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Ma J, Gong T, Luo T, Li S, Zhong L, Zhao X, Mei C, Bu H, Jia Z, Kuang X, Wang X, Fu Z, Tian D. Exacerbated lung inflammation in offspring with high maternal antibody levels following secondary RSV exposure. Front Immunol 2024; 15:1377374. [PMID: 38745662 PMCID: PMC11091276 DOI: 10.3389/fimmu.2024.1377374] [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: 02/14/2024] [Accepted: 04/17/2024] [Indexed: 05/16/2024] Open
Abstract
Respiratory syncytial virus (RSV) is the primary cause of bronchiolitis-related hospitalizations among children under 5 years of age, with reinfection being common throughout life. Maternal vaccination has emerged as a promising strategy, delivering elevated antibody levels to newborns for immediate protection. However, limited research has explored the protective efficacy of maternal antibodies (matAbs) against secondary RSV infections in offspring. To address this gap, we employed a mouse model of maternal RSV vaccination and secondary infection of offspring to evaluate lung pathology following RSV reinfection in mice with varying levels of maternal antibody (matAb). Additionally, we aimed to investigate the potential causes of exacerbated lung inflammation in offspring with high matAb levels following secondary RSV exposure. Our findings revealed that offspring with elevated levels of maternal pre-F antibody demonstrated effective protection against lung pathology following the initial RSV infection. However, this protection was compromised upon reinfection, manifesting as heightened weight loss, exacerbated lung pathology, increased expression of RSV-A N genes, eosinophilia, enhanced IL-5, IL-13, MUC5AC, and eosinophils Major Basic Protein (MBP) production in lung tissue compared to offspring lacking matAbs. Importantly, these unexpected outcomes were not attributed to antibody-dependent enhancement (ADE) resulting from declining matAb levels over time. Notably, our findings showed a decline in secretory IgA (sIgA), mucosal IgA, and mucosal IgG levels in offspring with high matAb levels post-primary RSV challenge. We propose that this decline may be a critical factor contributing to the ineffective protection observed during secondary RSV exposure. Overall, these findings offer valuable insights into maternal vaccination against RSV, contributing to a comprehensive understanding and mitigation of potential risks associated with maternal RSV vaccination.
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Affiliation(s)
- Jinhua Ma
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Ting Gong
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Tingting Luo
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Shuanglian Li
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Li Zhong
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Xin Zhao
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Chenghao Mei
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Huaqin Bu
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Zhenxing Jia
- Department of mAbs Discovery, Zhuhai Trinomab Pharmaceutical Co., Ltd, Zhuhai, China
| | - Xiaohu Kuang
- Department of mAbs Discovery, Zhuhai Trinomab Pharmaceutical Co., Ltd, Zhuhai, China
| | - Xiaoli Wang
- Department of mAbs Discovery, Zhuhai Trinomab Pharmaceutical Co., Ltd, Zhuhai, China
| | - Zhou Fu
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Daiyin Tian
- Department of Respiratory Medicine Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
- Department of Respiratory Medicine, Yibin Hospital Affiliated to Children’s Hospital of Chongqing Medical University, Yibin, China
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Che S, Xie X, Lin J, Liu Y, Xie J, Liu E. Andrographolide Attenuates RSV-induced Inflammation by Suppressing Apoptosis and Promoting Pyroptosis after Respiratory Syncytial Virus Infection In Vitro. Comb Chem High Throughput Screen 2024; 27:1776-1787. [PMID: 37957849 DOI: 10.2174/0113862073256465231024075452] [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: 04/04/2023] [Revised: 08/30/2023] [Accepted: 09/21/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND Respiratory syncytial virus (RSV), which is the predominant viral pathogen responsible for causing acute lower respiratory tract infections in children, currently lacks specific therapeutic drugs. Despite andrographolide's demonstrated effectiveness against various viral infections, its effects on RSV infection remain unclear. METHODS In this study, RSV infection and andrographolide-intervened A549 cell lines were used. The virus load of RSV and the levels of IL-6 and IL-8 in the cell supernatant were quantified. The potential targets of andrographolide in the treatment of RSV-infected airway epithelial cells were analyzed using the Gene Expression Omnibus (GEO) database and the PharmMapper Database, and the changes in mRNA expression of these target genes were measured. To further illustrate the effect of andrographolide on the death pattern of RSV-infected airway epithelial cells, Annexin V-FITC/PI apoptosis assays and Western blotting were conducted. RESULTS Andrographolide decreased the viral load and attenuated IL-6 and IL-8 levels in cell supernatant post-RSV infection. A total of 25 potential targets of andrographolide in the treatment of RSV-infected airway epithelial cells were discovered, and CASP1, CCL5, JAK2, and STAT1 were identified as significant players. Andrographolide noticeably suppressed the increased mRNA expressions of these genes post-RSV infection as well as IL-1β. The flow cytometry analysis demonstrated that andrographolide alleviated apoptosis in RSV-infected cells. Additionally, RSV infection decreased the protein levels of caspase-1, cleaved caspase-1, cleaved IL-1β, N-terminal of GSDMD, and Bcl-2. Conversely, andrographolide increased their levels. CONCLUSION These results suggest that andrographolide may reduce RSV-induced inflammation by suppressing apoptosis and promoting pyroptosis in epithelial cells, leading to effective viral clearance.
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Affiliation(s)
- Siyi Che
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Xiaohong Xie
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Jilei Lin
- Department of Respiratory Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ying Liu
- State Key Laboratory of Innovative Natural Medicine and TCM Injections, Jiangxi Qingfeng Pharmaceutical co. LTD, Ganzhou, China
| | - Jun Xie
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Enmei Liu
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
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3
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Che S, Zhou N, Liu Y, Xie J, Liu E. Andrographolide exerts anti-respiratory syncytial virus activity by up-regulating heme oxygenase-1 independent of interferon responses in human airway epithelial cells. Mol Biol Rep 2023; 50:4261-4272. [PMID: 36918433 PMCID: PMC10013987 DOI: 10.1007/s11033-023-08346-z] [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: 08/11/2022] [Accepted: 02/17/2023] [Indexed: 03/15/2023]
Abstract
BACKGROUND Respiratory syncytial virus (RSV) is the leading cause of mortality and morbidity in children under the age of five. Despite this, there is still a lack of safe and effective vaccines and antiviral agents for clinical use. Andrographolide exerts antiviral functions against a variety of viruses, but whether (and how) it exerts antiviral effects on RSV remains unclear. METHODS AND RESULTS In vitro RSV infection models using A549 and 16HBE cell lines were established, and the effects of andrographolide on RSV were analyzed via RSV N gene load and proinflammatory cytokine levels. The RNA transcriptome was sequenced, and data were analyzed by R software. Andrographolide-related target genes were extracted via network pharmacology using online databases. Lentiviral transfection was applied to knockdown the heme oxygenase-1 gene (Hmox1, HO-1). Results showed that andrographolide suppressed RSV replication and attenuated subsequent inflammation. Network pharmacology and RNA sequencing analysis indicated that the hub gene HO-1 may play a pivotal role in the anti-RSV effects of andrographolide. Furthermore, andrographolide exerted antiviral effects against RSV partially by inducing HO-1 but did not activate the antiviral interferon response. CONCLUSION Our findings demonstrated that andrographolide exerted anti-RSV activity by up-regulating HO-1 expression in human airway epithelial cells, providing novel insights into potential therapeutic targets and drug repurposing in RSV infection.
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Affiliation(s)
- Siyi Che
- Department of Respiratory Medicine, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, China
| | - Na Zhou
- Department of Respiratory Medicine, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, China
| | - Ying Liu
- State Key Laboratory of Innovative Natural Medicine and TCM Injections, Jiangxi Qingfeng Pharmaceutical Co. Ltd, Ganzhou, 341000, China
| | - Jun Xie
- Department of Respiratory Medicine, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, China.
| | - Enmei Liu
- Department of Respiratory Medicine, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, China.
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Chen S, Tang W, Yu G, Tang Z, Liu E. CXCL12/CXCR4 Axis is Involved in the Recruitment of NK Cells by HMGB1 Contributing to Persistent Airway Inflammation and AHR During the Late Stage of RSV Infection. J Microbiol 2023; 61:461-469. [PMID: 36781697 DOI: 10.1007/s12275-023-00018-8] [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: 09/07/2022] [Revised: 12/19/2022] [Accepted: 01/02/2023] [Indexed: 02/15/2023]
Abstract
We previously showed that both high-mobility group box-1 (HMGB1) and natural killer (NK) cells contribute to respiratory syncytial virus (RSV)-induced persistent airway inflammation and airway hyperresponsiveness (AHR). Meanwhile, Chemokine (C-X-C motif) ligand 12 (CXCL12) and its specific receptor (chemokine receptor 4, CXCR4) play important roles in recruitment of immune cells. CXCL12 has been reported to form a complex with HMGB1 that binds to CXCR4 and increases inflammatory cell migration. The relationship between HMGB1, NK cells and chemokines in RSV-infected model remains unclear. An anti-HMGB1 neutralizing antibody and inhibitor of CXCR4 (AMD3100) was administered to observe changes of NK cells and airway disorders in nude mice and BALB/c mice. Results showed that the mRNA expression and protein levels of HMGB1 were elevated in late stage of RSV infection and persistent airway inflammation and AHR were diminished after administration of anti-HMGB1 antibodies, with an associated significant decrease in CXCR4+ NK cells. In addition, CXCL12 and CXCR4 were reduced after HMGB1 blockade. Treatment with AMD3100 significantly suppressed the recruitment of NK cells and alleviated the airway disorders. Thus, CXCL12/CXCR4 axis is involved in the recruitment of NK cells by HMGB1, contributing to persistent airway inflammation and AHR during the late stage of RSV infection.
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Affiliation(s)
- Sisi Chen
- Chongqing Medical and Pharmaceutical College, Chongqing, 401331, People's Republic of China.,Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, People's Republic of China
| | - Wei Tang
- Respiratory Department, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610073, People's Republic of China
| | - Guangyuan Yu
- Department of Respiratory Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, Guangdong, People's Republic of China
| | - Zhengzhen Tang
- Department of Pediatrics, The Third Affiliated Hospital Medical University (the First People's Hospital of Zunyi), Zunyi, 563000, People's Republic of China
| | - Enmei Liu
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, People's Republic of China.
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Bak Y, Park SC, Shim D, Ha Y, Lee J, Kim H, Kwon KW, Yoon JH, Shin SJ. Exacerbation of Mycobacterium avium pulmonary infection by comorbid allergic asthma is associated with diminished mycobacterium-specific Th17 responses. Virulence 2021; 12:2546-2561. [PMID: 34605365 PMCID: PMC8496529 DOI: 10.1080/21505594.2021.1979812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Accumulating evidence suggests that two chronic respiratory diseases, nontuberculous mycobacterium (NTM)-pulmonary disease (PD) and allergic asthma, are frequently present together and that they likely influence the disease development and progression of each other. However, their precise interactions regarding the pathogenesis of comorbid diseases versus that of individual diseases are not well understood. In this study, comorbid diseases (i.e., Mycobacteria avium (Mav) pulmonary infection (PI) (Mav-PI) and ovalbumin-induced allergic asthma) were established in mice in different orders and at different time periods. Individual disease-specific characteristics, including alterations in immune cell populations and antigen-specific immune responses, were analyzed and compared. To assess Mav-PI pathogenesis, lung inflammation and bacterial burden levels were also determined. Allergic asthma induction in the presence of Mav-PI markedly aggravated Mav-PI pathogenesis by increasing the bacterial burden and the severity of lung inflammation. Interestingly, the general outcome of allergic asthma with goblet cell hyperplasia was alleviated at a chronic stage in the comorbid mouse model. Overall, the increase in the number of Mav CFUs was inversely correlated with the Mav-specific Th17 response, as confirmed by comparing BALB/c and C57BL/6J mice. Overall, the pathogenesis of existing Mav-PI is more severely affected by allergen exposure than vice versa. This Mav-PI exacerbation is associated with disruption of Mav-specific Th17 responses. This study provides the first evidence that the Mav-specific Th17 response plays an important role in the control of Mav pathogenesis in the presence of allergic asthma, indicating that targeting the Th17 response has therapeutic potential for NTM-PD accompanied by allergic asthma.
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Affiliation(s)
- Yeeun Bak
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Chul Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Dahee Shim
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea
| | - Yura Ha
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Korea
| | - Jumi Lee
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Korea
| | - Hongmin Kim
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Korea
| | - Kee Woong Kwon
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Korea
| | - Joo-Heon Yoon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.,Global Research Laboratory for Allergic Airway Diseases, Yonsei University College of Medicine, Seoul, Korea.,The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Jae Shin
- Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Korea.,Global Research Laboratory for Allergic Airway Diseases, Yonsei University College of Medicine, Seoul, Korea.,Department of Microbiology, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea
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BCG for the prevention and treatment of allergic asthma. Vaccine 2021; 39:7341-7352. [PMID: 34417052 DOI: 10.1016/j.vaccine.2021.07.092] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/20/2021] [Accepted: 07/30/2021] [Indexed: 12/30/2022]
Abstract
Allergic diseases, in particular atopic asthma, have been on the rise in most industrialized countries for several decades now. Allergic asthma is characterized by airway narrowing, bronchial hyperresponsiveness, excessive airway mucus production, eosinophil influx in the lungs and an imbalance of the Th1/Th2 responses, including elevated IgE levels. Most available interventions provide only short-term relief from disease symptoms and do not alter the underlying immune imbalance. A number of studies, mostly in mouse models, have shown that Mycobacterium bovis bacillus Calmette-Guérin (BCG) treatment is capable of preventing or reducing an established allergen-driven inflammatory response, by redirecting pathogenic Th2 towards protective Th1 and/or regulatory T cell responses. Dendritic cells stimulated by BCG appear to be a crucial first step in the immunomodulatory effects of BCG. While the protective and therapeutic effects of BCG against allergy and asthma are well documented in animal models, they are less clear in humans, both in observational studies and in randomized controlled trials. The purpose of this article is to provide an up-to-date overview of the available evidence on the anti-allergy, in particular anti-asthma effects of BCG in mice, rats and humans.
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Respiratory syncytial virus activates Rab5a to suppress IRF1-dependent IFN-λ production, subverting the antiviral defense of airway epithelial cells. J Virol 2021; 95:JVI.02333-20. [PMID: 33504607 PMCID: PMC8103688 DOI: 10.1128/jvi.02333-20] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The limited antiviral options and lack of an effective vaccine against human respiratory syncytial virus (RSV) highlight the need for a novel antiviral therapy. One alternative is to identify and target the host factors required for viral infection. Here, using RNA interference to knock down Rab proteins, we provide multiple lines of evidence that Rab5a is required for RSV infection: (a) Rab5a is upregulated both in RSV-A2-infected A549 cells and RSV-A2-challenged BALB/c mice's airway epithelial cells at early infection phase; (b) shRNA-mediated knockdown of Rab5a is associated with reduced lung pathology in RSV A2 challenged mice; (c) Rab5a expression is correlated with disease severity of RSV infection of infants. Knockdown of Rab5a increases IFN-λ (lambda) production by mediating IRF1 nuclear translocation. Our results highlight a new role for Rab5a in RSV infection, such that its depletion inhibits RSV infection by stimulating the endogenous respiratory epithelial antiviral immunity, which suggests that Rab5a is a potential target for novel therapeutics against RSV infection.Importance This study highlights the important role of Rab5a in RSV infection, such that its depletion inhibits RSV infection by stimulating the endogenous respiratory epithelial antiviral immunity and attenuates inflammation of the airway, which suggests that Rab5a is a powerful potential target for novel therapeutics against RSV infection.
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Zhang HT, Wang P, Li Y, Bao YB. SerpinA3n affects ovalbumin (OVA)-induced asthma in neonatal mice via the regulation of collagen deposition and inflammatory response. Respir Physiol Neurobiol 2021; 288:103642. [PMID: 33609775 DOI: 10.1016/j.resp.2021.103642] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/07/2021] [Accepted: 02/13/2021] [Indexed: 01/04/2023]
Abstract
OBJECTIVE To investigate the effects of serine protease inhibitor 3n (SerpinA3n) in a neonatal mouse model of asthma. METHODS The study utilized a neonatal mouse ovalbumin (OVA) sensitization model of asthma. Wild type (WT) and SerpinA3n-/- mice were randomly divided into WT/SerpinA3n-/- + saline, WT/SerpinA3n-/- + OVA, WT/SerpinA3n-/- + OVA + rSerpinA3n (recombinant mouse SerpinA3n protein), and WT/SerpinA3n-/- + OVA + DEX (dexamethasone, positive control) groups followed by hematoxylin-eosin (HE) staining, Masson's trichrome stainings, Sircol soluble collagen assay, quantitative real time polymerase chain reaction (qRT-PCR), Western Blot and enzyme linked immunosorbent assay (ELISA). RESULTS OVA-induced neonatal mice showed the increases in airway hyper-reactivity with the up-regulated total cells, eosinophil, lymphocyte and neutrophil in bronchoalveolar lavage fluid (BALF), which was much higher in WT + OVA + rSerpinA3n group (P < 0.05). SerpinA3n-/- suppressed the serum concentrations of total immunoglobulin E (IgE) and OVA-specific IgG1 in OVA-induced asthmatic mice, and alleviated the pathological changes of lung tissues, which was reversed by rSerpinA3n injection (P < 0.05). Besides, WT + OVA group showed more severe in collagen deposition in lung tissues than SerpinA3n-/- + OVA group with increased expression of matrix metallopeptidase-2 (MMP-2), MMP-9, Eotaxin-1, Interleukin 5 (IL-5), IL-13 and IL-4 in lung tissues and deceased IL-10 and Interferon-gamma (IFN-γ) (P < 0.05). Nevertheless, the ameliorating effects of SerpinA3n knockout on OVA-induced asthmatic mice can be reversed by rSerpinA3n. CONCLUSION SerpinA3n knockout can attenuate airway hyper-reactivity, mitigate inflammatory responses and reduce collagen deposition in lung tissues of neonatal mice with asthma.
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Affiliation(s)
- Hai-Tao Zhang
- Department of Pediatrics, The People's Hospital of Shouguang, Shouguang, 262700, Shandong, China
| | - Ping Wang
- Department of Pediatrics, The People's Hospital of Shouguang, Shouguang, 262700, Shandong, China
| | - Yuan Li
- Department of Pediatrics, The People's Hospital of Shouguang, Shouguang, 262700, Shandong, China
| | - Yong-Bo Bao
- Department of Pediatrics, Zaozhuang Municipal Hospital, Zaozhuang, 277100, Shandong, China.
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Abdelaziz MH, Ji X, Wan J, Abouelnazar FA, Abdelwahab SF, Xu H. Mycobacterium-Induced Th1, Helminths-Induced Th2 Cells and the Potential Vaccine Candidates for Allergic Asthma: Imitation of Natural Infection. Front Immunol 2021; 12:696734. [PMID: 34413850 PMCID: PMC8369065 DOI: 10.3389/fimmu.2021.696734] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 07/19/2021] [Indexed: 02/05/2023] Open
Abstract
Bronchial asthma is one of the most chronic pulmonary diseases and major public health problems. In general, asthma prevails in developed countries than developing countries, and its prevalence is increasing in the latter. For instance, the hygiene hypothesis demonstrated that this phenomenon resulted from higher household hygienic standards that decreased the chances of infections, which would subsequently increase the occurrence of allergy. In this review, we attempted to integrate our knowledge with the hygiene hypothesis into beneficial preventive approaches for allergic asthma. Therefore, we highlighted the studies that investigated the correlation between allergic asthma and the two different types of infections that induce the two major antagonizing arms of T cells. This elucidation reflects the association between various types of natural infections and the immune system, which is predicted to support the main objective of the current research on investigating of the benefits of natural infections, regardless their immune pathways for the prevention of allergic asthma. We demonstrated that natural infection with Mycobacterium tuberculosis (Mtb) prevents the development of allergic asthma, thus Bacille Calmette-Guérin (BCG) vaccine is suggested at early age to mediate the same prevention particularly with increasing its efficiency through genetic engineering-based modifications. Likewise, natural helminth infections might inhabit the allergic asthma development. Therefore, helminth-derived proteins at early age are good candidates for designing vaccines for allergic asthma and it requires further investigation. Finally, we recommend imitation of natural infections as a general strategy for preventing allergic asthma that increased dramatically over the past decades.
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Affiliation(s)
- Mohamed Hamed Abdelaziz
- International Genomics Research Center (IGRC), Institute of Immunology, Jiangsu University, Zhenjiang, China
- Department of Microbiology and Immunology, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
| | - Xiaoyun Ji
- International Genomics Research Center (IGRC), Institute of Immunology, Jiangsu University, Zhenjiang, China
| | - Jie Wan
- International Genomics Research Center (IGRC), Institute of Immunology, Jiangsu University, Zhenjiang, China
- Department of Neuroimmunology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Fatma A. Abouelnazar
- Department of Clinical Laboratory Diagnostics, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Sayed F. Abdelwahab
- Division of Pharmaceutical Microbiology, Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy, Taif University, Taif, Saudi Arabia
- *Correspondence: Huaxi Xu, ; orcid.org/0000-0002-2568-7393; Sayed F. Abdelwahab, ; ; orcid.org/0000-0002-9636-7485
| | - Huaxi Xu
- International Genomics Research Center (IGRC), Institute of Immunology, Jiangsu University, Zhenjiang, China
- *Correspondence: Huaxi Xu, ; orcid.org/0000-0002-2568-7393; Sayed F. Abdelwahab, ; ; orcid.org/0000-0002-9636-7485
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10
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Vitamin A supplement after neonatal Streptococcus pneumoniae pneumonia inhibits the progression of experimental asthma by altering CD4 +T cell subsets. Sci Rep 2020; 10:4214. [PMID: 32144294 PMCID: PMC7060180 DOI: 10.1038/s41598-020-60665-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 02/13/2020] [Indexed: 11/08/2022] Open
Abstract
Studies demonstrated that pneumonia can decrease vitamin A productions and vitamin A reduction/deficiency may promote asthma development. Our previous study showed that neonatal Streptococcus pneumoniae (S. pneumoniae) infection promoted asthma development. Whether neonatal S. pneumoniae pneumonia induced asthma was associated with vitamin A levels remains unclear. The aim of this study was to investigate the effects of neonatal S. pneumoniae pneumonia on vitamin A expressions, to explore the effects of vitamin A supplement after neonatal S. pneumoniae pneumonia on adulthood asthma development. Non-lethal S. pneumoniae pneumonia was established by intranasal inoculation of neonatal (1-week-old) female BALB/c mice with D39. S. pneumoniae pneumonia mice were supplemented with or without all-trans retinoic acid 24 hours after infection. Vitamin A concentrations in lung, serum and liver were measured post pneumonia until early adulthood. Four weeks after pneumonia, mice were sensitized and challenged with OVA to induce allergic airway disease (AAD). Twenty-four hours after the final challenge, the lungs and bronchoalveolar lavage fluid (BALF) were collected to assess AAD. We stated that serum vitamin A levels in neonatal S. pneumoniae pneumonia mice were lower than 0.7µmol/L from day 2-7 post infection, while pulmonary vitamin A productions were significantly lower than those in the control mice from day 7-28 post infection. Vitamin A supplement after neonatal S. pneumoniae pneumonia significantly promoted Foxp3+Treg and Th1 productions, decreased Th2 and Th17 cells expressions, alleviated airway hyperresponsiveness (AHR) and inflammatory cells infiltration during AAD. Our data suggest that neonatal S. pneumoniae pneumonia induce serum vitamin A deficiency and long-time lung vitamin A reduction, vitamin A supplement after neonatal S. pneumoniae pneumonia inhibit the progression of asthma by altering CD4+T cell subsets.
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11
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Zhu X, Chen Q, Liu Z, Luo D, Li L, Zhong Y. Low expression and hypermethylation of FOXP3 in regulatory T cells are associated with asthma in children. Exp Ther Med 2020; 19:2045-2052. [PMID: 32104264 PMCID: PMC7027311 DOI: 10.3892/etm.2020.8443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Accepted: 09/19/2019] [Indexed: 12/16/2022] Open
Abstract
The aim of the present study was to determine the expression and methylation levels of forkhead transcription factor P3 (FOXP3) in peripheral blood CD4+CD25+ regulatory T cells (Tregs) harvested from children with asthma, and to explore the pathogenesis of asthma. The percentages of CD4+CD25+FOXP3+ Tregs in CD4+ T lymphocytes from 15 children with asthma and 15 healthy controls were measured by flow cytometry, and FOXP3 mRNA expression in the CD4+CD25+ Tregs was measured by reverse transcriptase-quantitative PCR. In addition, the forced expiratory volume in one second (FEV1) was measured to determine lung function. The methylation statuses of 16 CpG sites in two regions of the FOXP3 gene's exon and intron were analysed with bisulfite-specific PCR and pyrophosphate sequencing. The differences in methylation levels between the asthma and control groups were compared. The percentage of CD4+CD25+FOXP3+ Tregs in CD4+ T lymphocytes and FOXP3 mRNA expression were significantly lower in children with asthma than in control children (P<0.05). The FOXP3 mRNA levels in children with asthma were positively correlated with FEV1 (P<0.001; r=0.895). The methylation levels in 12 of the 16 studied CpG loci of the FOXP3 gene, and of the 6th CpG locus in the exon regions, were significantly higher in the asthma group compared with the control group (P<0.05). In summary, low expression and hypermethylation of the FOXP3 gene in the peripheral blood were associated with the pathogenesis of asthma in children. Thus, the FOXP3 mRNA expression level can be used to predict the severity of asthma in children.
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Affiliation(s)
- Xiaohua Zhu
- Respiratory Department, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Qiang Chen
- Respiratory Department, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Zhiqiang Liu
- Clinical Laboratory, Jiangxi Children's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Daya Luo
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Lan Li
- Respiratory Department, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Ying Zhong
- Graduate School of Medicine, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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12
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Mustafa AS. Vaccine Potential of Mycobacterial Antigens against Asthma. Med Princ Pract 2020; 29:404-411. [PMID: 32422630 PMCID: PMC7511680 DOI: 10.1159/000508719] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/17/2020] [Indexed: 12/16/2022] Open
Abstract
Asthma is a cause of substantial burden of disease in the world, including both premature deaths and reduced quality of life. A leading hypothesis to explain the worldwide increase of asthma is the "hygiene hypothesis," which suggests that the increase in the prevalence of asthma is due to the reduction in exposure to infections/microbial antigens. In allergic asthma, the most common type of asthma, antigen-specific T helper (Th)2 and Th17 cells and their cytokines are primary mediators of the pathological consequences. In contrast, Th1 and T regulatory (Treg) cells and their cytokines play a protective role. This article aims to review the information on the effect of mycobacteria and their antigens in modulating Th2/Th17 responses towards Th1/Treg responses and protection against asthma in humans and animal models.
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Affiliation(s)
- Abu Salim Mustafa
- Department of Microbiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait,
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13
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Pathogenic difference of respiratory syncytial virus infection in cotton rats of different ages. Microb Pathog 2019; 137:103749. [PMID: 31521801 DOI: 10.1016/j.micpath.2019.103749] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 08/29/2019] [Accepted: 09/12/2019] [Indexed: 01/31/2023]
Abstract
Human respiratory syncytial virus (RSV) is the most common viral pathogen of lower respiratory tract infection worldwide. The virus selectively infects the respiratory epithelium, and causes diseases of variable severity in infants and the elderly. However, the differences in pathogenesis in the age groups remain poorly studied. Age is a major determinant of RSV disease, and the most severe morbidity and mortality occur in the infants and the elderly, because of the immature immunity in infants and declining immunity in old age. The cotton rat is a good model of RSV infection as it is naturally susceptible to RSV. In this study, we established an infant/adult/elderly RSV infection model in 3-week, 8-week and 30-week-old cotton rats and infected them with equal dose of RSV. This model exhibited airway neutrophils infiltration. In the 3-week-old group, higher viral load was observed in the lungs and noses, may due to low IFN-α/Mx2 levels. In contrast, the 8-week-old group had adequate IFN-α/Mx2 but exhibited the most obvious pulmonary inflammation and peribronchiolitis. Interestingly, the most severe pathology and delayed viral clearance in the lungs were observed in the 30-week-old group, may related to the increase of mucus induced by TNF-α and the lower antiviral effect of IFN-α. These results clearly revealed that an age-dependent severity of RSV disease and antiviral defense in the cotton rats, which may provide an effective model for personalized vaccine research and specific treatment strategies for different RSV age groups.
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14
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Xie J, Long X, Gao L, Chen S, Zhao K, Li W, Zhou N, Zang N, Deng Y, Ren L, Wang L, Luo Z, Tu W, Zhao X, Fu Z, Xie X, Liu E. Respiratory Syncytial Virus Nonstructural Protein 1 Blocks Glucocorticoid Receptor Nuclear Translocation by Targeting IPO13 and May Account for Glucocorticoid Insensitivity. J Infect Dis 2019; 217:35-46. [PMID: 28968829 DOI: 10.1093/infdis/jix445] [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: 05/25/2017] [Accepted: 08/31/2017] [Indexed: 01/01/2023] Open
Abstract
Despite their powerful antiinflammatory effect, glucocorticoids have shown no significant clinical benefit in respiratory syncytial virus (RSV)-induced bronchiolitis, the reason for which remains unclear. Upon glucocorticoid binding, the cytoplasmic glucocorticoid receptor (GR) translocates to the nucleus with the help of importin 13 (IPO13). Here, we report that RSV infection reduced GR nuclear translocation in nasopharyngeal aspirates from RSV-infected infants, lungs of infected mice, and A549 cells, which coincided with decreased IPO13 expression. This led to repression of GR-induced antiinflammatory genes, such that dexamethasone failed to suppress airway inflammation and airway hyperresponsiveness in the infected mice. The anti-GR effect of RSV was mediated by viral nonstructural protein 1 , which likely functioned by competing with IPO13 for GR binding. Our findings provide a mechanism for the ineffectiveness of glucocorticoids in RSV-related disease and highlight the potential to target the IPO13-GR axis as a treatment for multiple glucocorticoid-related diseases.
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Affiliation(s)
- Jun Xie
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Xiaoru Long
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Leiqiong Gao
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Sisi Chen
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Keting Zhao
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Wei Li
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Na Zhou
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Na Zang
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Yu Deng
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders.,Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing
| | - Luo Ren
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Lijia Wang
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Zhengxiu Luo
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders.,Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing
| | - Wenwei Tu
- Department of Pediatrics and Adolescent Medicine, LKS Faculty of Medicine, University of Hong Kong, China
| | - Xiaodong Zhao
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders
| | - Zhou Fu
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders.,Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing
| | - Xiaohong Xie
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders.,Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing
| | - Enmei Liu
- Ministry of Education Key Laboratory of Child Development and Disorders.,Key Laboratory of Pediatrics in Chongqing.,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders.,Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing
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15
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Chen S, Yu G, Xie J, Tang W, Gao L, Long X, Ren L, Xie X, Deng Y, Fu Z, Liu E. High-mobility group box-1 protein from CC10 + club cells promotes type 2 response in the later stage of respiratory syncytial virus infection. Am J Physiol Lung Cell Mol Physiol 2018; 316:L280-L290. [PMID: 30407867 DOI: 10.1152/ajplung.00552.2017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The type 2 immune response, induced by infection of respiratory syncytial virus (RSV), has been linked to asthma development, but it remains unclear how the response is initiated. Here, we reported that the high-mobility group box-1 (HMGB1) protein promotes the type 2 response in the later stage of RSV infection. In mice, we found that type 2 cytokines were elevated in the later stages, which were strongly diminished after administration of anti-HMGB1 antibodies. Further investigation revealed that HMGB1 expression was localized to CC10+ club cells in the lung. In the clinic, levels of HMGB1 in nasopharyngeal aspirates in hospitalized infants with RSV bronchiolitis [median (interquartile range) 161.20 ng/ml (68.06-221.30)] were significantly higher than those without lower respiratory tract infections [21.94 ng/ml (12.12-59.82); P < 0.001]. Moreover, higher levels of HMGB1 correlated with clinical severity. These results reveal a link between viral infection and the asthma-like type 2 responses that are associated with long-term consequences.
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Affiliation(s)
- Sisi Chen
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Guangyuan Yu
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Jun Xie
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Wei Tang
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Leiqiong Gao
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Xiaoru Long
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Luo Ren
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Xiaohong Xie
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Yu Deng
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Zhou Fu
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University , Chongqing , China
| | - Enmei Liu
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University , Chongqing , China
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16
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Xi X, Liu JM, Guo JY. Correlation of PD-1/PD-L1 Signaling Pathway with Treg/Th17 Imbalance from Asthmatic Children. Int Arch Allergy Immunol 2018; 176:255-267. [PMID: 29874664 DOI: 10.1159/000489338] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 04/17/2018] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The balance between T helper 17 (Th17) and regulatory T cells (Treg) is a new paradigm in asthma pathogenesis, but no therapeutic targets could modulate the Th17/Treg balance specifically for asthma. Since previous studies have shown the programmed cell death-1(PD-1)/PD-ligand 1 (PD-L1) pathway is critical to immune homeostasis in this disease, we hypothesized that the PD-1/PD-L1 pathway might be involved in the regulation of Treg/Th17 imbalance in asthmatic children. METHODS The percentage of Treg and Th17 cells and the expression of PD-1 and PD-L1 were detected by flow cytometry in children with asthma and healthy controls. CD4+ T cells were stimulated with Th17 and Treg differentiating factors, and treated with anti-PD-1. Then cells were harvested and measured for Th17 and Treg percentages and Foxp3 and RORγt levels using RT-PCR. RESULTS We observed an inverse correlation between the percentages of Treg and Th17 cells, and the expression of PD-1 and PD-L1 in the two subsets also changed in the mild persistent and moderate to severe persistent groups compared with healthy controls. In vitro, administration of anti-PD-1 could decrease Th17 percentages and RORγt mRNA, and increase Treg percentages and Foxp3 mRNA in CD4+ T cells of children with asthma in the mild persistent and moderate to persistent groups. Additionally, the role played by anti-PD-1 in regulating Treg/Th17 balance was further confirmed in an asthmatic mouse model. CONCLUSION Alteration of the PD-1/PD-L1 pathway can modulate Treg/Th17 balance in asthmatic children. Treatment with anti-PD-1 posed protective effects on asthma models, providing a novel theoretical target for asthma.
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Affiliation(s)
- Xia Xi
- Department of Paediatrics, Dongying People's Hospital, Dongying, China
| | - Jing-Mei Liu
- Department of Clinical Laboratory, Dongying People's Hospital, Dongying, China
| | - Jun-Ying Guo
- Department of Paediatrics, Dongying People's Hospital, Dongying, China
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17
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Li S, Miao Z, Tian Y, Wang H, Wang S, He T, Yang Y, Wang P, Ma M, Yang T, Chen T, Liu Z, Gao J, Chen C, Qian A. Limethason reduces airway inflammation in a murine model of ovalbumin-induced chronic asthma without causing side effects. Exp Ther Med 2018; 15:2269-2276. [PMID: 29456634 PMCID: PMC5795477 DOI: 10.3892/etm.2018.5691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 10/05/2017] [Indexed: 01/26/2023] Open
Abstract
Airway inflammation is the major pathological feature of asthma. Thus, the current therapeutic strategy for asthma is to control inflammation. Limethason, an anti-inflammation drug, is widely used in rheumatoid arthritis treatment. The aim of the present study was to detect the anti-inflammatory effect and side effects of limethason on airways that were sensitized with ovalbumin in a murine model of chronic asthma. In the present study, BALB/c mice were sensitized with ovalbumin. Airway hyperresponsiveness was estimated, and hematoxylin and eosin staining, Periodic acid-Schiff staining and bronchoalveolar lavage were used to detect the effect on chronic asthma. Limethason effectively reduced airway hyperresponsiveness, and inhibited inflammatory cell infiltration and mucus secretion. Bronchoalveolar lavage fluid analysis revealed that limethason suppressed levels of airway eosinophils. In the period of treatment, limethason exhibited no influence on morphology of the femoral head, bone mineral content or bone mineral density, which were detected by histological studies and dual-energy X-ray absorptiometry. The index of liver, spleen, kidney, gastrocnemius and brown adipose tissue also demonstrated that limethason had no adverse effects on organs and tissues. The present study revealed that limethason could effectively reduce inflammation in an asthma mouse model without side effects. Therefore, limethason may have therapeutic potential for treating chronic asthma clinically.
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Affiliation(s)
- Siyu Li
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Zhiping Miao
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Ye Tian
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Haoyu Wang
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Shuai Wang
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Tianyuan He
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Yue Yang
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Peng Wang
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Mengyao Ma
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
| | - Tuanmin Yang
- Clinical Laboratory of Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710054, P.R. China
| | - Tao Chen
- Xi'an Libang Pharmaceutical Co., Ltd., Xi'an, Shaanxi 710075, P.R. China
| | - Zhiyong Liu
- CNGC Institute of Industrial Health, Xi'an, Shaanxi 710065, P.R. China
| | - Junhong Gao
- CNGC Institute of Industrial Health, Xi'an, Shaanxi 710065, P.R. China
| | - Chu Chen
- Clinical Laboratory of Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710054, P.R. China
| | - Airong Qian
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P.R. China
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18
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Ke LQ, Wang FM, Luo YC. [Effects of vasoactive intestinal peptide on airway inflammation and Th17/Treg balance in asthmatic mice]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2017; 19:699-704. [PMID: 28606240 PMCID: PMC7390301 DOI: 10.7499/j.issn.1008-8830.2017.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 04/06/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the effects of vasoactive intestinal peptide (VIP) on the airway inflammation and its regulatory effect on Th17/Treg imbalance in asthmatic mice. METHODS A total of 30 BALB/c mice were equally and randomly divided into three groups: control, asthma, and VIP. An acute asthmatic mouse model was established by sensitization and challenge with ovalbumin (OVA). The control group received normal saline instead of OVA. Before the challenge with OVA, the VIP group was administered VIP (20 μg/mL) by aerosol inhalation for 30 minutes. The bronchoalveolar lavage fluid (BALF) and the lung tissue were collected from mice. The pathological changes in the lung tissue were observed by hematoxylin and eosin staining. The levels of Th17/Treg-related cytokines in BALF were measured by enzyme-linked immunosorbent assay. The expression of retinoid-related orphan receptor gamma t (RORγt) and forkhead box P3 (Foxp3) were measured by real-time fluorescence quantitative PCR and immunohistochemistry. RESULTS The histopathological results showed that the VIP group had milder symptoms of airway inflammation than the asthma group. The level of IL-17 in BALF in the asthma group was significantly higher than that in the control group and the VIP group (P<0.01), but the level of IL-17 in the control group was significantly lower than that in the VIP group (P<0.01). The level of IL-10 in BALF in the asthma group was significantly lower than that in the control group and the VIP group (P<0.01, but the level of IL-10 in the VIP group was significantly higher than that in the control group (P<0.01). The asthma group showed significantly higher expression levels of RORγt mRNA and protein in the lung tissue and significantly lower expression levels of Foxp3 mRNA and protein than the control group (P<0.01). The VIP group had significantly lower expression levels of RORγt mRNA and protein in the lung tissue and significantly higher expression levels of Foxp3 mRNA and protein than the asthma group (P<0.05). CONCLUSIONS The Th17/Treg imbalance may be closely related to the airway inflammation in asthmatic mice. VIP can improve airway inflammation by regulating the Th17/Treg imbalance in asthmatic mice.
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Affiliation(s)
- Li-Qin Ke
- Department of Pulmonology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
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19
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Wei Y, Liu J, Zhang H, Du X, Luo Q, Sun J, Liu F, Li M, Xu F, Wei K, Dong J. Ligustrazine attenuates inflammation and the associated chemokines and receptors in ovalbumine-induced mouse asthma model. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 46:55-61. [PMID: 27438894 DOI: 10.1016/j.etap.2016.07.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 07/11/2016] [Indexed: 06/06/2023]
Abstract
Ligustrazine which is isolated from Chinese herb ligusticum chuanxiong hort, has been widely used in traditional Chinese medicine (TCM) for asthma treatment. In this study, we aim to observe the effect of ligustrazine on inflammation and the associated chemokines and receptors in ovalbumin (OVA)-induced mouse asthma model. Our data demonstrates that ligustrazine suppresses airway hyperresponsiveness to methacholine and lung inflammation in OVA-induced mouse asthma model. Ligustrazine also induces inhibition of inflammatory cells including neutrophils, lymphocytes and eosinophils. In addition, ligustrazine significantly reduces IL-4, IL-5, IL-17A, CCL3, CCL19 and CCL21 level in BALF of asthma mice. Furthermore, ligustrazine induces down-regulation of CCL19 receptor CCR7, STAT3 and p38 MAPK protein expression. Collectively, these results suggest that ligustrazine is effective in attenuation of allergic airway inflammatory changes and related chemokines and receptors in OVA-induced asthma model, and this action might be associated with inhibition of STAT3 and p38 MAPK pathway, which indicates that ligustrazine may be used as a potential therapeutic method to treat asthma.
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Affiliation(s)
- Ying Wei
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Jiaqi Liu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Hongying Zhang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Xin Du
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Qingli Luo
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Jing Sun
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Feng Liu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Mihui Li
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Fei Xu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Kai Wei
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, China; The Academy of Integrative Medicine, Fudan University, China.
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Long X, Xie J, Zhao K, Li W, Tang W, Chen S, Zang N, Ren L, Deng Y, Xie X, Wang L, Fu Z, Liu E. NK cells contribute to persistent airway inflammation and AHR during the later stage of RSV infection in mice. Med Microbiol Immunol 2016; 205:459-70. [PMID: 27329138 DOI: 10.1007/s00430-016-0459-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 05/24/2016] [Indexed: 01/18/2023]
Abstract
RSV can lead to persistent airway inflammation and AHR and is intimately associated with childhood recurrent wheezing and asthma, but the underlying mechanisms remain unclear. There are high numbers of NK cells in the lung, which not only play important roles in the acute stage of RSV infection, but also are pivotal in regulating the pathogenesis of asthma. Therefore, in this study, we assumed that NK cells might contribute to persistent airway disease during the later stage of RSV infection. Mice were killed at serial time points after RSV infection to collect samples. Leukocytes in bronchoalveolar lavage fluid (BALF) were counted, lung histopathology was examined, and airway hyperresponsiveness (AHR) was measured by whole-body plethysmography. Cytokines were detected by ELISA, and NK cells were determined by flow cytometry. Rabbit anti-mouse asialo-GM-1 antibodies and resveratrol were used to deplete or suppress NK cells. Inflammatory cells in BALF, lung tissue damage and AHR were persistent for 60 days post-RSV infection. Type 2 cytokines and NK cells were significantly increased during the later stage of infection. When NK cells were decreased by the antibodies or resveratrol, type 2 cytokines, the persistent airway inflammation and AHR were all markedly reduced. NK cells can contribute to the RSV-associated persistent airway inflammation and AHR at least partially by promoting type 2 cytokines. Therefore, therapeutic targeting of NK cells may provide a novel approach to alleviating the recurrent wheezing subsequent to RSV infection.
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Affiliation(s)
- Xiaoru Long
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No. 136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Jun Xie
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No. 136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Keting Zhao
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital, Chongqing Medical University, Chongqing, 400014, People's Republic of China
| | - Wei Li
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital, Chongqing Medical University, Chongqing, 400014, People's Republic of China
| | - Wei Tang
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital, Chongqing Medical University, Chongqing, 400014, People's Republic of China
| | - Sisi Chen
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital, Chongqing Medical University, Chongqing, 400014, People's Republic of China
| | - Na Zang
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No. 136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Luo Ren
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital, Chongqing Medical University, Chongqing, 400014, People's Republic of China
| | - Yu Deng
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No. 136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Xiaohong Xie
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No. 136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Lijia Wang
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No. 136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Zhou Fu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No. 136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Enmei Liu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No. 136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, People's Republic of China.
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Yang B, Liu R, Yang T, Jiang X, Zhang L, Wang L, Wang Q, Luo Z, Liu E, Fu Z. Neonatal Streptococcus pneumoniae infection may aggravate adulthood allergic airways disease in association with IL-17A. PLoS One 2015; 10:e0123010. [PMID: 25816135 PMCID: PMC4376740 DOI: 10.1371/journal.pone.0123010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 02/26/2015] [Indexed: 11/18/2022] Open
Abstract
Epidemiologic studies have demonstrated that some bacteria colonization or infections in early-life increased the risk for subsequent asthma development. However, little is known about the mechanisms by which early-life bacterial infection increases this risk. The aim of this study was to investigate the effect of neonatal Streptococcus pneumoniae infection on the development of adulthood asthma, and to explore the possible mechanism. A non-lethal S. pneumoniae lung infection was established by intranasal inoculation of neonatal (1-week-old) female mice with D39. Mice were sensitized and challenged with ovalbumin in adulthood to induce allergic airways disease (AAD). Twenty-four hours later, the lungs and bronchoalveolar lavage fluid (BALF) were collected to assess AAD. Neonatal S. pneumoniae infection exacerbated adulthood hallmark features of AAD, with enhanced airway hyperresponsiveness and increased neutrophil recruitment into the airways, increased Th17 cells and interleukin (IL)-17A productions. Depletion of IL-17A by i.p. injection of a neutralizing monoclonal antibody reduced neutrophil recruitment into the airways, alleviated airway inflammation and decreased airway hyperresponsiveness. Furthermore, IL-17A depletion partially restored levels of inteferon-γ, but had no effect on the release of IL-5 or IL-13. Our data suggest that neonatal S. pneumoniae infection may promote the development of adulthood asthma in association with increased IL-17A production.
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Affiliation(s)
- Baohui Yang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Ru Liu
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Ting Yang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing, China
| | - Xiaoli Jiang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Liqun Zhang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Lijia Wang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Qinghong Wang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
- The Central Laboratory of Children's Hospital, Chongqing Medical University, Chongqing, China
| | - Zhengxiu Luo
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing, China
- * E-mail:
| | - Enmei Liu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing, China
| | - Zhou Fu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing, China
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Long X, Li S, Xie J, Li W, Zang N, Ren L, Deng Y, Xie X, Wang L, Fu Z, Liu E. MMP-12-mediated by SARM-TRIF signaling pathway contributes to IFN-γ-independent airway inflammation and AHR post RSV infection in nude mice. Respir Res 2015; 16:11. [PMID: 25652021 PMCID: PMC4332892 DOI: 10.1186/s12931-015-0176-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 01/19/2015] [Indexed: 11/18/2022] Open
Abstract
Background Respiratory syncytial virus (RSV) is one of the most frequently observed pathogens during infancy and childhood. However, the corresponding pathogenesis has not been determined to date. We previously demonstrated that IFN-γ plays an important role in RSV pathogenesis, and SARM-TRIF-signaling pathway could regulate the production of IFN-γ. This study is to investigate whether T cells or innate immune cells are the predominant producers of IFN-γ, and further to explore other culprits in addition to IFN-γ in the condition of RSV infection. Methods Normal BALB/c mice and nude mice deficient in T cells were infected intranasally with RSV. Leukocytes in bronchoalveolar lavage fluid were counted, lung histopathology was examined, and airway hyperresponsiveness (AHR) was measured by whole-body plethysmography. IFN-γ and MMP-12 were detected by ELISA. MMP408, a selective MMP-12 inhibitor, was given intragastrically. Resveratrol, IFN-γ neutralizing antibody and recombinant murine IFN-γ were administered intraperitoneally. SARM and TRIF protein were semi-quantified by Western blot. siRNA was used to knock-down SARM expression. Results RSV induced significant airway inflammation and AHR in both mice; IFN-γ was significantly increased in BALB/c mice but not in nude mice. MMP-12 was dramatically increased in both mice but earlier in nude mice. When MMP-12 was inhibited by MMP408, RSV-induced respiratory symptoms were alleviated. SARM was significantly suppressed while TRIF was significantly enhanced in both mice strains. Following resveratrol administration in nude mice, 1) SARM inhibition was prevented, 2) TRIF and MMP-12 were correspondingly down-regulated and 3) airway disorders were subsequently alleviated. Moreover, when SARM was efficiently knocked down using siRNA, TRIF and MMP-12 were markedly enhanced, and the anti-RSV effects of resveratrol were remarkably abrogated. MMP-12 was significantly increased in the IFN-γ neutralizing antibody-treated BALB/c mice but reduced in the recombinant murine IFN-γ-treated nude mice. Conclusions MMP-12 can result in at least part of the airway inflammation and AHR independent of IFN-γ. And SARM-TRIF- signaling pathway is involved in regulating the overproduction of MMP-12. To the best of our knowledge, this study is the first that has examined the effects of SARM on MMP-12 and further highlights the potential to target SARM-TRIF-MMP-12 cascades to treat RSV infection. Electronic supplementary material The online version of this article (doi:10.1186/s12931-015-0176-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaoru Long
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, 400014, P.R. China.
| | - Simin Li
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, 400014, P.R. China.
| | - Jun Xie
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, 400014, P.R. China.
| | - Wei Li
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, 400014, P.R. China.
| | - Na Zang
- Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, 400014, P.R. China.
| | - Luo Ren
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No.136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, P.R. China.
| | - Yu Deng
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No.136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, P.R. China.
| | - Xiaohong Xie
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No.136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, P.R. China.
| | - Lijia Wang
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No.136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, P.R. China.
| | - Zhou Fu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No.136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, P.R. China.
| | - Enmei Liu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, No.136, Zhongshan 2nd Road, Yuzhong District, Chongqing, 400014, P.R. China.
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Chen ZH, Wang PL, Shen HH. Asthma research in China: a five-year review. Respirology 2014; 18 Suppl 3:10-9. [PMID: 24188199 DOI: 10.1111/resp.12196] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/25/2013] [Accepted: 09/07/2013] [Indexed: 12/30/2022]
Abstract
Asthma is one of the most common chronic diseases worldwide with increasing morbidity. China has the largest asthmatic population and is one of the countries with the highest asthma mortality. Fortunately, asthma research in China, both clinical and scientific, has developed markedly over the past few years. This has resulted in significant increases in our understanding of Chinese asthma prevalence, risk factors, control status, pathogenesis, and new prevention or treatment strategies. In this review, the major achievements of asthma research in China from 2008 to 2012 are summarized.
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Affiliation(s)
- Zhi-Hua Chen
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
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24
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Deng Y, Li W, Luo Y, Wang LJ, Xie XH, Luo J, Luo ZX, Zhao XD, Fu Z, Liu EM. Inhibition of IFN-γ promotes anti-asthma effect of Mycobacterium bovis Bacillus Calmette-Guerin neonatal vaccination: a murine asthma model. Vaccine 2014; 32:2070-8. [PMID: 24560675 DOI: 10.1016/j.vaccine.2014.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 02/01/2014] [Accepted: 02/06/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The Mycobacterium bovis Bacillus Calmette-Guerin (BCG) neonatal vaccination inhibits allergy-induced pathologic changes. However, the mechanisms underlying this process are unclear. This study aimed to investigate the role of interferon (IFN)-γ and interleukin (IL)-17 in the protective effects of the BCG neonatal vaccination on allergic pulmonary inflammation and airway hyperresponsiveness (AHR). METHODS Wild type (WT)-neonate and IL-17 knock out (KO) neonate mice were vaccinated with BCG. A murine asthma model was developed by sensitization and then challenging with ovalbumin (OVA). Recombinant IL-17 or recombinant IFN-γ was delivered to the airway to overexpress IL-17 or IFN-γ. An anti-IFN-γ neutralizing antibody was used to block the effects of IFN-γ. RESULTS We found exogenous IL-17 delivered to the airway reversed the anti-asthma effects of the neonatal BCG vaccination. BCG neonatal vaccination further reduced OVA-induced inflammation and AHR in IL-17 KO mice. Inhibition of IFN-γ in BCG neonatal vaccinated OVA-induced asthma model mice led to a further reduction in airway inflammation and AHR. In addition, airway inflammation and AHR were robust following treatment with exogenous IFN-γ. Neutralizing IL-17 was not sufficient to block OVA-induced airway inflammation and AHR. In IL-17 KO mice, airway inflammation and AHR did not occur following treatment with an anti-IFN-γ neutralizing antibody. CONCLUSIONS In an OVA-induced murine asthma model, inhibition of IFN-γ enhanced the anti-asthma effects of BCG neonatal vaccination.
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Affiliation(s)
- Yu Deng
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - Wei Li
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - Yan Luo
- Department of Neonatology, The Affiliated Hospital of Zunyi Medical College, Zunyi 563003, PR China
| | - Li J Wang
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Medical University, Chongqing 400014, PR China
| | - Xiao H Xie
- Key Laboratory of Pediatrics in Chongqing, Chongqing Medical University, Chongqing 400014, PR China
| | - Jian Luo
- Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing Medical University, Chongqing 400014, PR China
| | - Zheng X Luo
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - Xiao D Zhao
- Department of Nephrology and Immunology Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - Zhou Fu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - En M Liu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China.
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Zhang L, Gao H, Yang T, Yang B, Jiang X, Wang L, Wang Q, Luo Z, Liu E, Fu Z. Infant 7-valent pneumococcal conjugate vaccine immunization alters young adulthood CD4(+)T cell subsets in allergic airway disease mouse model. Vaccine 2014; 32:2079-85. [PMID: 24560673 DOI: 10.1016/j.vaccine.2014.02.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 12/28/2013] [Accepted: 02/06/2014] [Indexed: 10/25/2022]
Abstract
7-Valent pneumococcal conjugate vaccine (PCV7) immunization in adulthood can inhibit allergic asthma in mouse model. The aim of this study is to investigate the effects of infant PCV7 immunization on young adulthood CD4(+)T cell subsets in a murine allergic airway disease (AAD) model. Our study indicated that infant PCV7 immunization can inhibit young adulthood airway inflammation and airway hyperresponsiveness (AHR) by inducing the production of Foxp3(+)Treg, Th1 cells and their cytokines IL-10 and IFN-γ, inhibiting the production of Th2, Th17 cells and their cytokines IL-13 and IL-17A in BALB/c mice model. These results suggested that infant PCV7 immunization may serve as an effective measure to prevent young adulthood mice AAD.
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Affiliation(s)
- Liqun Zhang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Hui Gao
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China; Ultrasound division, Children's Hospital, Chongqing Medical University, Chongqing, China
| | - Ting Yang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Baohui Yang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Xiaoli Jiang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Lijia Wang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Qinghong Wang
- Ministry of Education, Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China; The Central Laboratory of Children's Hospital, Chongqing Medical University, Chongqing, China
| | - Zhengxiu Luo
- Department of Respiratory, Children's Hospital, Chongqing Medical University, Chongqing, China.
| | - Enmei Liu
- Department of Respiratory, Children's Hospital, Chongqing Medical University, Chongqing, China
| | - Zhou Fu
- Department of Respiratory, Children's Hospital, Chongqing Medical University, Chongqing, China
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Gouveia ACC, Brugiolo ASS, Alves CCS, Silva FMC, Mesquita FP, Gameiro J, Ferreira AP. Th2 responses in OVA-sensitized BALB/c mice are down-modulated by Mycobacterium bovis BCG treatment. J Clin Immunol 2012; 33:235-45. [PMID: 22864629 PMCID: PMC7086714 DOI: 10.1007/s10875-012-9746-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 07/16/2012] [Indexed: 12/03/2022]
Abstract
Objective This study aimed to determine whether Mycobacterium bovis Bacillus Calmette-Guérin (BCG) treatment can reverse an established allergic airway inflammation in a BALB/c mouse model of ovalbumin (OVA)-induced airway inflammation. Methods OVA sensitized BALB/c mice were challenged with aerosolized OVA on days 28 to 30, 34, 41 and 63. Mice were intranasal treated with BCG on days 35 and 42. Twenty-four hours after the last challenge, blood samples were collected to detect anti-OVA immunoglobulin isotypes, and bronchoalveolar lavage (BAL) was harvested for cell count. Additionally, lungs were collected for histological analysis, detection of the eosinophil peroxidase (EPO) activity and measurement of cytokines and CCL11. The expression of CTLA-4, Foxp3 and IL-10 was also determined in lung tissue by flow cytometry. Results BCG treatment was able to inhibit an established allergic Th2-response, by decreasing the allergen-induced eosinophilic inflammation, EPO activity, levels of CCL11 and IL-4, serum levels of IgE and IgG1. Mycobacteria treatment increased lung levels of IFN-γ, IL-10 and TGF-β, and expressions of Foxp3 and CTLA-4 in CD4+T cells. Additionally, an increased production of IL-10 by CD8+ T cells was observed, even though no detectable changes in CD4+IL-10+ was noticed. Conclusion BCG treatment inhibits features of allergic airway inflammation and the results suggest that the mechanism underlying the down-regulatory effects of BCG on OVA-induced airway inflammation appear to be associated with the induction of both Th1 and T regulatory immune responses.
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Affiliation(s)
- Ana Cláudia Carvalho Gouveia
- Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
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Hamzaoui A, Maalmi H, Berraïes A, Abid H, Ammar J, Hamzaoui K. Transcriptional characteristics of CD4 T cells in young asthmatic children: RORC and FOXP3 axis. J Inflamm Res 2011; 4:139-46. [PMID: 22259252 PMCID: PMC3259694 DOI: 10.2147/jir.s25314] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background Asthma is a chronic inflammatory disorder, hypothetically caused by autoreactive Th2 cells, whereas Th1 and regulatory T cells may confer protection. The development of Th subpopulations is dependent on the expression of lineage-specific transcription factors. Purpose This study aimed to assess the balance of CD4+ T cell populations in asthmatic children. Methods Peripheral blood mononuclear cells (PBMC) mRNA expression was assessed in 30 asthmatic children (18 patients with mild asthma and 12 with moderate asthma). Real-time polymerase chain reaction (RT-PCR) quantified TBX21, GATA-3, RORC, FOXP3, and EBI3 mRNA expression. Intracellular cytokine expression of IL-2, IL-4, IL-10, and IFN-γ in CD4+ T cells in asthmatic children was measured by flow cytometry. IL-6 and IL-17 cytokines were assessed in serum by enzyme-linked immunosorbent assay (ELISA). Results A significant increase was found in the percentage of CD4+ and CD8+ T cell-producing IL-4, IL-6, and IL-17. A decreased percentage of CD4+ producing IFN-γ in asthmatic children was found. Expression of GATA-3 (Th2), retinoid-related orphan receptor C (RORC) (Th17), and EBI3 were increased in asthmatic patients compared to healthy controls. Expression of FOXP3 (Treg) and TBX21 (Th1) were decreased (P < 0.0001 and P < 0.0001) in asthmatic children. Analysis of transcription factor ratios revealed an increase in the RORC/FOXP3 (P = 0.0001), and a significant decrease of TBX21/GATA-3 (P = 0.0001) ratios in patients with asthma. Conclusion Young asthmatics were characterized by increased IL-4 production and low IFN-γ synthesis. The increased serum IL-17 and IL-6 levels sustained an inflammatory environment in young asthmatics. The results indicate that FOXP3 and RORC mRNA expression could be associated with the sustained inflammatory process, transduced by low immune tolerance by Treg cells. The TBX21/GATA-3 and RORC/FOXP3 ratios dysregulation in asthmatics is consistent with the plasticity existing between Th1, Th17, and Treg cells during inflammation.
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Affiliation(s)
- Agnes Hamzaoui
- Department of Pediatrics and Respiratory Disease, Homeostasis and Cell Dysfunction Unit Research, Abderrahman Mami Hospital, Ariana, Tunisia
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