Secreted PLA2 group X orchestrates innate and adaptive immune responses to inhaled allergen.
Secreted PLA2 group X orchestrates innate and adaptive immune responses to inhaled allergen.
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分泌的 PLA2 X 组协调对吸入过敏原的先天和适应性免疫反应。
DOI:
10.1172/jci.insight.94929
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发表时间:
2017
期刊:
影响因子:
8
通讯作者:
Hallstrand,TealS
中科院分区:
文献类型:
--
作者:
Nolin,JamesD;Lai,Ying;Ogden,HerbertLuke;Manicone,AnneM;Murphy,RyanC;An,Dowon;Frevert,CharlesW;Ghomashchi,Farideh;Naika,GajendraS;Gelb,MichaelH;Gauvreau,GailM;Piliponsky,AdrianM;Altemeier,WilliamA;Hallstrand,TealS
Phospholipase A2 (PLA2) enzymes regulate the formation of eicosanoids and lysophospholipids that contribute to allergic airway inflammation. Secreted PLA2 group X (sPLA2-X) was recently found to be increased in the airways of asthmatics and is highly expressed in airway epithelial cells and macrophages. In the current study, we show that allergen exposure increases sPLA2-X in humans and in mice, and that global deletion of Pla2g10 results in a marked reduction in airway hyperresponsiveness (AHR), eosinophil and T cell trafficking to the airways, airway occlusion, generation of type-2 cytokines by antigen-stimulated leukocytes, and antigen-specific immunoglobulins. Further, we found that Pla2g10–/– mice had reduced IL-33 levels in BALF, fewer type-2 innate lymphoid cells (ILC2s) in the lung, less IL-33–induced IL-13 expression in mast cells, and a marked reduction in both the number of newly recruited macrophages and the M2 polarization of these macrophages in the lung. These results indicate that sPLA2-X serves as a central regulator of both innate and adaptive immune response to proteolytic allergen.
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DOI:
10.1016/j.jaci.2015.05.026
发表时间:
2016
期刊:
The Journal of allergy and clinical immunology
影响因子:
--
作者:
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10.1016/j.jaci.2014.11.037
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2015-07
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DOI:
10.1084/jem.193.2.255
发表时间:
2001-01-15
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