Title:Ginsenoside Rg1 Suppresses Ferroptosis of Renal Tubular Epithelial
Cells in Sepsis-induced Acute Kidney Injury via the FSP1-CoQ10-
NAD(P)H Pathway
Volume: 31
Issue: 15
Author(s): Jun Guo*, Long Chen and Min Ma
Affiliation:
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine,
School of Medicine, Zhongda Hospital, Southeast University, No. 87, Dingjiaqiao Road, Gulou District,
Nanjing, 210009, Jiangsu Province, China
- Department of Critical Care Medicine, Union Jiangbei Hospital,
Huazhong University of Science and Technology, No. 111, Success Road, Caidian District, Wuhan,
430100, Hubei Province, China
Keywords:
Sepsis, acute kidney injury, ginsenoside Rg1, ferroptosis FSP1-CoQ10-NAD(P)H pathway, HK-2 cells, lipopolysaccharide, 4-HNE.
Abstract:
Introduction: Sepsis-induced acute kidney injury is related to an increased
mortality rate by modulating ferroptosis through ginsenoside Rg1. In this study, we explored
the specific mechanism of it.
Methods: Human renal tubular epithelial cells (HK-2) were transfected with oe-ferroptosis
suppressor protein 1 and treated with lipopolysaccharide for ferroptosis induction, and
they were then treated with ginsenoside Rg1 and ferroptosis suppressor protein 1 inhibitor.
Ferroptosis suppressor protein 1, CoQ10, CoQ10H2, and intracellular NADH levels in
HK-2 cells were assessed by Western blot, ELISA kit, and NAD/NADH kit.
NAD+/NADH ratio was also calculated, and 4-Hydroxynonal fluorescence intensity was
assessed by immunofluorescence. HK-2 cell viability and death were assessed by CCK-8
and propidium iodide staining. Ferroptosis, lipid peroxidation, and reactive oxygen species
accumulation were assessed by Western blot, kits, flow cytometry, and C11
BODIPY 581/591 molecular probe. Sepsis rat models were established by cecal ligation
and perforation to investigate whether ginsenoside Rg1 regulated the ferroptosis suppressor
protein 1-CoQ10-NAD(P)H pathway in vivo.
Results: LPS treatment diminished ferroptosis suppressor protein 1, CoQ10, CoQ10H2,
and NADH contents in HK-2 cells, while facilitating NAD+/NADH ratio and relative 4-
Hydroxynonal fluorescence intensity. FSP1 overexpression inhibited lipopolysaccharideinduced
lipid peroxidation in HK-2 cells via the ferroptosis suppressor protein 1-CoQ10-
NAD(P)H pathway. The ferroptosis suppressor protein 1-CoQ10-NAD(P)H pathway suppressed
lipopolysaccharide-induced ferroptosis in HK-2 cells. Ginsenoside Rg1 alleviated
ferroptosis in HK-2 cells by regulating the ferroptosis suppressor protein 1-CoQ10-
NAD(P)H pathway. Moreover, ginsenoside Rg1 regulated the ferroptosis suppressor protein
1-CoQ10-NAD(P)H pathway in vivo.
Conclusion: Ginsenoside Rg1 alleviated sepsis-induced acute kidney injury by blocking
renal tubular epithelial cell ferroptosis via the ferroptosis suppressor protein 1-CoQ10-
NAD(P)H pathway.