintained under either continuous dietary Phe restriction or chronic hyperphenylalaninemia. Heterozygous PAH(enu2/WT) litter mates served as controls for normal Phe exposure. Extensive repatterning of DNA methylation was observed in brain tissue of hyperphenylalaninemic animals while Phe restricted animals displayed an attenuated pattern of aberrant DNA methylation. Affected gene coding regions displayed aberrant hypermethylation and hypomethylation. Gene body methylation of noncoding RNA genes was observed and among these microRNA genes were prominent. Of particular note, observed only in hyperphenylalaninemic animals, was hypomethylation of miRNA genes within the imprinted Dlk1-Dio3 locus on chromosome 12. Aberrant methylation of microRNA genes influenced their expression which has secondary effects upon the expression of targeted protein coding genes. Differential hypermethylation of gene promoters was exclusive to hyperphenylalaninemic PAH(enu2) animals. Genes with synaptic involvement were targets of promoter hypermethylation that resulted in down-regulation of their expression. Gene dysregulation secondary to abnormal DNA methylation may be contributing to PKU neuropathology. These results suggest drugs that prevent or correct aberrant DNA methylation may offer a novel therapeutic option to management of neurological symptoms in PKU patients.
Collapse
Affiliation(s)
- S F Dobrowolski
- Department of Pathology, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States.
| | - J Lyons-Weiler
- Genomics and Proteomics Core Laboratories, University of Pittsburgh, 3343 Forbes Avenue, Pittsburgh, PA 15260, United States
| | - K Spridik
- Department of Pathology, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States
| | - J Vockley
- Department of Pediatrics, University of Pittsburgh School of Medicine, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States; Department of Human Genetics, University of Pittsburgh Graduate School of Public Health, 4401 Penn Avenue, Pittsburgh, PA 15224, United States
| | - K Skvorak
- Department of Pediatrics, University of Pittsburgh School of Medicine, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States; Department of Human Genetics, University of Pittsburgh Graduate School of Public Health, 4401 Penn Avenue, Pittsburgh, PA 15224, United States
| | - A Biery
- Department of Pathology, Children's Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, United States
| |
Collapse
|
25
|
Zong D, Ouyang R, Li J, Chen Y, Chen P. Notch signaling in lung diseases: focus on Notch1 and Notch3. Ther Adv Respir Dis 2016; 10:468-84. [PMID: 27378579 PMCID: PMC5933616 DOI: 10.1177/1753465816654873] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Notch signaling is an evolutionarily conserved cell–cell communication mechanism
that plays a key role in lung homeostasis, injury and repair. The loss of
regulation of Notch signaling, especially Notch1 and Notch3, has recently been
linked to the pathogenesis of important lung diseases, in particular, chronic
obstructive pulmonary disease (COPD), asthma, pulmonary fibrosis, pulmonary
arterial hypertension (PAH), lung cancer and lung lesions in some congenital
diseases. This review focuses on recent advances related to the mechanisms and
the consequences of aberrant or absent Notch1/3 activity in the initiation and
progression of lung diseases. Our increasing understanding of this signaling
pathway offers great hope that manipulating Notch signaling may represent a
promising alternative complementary therapeutic strategy in the future.
Collapse
Affiliation(s)
- Dandan Zong
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ruoyun Ouyang
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jinhua Li
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ping Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital of Central South University, 139 Renmin Middle Road, Changsha, Hunan 410011, People's Republic of China
| |
Collapse
|