PMID- 35129872 OWN - NLM STAT- MEDLINE DCOM- 20220419 LR - 20220419 IS - 1099-1573 (Electronic) IS - 0951-418X (Linking) VI - 36 IP - 4 DP - 2022 Apr TI - The alleviative effect of flavonol-type Nrf2 activator rhamnazin from Physalis alkekengi L. var. franchetii (Mast.) Makino on pulmonary disorders. PG - 1692-1707 LID - 10.1002/ptr.7403 [doi] AB - Rhamnazin (RN) is a flavonol isolated from the calyxes and fruits of Physalis alkekengi L. var. franchetii (Mast.) Makino, which has been used for treating pulmonary diseases in traditional Chinese medicine. The nuclear factor erythroid 2-related factor 2 (Nrf2) is a therapeutic target for pulmonary diseases. In the present study, the underlying mechanism and pharmacological effect of RN against pulmonary disorders are investigated. Human lung epithelial Beas-2B cell and RAW 264.7 murine macrophage-based cell models, and a cigarette smoke (CS)-induced pulmonary impairment mice model are adopted for investigation in vitro and in vivo. RN is identified to be an Nrf2 activator, which promotes Nrf2 dissociation from Keap1 via reacting with the Cys151 cysteine residue of Keap1, and suppresses Nrf2 ubiquitination. In addition, RN is able to attenuate toxicant-stimulated oxidative stress and inflammatory response in vitro. Importantly, RN significantly relieves CS-induced oxidative insult and inflammation, and RN-induced inhibition of inflammation is related to inhibition of nuclear transcription factor-kappaB (NF-kappaB) and induction of cell autophagy. In conclusion, our data indicate that RN is an activator of the Nrf2 pathway and evidently alleviates pulmonary disorders via restricting NF-kappaB activation and promoting autophagy. RN is a promising candidate for the therapy of pulmonary disorders. CI - (c) 2022 John Wiley & Sons Ltd. FAU - Wu, Xue-Yi AU - Wu XY AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. FAU - Wang, Tian AU - Wang T AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. FAU - Hu, Hui-Xin AU - Hu HX AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. FAU - Zhang, Kan AU - Zhang K AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. FAU - Zhao, Yu AU - Zhao Y AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. FAU - Zhao, Bao-Bing AU - Zhao BB AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. FAU - Lou, Hong-Xiang AU - Lou HX AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. FAU - Wang, Xiao-Ning AU - Wang XN AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. FAU - Shen, Tao AU - Shen T AUID- ORCID: 0000-0002-5474-2646 AD - Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China. LA - eng GR - 2020QNQT007/Multidisciplinary Research and Innovation Program of Shandong University/ GR - 81874341/National Natural Sciences Foundation of China/ GR - 81673558/National Natural Sciences Foundation of China/ GR - Qilu Young Scholars Program of Shandong University/ GR - 2019-0994/The fourth national survey on Chinese material medica resources/ PT - Journal Article DEP - 20220207 PL - England TA - Phytother Res JT - Phytotherapy research : PTR JID - 8904486 RN - 0 (Flavonoids) RN - 0 (Flavonols) RN - 0 (Kelch-Like ECH-Associated Protein 1) RN - 0 (NF-E2-Related Factor 2) RN - 0 (NF-kappa B) RN - 276CK9GP9Y (rhamnazin) RN - ZTG9LSS5QH (3-hydroxyflavone) SB - IM MH - Animals MH - Flavonoids MH - Flavonols MH - Inflammation MH - Kelch-Like ECH-Associated Protein 1/metabolism MH - *Lung Diseases MH - Mice MH - NF-E2-Related Factor 2/metabolism MH - NF-kappa B/metabolism MH - Oxidative Stress MH - *Physalis/chemistry/metabolism OTO - NOTNLM OT - NF-kappaB OT - Nrf2 OT - autophagy OT - pulmonary disorders OT - rhamnazin EDAT- 2022/02/08 06:00 MHDA- 2022/04/20 06:00 CRDT- 2022/02/07 12:17 PHST- 2022/01/06 00:00 [revised] PHST- 2021/03/20 00:00 [received] PHST- 2022/01/08 00:00 [accepted] PHST- 2022/02/08 06:00 [pubmed] PHST- 2022/04/20 06:00 [medline] PHST- 2022/02/07 12:17 [entrez] AID - 10.1002/ptr.7403 [doi] PST - ppublish SO - Phytother Res. 2022 Apr;36(4):1692-1707. doi: 10.1002/ptr.7403. Epub 2022 Feb 7.