Publication Date:
2013-08-21
Description:
Proteinases and the innate immune receptor Toll-like receptor 4 (TLR4) are essential for expression of allergic inflammation and diseases such as asthma. A mechanism that links these inflammatory mediators is essential for explaining the fundamental basis of allergic disease but has been elusive. Here, we demonstrate that TLR4 is activated by airway proteinase activity to initiate both allergic airway disease and antifungal immunity. These outcomes were induced by proteinase cleavage of the clotting protein fibrinogen, yielding fibrinogen cleavage products that acted as TLR4 ligands on airway epithelial cells and macrophages. Thus, allergic airway inflammation represents an antifungal defensive strategy that is driven by fibrinogen cleavage and TLR4 activation. These findings clarify the molecular basis of allergic disease and suggest new therapeutic strategies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3898200/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3898200/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Millien, Valentine Ongeri -- Lu, Wen -- Shaw, Joanne -- Yuan, Xiaoyi -- Mak, Garbo -- Roberts, Luz -- Song, Li-Zhen -- Knight, J Morgan -- Creighton, Chad J -- Luong, Amber -- Kheradmand, Farrah -- Corry, David B -- AI057696/AI/NIAID NIH HHS/ -- AI070973/AI/NIAID NIH HHS/ -- CA125123/CA/NCI NIH HHS/ -- HL75243/HL/NHLBI NIH HHS/ -- K02 HL075243/HL/NHLBI NIH HHS/ -- R01 AI057696/AI/NIAID NIH HHS/ -- R01 HL095382/HL/NHLBI NIH HHS/ -- R01 HL117181/HL/NHLBI NIH HHS/ -- R25GM56929/GM/NIGMS NIH HHS/ -- T32 GM088129/GM/NIGMS NIH HHS/ -- T32GM088129/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2013 Aug 16;341(6147):792-6. doi: 10.1126/science.1240342.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Translational Biology and Molecular Medicine Program, Baylor College of Medicine, Houston, TX, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23950537" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Aspergillus niger/growth & development/*immunology
;
Aspergillus oryzae/enzymology
;
Bronchoalveolar Lavage Fluid/cytology
;
Epithelial Cells/immunology/metabolism
;
Fibrinogen/*metabolism
;
Immunity, Innate
;
Ligands
;
Macrophage Activation
;
Macrophages/immunology/metabolism/microbiology
;
Mice
;
Mice, Inbred BALB C
;
Mice, Inbred C57BL
;
Peptide Hydrolases/immunology/*metabolism
;
Respiratory Hypersensitivity/*immunology/*metabolism
;
Respiratory Mucosa/cytology/immunology/metabolism
;
Th2 Cells/immunology
;
Toll-Like Receptor 4/genetics/*metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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