The long term goals of this project are to determine and understand the role of CD4 Th cell subsets in the development, maintenance, reduction, and prevention of allergen-induced airway hyperreactivity. We and others have shown that Th2 cells play a major role in producing and exacerbating allergic inflammation, and it has been assumed that Th cells with the """"""""alternative"""""""" cytokine profile (i.e., Th1 cells) inhibit and prevent allergic inflammation in nonallergic individuals. Preliminary data in our laboratory however, indicate that antigen-specific Th1 cell lines when transferred into recipient mice, do not down regulate airway hyperreactivity but instead cause severe lung disease. This suggests that cell types other than Th1 cells (e.g., those producing TGF-beta), and other cellular processes may be involved in protective immune responses to allergens that down regulate and prevent allergic inflammatory responses in normal nonallergic individuals. The goals therefore of this proposal are to directly examine the capacity of Th1 cells and other types of regulatory cells to mitigate allergic inflammation and allergen- induced airway hyperreactivity. We will directly examine: 1. the role of Th1 and ThO cells in allergic airway hyperreactivity (a model for asthma). 2. the role of TGF-beta producing cells (established by gene transfer) in the regulation of airway hyperreactivity. 3. specific mechanisms that induce tolerance and inhibit airway hyperreactivity in mice rendered unresponsive to ovalbumin (e.g., the role of antigen presentation by B cells and by alveolar macrophages, and the role of costimulation with CTLA-4). We have established several unique models for airway hyperreactivity and intranasal tolerance, have assembled a broad range of reagents, and have exciting preliminary data to perform the proposed experiments. These innovative studies will expand our understanding of the complexity and diversity of Th cells and of immune responses that protect against allergy and asthma. They will provide the basis for development of new disease-modifying strategies to treat and potentially cure patients with allergy and asthma.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Research Project (R01)
Project #
1R01HL062348-01
Application #
2827395
Study Section
Lung Biology and Pathology Study Section (LBPA)
Project Start
1999-04-01
Project End
2003-03-31
Budget Start
1999-04-01
Budget End
2000-03-31
Support Year
1
Fiscal Year
1999
Total Cost
Indirect Cost
Name
Stanford University
Department
Pediatrics
Type
Schools of Medicine
DUNS #
800771545
City
Stanford
State
CA
Country
United States
Zip Code
94305
Kim, Hye Young; Lee, Hyun Jun; Chang, Ya-Jen et al. (2014) Interleukin-17-producing innate lymphoid cells and the NLRP3 inflammasome facilitate obesity-associated airway hyperreactivity. Nat Med 20:54-61
Kim, Hye Young; Chang, Ya-Jen; Subramanian, Srividya et al. (2012) Innate lymphoid cells responding to IL-33 mediate airway hyperreactivity independently of adaptive immunity. J Allergy Clin Immunol 129:216-27.e1-6
Chang, Ya-Jen; Kim, Hye Young; Albacker, Lee A et al. (2011) Innate lymphoid cells mediate influenza-induced airway hyper-reactivity independently of adaptive immunity. Nat Immunol 12:631-8
Chang, Ya-Jen; Kim, Hye Young; Albacker, Lee A et al. (2011) Influenza infection in suckling mice expands an NKT cell subset that protects against airway hyperreactivity. J Clin Invest 121:57-69
Umetsu, Dale T; Dekruyff, Rosemarie H (2010) Natural killer T cells are important in the pathogenesis of asthma: the many pathways to asthma. J Allergy Clin Immunol 125:975-9
Kim, Hye Young; DeKruyff, Rosemarie H; Umetsu, Dale T (2010) The many paths to asthma: phenotype shaped by innate and adaptive immunity. Nat Immunol 11:577-84
Akbari, O; Stock, P; Singh, A K et al. (2010) PD-L1 and PD-L2 modulate airway inflammation and iNKT-cell-dependent airway hyperreactivity in opposing directions. Mucosal Immunol 3:81-91
Lee, Hyun-Hee; Meyer, Everett H; Goya, Sho et al. (2010) Apoptotic cells activate NKT cells through T cell Ig-like mucin-like-1 resulting in airway hyperreactivity. J Immunol 185:5225-35
Matangkasombut, Ponpan; Marigowda, Gautham; Ervine, Aaron et al. (2009) Natural killer T cells in the lungs of patients with asthma. J Allergy Clin Immunol 123:1181-5
Kim, Hye Young; Pichavant, Muriel; Matangkasombut, Ponpan et al. (2009) The development of airway hyperreactivity in T-bet-deficient mice requires CD1d-restricted NKT cells. J Immunol 182:3252-61

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