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A CD1d-dependent Antagonist Inhibits the Activation of Invariant NKT Cells and Prevents Development of Allergen-induced Airway Hyperreactivity

Abstract

The prevalence of asthma continues to increase in westernized countries, and optimal treatment remains a significant therapeutic challenge. Recently, CD1d-restricted invariant NKT (iNKT) cells were found to play a critical role in the induction of airway hyperreactivity (AHR) in animal models and are associated with asthma in humans. To test whether iNKT cell-targeted therapy could be used to treat allergen-induced airway disease, mice were sensitized with OVA and treated with di-palmitoyl-phosphatidyl-ethanolamine polyethylene glycol (DPPE-PEG), a CD1d-binding lipid antagonist. A single dose of DPPE-PEG prevented the development of AHR and pulmonary infiltration of lymphocytes upon OVA challenge, but had no effect on the development of OVA-specific Th2 responses. In addition, DPPE-PEG completely prevented the development of AHR after administration of alpha-galactosylceramide (alpha-GalCer) intranasally. Furthermore, we demonstrate that DPPE-PEG acts as antagonist to alpha-GalCer and competes with alpha-GalCer for binding to CD1d. Finally, we show that DPPE-PEG completely inhibits the alpha-GalCer-induced phosphorylation of ERK tyrosine kinase in iNKT cells, suggesting that DPPE-PEG specifically blocks TCR signaling and thus activation of iNKT cells. Because iNKT cells play a critical role in the development of AHR, the inhibition of iNKT activation by DPPE-PEG suggests a novel approach to treat iNKT cell-mediated diseases such as asthma.

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References
1.
Hamzaoui A, Cheik Rouhou S, Grairi H, Abid H, Ammar J, Chelbi H . NKT cells in the induced sputum of severe asthmatics. Mediators Inflamm. 2006; 2006(2):71214. PMC: 1592585. DOI: 10.1155/MI/2006/71214. View

2.
Burrows B, Martinez F, Halonen M, BARBEE R, Cline M . Association of asthma with serum IgE levels and skin-test reactivity to allergens. N Engl J Med. 1989; 320(5):271-7. DOI: 10.1056/NEJM198902023200502. View

3.
Kim E, Battaile J, Patel A, You Y, Agapov E, Grayson M . Persistent activation of an innate immune response translates respiratory viral infection into chronic lung disease. Nat Med. 2008; 14(6):633-40. PMC: 2575848. DOI: 10.1038/nm1770. View

4.
Matangkasombut P, Pichavant M, Yasumi T, Hendricks C, Savage P, DeKruyff R . Direct activation of natural killer T cells induces airway hyperreactivity in nonhuman primates. J Allergy Clin Immunol. 2008; 121(5):1287-9. PMC: 2655765. DOI: 10.1016/j.jaci.2008.02.006. View

5.
Arreaza G, Cameron M, Jaramillo A, Gill B, Hardy D, Laupland K . Neonatal activation of CD28 signaling overcomes T cell anergy and prevents autoimmune diabetes by an IL-4-dependent mechanism. J Clin Invest. 1997; 100(9):2243-53. PMC: 508420. DOI: 10.1172/JCI119762. View