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Xu JB, Guan WJ, Zhang YL, Qiu ZE, Chen L, Hou XC, Yue J, Zhou YY, Sheng J, Zhao L, Zhu YX, Sun J, Zhao J, Zhou WL, Zhong NS. SARS-CoV-2 envelope protein impairs airway epithelial barrier function and exacerbates airway inflammation via increased intracellular Cl - concentration. Signal Transduct Target Ther 2024; 9:74. [PMID: 38528022 DOI: 10.1038/s41392-024-01753-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 01/02/2024] [Accepted: 01/19/2024] [Indexed: 03/27/2024] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection disrupts the epithelial barrier and triggers airway inflammation. The envelope (E) protein, a core virulence structural component of coronaviruses, may play a role in this process. Pathogens could interfere with transepithelial Cl- transport via impairment of the cystic fibrosis transmembrane conductance regulator (CFTR), which modulates nuclear factor κB (NF-κB) signaling. However, the pathological effects of SARS-CoV-2 E protein on airway epithelial barrier function, Cl- transport and the robust inflammatory response remain to be elucidated. Here, we have demonstrated that E protein down-regulated the expression of tight junctional proteins, leading to the disruption of the airway epithelial barrier. In addition, E protein triggered the activation of Toll-like receptor (TLR) 2/4 and downstream c-Jun N-terminal kinase (JNK) signaling, resulting in an increased intracellular Cl- concentration ([Cl-]i) via up-regulating phosphodiesterase 4D (PDE4D) expression in airway epithelial cells. This elevated [Cl-]i contributed to the heightened airway inflammation through promoting the phosphorylation of serum/glucocorticoid regulated kinase 1 (SGK1). Moreover, blockade of SGK1 or PDE4 alleviated the robust inflammatory response induced by E protein. Overall, these findings provide novel insights into the pathogenic role of SARS-CoV-2 E protein in airway epithelial damage and the ongoing airway inflammation during SARS-CoV-2 infection.
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Affiliation(s)
- Jian-Bang Xu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
| | - Wei-Jie Guan
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China.
- Department of Thoracic Surgery, Guangzhou Institute for Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China.
- Guangzhou National Laboratory, Guangzhou, P. R. China.
| | - Yi-Lin Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
- Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Zhuo-Er Qiu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Lei Chen
- School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Xiao-Chun Hou
- School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Junqing Yue
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangzhou National Laboratory, Guangzhou, P. R. China
| | - Yu-Yun Zhou
- School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Jie Sheng
- School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Lei Zhao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, P. R. China
| | - Yun-Xin Zhu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Jing Sun
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangzhou National Laboratory, Guangzhou, P. R. China
| | - Jincun Zhao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangzhou National Laboratory, Guangzhou, P. R. China
| | - Wen-Liang Zhou
- School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China.
| | - Nan-Shan Zhong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China.
- Guangzhou National Laboratory, Guangzhou, P. R. China.
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Yuan HX, Chen YT, Li YQ, Wang YS, Ou ZJ, Li Y, Gao JJ, Deng MJ, Song YK, Fu L, Ci HB, Chang FJ, Cao Y, Jian YP, Kang BA, Mo ZW, Ning DS, Peng YM, Liu ZL, Liu XJ, Xu YQ, Xu J, Ou JS. Endothelial extracellular vesicles induce acute lung injury via follistatin-like protein 1. SCIENCE CHINA. LIFE SCIENCES 2024; 67:475-487. [PMID: 37219765 PMCID: PMC10202752 DOI: 10.1007/s11427-022-2328-x] [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: 09/12/2022] [Accepted: 03/06/2023] [Indexed: 05/24/2023]
Abstract
Cardiopulmonary bypass has been speculated to elicit systemic inflammation to initiate acute lung injury (ALI), including acute respiratory distress syndrome (ARDS), in patients after cardiac surgery. We previously found that post-operative patients showed an increase in endothelial cell-derived extracellular vesicles (eEVs) with components of coagulation and acute inflammatory responses. However, the mechanism underlying the onset of ALI owing to the release of eEVs after cardiopulmonary bypass, remains unclear. Plasma plasminogen-activated inhibitor-1 (PAI-1) and eEV levels were measured in patients with cardiopulmonary bypass. Endothelial cells and mice (C57BL/6, Toll-like receptor 4 knockout (TLR4-/-) and inducible nitric oxide synthase knockout (iNOS-/-)) were challenged with eEVs isolated from PAI-1-stimulated endothelial cells. Plasma PAI-1 and eEVs were remarkably enhanced after cardiopulmonary bypass. Plasma PAI-1 elevation was positively correlated with the increase in eEVs. The increase in plasma PAI-1 and eEV levels was associated with post-operative ARDS. The eEVs derived from PAI-1-stimulated endothelial cells could recognize TLR4 to stimulate a downstream signaling cascade identified as the Janus kinase 2/3 (JAK2/3)-signal transducer and activator of transcription 3 (STAT3)-interferon regulatory factor 1 (IRF-1) pathway, along with iNOS induction, and cytokine/chemokine production in vascular endothelial cells and C57BL/6 mice, ultimately contributing to ALI. ALI could be attenuated by JAK2/3 or STAT3 inhibitors (AG490 or S3I-201, respectively), and was relieved in TLR4-/- and iNOS-/- mice. eEVs activate the TLR4/JAK3/STAT3/IRF-1 signaling pathway to induce ALI/ARDS by delivering follistatin-like protein 1 (FSTL1), and FSTL1 knockdown in eEVs alleviates eEV-induced ALI/ARDS. Our data thus demonstrate that cardiopulmonary bypass may increase plasma PAI-1 levels to induce FSTL1-enriched eEVs, which target the TLR4-mediated JAK2/3/STAT3/IRF-1 signaling cascade and form a positive feedback loop, leading to ALI/ARDS after cardiac surgery. Our findings provide new insight into the molecular mechanisms and therapeutic targets for ALI/ARDS after cardiac surgery.
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Affiliation(s)
- Hao-Xiang Yuan
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Ya-Ting Chen
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Yu-Quan Li
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Yan-Sheng Wang
- State Key Laboratory of Respiratory Disease, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Zhi-Jun Ou
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
- Division of Hypertension and Vascular Diseases, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - Yan Li
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Jian-Jun Gao
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Meng-Jie Deng
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Yuan-Kai Song
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Li Fu
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Hong-Bo Ci
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Feng-Jun Chang
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Yang Cao
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Yu-Peng Jian
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Bi-Ang Kang
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Zhi-Wei Mo
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Da-Sheng Ning
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Yue-Ming Peng
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Ze-Long Liu
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Xiao-Jun Liu
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Ying-Qi Xu
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China
| | - Jun Xu
- State Key Laboratory of Respiratory Disease, Guangzhou, 510120, China.
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China.
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China.
| | - Jing-Song Ou
- Division of Cardiac Surgery, Cardiovascular Diseases Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China.
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangzhou, 510080, China.
- Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangzhou, 510080, China.
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Deng W, Lu Y, Hu P, Zhang Q, Li S, Yang D, Zhao N, Qian K, Liu F. Integrated Analysis of Non-Coding RNA and mRNA Expression Profiles in Exosomes from Lung Tissue with Sepsis-Induced Acute Lung Injury. J Inflamm Res 2023; 16:3879-3895. [PMID: 37674532 PMCID: PMC10478974 DOI: 10.2147/jir.s419491] [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: 05/01/2023] [Accepted: 08/19/2023] [Indexed: 09/08/2023] Open
Abstract
Background Acute lung injury (ALI) is associated with a high mortality rate; however, the underlying molecular mechanisms are poorly understood. The purpose of this study was to investigate the expression profile and related networks of long noncoding RNAs (lncRNAs), microRNAs (miRNAs), and mRNAs in lung tissue exosomes obtained from sepsis-induced ALI. Methods A mouse model of sepsis was established using the cecal ligation and puncture method. RNA sequencing was performed using lung tissue exosomes obtained from mice in the sham and CLP groups. Hematoxylin-eosin staining, Western blotting, immunofluorescence, quantitative real-time polymerase chain reaction, and nanoparticle tracking analysis were performed to identify relevant phenotypes, and bioinformatic algorithms were used to evaluate competitive endogenous RNA (ceRNA) networks. Results Thirty lncRNA-miRNA-mRNA interactions were identified, including two upregulated lncRNAs, 30 upregulated miRNAs, and two downregulated miRNAs. Based on the expression levels of differentially expressed mRNAs(DEmRNAs), differentially expressed LncRNAs(DELncRNAs), and differentially expressed miRNAs(DEmiRNAs), 30 ceRNA networks were constructed. Conclusion Our study revealed, for the first time, the expression profiles of lncRNA, miRNA, and mRNA in exosomes isolated from the lungs of mice with sepsis-induced ALI, and the exosome co-expression network and ceRNA network related to ALI in sepsis.
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Affiliation(s)
- Wei Deng
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Yanhua Lu
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Ping Hu
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Qingqing Zhang
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Shuangyan Li
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Dong Yang
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Ning Zhao
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Kejian Qian
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
| | - Fen Liu
- Department of Critical Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
- Medical Innovation Center, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
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Sun PP, Li D, Su M, Ren Q, Guo WP, Wang JL, Du LY, Xie GC. Cell membrane-bound toll-like receptor-1/2/4/6 monomers and -2 heterodimer inhibit enterovirus 71 replication by activating the antiviral innate response. Front Immunol 2023; 14:1187035. [PMID: 37207203 PMCID: PMC10189127 DOI: 10.3389/fimmu.2023.1187035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/24/2023] [Indexed: 05/21/2023] Open
Abstract
Host immune activation is critical for enterovirus 71 (EV71) clearance and immunopathogenesis. However, the mechanism of innate immune activation, especially of cell membrane-bound toll-like receptors (TLRs), against EV71 remains unknown. We previously demonstrated that TLR2 and its heterodimer inhibit EV71 replication. In this study, we systematically investigated the effects of TLR1/2/4/6 monomers and TLR2 heterodimer (TLR2/TLR1, TLR2/TLR6, and TLR2/TLR4) on EV71 replication and innate immune activation. We found that the overexpression of human- or mouse-derived TLR1/2/4/6 monomers and TLR2 heterodimer significantly inhibited EV71 replication and induced the production of interleukin (IL)-8 via activation of the phosphoinositide 3-kinase/protein kinase B (PI3K/AKT) and mitogen-activated protein kinase (MAPK) pathways. Furthermore,human-mouse chimeric TLR2 heterodimer inhibited EV71 replication and activated innate immunity. Dominant-negative TIR-less (DN)-TLR1/2/4/6 did not exert any inhibitory effects, whereas DN-TLR2 heterodimer inhibited EV71 replication. Prokaryotic expression of purified recombinant EV71 capsid proteins (VP1, VP2, VP3, and VP4) or overexpression of EV71 capsid proteins induced the production of IL-6 and IL-8 via activation of the PI3K/AKT and MAPK pathways. Notably, two types of EV71 capsid proteins served as pathogen-associated molecular patterns for TLR monomers (TLR2 and TLR4) and TLR2 heterodimer (TLR2/TLR1, TLR2/TLR6, and TLR2/TLR4) and activated innate immunity. Collectively, our results revealed that membrane TLRs inhibited EV71 replication via activation of the antiviral innate response, providing insights into the EV71 innate immune activation mechanism.
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Affiliation(s)
- Ping-Ping Sun
- Department of Pathogenic Biology, College of Basic Medicine, Chengde Medical University, Chengde, Hebei, China
| | - Dan Li
- Department of Pathogenic Biology, College of Basic Medicine, Chengde Medical University, Chengde, Hebei, China
| | - Meng Su
- Department of Pathogenic Biology, College of Basic Medicine, Chengde Medical University, Chengde, Hebei, China
| | - Qing Ren
- Department of Pathogenic Biology, College of Basic Medicine, Chengde Medical University, Chengde, Hebei, China
| | - Wen-Ping Guo
- Department of Pathogenic Biology, College of Basic Medicine, Chengde Medical University, Chengde, Hebei, China
| | - Jiang-Li Wang
- Department of Microbiology Laboratory, Chengde Center for Disease Control and Prevention, Chengde, Hebei, China
| | - Luan-Ying Du
- Department of Pathogenic Biology, College of Basic Medicine, Chengde Medical University, Chengde, Hebei, China
| | - Guang-Cheng Xie
- Department of Pathogenic Biology, College of Basic Medicine, Chengde Medical University, Chengde, Hebei, China
- Institute of Basic Medicine, College of Basic Medicine, Chengde Medical University, Chengde, Hebei, China
- *Correspondence: Guang-Cheng Xie,
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Sinha M, Zabini D, Guntur D, Nagaraj C, Enyedi P, Olschewski H, Kuebler WM, Olschewski A. Chloride channels in the lung: Challenges and perspectives for viral infections, pulmonary arterial hypertension, and cystic fibrosis. Pharmacol Ther 2022; 237:108249. [PMID: 35878810 DOI: 10.1016/j.pharmthera.2022.108249] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/06/2022] [Accepted: 07/11/2022] [Indexed: 10/16/2022]
Abstract
Fine control over chloride homeostasis in the lung is required to maintain membrane excitability, transepithelial transport as well as intra- and extracellular ion and water homeostasis. Over the last decades, a growing number of chloride channels and transporters have been identified in the cells of the pulmonary vasculature and the respiratory tract. The importance of these proteins is underpinned by the fact that impairment of their physiological function is associated with functional dysregulation, structural remodeling, or hereditary diseases of the lung. This paper reviews the field of chloride channels and transporters in the lung and discusses chloride channels in disease processes such as viral infections including SARS-CoV- 2, pulmonary arterial hypertension, cystic fibrosis and asthma. Although chloride channels have become a hot research topic in recent years, remarkably few of them have been targeted by pharmacological agents. As such, we complement the putative pathophysiological role of chloride channels here with a summary of their therapeutic potential.
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Affiliation(s)
- Madhushri Sinha
- Experimental Anaesthesiology, Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036 Graz, Austria.
| | - Diana Zabini
- Department of Physiology, Neue Stiftingtalstrasse 6/V, 8010 Graz, Austria.
| | - Divya Guntur
- Experimental Anaesthesiology, Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036 Graz, Austria.
| | - Chandran Nagaraj
- Ludwig Boltzmann Institute for Lung Vascular Research, Neue Stiftingtalstraße 6, 8010 Graz, Austria.
| | - Peter Enyedi
- Department of Physiology, Semmelweis University, Tűzoltó utca 37-47, 1094 Budapest, Hungary.
| | - Horst Olschewski
- Department of Internal Medicine, Division of Pulmonology, Medical University of Graz, Auenbruggerplatz 15, 8036 Graz, Austria.
| | - Wolfgang M Kuebler
- Institute of Physiology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
| | - Andrea Olschewski
- Experimental Anaesthesiology, Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036 Graz, Austria; Ludwig Boltzmann Institute for Lung Vascular Research, Neue Stiftingtalstraße 6, 8010 Graz, Austria.
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Yuan L, Li J, Yang Y, Guo X, Liu X, Li L, Zhu X, Liu R. [Pathogenic role leukotriene B4 in lung injury induced by lung-protective mechanical ventilation in rabbits]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2020; 40:1465-1471. [PMID: 33118515 DOI: 10.12122/j.issn.1673-4254.2020.10.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To elucidate the pathogenic role of leukotriene B4 (LTB4) in pulmonary hyper-permeability and inflammation induced by lung-protective mechanical ventilation (LPMV) in rabbits. METHODS Thirty-two healthy Japanese white rabbits were randomized into 4 groups for treatment with vehicle or bestatin (a leukotriene A4 hydrolase inhibitor that inhibits LTB4 production) administered intragastrically at the daily dose of 8 mg/kg for 5 days, followed by sham operation (group S and group BS, respectively, in which the rabbits were anesthetized only) or LPMV (group PM and group BPM, respectively, in which the rabbits received ventilation with 50% oxygen at a tidal volume of 8 mL/kg for 5 h). The concentrations of LTB4 and cyclic adenosine monophosphate (cAMP) in the lung tissues were analyzed by ELISA. cAMP content, protein kinase A (PKA) protein expression and the Rap1-GTP protein to total Rap1 protein ratio were determined to assess the activities of cAMP/PKA and Rap1 signaling pathways. The lung injury was evaluated by assessing lung permeability index, lung wet/dry weight ratio, polymorphonuclear leukocyte (PMN) count in bronchoalveolar lavage fluid (BALF), pulmonary myeloperoxidase (MPO) activity and lung histological scores. RESULTS None of the examined parameters differed significantly between group S and group BS. All the parameters with the exception of lung histological score increased significantly in group PM and group BPM as compared to those in group S (P < 0.05). Compared with those in PM group, the rabbits in group BPM showed significantly reduced LTB4 production in the lungs (P < 0.05), up-regulated cAMP/ PKA and Rap1 signaling pathway activities (P < 0.05), and alleviated lung hyper-permeability and inflammation (P < 0.05). CONCLUSIONS LPMV can induce LTB4 overproduction to down-regulate cAMP/PKA and Rap1 signaling pathways in the lungs of rabbits, which results in lung hyper-permeability and inflammation. Bestatin can inhibit LTB4 production in the lungs to protect against LPMV-induced lung hyper-permeability and inflammation.
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Affiliation(s)
- Lingyue Yuan
- Department of Anesthesiology, Third People's Hospital of Yunnan Province, Kunming 650011, China
| | - Jiang Li
- Department of Anesthesiology, First People's Hospital of Yunnan Province, Kunming 650032, China
| | - Yong Yang
- Experimental Center of Medical Function, Kunming Medical University, Kunming 650500, China
| | - Xin Guo
- Department of Anesthesiology, First People's Hospital of Yunnan Province, Kunming 650032, China
| | - Xingling Liu
- Department of Anesthesiology, First People's Hospital of Yunnan Province, Kunming 650032, China
| | - Lisha Li
- Department of Anesthesiology, First People's Hospital of Yunnan Province, Kunming 650032, China
| | - Xiaoyan Zhu
- Department of Anesthesiology, First People's Hospital of Yunnan Province, Kunming 650032, China
| | - Rui Liu
- Department of Anesthesiology, First People's Hospital of Yunnan Province, Kunming 650032, China
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Mishra J, Simonsen R, Kumar N. Intestinal breast cancer resistance protein (BCRP) requires Janus kinase 3 activity for drug efflux and barrier functions in obesity. J Biol Chem 2019; 294:18337-18348. [PMID: 31653704 DOI: 10.1074/jbc.ra119.007758] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 10/07/2019] [Indexed: 12/12/2022] Open
Abstract
Breast cancer resistance protein (BCRP) is a member of ATP-binding cassette (ABC) transporter proteins whose primary function is to efflux substrates bound to the plasma membrane. Impaired intestinal barrier functions play a major role in chronic low-grade inflammation (CLGI)-associated obesity, but the regulation of BCRP during obesity and its role in maintaining the intestinal barrier function during CLGI-associated obesity are unknown. In the present study, using several approaches, including efflux assays, immunoprecipitation, immunoblotting, immunohistochemistry, paracellular permeability assay, FACS, cytokine assay, and immunofluorescence microscopy, we report that obese individuals have compromised intestinal BCRP functions and that diet-induced obese mice recapitulate these outcomes. We demonstrate that the compromised BCRP functions during obesity are because of loss of Janus kinase 3 (JAK3)-mediated tyrosine phosphorylation of BCRP. Our results indicate that JAK3-mediated phosphorylation of BCRP promotes its interactions with membrane-localized β-catenin essential not only for BCRP expression and surface localization, but also for the maintenance of BCRP-mediated intestinal drug efflux and barrier functions. We observed that reduced intestinal JAK3 expression during human obesity or JAK3 knockout in mouse or siRNA-mediated β-catenin knockdown in human intestinal epithelial cells all result in significant loss of intestinal BCRP expression and compromised colonic drug efflux and barrier functions. Our results uncover a mechanism of BCRP-mediated intestinal drug efflux and barrier functions and establish a role for BCRP in preventing CLGI-associated obesity both in humans and in mice.
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Affiliation(s)
- Jayshree Mishra
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A & M Health Science Center, Kingsville, Texas 78363.
| | | | - Narendra Kumar
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A & M Health Science Center, Kingsville, Texas 78363
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Xu JB, Zhang YL, Huang J, Lu SJ, Sun Q, Chen PX, Jiang P, Qiu ZE, Jiang FN, Zhu YX, Lai DH, Zhong WD, Lun ZR, Zhou WL. Increased intracellular Cl - concentration mediates Trichomonas vaginalis-induced inflammation in the human vaginal epithelium. Int J Parasitol 2019; 49:697-704. [PMID: 31254529 DOI: 10.1016/j.ijpara.2019.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 04/01/2019] [Accepted: 04/03/2019] [Indexed: 11/15/2022]
Abstract
Trichomonas vaginalis is a primary urogenital parasite that causes trichomoniasis, a common sexually transmitted disease. As the first line of host defense, vaginal epithelial cells play critical roles in orchestrating vaginal innate immunity and modulate intracellular Cl- homeostasis via the cystic fibrosis transmembrane conductance regulator (CFTR), an anion channel that plays positive roles in regulating nuclear factor-κB (NF-κB) signalling. However, the association between T. vaginalis infection and intracellular Cl- disequilibrium remains elusive. This study showed that after T. vaginalis infection, CFTR was markedly down-regulated by cysteine proteases in vaginal epithelial cells. The intracellular Cl- concentration ([Cl-]i) was consequently elevated, leading to NF-κB signalling activation via serum- and glucocorticoid-inducible kinase-1. Moreover, heightened [Cl-]i and activated NF-κB signalling could be sustained in a positive feedback regulatory manner resulting from decreased intracellular cAMP through NF-κB-mediated up-regulation of phosphodiesterase 4. The results conclusively revealed that the intracellular Cl- of the human vaginal epithelium could be dynamically modulated by T. vaginalis, which contributed to mediation of epithelial inflammation in the human vagina.
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Affiliation(s)
- Jian-Bang Xu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yi-Lin Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jiehong Huang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shen-Jiao Lu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Qing Sun
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Peng-Xiao Chen
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ping Jiang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zhuo-Er Qiu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Fu-Neng Jiang
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yun-Xin Zhu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - De-Hua Lai
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wei-De Zhong
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.
| | - Zhao-Rong Lun
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
| | - Wen-Liang Zhou
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
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Zhang YL, Chen PX, Guan WJ, Guo HM, Qiu ZE, Xu JW, Luo YL, Lan CF, Xu JB, Hao Y, Tan YX, Ye KN, Lun ZR, Zhao L, Zhu YX, Huang J, Ko WH, Zhong WD, Zhou WL, Zhong NS. Increased intracellular Cl - concentration promotes ongoing inflammation in airway epithelium. Mucosal Immunol 2018; 11:1149-1157. [PMID: 29545647 DOI: 10.1038/s41385-018-0013-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 01/19/2018] [Accepted: 01/21/2018] [Indexed: 02/07/2023]
Abstract
Airway epithelial cells harbor the capacity of active Cl- transepithelial transport and play critical roles in modulating innate immunity. However, whether intracellular Cl- accumulation contributes to relentless airway inflammation remains largely unclear. This study showed that, in airway epithelial cells, intracellular Cl- concentration ([Cl-]i) was increased after Pseudomonas aeruginosa lipopolysaccharide (LPS) stimulation via nuclear factor-κB (NF-κB)-phosphodiesterase 4D (PDE4D)-cAMP signaling pathways. Clamping [Cl-]i at high levels or prolonged treatment with LPS augmented serum- and glucocorticoid-inducible protein kinase 1 (SGK1) phosphorylation and subsequently triggered NF-κB activation in airway epithelial cells, whereas inhibition of SGK1 abrogated airway inflammation in vitro and in vivo. Furthermore, Cl--SGK1 signaling pathway was pronouncedly activated in patients with bronchiectasis, a chronic airway inflammatory disease. Conversely, hydrogen sulfide (H2S), a sulfhydryl-containing gasotransmitter, confers anti-inflammatory effects through decreasing [Cl-]i via activation of cystic fibrosis transmembrane conductance regulator (CFTR). Our study confirms that intracellular Cl- is a crucial mediator of sustained airway inflammation. Medications that abrogate excessively increased intracellular Cl- may offer novel targets for the management of airway inflammatory diseases.
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Affiliation(s)
- Yi-Lin Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Peng-Xiao Chen
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wei-Jie Guan
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute for Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China.,Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Hong-Mei Guo
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China.,Biology and Food Engineering Institute, Guangdong University of Education, Guangzhou, China
| | - Zhuo-Er Qiu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jia-Wen Xu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yu-Li Luo
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chong-Feng Lan
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jian-Bang Xu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yuan Hao
- School of Biomedical Sciences, The Chinese University of Hong Kong, N. T., China, China
| | - Ya-Xia Tan
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute for Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China
| | - Ke-Nan Ye
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zhao-Rong Lun
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Lei Zhao
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China
| | - Yun-Xin Zhu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jiehong Huang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wing-Hung Ko
- School of Biomedical Sciences, The Chinese University of Hong Kong, N. T., China, China
| | - Wei-De Zhong
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Wen-Liang Zhou
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
| | - Nan-Shan Zhong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute for Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China.
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10
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Duijvis NW, Moerland PD, Kunne C, Slaman MMW, van Dooren FH, Vogels EW, de Jonge WJ, Meijer SL, Fluiter K, te Velde AA. Inhibition of miR-142-5P ameliorates disease in mouse models of experimental colitis. PLoS One 2017; 12:e0185097. [PMID: 29059189 PMCID: PMC5653202 DOI: 10.1371/journal.pone.0185097] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 09/06/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND MicroRNAs (miRNAs) are epigenetically involved in regulating gene expression. They may be of importance in the pathogenesis of inflammatory bowel disease (IBD). The aim of this study was to determine the role of miRNAs by their specific blocking in the CD4+CB45RBhi T-cell transfer model of chronic experimental colitis. METHODS Colitis caused by transfer of WT CD4+CD45RBhi T cells in severe combined immunodeficiency (SCID) mice shares many features with human IBD. Colonic miRNA expression levels were measured at three time points in colitic mice, where a time-dependent upregulation of multiple miRNAs was seen. To inhibit these miRNAs, specific locked-nucleic-acid-modified (LNA) oligonucleotides were administered in further experiments at the moment the mice demonstrated the first signs of colitis. As controls, PBS and a scrambled sequence of anti-miRNA were used. Genome-wide expression analyses were also performed in order to detect candidate target genes of miR-142-5p, of which inhibition resulted in most effective amelioration of colitis. RESULTS Anti-miR-142-5p reduced colitis and related wasting disease when administered in the T-cell transfer model, reflected in reduced weight loss and a lower disease activity index (DAI). In further validation experiments we also observed a higher survival rate and less colonic histological inflammation in the antagomir-treated mice. Moreover, by genome-wide expression analyses, we found downstream activation of the anti-inflammatory IL10RA pathway, including three genes also found in the top-20 candidate target genes of miR-142-5p. CONCLUSION In conclusion, CD4+CD45RBhi-transfer colitis induces miR-142-5p. Blocking miR-142-5p reduced colitis and prevented wasting disease, possibly by activation of the IL10RA pathway.
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Affiliation(s)
- Nicolette W. Duijvis
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center (AMC), Amsterdam, the Netherlands
- * E-mail: (NWD); (AAV)
| | - Perry D. Moerland
- Bioinformatics Laboratory, Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, Amsterdam, the Netherlands
| | - Cindy Kunne
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center (AMC), Amsterdam, the Netherlands
| | - Monique M. W. Slaman
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center (AMC), Amsterdam, the Netherlands
| | - Faas H. van Dooren
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center (AMC), Amsterdam, the Netherlands
| | - Esther W. Vogels
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center (AMC), Amsterdam, the Netherlands
| | - Wouter J. de Jonge
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center (AMC), Amsterdam, the Netherlands
| | - Sybren L. Meijer
- Department of Pathology, Academic Medical Center (AMC), Amsterdam, the Netherlands
| | - Kees Fluiter
- Department of Clinical Genetics, Academic Medical Center (AMC), Amsterdam, the Netherlands
| | - Anje A. te Velde
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center (AMC), Amsterdam, the Netherlands
- * E-mail: (NWD); (AAV)
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Huang Q, Wang K, Pan L, Qi K, Liu H, Chen H. Co-infection of H9N2 subtype avian influenza virus and infectious bronchitis virus decreases SP-A expression level in chickens. Vet Microbiol 2017; 203:110-116. [PMID: 28619132 DOI: 10.1016/j.vetmic.2017.02.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 02/20/2017] [Accepted: 02/24/2017] [Indexed: 01/09/2023]
Abstract
Chicken surfactant protein A (cSP-A) is a collectin believed to play an important role in antiviral immunity. However, cSP-A expression in the respiratory tract of chickens after viral co-infection remains unclear. The aim of this study was the detection and characterization of cSP-A in co-infected chickens. For this purpose, four-week-old specific pathogen-free (SPF) chickens were divided into five groups and inoculated intranasally with H9N2 subtype avian influenza virus (AIV), infectious bronchitis virus (IBV), or Newcastle disease virus (NDV). Chickens were sacrificed at three days post inoculation, and the lung, trachea, and air sac samples were taken to determine histological changes and expression levels of cSP-A mRNA and cSP-A protein. The cSP-A mRNA and its protein were detected separately using real-time quantitative reverse transcriptional polymerase chain reaction (qRT-PCR), a sandwich enzyme-linked immunosorbent assay (S-ELISA), and an immunohistochemistry assay (IHC). In comparison, for the PBS group as the negative group and the NDV-infected group as the positive group, the histological changes showed that the lesions of the AIV+ IBV co-infected group were more serious compared to the AIV-infected group and the IBV-infected group. Consequently, the expression level of cSP-A in the AIV+IBV co-infected group significantly decreased when compared to the AIV-infected group and the IBV-infected group by qRT-PCR, ELISA, and IHC analysis. The mechanism of the downregulation of SP-A expression level will be addressed in future.
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Affiliation(s)
- Qi Huang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, PR China; Shanghai Veterinary Research Institute, Chinese Academic of Agricultural Sciences, Shanghai, 200241 PR China
| | - Kai Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, PR China; Shanghai Veterinary Research Institute, Chinese Academic of Agricultural Sciences, Shanghai, 200241 PR China
| | - Ling Pan
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, PR China
| | - Kezong Qi
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, PR China
| | - Hongmei Liu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, PR China.
| | - Hongjun Chen
- Shanghai Veterinary Research Institute, Chinese Academic of Agricultural Sciences, Shanghai, 200241 PR China.
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Schwingshackl A. The role of stretch-activated ion channels in acute respiratory distress syndrome: finally a new target? Am J Physiol Lung Cell Mol Physiol 2016; 311:L639-52. [PMID: 27521425 DOI: 10.1152/ajplung.00458.2015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 08/05/2016] [Indexed: 02/06/2023] Open
Abstract
Mechanical ventilation (MV) and oxygen therapy (hyperoxia; HO) comprise the cornerstones of life-saving interventions for patients with acute respiratory distress syndrome (ARDS). Unfortunately, the side effects of MV and HO include exacerbation of lung injury by barotrauma, volutrauma, and propagation of lung inflammation. Despite significant improvements in ventilator technologies and a heightened awareness of oxygen toxicity, besides low tidal volume ventilation few if any medical interventions have improved ARDS outcomes over the past two decades. We are lacking a comprehensive understanding of mechanotransduction processes in the healthy lung and know little about the interactions between simultaneously activated stretch-, HO-, and cytokine-induced signaling cascades in ARDS. Nevertheless, as we are unraveling these mechanisms we are gathering increasing evidence for the importance of stretch-activated ion channels (SACs) in the activation of lung-resident and inflammatory cells. In addition to the discovery of new SAC families in the lung, e.g., two-pore domain potassium channels, we are increasingly assigning mechanosensing properties to already known Na(+), Ca(2+), K(+), and Cl(-) channels. Better insights into the mechanotransduction mechanisms of SACs will improve our understanding of the pathways leading to ventilator-induced lung injury and lead to much needed novel therapeutic approaches against ARDS by specifically targeting SACs. This review 1) summarizes the reasons why the time has come to seriously consider SACs as new therapeutic targets against ARDS, 2) critically analyzes the physiological and experimental factors that currently limit our knowledge about SACs, and 3) outlines the most important questions future research studies need to address.
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