The AMPK Agonist PT1 and mTOR Inhibitor 3HOI-BA-01 Protect Cardiomyocytes After Ischemia Through Induction of Autophagy
2016
Myocardial ischemia has become one of the main causes of sudden cardiac death worldwide. Autophagy has been demonstrated to protect cardiomyocytes from ischemia/reperfusion (I/R)-induced damage. A novel small molecule compound 2-Chloro-5-[[5-[[5-(4,5-Dimethyl-2-nitrophenyl)-2-furanyl]methylene]-4,5-dihydro-4-oxo-2-thiazolyl]amino]benzoic acid (PT1) has been previously shown to specifically activate 5′-adenosine monophosphate-activated protein kinase (AMPK). Because AMPK activation effectively induces autophagy, we tested the protective efficacy of PT1 on cardiomyocytes after oxygen glucose deprivation/reoxygenation (OGD/R) in vitro. Mouse neonatal cardiomyocytes were treated with PT1 after OGD/R. 3-[4-(1,3-benzodioxol-5-yl)-2-oxo-3-buten-1-yl]-3-hydroxy-1,3-dihydro-2H-indol-2-one (3HOI-BA-01), a novel small compound showing potent inhibitory effect on mammalian target of rapamycin (mTOR) activation, was also tested for its cardioprotective effect, based on the established relationship between mTOR signali...
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