Journal article
Bidirectional interactions between antigen-bearing respiratory tract dendritic cells (DCs) and T cells precede the late phase reaction in experimental asthma: DC activation occurs in the airway mucosa but not in the lung parenchyma
Journal of Experimental Medicine, Vol.198(1), pp.19-30
2003
Abstract
The airway mucosal response to allergen in asthma involves influx of activated T helper type 2 cells and eosinophils, transient airflow obstruction, and airways hyperresponsiveness (AHR). The mechanism(s) underlying transient T cell activation during this inflammatory response is unclear. We present evidence that this response is regulated via bidirectional interactions between airway mucosal dendritic cells (AMDC) and T memory cells. After aerosol challenge, resident AMDC acquire antigen and rapidly mature into potent antigen-presenting cells (APCs) after cognate interactions with T memory cells. This process is restricted to dendritic cells (DCs) in the mucosae of the conducting airways, and is not seen in peripheral lung. Within 24 h, antigen-bearing mature DCs disappear from the airway wall, leaving in their wake activated interleukin 2R+ T cells and AHR. Antigen-bearing activated DCs appear in regional lymph nodes at 24 h, suggesting onward migration from the airway. Transient up-regulation of CD86 on AMDC accompanies this process, which can be reproduced by coculture of resting AMDC with T memory cells plus antigen. The APC activity of AMDC can be partially inhibited by anti-CD86, suggesting that CD86 may play an active role in this process and/or is a surrogate for other relevant costimulators. These findings provide a plausible model for local T cell activation at the lesional site in asthma, and for the transient nature of this inflammatory response.
Details
- Title
- Bidirectional interactions between antigen-bearing respiratory tract dendritic cells (DCs) and T cells precede the late phase reaction in experimental asthma: DC activation occurs in the airway mucosa but not in the lung parenchyma
- Authors/Creators
- J.C. Huh (Author/Creator) - The Kids Research Institute AustraliaD.H. Strickland (Author/Creator) - The Kids Research Institute AustraliaF.L. Jahnsen (Author/Creator) - The Kids Research Institute AustraliaD.J. Turner (Author/Creator) - The Kids Research Institute AustraliaJ.A. Thomas (Author/Creator) - The Kids Research Institute AustraliaS. Napoli (Author/Creator) - The Kids Research Institute AustraliaI. Tobagus (Author/Creator) - The Kids Research Institute AustraliaP.A. Stumbles (Author/Creator) - The Kids Research Institute AustraliaP.D. Sly (Author/Creator) - The Kids Research Institute AustraliaP.G. Holt (Author/Creator) - The Kids Research Institute Australia
- Publication Details
- Journal of Experimental Medicine, Vol.198(1), pp.19-30
- Publisher
- The Rockefeller University Press
- Identifiers
- 991005542868507891
- Copyright
- 2003 Rockefeller University Press
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 1 Clinical & Life Sciences
- 1.6 Immunology
- 1.6.358 Dendritic Cell Therapy
- Web Of Science research areas
- Immunology
- Medicine, Research & Experimental
- ESI research areas
- Immunology