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Sansone V, Angelillo S, Licata F, Miraglia del Giudice G, Di Giuseppe G. Respiratory Syncytial Vaccination: Parents' Willingness to Vaccinate Their Children. Vaccines (Basel) 2024; 12:418. [PMID: 38675800 PMCID: PMC11054569 DOI: 10.3390/vaccines12040418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/08/2024] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND This study was conducted to assess parents' willingness to vaccinate their children with the RSV vaccine and the key predictors of this intention among parents in Italy. METHODS Data were collected using an anonymous self-administered questionnaire from April to November 2023, targeting parents in public kindergartens and nursery schools in southern Italy. The survey assessed parents' socio-demographic characteristics, health-related details, their child's health status, attitudes toward RSV infection and its vaccine, and their source(s) of information. RESULTS A total of 404 parents agreed to participate in the study. Only 18.2% of participants were very concerned that their children could get infected by RSV, and this concern was more likely among parents whose child had been diagnosed with bronchiolitis, those who received information from HCWs, those who had heard of RSV, and those who needed additional information. Almost half (51.3%) were willing to vaccinate their child, and this inclination was more likely among fathers, employed parents, those with daughters, those who had heard of RSV, those who received information from HCWs, and those who needed additional information. CONCLUSIONS An educational campaign regarding a future RSV vaccine, especially about its safety and efficacy, is needed in order to improve parents' willingness.
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Affiliation(s)
- Vincenza Sansone
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (V.S.); (G.M.d.G.)
| | - Silvia Angelillo
- Department of Health Sciences, University of Catanzaro “Magna Græcia”, 88100 Catanzaro, Italy; (S.A.); (F.L.)
| | - Francesca Licata
- Department of Health Sciences, University of Catanzaro “Magna Græcia”, 88100 Catanzaro, Italy; (S.A.); (F.L.)
| | - Grazia Miraglia del Giudice
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (V.S.); (G.M.d.G.)
| | - Gabriella Di Giuseppe
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (V.S.); (G.M.d.G.)
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Li N, Shi T, Zhang M, He Y, Feng J, Mei Z, Su X, Jie Z. PLZF promotes the development of asthma tolerance via affecting memory phenotypes of immune cells. Int Immunopharmacol 2023; 114:109559. [PMID: 36525795 DOI: 10.1016/j.intimp.2022.109559] [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: 10/09/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 12/15/2022]
Abstract
Clarifying the pathogenesis of asthma and/or identifying the specific pathway underlying oral asthma tolerance (OT) would be of great significance. In our previous study, promyelocytic leukemia zinc finger (PLZF), which reportedly regulates memory phenotypes, was found to promote ovalbumin (OVA)-induced OT. Therefore, this study aimed to explore the regulatory effects of PLZF on memory phenotypes in asthma and OT mouse models. We found that Zbtb16 (encoding PLZF) and PLZF+ cells were highly increased in OT lungs compared with asthmatic lungs. PLZF was co-expressed with GATA3, and IL-4+PLZF+ cells were significantly lower in OT lungs than in asthmatic lungs. Notably, memory cells were decreased in OT mice, and these mice had PLZF+ cells that expressed lower levels of CD44 than those of asthmatic mice. When Zbtb16 was overexpressed in splenic lymphocytes, the number of CD44+ cells decreased. There were increased memory cells in splenic lymphocytes after treatment with the supernatant of OVA-treated airway epithelial cells; however, this was reversed by Zbtb16 overexpression. Early respiratory syncytial virus infection increased memory cells and reduced PLZF+ cells in the OT mice. Collectively, these results indicate that PLZF may reduce the proportion of memory cells, thereby, promoting the establishment of OT.
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Affiliation(s)
- Na Li
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China; Department of Medicine, Respiratory, Emergency and Intensive Care Medicine, The Affiliated Dushu Lake Hospital of Soochow University, Suzhou, China
| | - Tianyun Shi
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Meng Zhang
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Yanchao He
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Jingjing Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Zhoufang Mei
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Xiao Su
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China.
| | - Zhijun Jie
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.
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Li N, Chen J, Xie S, Zhang M, Shi T, He Y, Jie Z, Su X. Oral antibiotics relieve allergic asthma in post-weaning mice via reducing iNKT cells and function of ADRB2. Front Immunol 2022; 13:1024235. [PMID: 36389706 PMCID: PMC9640740 DOI: 10.3389/fimmu.2022.1024235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 10/03/2022] [Indexed: 12/02/2022] Open
Abstract
The role of normal gut microbiota in asthma or ovalbumin (OVA)-induced asthma tolerance (OT) remains unclear. Here, we established mouse models of asthma and OT followed by 2 weeks of antibiotic treatment, to clear the gut microbiota. Antibiotic treatment was found to alleviate allergic asthma accompanied with a reduction of invariant natural killer (iNKT) cells. By RNA-seq analysis, we found that β-adrenergic receptor (ADRB) genes, including Adrb1, Adrb2, and Adrb3, were downregulated in asthmatic lungs, but these changes were reversed in OT lungs. Moreover, Adrb2 and Adrb3 were significantly upregulated in asthmatic lungs after antibiotic treatment. Surprisingly, blocking ADRB with propranolol relieved allergic asthma while reducing T helper 2 (Th2) and Treg cell numbers. Further analyses using flow cytometry and immunofluorescence showed that the protein expression level of ADRB2 was higher in asthmatic lungs than that in the control and OT lungs. Notably, dendritic cells (DCs), especially the ADRB2+ DCs, were increased in asthmatic lungs compared to that in the control and OT lungs. In addition, ADRB2+ DCs were significantly reduced following the administration of the ADRB2-specific antagonist ICI118551. Our findings suggest that antibiotic treatment can alleviate OVA-induced allergic asthma via reducing the frequency of iNKT cells and function of ADRB2.
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Affiliation(s)
- Na Li
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People’s Hospital, Fudan University, Shanghai, China
- Department of Medicine, Respiratory, Emergency and Intensive Care Medicine, The Affiliated Dushu Lake Hospital of Soochow University, Suzhou, China
| | - Jie Chen
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Sitao Xie
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Meng Zhang
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People’s Hospital, Fudan University, Shanghai, China
| | - Tianyun Shi
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People’s Hospital, Fudan University, Shanghai, China
| | - Yanchao He
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People’s Hospital, Fudan University, Shanghai, China
| | - Zhijun Jie
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People’s Hospital, Fudan University, Shanghai, China
- *Correspondence: Xiao Su, ; Zhijun Jie,
| | - Xiao Su
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
- *Correspondence: Xiao Su, ; Zhijun Jie,
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Prashanth G, Vastrad B, Vastrad C, Kotrashetti S. Potential Molecular Mechanisms and Remdesivir Treatment for Acute Respiratory Syndrome Corona Virus 2 Infection/COVID 19 Through RNA Sequencing and Bioinformatics Analysis. Bioinform Biol Insights 2022; 15:11779322211067365. [PMID: 34992355 PMCID: PMC8725226 DOI: 10.1177/11779322211067365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/29/2021] [Indexed: 11/27/2022] Open
Abstract
Introduction: Severe acute respiratory syndrome corona virus 2 (SARS-CoV-2) infections
(COVID 19) is a progressive viral infection that has been investigated
extensively. However, genetic features and molecular pathogenesis underlying
remdesivir treatment for SARS-CoV-2 infection remain unclear. Here, we used
bioinformatics to investigate the candidate genes associated in the
molecular pathogenesis of remdesivir-treated SARS-CoV-2-infected
patients. Methods: Expression profiling by high-throughput sequencing dataset (GSE149273) was
downloaded from the Gene Expression Omnibus, and the differentially
expressed genes (DEGs) in remdesivir-treated SARS-CoV-2 infection samples
and nontreated SARS-CoV-2 infection samples with an adjusted
P value of <.05 and a |log fold change| > 1.3
were first identified by limma in R software package. Next, pathway and gene
ontology (GO) enrichment analysis of these DEGs was performed. Then, the hub
genes were identified by the NetworkAnalyzer plugin and the other
bioinformatics approaches including protein-protein interaction network
analysis, module analysis, target gene—miRNA regulatory network, and target
gene—TF regulatory network. Finally, a receiver-operating characteristic
analysis was performed for diagnostic values associated with hub genes. Results: A total of 909 DEGs were identified, including 453 upregulated genes and 457
downregulated genes. As for the pathway and GO enrichment analysis, the
upregulated genes were mainly linked with influenza A and defense response,
whereas downregulated genes were mainly linked with drug
metabolism—cytochrome P450 and reproductive process. In addition, 10 hub
genes (VCAM1, IKBKE, STAT1, IL7R, ISG15, E2F1, ZBTB16, TFAP4, ATP6V1B1, and
APBB1) were identified. Receiver-operating characteristic analysis showed
that hub genes (CIITA, HSPA6, MYD88, SOCS3, TNFRSF10A, ADH1A, CACNA2D2,
DUSP9, FMO5, and PDE1A) had good diagnostic values. Conclusion: This study provided insights into the molecular mechanism of
remdesivir-treated SARS-CoV-2 infection that might be useful in further
investigations.
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Affiliation(s)
- G Prashanth
- Department of General Medicine, Basaveshwara Medical College, Chitradurga, India
| | - Basavaraj Vastrad
- Department of Biochemistry, Basaveshwar College of Pharmacy, Gadag, India
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Sahu U, Biswas D, Prajapati VK, Singh AK, Samant M, Khare P. Interleukin-17-A multifaceted cytokine in viral infections. J Cell Physiol 2021; 236:8000-8019. [PMID: 34133758 PMCID: PMC8426678 DOI: 10.1002/jcp.30471] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 06/01/2021] [Accepted: 06/03/2021] [Indexed: 12/11/2022]
Abstract
Viral infections are a major threat to the human population due to the lack of selective therapeutic measures. The morbidity and mortality reported worldwide are very alarming against viral pathogens. The proinflammatory environment is required for viral inhibition by initiating the host immune response. The host immune response fights these pathogens by secreting different cytokines. Interleukin-17 (IL-17) a proinflammatory cytokine mainly produced by T helper type 17 cells, plays a vital role in the regulation of host immune response against various pathogens, including viruses. However, dysregulated production of IL-17 induces chronic inflammation, autoimmune disorders, and may lead to cancer. Recent studies suggest that IL-17 is not only involved in the antiviral immune response but also promotes virus-mediated illnesses. In this review, we discuss the protective and pathogenic role of IL-17 against various viral infections. A detailed understanding of IL-17 during viral infections could contribute to improve therapeutic measures and enable the development of an efficient and safe IL-17 based immunotherapy.
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Affiliation(s)
- Utkarsha Sahu
- Department of MicrobiologyAll India Institute of Medical SciencesBhopalMadhya PradeshIndia
| | - Debasis Biswas
- Department of MicrobiologyAll India Institute of Medical SciencesBhopalMadhya PradeshIndia
| | | | - Anirudh K. Singh
- Department of MicrobiologyAll India Institute of Medical SciencesBhopalMadhya PradeshIndia
| | - Mukesh Samant
- Cell and Molecular Biology Laboratory, Department of ZoologyKumaun UniversityAlmoraUttarakhandIndia
| | - Prashant Khare
- Department of MicrobiologyAll India Institute of Medical SciencesBhopalMadhya PradeshIndia
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Shi T, Li N, He Y, Feng J, Mei Z, Du Y, Jie Z. Th17/Treg cell imbalance plays an important role in respiratory syncytial virus infection compromising asthma tolerance in mice. Microb Pathog 2021; 156:104867. [PMID: 33957244 DOI: 10.1016/j.micpath.2021.104867] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 03/03/2021] [Accepted: 03/09/2021] [Indexed: 12/14/2022]
Abstract
Mucosal tolerance is induced early in life and is an important mechanism of protection from diseases, such as asthma. Respiratory syncytial virus (RSV) is a main cause of bronchiolitis and pneumonia in infants. Clinical studies have found that there is a strong association between RSV infection in infancy and later development of asthma, but the underlying mechanisms are unclear. A mouse model of immune tolerance induced by oral feeding of ovalbumin(OVA) was successfully established in our previous studies. We found that RSV infection could break the oral immune tolerance state.RSV infection increased the mRNA expression of IL-17A and IL-17A/Foxp3(the transcription factor forkhead box P3) in OT mice, but the mRNA expression of IL-4 and other T helper(Th)2 cytokines did not change significantly. As detected by flow cytometry analysis, RSV infection elevated Th17 cell levels and correspondingly decreased Regulatory T(Treg) cell levels in the hilar lymph nodes (HLNs) and mesenteric lymph nodes (MLNs), but there were no significant differences in the spleen or peripheral blood.We hypothesized that an imbalance in Th cells played an important role in RSV infection compromising asthma tolerance.RSV infection disrupted asthma tolerance by increasing the Th17/Treg ratio rather than the Th1/Th2 ratio'.Therefore, altering the Th17/Treg ratio has been identified as a potential therapeutic target in asthma caused by RSV or another virus.
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Affiliation(s)
- Tianyun Shi
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China; Center of Community-Based Health Research, Fudan University, China
| | - Na Li
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China; Center of Community-Based Health Research, Fudan University, China
| | - Yanchao He
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China; Center of Community-Based Health Research, Fudan University, China
| | - Jingjing Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China; Center of Community-Based Health Research, Fudan University, China
| | - Zhoufang Mei
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China; Center of Community-Based Health Research, Fudan University, China
| | - Yong Du
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China; Center of Community-Based Health Research, Fudan University, China
| | - Zhijun Jie
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China; Center of Community-Based Health Research, Fudan University, China.
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Feng X, Li L, Feng J, He W, Li N, Shi T, Jie Z, Su X. Vagal-α7nAChR signaling attenuates allergic asthma responses and facilitates asthma tolerance by regulating inflammatory group 2 innate lymphoid cells. Immunol Cell Biol 2020; 99:206-222. [PMID: 32893406 DOI: 10.1111/imcb.12400] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/12/2020] [Accepted: 09/04/2020] [Indexed: 12/20/2022]
Abstract
Disorders of immune tolerance may lead to allergic asthma. Group 2 innate lymphoid cells (ILC2s) and inflammatory ILC2s (iILC2s) are key players in asthma. The vagus nerve innervating the airways releases acetylcholine or neuropeptides (i.e. calcitonin gene-related peptide) via pulmonary C-fibers (PCFs), which could regulate ILC2 activity upon binding the α7 nicotinic acetylcholine receptor (α7nAChR, coded by Chrna7) or neuropeptide receptors. Whether and how α7nAChR and PCFs regulate asthma and the formation of asthma tolerance via ILC2s or iILC2s are poorly understood. We used vagotomized, PCF degeneration and Chrna7 knockout mice to investigate ovalbumin (OVA)-induced asthma and oral OVA feeding-induced asthma tolerance. Our results revealed that vagotomy could generally suppress lung ILC2s and iILC2s, which mitigated allergic asthma responses but disrupted asthmatic tolerance. Removal of neuropeptides by PCF degeneration also reduced lung ILC2s and iILC2s, attenuating asthma responses, but did not affect asthma tolerance. In comparison, deletion of Chrna7 increased resident ILC2s and trafficking iILC2s in the lung, worsened allergic inflammation and disrupted oral tolerance. Mechanistically, deletion of Chrna7 in asthma-tolerant conditions upregulated T helper 2 cytokine- (Il4, Il13 and Il25) and sphingosine-1-phosphate (S1P)-related genes (S1pr1 and Sphk1). Blockade of S1P reduced iILC2 recruitment into asthmatic lungs. Our work is the first to demonstrate that vagal-α7nAChR signaling engaging with iILC2s and S1P not only alleviates asthma but also facilitates asthma tolerance. These findings may provide a novel therapeutic target for attenuating asthma by enhancing asthmatic tolerance.
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Affiliation(s)
- Xintong Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Ling Li
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Jingjing Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Wei He
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Na Li
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Tianyun Shi
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Zhijun Jie
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Xiao Su
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
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Identification of potential mRNA panels for severe acute respiratory syndrome coronavirus 2 (COVID-19) diagnosis and treatment using microarray dataset and bioinformatics methods. 3 Biotech 2020; 10:422. [PMID: 33251083 PMCID: PMC7679428 DOI: 10.1007/s13205-020-02406-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 08/20/2020] [Indexed: 12/15/2022] Open
Abstract
The goal of the present investigation is to identify the differentially expressed genes (DEGs) between SARS-CoV-2 infected and normal control samples to investigate the molecular mechanisms of infection with SARS-CoV-2. The microarray data of the dataset E-MTAB-8871 were retrieved from the ArrayExpress database. Pathway and Gene Ontology (GO) enrichment study, protein–protein interaction (PPI) network, modules, target gene–miRNA regulatory network, and target gene–TF regulatory network have been performed. Subsequently, the key genes were validated using an analysis of the receiver operating characteristic (ROC) curve. In SARS-CoV-2 infection, a total of 324 DEGs (76 up- and 248 down-regulated genes) were identified and enriched in a number of associated SARS-CoV-2 infection pathways and GO terms. Hub and target genes such as TP53, HRAS, MAPK11, RELA, IKZF3, IFNAR2, SKI, TNFRSF13C, JAK1, TRAF6, KLRF2, CD1A were identified from PPI network, target gene–miRNA regulatory network, and target gene–TF regulatory network. Study of the ROC showed that ten genes (CCL5, IFNAR2, JAK2, MX1, STAT1, BID, CD55, CD80, HAL-B, and HLA-DMA) were substantially involved in SARS-CoV-2 patients. The present investigation identified key genes and pathways that deepen our understanding of the molecular mechanisms of SARS-CoV-2 infection, and could be used for SARS-CoV-2 infection as diagnostic and therapeutic biomarkers.
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Feng X, Zhao C, Li L, Feng J, He W, Shi T, Li N, Jie Z, Su X. iNKT cells with high PLZF expression are recruited into the lung via CCL21-CCR7 signaling to facilitate the development of asthma tolerance in mice. Eur J Immunol 2020; 51:414-432. [PMID: 32712954 DOI: 10.1002/eji.202048798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/29/2020] [Accepted: 07/23/2020] [Indexed: 01/10/2023]
Abstract
Establishment of immune tolerance is crucial to protect humans against asthma. Promyelocytic leukemia zinc finger (PLZF) is an emerging suppressor of inflammatory responses. CCL21-CCR7 signaling mediates tolerance development. However, whether PLZF and CCL21-CCR7 are required for the development of asthma tolerance is unknown. Here, we found that Zbtb16 (coding PLZF) and Ccl21 were upregulated in OVA-induced asthma tolerance (OT) lungs by RNA-seq. PLZF physically interacted with GATA3 and its expression was higher in GATA3+ Th2 cells and ILC2s in OT lungs. Zbtb16-knockdown in lymphocytes promoted the differentiation of CD3e+ CD4+ T cells, particularly those producing IL-4 and IL-5. Moreover, iNKT cells with high expression of PLZF were recruited into the lungs via draining lymph nodes during tolerance. Blockade of CCL21-CCR7 signaling in OT mice decreased the PLZF+ cell population, abolished CCR7-induced PLZF+ iNKT recruitment to the lungs, enhanced Th2responses and exacerbated lung pathology. In OT mice, respiratory syncytial virus (RSV) infection impeded PLZF+ cell and CCR7+ PLZF+ iNKT cellrecruitment to the lungs and increased airway resistance. Collectively, these results indicate that PLZF could interact with GATA3 and restrain differentiation of IL-4- and IL-5-producing T cells, iNKT cells with high PLZF expression are recruited to the lungs via CCL21-CCR7 signaling to facilitate the development of asthma tolerance.
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Affiliation(s)
- Xintong Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Caiqi Zhao
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Ling Li
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Jingjing Feng
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Wei He
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Tianyun Shi
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Na Li
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Zhijun Jie
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.,Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Xiao Su
- Unit of Respiratory Infection and Immunity, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
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Th17/IL-17 Axis Regulated by Airway Microbes Get Involved in the Development of Asthma. Curr Allergy Asthma Rep 2020; 20:11. [PMID: 32172346 DOI: 10.1007/s11882-020-00903-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW Bronchial asthma is a common respiratory disease induced by immune imbalance, characterized by chronic non-specific airway inflammation and airway hyperresponsiveness (AHR). Many factors induce asthma, among which respiratory infection is the important cause. In this review, we discuss how respiratory microbes participate in the occurrence and progression of asthma via Th17/IL-17 axis. RECENT FINDINGS Pathogenesis of asthma has been considered as closely related to the imbalance in number and function of Th1/Th2 in the CD4+ T lymphocyte subsets. Recent studies have shown that Th17 cell and its secretory IL-17 also play an important role in AHR. Respiratory virus, bacteria, fungi, and other respiratory microbial infections can directly or indirectly induce the differentiation of Th17 cell and the production of related cytokines to induce AHR. Respiratory microbial infection can affect the TH17/IL-17A axis through a variety of mechanisms, thereby promoting the occurrence and development of asthma, and these specific mechanisms may provide new effective therapeutic ideas for asthma.
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11
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TLR5 Activation Exacerbates Airway Inflammation in Asthma. Lung 2020; 198:289-298. [PMID: 32060608 DOI: 10.1007/s00408-020-00337-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 01/31/2020] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Innate immune activation through exposure to indoor and outdoor pollutants is emerging as an important determinant of asthma severity. For example, household levels of the bacterial product lipopolysaccharide (LPS) are associated with increased asthma severity. We hypothesized that activation of the innate immune receptor TLR5 by its bacterial ligand flagellin will exacerbate airway inflammation and asthma symptoms. METHODS We determined the effect of flagellin co-exposure with ovalbumin in a murine model of allergic asthma. We evaluated the presence of flagellin activity in house dust of asthma patients. Finally, we analyzed the association of a dominant-negative polymorphism in TLR5 (rs5744168) with asthma symptoms in patients with asthma. RESULTS We showed that bacterial flagellin can be found in the house dust of patients with asthma and that this bacterial product exacerbates allergic airway inflammation in an allergen-specific mouse model of asthma. Furthermore, a dominant-negative genetic polymorphism in TLR5, the receptor for flagellin, is associated with decreased symptoms in patients with asthma. CONCLUSION Together, our results reveal a novel genetic protective factor (TLR5 deficiency) and a novel environmental pollutant (microbial flagellin) that influence asthma severity. (Clinical trials NCT01688986 and NCT01087307).
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12
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Fear VS, Poh WP, Gorman S, Waithman JC, Fear MW. IFNβ inhibits the development of allergen tolerance and is conducive to the development of asthma on subsequent allergen exposure. Immunol Cell Biol 2018; 96:841-851. [PMID: 29611236 DOI: 10.1111/imcb.12050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 03/26/2018] [Accepted: 03/27/2018] [Indexed: 11/28/2022]
Abstract
Asthma is a chronic disease affecting up to 10% of the Australian population for which medical treatment is solely aimed at relief of symptoms rather than prevention of disease. Evidence from animal and human studies demonstrates a strong link between viral respiratory infections, atopy and the development of asthma. Type I IFNs include IFNα and IFNβ, with subtype expression tailored toward the specific viral infection. We hypothesized that exposure to type I IFNs and allergen may interfere with the healthy response to innocuous airway antigen exposure. In this study, we use an ovalbumin (OVA)-induced BALB/c model of experimental allergic airways disease, where pre-exposure of the airways to OVA is protective against allergen sensitization, leading to allergen tolerance. We investigated airways pre-exposure with OVA and type I IFNs on development of allergic airways disease. We demonstrate restoration of allergic airways disease on pre-exposure with allergen and IFNβ, and not IFNα. Dysfunction in tolerance led to changes in dendritic cell antigen capture/traffic, T-cell and B-cell responses. Furthermore, exposure to IFNβ with ongoing allergen exposure led to the development of hallmark asthma features, including OVA-specific IgE and airways eosinophilia. Data indicate a role for IFNβ in linking viral infection and allergy.
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Affiliation(s)
- Vanessa S Fear
- Tumour Immunology Group, School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia
| | - Wee Peng Poh
- Inflammation Group, Telethon Kids Institute, School of Paediatrics and Child Health Research, University of Western Australia, Perth, WA, Australia
| | - Shelley Gorman
- Inflammation Group, Telethon Kids Institute, School of Paediatrics and Child Health Research, University of Western Australia, Perth, WA, Australia
| | - Jason C Waithman
- Inflammation Group, Telethon Kids Institute, School of Paediatrics and Child Health Research, University of Western Australia, Perth, WA, Australia
| | - Mark W Fear
- Burn Injury Research Unit, School of Surgery, University of Western Australia, Perth, WA, Australia
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