The findings indicated that (1) Lipin3 was obviously increased in AKI patients, as well as cisplatin induced mice and cells; (2) Lipin3-null mice presented with more severe AKI symptoms compared to WT mice after cisplatin treatment; (3) Lipin3 played crucial role in regulating cell death and mitochondrial function after cisplatin treatment; (4) In terms of mechanism, Lipin3 regulated these phenotypes through its interaction with Sirt1, which activated the p21-Caspase 3-GSDME pathway. This evidence concerns the gene SIRT1 and acute kidney injury.