Title |
Divergent functions for airway epithelial matrix metalloproteinase 7 and retinoic acid in experimental asthma
|
---|---|
Published in |
Nature Immunology, March 2009
|
DOI | 10.1038/ni.1719 |
Pubmed ID | |
Authors |
Sangeeta Goswami, Pornpimon Angkasekwinai, Ming Shan, Kendra J Greenlee, Wade T Barranco, Sumanth Polikepahad, Alexander Seryshev, Li-zhen Song, David Redding, Bhupinder Singh, Sanjiv Sur, Prescott Woodruff, Chen Dong, David B Corry, Farrah Kheradmand |
Abstract |
The innate immune response of airway epithelial cells to airborne allergens initiates the development of T cell responses that are central to allergic inflammation. Although proteinase allergens induce the expression of interleukin 25, we show here that epithelial matrix metalloproteinase 7 (MMP7) was expressed during asthma and was required for the maximum activity of interleukin 25 in promoting the differentiation of T helper type 2 cells. Allergen-challenged Mmp7(-/-) mice had less airway hyper-reactivity and production of allergic inflammatory cytokines and higher expression of retinal dehydrogenase 1. Inhibition of retinal dehydrogenase 1 restored the asthma phenotype of Mmp7(-/-) mice and inhibited the responses of lung regulatory T cells, whereas exogenous administration of retinoic acid attenuated the asthma phenotype. Thus, MMP7 coordinates allergic lung inflammation by activating interleukin 25 while simultaneously inhibiting retinoid-dependent development of regulatory T cells. |
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Professor | 7 | 10% |
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Other | 8 | 11% |
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Chemistry | 3 | 4% |
Other | 6 | 8% |
Unknown | 13 | 18% |