Cardiomyocyte health: adapting to metabolic changes through autophagy.

Cardiomyocyte health: adapting to metabolic changes through autophagy.
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DOI:
10.1016/j.tem.2013.11.004
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发表时间:
2014-03
影响因子:
10.9
通讯作者:
Gustafsson, Asa B.
Gustafsson, Asa B.
中科院分区:
医学1区
文献类型:
--
作者:
Kubli, Dieter A.;Gustafsson, Asa B.

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Autophagy is important in the heart for maintaining homeostasis when changes in nutrient levels occur. Autophagy is involved in the turnover of cellular components, and is rapidly upregulated during stress. Studies have found that autophagy is reduced in metabolic disorders including obesity and diabetes. This leads to accumulation of protein aggregates and dysfunctional organelles, which contributes to the pathogenesis of cardiovascular disease. Autophagy is primarily regulated by two components: the mammalian target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK). While mTOR integrates information about growth factors and nutrients and is a negative regulator of autophagy, AMPK is an energy sensor and activates autophagy when energy levels are low. These pathways therefore present targets for the development of autophagy-modulating therapies.
AMP激活的蛋白激酶对ULK1(HATG1)的磷酸化将能量传感连接到线粒体。
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