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- Title
Interferon-α stimulates DExH-box helicase 58 to prevent hepatocyte ferroptosis.
- Authors
Jia, Kai-Wei; Yao, Ren-Qi; Fan, Yi-Wen; Zhang, Ding-Ji; Zhou, Ye; Wang, Min-Jun; Zhang, Li-Yuan; Dong, Yue; Li, Zhi-Xuan; Wang, Su-Yuan; Wang, Mu; Li, Yun-Hui; Zhang, Lu-Xin; Lei, Ting; Gui, Liang-Chen; Lu, Shan; Yang, Ying-Yun; Wang, Si-Xian; Yu, Yi-Zhi; Yao, Yong-Ming
- Abstract
Background: Liver ischemia/reperfusion (I/R) injury is usually caused by hepatic inflow occlusion during liver surgery, and is frequently observed during war wounds and trauma. Hepatocyte ferroptosis plays a critical role in liver I/R injury, however, it remains unclear whether this process is controlled or regulated by members of the DEAD/DExH-box helicase (DDX/DHX) family. Methods: The expression of DDX/DHX family members during liver I/R injury was screened using transcriptome analysis. Hepatocyte-specific Dhx58 knockout mice were constructed, and a partial liver I/R operation was performed. Single-cell RNA sequencing (scRNA-seq) in the liver post I/R suggested enhanced ferroptosis by Dhx58hep−/−. The mRNAs and proteins associated with DExH-box helicase 58 (DHX58) were screened using RNA immunoprecipitation-sequencing (RIP-seq) and IP-mass spectrometry (IP-MS). Results: Excessive production of reactive oxygen species (ROS) decreased the expression of the IFN-stimulated gene Dhx58 in hepatocytes and promoted hepatic ferroptosis, while treatment using IFN-α increased DHX58 expression and prevented ferroptosis during liver I/R injury. Mechanistically, DHX58 with RNA-binding activity constitutively associates with the mRNA of glutathione peroxidase 4 (GPX4), a central ferroptosis suppressor, and recruits the m6A reader YT521-B homology domain containing 2 (YTHDC2) to promote the translation of Gpx4 mRNA in an m6A-dependent manner, thus enhancing GPX4 protein levels and preventing hepatic ferroptosis. Conclusions: This study provides mechanistic evidence that IFN-α stimulates DHX58 to promote the translation of m6A-modified Gpx4 mRNA, suggesting the potential clinical application of IFN-α in the prevention of hepatic ferroptosis during liver I/R injury.
- Subjects
LIVER surgery; GENE expression; WAR wounds; GLUTATHIONE peroxidase; WAR trauma; REACTIVE oxygen species
- Publication
Military Medical Research, 2024, Vol 11, p1
- ISSN
2095-7467
- Publication type
Article
- DOI
10.1186/s40779-024-00524-9