Cited by 88Asthma and respiratory diseasesImmunotherapy and Immune ResponsesAllergic Rhinitis and Sensitization

Airway Epithelial Cells Regulate the Functional Phenotype of Locally Differentiating Dendritic Cells: Implications for the Pathogenesis of Infectious and Allergic Airway Disease

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Rate, Angela, Upham, John W, Bosco, Anthony, McKenna, Kathy L, Holt, Patrick G·2009·The Journal of Immunology

Abstract

Atopic asthma pathogenesis is driven by the combined effects of airway inflammation generated during responses to viral infections and aeroallergens, and both these pathways are regulated by dendritic cells (DC) that differentiate locally from monocytic precursors. These DCs normally exhibit a sentinel phenotype characterized by active Ag sampling but attenuated presentation capability, which limits the intensity of local expression of adaptive immunity. How this tight control of airway DC functions is normally maintained, and why it breaks down in some atopics leading to immunopathological changes in airway tissues, is unknown. We postulated that signals from adjacent airway epithelial cells (AEC) contribute to regulation of local differentiation of DC. We tested this in a coculture model containing both cell types in a GM-CSF-IL-4-enriched cytokine milieu characteristic of the atopic asthmatic airway mucosa. We demonstrate that contact with AEC during DC differentiation up-regulates expression of the function-associated markers MHC class II, CD40, CD80, TLR3, and TLR4 on DCs with concomitant up-regulation of Ag uptake/processing. Moreover, the AEC-conditioned DCs displayed increased LPS responsiveness evidenced by higher production of IL-12, IL-6, IL-10, and TNF-α. The Th2 memory-activating properties of AEC-conditioned DCs were also selectively attenuated. Data from microarray and blocking experiments implicate AEC-derived type 1 IFNs and IL-6 in modulation of DC differentiation. Collectively, these findings suggest that resting AECs modulate local DC differentiation to optimize antimicrobial defenses in the airways and in the process down-modulate capacity for expression of potentially damaging Th2 immunity.

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Crossref · 10.4049/jimmunol.182.1.72

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  • Airway epithelial cells are increasingly recognized as important players in processes driving local cDC differentiation and maturation via production of various cytokines, including IL-15, TSLP, and type I IFNs.

    “Airway epithelial cells are increasingly recognized as important players in the processes driving local cDC differentiation and maturation via production of various cytokines, including IL-15, thymic stromal lymphopoietin (TSLP), and type I IFNs (227, 230, 272, 289).”

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Authors
Rate, A., Upham, J. W., Bosco, A., McKenna, K. L., & Holt, P. G.
Affiliations
  • The Kids Research Institute Australia (AU)
  • The University of Queensland (AU)
Corresponding author
  • Rate, Angela
  • Bosco, Anthony
Venue
The Journal of Immunology
Published
2009-01-01
Volume
182
Issue
1
Pages
72-83
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1495158135
Cited by
88
References
96
Citations by year
2024: 2 · 2023: 1 · 2022: 3 · 2021: 2 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 4 · 2016: 4 · 2015: 11 · 2014: 6 · 2013: 4 · 2012: 11
FWCI
9.72
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
Funders
  • Medical Research Council
  • National Health and Medical Research Council
Topics
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Health Sciences › Medicine › Immunology and Allergy › Allergic Rhinitis and Sensitization
Keywords
airway epithelial cells, dendritic cell differentiation, allergic asthma, airway inflammation, MHC class II, TLR3, TLR4, CD40, CD80, LPS responsiveness, Th2 immune response, type I interferon, interleukin-6, GM-CSF, IL-4, allergic airway disease, viral infection
MeSH terms
Adult, Aged, Bronchi, Cell Differentiation, Cell Line, Transformed, Cells, Cultured, Dendritic Cells, Humans, Hypersensitivity, Immunologic Memory, Lung, Lymphocyte Activation, Middle Aged, Monocytes, Virus Diseases, Immunophenotyping, T-Lymphocyte Subsets, Cytokines, Coculture Techniques, Lipopolysaccharide Receptors, Respiratory Mucosa, Gene Expression Profiling

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