Hydroxylsafflower Yellow A inhibits microglial NLRP3-mediated neural function injury after ischemic stroke through JAK2/STAT3 signaling pathway
10.3969/j.issn.1000-484X.2025.08.005
- VernacularTitle:羟基红花黄色素A通过JAK2/STAT3信号通路抑制缺血性脑卒中后小胶质细胞NLRP3介导的神经功能损伤
- Author:
Lijun YIN
1
;
Yige WU
;
Cunyan DAN
;
Kexin LIU
;
Jiaxu ZHANG
;
Cungen MA
;
Dong MA
;
Lijuan SONG
Author Information
1. 山西中医药大学国家中医药管理局多发性硬化益气活血重点研究室/神经生物学研究中心,晋中 030619
- Publication Type:Journal Article
- Keywords:
Cerebral ischemia;
Microglia;
HSYA;
NLRP3;
JAK2/STAT3 signaling pathway
- From:
Chinese Journal of Immunology
2025;41(8):1820-1825,1832
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore effects and mechanism of Hydroxylsafflower Yellow A(HSYA)on expression of NLRP3 in glial cells after cerebral ischemic injury.Methods:A middle cerebral artery occlusion/reperfusion(MCAO/R)model was established in male SD rats.After successfully modeling for 24 h,Longa scoring and corner test were used to evaluate degree of neurological dys-function.Western blot and immunofluorescence were used to detect expressions of JAK2/STAT3 molecules and NLRP3,ELISA was used to measure IL-1β,IL-6 and TNF-α levels.A glucose-oxygen deprivation/reperfusion(OGD/R)model was established in microg-lia,and JAK2 and STAT3 inhibitor AG490 was used to further verify action of HSYA on NLRP3.Results:Compared with sham group,neurological dysfunction aggravated in MCAO/R group(P<0.01),HSYA treatment improved neurological function(P<0.01).Expres-sions of p-JAK2,p-STAT3 and NLRP3 in MCAO/R group were higher than those in the sham group(P<0.01);and HSYA treatment reduced expressions of p-JAK2,p-STAT3 and NLRP3(P<0.01).Levels of inflammatory factors IL-1β,IL-6 and TNF-α were higher in MCAO/R group than sham group(P<0.01),and HSYA inhibited expressions of IL-1β,IL-6 and TNF-α(P<0.01 or P<0.05).In vi-tro experiments showed expressions of p-JAK2,p-STAT3 and NLRP3 in OGD/R group were significantly higher than normal control group(P<0.01),after adding AG490,phosphorylation of JAK2 and STAT3 decreased,NLRP3 expression was inhibited(P<0.01).Inflammatory cytokines IL-1β,IL-6 and TNF-α levels were higher in OGD/R group than normal control group(P<0.01),and HSYA inhibited expressions of IL-1β,IL-6 and TNF-α(P<0.01 or P<0.05).Conclusion:HSYA alleviates brain damage,probably by regu-lating JAK2/STAT3 signaling pathway and inhibiting NLRP3 expression in microglia after cerebral ischemia and hypoxia.
