Inhibition of ferroptosis alleviates acute kidney injury caused by diquat in zebrafish.
10.12122/j.issn.1673-4254.2025.08.18
- Author:
Zejin OU
1
;
Ying LI
2
;
Shi CHEN
2
;
Ziyi WANG
3
;
Meiyi HE
3
;
Zhicheng CHEN
2
;
Shihao TANG
1
;
Xiaojing MENG
2
;
Zhi WANG
1
Author Information
1. Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China.
2. School of Public Health, Southern Medical University, Guangzhou 510515, China.
3. School of Public Health, North Sichuan Medical College, Nanchong 637100, China.
- Publication Type:Journal Article
- Keywords:
acute kidney injury;
diquat;
ferroptosis;
mitochondrial ferritin;
voltage-dependent anion-selective channel protein 1
- MeSH:
Animals;
Zebrafish;
Ferroptosis/drug effects*;
Acute Kidney Injury/chemically induced*;
Diquat/toxicity*;
Animals, Genetically Modified;
Voltage-Dependent Anion Channel 1/metabolism*;
Ferritins/metabolism*;
Oxidative Stress
- From:
Journal of Southern Medical University
2025;45(8):1743-1750
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVES:To investigate the role of ferroptosis in diquat-induced acute kidney injury (AKI) and its molecular mechanisms.
METHODS:Transgenic zebrafish models with Tg (Eco.Tshb:EGFP) labeling of the renal tubules and Tg (lyz:dsRed2) labeling of the neutrophils were both divided into control group, gentamicin (positive control) group, diquat poisoning group, ferroptosis inhibitor group. The indicators of kidney injury, inflammatory response, and ferroptosis were examined in the zebrafish, and the changes in expressions of voltage-dependent anion-selective channel protein 1 (VDAC1) and mitochondrial ferritin (FTMT) were detected using Western blotting.
RESULTS:AKI induced by diquat exhibited a significant dose-effect relationship, and the severity of injury was proportional to the exposure concentration. Diquat also caused marked oxidative stress and inflammatory responses in the zebrafish models. Rhodamine metabolism assay and HE staining revealed significantly declined glomerular filtration function of the zebrafish as diquat exposure concentration increased. Immunofluorescence staining highlighted significant changes in the expressions of ferroptosis markers GPX4 and FTH1 in zebrafish renal tissues following diquat exposure. In diquat-exposed zebrafish, treatment with ferrostatin-1, a ferroptosis inhibitor, obviously upregulated GPX4 and downregulated FTH1 expressions and improved the metabolic rate of glucan labeled with rhodamine B. Diquat exposure significantly upregulated the expression of VDAC1 and FTMT in zebrafish, and the application of ferrostatin-1 and VBIT-12 (a VDAC1 inhibitor) both caused pronounced downregulation of FTMT expression.
CONCLUSIONS:Ferroptosis is a critical mechanism underlying diquat-induced AKI, in which VDAC1 and FTMT play important regulatory roles, suggesting their potential as therapeutic target for AKI caused by diquat.
