Advanced search
1 file | 1.63 MB

Persistent activation of dendritic cells after resolution of allergic airway inflammation breaks tolerance to inhaled allergens in mice

Author
Organization
Abstract
Rationale: Polysensitization of patients who are allergic is a common feature. The underlying immunologic mechanism is not clear. The maturation status of dendritic cells (DCs) is considered to be important for priming naive T cells in the draining lymph nodes. We hypothesized that chronic airway inflammation can induce an enhanced maturation of airway DCs and facilitate subsequent priming to neoallergens. Objectives: To investigate whether chronic airway inflammation could induce an altered activation of airway DCs in mice and whether this influences the development of allergic sensitization. Methods: Balb/c mice were repeatedly challenged with DCs to induce a chronic airway inflammation. We evaluated (1) the induction of the main characteristic features of human asthma including persistent remodeling, (2) the maturation status of airway DCs 1 month after inflammation resolved, (3) whether this influences tolerance to inhaled neoallergen, and (4) what type of T helper response would be induced by DCs. Measurements and Main Results: Airway DCs displayed a mature phenotype after complete resolution of airway eosinophilia. Inhalation of a neoallergen without any adjuvant was able to induce airway inflammation in postinflammation lungs but not in control lungs. One month after inflammation, airway DCs were able to induce Th2 polarization in naive T cells consistent with the up-regulation of the Th2 skewing molecules Ym1/2 and OX-40L compared with DCs of control airways. Conclusions: This study provides evidence that sustained maturation of DCs after resolution of Th2-mediated inflammation can contribute to polysensitization.
Keywords
remodeling, murine asthma model, Th2, neosensitization, mucosal immunity, DE-NOVO SENSITIZATION, T-CELLS, MURINE MODEL, IN-VIVO, EXPERIMENTAL ASTHMA, RESPIRATORY-TRACT, MOUSE MODEL, ANTIGEN, DISEASE, EXPOSURE

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.63 MB

Citation

Please use this url to cite or link to this publication:

Chicago
van Rijt, Leonie, Nanda Vos, Monique Willart, Femke Muskens, Paul P Tak, Corine van der Horst, Henk C Hoogsteden, and Bart Lambrecht. 2011. “Persistent Activation of Dendritic Cells After Resolution of Allergic Airway Inflammation Breaks Tolerance to Inhaled Allergens in Mice.” American Journal of Respiratory and Critical Care Medicine 184 (3): 303–311.
APA
van Rijt, Leonie, Vos, N., Willart, M., Muskens, F., Tak, P. P., van der Horst, C., Hoogsteden, H. C., et al. (2011). Persistent activation of dendritic cells after resolution of allergic airway inflammation breaks tolerance to inhaled allergens in mice. AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE, 184(3), 303–311.
Vancouver
1.
van Rijt L, Vos N, Willart M, Muskens F, Tak PP, van der Horst C, et al. Persistent activation of dendritic cells after resolution of allergic airway inflammation breaks tolerance to inhaled allergens in mice. AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE. 2011;184(3):303–11.
MLA
van Rijt, Leonie, Nanda Vos, Monique Willart, et al. “Persistent Activation of Dendritic Cells After Resolution of Allergic Airway Inflammation Breaks Tolerance to Inhaled Allergens in Mice.” AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE 184.3 (2011): 303–311. Print.
@article{1234768,
  abstract     = {Rationale: Polysensitization of patients who are allergic is a common feature. The underlying immunologic mechanism is not clear. The maturation status of dendritic cells (DCs) is considered to be important for priming naive T cells in the draining lymph nodes. We hypothesized that chronic airway inflammation can induce an enhanced maturation of airway DCs and facilitate subsequent priming to neoallergens. 
Objectives: To investigate whether chronic airway inflammation could induce an altered activation of airway DCs in mice and whether this influences the development of allergic sensitization. 
Methods: Balb/c mice were repeatedly challenged with DCs to induce a chronic airway inflammation. We evaluated (1) the induction of the main characteristic features of human asthma including persistent remodeling, (2) the maturation status of airway DCs 1 month after inflammation resolved, (3) whether this influences tolerance to inhaled neoallergen, and (4) what type of T helper response would be induced by DCs. 
Measurements and Main Results: Airway DCs displayed a mature phenotype after complete resolution of airway eosinophilia. Inhalation of a neoallergen without any adjuvant was able to induce airway inflammation in postinflammation lungs but not in control lungs. One month after inflammation, airway DCs were able to induce Th2 polarization in naive T cells consistent with the up-regulation of the Th2 skewing molecules Ym1/2 and OX-40L compared with DCs of control airways. 
Conclusions: This study provides evidence that sustained maturation of DCs after resolution of Th2-mediated inflammation can contribute to polysensitization.},
  author       = {van Rijt, Leonie and Vos, Nanda and Willart, Monique and Muskens, Femke and Tak, Paul P and van der Horst, Corine and Hoogsteden, Henk C and Lambrecht, Bart},
  issn         = {1073-449X},
  journal      = {AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE},
  keywords     = {remodeling,murine asthma model,Th2,neosensitization,mucosal immunity,DE-NOVO SENSITIZATION,T-CELLS,MURINE MODEL,IN-VIVO,EXPERIMENTAL ASTHMA,RESPIRATORY-TRACT,MOUSE MODEL,ANTIGEN,DISEASE,EXPOSURE},
  language     = {eng},
  number       = {3},
  pages        = {303--311},
  title        = {Persistent activation of dendritic cells after resolution of allergic airway inflammation breaks tolerance to inhaled allergens in mice},
  url          = {http://dx.doi.org/10.1164/rccm.201101-0019OC},
  volume       = {184},
  year         = {2011},
}

Altmetric
View in Altmetric
Web of Science
Times cited: