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Agac A, Kolbe SM, Ludlow M, Osterhaus ADME, Meineke R, Rimmelzwaan GF. Host Responses to Respiratory Syncytial Virus Infection. Viruses 2023; 15:1999. [PMID: 37896776 PMCID: PMC10611157 DOI: 10.3390/v15101999] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/22/2023] [Accepted: 09/23/2023] [Indexed: 10/29/2023] Open
Abstract
Respiratory syncytial virus (RSV) infections are a constant public health problem, especially in infants and older adults. Virtually all children will have been infected with RSV by the age of two, and reinfections are common throughout life. Since antigenic variation, which is frequently observed among other respiratory viruses such as SARS-CoV-2 or influenza viruses, can only be observed for RSV to a limited extent, reinfections may result from short-term or incomplete immunity. After decades of research, two RSV vaccines were approved to prevent lower respiratory tract infections in older adults. Recently, the FDA approved a vaccine for active vaccination of pregnant women to prevent severe RSV disease in infants during their first RSV season. This review focuses on the host response to RSV infections mediated by epithelial cells as the first physical barrier, followed by responses of the innate and adaptive immune systems. We address possible RSV-mediated immunomodulatory and pathogenic mechanisms during infections and discuss the current vaccine candidates and alternative treatment options.
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Affiliation(s)
| | | | | | | | | | - Guus F. Rimmelzwaan
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (A.A.); (S.M.K.); (M.L.); (A.D.M.E.O.); (R.M.)
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2
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Lee SH, Chu KB, Kim MJ, Quan FS. Virus-Like Particles Assembled Using Respiratory Syncytial Virus Matrix Protein Elicit Protective Immunity in Mice. Infect Drug Resist 2023; 16:6099-6110. [PMID: 37719656 PMCID: PMC10503551 DOI: 10.2147/idr.s426039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 09/01/2023] [Indexed: 09/19/2023] Open
Abstract
Purpose Heterologous virus-like particle (VLP) assembly involving influenza or the Newcastle disease virus matrix protein (M) has been extensively used to explore the efficacies of VLP vaccines against the respiratory syncytial virus (RSV). Here, we attempted to generate homologous RSV VLPs by expressing the pre-fusion (pre-F) or the glycoprotein (G) on the RSV M protein and evaluated their protective efficacy in mice. Methods We generated VLPs using the baculovirus expression system in Spodoptera frugiperda (Sf9) insect cells. Recombinant baculoviruses expressing the RSV pre-F, G, and M antigens were inoculated into Sf9 cells, and particles were self-assembled. Mice were immunized with either pre-F or G-expressing VLPs, and immune parameters were assessed to determine protection. Results Our findings show that successful VLP assembly can be achieved by utilizing recombinant baculoviruses expressing the RSV pre-F or G proteins with the native matrix protein. Mice immunized with either pre-F or the G antigen-expressing VLPs elicited robust serum-mediated virus neutralization. VLP immunization evoked Th1-biased RSV-specific antibody responses in the sera of mice. Following challenge infection with the RSV A2 strain, immunized mice experienced lesser eosinophil and IL-4 accumulation in the lungs, though a substantial increase in TNF-α secretion was observed from CD4+ T cells. Interestingly, splenic antibody-secreting cell responses were substantially enhanced against RSV F antigen, but not against the RSV G antigen following immunization and challenge infection. Immunizing mice with the VLPs significantly inhibited pulmonary histopathology development, as indicated by the diminished inflammatory immune cell influx and mucin secretion. Conclusion Combined, these vaccine-induced immune responses contributed to successfully inhibiting the RSV replication in the lungs of mice and demonstrated that RSV VLP assembly using insect cell-derived homologous RSV matrix protein is a feasible approach.
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Affiliation(s)
- Su-Hwa Lee
- Department of Medical Zoology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Ki-Back Chu
- Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Core Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Min-Ju Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Fu-Shi Quan
- Department of Medical Zoology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
- Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Core Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
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3
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Patel AG, Moxham S, Bamezai AK. Ly-6A-Induced Growth Inhibition and Cell Death in a Transformed CD4 + T Cell Line: Role of Tumor Necrosis Factor-α. Arch Immunol Ther Exp (Warsz) 2023; 71:4. [PMID: 36725744 DOI: 10.1007/s00005-023-00670-3] [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: 05/20/2022] [Accepted: 10/21/2022] [Indexed: 02/03/2023]
Abstract
Ly-6A, a member of the Ly-6/uPAR supergene family of proteins, is a cell adhesion and cell signaling protein. Signaling through Ly-6A activates the cell-intrinsic apoptotic cell death pathway in CD4+ T cell lines, as indicated by the release of cytochrome C, and activation of caspases 9 and 3. In addition, Ly-6A induces cytokine production and growth inhibition. The mechanism underlying the distinct cellular responses that are triggered by engaging Ly-6A protein has remained unknown. To examine the relatedness of these distinct responses, we have quantified the production of pro-apoptotic, growth inhibitory and tumor suppressive cytokines, such as TNF-α, TGF-β and a related protein GDF-10, in response to Ly-6A signaling. Anti-Ly-6A monoclonal antibody-induced activation of YH16.33 CD4+ T cell line generated low levels of TGF-β and GDF-10 but elevated levels of TNF-α. Blocking the biological activity of TNF-α resulted in reduced Ly-6A-induced apoptosis in T cells. The Ly-6A-induced response in the T cell line was distinct, as signaling through the antigen receptor complex did not cause growth inhibition and apoptosis despite high levels of TGF-β and GDF-10 that were detected in these cultures. Additionally, in response to antigen receptor complex signaling, lower amount of TNF-α was detected. These results indicate the contribution of TNF-α in the observed Ly-6A-induced growth inhibition and apoptosis and provide a mechanistic explanation for the biologically distinct responses observed in CD4+ T cells after engaging Ly-6A protein. Additionally, the findings reported here will aid in the understanding of inhibitory signaling initiated by Ly-6A protein, especially in the context of its potential immune checkpoint inhibitory role in T cells.
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Affiliation(s)
- Akshay G Patel
- Department of Biology, Villanova University, Villanova, PA, 19085, USA
| | - Sarah Moxham
- Department of Biology, Villanova University, Villanova, PA, 19085, USA
| | - Anil K Bamezai
- Department of Biology, Villanova University, Villanova, PA, 19085, USA.
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Hurme P, Komulainen M, Tulkki M, Leino A, Rückert B, Turunen R, Vuorinen T, Akdis M, Akdis CA, Jartti T. Cytokine expression in rhinovirus- vs. respiratory syncytial virus-induced first wheezing episode and its relation to clinical course. Front Immunol 2022; 13:1044621. [PMID: 36451824 PMCID: PMC9702984 DOI: 10.3389/fimmu.2022.1044621] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/14/2022] [Indexed: 09/26/2023] Open
Abstract
Rhinovirus (RV) and respiratory syncytial virus (RSV) are common causes of bronchiolitis. Unlike an RSV etiology, an RV etiology is associated with a markedly increased risk of asthma. We investigated the cytokine profiles of RV- and RSV-induced first wheezing episode and their correlation with prognosis. We recruited 52 sole RV- and 11 sole RSV-affected children with a severe first wheezing episode. Peripheral blood mononuclear cells (PBMCs) were isolated during acute illness and 2 weeks later and stimulated in vitro with anti-CD3/anti-CD28. Culture medium samples were analyzed for 56 different cytokines by multiplex ELISA. Recurrences were prospectively followed for 4 years. In adjusted analyses, the cytokine response from PBMCs in the RV group was characterized by decreased expression of interleukin 1 receptor antagonist (IL-1RA), interleukin 1 beta (IL-1β), and monocyte chemoattractant protein-1 (MCP-1) and increased expression of eosinophil chemotactic protein 2 (eotaxin-2), thymus- and activation-regulated chemokine (TARC), and epithelial-derived neutrophil-activating peptide 78 (ENA-78) in the acute phase and increased expression of fractalkine in the convalescent phase compared to those in the RSV group. An analysis of the change in cytokine expression between study points revealed an increased expression of fractalkine and IL-1β and decreased expression of I-309 (CCL1) and TARC in the RV group compared to those in the RSV group.. Considering hospitalization time, a significant non-adjusted group × cytokine interaction was observed in the levels of interferon gamma (IFN-γ), macrophage-derived chemokine (MDC), IL-1RA, and vascular endothelial growth factor (VEGF), indicating that a higher expression of cytokine was associated with shorter hospitalization time in the RSV group but not in the RV group. A significant interaction was also found in interleukin 6 (IL-6), but the cytokine response was not associated with hospitalization time in the RSV or RV group. In the RV group, increased expression of I-309 (CCL1) and TARC was associated with fewer relapses within 2 months, and decreased expression of interleukin 13 (IL-13) and increased expression of I-309 (CCL1) were associated with less relapses within 12 months. Differences in cytokine response from PBMCs were observed between RV- and RSV-induced first severe wheezing episode. Our findings also reveal new biomarkers for short- and medium-term prognosis in first-time wheezing children infected with RV or RSV.
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Affiliation(s)
- Pekka Hurme
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, Turku, Finland
| | - Miisa Komulainen
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, Turku, Finland
| | - Marleena Tulkki
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, Turku, Finland
| | - Annamari Leino
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, Turku, Finland
| | - Beate Rückert
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Riitta Turunen
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, Turku, Finland
- New Children’s Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Tytti Vuorinen
- Institute of Biomedicine, University of Turku, Turku, Finland
- Department of Clinical Microbiology, Turku University Hospital, Turku, Finland
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Cezmi A. Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Tuomas Jartti
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, Turku, Finland
- PEDEGO Research Unit, Medical Research Center, University of Oulu, Oulu, Finland
- Department of Pediatrics and Adolescent Medicine, Oulu University Hospital, Oulu, Finland
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Binns E, Tuckerman J, Licciardi PV, Wurzel D. Respiratory syncytial virus, recurrent wheeze and asthma: A narrative review of pathophysiology, prevention and future directions. J Paediatr Child Health 2022; 58:1741-1746. [PMID: 36073299 PMCID: PMC9826513 DOI: 10.1111/jpc.16197] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 08/19/2022] [Accepted: 08/21/2022] [Indexed: 01/11/2023]
Abstract
Globally, respiratory syncytial virus (RSV) is the leading cause of bronchiolitis and pneumonia in young children, and the association between severe RSV disease and later recurrent wheeze and asthma is well established. Whilst a causal link between RSV and wheeze/asthma is not yet proven, immunological evidence suggests skewing towards a Th2-type response, and dampening of IFN-γ antiviral immunity during RSV infection underpins airway hyper-reactivity in a subset of susceptible children after RSV infection. Age at primary RSV infection, viral co-infection and genetic influences may act as effect-modifiers. Despite the significant morbidity and mortality burden of RSV disease in children, there is currently no licensed vaccine. Recent advancements in RSV preventatives, including long-acting monoclonal antibodies and maternal vaccinations, show significant promise and we are on the cusp of a new era in RSV prevention. However, the potential impact of RSV preventatives on subsequent wheeze and asthma remains unclear. The ongoing COVID-19 pandemic and associated public health measures have disrupted the usual seasonality of RSV. Whilst this has posed challenges for health-care services it has also enhanced our understanding of RSV transmission. The near absence of RSV cases during the first year of the pandemic in the context of strict public health measures has provided a rare opportunity to study the impact of delayed age of primary RSV infection on asthma prevalence. In this review, we summarise current understanding of the association between RSV, recurrent wheeze and asthma with a focus on pathophysiology, preventative strategies and future research priorities.
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Affiliation(s)
- Elly Binns
- Department of PaediatricsUniversity of MelbourneMelbourneVictoriaAustralia,The Royal Melbourne HospitalMelbourneVictoriaAustralia
| | - Jane Tuckerman
- Department of PaediatricsUniversity of MelbourneMelbourneVictoriaAustralia,Infection and ImmunityMurdoch Children's Research InstituteMelbourneVictoriaAustralia
| | - Paul V Licciardi
- Department of PaediatricsUniversity of MelbourneMelbourneVictoriaAustralia,Infection and ImmunityMurdoch Children's Research InstituteMelbourneVictoriaAustralia
| | - Danielle Wurzel
- Infection and ImmunityMurdoch Children's Research InstituteMelbourneVictoriaAustralia,School of Population and Global HealthUniversity of MelbourneMelbourneVictoriaAustralia,Department of Respiratory MedicineRoyal Children's HospitalMelbourneVictoriaAustralia
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Chirkova T, Rosas-Salazar C, Gebretsadik T, Jadhao SJ, Chappell JD, Peebles RS, Dupont WD, Newcomb DC, Berdnikovs S, Gergen PJ, Hartert TV, Anderson LJ. Effect of Infant RSV Infection on Memory T Cell Responses at Age 2-3 Years. Front Immunol 2022; 13:826666. [PMID: 35371035 PMCID: PMC8967987 DOI: 10.3389/fimmu.2022.826666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/23/2022] [Indexed: 11/13/2022] Open
Abstract
Background It is unknown whether RSV infection in infancy alters subsequent RSV immune responses. Methods In a nested cohort of healthy, term children, peripheral blood mononuclear cells (PBMCs) were collected at ages 2-3 years to examine RSV memory T cell responses among children previously RSV infected during infancy (first year of life) compared to those RSV-uninfected during infancy. The presence vs. absence of infant RSV infection was determined through a combination of RSV molecular and serologic testing. Memory responses were measured in RSV stimulated PBMCs. Results Compared to children not infected with RSV during the first year of life, children infected with RSV during infancy had lower memory T cell responses at ages 2-3 years to in vitro stimulation with RSV for most tested type-1 and type-17 markers for a number of memory T cell subsets. Conclusions RSV infection in infancy has long-term effects on memory T cell responses. This is the first study to show the potential for RSV infection in infancy to have long-term effects on the immune memory irrespective of the severity of the infection. Our results suggest a possible mechanism through which infant RSV infection may result in greater risk of subsequent childhood respiratory viral morbidity, findings also relevant to vaccine development.
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Affiliation(s)
- Tatiana Chirkova
- Department of Pediatrics, Emory University School of Medicine and Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - Christian Rosas-Salazar
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Tebeb Gebretsadik
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Samadhan J. Jadhao
- Department of Pediatrics, Emory University School of Medicine and Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - James D. Chappell
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - R. Stokes Peebles
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - William D. Dupont
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Dawn C. Newcomb
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Sergejs Berdnikovs
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Peter J. Gergen
- Division of Allergy, Immunology and Transplantation, National Institute of Allergy and Infectious Diseases, Rockville, MD, United States
| | - Tina V. Hartert
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Larry J. Anderson
- Department of Pediatrics, Emory University School of Medicine and Children’s Healthcare of Atlanta, Atlanta, GA, United States
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Buonsenso D, Gennaro LD, Rose CD, Morello R, D'Ilario F, Zampino G, Piazza M, Boner AL, Iraci C, O'Connell S, Cohen VB, Esposito S, Munblit D, Reena J, Sigfrid L, Valentini P. Long-term outcomes of pediatric infections: from traditional infectious diseases to long covid. Future Microbiol 2022; 17:551-571. [PMID: 35264003 PMCID: PMC8910780 DOI: 10.2217/fmb-2022-0031] [Citation(s) in RCA: 54] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
There is limited evidence available on the long-term impact of SARS-CoV-2 infection in children. In this article, the authors analyze the recent evidence on pediatric long covid and lessons learnt from a pediatric post-covid unit in Rome, Italy. To gain a better understanding of the concerns raised by parents and physicians in relation to the potential long-term consequences of this novel infection, it is important to recognize that long-term effect of a post-infectious disease is not a new phenomenon. The authors analyze the recent evidence on pediatric long covid and lessons learnt from a pediatric post-covid unit in Rome, Italy. Also, we analyze the long-term effects of other infectious diseases. An analysis of the recent evidence on pediatric long covid and lessons learnt from a pediatric post-covid unit in Rome, Italy.
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Affiliation(s)
- Danilo Buonsenso
- Department of Woman & Child Health & Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy.,Center for Global Health Research & Studies, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Leonardo Di Gennaro
- Department of Diagnostic Imaging, Hemorrhagic & Thrombotic Diseases Center, Oncological Radiotherapy, & Hematology, Foundation 'A Gemelli' IRCCS University Hospital, Rome, Italy
| | - Cristina De Rose
- Department of Woman & Child Health & Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Rosa Morello
- Department of Woman & Child Health & Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Federico D'Ilario
- Department of Woman & Child Health & Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Giuseppe Zampino
- Department of Woman & Child Health & Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Michele Piazza
- Pediatric Section, Department of Surgery, Dentistry, pediatrics, & Gynaecology, University of Verona, Verona, Italy
| | - Attilio L Boner
- Pediatric Section, Department of Surgery, Dentistry, pediatrics, & Gynaecology, University of Verona, Verona, Italy
| | | | | | - Valentina B Cohen
- Patient author, member of the CAC Community Advisory Council of Solve ME/CFS Initiative, Pietro Barilla Children's Hospital, Department of Medicine & Surgery, University of Parma, Via Gramsci 14, Parma, 43126, Italy
| | - Susanna Esposito
- Pietro Barilla Children's Hospital, Department of Medicine & Surgery, University of Parma, Via Gramsci 14, Parma, 43126, Italy
| | - Daniel Munblit
- Department of pediatrics & pediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation
| | - Joseph Reena
- MSc Immunology, Imperial College London, London, UK
| | - Louise Sigfrid
- ISARIC Global Support Centre, Centre for Tropical Medicine & Global Health, University of Oxford, Oxford, UK
| | - Piero Valentini
- Department of Woman & Child Health & Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
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Selective Blockade of TNFR1 Improves Clinical Disease and Bronchoconstriction in Experimental RSV Infection. Viruses 2020; 12:v12101176. [PMID: 33080861 PMCID: PMC7588931 DOI: 10.3390/v12101176] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 02/07/2023] Open
Abstract
Respiratory syncytial virus (RSV) is the leading cause of bronchiolitis in infants and young children. Although some clinical studies have speculated that tumor necrosis factor (TNF)-α is a major contributor of RSV-mediated airway disease, experimental evidence remains unclear or conflicting. TNF-α initiates inflammation and cell death through two distinct receptors: TNF-receptor (TNFR)1 and TNFR2. Here we delineate the function of TNF-α by short-lasting blockade of either receptor in an experimental BALB/c mouse model of RSV infection. We demonstrate that antibody-mediated blockade of TNFR1, but not TNFR2, results in significantly improved clinical disease and bronchoconstriction as well as significant reductions of several inflammatory cytokines and chemokines, including IL-1α, IL-1β, IL-6, Ccl3, Ccl4, and Ccl5. Additionally, TNFR1 blockade was found to significantly reduce neutrophil number and activation status, consistent with the concomitant reduction of pro-neutrophilic chemokines Cxcl1 and Cxcl2. Similar protective activity was also observed when a single-dose of TNFR1 blockade was administered to mice following RSV inoculation, although this treatment resulted in improved alveolar macrophage survival rather than reduced neutrophil activation. Importantly, short-lasting blockade of TNFR1 did not affect RSV peak replication in the lung. This study suggests a potential therapeutic approach for RSV bronchiolitis based on selective blockade of TNFR1.
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Kitcharoensakkul M, Bacharier LB, Yin-Declue H, Boomer JS, Sajol G, Leung MK, Wilson B, Schechtman KB, Atkinson JP, Green JM, Castro M. Impaired tumor necrosis factor-α secretion by CD4 T cells during respiratory syncytial virus bronchiolitis associated with recurrent wheeze. IMMUNITY INFLAMMATION AND DISEASE 2020; 8:30-39. [PMID: 31901157 PMCID: PMC7016853 DOI: 10.1002/iid3.281] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 11/06/2019] [Accepted: 12/07/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND Infants with severe respiratory syncytial virus (RSV) bronchiolitis have an increased risk of recurrent wheezing and asthma. We aimed to evaluate the relationships between regulatory T cell (Treg) percentage and cytokine production of in vitro-stimulated CD4+ T cells during acute bronchiolitis and the development of recurrent wheezing in the first 3 years of life. METHODS We obtained peripheral blood from 166 infants hospitalized with their first episode of RSV-confirmed bronchiolitis. Granzyme B (GZB) expression, and interleukin-10, interferon-γ, tumor necrosis factor-α (TNF-α), IL-4, and IL-5 production by in vitro anti-CD3/CD28- and anti-CD3/CD46-activated CD4+ T cells, and percentage of peripheral Treg (CD4+CD25hi Foxp3hi ) cells were measured by flow cytometry. Wheezing was assessed every 6 months. Recurrent wheezing was defined as three or more episodes following the initial RSV bronchiolitis. RESULTS Sixty-seven percent (n = 111) of children had wheezing after their initial RSV infection, with 30% having recurrent wheezing. The percentage of peripheral Treg (CD4+CD25hi Foxp3hi ) cells was not significantly different between the wheezing groups. Decreased TNF-α production from anti-CD3/CD28- and anti-CD3/CD46- activated CD4+ T cells was observed in the recurrent wheezers, compared with nonwheezers (p = .048 and .03, respectively). There were no significant differences in the GZB+ CD4+ T cells and production of other inflammatory cytokines between these groups. CONCLUSIONS We demonstrated lower TNF-α production by in vitro stimulated CD4+ T cells during severe RSV bronchiolitis in children that subsequently developed recurrent wheezing, compared with children with no subsequent wheeze. These findings support the role of CD4+ T cell immunity in the development of subsequent wheezing in these children.
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Affiliation(s)
- Maleewan Kitcharoensakkul
- The Division of Allergy, Immunology and Pulmonary Medicine, Department of Pediatrics, St. Louis Children's Hospital, Washington University School of Medicine, St. Louis, Missouri
| | - Leonard B Bacharier
- The Division of Allergy, Immunology and Pulmonary Medicine, Department of Pediatrics, St. Louis Children's Hospital, Washington University School of Medicine, St. Louis, Missouri
| | - Huiqing Yin-Declue
- The Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Jonathan S Boomer
- The Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Geneline Sajol
- The Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Marilyn K Leung
- The Division of Rheumatology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Brad Wilson
- The Division of Biostatistics, Washington University School of Medicine, St. Louis, Missouri
| | - Kenneth B Schechtman
- The Division of Biostatistics, Washington University School of Medicine, St. Louis, Missouri
| | - John P Atkinson
- The Division of Rheumatology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | | | - Mario Castro
- The Division of Pulmonary, Critical Care and Sleep Medicine, University of Kansas School of Medicine, Kansas City, Kansas
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