Prostaglandin E(2) produced by the lung augments the effector phase of allergic inflammation.
Prostaglandin E(2) produced by the lung augments the effector phase of allergic inflammation.
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DOI:
10.4049/jimmunol.1101873
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发表时间:
2012-04-15
期刊:
影响因子:
--
通讯作者:
Koller BH
中科院分区:
文献类型:
--
作者:
Church RJ;Jania LA;Koller BH
Elevated PGE2 is a hallmark of most inflammatory lesions. This lipid mediator can induce the cardinal signs of inflammation, and the beneficial actions of non-steroidal anti-inflammatory drugs are attributed to inhibition of cyclooxygenase COX-1 and COX-2, enzymes essential in the biosynthesis of PGE2 from arachidonic acid. However, both clinical studies and rodent models suggest that, in the asthmatic lung, PGE2 acts to restrain the immune response and limit physiological change secondary to inflammation. To directly address the role of PGE2 in the lung, we examined the development of disease in mice lacking microsomal prostaglandin E synthase 1 (mPGES1), which converts COX-1/COX-2 derived PGH2 to PGE2. We show that mPGES1 determines PGE2 levels in the naïve lung and is required for increases in PGE2 after ovalbumin (OVA) induced allergy. While loss of either COX-1 or COX-2 increases the disease severity, surprisingly mPGES1 −/− mice show reduced inflammation. However, an increase in serum IgE is still observed in the mPGES1 −/− mice, suggesting that loss of PGE2 does not impair induction of a TH2 response. Furthermore, mPGES1 −/− mice expressing a transgenic OVA-specific T cell receptor are also protected, indicating that PGE2 acts primarily after challenge with inhaled antigen. PGE2 produced by the lung plays the critical role in this response, as loss of lung mPGES1 is sufficient to protect against disease. Together this supports a model in which mPGES1-dependent PGE2 produced by populations of cells native to the lung contributes to the effector phase of some allergic responses.
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影响因子:
15.9
作者:
Fabre, JE;Nguyen, M;Koller, BH
通讯作者:
Koller, BH
影响因子:
6.1
作者:
Aggarwal, S.;Moodley, Y. P.;Misso, N. L.
通讯作者:
Misso, N. L.
DOI:
10.4049/jimmunol.0902835
发表时间:
2010-01-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Lundequist A;Nallamshetty SN;Xing W;Feng C;Laidlaw TM;Uematsu S;Akira S;Boyce JA
通讯作者:
Boyce JA
影响因子:
2.9
作者:
Jania LA;Chandrasekharan S;Backlund MG;Foley NA;Snouwaert J;Wang IM;Clark P;Audoly LP;Koller BH
通讯作者:
Koller BH
DOI:
10.1152/ajplung.00492.2005
发表时间:
2006-08-01
影响因子:
4.9
作者:
Lovgren, Alysia Kern;Jania, Leigh A.;Koller, Beverly H.
通讯作者:
Koller, Beverly H.