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A renal YY1-KIM1-DR5 axis regulates the progression of acute kidney injury
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A renal YY1-KIM1-DR5 axis regulates the progression of acute kidney injury
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Journal Article
A renal YY1-KIM1-DR5 axis regulates the progression of acute kidney injury
2023
Overview
Acute kidney injury (AKI) exhibits high morbidity and mortality. Kidney injury molecule-1 (KIM1) is dramatically upregulated in renal tubules upon injury, and acts as a biomarker for various renal diseases. However, the exact role and underlying mechanism of KIM1 in the progression of AKI remain elusive. Herein, we report that renal tubular specific knockout of
Kim1
attenuates cisplatin- or ischemia/reperfusion-induced AKI in male mice. Mechanistically, transcription factor Yin Yang 1 (YY1), which is downregulated upon AKI, binds to the promoter of
KIM1
and represses its expression. Injury-induced KIM1 binds to the ECD domain of death receptor 5 (DR5), which activates DR5 and the following caspase cascade by promoting its multimerization, thus induces renal cell apoptosis and exacerbates AKI. Blocking the KIM1-DR5 interaction with rationally designed peptides exhibit reno-protective effects against AKI. Here, we reveal a YY1-KIM1-DR5 axis in the progression of AKI, which warrants future exploration as therapeutic targets.
KIM1 is dramatically upregulated in acute kidney injury (AKI) and but how KIM1 affects AKI remains unknown. Here, the authors report that renal specific Kim1 knockout relieves AKI, unveil a YY1-KIM1-DR5 axis in the progression of AKI, and suggest potential therapeutic strategies against AKI.
