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Theodorou J, Nowak E, Böck A, Salvermoser M, Beerweiler C, Zeber K, Kulig P, Tsang MS, Wong CK, Wong GWK, Roponen M, Kumbrink J, Alhamdan F, Michel F, Garn H, Tosevski V, Schaub B. Mitogen-activated protein kinase signaling in childhood asthma development and environment-mediated protection. Pediatr Allergy Immunol 2022; 33:e13657. [PMID: 34455626 DOI: 10.1111/pai.13657] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/14/2021] [Accepted: 08/19/2021] [Indexed: 01/06/2023]
Abstract
BACKGROUND While childhood asthma prevalence is rising in Westernized countries, farm children are protected. The mitogen-activated protein kinase (MAPK) pathway with its negative regulator dual-specificity phosphatase-1 (DUSP1) is presumably associated with asthma development. OBJECTIVES We aimed to investigate the role of MAPK signaling in childhood asthma and its environment-mediated protection, including a representative selection of 232 out of 1062 children from two cross-sectional cohorts and one birth cohort study. METHODS Peripheral blood mononuclear cells (PBMC) from asthmatic and healthy children were cultured upon stimulation with farm-dust extracts or lipopolysaccharide. In subgroups, gene expression was analyzed by qPCR (PBMCs, cord blood) and NanoString technology (dendritic cells). Protein expression of phosphorylated MAPKs was measured by mass cytometry. Histone acetylation was investigated by chromatin immunoprecipitation. RESULTS Asthmatic children expressed significantly less DUSP1 (p = .006) with reduced acetylation at histone H4 (p = .012) compared with healthy controls. Farm-dust stimulation upregulated DUSP1 expression reaching healthy levels and downregulated inflammatory MAPKs on gene and protein levels (PBMCs; p ≤ .01). Single-cell protein analysis revealed downregulated pMAPKs upon farm-dust stimulation in B cells, NK cells, monocytes, and T-cell subpopulations. CONCLUSION Lower DUSP1 baseline levels in asthmatic children and anti-inflammatory regulation of MAPK in several immune cell types by farm-dust stimulation indicate a regulatory function for DUSP1 for future therapy contributing to anti-inflammatory characteristics of farming environments.
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Affiliation(s)
- Johanna Theodorou
- Pediatric Allergology, Department of Pediatrics, Dr. von Hauner Children´s Hospital, University Hospital, LMU Munich, Munich, Germany.,Member of German Center for Lung Research - DZL, LMU Munich, Munich, Germany
| | - Elisabeth Nowak
- Pediatric Allergology, Department of Pediatrics, Dr. von Hauner Children´s Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Andreas Böck
- Pediatric Allergology, Department of Pediatrics, Dr. von Hauner Children´s Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Michael Salvermoser
- Pediatric Allergology, Department of Pediatrics, Dr. von Hauner Children´s Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Claudia Beerweiler
- Pediatric Allergology, Department of Pediatrics, Dr. von Hauner Children´s Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Kathrin Zeber
- Pediatric Allergology, Department of Pediatrics, Dr. von Hauner Children´s Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Paulina Kulig
- Mass Cytometry Facility, University of Zurich, Zurich, Switzerland
| | - Miranda S Tsang
- Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Chun-Kwok Wong
- Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Gary W K Wong
- Department of Pediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Marjut Roponen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Jörg Kumbrink
- Institute of Pathology, Medical Faculty, LMU Munich, Munich, Germany.,German Cancer Consortium (DKTK), Partner site Munich, Munich, Germany
| | - Fahd Alhamdan
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Marburg, Germany
| | - Florian Michel
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Marburg, Germany
| | - Holger Garn
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Marburg, Germany
| | - Vinko Tosevski
- Mass Cytometry Facility, University of Zurich, Zurich, Switzerland
| | - Bianca Schaub
- Pediatric Allergology, Department of Pediatrics, Dr. von Hauner Children´s Hospital, University Hospital, LMU Munich, Munich, Germany.,Member of German Center for Lung Research - DZL, LMU Munich, Munich, Germany
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