EP4 and EP2 receptor activation of protein kinase A by prostaglandin E2 impairs macrophage phagocytosis of Clostridium sordellii.
EP4 and EP2 receptor activation of protein kinase A by prostaglandin E2 impairs macrophage phagocytosis of Clostridium sordellii.
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DOI:
10.1111/aji.12153
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发表时间:
2014-01
期刊:
影响因子:
--
通讯作者:
Aronoff DM
中科院分区:
文献类型:
--
作者:
Rogers LM;Thelen T;Fordyce K;Bourdonnay E;Lewis C;Yu H;Zhang J;Xie J;Serezani CH;Peters-Golden M;Aronoff DM
Clostridium sordellii causes endometrial infections but little is known regarding host defenses against this pathogen. We tested the hypothesis that the immunoregulatory lipid prostaglandin (PG) E2 suppresses human macrophage clearance of C. sordellii through receptor-induced increases in intracellular cAMP. The THP-1 macrophage cell line was used to quantify C. sordellii phagocytosis. PGE2 increased cAMP levels, activated protein kinase A (PKA), and inhibited the class A scavenger receptor-dependent phagocytosis of C. sordellii. Activation of the EP2 and EP4 receptors increased intracellular cAMP and inhibited phagocytosis, with evidence favoring a more important role for EP4 over EP2. This was supported by EP receptor expression data and the use of pharmacological receptor antagonists. In addition, the PKA isoform RI appeared to be more important than RII in mediating the suppression of ingestion of C. sordellii. The endogenous lipid mediator PGE2 impairs human innate immune responses against C. sordellii.
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影响因子:
11.8
作者:
Goulet, Veronique;Hebert, Marjolaine;Desenclos, Jean-Claude
通讯作者:
Desenclos, Jean-Claude
DOI:
10.4049/jimmunol.1200821
发表时间:
2012-09-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Hasegawa M;Kamada N;Jiao Y;Liu MZ;Núñez G;Inohara N
通讯作者:
Inohara N
DOI:
10.1016/s1388-1981(99)00164-x
发表时间:
2000-01-17
影响因子:
4.8
作者:
Abramovitz, M;Adam, M;Metters, KM
通讯作者:
Metters, KM
影响因子:
2.5
作者:
KOVATZ, S;ARBER, I;BERNHEIM, J
通讯作者:
BERNHEIM, J
影响因子:
4.4
作者:
Aronoff, David M.;Hao, Yibai;Peters-Golden, Marc
通讯作者:
Peters-Golden, Marc