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Scutellarein alleviates chronic obstructive pulmonary disease through inhibition of ferroptosis by chelating iron and interacting with arachidonate 15-lipoxygenase
Liu,Lu1,2; Zhang,Yunsen3; Wang,Lun4; Liu,Yue5; Chen,Hongqing1; Hu,Qiongying1; Xie,Chunguang1; Meng,Xianli2; Shen,Xiaofei1
2023
Source PublicationPhytotherapy Research
ISSN0951-418X
Abstract

Ferroptosis, an iron-dependent cell death characterized by lethal lipid peroxidation, is involved in chronic obstructive pulmonary disease (COPD) pathogenesis. Therefore, ferroptosis inhibition represents an attractive strategy for COPD therapy. Herein, we identified natural flavonoid scutellarein as a potent ferroptosis inhibitor for the first time, and characterized its underlying mechanisms for inhibition of ferroptosis and COPD. In vitro, the anti-ferroptotic activity of scutellarein was investigated through CCK8, real-time quantitative polymerase chain reaction (RT-qPCR), Western blotting, flow cytometry, and transmission electron microscope (TEM). In vivo, COPD was induced by lipopolysaccharide (LPS)/cigarette smoke (CS) and assessed by changes in histopathological, inflammatory, and ferroptotic markers. The mechanisms were investigated by RNA-sequencing (RNA-seq), electrospray ionization mass spectra (ESI-MS), local surface plasmon resonance (LSPR), drug affinity responsive target stability (DARTS), cellular thermal shift assay (CETSA), and molecular dynamics. Our results showed that scutellarein significantly inhibited Ras-selective lethal small molecule (RSL)-3-induced ferroptosis and mitochondria injury in BEAS-2B cells, and ameliorated LPS/CS-induced COPD in mice. Furthermore, scutellarein also repressed RSL-3- or LPS/CS-induced lipid peroxidation, GPX4 down-regulation, and overactivation of Nrf2/HO-1 and JNK/p38 pathways. Mechanistically, scutellarein inhibited RSL-3- or LPS/CS-induced Fe elevation through directly chelating Fe. Moreover, scutellarein bound to the lipid peroxidizing enzyme arachidonate 15-lipoxygenase (ALOX15), which resulted in an unstable state of the catalysis-related Fe chelating cluster. Additionally, ALOX15 overexpression partially abolished scutellarein-mediated anti-ferroptotic activity. Our findings revealed that scutellarein alleviated COPD by inhibiting ferroptosis via directly chelating Fe and interacting with ALOX15, and also highlighted scutellarein as a candidate for the treatment of COPD and other ferroptosis-related diseases.

KeywordAlox15 Chronic Obstructive Pulmonary Disease Ferroptosis Ho-1 Iron Chelation Scutellarein
DOI10.1002/ptr.7928
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaPharmacology & Pharmacy
WOS SubjectChemistry, Medicinal ; Pharmacology & Pharmacy
WOS IDWOS:001014716200001
PublisherJohn Wiley and Sons Inc
Scopus ID2-s2.0-85162917319
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorShen,Xiaofei
Affiliation1.TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province,Hospital of Chengdu University of Traditional Chinese Medicine,Chengdu University of Traditional Chinese Medicine,Chengdu,China
2.College of Pharmacy,Chengdu University of Traditional Chinese Medicine,Chengdu,China
3.State Key Laboratory of Quality Research in Chinese Medicine,Institute of Chinese Medical Sciences (ICMS),University of Macau,Macao
4.Natural Products Research Center,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu,China
5.College of Ethnic Medicine,Chengdu University of Traditional Chinese Medicine,Chengdu,China
Recommended Citation
GB/T 7714
Liu,Lu,Zhang,Yunsen,Wang,Lun,et al. Scutellarein alleviates chronic obstructive pulmonary disease through inhibition of ferroptosis by chelating iron and interacting with arachidonate 15-lipoxygenase[J]. Phytotherapy Research, 2023.
APA Liu,Lu., Zhang,Yunsen., Wang,Lun., Liu,Yue., Chen,Hongqing., Hu,Qiongying., Xie,Chunguang., Meng,Xianli., & Shen,Xiaofei (2023). Scutellarein alleviates chronic obstructive pulmonary disease through inhibition of ferroptosis by chelating iron and interacting with arachidonate 15-lipoxygenase. Phytotherapy Research.
MLA Liu,Lu,et al."Scutellarein alleviates chronic obstructive pulmonary disease through inhibition of ferroptosis by chelating iron and interacting with arachidonate 15-lipoxygenase".Phytotherapy Research (2023).
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