期刊
TRENDS IN ENDOCRINOLOGY AND METABOLISM
卷 25, 期 3, 页码 156-164出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tem.2013.11.004
关键词
AMPK; autophagy; diabetes; heart; mTOR; obesity
资金
- National Institutes of Health grants [P01HL085577, R01HL087023, R01HL101217, R01HL092136]
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 mechanistic target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK). Although 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.
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