PMID- 37142684 OWN - NLM STAT- MEDLINE DCOM- 20230831 LR - 20230922 IS - 1745-7254 (Electronic) IS - 1671-4083 (Print) IS - 1671-4083 (Linking) VI - 44 IP - 9 DP - 2023 Sep TI - Bergapten inhibits NLRP3 inflammasome activation and pyroptosis via promoting mitophagy. PG - 1867-1878 LID - 10.1038/s41401-023-01094-7 [doi] AB - Inhibition of NLRP3 inflammasome activation produces potent therapeutic effects in a wide array of inflammatory diseases. Bergapten (BeG), a furocoumarin phytohormone present in many herbal medicines and fruits, exibits anti-inflammatory activity. In this study we characterized the therapeutic potential of BeG against bacterial infection and inflammation-related disorders, and elucidated the underlying mechanisms. We showed that pre-treatment with BeG (20 muM) effectively inhibited NLRP3 inflammasome activation in both lipopolysaccharides (LPS)-primed J774A.1 cells and bone marrow-derived macrophages (BMDMs), evidenced by attenuated cleaved caspase-1 and mature IL-1beta release, as well as reduced ASC speck formation and subsequent gasdermin D (GSDMD)-mediated pyroptosis. Transcriptome analysis revealed that BeG regulated the expression of genes involved in mitochondrial and reactive oxygen species (ROS) metabolism in BMDMs. Moreover, BeG treatment reversed the diminished mitochondrial activity and ROS production after NLRP3 activation, and elevated the expression of LC3-II and enhanced the co-localization of LC3 with mitochondria. Treatment with 3-methyladenine (3-MA, 5 mM) reversed the inhibitory effects of BeG on IL-1beta, cleaved caspase-1 and LDH release, GSDMD-N formation as well as ROS production. In mouse model of Escherichia coli-induced sepsis and mouse model of Citrobacter rodentium-induced intestinal inflammation, pre-treatment with BeG (50 mg/kg) significantly ameliorated tissue inflammation and injury. In conclusion, BeG inhibits NLRP3 inflammasome activation and pyroptosis by promoting mitophagy and maintaining mitochondrial homeostasis. These results suggest BeG as a promising drug candidate for the treatment of bacterial infection and inflammation-related disorders. CI - (c) 2023. The Author(s), under exclusive licence to Shanghai Institute of Materia Medica, Chinese Academy of Sciences and Chinese Pharmacological Society. FAU - Luo, Tong AU - Luo T AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Jia, Xin AU - Jia X AD - School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Feng, Wan-di AU - Feng WD AD - Beijing Academy of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Wang, Jin-Yong AU - Wang JY AD - School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Xie, Fang AU - Xie F AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Kong, Ling-Dong AU - Kong LD AD - School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Wang, Xue-Jiao AU - Wang XJ AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Lian, Rui AU - Lian R AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Liu, Xia AU - Liu X AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Chu, Ying-Jie AU - Chu YJ AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Wang, Yao AU - Wang Y AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. yaowang@bucm.edu.cn. FAU - Xu, An-Long AU - Xu AL AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. xuanlong@bucm.edu.cn. LA - eng PT - Journal Article DEP - 20230504 PL - United States TA - Acta Pharmacol Sin JT - Acta pharmacologica Sinica JID - 100956087 RN - 0 (Inflammasomes) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (Reactive Oxygen Species) RN - 4FVK84C92X (5-Methoxypsoralen) RN - EC 3.4.22.36 (Caspase 1) RN - 0 (Interleukin-1beta) SB - IM MH - Mice MH - Animals MH - *Inflammasomes/metabolism MH - *NLR Family, Pyrin Domain-Containing 3 Protein/metabolism MH - Pyroptosis MH - Reactive Oxygen Species/metabolism MH - 5-Methoxypsoralen/pharmacology MH - Mitophagy MH - Inflammation/drug therapy/metabolism MH - Caspase 1/metabolism MH - Interleukin-1beta/metabolism PMC - PMC10462717 OTO - NOTNLM OT - NLRP3 inflammasome OT - bergapten OT - intestinal inflammation OT - mitophagy OT - pyroptosis OT - sepsis COIS- The authors declare no competing interests. EDAT- 2023/05/05 00:42 MHDA- 2023/08/31 06:41 PMCR- 2024/09/01 CRDT- 2023/05/04 23:22 PHST- 2022/12/12 00:00 [received] PHST- 2023/04/17 00:00 [accepted] PHST- 2024/09/01 00:00 [pmc-release] PHST- 2023/08/31 06:41 [medline] PHST- 2023/05/05 00:42 [pubmed] PHST- 2023/05/04 23:22 [entrez] AID - 10.1038/s41401-023-01094-7 [pii] AID - 1094 [pii] AID - 10.1038/s41401-023-01094-7 [doi] PST - ppublish SO - Acta Pharmacol Sin. 2023 Sep;44(9):1867-1878. doi: 10.1038/s41401-023-01094-7. Epub 2023 May 4.