MCL attenuates atherosclerosis by suppressing macrophage ferroptosis via targeting KEAP1/NRF2 interaction
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Le résumé fourni par la source
Micheliolide (MCL), also known as ACT001, which is the active metabolite of parthenolide, has demonstrated promising clinical application potential. However, the effects and underlying mechanisms of MCL on atherosclerosis are still unclear. ApoE−/− mice were fed with high fat diet, with or without MCL oral administration, then the plaque area, lipid deposition and collagen content were determined. In vitro, MCL was used to pretreat macrophages combined by ox-LDL, the levels of ferroptosis related proteins, NRF2 activation, mitochondrial function and oxidative stress were detected. MCL administration significantly attenuated atherosclerotic plaque progress, which characteristics with decreased plaque area, less lipid deposition and increased collagen. Compared with HD group, the level of GPX4 and xCT in atherosclerotic root macrophages were increased in MCL group obviously. In vitro experiment demonstrated that MCL increased GPX4 and xCT level, improved mitochondrial function, attenuated oxidative stress and inhibited lipid peroxidation to suppress macrophage ferroptosis induced with ox-LDL. Moreover, MCL inhibited KEAP1/NRF2 complex formation and enhanced NRF2 nucleus translocation, while the protective effect of MCL on macrophage ferroptosis was abolished by NRF2 inhibition. Additionally, molecular docking suggests that MCL may bind to the Arg483 site of KEAP1, which also contributes to KEAP1/NRF2 binding. Furthermore, Transfection Arg483 (KEAP1-R483S) mutant plasmid can abrogate the anti-ferroptosis and anti-oxidative effects of MC in macrophages. KEAP1-R483S mutation also limited the protective effect of MCL on atherosclerosis progress and macrophage ferroptosis in ApoE−/− mice. MCL suppressed atherosclerosis by inhibiting macrophage ferroptosis via activating NRF2 pathway, the related mechanism is through binding to the Arg483 site of KEAP1 competitively.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- MCL attenuates atherosclerosis by suppressing macrophage ferroptosis via targeting KEAP1/NRF2 interaction
- Date Crossref
- 01/02/2024
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Ministry of Education of the People's Republic of China pays non établi dans la noticeOrganisme public
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Harbin Engineering University pays non établi dans la noticeUniversité ou école supérieure
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Harbin Medical University Department of Endocrinology pays non établi dans la noticeUniversité ou école supérieure
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Shanghai Jiao Tong University pays non établi dans la noticeUniversité ou école supérieure
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Renji Hospital pays non établi dans la noticeÉtablissement de santé
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Shanghai Cancer Institute pays non établi dans la noticeStructure de recherche
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State Key Laboratory of Oncogene and Related Genes pays non établi dans la noticeStructure de recherche
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Fourth Affiliated Hospital of Harbin Medical University pays non établi dans la noticeÉtablissement de santé
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National Key Laboratory of Frigid Zone Cardiovascular Diseases Department of Cardiology pays non établi dans la noticeStructure de recherche
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Department of Cardiology pays non établi dans la noticeInstitution
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The Key Laboratory of Myocardial Ischemia pays non établi dans la noticeStructure de recherche
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School of Medicine State Key Laboratory of Systems Medicine for Cancer pays non établi dans la noticeUniversité ou école supérieure
Ministry of Education of the People's Republic of China, Harbin Engineering University et Department of Endocrinology — Harbin Medical University, avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.