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Oxidative Medicine and Cellular Longevity

Oxidative Medicine and Cellular Longevity

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Regulation of ACSL4-Catalyzed Lipid Peroxidation Process Resists Cisplatin Ototoxicity

Published:20 March 2022 DOI: 10.1155/2022/3080263
Feinan He,?Xiao-Xin Huang,?Guokun Wei,?Xiaorong Lin,?Weijian Zhang,?Zhuang Wei,?Wuhui He,?Ting Zhan,?Hai Hu,?Haidi Yang

Abstract

Cisplatin-induced ototoxicity is one of the common side effects during its treatment and there are no effective measures to prevent it. Our study aimed to investigate the effect of ACSL4-catalyzed lipid peroxidation on cisplatin-induced hearing loss and its possible protective mechanisms. We used a variety of cisplatin ototoxicity models, including HEI-OC1 cell line, cochlear explants, and ET4 GFP+ zebrafish. After measuring the experimental concentrations of cisplatin by CCK8 assay and immunofluorescence, respectively, we examined the levels of lipid peroxidation by MDA content, 4-HNE content, and C11-BODIPY (581/591) probe. Then, we used two ferroptosis inhibitors, FER-1, and Vit-E to protect hair cells. We found that cisplatin significantly increased the levels of lipid peroxidation and that this process can be resisted by the ferroptosis inhibitors. Afterwards, we performed metabolomic assays on the cisplatin-treated hair cells. The metabolite levels were significantly altered in the experimental group compared to the control group, and the highest degree of change was observed in the glutathione metabolic pathway and the arachidonic acid metabolic pathway. Therefore, we screened the key enzymes on the arachidonic acid metabolic pathway in the hair cells after cisplatin treatment and found that ACSL4 had the greatest regulatory value. Further, we reduced the level of lipid peroxide in hair cells by specifically inhibiting the expression of ACSL4, which protected hair cells from cisplatin damage at source. In conclusion, the lipid peroxidation process regulated by ACSL4 may be an important factor contributing to the sensitivity of hair cells to cisplatin. Inhibition of ACSL4 expression may be an effective preventive measure against cisplatin ototoxicity.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Vitamin E 59-02-9 C29H50O2 590 suppliers $5.00-$2055.90
Vitamin E 59-02-9 C29H50O2 590 suppliers $5.00-$2055.90
Vitamin E 59-02-9 C29H50O2 590 suppliers $5.00-$2055.90
Vitamin E 59-02-9 C29H50O2 590 suppliers $5.00-$2055.90

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