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| 標題: | High density lipoprotein (HDL) reverses palmitic acid induced energy metabolism imbalance by switching CD36 and GLUT4 signaling pathways in cardiomyocyte |
| 作者: | Wen, Su-Ying
Velmurugan, Bharath Kumar
Day, Cecilia Hsuan
Shen, Chia-Yao
Chun, Li-Chin
Tsai, Yi-Chieh
Lin, Yueh-Min
Chen, Ray-Jade
Kuo, Chia-Hua
Huang, Chih-Yang |
| 貢獻者: | Taipei City Hosp, Renai Branch, Dept Dermatol
Mackay Jr Coll Med Nursing & Management, Ctr Gen Educ
Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City, Vietnam
MeiHo Univ, Dept Nursing
Chia Nan Univ Pharm & Sci, Dept Hosp & Hlth Care Adm
China Med Univ, Grad Inst Basic Med Sci
Changhua Christian Hosp, Dept Pathol
Jen Teh Jr Coll Med Nursing & Management, Dept Med Technol
Taipei Med Univ, Sch Med, Dept Surg
Univ Taipei, Dept Sports Sci
China Med Univ, Grad Inst Chinese Med Sci
Asia Univ, Dept Biol Sci & Technol |
| 關鍵字: | CD36
energy metabolism
HDL
GLUT4
obesity
Palmitic acid |
| 日期: | 2017-11 |
| 上傳時間: | 2018-11-30 15:53:06 (UTC+8) |
| 出版者: | Wiley |
| 摘要: | In our previous study palmitic acid (PA) induced lipotoxicity and switches energy metabolism from CD36 to GLUT4 in H9c2 cells. Low level of high density lipoprotein (HDL) is an independent risk factor for cardiac hypertrophy. Therefore, we in the present study investigated whether HDL can reverse PA induced lipotoxicity in H9c2 cardiomyoblast cells. In this study, we treated H9c2 cells with PA to create a hyperlipidemia model in vitro and analyzed for CD36 and GLUT4 metabolic pathway proteins. CD36 metabolic pathway proteins (phospho-AMPK, SIRT1, PGC1 alpha, PPAR alpha, CPT1 beta, and CD36) were decreased by high PA (150 and 200 mu g/mu l) concentration. Interestingly, expression of GLUT4 metabolic pathway proteins (p-PI3K and pAKT) were increased at low concentration (50 mu g/mu l) and decreased at high PA concentration. Whereas, phospho-PKC., GLUT4 and PDH proteins expression was increased in a dose dependent manner. PA treated H9c2 cells were treated with HDL and analyzed for cell viability. Results showed that HDL treatment induced cell proliferation efficiency in PA treated cells. In addition, HDL reversed the metabolic effects of PA: CD36translocation was increased and reduced GLUT4 translocation, but HDL treatment significantly increased CD36 metabolic pathway proteins and reduced GLUT4 pathway proteins. Rat neonatal cardiomyocytes showed similar results. In conclusion, HDL reversed palmatic acid-induced lipotoxicity and energy metabolism imbalance in H9c2 cardiomyoblast cells and in neonatal rat cardiomyocyte cells. |
| 關聯: | Journal of Cellular Physiology, v.232, n.11, pp.3020-3029 |
| 顯示於類別: | [醫務管理系(所)] 期刊論文
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