Abstract
The ubiquitin-specific protease 14 (USP14) is a deubiquitinating enzyme, its inhibitor was reported could alleviate the ischemia/reperfusion (I/R)-stimulated cerebral neuronal damage. However, its specific role in I/R-induced acute kidney injury (AKI) remains unclear. We established hypoxia/reoxygenation (H/R)-induced HK-2 cell injury model in vitro and I/R-induced kidney injury mice model in vivo. The expression or activity of USP14 was inhibited by siRNA or IU1, a small molecule inhibitor of USP14. ROS were scavenged by N-acetyl-cysteine (NAC). Biochemical index analysis and hematoxylin & eosin (H&E) staining were performed to evaluate renal injury. The results indicated that USP14 was upregulated in H/R-induced HK-2 cells and kidney tissues of I/R mice. Inhibition of USP14 suppressed the cell death, inflammatory, oxidative stress and reactive oxygen species (ROS)-dependent ferroptosis of H/R-induced HK-2 cells. What’s more, IU1 and NAC effectively alleviated renal injury of I/R mice. In summary, this study suggested that inhibition of USP14 protected renal from I/R injury.
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Data availability
The data in the present study are available from the corresponding author on reasonable request.
Abbreviations
- AKI:
-
acute kidney injury
- I/R:
-
ischemia/reperfusion
- H/R:
-
hypoxia/reoxygenation
- USP14:
-
ubiquitin-specific protease 14
- NAC:
-
N-acetyl-cysteine
- ROS:
-
reactive oxygen species
- GSH-Px:
-
glutathione peroxidase
- LDH:
-
lactate dehydrogenase
- SOD:
-
superoxide dismutase
- COX2:
-
cyclooxygenase-2
- NOX1:
-
NADPH oxidase 1,
- ACSL4:
-
Acyl-CoA Synthetase Long Chain Family Member 4
- GPX4:
-
glutathione peroxidase 4
- FTH1:
-
ferritin heavy chain 1
- BUN:
-
blood urea nitrogen
- Scr:
-
serum creatinine
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Author contributions
W.L. and J.P. designed and performed most of the experiments, analyzed all data, prepared figures and wrote the manuscript; J.Z. and L.F. performed part of the experiments; XL.X. and ZT.H. contributed to experimental design, data interpretation, and writing the paper. All authors read and approved the final manuscript.
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The present study was approved by the Ethics Committee of the Ninth hospital of xi’an.
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Pan, J., Zhao, J., Feng, L. et al. Inhibition of USP14 Suppresses ROS-dependent Ferroptosis and Alleviates Renal Ischemia/Reperfusion Injury. Cell Biochem Biophys 81, 87–96 (2023). https://doi.org/10.1007/s12013-022-01107-y
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DOI: https://doi.org/10.1007/s12013-022-01107-y