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Regulation of corticotropin‐releasing hormone receptor‐2 expression in human cord blood‐derived cultured mast cells

Papadopoulou, Nikoletta G, Oleson, Lauren, Kempuraj, Duraisamy, Donelan, Jill, Cetrulo, Curtis L, Theoharides, Theoharis C·2005·Journal of Molecular Endocrinology
DOI 10.1677/jme.1.01833
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Abstract

Corticotropin-releasing hormone (CRH) is secreted under stress and regulates the hypothalamic-pituitary-adrenal (HPA) axis; it is also secreted outside the brain where it exerts proinflammatory effects, possibly through mast cell activation. Mast cells are necessary for allergic reactions, but are increasingly implicated in acquired immunity and inflammatory diseases worsened by stress. Acute stress and intradermal CRH induced murine skin mast cell activation and increased vascular permeability that was absent in W/Wv mast cell deficient mice. The presence of functional CRH receptors (CRH-R) was recently reported on human mast cells. Here, we studied the expression of CRH-R1 and CRH-R2 by semiquantitative reverse transcriptase-polymerase chain reaction (RT-PCR) and fluorescent immunocytochemistry in human umbilical cord blood-derived cultured mast cells (hCBMCs) treated with Interleukin (IL)-1, IL-4 or lipopolysaccharide (LPS). Ten week-old hCBMCs cultured in the presence of Stem cell factor (SCF) and IL-6 were positive for both CRH-R1 and CRH-R2. However, the expression of only CRH-R2 mRNA and protein was induced by priming hCBMCs with IL-4 for the last three weeks of culture. Further analysis of the CR-H R2 mRNA expression showed that addition of IL-1 or LPS for 6 h increased only CRH-R2 gene expression. CRH had negligible effect on IL-6 secretion from non-primed hCBMCs, but induced release from IL-4 primed cells. Interestingly, LPS alone increased IL-6 release in non-primed cells, but lost this effect in primed cells. These results further implicate mast cells and CRH in either initiating or potentiating inflammatory diseases, especially those affected by stress.

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Metadata

Authors
Papadopoulou, N. G., Oleson, L., Kempuraj, D., Donelan, J., Cetrulo, C. L., & Theoharides, T. C.
Affiliations
  • Departments of Pharmacology and Experimental Therapeutics, 1
  • Department of Obstetrics and Gynecology, Tufts-New England Medical Center, Boston, MA 02111, USA 4
Venue
Journal of Molecular Endocrinology
Publisher
Bioscientifica
Published
2005-12-01
Volume
35
Issue
3
Pages
R1-R8
ISSN
  • 1479-6813
  • 0952-5041
DOI
10.1677/jme.1.01833
Cited by
30
References
0
Language
en

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CoChat. (2026). Citation check: Regulation of corticotropin‐releasing hormone receptor‐2 expression in human cord blood‐derived cultured mast cells. https://app.cochat.ai/papers/10.1677/jme.1.01833
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Papadopoulou, N. G., Oleson, L., Kempuraj, D., Donelan, J., Cetrulo, C. L., & Theoharides, T. C. (2005). Regulation of corticotropin‐releasing hormone receptor‐2 expression in human cord blood‐derived cultured mast cells. Journal of Molecular Endocrinology. https://doi.org/10.1677/jme.1.01833