Abstract
Acetaminophen (APAP) overdose can lead to acute, severe kidney injury, which has recently attracted considerable attention among researchers and clinicians. Unfortunately, there are no well-established treatments for APAP-induced renal injury, and the molecular mechanism of APAP-induced kidney injury is still unclear. Herein, we explored the protective effects of interleukin (IL)-22 on APAP-induced renal injury and the underlying molecular basis. We found that IL-22 could significantly alleviate the accumulation of reactive oxygen species (ROS) and ameliorate mitochondrial dysfunction, reducing APAP-induced renal tubular epithelial cell (TEC) death in vitro and in vivo. Furthermore, IL-22 could downregulate the APAP-induced NLRP3 inflammasome activation and mature IL-1β release in kidney injury. Additionally, the APAP-mediated upregulation of the serum levels of IL-18, TNF-α, IL-6, and IL-1β was obviously decreased, suggesting IL-22 has inhibitory effects on inflammatory responses. Conclusively, our study demonstrated that IL-22 exerted ameliorative effects on APAP-induced kidney injury by alleviating mitochondrial dysfunction and NLRP3 inflammasome activation, suggesting that IL-22 represents a potential therapeutic approach to treat APAP-induced kidney injury.
Key Points
• IL-22 could ameliorate APAP that triggered oxidative stress and mitochondrial dysfunction.
• IL-22 could reduce APAP that caused inflammatory responses.
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Graphical abstract
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Funding
The study was supported by grants from the National Nature Science Foundation of China (31872746), National Nature Science Foundation of China (81773620), and Scientific Research Projects of Shanghai Municipal Commission of Health and Family Planning (201740140).
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**aobin Mei and Dianwen Ju designed the study; Yilan Shen, **n **, Wei Chen, Congrong Gao, Qi Bian, Jiajun Fan, and **gyun Luan carried out experiments; Congrong Gao, Zhiyong Guo, Hongrui Liu, and Zhonglian Cao analysed the data; Yilan Shen and Wei Chen drafted and revised the paper; all authors approved the final version of the manuscript.
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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All animal experiments were conducted with the approval of the Ethics Committee of Fudan University School of Pharmacy.
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Shen, Y., **, X., Chen, W. et al. Interleukin-22 ameliorated acetaminophen-induced kidney injury by inhibiting mitochondrial dysfunction and inflammatory responses. Appl Microbiol Biotechnol 104, 5889–5898 (2020). https://doi.org/10.1007/s00253-020-10638-4
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DOI: https://doi.org/10.1007/s00253-020-10638-4