5-Bromo-3,4-dihydroxybenzaldehyde from Polysiphonia Morrowii attenuate IgE/BSA-stimulated mast cell activation and passive cutaneous anaphylaxis in mice

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Title
5-Bromo-3,4-dihydroxybenzaldehyde from Polysiphonia Morrowii attenuate IgE/BSA-stimulated mast cell activation and passive cutaneous anaphylaxis in mice
Author(s)
E J Han; I P S Fernando; E A Kim; J Kim; Kyungsook Jung; S Y Kim; S H Cha; K N Kim; S J Heo; G Ahn
Bibliographic Citation
Biochemical Pharmacology, vol. 178, pp. 114087-114087
Publication Year
2020
Abstract
The present study investigates the anti-allergic activity of the marine algal bromophenol, 3-bromo-4,5-dihydroxybenzaldehyde (BDB), isolated from Polysiphonia morrowii Harvey in immunoglobulin (Ig)E/bovine serum albumin (BSA)-stimulated mouse bone marrow-derived cultured mast cells (BMCMCs) and a passive cutaneous anaphylaxis (PCA) mice ear model. BDB effectively inhibited β-hexosaminidase release (IC50 = 80.12 μM), in IgE/BSA-stimulated BMCMCs without a cytotoxic response. Also, BDB down-regulated the expression or secretion of cytokines, interleukin (IL)-1β, IL-4, IL-5, IL-6, IL-10, IL-13, interferon (IFN)-γ, and tumor necrosis factor (TNF)-α and the chemokine (thymus and activation-regulated chemokine (TARC). The above effects could be attributed to the dose-dependent decrease of FcεRI expression on the surface of BMCMCs and its stable IgE binding. Moreover, BDB suppressed the nuclear factor (NF)-κB and spleen tyrosine kinase (SYK)-linker for T-cell activation (LAT)-GRB2 associated binding protein 2 (Gab2) signaling axis activated by IgE/BSA stimulation. Furthermore, oral administration of BDB to IgE-sensitized mice effectively attenuated IgE-triggered PCA reaction. Collectively, the anti-allergic effects of BDB suggest its potential applicability as a candidate for in-depth test trials.
Keyword
5-Bromo-3,4-dihydroxybenzaldehydeAnti-allergicMast cells, Immunoglobulin EPassive cutaneous anaphylaxis
ISSN
0006-2952
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.bcp.2020.114087
Type
Article
Appears in Collections:
Jeonbuk Branch Institute > Functional Biomaterial Research Center > 1. Journal Articles
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