尼古丁胺N-甲基转移酶倒置能防止饮食引起的肥胖
Daniel Kraus1, Qin Yang1, Dong Kong2
11] Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Avenue, Boston, Massachusetts 02215, USA [2] [3] Division of Nephrology, Department of Internal Medicine I, Würzburg University Hospital, Oberdürrbacher Straße 6, 97080 Würzburg, Germany (D.K.); Department of Medicine, Physiology and Biophysics, Center for Diabetes Research and Treatment, and Center for Epigenetics and Metabolism, University of California, Irvine, California 92697, USA (Q.Y.); Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, 00290, Helsinki, Finland (E.P.); Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie Medicine New Brunswick, Dalhousie University, Saint John, New Brunswick E2L4L5, USA (T.C.P.); Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China (F.G.); School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland (L.A.).
尼古丁胺胺N-甲基转移酶 (NNMT) 在肥胖和2型糖尿病中被上调. 抑制NNMT可以增加能量消耗,并通过影响NAD+和聚胺代谢来防止肥胖.
科学领域:
- 代谢性疾病研究研究.
- 分子内分泌学分子内分泌学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 在肥胖和2型糖尿病中,Glut4葡萄糖载体表达减少,影响胰岛素敏感性.
- 尼古丁胺N-甲基转移酶 (NNMT) 通过甲基化反应调节细胞代谢.
研究的目的:
- 调查NNMT在肥胖和2型糖尿病中的作用.
- 探索NNMT作为代谢障碍的潜在治疗点.
主要方法:
- 用DNA阵列分析来识别与Glut4.4相互调节的基因.
- 在体内和体外的研究涉及Nnmt敲击和抑制.
- 测量代谢物,酶活动,基因表达和氧气消耗.
主要成果:
- 在肥胖和糖尿病小鼠的白脂肪组织 (WAT) 和肝脏中,NNMT表达升高.
- Nnmt Knockdown通过增加细胞能量消耗来保护免受饮食引起的肥胖.
- 抑制NNMT可以提高脂肪SAM和NAD+水平,提高聚胺流量和ODC/SSAT活性.
- 抑制NNMT通过聚胺通路酶增加脂肪细胞的氧气消耗.
结论:
- NNMT是基因素甲基化,聚胺流动和NAD+依赖信号的关键调节者.
- 抑制NNMT代表了针对肥胖和2型糖尿病的新疗法策略.
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