Cysteinyl leukotriene receptor 1 is also a pyrimidinergic receptor and is expressed by human mast cells

Cysteinyl leukotriene receptor 1 is also a pyrimidinergic receptor and is expressed by human mast cells.

The cysteinyl leukotrienes (cys-LTs) LTC(4), LTD(4), and LTE(4) are a class of peptide-conjugated lipids formed from arachidonic acid and released during activation of mast cells (MCs). We now report that human cord-blood-derived MCs (hMCs) express the CysLT1 receptor, which responds not only to inflammation-derived cys-LTs, but also to a pyrimidinergic ligand, UDP. hMCs express both CysLT1 pro...

Differential Regulation of Cysteinyl Leukotriene Receptor Signaling by Protein Kinase C in Human Mast Cells

Cysteinyl leukotrienes (cys-LTs) are a group of lipid mediators that are potent bronchoconstrictors, powerful inducers of vascular leakage and potentiators of airway hyperresponsiveness. Cys-LTs play an essential role in asthma and are synthesized as well as activated in mast cells (MCs). Cys-LTs relay their effects mainly through two known GPCRs, CysLT1R and CysLT2R. Although protein kinase C ...

GPR17 is a negative regulator of the cysteinyl leukotriene 1 receptor response to leukotriene D4.

The cysteinyl leukotrienes (cys-LTs) are proinflammatory lipid mediators acting on the type 1 cys-LT receptor (CysLT(1)R) to mediate smooth muscle constriction and vascular permeability. GPR17, a G protein-coupled orphan receptor with homology to the P2Y and cys-LT receptors, failed to mediate calcium flux in response to leukotriene (LT) D(4) with stable transfectants. However, in stable cotran...

Cysteinyl Leukotriene 1 Receptor Gene Functional Characterization of Human

Functional characterization of human cysteinyl leukotriene 1 receptor gene structure.

The 5-lipoxygenase pathway has been strongly implicated in the pathogenesis of chronic inflammatory disorders, such as bronchial asthma and atherosclerosis. Cysteinyl leukotrienes (cysLTs), 5-lipoxygenase pathway products, are recognized now not only as important factors in asthmatic inflammation, but also as mediators of cell trafficking and innate immune responses. To study a role of cysLTs i...