The role of the prostaglandin D2 receptor, DP, in eosinophil trafficking
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The role of the prostaglandin D2 receptor, DP, in eosinophil trafficking. / Schratl, Petra; Royer, Julia F; Kostenis, Evi; Ulven, Trond; Sturm, Eva M; Waldhoer, Maria; Hoefler, Gerald; Schuligoi, Rufina; Lippe, Irmgard Th; Peskar, Bernhard A; Heinemann, Akos.
In: Journal of Immunology, Vol. 179, No. 7, 01.10.2007, p. 4792-4799.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - The role of the prostaglandin D2 receptor, DP, in eosinophil trafficking
AU - Schratl, Petra
AU - Royer, Julia F
AU - Kostenis, Evi
AU - Ulven, Trond
AU - Sturm, Eva M
AU - Waldhoer, Maria
AU - Hoefler, Gerald
AU - Schuligoi, Rufina
AU - Lippe, Irmgard Th
AU - Peskar, Bernhard A
AU - Heinemann, Akos
PY - 2007/10/1
Y1 - 2007/10/1
N2 - Prostaglandin (PG) D2 is a major mast cell product that acts via two receptors, the D-type prostanoid (DP) and the chemoattractant receptor-homologous molecule expressed on Th2 cells (CRTH2) receptors. Whereas CRTH2 mediates the chemotaxis of eosinophils, basophils, and Th2 lymphocytes, the role of DP has remained unclear. We report in this study that, in addition to CRTH2, the DP receptor plays an important role in eosinophil trafficking. First, we investigated the release of eosinophils from bone marrow using the in situ perfused guinea pig hind limb preparation. PGD2 induced the rapid release of eosinophils from bone marrow and this effect was inhibited by either the DP receptor antagonist BWA868c or the CRTH2 receptor antagonist ramatroban. In contrast, BWA868c did not inhibit the release of bone marrow eosinophils when this was induced by the CRTH2-selective agonist 13,14-dihydro-15-keto-PGD2. In additional experiments, we isolated bone marrow eosinophils from the femoral cavity and found that these cells migrated toward PGD2. We also observed that BWA868c inhibited this response to a similar extent as ramatroban. Finally, using immunohistochemistry we could demonstrate that eosinophils in human bone marrow specimens expressed DP and CRTH2 receptors at similar levels. Eosinophils isolated from human peripheral blood likewise expressed DP receptor protein but at lower levels than CRTH2. In agreement with this, the chemotaxis of human peripheral blood eosinophils was inhibited both by BWA868c and ramatroban. These findings suggest that DP receptors comediate with CRTH2 the mobilization of eosinophils from bone marrow and their chemotaxis, which might provide the rationale for DP antagonists in the treatment of allergic disease Udgivelsesdato: 2007-Oct-1
AB - Prostaglandin (PG) D2 is a major mast cell product that acts via two receptors, the D-type prostanoid (DP) and the chemoattractant receptor-homologous molecule expressed on Th2 cells (CRTH2) receptors. Whereas CRTH2 mediates the chemotaxis of eosinophils, basophils, and Th2 lymphocytes, the role of DP has remained unclear. We report in this study that, in addition to CRTH2, the DP receptor plays an important role in eosinophil trafficking. First, we investigated the release of eosinophils from bone marrow using the in situ perfused guinea pig hind limb preparation. PGD2 induced the rapid release of eosinophils from bone marrow and this effect was inhibited by either the DP receptor antagonist BWA868c or the CRTH2 receptor antagonist ramatroban. In contrast, BWA868c did not inhibit the release of bone marrow eosinophils when this was induced by the CRTH2-selective agonist 13,14-dihydro-15-keto-PGD2. In additional experiments, we isolated bone marrow eosinophils from the femoral cavity and found that these cells migrated toward PGD2. We also observed that BWA868c inhibited this response to a similar extent as ramatroban. Finally, using immunohistochemistry we could demonstrate that eosinophils in human bone marrow specimens expressed DP and CRTH2 receptors at similar levels. Eosinophils isolated from human peripheral blood likewise expressed DP receptor protein but at lower levels than CRTH2. In agreement with this, the chemotaxis of human peripheral blood eosinophils was inhibited both by BWA868c and ramatroban. These findings suggest that DP receptors comediate with CRTH2 the mobilization of eosinophils from bone marrow and their chemotaxis, which might provide the rationale for DP antagonists in the treatment of allergic disease Udgivelsesdato: 2007-Oct-1
KW - Animals
KW - Bone Marrow
KW - Cells, Cultured
KW - Chemotaxis
KW - Eosinophils
KW - Femur
KW - Guinea Pigs
KW - Humans
KW - Ligands
KW - Prostaglandins D
KW - Receptors, Immunologic
KW - Receptors, Prostaglandin
M3 - Journal article
VL - 179
SP - 4792
EP - 4799
JO - Journal of Immunology
JF - Journal of Immunology
SN - 0022-1767
IS - 7
ER -
ID: 189159204