{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T03:05:18Z","timestamp":1790305518986,"version":"4.1.0"},"reference-count":37,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2025,6,9]],"date-time":"2025-06-09T00:00:00Z","timestamp":1749427200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["81773857"],"award-info":[{"award-number":["81773857"]}]},{"name":"National Natural Science Foundation of China","award":["82104356"],"award-info":[{"award-number":["82104356"]}]},{"name":"National Natural Science Foundation of China","award":["2025101001"],"award-info":[{"award-number":["2025101001"]}]},{"name":"Fundamental Research Funds for the Central Universities","award":["81773857"],"award-info":[{"award-number":["81773857"]}]},{"name":"Fundamental Research Funds for the Central Universities","award":["82104356"],"award-info":[{"award-number":["82104356"]}]},{"name":"Fundamental Research Funds for the Central Universities","award":["2025101001"],"award-info":[{"award-number":["2025101001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Antioxidants"],"abstract":"<jats:p>Ferroptosis, an iron-dependent form of regulated cell death characterized by lipid peroxidation, plays a crucial role in acetaminophen (APAP)-induced hepatotoxicity. While 4-octyl itaconate (4-OI) demonstrates protective effects against APAP toxicity, its molecular mechanisms remain to be fully elucidated. Through an innovative integration of untargeted metabolomics and pathway analysis, we unveil a novel dual mechanism by which 4-OI prevents APAP-induced ferroptosis. We discovered that 4-OI stabilizes SLC7A11 through OTUB1-mediated deubiquitination, thereby restoring cystine import and glutathione (GSH) synthesis. In addition, 4-OI activates the Nrf2 pathway, orchestrating a comprehensive antioxidant response by upregulating the key proteins involved in both glutathione metabolism and iron homeostasis, including GPX4, FTH1, FTL1, and FPN1. This coordinated action effectively prevents the accumulation of toxic iron and lipid peroxides. Our findings not only elucidate the protective mechanisms of 4-OI but also establish it as a promising therapeutic candidate for ferroptosis-related diseases through its unique ability to simultaneously modulate the SLC7A11-GPX4 antioxidant axis and iron homeostasis.<\/jats:p>","DOI":"10.3390\/antiox14060698","type":"journal-article","created":{"date-parts":[[2025,6,9]],"date-time":"2025-06-09T08:22:34Z","timestamp":1749457354000},"page":"698","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["OTUB1-SLC7A11 Axis Mediates 4-Octyl Itaconate Protection Against Acetaminophen-Induced Ferroptotic Liver Injury"],"prefix":"10.3390","volume":"14","author":[{"given":"Ziyun","family":"Hu","sequence":"first","affiliation":[{"name":"Center for Molecular Metabolism, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuxin","family":"Li","sequence":"additional","affiliation":[{"name":"Center for Molecular Metabolism, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Di","family":"Xu","sequence":"additional","affiliation":[{"name":"Center for Molecular Metabolism, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huihui","family":"Meng","sequence":"additional","affiliation":[{"name":"Center for Molecular Metabolism, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenya","family":"Liu","sequence":"additional","affiliation":[{"name":"Center for Molecular Metabolism, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qian","family":"Xu","sequence":"additional","affiliation":[{"name":"Center for Molecular Metabolism, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benxing","family":"Yao","sequence":"additional","affiliation":[{"name":"Center for Molecular Metabolism, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8935-4969","authenticated-orcid":false,"given":"Junsong","family":"Wang","sequence":"additional","affiliation":[{"name":"Center for Molecular Metabolism, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,6,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1060","DOI":"10.1016\/j.cell.2012.03.042","article-title":"Ferroptosis: An iron-dependent form of nonapoptotic cell death","volume":"149","author":"Dixon","year":"2012","journal-title":"Cell"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"11976","DOI":"10.7150\/thno.50663","article-title":"Novel insights into ferroptosis: Implications for age-related diseases","volume":"10","author":"Zhou","year":"2020","journal-title":"Theranostics"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"e53746","DOI":"10.15252\/embr.202153746","article-title":"Iron supplementation is sufficient to rescue skeletal muscle mass and function in cancer cachexia","volume":"23","author":"Wyart","year":"2022","journal-title":"EMBO Rep."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Vogt, A.S., Arsiwala, T., Mohsen, M., Vogel, M., Manolova, V., and Bachmann, M.F. 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