2. Academic Validation
  3. ACSL4 deficiency confers protection against ferroptosis-mediated acute kidney injury

ACSL4 deficiency confers protection against ferroptosis-mediated acute kidney injury

  • Redox Biol. 2022 May;51:102262. doi: 10.1016/j.redox.2022.102262.
Yue Wang 1,  Menghan Zhang 2,  Ran Bi 3,  Yali Su 3,  Fei Quan 3,  Yanting Lin 3,  Chongxiu Yue 3,  Xinmeng Cui 3,  Qixiang Zhao 3,  Siliang Liu 3,  Yong Yang 3,  Dayong Zhang 4,  Qiuhua Cao 5,  Xinghua Gao 6
Affiliations

Affiliations

  • 1 Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu, 211198, PR China; Department of Endocrinology, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
  • 2 Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu, 211198, PR China; Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-7568, USA.
  • 3 Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu, 211198, PR China.
  • 4 School of Sciences, China Pharmaceutical University, Nanjing, 211198, China.
  • 5 Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu, 211198, PR China. Electronic address: [email protected].
  • 6 Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu, 211198, PR China. Electronic address: [email protected].
PMID: 35180475 DOI: 10.1016/j.redox.2022.102262
Abstract

The term Ferroptosis coined in 2012 causes acute kidney injury (AKI). However, its pathway mechanism in AKI is poorly understood. In this study, we conducted an RNA-sequence analysis of kidneys in AKI and normal mice to explore the pathway mechanism of Ferroptosis. Consequently, differentially expressed genes highlighted Acyl-CoA synthetase long-chain family (ACSL4), a known promotor for Ferroptosis. Besides, RT-PCR, Western blot, and immunohistochemical analyses confirmed its upregulation. HIF-1α was downregulated in I/R-AKI mice, and in vitro studies confirmed a negative regulation of HIF-1α on ACSL4. To explore the role of ACSL4 in AKI, we constructed ACSL4 knockout in kidney tubules of mice-as Cdh16Cre-ACSL4F/F mice. Results revealed that ACSL4 knockout significantly reduced Ferroptosis and inhibited the functional and pathological injury of AKI mice. Meanwhile, the kidneys of Cdh16Cre-ACSL4F/F mice demonstrated a significantly decreased inflammation and macrophage infiltration. Further, additional explorations were explored to decipher a more thorough understanding of ferroptotic immunogenicity. As a result, neutrophils were not directly recruited by ferroptotic cells, but by ferroptotic cell-induced macrophages. Further, ACSL4 inhibitor rosiglitazone significantly inhibited AKI. Collectively, these data provide novel insights into the AKI pathogenesis, and defined ACSL4 as an effective target in AKI.

Keywords

ACSL4; Acute kidney injury; Ferroptosis; HIF-1α; Macrophages.

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