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Wang S, Ma Y, Li W, Zhao Y, Gao Y, Wang S. LncRNA SNHG5/IGF2BP1/Occludin axis regulates Nd 2O 3 induced blood-testis barrier disruption. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 358:124527. [PMID: 38992831 DOI: 10.1016/j.envpol.2024.124527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/27/2024] [Accepted: 07/08/2024] [Indexed: 07/13/2024]
Abstract
Neodymium oxide (Nd2O3) is a rare earth element that can lead to various type of tissue and organ damage with prolonged exposure. The long noncoding RNA small nucleolar ribonucleic acid host gene 5 (lncRNA SNHG5) plays a role in disease progressiong. However, its connection with Nd2O3 induced reproductive harm in males has not been thoroughly investigated. Our research discovered that exposure to Nd2O3 increases the expression of SNHG5 in the testes of mice, which in turn binds directly to and reduces in the protein levels of insulin like growth factor 2 mRNA-binding protein 1 (IGF2BP1) both in vivo and in vitro. This process disrupts the cytoskeleton of blood-testis barrier(BTB) by impacting the stability of the tight junction protein Occludin (Ocln) mRNA structure and the permeability of the BTB. In summary, our study elucidates the regulatory mechanism of SNHG5/IGF2BP1/Occludin axis in Nd2O3-induced BTB injury, providing valuable insights for the treatment of male infertility.
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Affiliation(s)
- Shurui Wang
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Yupeng Ma
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Wenjie Li
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Yuhang Zhao
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Yanrong Gao
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Suhua Wang
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China.
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He Q, Xu S, Ma X, Qian Y, Lu X, Feng W, Chen Z. SHP-1 mediates cigarette smoke extract-induced epithelial-mesenchymal transformation and inflammation in 16HBE cells. Open Med (Wars) 2024; 19:20240991. [PMID: 39091610 PMCID: PMC11292789 DOI: 10.1515/med-2024-0991] [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: 09/26/2023] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 08/04/2024] Open
Abstract
Src-homology region 2 domain-containing phosphatase 1 (SHP-1) is considered an anti-inflammatory factor, but its role in chronic obstructive pulmonary disease (COPD) remains unknown. Herein, overexpression of SHP-1 was utilized to explore the functions of SHP-1 in COPD models established by stimulating 16HBE cells with cigarette smoke extracts (CSE) in vitro. SHP-1 was downregulated in both COPD patients and CES-treated 16HBE cells. SHP-1 overexpression reinforced cell viability and significantly prevented CSE-induced cell apoptosis in 16HBE cells. Furthermore, SHP-1 overexpression greatly reversed the CSE-induced migration, epithelial-mesenchymal transition (EMT), and pro-inflammatory factor production in 16HBE cells. In addition, CSE activated the P65 and PI3K/AKT pathways in 16HBE cells, which was also reversed by SHP-1 overexpression. Our findings indicated that SHP-1 alleviated CSE-induced EMT and inflammation in 16HBE cells, suggesting that SHP-1 regulated the development of COPD, and these functions may be linked to the inhibition of the PI3K/AKT pathway.
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Affiliation(s)
- Quan He
- Department of Respiratory and Critical Care Medicine, Zhenjiang Hospital of Integrated Traditional Chinese and Western Medicine, Zhenjiang, Jiangsu, 212000, China
| | - Shuanglan Xu
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Yunnan University, The Second People’s Hospital of Yunnan Province, Kunming, Yunnan, 650021, China
| | - Xiaomei Ma
- Department of Respiratory and Critical Care Medicine, Zhenjiang Hospital of Integrated Traditional Chinese and Western Medicine, Zhenjiang, Jiangsu, 212000, China
| | - Yuanxia Qian
- Department of Pharmacy, Zhenjiang Hospital of Integrated Traditional Chinese and Western Medicine, Zhenjiang, Jiangsu, 212000, China
| | - Xuzhi Lu
- Department of Respiratory and Critical Care Medicine, Zhenjiang Hospital of Integrated Traditional Chinese and Western Medicine, Zhenjiang, Jiangsu, 212000, China
| | - Weiqi Feng
- Department of Respiratory and Critical Care Medicine, Zhenjiang Hospital of Integrated Traditional Chinese and Western Medicine, Zhenjiang, Jiangsu, 212000, China
| | - Zi Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, 210029, China
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Liu X, Zhang J, Zhang D, Pan Y, Zeng R, Xu C, Shi S, Xu J, Qi Q, Dong X, Wang J, Liu T, Dong L. Necroptosis plays a role in TL1A-induced airway inflammation and barrier damage in asthma. Respir Res 2024; 25:271. [PMID: 38987753 PMCID: PMC11238433 DOI: 10.1186/s12931-024-02900-4] [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: 01/09/2024] [Accepted: 06/29/2024] [Indexed: 07/12/2024] Open
Abstract
BACKGROUND Airway epithelial cell (AEC) necroptosis contributes to airway allergic inflammation and asthma exacerbation. Targeting the tumor necrosis factor-like ligand 1 A (TL1A)/death receptor 3 (DR3) axis has a therapeutic effect on asthmatic airway inflammation. The role of TL1A in mediating necroptosis of AECs challenged with ovalbumin (OVA) and its contribution to airway inflammation remains unclear. METHODS We evaluated the expression of the receptor-interacting serine/threonine-protein kinase 3(RIPK3) and the mixed lineage kinase domain-like protein (MLKL) in human serum and lung, and histologically verified the level of MLKL phosphorylation in lung tissue from asthmatics and OVA-induced mice. Next, using MLKL knockout mice and the RIPK3 inhibitor GSK872, we investigated the effects of TL1A on airway inflammation and airway barrier function through the activation of necroptosis in experimental asthma. RESULTS High expression of necroptosis marker proteins was observed in the serum of asthmatics, and necroptosis was activated in the airway epithelium of both asthmatics and OVA-induced mice. Blocking necroptosis through MLKL knockout or RIPK3 inhibition effectively attenuated parabronchial inflammation, mucus hypersecretion, and airway collagen fiber accumulation, while also suppressing type 2 inflammatory factors secretion. In addition, TL1A/ DR3 was shown to act as a death trigger for necroptosis in the absence of caspases by silencing or overexpressing TL1A in HBE cells. Furthermore, the recombinant TL1A protein was found to induce necroptosis in vivo, and knockout of MLKL partially reversed the pathological changes induced by TL1A. The necroptosis induced by TL1A disrupted the airway barrier function by decreasing the expression of tight junction proteins zonula occludens-1 (ZO-1) and occludin, possibly through the activation of the NF-κB signaling pathway. CONCLUSIONS TL1A-induced airway epithelial necroptosis plays a significant role in promoting airway inflammation and barrier dysfunction in asthma. Inhibition of the TL1A-induced necroptosis pathway could be a promising therapeutic strategy.
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Affiliation(s)
- Xiaofei Liu
- Department of Respiratory, Shandong Institute of Respiratory Diseases, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China
| | - Jintao Zhang
- Department of Respiratory, Shandong Institute of Respiratory Diseases, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China
| | - Dong Zhang
- Department of Respiratory, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Yun Pan
- Department of Respiratory, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Rong Zeng
- Department of Respiratory, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Changjuan Xu
- Department of Respiratory, Shandong Institute of Respiratory Diseases, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China
| | - Shuochuan Shi
- Department of Respiratory, Shandong Institute of Respiratory Diseases, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China
| | - Jiawei Xu
- Department of Respiratory, Shandong Institute of Respiratory Diseases, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China
| | - Qian Qi
- Department of Respiratory, Shandong Institute of Respiratory Diseases, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China
| | - Xueli Dong
- Department of Respiratory, Shandong Institute of Respiratory Diseases, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China
| | - Junfei Wang
- Department of Respiratory and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, China
| | - Tian Liu
- Department of Respiratory and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, China
| | - Liang Dong
- Department of Respiratory, Shandong Institute of Respiratory Diseases, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China.
- Department of Respiratory, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China.
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Wei X, Liu N, Feng Y, Wang H, Han W, Zhuang M, Zhang H, Gao W, Lin Y, Tang X, Zheng Y. Competitive-like binding between carbon black and CTNNB1 to ΔNp63 interpreting the abnormal respiratory epithelial repair after injury. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 929:172652. [PMID: 38653146 DOI: 10.1016/j.scitotenv.2024.172652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Airway epithelium is extraordinary vulnerable to damage owning to continuous environment exposure. Subsequent repair is therefore essential to restore the homeostasis of respiratory system. Disruptions in respiratory epithelial repair caused by nanoparticles exposure have been linked to various human diseases, yet implications in repair process remain incompletely elucidated. This study aims to elucidate the key stage in epithelial repair disturbed by carbon black (CB) nanoparticles, highlighting the pivotal role of ΔNp63 in mediating the epithelium repair. A competitive-like binding between CB and beta-catenin 1 (CTNNB1) to ΔNp63 is proposed to elaborate the underlying toxicity mechanism. Specifically, CB exhibits a remarkable inhibitory effect on cell proliferation, leading to aberrant airway epithelial repair, as validated in air-liquid culture. ΔNp63 drives efficient epithelial proliferation during CB exposure, and CTNNB1 was identified as a target of ΔNp63 by bioinformatics analysis. Further molecular dynamics simulation reveals that oxygen-containing functional groups on CB disrupt the native interaction of CTNNB1 with ΔNp63 through competitive-like binding pattern. This process modulates CTNNB1 expression, ultimately restraining proliferation during respiratory epithelial repair. Overall, the current study elucidates that the diminished interaction between CTNNB1 and ΔNp63 impedes respiratory epithelial repair in response to CB exposure, thereby enriching the public health risk assessment on CB-related respiratory diseases.
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Affiliation(s)
- Xiaoran Wei
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Nan Liu
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Yawen Feng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Hongmei Wang
- Department of Pulmonary and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266003, China
| | - Weizhong Han
- Department of Pulmonary and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266003, China
| | - Min Zhuang
- Department of Pulmonary and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266003, China
| | - Hongna Zhang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Wei Gao
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Yongfeng Lin
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xiaowen Tang
- Department of Medical Chemistry, School of Pharmacy, Qingdao University, Qingdao 266071, China.
| | - Yuxin Zheng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
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Ma J, Chen Z, Wu K, Lei J, Zhao L. Risk factor analysis and nomogram for predicting poor symptom control in smoking asthmatics. BMC Pulm Med 2024; 24:264. [PMID: 38824531 PMCID: PMC11144325 DOI: 10.1186/s12890-024-03076-9] [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: 11/29/2023] [Accepted: 05/27/2024] [Indexed: 06/03/2024] Open
Abstract
BACKGROUND Smoking induces and modifies the airway immune response, accelerating the decline of asthmatics' lung function and severely affecting asthma symptoms' control level. To assess the prognosis of asthmatics who smoke and to provide reasonable recommendations for treatment, we constructed a nomogram prediction model. METHODS General and clinical data were collected from April to September 2021 from smoking asthmatics aged ≥14 years attending the People's Hospital of Zhengzhou University. Patients were followed up regularly by telephone or outpatient visits, and their medication and follow-up visits were recorded during the 6-months follow-up visit, as well as their asthma control levels after 6 months (asthma control questionnaire-5, ACQ-5). The study employed R4.2.2 software to conduct univariate and multivariate logistic regression analyses to identify independent risk factors for 'poorly controlled asthma' (ACQ>0.75) as the outcome variable. Subsequently, a nomogram prediction model was constructed. Internal validation was used to test the reproducibility of the model. The model efficacy was evaluated using the consistency index (C-index), receiver operating characteristic (ROC) curve, calibration curve, and decision curve. RESULTS Invitations were sent to 231 asthmatics who smoked. A total of 202 participants responded, resulting in a final total of 190 participants included in the model development. The nomogram established five independent risk factors (P<0.05): FEV1%pred, smoking index (100), comorbidities situations, medication regimen, and good or poor medication adherence. The area under curve (AUC) of the modeling set was 0.824(95%CI 0.765-0.884), suggesting that the nomogram has a high ability to distinguish poor asthma control in smoking asthmatics after 6 months. The calibration curve showed a C-index of 0.824 for the modeling set and a C-index of 0.792 for the self-validation set formed by 1000 bootstrap sampling, which means that the prediction probability of the model was consistent with reality. Decision curve analysis (DCA) of the nomogram revealed that the net benefit was higher when the risk threshold probability for poor asthma control was 4.5 - 93.9%. CONCLUSIONS FEV1%pred, smoking index (100), comorbidities situations, medication regimen, and medication adherence were identified as independent risk factors for poor asthma control after 6 months in smoking asthmatics. The nomogram established based on these findings can effectively predict relevant risk and provide clinicians with a reference to identify the poorly controlled population with smoking asthma as early as possible, and to select a better therapeutic regimen. Meanwhile, it can effectively improve the medication adherence and the degree of attention to complications in smoking asthma patients.
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Affiliation(s)
- Jinxin Ma
- Department of Respiratory and Critical Care Medicine, People's Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450003, People's Republic of China
- Department of Respiratory and Critical Care Medicine, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan Province, 471009, People's Republic of China
| | - Ziheng Chen
- Department of Respiratory and Critical Care Medicine, People's Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450003, People's Republic of China
| | - Ke Wu
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, 550004, People's Republic of China
| | - Jiahui Lei
- Department of Respiratory and Critical Care Medicine, People's Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450003, People's Republic of China
| | - Limin Zhao
- Department of Respiratory and Critical Care Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, Henan Province, 450003, People's Republic of China.
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Chung C, Park SY, Huh JY, Kim NH, Shon C, Oh EY, Park YJ, Lee SJ, Kim HC, Lee SW. Fine particulate matter aggravates smoking induced lung injury via NLRP3/caspase-1 pathway in COPD. J Inflamm (Lond) 2024; 21:13. [PMID: 38654364 DOI: 10.1186/s12950-024-00384-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND Exposure to noxious particles, including cigarette smoke and fine particulate matter (PM2.5), is a risk factor for chronic obstructive pulmonary disease (COPD) and promotes inflammation and cell death in the lungs. We investigated the combined effects of cigarette smoking and PM2.5 exposure in patients with COPD, mice, and human bronchial epithelial cells. METHODS The relationship between PM2.5 exposure and clinical parameters was investigated in patients with COPD based on smoking status. Alveolar destruction, inflammatory cell infiltration, and pro-inflammatory cytokines were monitored in the smoking-exposed emphysema mouse model. To investigate the mechanisms, cell viability and death and pyroptosis-related changes in BEAS-2B cells were assessed following the exposure to cigarette smoke extract (CSE) and PM2.5. RESULTS High levels of ambient PM2.5 were more strongly associated with high Saint George's respiratory questionnaire specific for COPD (SGRQ-C) scores in currently smoking patients with COPD. Combined exposure to cigarette smoke and PM2.5 increased mean linear intercept and TUNEL-positive cells in lung tissue, which was associated with increased inflammatory cell infiltration and inflammatory cytokine release in mice. Exposure to a combination of CSE and PM2.5 reduced cell viability and upregulated NLRP3, caspase-1, IL-1β, and IL-18 transcription in BEAS-2B cells. NLRP3 silencing with siRNA reduced pyroptosis and restored cell viability. CONCLUSIONS PM2.5 aggravates smoking-induced airway inflammation and cell death via pyroptosis. Clinically, PM2.5 deteriorates quality of life and may worsen prognosis in currently smoking patients with COPD.
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Affiliation(s)
- Chiwook Chung
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, 05505, Seoul, Republic of Korea
- Department of Pulmonary and Critical Care Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Republic of Korea
| | - Suk Young Park
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, 05505, Seoul, Republic of Korea
| | - Jin-Young Huh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, 05505, Seoul, Republic of Korea
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Chung- Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong, Republic of Korea
| | - Na Hyun Kim
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, 05505, Seoul, Republic of Korea
| | - ChangHo Shon
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, 05505, Seoul, Republic of Korea
- Efficacy Evaluation Center, WOOJUNGBIO Inc, Hwaseong, Republic of Korea
| | - Eun Yi Oh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, 05505, Seoul, Republic of Korea
- Department of Physiology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young-Jun Park
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Seon-Jin Lee
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Hwan-Cheol Kim
- Department of Occupational and Environmental Medicine, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Sei Won Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, 05505, Seoul, Republic of Korea.
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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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Correnti S, Preianò M, Gamboni F, Stephenson D, Pelaia C, Pelaia G, Savino R, D'Alessandro A, Terracciano R. An integrated metabo-lipidomics profile of induced sputum for the identification of novel biomarkers in the differential diagnosis of asthma and COPD. J Transl Med 2024; 22:301. [PMID: 38521955 PMCID: PMC10960495 DOI: 10.1186/s12967-024-05100-2] [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: 12/21/2023] [Accepted: 03/15/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Due to their complexity and to the presence of common clinical features, differentiation between asthma and chronic obstructive pulmonary disease (COPD) can be a challenging task, complicated in such cases also by asthma-COPD overlap syndrome. The distinct immune/inflammatory and structural substrates of COPD and asthma are responsible for significant differences in the responses to standard pharmacologic treatments. Therefore, an accurate diagnosis is of central relevance to assure the appropriate therapeutic intervention in order to achieve safe and effective patient care. Induced sputum (IS) accurately mirrors inflammation in the airways, providing a more direct picture of lung cell metabolism in comparison to those specimen that reflect analytes in the systemic circulation. METHODS An integrated untargeted metabolomics and lipidomics analysis was performed in IS of asthmatic (n = 15) and COPD (n = 22) patients based on Ultra-High-Pressure Liquid Chromatography-Mass Spectrometry (UHPLC-MS) and UHPLC-tandem MS (UHPLC-MS/MS). Partial Least Squares-Discriminant Analysis (PLS-DA) was applied to resulting dataset. The analysis of main enriched metabolic pathways and the association of the preliminary metabolites/lipids pattern identified to clinical parameters of asthma/COPD differentiation were explored. Multivariate ROC analysis was performed in order to determine the discriminatory power and the reliability of the putative biomarkers for diagnosis between COPD and asthma. RESULTS PLS-DA indicated a clear separation between COPD and asthmatic patients. Among the 15 selected candidate biomarkers based on Variable Importance in Projection scores, putrescine showed the highest score. A differential IS bio-signature of 22 metabolites and lipids was found, which showed statistically significant variations between asthma and COPD. Of these 22 compounds, 18 were decreased and 4 increased in COPD compared to asthmatic patients. The IS levels of Phosphatidylethanolamine (PE) (34:1), Phosphatidylglycerol (PG) (18:1;18:2) and spermine were significantly higher in asthmatic subjects compared to COPD. CONCLUSIONS This is the first pilot study to analyse the IS metabolomics/lipidomics signatures relevant in discriminating asthma vs COPD. The role of polyamines, of 6-Hydroxykynurenic acid and of D-rhamnose as well as of other important players related to the alteration of glycerophospholipid, aminoacid/biotin and energy metabolism provided the construction of a diagnostic model that, if validated on a larger prospective cohort, might be used to rapidly and accurately discriminate asthma from COPD.
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Affiliation(s)
- Serena Correnti
- Department of Health Sciences, Magna Græcia University, 88100, Catanzaro, Italy.
| | | | - Fabia Gamboni
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Daniel Stephenson
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Corrado Pelaia
- Department of Medical and Surgical Sciences, Magna Græcia University, 88100, Catanzaro, Italy
| | - Girolamo Pelaia
- Department of Health Sciences, Magna Græcia University, 88100, Catanzaro, Italy
| | - Rocco Savino
- Department of Medical and Surgical Sciences, Magna Græcia University, 88100, Catanzaro, Italy
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Rosa Terracciano
- Department of Experimental and Clinical Medicine, Magna Græcia University, 88100, Catanzaro, Italy.
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9
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Altieri A, Marshall CL, Ramotar P, Lloyd D, Hemshekhar M, Spicer V, van der Does AM, Mookherjee N. Human Host Defense Peptide LL-37 Suppresses TNFα-Mediated Matrix Metalloproteinases MMP9 and MMP13 in Human Bronchial Epithelial Cells. J Innate Immun 2024; 16:203-215. [PMID: 38471488 PMCID: PMC10997319 DOI: 10.1159/000537775] [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: 09/29/2023] [Accepted: 02/09/2024] [Indexed: 03/14/2024] Open
Abstract
INTRODUCTION TNFα-inducible matrix metalloproteinases play a critical role in the process of airway remodeling in respiratory inflammatory disease including asthma. The cationic host defense peptide LL-37 is elevated in the lungs during airway inflammation. However, the impact of LL-37 on TNFα-driven processes is not well understood. Here, we examined the effect of LL-37 on TNFα-mediated responses in human bronchial epithelial cells (HBECs). METHODS We used a slow off-rate modified aptamer-based proteomics approach to define the HBEC proteome altered in response to TNFα. Abundance of selected protein candidates and signaling intermediates was examined using immunoassays, ELISA and Western blots, and mRNA abundance was examined by qRT-PCR. RESULTS Proteomics analysis revealed that 124 proteins were significantly altered, 12 proteins were enhanced by ≥2-fold compared to unstimulated cells, in response to TNFα. MMP9 was the topmost increased protein in response to TNFα, enhanced by ∼10-fold, and MMP13 was increased by ∼3-fold, compared to unstimulated cells. Furthermore, we demonstrated that LL-37 significantly suppressed TNFα-mediated MMP9 and MMP13 in HBEC. Mechanistic data revealed that TNFα-mediated MMP9 and MMP13 production is controlled by SRC kinase and that LL-37 enhances related upstream negative regulators, namely, phospho-AKT (T308) and TNFα-mediated TNFAIP3 or A20. CONCLUSIONS The findings of this study suggest that LL-37 may play a role in intervening in the process of airway remodeling in chronic inflammatory respiratory disease such as asthma.
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Affiliation(s)
- Anthony Altieri
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | | | - Padmanie Ramotar
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada
| | - Dylan Lloyd
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Mahadevappa Hemshekhar
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Victor Spicer
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Anne M. van der Does
- PulmoScience Lab, Department of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands
| | - Neeloffer Mookherjee
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
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10
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Wang Q, Wen W, Zhou L, Liu F, Ren X, Yu L, Chen H, Jiang Z. LL-37 improves sepsis-induced acute lung injury by suppressing pyroptosis in alveolar epithelial cells. Int Immunopharmacol 2024; 129:111580. [PMID: 38310763 DOI: 10.1016/j.intimp.2024.111580] [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: 11/03/2023] [Revised: 01/19/2024] [Accepted: 01/20/2024] [Indexed: 02/06/2024]
Abstract
BACKGROUND LL-37 (also known as murine CRAMP) is a human antimicrobial peptide that plays a crucial role in innate immune defence against sepsis through various mechanisms. However, its involvement in sepsis-induced lung injury remains unclear. OBJECTIVES This work investigates the impact of LL-37 on pyroptosis generated by LPS in alveolar epithelial cells. The research utilizes both in vivo and in vitro sepsis-associated acute lung injury (ALI) models to understand the underlying molecular pathways. METHODS In vivo, an acute lung injury model induced by sepsis was established by intratracheal administration of LPS in C57BL/6J mice, which were subsequently treated with low-dose CRAMP (recombinant murine cathelicidin, 2.5 mg.kg-1) and high-dose CRAMP (5.0 mg.kg-1). In vitro, pyroptosis was induced in a human alveolar epithelial cell line (A549) by stimulation with LPS and ATP. Treatment was carried out with recombinant human LL-37, or LL-37 was knocked out in A549 cells using small interfering RNA (siRNA). Subsequently, haematoxylin and eosin staining was performed to observe the histopathological changes in lung tissues in the control group and sepsis-induced lung injury group. TUNEL and PI staining were used to observe DNA fragmentation and pyroptosis in mouse lung tissues and cells in the different groups. An lactate dehydrogenase (LDH) assay was performed to measure the cell death rate. The expression levels of NLRP3, caspase1, caspase 1 p20, GSDMD, NT-GSDMD, and CRAMP were detected in mice and cells using Western blotting, qPCR, and immunohistochemistry. ELISA was used to assess the levels of interleukin (IL)-1β and IL-18 in mouse serum, bronchoalveolar lavage fluid (BALF) and lung tissue and cell culture supernatants. RESULTS The expression of NLRP3, caspase1 p20, NT-GSDMD, IL 18 and IL1β in the lung tissue of mice with septic lung injury was increased, which indicated activation of the canonical pyroptosis pathway and coincided with an increase in CRAMP expression. Treatment with recombinant CRAMP improved pyroptosis in mice with lung injury. In vitro, treatment with LPS and ATP upregulated these classic pyroptosis molecules, LL-37 knockdown exacerbated pyroptosis, and recombinant human LL-37 treatment alleviated pyroptosis in alveolar epithelial cells. CONCLUSION These findings indicate that LL-37 protects against septic lung injury by modulating the expression of classic pyroptotic pathway components, including NLRP3, caspase1, and GSDMD and downstream inflammatory factors in alveolar epithelial cells.
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Affiliation(s)
- Quanzhen Wang
- Department of Critical Care Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China
| | - Wei Wen
- Department of Critical Care Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China
| | - Lei Zhou
- The First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, China; Department of Respiratory Intensive Care Unit, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China
| | - Fen Liu
- Department of Critical Care Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China
| | - Xiaoxu Ren
- Department of Critical Care Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China
| | - Lifeng Yu
- Department of Critical Care Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China
| | - Huanqin Chen
- Department of Gerontology, Qilu Hospital, Shandong University, Jinan, 250012 Shandong, China
| | - Zhiming Jiang
- Department of Critical Care Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China.
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11
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Jiang AY, Witten J, Raji IO, Eweje F, MacIsaac C, Meng S, Oladimeji FA, Hu Y, Manan RS, Langer R, Anderson DG. Combinatorial development of nebulized mRNA delivery formulations for the lungs. NATURE NANOTECHNOLOGY 2024; 19:364-375. [PMID: 37985700 PMCID: PMC10954414 DOI: 10.1038/s41565-023-01548-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/16/2023] [Indexed: 11/22/2023]
Abstract
Inhaled delivery of mRNA has the potential to treat a wide variety of diseases. However, nebulized mRNA lipid nanoparticles (LNPs) face several unique challenges including stability during nebulization and penetration through both cellular and extracellular barriers. Here we develop a combinatorial approach addressing these barriers. First, we observe that LNP formulations can be stabilized to resist nebulization-induced aggregation by altering the nebulization buffer to increase the LNP charge during nebulization, and by the addition of a branched polymeric excipient. Next, we synthesize a combinatorial library of ionizable, degradable lipids using reductive amination, and evaluate their delivery potential using fully differentiated air-liquid interface cultured primary lung epithelial cells. The final combination of ionizable lipid, charge-stabilized formulation and stability-enhancing excipient yields a significant improvement in lung mRNA delivery over current state-of-the-art LNPs and polymeric nanoparticles.
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Affiliation(s)
- Allen Y Jiang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jacob Witten
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Idris O Raji
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, USA
| | - Feyisayo Eweje
- Harvard and MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
- Harvard/MIT MD-PhD Program, Boston, MA, USA
| | - Corina MacIsaac
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Harvard and MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sabrina Meng
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Favour A Oladimeji
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Yizong Hu
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Rajith S Manan
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, USA
- Harvard and MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Daniel G Anderson
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, USA.
- Harvard and MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
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12
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Jia L, Liu X, Liu X, Guan Q, Tian Y, Li J, Zhao P. Bufei Yishen formula protects the airway epithelial barrier and ameliorates COPD by enhancing autophagy through the Sirt1/AMPK/Foxo3 signaling pathway. Chin Med 2024; 19:32. [PMID: 38413976 PMCID: PMC10900682 DOI: 10.1186/s13020-024-00905-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 02/17/2024] [Indexed: 02/29/2024] Open
Abstract
OBJECT Bufei Yishen formula (BYF), a traditional Chinese medicine alleviates COPD symptoms and suppresses airway epithelial inflammation. In this study, we determined whether BYF protects the airway epithelial barrier from destruction in COPD rats. METHODS The protective effects of BYF on the airway epithelial barrier were examined in a rat COPD model. BEAS-2B epithelial cells were exposed to cigarette smoke extract (CSE) to determine the effect of BYF on epithelial barrier function. Transcriptomic and network analyses were conducted to identify the protective mechanisms. RESULTS Oral BYF reduced the severity of COPD in rats by suppressing the decline in lung function, pathological changes, inflammation, and protected airway epithelial barrier function by upregulating apical junction proteins, including occludin (OCLN), zonula occludens (ZO)-1, and E-cadherin (E-cad). BYF treatment reduced epithelial permeability, and increased TEER as well as the apical junction proteins, OCLN, ZO-1, and E-cad in BEAS-2B cells exposed to CSE. Furthermore, 58 compounds identified in BYF were used to predict 421 potential targets. In addition, the expression of 572 differentially expressed genes (DEGs) was identified in CSE-exposed BEAS-2B cells. A network analysis of the 421 targets and 572 DEGs revealed that BYF regulates multiple pathways, of which the Sirt1, AMPK, Foxo3, and autophagy pathways may be the most important with respect to protective mechanisms. Moreover, in vitro experiments confirmed that nobiletin, one of the active compounds in BYF, increased apical junction protein levels, including OCLN, ZO-1, and E-cad. It also increased LC3B and phosphorylated AMPK levels and decreased the phosphorylation of FoxO3a. CONCLUSIONS BYF protects the airway epithelial barrier in COPD by enhancing autophagy through regulation of the SIRT1/AMPK/FOXO3 signaling pathway.
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Affiliation(s)
- Lidan Jia
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan Province, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructed by Henan Province & Education Ministry of P. R. China, Zhengzhou, 450046, Henan Province, China
| | - Xuefang Liu
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan Province, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructed by Henan Province & Education Ministry of P. R. China, Zhengzhou, 450046, Henan Province, China
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, 450000, China
| | - Xinguang Liu
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan Province, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructed by Henan Province & Education Ministry of P. R. China, Zhengzhou, 450046, Henan Province, China
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, 450000, China
| | - Qingzhou Guan
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan Province, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructed by Henan Province & Education Ministry of P. R. China, Zhengzhou, 450046, Henan Province, China
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, 450000, China
| | - Yange Tian
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan Province, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructed by Henan Province & Education Ministry of P. R. China, Zhengzhou, 450046, Henan Province, China
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, 450000, China
| | - Jiansheng Li
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan Province, China.
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructed by Henan Province & Education Ministry of P. R. China, Zhengzhou, 450046, Henan Province, China.
- Department of Respiratory Diseases, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450000, China.
| | - Peng Zhao
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan Province, China.
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructed by Henan Province & Education Ministry of P. R. China, Zhengzhou, 450046, Henan Province, China.
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, 450000, China.
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13
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Yadav B, Bhattacharya SS, Rosen L, Nagpal R, Yadav H, Yadav JS. Oro-Respiratory Dysbiosis and Its Modulatory Effect on Lung Mucosal Toxicity during Exposure or Co-Exposure to Carbon Nanotubes and Cigarette Smoke. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:314. [PMID: 38334585 PMCID: PMC10856953 DOI: 10.3390/nano14030314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/27/2024] [Accepted: 01/30/2024] [Indexed: 02/10/2024]
Abstract
The oro-respiratory microbiome is impacted by inhalable exposures such as smoking and has been associated with respiratory health conditions. However, the effect of emerging toxicants, particularly engineered nanoparticles, alone or in co-exposure with smoking, is poorly understood. Here, we investigated the impact of sub-chronic exposure to carbon nanotube (CNT) particles, cigarette smoke extract (CSE), and their combination. The oral, nasal, and lung microbiomes were characterized using 16S rRNA-based metagenomics. The exposures caused the following shifts in lung microbiota: CNT led to a change from Proteobacteria and Bacteroidetes to Firmicutes and Tenericutes; CSE caused a shift from Proteobacteria to Bacteroidetes; and co-exposure (CNT+CSE) had a mixed effect, maintaining higher numbers of Bacteroidetes (due to the CNT effect) and Tenericutes (due to the CSE effect) compared to the control group. Oral microbiome analysis revealed an abundance of the following genera: Acinetobacter (CNT), Staphylococcus, Aggregatibacter, Allobaculum, and Streptococcus (CSE), and Alkalibacterium (CNT+CSE). These proinflammatory microbial shifts correlated with changes in the relative expression of lung mucosal homeostasis/defense proteins, viz., aquaporin 1 (AQP-1), surfactant protein A (SP-A), mucin 5b (MUC5B), and IgA. Microbiota depletion reversed these perturbations, albeit to a varying extent, confirming the modulatory role of oro-respiratory dysbiosis in lung mucosal toxicity. This is the first demonstration of specific oro-respiratory microbiome constituents as potential modifiers of toxicant effects in exposed lungs.
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Affiliation(s)
- Brijesh Yadav
- Pulmonary Pathogenesis and Immunotoxicology Laboratory, Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0056, USA; (B.Y.)
| | - Sukanta S. Bhattacharya
- Pulmonary Pathogenesis and Immunotoxicology Laboratory, Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0056, USA; (B.Y.)
| | - Lauren Rosen
- Department of Pathology and Laboratory Medicine, University of Cincinnati, UC Health University Hospital Laboratory Medicine Building, Suite 110234 Goodman Street, Cincinnati, OH 45219-0533, USA
| | - Ravinder Nagpal
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL 32306, USA
| | - Hariom Yadav
- USF Center for Microbiome Research, Department of Neurosurgery and Brain Repair, Internal Medicine-Digestive Diseases and Nutrition, University of South Florida, Tampa, FL 33613, USA
| | - Jagjit S. Yadav
- Pulmonary Pathogenesis and Immunotoxicology Laboratory, Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0056, USA; (B.Y.)
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14
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Lu HF, Zhou YC, Yang LT, Zhou Q, Wang XJ, Qiu SQ, Cheng BH, Zeng XH. Involvement and repair of epithelial barrier dysfunction in allergic diseases. Front Immunol 2024; 15:1348272. [PMID: 38361946 PMCID: PMC10867171 DOI: 10.3389/fimmu.2024.1348272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 01/15/2024] [Indexed: 02/17/2024] Open
Abstract
The epithelial barrier serves as a critical defense mechanism separating the human body from the external environment, fulfilling both physical and immune functions. This barrier plays a pivotal role in shielding the body from environmental risk factors such as allergens, pathogens, and pollutants. However, since the 19th century, the escalating threats posed by environmental pollution, global warming, heightened usage of industrial chemical products, and alterations in biodiversity have contributed to a noteworthy surge in allergic disease incidences. Notably, allergic diseases frequently exhibit dysfunction in the epithelial barrier. The proposed epithelial barrier hypothesis introduces a novel avenue for the prevention and treatment of allergic diseases. Despite increased attention to the role of barrier dysfunction in allergic disease development, numerous questions persist regarding the mechanisms underlying the disruption of normal barrier function. Consequently, this review aims to provide a comprehensive overview of the epithelial barrier's role in allergic diseases, encompassing influencing factors, assessment techniques, and repair methodologies. By doing so, it seeks to present innovative strategies for the prevention and treatment of allergic diseases.
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Affiliation(s)
- Hui-Fei Lu
- Department of Graduate and Scientific Research, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
- Department of Otolaryngology, Longgang Otolaryngology Hospital & Shenzhen Key Laboratory of Otolaryngology, Institute of Otolaryngology Shenzhen, Shenzhen, China
| | - Yi-Chi Zhou
- Department of Gastroenterology, Beijing University of Chinese Medicine Shenzhen Hospital (Longgang), Shenzhen, China
| | - Li-Tao Yang
- Clinical Laboratory Department of The Second Affiliated Hospital, School of Medicine, The Chinese University of Hong Kong, Shenzhen & Longgang District People’s Hospital of Shenzhen, Shenzhen, China
| | - Qian Zhou
- Department of Graduate and Scientific Research, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Xi-Jia Wang
- Department of Graduate and Scientific Research, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
- Department of Otolaryngology, Longgang Otolaryngology Hospital & Shenzhen Key Laboratory of Otolaryngology, Institute of Otolaryngology Shenzhen, Shenzhen, China
| | - Shu-Qi Qiu
- Department of Otolaryngology, Longgang Otolaryngology Hospital & Shenzhen Key Laboratory of Otolaryngology, Institute of Otolaryngology Shenzhen, Shenzhen, China
| | - Bao-Hui Cheng
- Department of Otolaryngology, Longgang Otolaryngology Hospital & Shenzhen Key Laboratory of Otolaryngology, Institute of Otolaryngology Shenzhen, Shenzhen, China
| | - Xian-Hai Zeng
- Department of Graduate and Scientific Research, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
- Department of Otolaryngology, Longgang Otolaryngology Hospital & Shenzhen Key Laboratory of Otolaryngology, Institute of Otolaryngology Shenzhen, Shenzhen, China
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15
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Berges AJ, Ospino R, Mafla L, Collins S, Chan-Li Y, Ghosh B, Sidhaye V, Lina I, Hillel AT. Dysfunctional Epithelial Barrier Is Characterized by Reduced E-Cadherin in Idiopathic Subglottic Stenosis. Laryngoscope 2024; 134:374-381. [PMID: 37565709 PMCID: PMC10842128 DOI: 10.1002/lary.30951] [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: 04/06/2023] [Revised: 07/11/2023] [Accepted: 07/18/2023] [Indexed: 08/12/2023]
Abstract
OBJECTIVES To aim of the study was to characterize the molecular profile and functional phenotype of idiopathic subglottic stenosis (iSGS)-scar epithelium. METHODS Human tracheal biopsies from iSGS scar (n = 6) and matched non-scar (n = 6) regions were analyzed using single-cell RNA sequencing (scRNA-seq). Separate specimens were used for epithelial cell expansion in vitro to assess average growth rate and functional capabilities using transepithelial-electrical resistance (TEER), fluorescein isothiocyanate-dextran flux permeability assay, ciliary coverage, and cilia beating frequency (CBF). Finally, epithelial tight junction protein expression of cultured cells was quantified using immunoblot assay (n = 4) and immunofluorescence (n = 6). RESULTS scRNA-seq analysis revealed a decrease in goblet, ciliated, and basal epithelial cells in the scar iSGS cohort. Furthermore, mRNA expression of proteins E-cadherin, claudin-3, claudin-10, occludin, TJP1, and TJP2 was also reduced (p < 0.001) in scar epithelium. Functional assays demonstrated a decrease in TEER (paired 95% confidence interval [CI], 195.68-890.83 Ω × cm2 , p < 0.05), an increase in permeability (paired 95% CI, -6116.00 to -1401.99 RFU, p < 0.05), and reduced epithelial coverage (paired 95% CI, 0.1814-1.766, fold change p < 0.05) in iSGS-scar epithelium relative to normal controls. No difference in growth rate (p < 0.05) or CBF was found (paired 95% CI, -2.118 to 3.820 Hz, p > 0.05). Immunoblot assay (paired 95% CI, 0.0367-0.605, p < 0.05) and immunofluorescence (paired 95% CI, 13.748-59.191 mean grey value, p < 0.05) revealed E-cadherin reduction in iSGS-scar epithelium. CONCLUSION iSGS-scar epithelium has a dysfunctional barrier and reduced structural protein expression. These results are consistent with dysfunctional epithelium seen in other airway pathology. Further studies are warranted to delineate the causality of epithelial dysfunction on the downstream fibroinflammatory cascade in iSGS. LEVEL OF EVIDENCE NA Laryngoscope, 134:374-381, 2024.
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Affiliation(s)
- Alexandra J. Berges
- Johns Hopkins Department of Otolaryngology-Head and Neck Surgery, 1800 Orleans Street, Baltimore, MD, 21287
| | - Rafael Ospino
- Johns Hopkins University School of Medicine, 1800 Orleans Street, Baltimore, MD, 21287
| | - Laura Mafla
- Johns Hopkins University School of Medicine, 1800 Orleans Street, Baltimore, MD, 21287
| | - Samuel Collins
- Johns Hopkins Department of Otolaryngology-Head and Neck Surgery, 1800 Orleans Street, Baltimore, MD, 21287
| | - Yee Chan-Li
- Johns Hopkins Department of Otolaryngology-Head and Neck Surgery, 1800 Orleans Street, Baltimore, MD, 21287
| | - Baishakhi Ghosh
- Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe Street, Baltimore, MD, 21205
| | - Venkataramana Sidhaye
- Johns Hopkins Division of Pulmonary and Critical Care Medicine, 1800 Orleans Street, Baltimore, MD, 21287
- Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe Street, Baltimore, MD, 21205
| | - Ioan Lina
- Johns Hopkins Department of Otolaryngology-Head and Neck Surgery, 1800 Orleans Street, Baltimore, MD, 21287
| | - Alexander T. Hillel
- Johns Hopkins Department of Otolaryngology-Head and Neck Surgery, 1800 Orleans Street, Baltimore, MD, 21287
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16
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Petpiroon N, Netkueakul W, Sukrak K, Wang C, Liang Y, Wang M, Liu Y, Li Q, Kamran R, Naruse K, Aueviriyavit S, Takahashi K. Development of lung tissue models and their applications. Life Sci 2023; 334:122208. [PMID: 37884207 DOI: 10.1016/j.lfs.2023.122208] [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: 06/18/2023] [Revised: 10/04/2023] [Accepted: 10/23/2023] [Indexed: 10/28/2023]
Abstract
The lungs are important organs that play a critical role in the development of specific diseases, as well as responding to the effects of drugs, chemicals, and environmental pollutants. Due to the ethical concerns around animal testing, alternative methods have been sought which are more time-effective, do not pose ethical issues for animals, do not involve species differences, and provide easy investigation of the pathobiology of lung diseases. Several national and international organizations are working to accelerate the development and implementation of structurally and functionally complex tissue models as alternatives to animal testing, particularly for the lung. Unfortunately, to date, there is no lung tissue model that has been accepted by regulatory agencies for use in inhalation toxicology. This review discusses the challenges involved in developing a relevant lung tissue model derived from human cells such as cell lines, primary cells, and pluripotent stem cells. It also introduces examples of two-dimensional (2D) air-liquid interface and monocultured and co-cultured three-dimensional (3D) culture techniques, particularly organoid culture and 3D bioprinting. Furthermore, it reviews development of the lung-on-a-chip model to mimic the microenvironment and physiological performance. The applications of lung tissue models in various studies, especially disease modeling, viral respiratory infection, and environmental toxicology will be also introduced. The development of a relevant lung tissue model is extremely important for standardizing and validation the in vitro models for inhalation toxicity and other studies in the future.
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Affiliation(s)
- Nalinrat Petpiroon
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Woranan Netkueakul
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Kanokwan Sukrak
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand; Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Thailand Network Center on Air Quality Management: TAQM, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chen Wang
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ward, Okayama 700-8558, Japan
| | - Yin Liang
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ward, Okayama 700-8558, Japan
| | - Mengxue Wang
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ward, Okayama 700-8558, Japan
| | - Yun Liu
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ward, Okayama 700-8558, Japan
| | - Qiang Li
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ward, Okayama 700-8558, Japan
| | - Rumaisa Kamran
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ward, Okayama 700-8558, Japan
| | - Keiji Naruse
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ward, Okayama 700-8558, Japan
| | - Sasitorn Aueviriyavit
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand.
| | - Ken Takahashi
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ward, Okayama 700-8558, Japan.
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17
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Wang E, Andrade MJ, Smith Q. Vascularized liver-on-a-chip model to investigate nicotine-induced dysfunction. BIOMICROFLUIDICS 2023; 17:064108. [PMID: 38155919 PMCID: PMC10754629 DOI: 10.1063/5.0172677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 11/29/2023] [Indexed: 12/30/2023]
Abstract
The development of physiologically relevant in vitro systems for simulating disease onset and progression and predicting drug metabolism holds tremendous value in reducing drug discovery time and cost. However, many of these platforms lack accuracy in replicating the tissue architecture and multicellular interactions. By leveraging three-dimensional cell culture, biomimetic soft hydrogels, and engineered stimuli, in vitro models have continued to progress. Nonetheless, the incorporation of the microvasculature has been met with many challenges, specifically with the addition of parenchymal cell types. Here, a systematic approach to investigating the initial seeding density of endothelial cells and its effects on interconnected networks was taken and combined with hepatic spheroids to form a liver-on-a-chip model. Leveraging this system, nicotine's effects on microvasculature and hepatic function were investigated. The findings indicated that nicotine led to interrupted adherens junctions, decreased guanosine triphosphate cyclohydrolase 1 expression, impaired angiogenesis, and lowered barrier function, all key factors in endothelial dysfunction. With the combination of the optimized microvascular networks, a vascularized liver-on-a-chip was formed, providing functional xenobiotic metabolism and synthesis of both albumin and urea. This system provides insight into potential hepatotoxicity caused by various drugs and allows for assessing vascular dysfunction in a high throughput manner.
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Affiliation(s)
- Eric Wang
- Department of Chemical and Biomolecular Engineering, University of California Irvine, Irvine, California 92697, USA
| | - Melisa J. Andrade
- Department of Chemical and Biomolecular Engineering, University of California Irvine, Irvine, California 92697, USA
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18
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Swaby C, Yeung-Luk B, Thapa S, Nishida K, Wally A, Ghosh B, Niederkofler A, Luk S, Girgis M, Keller A, Cortez C, Ramaswamy S, Wilmsen K, Bouché L, Dell A, Drummond MB, Putcha N, Haslam SM, Mathias R, Hansel NN, Sheng J, Sidhaye V. Decreased fucosylation impacts epithelial integrity and increases risk for COPD. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.31.564805. [PMID: 37961411 PMCID: PMC10635007 DOI: 10.1101/2023.10.31.564805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
COPD causes significant morbidity and mortality worldwide. Epithelial damage is fundamental to disease pathogenesis, although the mechanisms driving disease remain undefined. Published evidence from a COPD cohort (SPIROMICS) and confirmed in a second cohort (COPDgene) demonstrate a polymorphism in Fucosyltransferese-2 (FUT2) is a trans-pQTL for E-cadherin, which is critical in COPD pathogenesis. We found by MALDI-TOF analysis that FUT2 increased terminal fucosylation of E-cadherin. Using atomic force microscopy, we found that FUT2-dependent fucosylation enhanced E-cadherin-E-cadherin bond strength, mediating the improvement in monolayer integrity. Tracheal epithelial cells from Fut2-/- mice have reduced epithelial integrity, which is recovered with reconstitution of Fut2. Overexpression of FUT2 in COPD derived epithelia rescues barrier function. Fut2-/- mice show increased susceptibility in an elastase model of disease developing both emphysema and fibrosis. We propose this is due to the role of FUT2 in proliferation and cell differentiation. Overexpression of FUT2 significantly increased proliferation. Loss of Fut2 results in accumulation of Spc+ cells suggesting a failure of alveolar type 2 cells to undergo transdifferentiation to alveolar type 1. Using a combination of population data, genetically manipulated mouse models, and patient-derived cells, we present a novel mechanism by which post-translational modifications modulate tissue pathology and serve as a proof of concept for the development of a disease-modifying target in COPD.
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Affiliation(s)
- Carter Swaby
- Department of Chemical and Biomolecular Engineering, Johns Hopkins Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland, 21218, USA
| | - Bonnie Yeung-Luk
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Shreeti Thapa
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, 21224, Maryland, USA
| | - Kristine Nishida
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, 21224, Maryland, USA
| | - Arabelis Wally
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, 21224, Maryland, USA
| | - Baishakhi Ghosh
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Austin Niederkofler
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Sean Luk
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Mirit Girgis
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Allison Keller
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Cecilia Cortez
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Sahana Ramaswamy
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Kai Wilmsen
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Laura Bouché
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
| | - Anne Dell
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
| | - M. Bradley Drummond
- Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina at Chapel Hill, Chapel Hill, 27514, USA
| | - Nirupama Putcha
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, 21224, Maryland, USA
| | - Stuart M. Haslam
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
| | - Rasika Mathias
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, 21224, Maryland, USA
| | - Nadia N. Hansel
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, 21224, Maryland, USA
| | - Jian Sheng
- Department of Engineering, Texas A&M University Corpus Christi, Corpus Christi, TX 78412, USA
| | - Venkataramana Sidhaye
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, 21224, Maryland, USA
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
- Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, Maryland, 21224, USA
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19
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Wang J, Wang Y, Wang P, Shen X, Wang L, He D. Construction and evaluation of a nomogram prediction model for aspiration pneumonia in patients with acute ischemic stroke. Heliyon 2023; 9:e22048. [PMID: 38034684 PMCID: PMC10682132 DOI: 10.1016/j.heliyon.2023.e22048] [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: 07/05/2023] [Revised: 11/02/2023] [Accepted: 11/02/2023] [Indexed: 12/02/2023] Open
Abstract
Background Aspiration Pneumonia (AP) is a leading cause of death in patients with Acute Ischemic Stroke (AIS). Early detection, diagnosis and effective prevention measures are crucial for improving patient prognosis. However, there is a lack of research predicting AP occurrence after AIS. This study aimed to identify risk factors and develop a nomogram model to determine the probability of developing AP after AIS. Method A total of 3258 AIS patients admitted to Jinshan Hospital of Fudan University between January 1, 2016, and August 20, 2022, were included. Among them, 307 patients were diagnosed with AP (AP group), while 2951 patients formed the control group (NAP group). Univariate and multivariate logistic regression analyses were conducted to identify relevant risk factors for AP after AIS. These factors were used to establish a scoring system and develop a nomogram model using R software. Results Univariate analysis revealed 20 factors significantly associated (P < 0.05) with the development of AP after AIS. These factors underwent multivariate logistic regression analysis, which identified age (elderly), National Institute of Health Stroke Scale (NIHSS) score, dysphagia, atrial fibrillation, cardiac insufficiency, renal insufficiency, hepatic insufficiency, elevated Fasting Blood Glucose (FBG), elevated C-Reactive Protein (CRP), elevated Neutrophil percentage (NEUT%), and decreased prealbumin as independent risk factors. A nomogram model incorporating these 11 risk factors was constructed, with a C-index of 0.872 (95 % CI: 0.845-0.899), indicating high accuracy. Calibration and clinical decision analyses demonstrated the model's reliability and clinical value. Conclusion A nomogram model incorporating age, NIHSS score, dysphagia, atrial fibrillation, cardiac insufficiency, renal insufficiency, hepatic insufficiency, FBG, CRP, NEUT%, and prealbumin effectively predicts AP risk in AIS patients. This model provides guidance for early intervention strategies, enabling the identification of high-risk individuals for timely preventive measures.
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Affiliation(s)
- Junming Wang
- Center of Emergency and Critical Care Medicine, Jinshan Hospital, Fudan University, Shanghai, 201508, China
- Research Center for Chemical Injury, Emergency and Critical Medicine of Fudan University, Shanghai, 201508, China
- Key Laboratory of Chemical Injury, Emergency and Critical Medicine of Shanghai Municipal Health Commission, Shanghai, 201508, China
| | - Yuntao Wang
- Department of General Practice, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Pengfei Wang
- Center of Emergency and Critical Care Medicine, Jinshan Hospital, Fudan University, Shanghai, 201508, China
- Research Center for Chemical Injury, Emergency and Critical Medicine of Fudan University, Shanghai, 201508, China
- Key Laboratory of Chemical Injury, Emergency and Critical Medicine of Shanghai Municipal Health Commission, Shanghai, 201508, China
| | - Xueting Shen
- Department of General Practice, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Lina Wang
- Department of General Practice, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Daikun He
- Department of General Practice, Jinshan Hospital, Fudan University, Shanghai, 201508, China
- Department of General Practice, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Center of Emergency and Critical Care Medicine, Jinshan Hospital, Fudan University, Shanghai, 201508, China
- Research Center for Chemical Injury, Emergency and Critical Medicine of Fudan University, Shanghai, 201508, China
- Key Laboratory of Chemical Injury, Emergency and Critical Medicine of Shanghai Municipal Health Commission, Shanghai, 201508, China
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20
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Guo J, Meng X, Zheng YM, Zhao SK, Qiang C, Zhou LB. Cigarette Smoke Mediates Nasal Epithelial Barrier Dysfunction via TNF-α. Am J Rhinol Allergy 2023; 37:646-655. [PMID: 37424240 DOI: 10.1177/19458924231184741] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
BACKGROUND Extensive data suggest that exposure to cigarette smoke can induce pulmonary epithelial barrier dysfunction. However, the effects of cigarette smoke on the nasal epithelial barrier are still unclear. Here, we investigated the consequence and mechanism of cigarette smoke on the nasal epithelial barrier. METHODS Sprague Dawley rats were exposed to cigarette smoke for 3 or 6 months, and changes in inflammatory markers and nasal barrier function were evaluated. Moreover, underlying mechanisms were explored. Finally, normal human bronchial epithelial cells were cultured with or without tumor necrosis factor-alpha (TNF-α) in vitro, and the levels of continuity and tight junction-associated proteins were measured. RESULTS In vivo experiments showed that the nasal mucosal barrier function of rats exposed to cigarette smoke was disturbed. Indeed, proteins associated with tight junctions were decreased, and the levels of inflammatory factors, such as IL-8, IL-6, and TNF-α, were dramatically increased in comparison to those of control animals. In vitro, TNF-α was shown to disrupt the continuity of proteins associated with tight junctions and to downregulate the expression of these proteins in bronchial epithelial cells. CONCLUSIONS We found that cigarette smoke disrupted the nasal mucosal barrier, and the extent of the damage was correlated with the duration of cigarette smoke exposure. We showed that TNF-α can disrupt the continuity and attenuate the expression of tight junction proteins in human bronchial epithelial cells. Therefore, cigarette smoke may induce nasal epithelial barrier dysfunction through TNF-α.
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Affiliation(s)
- Ju Guo
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xuan Meng
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yao-Ming Zheng
- ENT Institute and Department of Otorhinolaryngology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Shan-Kun Zhao
- Department of Urology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Chen Qiang
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Li-Bo Zhou
- The First Affiliated Hospital of Nanchang University, Nanchang, China
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21
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Ghosn B, Onvani S, Ardestani ME, Feizi A, Azadbakht L, Esmaillzadeh A. The association between diet quality and chronic obstructive pulmonary disease: a case-control study. BMC Public Health 2023; 23:2071. [PMID: 37872531 PMCID: PMC10591368 DOI: 10.1186/s12889-023-16586-8] [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: 02/04/2023] [Accepted: 08/22/2023] [Indexed: 10/25/2023] Open
Abstract
BACKGROUND Previous investigations have primarily examined the relationship between various dietary patterns and the risk of chronic obstructive pulmonary disease (COPD); however, there have been limited studies that have evaluated the association between diet quality presented by Healthy Eating Index 2010 (HEI-2010) and COPD. The aim of this study was to investigate this association in Iranian population. METHODS This case-control study recruited 84 cases and 252 healthy controls who were randomly selected. Diet, smoking, and physical activity were assessed using validated questionnaires. The HEI-2010 score ranged from zero to hundred twenty, with zero indicating an unhealthy diet and hundred twenty indicating a healthy diet. Logistic regression models were utilized to analyze the association between HEI-2010 and the odds of COPD. RESULTS Results from logistic regression showed that individuals with higher HEI scores had a significantly lower odds of COPD (OR: 0.34; 95% CI: 0.16-0.72). After adjusting for confounders, individuals with the highest HEI score were 82% less likely to have COPD (OR: 0.18; 95% CI: 0.03-0.96). This association remained significant after adjusting for smoking and physical activity (OR: 0.08; 95% CI: 0.01-0.93) and with additional adjustment for BMI (OR: 0.08; 95% CI: 0.01-0.92). CONCLUSIONS This study found a significant association between a higher HEI-2010 score and a lower odd of COPD in the Iranian population. These results suggest that a healthy diet may play a crucial role in reducing the odds of COPD and in improving the function of the lungs. However, further prospective studies are warranted to elucidate this relationship.
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Affiliation(s)
- Batoul Ghosn
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, P.O. Box 14155-6117, Tehran, Iran
| | - Shokouh Onvani
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Emami Ardestani
- Department of Internal Medicine, Division of Pulmonology), School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Awat Feizi
- Department of Epidemiology and Biostatistics, Endocrinology and Metabolism Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Leila Azadbakht
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, P.O. Box 14155-6117, Tehran, Iran
| | - Ahmad Esmaillzadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, P.O. Box 14155-6117, Tehran, Iran.
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Molecular- Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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22
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Pat Y, Ogulur I, Yazici D, Mitamura Y, Cevhertas L, Küçükkase OC, Mesisser SS, Akdis M, Nadeau K, Akdis CA. Effect of altered human exposome on the skin and mucosal epithelial barrier integrity. Tissue Barriers 2023; 11:2133877. [PMID: 36262078 PMCID: PMC10606824 DOI: 10.1080/21688370.2022.2133877] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/23/2022] [Accepted: 08/27/2022] [Indexed: 10/24/2022] Open
Abstract
Pollution in the world and exposure of humans and nature to toxic substances is continuously worsening at a rapid pace. In the last 60 years, human and domestic animal health has been challenged by continuous exposure to toxic substances and pollutants because of uncontrolled growth, modernization, and industrialization. More than 350,000 new chemicals have been introduced to our lives, mostly without any reasonable control of their health effects and toxicity. A plethora of studies show exposure to these harmful substances during this period with their implications on the skin and mucosal epithelial barrier and increasing prevalence of allergic and autoimmune diseases in the context of the "epithelial barrier hypothesis". Exposure to these substances causes an epithelial injury with peri-epithelial inflammation, microbial dysbiosis and bacterial translocation to sub-epithelial areas, and immune response to dysbiotic bacteria. Here, we provide scientific evidence on the altered human exposome and its impact on epithelial barriers.
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Affiliation(s)
- Yagiz Pat
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
- Department of Medical Microbiology, Faculty of Medicine, Aydin Menderes University, Turkey
| | - Ismail Ogulur
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Duygu Yazici
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Yasutaka Mitamura
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Lacin Cevhertas
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
- Department of Medical Immunology, Institute of Health Sciences, Bursa Uludag University, Turkey
| | - Ozan C Küçükkase
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Sanne S Mesisser
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Kari Nadeau
- Sean N. Parker Center for Allergy and Asthma Research, Stanford University and Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford University, Stanford, CA, USA
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Stanford University, Stanford, CA, USA
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
- Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
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Li W, Yan J, Xu J, Zhu L, Zhai C, Wang Y, Wang Y, Feng Y, Cao H. Vardenafil alleviates cigarette smoke-induced chronic obstructive pulmonary disease by activating autophagy via the AMPK/mTOR signalling pathway: an in vitro and in vivo study. In Vitro Cell Dev Biol Anim 2023; 59:717-728. [PMID: 37957534 DOI: 10.1007/s11626-023-00820-z] [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: 09/06/2023] [Accepted: 10/14/2023] [Indexed: 11/15/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) has always attracted global attention with its high prevalence, incidence rate, and mortality. Exposure to cigarette smoke is one of main causes of COPD. Therefore, it is still necessary to study its pathogenesis and find new therapeutic strategies for early COPD prevention and treatment. Vardenafil, a type 5 phosphodiesterase (PDE5) inhibitor, is known to have an efficient therapy in some cardiovascular, pulmonary, and vascular diseases, which is an important mechanism for COPD. However, it still loss relevant research on whether vardenafil is effective in COPD and its mechanism. In this study, the cigarette smoke inhalation was performed to establish cigarette smoke-induced COPD model using C57BL/6 mice and 16HBE cells were treated with cigarette smoke extract (CSE). Mice were treated with vardenafil for 30 d. Then condition of lung injury was evaluated using histological analysis. The content of cytokines and the number of inflammatory cells in lung tissues or bronchoalveolar lavage fluid were measured. Additionally, western blot analysis was employed to evaluate the activation of adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK)/mechanistic target of rapamycin (mTOR)-mediated autophagy in vitro. The results showed that vardenafil abolished CSE's effect by activating autophagy via the AMPK/mTOR signalling pathway in vitro. Vardenafil attenuated cigarette smoke-induced lung injury and inflammation response by activating autophagy via the AMPK/mTOR signalling pathway in vivo. These results provide valuable insights into the molecular mechanisms underlying vardenafil's beneficial effects in cigarette smoke-induced COPD treatment. In conclusion, vardenafil alleviates cigarette smoke-induced experimental COPD by activating autophagy via the AMPK/mTOR signalling pathway.
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Affiliation(s)
- Weihao Li
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China
| | - Jingxia Yan
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China
| | - Jing Xu
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China
| | - Liqin Zhu
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China
| | - Cuijuan Zhai
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China
| | - Yajuan Wang
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China
| | - Yuxin Wang
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China
| | - Ying Feng
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China.
| | - Huifang Cao
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai, Huashan Hospital Fudan University, Jing'an Branch, No. 259, XiKang Road, Jing'an District, Shanghai, 200040, China.
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24
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Marín-Palma D, Fernandez GJ, Ruiz-Saenz J, Taborda NA, Rugeles MT, Hernandez JC. Particulate matter impairs immune system function by up-regulating inflammatory pathways and decreasing pathogen response gene expression. Sci Rep 2023; 13:12773. [PMID: 37550362 PMCID: PMC10406897 DOI: 10.1038/s41598-023-39921-w] [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: 02/28/2023] [Accepted: 08/02/2023] [Indexed: 08/09/2023] Open
Abstract
Airborne particulate matter produced by industrial sources and automobiles has been linked to increased susceptibility to infectious diseases and it is known to be recognized by cells of the immune system. The molecular mechanisms and changes in gene expression profiles induced in immune cells by PM have not been fully mapped out or systematically integrated. Here, we use RNA-seq to analyze mRNA profiles of human peripheral blood mononuclear cells after exposure to coarse particulate matter (PM10). Our analyses showed that PM10 was able to reprogram the expression of 1,196 genes in immune cells, including activation of a proinflammatory state with an increase in cytokines and chemokines. Activation of the IL-36 signaling pathway and upregulation of chemokines involved in neutrophil and monocyte recruitment suggest mechanisms for inflammation upon PM exposure, while NK cell-recruiting chemokines are repressed. PM exposure also increases transcription factors associated with inflammatory pathways (e.g., JUN, RELB, NFKB2, etc.) and reduces expression of RNases and pathogen response genes CAMP, DEFAs, AZU1, APOBEC3A and LYZ. Our analysis across gene regulatory and signaling pathways suggests that PM plays a role in the dysregulation of immune cell functions, relevant for antiviral responses and general host defense against pathogens.
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Affiliation(s)
- Damariz Marín-Palma
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Geysson Javier Fernandez
- Grupo Biología y Control de Enfermedades Infecciosas BCEI, Universidad de Antioquia-UdeA, Medellín, Colombia
| | - Julian Ruiz-Saenz
- Grupo de Investigación en Ciencias Animales GRICA, Universidad Cooperativa de Colombia, Bucaramanga, Colombia
| | - Natalia A Taborda
- Grupo de Investigaciones Biomédicas Uniremington, Programa de Medicina, Facultad de Ciencias de La Salud, Corporación Universitaria Remington, Medellín, Colombia
- Universidad Cooperativa de Colombia, Campus Medellín-Envigado, Medellín, Colombia
| | - Maria T Rugeles
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Juan C Hernandez
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia.
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Huang ZQ, Ye J, Liu J, Sun LY, Ong HH, Wei YH, Fu SC, Hu XX, Xu Y, Wang DY. Predictive Significance of Claudin-3 for Epithelial Barrier Dysfunction in Chronic Rhinosinusitis With Nasal Polyps. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2023; 15:512-525. [PMID: 37153980 PMCID: PMC10359644 DOI: 10.4168/aair.2023.15.4.512] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 01/10/2023] [Accepted: 01/30/2023] [Indexed: 07/21/2023]
Abstract
PURPOSE The abnormal expression of tight junction (TJ) plays a vital role in the pathogenesis of chronic rhinosinusitis with nasal polyps (CRSwNP). However, there is no appropriate tool to distinguish and diagnose epithelial barrier defects in clinical practice. This study aimed to evaluate the predictive value of claudin-3 for epithelial barrier dysfunction in CRSwNP. METHODS In this study, TJ protein levels were evaluated by real-time quantitative polymerase chain reaction, immunofluorescent, and immunohistochemistry staining in control subjects and CRSwNP patients. The receiver operating characteristic (ROC) curve was created to assess the predictive value of TJ breakdown in clinical outcomes. In vitro, human nasal epithelial cells were cultured at the air-liquid interface to analyze the transepithelial electrical resistance (TER) level. RESULTS The expression levels of occludin, tricellulin, claudin-3, and claudin-10 were decreased (all P < 0.05), and those of claudin-1 was increased (P < 0.05) in CRSwNP patients as compared to healthy subjects. Additionally, claudin-3 and occludin levels were negatively correlated with the computed tomography score in CRSwNP (all P < 0.05), and the ROC curve indicated that the claudin-3 level had the most predictive accuracy in evaluating epithelial barrier disruption (area under the curve = 0.791, P < 0.001). Finally, the time-series analysis showed the highest correlation coefficient between TER and claudin-3 (cross-correlation function = 0.75). CONCLUSION In this study, we suggest that claudin-3 could be a valuable biomarker for predicting nasal epithelial barrier defects and disease severity in CRSwNP.
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Affiliation(s)
- Zhi-Qun Huang
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
- Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore
| | - Jing Ye
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jing Liu
- Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore
| | - Li-Ying Sun
- First School of Clinical Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hsiao Hui Ong
- Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore
| | - Yong-Hao Wei
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - Shu-Cai Fu
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - Xiao-Xun Hu
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - Yu Xu
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China.
| | - De-Yun Wang
- Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore.
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Ricciardolo FLM, Guida G, Bertolini F, Di Stefano A, Carriero V. Phenotype overlap in the natural history of asthma. Eur Respir Rev 2023; 32:32/168/220201. [PMID: 37197769 DOI: 10.1183/16000617.0201-2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 03/23/2023] [Indexed: 05/19/2023] Open
Abstract
The heterogeneity of asthma makes it challenging to unravel the pathophysiologic mechanisms of the disease. Despite the wealth of research identifying diverse phenotypes, many gaps still remain in our knowledge of the disease's complexity. A crucial aspect is the impact of airborne factors over a lifetime, which often results in a complex overlap of phenotypes associated with type 2 (T2), non-T2 and mixed inflammation. Evidence now shows overlaps between the phenotypes associated with T2, non-T2 and mixed T2/non-T2 inflammation. These interconnections could be induced by different determinants such as recurrent infections, environmental factors, T-helper plasticity and comorbidities, collectively resulting in a complex network of distinct pathways generally considered as mutually exclusive. In this scenario, we need to abandon the concept of asthma as a disease characterised by distinct traits grouped into static segregated categories. It is now evident that there are multiple interplays between the various physiologic, cellular and molecular features of asthma, and the overlap of phenotypes cannot be ignored.
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Affiliation(s)
- Fabio L M Ricciardolo
- Department of Clinical and Biological Sciences, Severe Asthma and Rare Lung Disease Unit, San Luigi Gonzaga University Hospital, University of Turin, Turin, Italy
- Institute of Translational Pharmacology, National Research Council (IFT-CNR), section of Palermo, Palermo, Italy
| | - Giuseppe Guida
- Department of Clinical and Biological Sciences, Severe Asthma and Rare Lung Disease Unit, San Luigi Gonzaga University Hospital, University of Turin, Turin, Italy
| | - Francesca Bertolini
- Department of Clinical and Biological Sciences, Severe Asthma and Rare Lung Disease Unit, San Luigi Gonzaga University Hospital, University of Turin, Turin, Italy
| | - Antonino Di Stefano
- Department of Pneumology and Laboratory of Cytoimmunopathology of the Heart and Lung, Istituti Clinici Scientifici Maugeri SpA, IRCCS, Novara, Italy
| | - Vitina Carriero
- Department of Clinical and Biological Sciences, Severe Asthma and Rare Lung Disease Unit, San Luigi Gonzaga University Hospital, University of Turin, Turin, Italy
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Chang C, He F, Ao M, Chen J, Yu T, Li W, Li B, Fang M, Yang T. Inhibition of Nur77 expression and translocation by compound B6 reduces ER stress and alleviates cigarette smoke-induced inflammation and injury in bronchial epithelial cells. Front Pharmacol 2023; 14:1200110. [PMID: 37405051 PMCID: PMC10315657 DOI: 10.3389/fphar.2023.1200110] [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: 04/04/2023] [Accepted: 05/26/2023] [Indexed: 07/06/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a leading cause of death worldwide with inflammation and injury in airway epithelial cells. However, few treatment options effectively reduce severity. We previously found that Nur77 is involved in lipopolysaccharide-induced inflammation and injury of lung tissue. Here, we established an in vitro model of COPD-related inflammation and injury in 16-HBE cells induced by cigarette smoke extract (CSE). In these cells, Nur77 expression and localization to the endoplasmic reticulum (ER) increased following CSE treatment, as did ER stress marker (BIP, ATF4, CHOP) expression, inflammatory cytokine expression, and apoptosis. The flavonoid derivative, named B6, which was shown to be a modulator of Nur77 in previous screen, molecular dynamics simulation revealed that B6 binds strongly to Nur77 through hydrogen bonding and hydrophobic interactions. Treating CSE-stimulated 16-HBE cells with B6 resulted in a reduction of both inflammatory cytokine expression and secretion, as well as attenuated apoptosis. Furthermore, B6 treatment resulted in a decrease in Nur77 expression and translocation to the ER, which was accompanied by a concentration-dependent reduction in the expression of ER stress markers. Meanwhile, B6 played a similar role in CSE-treated BEAS-2B cells. These combined effects suggest that B6 could inhibit inflammation and apoptosis in airway epithelial cells after cigarette smoke stimulation, and support its further development as a candidate intervention for treating COPD-related airway inflammation.
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Affiliation(s)
- Chenli Chang
- China-Japan Friendship Hospital, Center of Respiratory Medicine, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Fengming He
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Mingtao Ao
- College of Pharmacy, Hubei University of Science and Technology, Xianning, China
| | - Jun Chen
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Tao Yu
- China-Japan Friendship Hospital, Center of Respiratory Medicine, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Weiyu Li
- China-Japan Friendship Hospital, Center of Respiratory Medicine, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Baicun Li
- China-Japan Friendship Hospital, Center of Respiratory Medicine, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Meijuan Fang
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Ting Yang
- China-Japan Friendship Hospital, Center of Respiratory Medicine, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, China
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28
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Usman Khan M, Cai X, Shen Z, Mekonnen T, Kourmatzis A, Cheng S, Gholizadeh H. Challenges in the Development and Application of Organ-on-Chips for Intranasal Drug Delivery Studies. Pharmaceutics 2023; 15:pharmaceutics15051557. [PMID: 37242799 DOI: 10.3390/pharmaceutics15051557] [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: 04/10/2023] [Revised: 05/12/2023] [Accepted: 05/14/2023] [Indexed: 05/28/2023] Open
Abstract
With the growing demand for the development of intranasal (IN) products, such as nasal vaccines, which has been especially highlighted during the COVID-19 pandemic, the lack of novel technologies to accurately test the safety and effectiveness of IN products in vitro so that they can be delivered promptly to the market is critically acknowledged. There have been attempts to manufacture anatomically relevant 3D replicas of the human nasal cavity for in vitro IN drug tests, and a couple of organ-on-chip (OoC) models, which mimic some key features of the nasal mucosa, have been proposed. However, these models are still in their infancy, and have not completely recapitulated the critical characteristics of the human nasal mucosa, including its biological interactions with other organs, to provide a reliable platform for preclinical IN drug tests. While the promising potential of OoCs for drug testing and development is being extensively investigated in recent research, the applicability of this technology for IN drug tests has barely been explored. This review aims to highlight the importance of using OoC models for in vitro IN drug tests and their potential applications in IN drug development by covering the background information on the wide usage of IN drugs and their common side effects where some classical examples of each area are pointed out. Specifically, this review focuses on the major challenges of developing advanced OoC technology and discusses the need to mimic the physiological and anatomical features of the nasal cavity and nasal mucosa, the performance of relevant drug safety assays, as well as the fabrication and operational aspects, with the ultimate goal to highlight the much-needed consensus, to converge the effort of the research community in this area of work.
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Affiliation(s)
| | - Xinyu Cai
- School of Engineering, Macquarie University, Sydney, NSW 2113, Australia
| | - Zhiwei Shen
- School of Engineering, Macquarie University, Sydney, NSW 2113, Australia
| | - Taye Mekonnen
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Agisilaos Kourmatzis
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Shaokoon Cheng
- School of Engineering, Macquarie University, Sydney, NSW 2113, Australia
| | - Hanieh Gholizadeh
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
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DiGuilio KM, Rybakovsky E, Baek Y, Valenzano MC, Mullin JM. The multiphasic TNF-α-induced compromise of Calu-3 airway epithelial barrier function. Exp Lung Res 2023; 49:72-85. [PMID: 37000123 DOI: 10.1080/01902148.2023.2193637] [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: 09/09/2022] [Accepted: 03/09/2023] [Indexed: 04/01/2023]
Abstract
Purpose: Airway epithelial barrier leak and the involvement of proinflammatory cytokines play a key role in a variety of diseases. This study evaluates barrier compromise by the inflammatory mediator Tumor Necrosis Factor-α (TNF-α) in the human airway epithelial Calu-3 model. Methods: We examined the effects of TNF-α on barrier function in Calu-3 cell layers using Transepithelial Electrical Resistance (TER) and transepithelial diffusion of radiolabeled probe molecules. Western immunoblot analyses of tight junctional (TJ) proteins in detergent soluble fractions were performed. Results: TNF-α dramatically reduced TER and increased paracellular permeability of both 14C-D-mannitol and the larger 5 kDa probe, 14C-inulin. A time course of the effects shows two separate actions on barrier function. An initial compromise of barrier function occurs 2-4 hours after TNF-α exposure, followed by complete recovery of barrier function by 24 hrs. Beginning 48 hrs. post-exposure, a second more sustained barrier compromise ensues, in which leakiness persists through 144 hrs. There were no changes in TJ proteins observed at 3 hrs. post exposure, but significant increases in claudins-2, -3, -4, and -5, as well as a decrease in occludin were seen at 72 hrs. post TNF-α exposure. Both the 2-4 hr. and the 72 hr. TNF-α induced leaks are shown to be mediated by the ERK signaling pathway. Conclusion: TNF-α induced a multiphasic transepithelial leak in Calu-3 cell layers that was shown to be ERK mediated, as well as involve changes in the TJ complex. The micronutrients, retinoic acid and calcitriol, were effective at reducing this barrier compromise caused by TNF-α. The significance of these results for airway disease and for COVID-19 specifically are discussed.
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Affiliation(s)
| | | | - Yoongyeong Baek
- Department of Chemistry, Drexel University, Philadelphia, PA, USA
| | | | - James M Mullin
- Lankenau Institute for Medical Research, Wynnewood, PA, USA
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30
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Song Y, Fu W, Zhang Y, Huang D, Wu J, Tong S, Zhong M, Cao H, Wang B. Azithromycin ameliorated cigarette smoke-induced airway epithelial barrier dysfunction by activating Nrf2/GCL/GSH signaling pathway. Respir Res 2023; 24:69. [PMID: 36879222 PMCID: PMC9990325 DOI: 10.1186/s12931-023-02375-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/22/2023] [Indexed: 03/08/2023] Open
Abstract
BACKGROUND Airway epithelium is the first barrier against environmental insults, and epithelial barrier dysfunction caused by cigarette smoke (CS) is particularly relevant to chronic obstructive pulmonary disease (COPD) progression. Our study was to determine whether Azithromycin (AZI) ameliorates CS-induced airway epithelial barrier dysfunction and the underlying mechanisms. METHODS Primary bronchial epithelial cells (PBECs), human bronchial epithelial cells (HBECs), Sprague Dawley rats and nuclear factor erythroid 2-related factor 2 (Nrf2)-/- mice were pretreated with AZI and subsequently exposed to CS. Transepithelial electronic resistance (TEER), junction proteins as well as pro-inflammatory cytokines and apoptosis markers were examined to assess epithelial barrier dysfunction. Metabolomics study was applied to explore the underlying mechanism of AZI. RESULTS CS-induced TEER decline and intercellular junction destruction, accompanied with inflammatory response and cell apoptosis in PBECs were restored by AZI dose-dependently, which were also observed in CS-exposed rats. Mechanistically, GSH metabolism pathway was identified as the top differentially impacted pathway and AZI treatment upregulated the activities of glutamate cysteine ligase (GCL) and the contents of metabolites in GSH metabolic pathway. Furthermore, AZI apparently reversed CS-induced Nrf2 suppression, and similar effects on airway epithelial barrier dysfunction were also found for Nrf2 agonist tert-butylhydroquinone and vitamin C. Finally, deletion of Nrf2 in both HBECs and C57BL/6N mice aggravated CS-induced GSH metabolism imbalance to disrupt airway epithelial barrier and partially deprived the effects of AZI. CONCLUSION These findings suggest that the clinical benefits of AZI for COPD management are related with the protection of CS-induced airway epithelial barrier dysfunction via activating Nrf2/GCL/GSH pathway, providing potential therapeutic strategies for COPD.
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Affiliation(s)
- Yun Song
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Wenhuan Fu
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Youzhi Zhang
- Department of Respiration, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Doudou Huang
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Jian Wu
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Shuangmei Tong
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Mingkang Zhong
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, 200040, China.
| | - Huifang Cao
- Department of Respiratory and Critical Medicine, Jing'an District Centre Hospital of Shanghai (Huashan Hospital Fudan University Jing'an Branch), Shanghai, 200040, China.
| | - Bin Wang
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, 200040, China.
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31
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Singh S, Dutta J, Ray A, Karmakar A, Mabalirajan U. Airway Epithelium: A Neglected but Crucial Cell Type in Asthma Pathobiology. Diagnostics (Basel) 2023; 13:diagnostics13040808. [PMID: 36832296 PMCID: PMC9955099 DOI: 10.3390/diagnostics13040808] [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: 01/19/2023] [Revised: 02/13/2023] [Accepted: 02/18/2023] [Indexed: 02/23/2023] Open
Abstract
The features of allergic asthma are believed to be mediated mostly through the Th2 immune response. In this Th2-dominant concept, the airway epithelium is presented as the helpless victim of Th2 cytokines. However, this Th2-dominant concept is inadequate to fill some of the vital knowledge gaps in asthma pathogenesis, like the poor correlation between airway inflammation and airway remodeling and severe asthma endotypes, including Th2-low asthma, therapy resistance, etc. Since the discovery of type 2 innate lymphoid cells in 2010, asthma researchers started believing in that the airway epithelium played a crucial role, as alarmins, which are the inducers of ILC2, are almost exclusively secreted by the airway epithelium. This underscores the eminence of airway epithelium in asthma pathogenesis. However, the airway epithelium has a bipartite functionality in sustaining healthy lung homeostasis and asthmatic lungs. On the one hand, the airway epithelium maintains lung homeostasis against environmental irritants/pollutants with the aid of its various armamentaria, including its chemosensory apparatus and detoxification system. Alternatively, it induces an ILC2-mediated type 2 immune response through alarmins to amplify the inflammatory response. However, the available evidence indicates that restoring epithelial health may attenuate asthmatic features. Thus, we conjecture that an epithelium-driven concept in asthma pathogenesis could fill most of the gaps in current asthma knowledge, and the incorporation of epithelial-protective agents to enhance the robustness of the epithelial barrier and the combative capacity of the airway epithelium against exogenous irritants/allergens may mitigate asthma incidence and severity, resulting in better asthma control.
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Affiliation(s)
- Sabita Singh
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB), Kolkata 700091, West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), Sector-19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India
| | - Joytri Dutta
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB), Kolkata 700091, West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), Sector-19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India
| | - Archita Ray
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB), Kolkata 700091, West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), Sector-19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India
| | - Atmaja Karmakar
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB), Kolkata 700091, West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), Sector-19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India
| | - Ulaganathan Mabalirajan
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB), Kolkata 700091, West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), Sector-19, Kamla Nehru Nagar, Ghaziabad 201002, Uttar Pradesh, India
- Correspondence:
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Kayongo A, Robertson NM, Siddharthan T, Ntayi ML, Ndawula JC, Sande OJ, Bagaya BS, Kirenga B, Mayanja-Kizza H, Joloba ML, Forslund SK. Airway microbiome-immune crosstalk in chronic obstructive pulmonary disease. Front Immunol 2023; 13:1085551. [PMID: 36741369 PMCID: PMC9890194 DOI: 10.3389/fimmu.2022.1085551] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/28/2022] [Indexed: 01/19/2023] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) has significantly contributed to global mortality, with three million deaths reported annually. This impact is expected to increase over the next 40 years, with approximately 5 million people predicted to succumb to COPD-related deaths annually. Immune mechanisms driving disease progression have not been fully elucidated. Airway microbiota have been implicated. However, it is still unclear how changes in the airway microbiome drive persistent immune activation and consequent lung damage. Mechanisms mediating microbiome-immune crosstalk in the airways remain unclear. In this review, we examine how dysbiosis mediates airway inflammation in COPD. We give a detailed account of how airway commensal bacteria interact with the mucosal innate and adaptive immune system to regulate immune responses in healthy or diseased airways. Immune-phenotyping airway microbiota could advance COPD immunotherapeutics and identify key open questions that future research must address to further such translation.
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Affiliation(s)
- Alex Kayongo
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda,Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Medicine, Center for Emerging Pathogens, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, NJ, United States
| | | | - Trishul Siddharthan
- Division of Pulmonary Medicine, School of Medicine, University of Miami, Miami, FL, United States
| | - Moses Levi Ntayi
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda,Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Josephine Caren Ndawula
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Obondo J. Sande
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Bernard S. Bagaya
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Bruce Kirenga
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Harriet Mayanja-Kizza
- Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Moses L. Joloba
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Sofia K. Forslund
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany,Experimental and Clinical Research Center, a cooperation of Charité - Universitatsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Berlin, Germany,Charité-Universitatsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany,Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany,*Correspondence: Sofia K. Forslund,
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Ding K, Jiang W, Zhan W, Xiong C, Chen J, Wang Y, Jia H, Lei M. The therapeutic potential of quercetin for cigarette smoking-induced chronic obstructive pulmonary disease: a narrative review. Ther Adv Respir Dis 2023; 17:17534666231170800. [PMID: 37154390 PMCID: PMC10170608 DOI: 10.1177/17534666231170800] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
Quercetin is a flavonoid with antioxidant and anti-inflammatory properties. Quercetin has potentially beneficial therapeutic effects for several diseases, including cigarette smoking-induced chronic obstructive pulmonary disease (CS-COPD). Many studies have shown that quercetin's antioxidant and anti-inflammatory properties have positive therapeutic potential for CS-COPD. In addition, quercetin's immunomodulatory, anti-cellular senescence, mitochondrial autophagy-modulating, and gut microbiota-modulating effects may also have therapeutic value for CS-COPD. However, there appears to be no review of the possible mechanisms of quercetin for treating CS-COPD. Moreover, the combination of quercetin with common therapeutic drugs for CS-COPD needs further refinement. Therefore, in this article, after introducing the definition and metabolism of quercetin, and its safety, we comprehensively presented the pathogenesis of CS-COPD related to oxidative stress, inflammation, immunity, cellular senescence, mitochondrial autophagy, and gut microbiota. We then reviewed quercetin's anti-CS-COPD effects, performed by influencing these mechanisms. Finally, we explored the possibility of using quercetin with commonly used drugs for treating CS-COPD, providing a basis for future screening of excellent drug combinations for treating CS-COPD. This review has provided meaningful information on quercetin's mechanisms and clinical use in treating CS-COPD.
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Affiliation(s)
- Kaixi Ding
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wei Jiang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wenling Zhan
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chunping Xiong
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jieling Chen
- Shehong Hospital of Traditional Chinese Medicine, Shehong, China
| | - Yu Wang
- Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Huanan Jia
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Ming Lei
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
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Shaikh SB, Gouda MM, Khandhal I, Rahman T, Shetty A, Bhandary YP. Alterations in mRNA Expression Levels of Tight Junction Proteins in the Blood Cells of Smokers with or without COPD. Endocr Metab Immune Disord Drug Targets 2023; 23:389-395. [PMID: 35642119 DOI: 10.2174/1871530322666220531121609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/24/2022] [Accepted: 03/17/2022] [Indexed: 11/22/2022]
Abstract
AIM This study aimed to assess the role of Tight junction proteins (TJPs) and claudins in smokers with and without COPD compared to healthy individuals. BACKGROUND Chronic obstructive pulmonary disease (COPD) is a complex chronic respiratory disease, including various inflammatory mediators. The prime etiological element in the development of COPD is cigarette smoking. The lung airway epithelium comprises beneficial immunological barriers to draw in insults, such as environmental particulates, cigarette smoke, etc. Tight junctions (TJ) connected by transmembrane proteins determine epithelial permeability. Cigarette smoke is indicated to defect TJ integrity. The possible involvement of the airway epithelium in the pathogenesis of COPD has recently become apparent; however, its detailed mechanisms remain elusive. The integrity of airway epithelium is crucial for airway homeostasis; defective airway barrier activity contributes to COPD. OBJECTIVE In the present study, the objective was to investigate mRNA expression levels of TJP's like TJP-1, TJP-2, TJP-3, Tight junction-associated proteins-1, claudin-1, claudin-3, claudin-4, claudin-7, claudin-10, claudin-15, claudin-19, and claudin-25 from blood samples of smokers with COPD and compared them with smokers without COPD and healthy individuals. METHODS The mRNA expressions were evaluated by the quantitative PCR method. RESULTS The gene expressions of these TJPs were significantly down-regulated, specifically in COPD patients with a history of smoking (Smokers with COPD). Besides, FEV% was also established for these patients. Similarly, smokers with COPD showed a significant increase in the expression levels of transcription factors, like ZEB-1, ZEB-2, PDGFA, and HDGF, compared to COPD patients without a history of smoking (smokers without COPD) and the healthy subjects. CONCLUSION In conclusion, cigarette smoke disrupts TJ of the human airway epithelium, and the transcriptional factors counteract this smoke-induced COPD. Thus, TJPs may serve as protective elements for airway epithelial homeostasis during COPD.
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Affiliation(s)
- Sadiya Bi Shaikh
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore -575018, Karnataka, India
- Department of Molecular, Cell and Systems Biology, Institute for Integrative Genome Biology, University of California at Riverside, Riverside, CA 92521, USA
| | - Mahesh Manjunath Gouda
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore -575018, Karnataka, India
- Rahman Lab, Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY 14642, United States of America
| | - Irfan Khandhal
- Department of Pulmonary Medicine, Yenepoya Medical College (Deemed to be University), Deralakatte, Mangalore, Karnataka 575018, India
| | - Tanyeem Rahman
- Department of Anatomy, Yenepoya Medical College (Deemed to be University), Deralakatte, Mangalore, Karnataka, 575018, India
| | - Ashwini Shetty
- Department of Anatomy, Yenepoya Medical College (Deemed to be University), Deralakatte, Mangalore, Karnataka, 575018, India
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Tilston-Lunel AM, Varelas X. Polarity in respiratory development, homeostasis and disease. Curr Top Dev Biol 2023; 154:285-315. [PMID: 37100521 DOI: 10.1016/bs.ctdb.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
The respiratory system is composed of a multitude of cells that organize to form complex branched airways that end in alveoli, which respectively function to guide air flow and mediate gas exchange with the bloodstream. The organization of the respiratory sytem relies on distinct forms of cell polarity, which guide lung morphogenesis and patterning in development and provide homeostatic barrier protection from microbes and toxins. The stability of lung alveoli, the luminal secretion of surfactants and mucus in the airways, and the coordinated motion of multiciliated cells that generate proximal fluid flow, are all critical functions regulated by cell polarity, with defects in polarity contributing to respiratory disease etiology. Here, we summarize the current knowledge of cell polarity in lung development and homeostasis, highlighting key roles for polarity in alveolar and airway epithelial function and outlining relationships with microbial infections and diseases, such as cancer.
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Zhang W, Zhang Y, Zhu Q. Cigarette smoke extract-mediated FABP4 upregulation suppresses viability and induces apoptosis, inflammation and oxidative stress of bronchial epithelial cells by activating p38 MAPK/MK2 signaling pathway. J Inflamm (Lond) 2022; 19:7. [PMID: 35706027 PMCID: PMC9202166 DOI: 10.1186/s12950-022-00304-z] [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: 09/10/2021] [Accepted: 06/06/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Long-term inhalation of cigarette smoke is considered to be one of the main causes of bronchial epithelioid cell damage, but its underlying mechanism has to be further clarified.
Methods
Gene expression at mRNA level and protein levels were detected by qRT-PCR and western blot analysis respectively. CCK-8, TUNEL assays, ELISA, western blot analysis and commercial kits were utilized to test cell viability, apoptosis inflammatory response and oxidative stress. The correlation between fatty acid binding protein 4 (FABP4) and the p38 mitogen-activated protein kinase (MAPK)/MAPK activated kinase 2 (MK2) signaling pathway was verified by western blot analysis and rescue assays.
Results
Cigarette smoke extract (CSE) exposure decreased viability, induced apoptosis and inflammatory response in 16HBE cells. Moreover, the expression of FABP4 in CSE-treated 16HBE cells was up-regulated in a time and dose-dependent manner. Ablation of FABP4 in 16HBE cells significantly protected against CSE-mediated cell viability decline and apoptosis. Further, FABP4 knockdown suppressed inflammatory response by down-regulating the elevated levels of cellular inflammatory factors including TNF-α, IL-1β, IL-6, Cyclooxygenase-2 (Cox-2) and inducible nitric oxide synthase (iNOS) in CSE-treated 16HBE cells. The oxidative stress induced by CSE in 16HBE cells was also inhibited by FABP4 silence as evidence by reduced ROS and MDA level but increased SOD activity caused by FABP4 silence. Finally, all the above effects of FABP4 silence on CSE-treated 16HBE cells were reversed by asiatic acid, an agonist of p38 mitogen-activated protein kinase (MAPK).
Conclusions
The up-regulation of FABP4 expression mediated by CSE exerted pro-inflammatory, pro-oxidative stress and pro-apoptotic effects on bronchial epithelial cells by activating the p38 MAPK/MK2 signaling pathway. Our findings help to further understand the underlying mechanism of cigarette smoke-induced bronchial inflammation.
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Bal C, Aksoy M, Ozturk Z, Unuvar M, Arslan Y. Does combined usage of FFP2 and Surgical mask against SARS-CoV-2 affect SpO 2 values and pulse rates of dental health-care workers? Niger J Clin Pract 2022; 25:1969-1972. [PMID: 36537452 DOI: 10.4103/njcp.njcp_6_22] [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] [Indexed: 06/17/2023]
Abstract
BACKGROUND AND AIM Combined use of surgical mask with filtering facepiece (FFP) 2 masks has been popular among the health-care workers. However, the effect of this preference on the vital values of individuals stays as a challenge among the professionals. The present study aimed to assess the effect of FFP2 mask versus combined use of it with surgical mask on the SpO2 values and pulse rates of individuals. PATIENTS AND METHODS This study was conducted on 20 health-care workers. The pulse rates and SpO2 values were evaluated by pulse oximeter placed in the index fingers of the participants. The participants were divided into two groups: those using the FFP2 mask and those using FFP2-surgical mask combination. Individuals wearing FFP2 mask were examined for a period of 60 min and the same examination was repeated for another period of 60 min in those using combination of FFP2 with surgical mask. The values were measured at the beginning and at 15, 30, 45, and 60 min intervals, respectively. The examinations were conducted in the rest position to obtain standardization. RESULTS The observed data showed no statistical difference at all periods in either SpO2 values or pulse rates between FFP2 and FFP2-surgical mask combined groups. The SpO2 values reduced from the initial time to 15 min in the FFP2-surgical mask group. Also, in the FFP2-SM group, statistically significant increase in values was observed between 15 and 45 min and 15 and 60 min. Another increase in SpO2 value was found in the observations made between made 30 and 45 min in the same group (P < 0.05). The pulse rates of the individuals showed no statistical difference in both the groups and at all experimental periods (P > 0.05). CONCLUSION According to the present study, wearing only the FFP2 mask or FFP2-surgical mask combination seems not to cause any effect on the SpO2 values and pulse rates of the participants.
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Affiliation(s)
- C Bal
- Department of Pediatric Dentistry, Health Sciences University Gülhane Dentistry Faculty, Ankara, Turkey
| | - M Aksoy
- Department of Pediatric Dentistry, Health Sciences University Gülhane Dentistry Faculty, Ankara, Turkey
| | - Z Ozturk
- Department of Pediatric Dentistry, Health Sciences University Gülhane Dentistry Faculty, Ankara, Turkey
| | - M Unuvar
- Department of Pediatric Dentistry, Health Sciences University Gülhane Dentistry Faculty, Ankara, Turkey
| | - Y Arslan
- Department of Chest Disease, Health Sciences University Gülhane Training and Research Hospital, Ankara, Turkey
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Tulen CBM, Duistermaat E, Cremers JWJM, Klerx WNM, Fokkens PHB, Weibolt N, Kloosterboer N, Dentener MA, Gremmer ER, Jessen PJJ, Koene EJC, Maas L, Opperhuizen A, van Schooten FJ, Staal YCM, Remels AHV. Smoking-Associated Exposure of Human Primary Bronchial Epithelial Cells to Aldehydes: Impact on Molecular Mechanisms Controlling Mitochondrial Content and Function. Cells 2022; 11:3481. [PMID: 36359877 PMCID: PMC9655975 DOI: 10.3390/cells11213481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 09/21/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a devastating lung disease primarily caused by exposure to cigarette smoke (CS). During the pyrolysis and combustion of tobacco, reactive aldehydes such as acetaldehyde, acrolein, and formaldehyde are formed, which are known to be involved in respiratory toxicity. Although CS-induced mitochondrial dysfunction has been implicated in the pathophysiology of COPD, the role of aldehydes therein is incompletely understood. To investigate this, we used a physiologically relevant in vitro exposure model of differentiated human primary bronchial epithelial cells (PBEC) exposed to CS (one cigarette) or a mixture of acetaldehyde, acrolein, and formaldehyde (at relevant concentrations of one cigarette) or air, in a continuous flow system using a puff-like exposure protocol. Exposure of PBEC to CS resulted in elevated IL-8 cytokine and mRNA levels, increased abundance of constituents associated with autophagy, decreased protein levels of molecules associated with the mitophagy machinery, and alterations in the abundance of regulators of mitochondrial biogenesis. Furthermore, decreased transcript levels of basal epithelial cell marker KRT5 were reported after CS exposure. Only parts of these changes were replicated in PBEC upon exposure to a combination of acetaldehyde, acrolein, and formaldehyde. More specifically, aldehydes decreased MAP1LC3A mRNA (autophagy) and BNIP3 protein (mitophagy) and increased ESRRA protein (mitochondrial biogenesis). These data suggest that other compounds in addition to aldehydes in CS contribute to CS-induced dysregulation of constituents controlling mitochondrial content and function in airway epithelial cells.
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Affiliation(s)
- Christy B. M. Tulen
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Evert Duistermaat
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | | | - Walther N. M. Klerx
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Paul H. B. Fokkens
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Naömi Weibolt
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Nico Kloosterboer
- Department of Pediatrics, Maastricht University Medical Center+, 6229 HX Maastricht, The Netherlands
- Primary Lung Culture (PLUC) Facility, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Mieke A. Dentener
- Primary Lung Culture (PLUC) Facility, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Respiratory Medicine, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Eric R. Gremmer
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Phyllis J. J. Jessen
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Evi J. C. Koene
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Lou Maas
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Antoon Opperhuizen
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
- Office of Risk Assessment and Research, Netherlands Food and Consumer Product Safety Authority (NVWA), 3511 GG Utrecht, The Netherlands
| | - Frederik-Jan van Schooten
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Yvonne C. M. Staal
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Alexander H. V. Remels
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
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Zhong B, Seah JJ, Liu F, Ba L, Du J, Wang DY. The role of hypoxia in the pathophysiology of chronic rhinosinusitis. Allergy 2022; 77:3217-3232. [PMID: 35603933 DOI: 10.1111/all.15384] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 04/19/2022] [Accepted: 05/17/2022] [Indexed: 02/05/2023]
Abstract
Chronic rhinosinusitis (CRS) is a chronic inflammatory disease of the nasal cavity characterized by excessive nasal mucus secretion and nasal congestion. The development of CRS is related to pathological mechanisms induced by hypoxia. Under hypoxic conditions, the stable expression of both Hypoxia inducible factor-1 (HIF-1) α and HIF-2α are involved in the immune response and inflammatory pathways of CRS. The imbalance in the composition of nasal microbiota may affect the hypoxic state of CRS and perpetuate existing inflammation. Hypoxia affects the differentiation of nasal epithelial cells such as ciliated cells and goblet cells, induces fibroblast proliferation, and leads to epithelial-mesenchymal transition (EMT) and tissue remodeling. Hypoxia also affects the proliferation and differentiation of macrophages, eosinophils, basophils, and mast cells in sinonasal mucosa, and thus influences the inflammatory state of CRS by regulating T cells and B cells. Given the multifactorial nature in which HIF is linked to CRS, this study aims to elucidate the effect of hypoxia on the pathogenic mechanisms of CRS.
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Affiliation(s)
- Bing Zhong
- Upper Airways Research Laboratory, Department of Otolaryngology-Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China.,Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jun Jie Seah
- Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Feng Liu
- Upper Airways Research Laboratory, Department of Otolaryngology-Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Luo Ba
- Department of Otolaryngology, People's Hospital of Tibet Autonomous Region, Lhasa, China
| | - Jintao Du
- Upper Airways Research Laboratory, Department of Otolaryngology-Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - De Yun Wang
- Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Wang C, Bing A, Liu H, Wang X, Zhao J, Lin H, Jiao H. High ambient humidity aggravates ammonia-induced respiratory mucosal inflammation by eliciting Th1/Th2 imbalance and NF-κB pathway activation in laying hens. Poult Sci 2022; 101:102028. [PMID: 35882092 PMCID: PMC9326132 DOI: 10.1016/j.psj.2022.102028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/13/2022] [Accepted: 06/19/2022] [Indexed: 11/26/2022] Open
Abstract
Ammonia (NH3) is an irritant and harmful gas. Its accumulation in the poultry house poses detrimental effects on the respiratory mucosal system of birds. In this process, the relative humidity of the poultry house also plays an important role in potentiating the adverse effects of NH3 on the respiratory status of birds, causing severe physiological consequences. In this study, the combined effects of NH3 and humidity on the respiratory mucosal barrier of laying hens was studied. The gene expression of tight junction proteins, mucin, inflammatory cytokines secreted by Th1/Th2 cells, and proteins related to the Nuclear factor-κB (NF-κB) signaling pathway were detected by qRT-PCR. In addition, the contents of mucin and secretory immunoglobulin A (SIgA) in bronchoalveolar lavage fluid (BALF) were determined. The results showed that treatment with NH3 alone or NH3 and humidity led to morphological changes in the respiratory tract, decreased the gene expressions of tight junction protein, and increased the expression of mucin. Also, the expression of interleukin-4 (IL-4) and IL-10 were increased, whereas, the expression of interferon-γ (IFN-γ) and IL-2 was decreased in laying hens treated with NH3 and humidity. Furthermore, the activation of inhibitor kappa B kinase β (I-KK-β) and the degradation of inhibitor of NF-κB α (I-κB-α) contributed to the activation of the NF-κB pathway, such that the downstream genes, cycooxygenase 2 (COX2) and inducible nitric oxide synthase (iNOS) were significantly increased. In conclusion, NH3 damaged the mucosal barrier and induced an imbalance in the mucosal immunity, leading to respiratory tract inflammation. Thus, the relative humidity of the environment aggravates the adverse effects of NH3 in poultry.
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Affiliation(s)
- Chen Wang
- Department of Animal Science and Technology, Shandong Agricultural University, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an City, Shandong Province 271018, China
| | - Aiying Bing
- School of Basic Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan City, Shandong Province 250118, China
| | - Hui Liu
- Department of Animal Science and Technology, Shandong Agricultural University, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an City, Shandong Province 271018, China
| | - Xiaojuan Wang
- Department of Animal Science and Technology, Shandong Agricultural University, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an City, Shandong Province 271018, China
| | - Jingpeng Zhao
- Department of Animal Science and Technology, Shandong Agricultural University, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an City, Shandong Province 271018, China
| | - Hai Lin
- Department of Animal Science and Technology, Shandong Agricultural University, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an City, Shandong Province 271018, China
| | - Hongchao Jiao
- Department of Animal Science and Technology, Shandong Agricultural University, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an City, Shandong Province 271018, China.
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Kang D, Lee H, Jung S. Use of a 3D inkjet-printed model to access dust particle toxicology in the human alveolar barrier. Biotechnol Bioeng 2022; 119:3668-3677. [PMID: 36043483 DOI: 10.1002/bit.28220] [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: 02/22/2022] [Revised: 07/20/2022] [Accepted: 08/26/2022] [Indexed: 11/11/2022]
Abstract
Fine dust particles in the air travel into our body via the airway tract and cause severe respiratory diseases. Thus, the analysis of the effects of dust particles on the respiratory system has been receiving significant research interest. However, most studies on the toxicity of dust particles involve two-dimensional (2D) cell cultures, animal models, and epidemiology. Here, we inkjet-printed an three-dimensional (3D) alveolar barrier model to study how dust particles cause respiratory diseases. The three-layered in vitro model was exposed to A2 fine test dust with varying concentrations and exposure durations. The results highlighted the destruction of the tissue architecture along with apoptosis in the bioprinted alveolar barrier. The damage at the cellular level induced an increase in the amount of pro-inflammatory cytokines secreted, followed by triggering of the signal transduction pathway and activation of transcription factors. As a consequence of the release of cytokines, the extracellular matrix was degraded, which led to the collapse of the cell structure, loss of cell polarity, and a decrease in the barrier tightness. Further, the pulmonary surfactant protein-related genes in the dust-treated alveolar tissue were investigated to evaluate the possible role of dust particles in pulmonary surfactant dysfunction. This study demonstrated the use of 3D-printed tissue model to evaluate the physiological impact of fine dust particles on cytotoxicity, alveolar barrier rigidity, and surfactant secretion of an alveolar barrier. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Dayoon Kang
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Hyomin Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Sungjune Jung
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea.,Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea.,Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
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Phenol-Rich Botanicals Modulate Oxidative Stress and Epithelial Integrity in Intestinal Epithelial Cells. Animals (Basel) 2022; 12:ani12172188. [PMID: 36077907 PMCID: PMC9454507 DOI: 10.3390/ani12172188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 12/16/2022] Open
Abstract
Botanicals are mainly known for their role as antimicrobials and anti-inflammatories. Thus, the dual purpose of the study was to verify the antioxidant potential of the tested botanicals and to evaluate their possible modulation of intestinal barrier integrity. As the effects of various phenol-rich extracts were screened, the human Caco-2 cell line was determined to be most suitable for use as the in vitro model for the intestinal epithelium. The tested botanicals, all approved as feed additives, are ginger essential oil, tea tree oil, grape seed extract, green tea extract, olive extract, chestnut extract, pomegranate extract, thyme essential oil, and capsicum oleoresin. The cells were treated with incremental doses of each botanical, followed by measurements of transepithelial electrical resistance (TEER), gene expression of tight junctions (TJs), and reactive oxygen species (ROS). The results showed how different phenol-rich botanicals could modulate barrier functions and oxidative stress in different ways. Interestingly, all the botanicals tested exerted an antioxidant potential by dropping the cytoplasmatic ROS, while the beneficial effect was exerted at different concentrations for each botanical. Our data support the role of plant extracts and essential oils in controlling gut barrier function and in reducing the negative effects of oxidative stress in intestinal epithelial cells, thereby supporting gut barrier functionality.
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Golec M, Lemieszek MK, Dutkiewicz J, Milanowski J, Barteit S. A Scoping Analysis of Cathelicidin in Response to Organic Dust Exposure and Related Chronic Lung Illnesses. Int J Mol Sci 2022; 23:ijms23168847. [PMID: 36012117 PMCID: PMC9408003 DOI: 10.3390/ijms23168847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/06/2022] [Accepted: 08/07/2022] [Indexed: 11/21/2022] Open
Abstract
Over two billion people worldwide are exposed to organic dust, which can cause respiratory disorders. The discovery of the cathelicidin peptide provides novel insights into the lung’s response to organic dust; however, its role in the lung’s response to organic dust exposure and chronic lung diseases remains limited. We conducted a scoping review to map the current evidence on the role of cathelicidin LL-37/CRAMP in response to organic dust exposure and related chronic lung diseases: hypersensitivity pneumonitis (HP), chronic obstructive pulmonary disease (COPD) and asthma. We included a total of n = 53 peer-reviewed articles in this review, following the process of (i) a preliminary screening; (ii) a systematic MEDLINE/PubMed database search; (iii) title, abstract and full-text screening; (iv) data extraction and charting. Cathelicidin levels were shown to be altered in all clinical settings investigated; its pleiotropic function was confirmed. It was found that cathelicidin contributes to maintaining homeostasis and participates in lung injury response and repair, in addition to exerting a positive effect against microbial load and infections. In addition, LL-37 was found to sustain continuous inflammation, increase mucus formation and inhibit microorganisms and corticosteroids. In addition, studies investigated cathelicidin as a treatment modality, such as cathelicidin inhalation in experimental HP, which had positive effects. However, the primary focus of the included articles was on LL-37’s antibacterial effect, leading to the conclusion that the beneficial LL-37 activity has not been adequately examined and that further research is required.
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Affiliation(s)
- Marcin Golec
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, Heidelberg University, 69117 Heidelberg, Germany
- Correspondence:
| | - Marta Kinga Lemieszek
- Department of Medical Biology, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland
| | - Jacek Dutkiewicz
- Department of Biological Health Hazards and Parasitology, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland
| | - Janusz Milanowski
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, 20-059 Lublin, Poland
| | - Sandra Barteit
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, Heidelberg University, 69117 Heidelberg, Germany
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Chen Z, Wu H, Fan W, Zhang J, Yao Y, Su W, Wang Y, Li P. Naringenin suppresses BEAS-2B-derived extracellular vesicular cargoes disorder caused by cigarette smoke extract thereby inhibiting M1 macrophage polarization. Front Immunol 2022; 13:930476. [PMID: 35924248 PMCID: PMC9342665 DOI: 10.3389/fimmu.2022.930476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/29/2022] [Indexed: 11/13/2022] Open
Abstract
Extracellular vesicles (EVs)-mediated epithelium-macrophage crosstalk has been proved to maintain lung homeostasis in cigarette smoke-induced lung diseases such as chronic obstructive pulmonary disease (COPD). In our previous study, we found that EVs derived from cigarette smoke extract (CSE) treated BEAS-2B promoted M1 macrophage polarization, which probably accelerated the development of inflammatory responses. Naringenin has been proved to suppress M1 macrophage polarization, but whether naringenin regulates macrophage polarization mediated by EVs has not been reported. In this study, we firstly found that EVs derived from naringenin and CSE co-treated BEAS-2B significantly inhibited the expression of CD86 and CD80 and the secretion of tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-1β, inducible nitric oxide synthase (iNOS), and IL-12 in macrophage induced by EVs derived from CSE-treated BEAS-2B. Further research revealed that naringenin downregulated BEAS-2B-derived EVs miR-21-3p which targeted phosphatase and tensin homolog deleted on chromosome ten/protein kinase B (PTEN/AKT) cascade in macrophages and then suppressed M1 macrophage polarization. Subsequent proteomics suggested that naringenin decreased BEAS-2B-derived EVs poly ADP-ribose polymerase (PARP)1 expression thereby suppressing M1 macrophage polarization probably. Our study provides novel pharmacological references for the mechanism of naringenin in the treatment of cigarette smoke-induced lung inflammatory diseases.
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Sun YB, Ni Y, Fan XS, Zhou LP, Yue QF, Shang EX. Effect of Houpo-Mahuang Decoction on aggravated asthma induced by cigarette smoke and the expression of TRPA1 and tight junctions in mice. JOURNAL OF ETHNOPHARMACOLOGY 2022; 293:115217. [PMID: 35337920 DOI: 10.1016/j.jep.2022.115217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/07/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cigarette smoke (CS) is a common environmental irritant and a risk factor for asthma, as it induces as well as aggravates asthmatic attacks. The injured airway epithelial tight junctions (TJs) aggravate asthma. CS can aggravate asthma by activating the transient receptor potential ankyrin A1 (TRPA1) channel and enhancing TJs destruction. Houpo Mahuang decoction (HPMHD) is a classic traditional Chinese prescription for the treatment of asthma. However, its underlying action mechanism is unclear. AIM OF THE STUDY The present study aimed to evaluate the effect of HPMHD on the asthma phenotype and the regulation of TRPA1 and TJs in a CS-induced mouse model of aggravated asthma. MATERIALS AND METHODS Under optimized chromatographic and mass spectrometry conditions, the ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) technique was used to detect and analyze the major chemical components of HPMHD. C57BL/6 female mice were randomly divided into seven groups, viz, normal saline (NS) group, ovalbumin (OVA) + CS group, dexamethasone group, HPMHD high-dose group and low-dose groups, n-butanol extract group, and ethyl acetate extract group, with 10 mice in each group. OVA sensitization and challenge, and CS exposure were used to establish the aggravated asthma model. As the main indices to evaluate the protective effect of HPMHD, the eosinophils count in peripheral blood, percentages of inflammatory cells classified and the levels of interleukin (IL)-4, IL-5, IL-13 in the bronchoalveolar lavage fluid (BALF), airway responsiveness enhanced pause (Penh), and changes in lung histopathology were determined and compared among the groups. The mRNA and protein expression of TRPA1 and TJs in lung tissue was also examined. RESULTS Using UPLC-QTOF-MS, the chemical components of HPMHD, including ephedrine, pseudoephedrine, laetrile, and amygdalin amide, were identified by 51 signal peaks. Compared with those in the NS group, the eosinophil number in the peripheral blood and the eosinophils and neutrophils percentages in BALF of the OVA + CS group were remarkably increased. Following the inhalation of 50 μl of acetylcholine chloride (ACH) at doses of 25 and 50 mg/mL, the Penh increased significantly (p < 0.01). Moreover, in the OVA + CS group, hematoxylin and eosin (H&E) staining of lung tissue showed a significant number of infiltrated inflammatory cells, increased mucus secretion in the lumen, damaged bronchial mucosa, increased thickness of tracheal wall, and increased score of lung damage (p < 0.01). The IL-4/5/13 levels were also remarkably increased (p < 0.01). The protein as well as gene expression of both ZO-1 and occludin decreased markedly in the lung tissue, while the expression of TRPA1 and claudin-2 was increased (p < 0.05, p < 0.01). Next, the OVA + CS group and the treatment groups were compared. The inflammatory cells, Penh value, and levels of IL-4/5/13 were significantly reduced, and less lung injury was observed in the treatment groups. The gene and protein levels of TRPA1 and TJs were corrected (p < 0.05, p < 0.01); the effects on the HPMHD high-dose and ethyl acetate extract groups were particularly remarkable. CONCLUSIONS HPMHD reduced airway hyperresponsiveness, inflammatory cell recruitment and Th2 cytokine secretion in CS-induced aggravated asthma mice, in a manner potentially dependent on regulation of the expression of TRPA1 and TJ proteins. Both the n-butanol and ethyl acetate extracts contained the active ingredients, especially the ethyl acetate extract.
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Affiliation(s)
- Yu-Bo Sun
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ying Ni
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xin-Sheng Fan
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Li-Ping Zhou
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Qin-Fei Yue
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Er-Xin Shang
- Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, 210023, China
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Xia Y, Cao H, Zheng J, Chen L. Claudin-1 Mediated Tight Junction Dysfunction as a Contributor to Atopic March. Front Immunol 2022; 13:927465. [PMID: 35844593 PMCID: PMC9277052 DOI: 10.3389/fimmu.2022.927465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022] Open
Abstract
Atopic march refers to the phenomenon wherein the occurrence of asthma and food allergy tends to increase after atopic dermatitis. The mechanism underlying the progression of allergic inflammation from the skin to gastrointestinal (GI) tract and airways has still remained elusive. Impaired skin barrier was proposed as a risk factor for allergic sensitization. Claudin-1 protein forms tight junctions and is highly expressed in the epithelium of the skin, airways, and GI tract, thus, the downregulation of claudin-1 expression level caused by CLDN-1 gene polymorphism can mediate common dysregulation of epithelial barrier function in these organs, potentially leading to allergic sensitization at various sites. Importantly, in patients with atopic dermatitis, asthma, and food allergy, claudin-1 expression level was significantly downregulated in the skin, bronchial and intestinal epithelium, respectively. Knockdown of claudin-1 expression level in mouse models of atopic dermatitis and allergic asthma exacerbated allergic inflammation, proving that downregulation of claudin-1 expression level contributes to the pathogenesis of allergic diseases. Therefore, we hypothesized that the tight junction dysfunction mediated by downregulation of claudin-1 expression level contributes to atopic march. Further validation with clinical data from patients with atopic march or mouse models of atopic march is needed. If this hypothesis can be fully confirmed, impaired claudin-1 expression level may be a risk factor and likely a diagnostic marker for atopic march. Claudin-1 may serve as a valuable target to slowdown or block the progression of atopic march.
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Zhang L, Ji X, Ding F, Wu X, Tang N, Wu Q. Apoptosis and blood-testis barrier disruption during male reproductive dysfunction induced by PAHs of different molecular weights. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 300:118959. [PMID: 35134430 DOI: 10.1016/j.envpol.2022.118959] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 01/14/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
The association between polycyclic aromatic hydrocarbons (PAHs) and male reproductive dysfunction has attracted increasing attention. The purpose of this study was to compare the male reproductive toxicity of multiple PAHs and to investigate the underlying molecular mechanisms. TM4 cells (mouse testicular Sertoli cells, SCs) were treated with benzo(a)pyrene (BaP), pyrene (Py), fluoranthene (Fl) and phenanthrene (Phe) (0, 0.1, 1, 10, 50, or 100 μM) for varying time points (4, 12, 24, or 48 h), and male C57BL/6 mice were administered BaP and Py (0, 10, 50, or 100 mg/kg body weight) for 14 days based on the cell experimental results. Histopathological examination, western blotting, ELISA, biochemical assays, RT-PCR, flow cytometry, JC-1 staining and trans-epithelium electrical resistance (TEER) measurements were used to assess apoptosis, blood-testis barrier (BTB) integrity, intracellular calcium ([Ca2+]i) concentrations and oxidative stress (OS). The results revealed that the mRNA levels and enzymatic activities of CYP450 and GST family members; levels of ROS, MDA, cleaved caspase 3 (c-caspase 3), caspase 9, Bax, and cytochrome C (CytC); and numbers of TUNEL-positive cells were significantly increased by BaP and Py, while levels of AhR, GSH, SOD, CAT, Bcl-2 and ΔΨm were decreased. Additionally, BaP and Py notably interfered with tight junctions (TJs) and adherens junctions (AJs) in the BTB. Intriguingly, BaP, but not Py, induced [Ca2+]i overload and gap junction (GJ) destruction. There was no dramatic effect of Fl and/or Phe on any of the above parameters except that slight cytotoxicity was observed with higher doses of Fl. Collectively, these findings showed that BaP and Py elicited SC apoptosis and BTB disruption involving mitochondrial dysfunction and OS, but [Ca2+]i fluctuation and GJ injury were only observed with BaP-induced reproductive toxicity. The male reproductive toxicity of the selected PAHs was ranked in the order of BaP > Py > Fl > Phe.
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Affiliation(s)
- Lin Zhang
- Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200082, China; Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China
| | - Xiaoli Ji
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China; Department of Occupational Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 200433, China
| | - Fan Ding
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China
| | - Xuan Wu
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China
| | - Ning Tang
- Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan; Institute of Nature and Environmental Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Qing Wu
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China.
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Velasco E, Delicado‐Miralles M, Hellings PW, Gallar J, Van Gerven L, Talavera K. Epithelial and sensory mechanisms of nasal hyperreactivity. Allergy 2022; 77:1450-1463. [PMID: 35174893 DOI: 10.1111/all.15259] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 02/06/2022] [Accepted: 02/14/2022] [Indexed: 11/28/2022]
Abstract
"Nasal hyperreactivity" is a key feature in various phenotypes of upper airway diseases, whereby reactions of the nasal epithelium to diverse chemical and physical stimuli are exacerbated. In this review, we illustrate how nasal hyperreactivity can result from at least three types of mechanisms: (1) impaired barrier function, (2) hypersensitivity to external and endogenous stimuli, and (3) potentiation of efferent systems. We describe the known molecular basis of hyperreactivity related to the functional impairment of epithelial cells and somatosensory innervation, and indicate that the thermal, chemical, and mechanical sensors determining hyperreactivity in humans remain to be identified. We delineate research directions that may provide new insights into nasal hyperreactivity associated with rhinitis/rhinosinusitis pathophysiology and therapeutics. The elucidation of the molecular mechanisms underlying nasal hyperreactivity is essential for the treatment of rhinitis according to the precepts of precision medicine.
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Affiliation(s)
- Enrique Velasco
- Instituto de Neurociencias Universidad Miguel Hernández‐CSIC San Juan de Alicante Spain
- The European University of Brain and Technology‐Neurotech EU San Juan de Alicante Spain
| | | | - Peter W. Hellings
- Department of Otorhinolaryngology University Hospitals Leuven Leuven Belgium
| | - Juana Gallar
- Instituto de Neurociencias Universidad Miguel Hernández‐CSIC San Juan de Alicante Spain
- The European University of Brain and Technology‐Neurotech EU San Juan de Alicante Spain
- Instituto de Investigación Sanitaria y Biomédica de Alicante San Juan de Alicante Spain
| | - Laura Van Gerven
- Department of Otorhinolaryngology University Hospitals Leuven Leuven Belgium
- Department of Microbiology, Immunology and transplantation, Allergy and Clinical Immunology Research Unit KU Leuven Leuven Belgium
- Department of Neurosciences, Experimental Otorhinolaryngology, Rhinology Research KU Leuven Leuven Belgium
| | - Karel Talavera
- Laboratory of Ion Channel Research Department of Cellular and Molecular Medicine KU Leuven, VIB‐KU Leuven Center for Brain & Disease Research Leuven Belgium
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Role of Short-Chain Fatty Acids Produced by Gut Microbiota in Innate Lung Immunity and Pathogenesis of the Heterogeneous Course of Chronic Obstructive Pulmonary Disease. Int J Mol Sci 2022; 23:ijms23094768. [PMID: 35563159 PMCID: PMC9099629 DOI: 10.3390/ijms23094768] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 02/06/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a widespread socially significant disease. The development of COPD involves the innate immune system. Interestingly, the regulation of the innate lung immune system is related to the gut microbiota. This connection is due to the production by gut microorganisms of short-chain fatty acids (SCFAs) such as acetate, propionate, and butyrate. Nutritional disturbances and changes in the structure of the intestinal microbiota lead to a decrease in SCFAs production and their effect on pulmonary immunity. The presence of a metabolic and immune axis linking the lungs and gut plays an important role in the pathogenesis of COPD. In addition, the nature of nutrition and SCFAs may participate in the development of the clinically heterogeneous course of COPD.
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Love ME, Proud D. Respiratory Viral and Bacterial Exacerbations of COPD—The Role of the Airway Epithelium. Cells 2022; 11:cells11091416. [PMID: 35563722 PMCID: PMC9099594 DOI: 10.3390/cells11091416] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 12/14/2022] Open
Abstract
COPD is a leading cause of death worldwide, with acute exacerbations being a major contributor to disease morbidity and mortality. Indeed, exacerbations are associated with loss of lung function, and exacerbation frequency predicts poor prognosis. Respiratory infections are important triggers of acute exacerbations of COPD. This review examines the role of bacterial and viral infections, along with co-infections, in the pathogenesis of COPD exacerbations. Because the airway epithelium is the initial site of exposure both to cigarette smoke (or other pollutants) and to inhaled pathogens, we will focus on the role of airway epithelial cell responses in regulating the pathophysiology of exacerbations of COPD. This will include an examination of the interactions of cigarette smoke alone, and in combination with viral and bacterial exposures in modulating epithelial function and inflammatory and host defense pathways in the airways during COPD. Finally, we will briefly examine current and potential medication approaches to treat acute exacerbations of COPD triggered by respiratory infections.
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