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Role of Leukotriene B4 Receptor-2 in Mast Cells in Allergic Airway Inflammation.


ABSTRACT: Mast cells are effector cells in the immune system that play an important role in the allergic airway inflammation. Recently, it was reported that BLT2, a low-affinity leukotriene (LT) B4 receptor, plays a pivotal role in the pathogenesis of allergic airway inflammation through its action in mast cells. We observed that highly elevated expression levels of BLT2 are critical for the pathogenesis leading to allergic airway inflammation, and that if BLT2 expression is downregulated by siBLT2-mediated knockdown, allergic inflammation is dramatically alleviated. Furthermore, we demonstrated that BLT2 mediates the synthesis of vascular endothelial growth factor (VEGF) and Th2 cytokines, such as interleukin (IL)-13, in mast cells during allergic inflammation. Based on the critical roles of BLT2 in mast cells in allergic inflammation, anti-BLT2 strategies could contribute to the development of new therapies for allergic airway inflammation.

SUBMITTER: Kwon SY 

PROVIDER: S-EPMC6627931 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Role of Leukotriene B<sub>4</sub> Receptor-2 in Mast Cells in Allergic Airway Inflammation.

Kwon Sun-Young SY   Kim Jae-Hong JH  

International journal of molecular sciences 20190614 12


Mast cells are effector cells in the immune system that play an important role in the allergic airway inflammation. Recently, it was reported that BLT2, a low-affinity leukotriene (LT) B<sub>4</sub> receptor, plays a pivotal role in the pathogenesis of allergic airway inflammation through its action in mast cells. We observed that highly elevated expression levels of BLT2 are critical for the pathogenesis leading to allergic airway inflammation, and that if BLT2 expression is downregulated by si  ...[more]

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