银杏内酯 B 可与 GPX4 和 FSP1 结合，缓解大鼠脑缺血再灌注损伤。

IF 3.3 3区医学 Q2 PHARMACOLOGY & PHARMACY

Toxicology and applied pharmacology Pub Date : 2025-02-01 DOI:10.1016/j.taap.2025.117237

Rong Zou , Zhaoxia Liu , Peng Wang , Ying Liu

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Ginkgolide B binds to GPX4 and FSP1 to alleviate cerebral ischemia/reperfusion injury in rats

Ischemia/reperfusion (I/R) injury can increase the anomalous permeability of the blood-brain barrier and the risk of hemorrhagic conversion. Ginkgolide B (Gin B) has been recognized for its neuroprotective properties in stroke treatment. This study aimed to analyze the association of Gin B with GPX4 and FSP1 in cerebral I/R injury treatment. HT22 cells were induced by oxygen-glucose deprivation/reoxygenation (OGD/R) and treated with a series of Gin B (10, 20, 40 μM) for 24 h. It found that the Gin B treatment declined the OGD/R-induced cellular ROS and lipid ROS with increasing concentrations. Moreover, the Gin B treatment improved the OGD/R-induced ferroptotic cell death by activating the GPX4-GSH and FSP1-CoQ10-NADH pathways with increasing concentrations. Molecular docking showed there is a good binding activity of Gin B to GPX4 (score = −6.4 kcal/mol) and FSP1 (score = −6.7 kcal/mol), and the microscale thermophoresis (MST) assay confirmed that Gin B can directly bind to GPX4 and FSP1. In vivo, rats were induced by middle cerebral artery occlusion (MCAO)/R and treated with 20 mg/kg of Gin B to analyze its effects on the GPX4-GSH and FSP1-CoQ10-NADH pathways. The GPX4 inhibitor (RSL3) and the FSP1 inhibitor (iFSP1) were used to confirm the mechanism of Gin B in the MCAO/R-treated rats. It showed that the Gin B treatment alleviated the MACO/R-induced brain injury by activating the GPX4-GSH and FSP1-CoQ10-NADH pathways. This study showed that Gin B improved cerebral I/R-induced ferroptotic cell death by activating the GPX4-GSH and FSP1-CoQ10-NADH pathways, providing a new mechanism of Gin B for cerebral I/R treatment.

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来源期刊

Toxicology and applied pharmacology 医学-毒理学

CiteScore

6.80

自引率

2.60%

发文量

309

审稿时长

32 days

期刊介绍： Toxicology and Applied Pharmacology publishes original scientific research of relevance to animals or humans pertaining to the action of chemicals, drugs, or chemically-defined natural products. Regular articles address mechanistic approaches to physiological, pharmacologic, biochemical, cellular, or molecular understanding of toxicologic/pathologic lesions and to methods used to describe these responses. Safety Science articles address outstanding state-of-the-art preclinical and human translational characterization of drug and chemical safety employing cutting-edge science. Highly significant Regulatory Safety Science articles will also be considered in this category. Papers concerned with alternatives to the use of experimental animals are encouraged. Short articles report on high impact studies of broad interest to readers of TAAP that would benefit from rapid publication. These articles should contain no more than a combined total of four figures and tables. Authors should include in their cover letter the justification for consideration of their manuscript as a short article.