Calcitonin gene-related peptide inhibits chemokine production by human dermal microvascular endothelial cells

被引:62
作者
Huang, Jing [1 ]
Stohl, Lori L. [1 ]
Zhou, Xi [2 ]
Ding, Wanhong [1 ]
Granstein, Richard D. [1 ]
机构
[1] Weill Cornell Med Coll, Dept Dermatol, New York, NY 10021 USA
[2] Weill Cornell Med Coll, Dept Publ Hlth, New York, NY 10021 USA
关键词
CGRP; Endothelial cell; Chemotaxis; NF-kappa B; Neutrophil; Mononuclear cell; NF-KAPPA-B; MONOCYTE CHEMOATTRACTANT PROTEIN-1; RECEPTOR-LIKE RECEPTOR; SMOOTH-MUSCLE-CELLS; ALVEOLAR EPITHELIAL-CELLS; SIGNAL-TRANSDUCTION; HUMAN-SKIN; CONTACT HYPERSENSITIVITY; ADRENOMEDULLIN RECEPTORS; ATOPIC-DERMATITIS;
D O I
10.1016/j.bbi.2011.02.007
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
This study examined whether the sensory neuropeptide calcitonin gene-related peptide (CGRP) inhibits release of chemokines by dermal microvascular endothelial cells. Dermal blood vessels are associated with nerves containing CGRP, suggesting that CGRP-containing nerves may regulate cutaneous inflammation through effects on vessels. We examined CGRP effects on stimulated chemokine production by a human dermal microvascular endothelial cell line (HMEC-1) and primary human dermal microvascular endothelial cells (pHDMECs). HMEC-1 cells and pHDMECs expressed mRNA for components of the CGRP and adrenomedullin receptors and CGRP inhibited LPS-induced production of the chemokines CXCL8. CCL2, and CXCL1 by both HMEC-1 cells and pHDMECs. The receptor activity-modifying protein (RAMP)1/calcitonin receptor-like receptor (CL)-specific antagonists CGRP(8-37) and BIBN4096BS, blocked this effect of CGRP in a dose-dependent manner. CGRP prevented LPS-induced I kappa B alpha degradation and NF-kappa B binding to the promoters of CXCL1, CXCL8 and CCL2 in HMEC-1 cells and Bay 11-7085, an inhibitor of NF-kappa B activation, suppressed LPS-induced production of CXCL1. CXCL8 and CCL2. Thus, the NF-kappa B pathway appears to be involved in CGRP-mediated suppression of chemokine production. Accordingly. CGRP treatment of LPS-stimulated HMEC-1 cells inhibited their ability to chemoattract human neutrophils and mononuclear cells. Elucidation of this pathway may suggest new avenues for therapeutic manipulation of cutaneous inflammation. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:787 / 799
页数:13
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