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    Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/34561


    標題: Raspberry Ketone Promotes FNDC5 Protein Expression via HO-1 Upregulation in 3T3-L1 Adipocytes
    作者: Tsai, Yung-Chieh
    Chen, Jung-Hua
    Lee, Yen-Mei
    Yen, Mao-Hsiung
    Cheng, Pao-Yun
    貢獻者: Chi Mei Hospital
    Taipei Medical University
    Department of Sport Management, Chia Nan University of Pharmacy & Science
    National Defense Medical Center
    關鍵字: high-fat diet
    heme-oxygenase
    lipid-accumulation
    obesity
    brown
    irisin
    coactivator
    biogenesis
    autophagy
    exercise
    日期: 2022
    上傳時間: 2023-12-11 13:57:57 (UTC+8)
    出版者: WOLTERS KLUWER MEDKNOW PUBLICATIONS
    摘要: Obesity is a global health problem and a risk factor for cardiovascular diseases and cancers. Exercise is an effective intervention to combat obesity. Fibronectin type III domain containing protein 5 (FNDC5)/irisin, a myokine, can stimulate the browning of white adipose tissue by increasing uncoupling protein 1 (UCP1) expression, and therefore may represent a link between the beneficial effects of exercise and improvement in metabolic diseases. Thus, upregulating the endogenous expression of FNDC5/irisin by administering medication would be a good approach for treating obesity. Herein, we evaluated the efficacy of raspberry ketone (RK) in inducing FNDC5/irisin expression and the underlying mechanisms. The expression of brown fat-specific proteins (PR domain containing 16 (PRDM16), CD137, and UCP1), heme oxygenase-1 (HO-1), FNDC5, and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC1 alpha) in differentiated 3T3-L1 adipocyte was analyzed by western blotting or immunofluorescence. The level of irisin in the culture medium was also assayed using an enzyme-linked immunosorbent assay kit. Results showed that RK (50 mu M) significantly induced the upregulation of FNDC5 protein in differentiated 3T3-L1 adipocytes; however, the irisin level in the culture media was unaffected. Moreover, RK significantly increased the levels of PGC1 alpha, brown adipocyte markers (PRDM16, CD137, and UCP1), and HO-1. Furthermore, the upregulation of PGC1 alpha and FNDC5 and the browning effect induced by RK were significantly reduced by SnPP or FNDC5 siRNA, respectively. In conclusion, RK can induce FNDC5 protein expression via the HO-1 signaling pathway, and this study provides new evidence for the potential use of RK in the treatment of obesity.
    關聯: CHINESE JOURNAL OF PHYSIOLOGY, v.65, n.2, pp.80-86
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