Alliin, capsaicin, and gingerol attenuate endoplasmic reticulum stress-induced hepatic steatosis in HepG2 cells and C57BL/6N mice. (August 2022)

• Record Type: Journal Article
• Authors: Yun, Ye-Rang; Lee, Ji-Eun
• Is Part Of: Journal of functional foods. Volume 95(2022)
• Publication Date: 2022-08
• Subjects: Endoplasmic reticulum stress -- Kimchi active component -- Non-alcoholic fatty liver disease -- Mechanism study -- Tunicamycin; NAFLD non-alcoholic fatty liver disease -- NASH non-alcoholic steatohepatitis -- ER endoplasmic reticulum -- UPR unfolded protein response -- GRP78 glucose-regulated protein 78 -- XBP-1 X-box-binding protein-1 -- ATF4 activating transcription factor 4 -- TG triglyceride -- LXRα liver X receptor α -- AMPK AMP-activated protein kinase -- GOT glutamic oxaloacetic transaminase -- GPT glutamic pyruvic transaminase -- TC total cholesterol -- DMEM Dulbecco's Modified Eagle Medium -- ACC acetyl-coenzyme A carboxylase -- qPCR quantitative real-time polymerase chain reaction -- ND normal group -- TM tunicamycin group -- H&E hematoxylin and eosin -- ORO oil-red O -- standard deviation SD -- C/EBP CCAAT/enhancer-binding protein -- CHOP CCAAT/enhancer-binding protein (C/EBP) homolog protein -- SCD-1 stearoyl-CoA desaturase-1 -- DGAT2 diacylglycerol acyltransferase-2 -- IRE-1 inositol-requiring enzyme 1 -- ATF6 activating transcription factor 6 -- PERK protein kinase R-like ER kinase -- PPARγ peroxisome proliferator-activated receptor γ -- SREBP-1c sterol regulatory element-binding protein 1c, FAS, fatty acid synthase -- IL-6 interleukin-6 -- TNF-α tumor necrosis factor α -- MCP-1 monocyte chemoattractant protein-1 -- HFD high-fat diet; Functional foods -- Analysis -- Periodicals; Food -- Biotechnology -- Periodicals; Nutrition -- Periodicals; 613.2
• DOI: 10.1016/j.jff.2022.105186
• Languages: English
• ISSNs: 1756-4646

Abstract

Graphical abstract: Highlights: Kimchi active components inhibit hepatic steatosis in ER stress-induced HepG2 cells. Kimchi active components inhibit hepatic steatosis through the LXRα/AMPK pathway. Kimchi components inhibit hepatic steatosis in ER stress-induced C57BL/6N mice. Kimchi active components could be used to treat ER stress-induced disease. Abstract: Recently, food ingredients that suppress endoplasmic reticulum (ER) stress have been studied for their potential application in non-alcoholic fatty liver disease (NAFLD) treatment. Kimchi active components can suppress ER stress-related markers; therefore, we investigated the inhibitory effects of alliin, capsaicin, and gingerol on tunicamycin-induced hepatic steatosis in HepG2 cells and C57BL/6N mice by measuring ER stress-, lipogenesis-, and inflammation-related gene expression, and lipid accumulation. Alliin, capsaicin, and gingerol efficiently decreased triglyceride content and all gene expression in tunicamycin-induced cells without cytotoxicity. Alliin, capsaicin, and gingerol inhibited lipogenesis-related gene expression that increased following T0901317 treatment and decreased following AICAR treatment. Furthermore, alliin, capsaicin, and gingerol decreased serum lipid and hepatic lipid levels and all marker expression in tunicamycin-induced mice without hepatic toxicity. They also inhibited lipid accumulation in tunicamycin-induced mice. Collectively, kimchi active components prevented triglyceride accumulation and hepatic steatosis in ER stress-induced HepG2 cells and C57BL/6N mice.