ORIGINAL PAPER
Paeoniflorin inhibits degranulation of mast cells through suppressing the cGAS/STING signaling pathway
1
Department of Preventive and Health Care, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, P.R. China
2
Department of Clinical Laboratory, Jining Chinese Medicine Hospital, Jining, Shandong, P.R. China
3
Department of Prestigious TCM Doctors’ Experiences, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, P.R. China
4
National Data Center of Traditional Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, P.R. China
Submission date: 2024-06-12
Final revision date: 2024-11-28
Acceptance date: 2025-02-12
Online publication date: 2025-08-25
Publication date: 2025-08-25
KEYWORDS
ABSTRACT
Introduction:
Allergic rhinitis is an allergic disease that affects the nasal mucosa, and its incidence has been increasing significantly in recent years. Paeoniflorin (PF) is the main chemical component of total glucosides of paeony and is reported to have an excellent effect on anti-allergic inflammation. In this study, we aimed to investigate the mechanism of PF regulating the degranulation of mast cells induced by dinitrophenol (DNP)-human serum albumin (DNP-HSA).
Material and methods:
The effect of PF on the degranulation of mast cells was evaluated through the measurement of histamine, β-hexosaminidase, and intracellular calcium level, and the signaling pathway was screened through western blot assay and molecular docking.
Results:
The results showed that PF treatment reduced the release of histamine and β-hexosaminidase, and reduced the intracellular calcium level in mast cells with DNP-HSA treatment. In addition, PF downregulated the protein levels of cGAS and STING to inactivate the cGAS/STING signaling pathway, in which the inhibitory effects of PF on mast cells were reversed by 5,6-imethylxanthenone-4-acetic acid (DMXAA, a STING agonist).
Conclusions:
In conclusion, PF inhibits degranulation of mast cells through the cGAS/STING signaling pathway, which provides a theoretical basis for the application of PF in allergic rhinitis therapy.
Allergic rhinitis is an allergic disease that affects the nasal mucosa, and its incidence has been increasing significantly in recent years. Paeoniflorin (PF) is the main chemical component of total glucosides of paeony and is reported to have an excellent effect on anti-allergic inflammation. In this study, we aimed to investigate the mechanism of PF regulating the degranulation of mast cells induced by dinitrophenol (DNP)-human serum albumin (DNP-HSA).
Material and methods:
The effect of PF on the degranulation of mast cells was evaluated through the measurement of histamine, β-hexosaminidase, and intracellular calcium level, and the signaling pathway was screened through western blot assay and molecular docking.
Results:
The results showed that PF treatment reduced the release of histamine and β-hexosaminidase, and reduced the intracellular calcium level in mast cells with DNP-HSA treatment. In addition, PF downregulated the protein levels of cGAS and STING to inactivate the cGAS/STING signaling pathway, in which the inhibitory effects of PF on mast cells were reversed by 5,6-imethylxanthenone-4-acetic acid (DMXAA, a STING agonist).
Conclusions:
In conclusion, PF inhibits degranulation of mast cells through the cGAS/STING signaling pathway, which provides a theoretical basis for the application of PF in allergic rhinitis therapy.
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