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Autophagy as a crosstalk mediator of metabolic organs in regulation of energy metabolism

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Abstract

Autophagy plays an important role in the regulation of cellular homeostasis through elimination of aggregated proteins, damaged organelles, and intracellular pathogens. Autophagy also contributes to the maintenance of energy balance through degradation of energy reserves such as lipids, glycogen, and proteins in the setting of increased energy demand. Recent studies have suggested that autophagy, or its deficiency, is implicated in the pathogenesis of insulin resistance, obesity, and diabetes. These effects of autophagy or its deficiency in regulation of energy metabolism are mediated not only by cell-autonomous effects, such as direct autophagic degradation of energy stores or intracellular organelles (endoplasmic reticulum and mitochondria) but also by non-cell-autonomous effects, such as induction/suppression of secreted factors or changes of sympathetic tone. In the present review, we highlight a recent surge in the research on the autophagy in the regulation of energy homeostasis, with a focus on its role as a mediator for crosstalk between metabolic organs.

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Acknowledgments

This study was supported by the Global Research Laboratory Grant of the National Research Foundation of Korea (K21004000003-10A0500-00310). Lee MS is the recipient of the Grants from Samsung Biomedical Research Institute (SP1-B2-051-2, GE1B30911).

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The authors declare no competing financial interests.

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  1. Department of Medicine and Samsung Advanced Institute for Health Sciences and Technology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul, 135-710, Korea

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Kim, K.H., Lee, MS. Autophagy as a crosstalk mediator of metabolic organs in regulation of energy metabolism. Rev Endocr Metab Disord 15, 11–20 (2014). https://doi.org/10.1007/s11154-013-9272-6

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