Astragaloside IV regulates the ferroptosis signaling pathway via the Nrf2/SLC7A11/GPX4 axis to inhibit PM2.5-mediated lung injury in mice.
Abstract Source:Int Immunopharmacol. 2022年9月15日; 112:109186。 EPUB 2022 9月15日。pmid: 36115280 36115280 Shihua Shi, Caixia Pei, Yongcan Wu, Zherui Shen, Fei Wang, Zhenxing Wang
Article Affiliation:Xiaoming Wang
Abstract:OBJECTIVE: Exposure to PM2.5 will increase the risk of respiratory disease and increase the burden of social health care.星形胶质苷(AST-IV)是中国草药阿斯托拉素膜的主要生物活性物质之一,它具有各种药理作用。铁凋亡是一种新型的细胞死亡形式,其特征是铁依赖性脂质活性氧的积累物种(ROS)。目前尚不清楚PM2.5诱导的肺损伤中是否有典型的铁凋亡特征。 This study investigates whether PM2.5-induced lung injury in mice has a special form of ferroptosis and the specific protective mechanism of Ast-IV.
SUBJECTS AND METHODS: Forty-two male C57BL/6J mice were randomly divided into six groups (n = 7 per group): NS group (normal盐水),AST组(AST-IV 100mg/kg),PM2.5组,AST-L组(AST-IV 50mg/kg+PM2.5),AST-H组(AST-IV 100mg/kg+PM2.5)和ERA组(AST-IV 100mg/kg/kg/kg+erastin 20mg/kg/kg/kg+pm2.5)。将小鼠预先治疗AST-IV腹膜内三天。然后,通过非侵入性气管滴注给出PM2.5(7.5mg/kg)以诱导肺损伤。铁毒性激动剂Erastin用于验证AST-IV抗肿瘤的机制。 PM2.5刺激后12H,将小鼠安乐死。支气管肺泡灌洗液(BALF)和血清均为Coll针对氧化应激和细胞因子测定。 Lung tissues were collected for glutathione (GSH), tissue iron content, histology, immunofluorescence, transmission electron microscopy, and western blot analysis.
RESULTS: Ast-IV reduced the lung wet-dry ratio and the levels of interleukin 6 (IL-6), tumor血清中的坏死因子-α(TNF-α)和白介素1β(IL-1β)。 AST-IV还可以改善BALF中的氧化应激水平,恢复肺组织中的GSH水平,并减少肺组织中的铁含量。 Western Blot结果表明,AST-IV通过NRF2/SLC7A11/GPX4轴调节了螺旋病信号通路,以保护PM2.5介导的肺损伤。
sub_abstract _label“>结论: span> pm - pm - rung of Ast-aST aST aST aST aST aST-aST aST-iv a ast-iv a ast aSt aST效应效应。为了抑制肺组织的铁凋亡。抗肿瘤可能是AST-IV的新机制在PM2.5引起的肺损伤上。