PMID- 37641705 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230829 IS - 1178-7031 (Print) IS - 1178-7031 (Electronic) IS - 1178-7031 (Linking) VI - 16 DP - 2023 TI - Esculetin Alleviates Inflammation, Oxidative Stress and Apoptosis in Intestinal Ischemia/Reperfusion Injury via Targeting SIRT3/AMPK/mTOR Signaling and Regulating Autophagy. PG - 3655-3667 LID - 10.2147/JIR.S413941 [doi] AB - AIM: Intestinal ischemia/reperfusion (I/R) injury is a challenging pathological phenomenon accountable for significant mortality in clinical scenarios. Substantial evidence has supported the protective role of esculetin in myocardial I/R injury. This study is designed to reveal the specific impacts of esculetin on intestinal I/R injury and disclose the underlying mechanism. METHODS: First, intestinal I/R injury model and intestinal epithelial cell line hypoxia/reoxygenation (H/R) model were established. Pathologic damages to intestinal tissues were observed through H&E staining. Serum diamine oxidase (DAO) levels were examined. RT-qPCR and Western blot examined the expression of inflammatory mediators. Commercial kits were used for detecting the levels of oxidative stress markers. TUNEL assay and caspase 3 activity assay measured cell apoptosis. Immunofluorescence (IF) staining measured autophagy levels. Western blot analyzed the expression of apoptosis-, Sirtuin 3 (SIRT3)/AMP activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) signaling- and autophagy-related proteins. Molecular docking verified the interaction of esculetin with SIRT3. Cell viability was explored via CCK-8 assay. RESULTS: The experimental results revealed that esculetin treatment mitigated pathological damage of intestinal tissues, reduced serum DAO level, ameliorated inflammation, oxidative stress and apoptosis and promoted autophagy in intestinal I/R rats. Moreover, esculetin bond to SIRT3 and activated SIRT3/AMPK/mTOR signaling both in vitro and in vivo. Furthermore, esculetin treatment enhanced cell viability and SIRT3 silencing reversed the impacts of esculetin on autophagy, inflammation, oxidative stress and apoptosis in H/R cell model. CONCLUSION: In a word, esculetin activated SIRT3/AMPK/mTOR signaling and autophagy to protect against inflammation, oxidative stress and apoptosis in intestinal I/R injury. CI - (c) 2023 Shen et al. FAU - Shen, Xin AU - Shen X AD - Department of Gastrointestinal Surgery, Xi'an Daxing Hospital, Xi'an, 710016, People's Republic of China. FAU - Shi, Hai AU - Shi H AD - Department of Gastrointestinal Surgery, Xi'an Daxing Hospital, Xi'an, 710016, People's Republic of China. FAU - Chen, Xinli AU - Chen X AD - Department of Gastrointestinal Surgery, Xi'an Daxing Hospital, Xi'an, 710016, People's Republic of China. FAU - Han, Junwei AU - Han J AD - Department of Gastrointestinal Surgery, Xi'an Daxing Hospital, Xi'an, 710016, People's Republic of China. FAU - Liu, Haiwang AU - Liu H AD - Department of Gastrointestinal Surgery, Xi'an Daxing Hospital, Xi'an, 710016, People's Republic of China. FAU - Yang, Jie AU - Yang J AD - Department of Gastrointestinal Surgery, Xi'an Daxing Hospital, Xi'an, 710016, People's Republic of China. FAU - Shi, Yuan AU - Shi Y AD - Department of Gynecology and Obstetrics, Xijing Hospital, Air Force Military Medical University, Xi'an, 710032, People's Republic of China. FAU - Ma, Jiajia AU - Ma J AD - Department of Gynecology and Obstetrics, Xijing Hospital, Air Force Military Medical University, Xi'an, 710032, People's Republic of China. LA - eng PT - Journal Article DEP - 20230823 PL - New Zealand TA - J Inflamm Res JT - Journal of inflammation research JID - 101512684 PMC - PMC10460583 OTO - NOTNLM OT - SIRT3/AMPK/mTOR signaling OT - autophagy OT - esculetin OT - intestinal I/R injury COIS- The authors declare that there are no conflicts of interest in this work. EDAT- 2023/08/29 06:42 MHDA- 2023/08/29 06:43 PMCR- 2023/08/23 CRDT- 2023/08/29 03:38 PHST- 2023/03/23 00:00 [received] PHST- 2023/07/06 00:00 [accepted] PHST- 2023/08/29 06:43 [medline] PHST- 2023/08/29 06:42 [pubmed] PHST- 2023/08/29 03:38 [entrez] PHST- 2023/08/23 00:00 [pmc-release] AID - 413941 [pii] AID - 10.2147/JIR.S413941 [doi] PST - epublish SO - J Inflamm Res. 2023 Aug 23;16:3655-3667. doi: 10.2147/JIR.S413941. eCollection 2023.