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Isobavachin attenuates FcεRI-mediated inflammatory allergic responses by regulating SHP-1-dependent Fyn/Lyn/Syk/Lck signaling.

Isobavachin attenuates FcεRI-mediated inflammatory allergic responses by regulating SHP-1-dependent Fyn/Lyn/Syk/Lck signaling.

Authors :
Sim KH
Lee E
Shrestha P
Choi BH
Hong J
Lee YJ
Source :
Biochemical pharmacology [Biochem Pharmacol] 2025 Feb; Vol. 232, pp. 116698. Date of Electronic Publication: 2024 Dec 04.
Publication Year :
2025

Abstract

Isobavachin, isolated from Psoralea corylifolia L. exhibits therapeutic potential for osteoporosis or skin disease. Here, we evaluated the pharmacological effects of isobavachin on IgE-dependent inflammatory allergic reactions, as well as the underlying mechanisms, in bone marrow-derived mast cells and a mouse model of passive cutaneous anaphylaxis (PCA). Isobavachin reduced IgE/Ag-stimulated degranulation, eicosanoid (leukotriene C <subscript>4</subscript> and prostaglandin D <subscript>2</subscript> ) generation, and release of pro-inflammatory cytokines (tumor necrosis factor-α (TNF-α) and interleukin (IL)-6). Mechanistic studies revealed that isobavachin suppressed activation of Fyn, Lyn, spleen tyrosine kinase (Syk), and lymphocyte-specific-protein-kinase (Lck), receptor-proximal tyrosine kinases that initiate and play a central role in FcɛRI-mediated mast cell activation, as well as their common downstream signaling molecules including linker for activation of T cells, phospholipase Cγ1, AKT, mitogen-activated protein kinases (MAPKs), and intracellular Ca <superscript>2+</superscript> . Additionally, isobavachin increased phosphorylation of Src homology region 2 domain-containing phosphatase-1 (SHP-1), thereby strengthening its interaction with Syk and Lck as well as Fyn and Lyn, resulting in de-phosphorylation of these proximal tyrosine kinases. Genetic knockdown of SHP-1 reversed the inhibitory effects of isobavachin on mast cell activation, as well as the related signaling pathways, indicating that the inhibitory effects of isobavachin are mediated by negative regulation of SHP-1-dependent Fyn, Lyn, Syk and Lck. The anti-inflammatory properties of isobavachin were also examined in macrophages. Isobavachin suppressed production of lipopolysaccharide-stimulated production of pro-inflammatory cytokines and nitric oxide. Furthermore, oral administration of isobavachin attenuated mast cell-mediated PCA reactions in mice. These results suggest that isobavachin is a potential treatment for mast cell-mediated allergic inflammatory diseases.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2024 Elsevier Inc. All rights reserved.)

Details

Language :
English
ISSN :
1873-2968
Volume :
232
Database :
MEDLINE
Journal :
Biochemical pharmacology
Publication Type :
Academic Journal
Accession number :
39643121
Full Text :
https://doi.org/10.1016/j.bcp.2024.116698