Djulis (Chenopodium formosanum) and Its Bioactive Compounds Protect Human Lung Epithelial A549 Cells from Oxidative Injury Induced by Particulate Matter via Nrf2 Signaling Pathway

doi:10.3390/molecules27010253

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Title:	Djulis (Chenopodium formosanum) and Its Bioactive Compounds Protect Human Lung Epithelial A549 Cells from Oxidative Injury Induced by Particulate Matter via Nrf2 Signaling Pathway
Authors:	Chu, Chin-Chen Chen, Shih-Ying Chyau, Charng-Cherng Wang, Shu-Chen Chu, Heuy-Ling Duh, Pin-Der
Contributors:	Chi Mei Hospital Department of Health and Nutrition, Chia Nan University of Pharmacy & Science Hungkuang University Department of Food Science and Technology, Chia Nan University of Pharmacy & Science
Keywords:	antioxidant activity stress pm2.5 system urban
Date:	2022
Issue Date:	2023-12-11 14:03:20 (UTC+8)
Publisher:	MDPI
Abstract:	The protective effects of water extracts of djulis (Chenopodium formosanum) (WECF) and their bioactive compounds on particulate matter (PM)-induced oxidative injury in A549 cells via the nuclear factor-erythroid 2-related factor 2 (Nrf2) signaling were investigated. WECF at 50-300 mu g/mL protected A549 cells from PM-induced cytotoxicity. The cytoprotection of WECF was associated with decreases in reactive oxygen species (ROS) generation, thiobarbituric acid reactive substances (TBARS) formation, and increases in superoxide dismutase (SOD) activity and glutathione (GSH) contents. WECF increased Nrf2 and heme oxygenase-1 (HO-1) expression in A549 cells exposed to PM. SP600125 (a JNK inhibitor) and U0126 (an ERK inhibitor) attenuated the WECF-induced Nrf2 and HO-1 expression. According to the HPLC-MS/MS analysis, rutin (2219.7 mu g/g) and quercetin derivatives (2648.2 mu g/g) were the most abundant bioactive compounds present in WECF. Rutin and quercetin ameliorated PM-induced oxidative stress in the cells. Collectively, the bioactive compounds present in WECF can protect A549 cells from PM-induced oxidative injury by upregulating Nrf2 and HO-1 via activation of the ERK and JUN signaling pathways.
Relation:	Molecules, v.27, n.1, Article 253
Appears in Collections:	[Dept. of Health and Nutrition (including master's program)] Periodical Articles [Dept. of Food Science & Technology] Periodical Articles

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