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Autophagy and Energy Metabolism

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Autophagy: Biology and Diseases

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 1206))

Abstract

Autophagy is a lysosome-dependent catabolic process. Both extra- and intra-cellular components are engulfed in autophagic vacuoles and degraded to simple molecules, such as monosaccharides, fatty acids and amino acids. Then, these molecules can be further used to produce ATP through catabolic reactions and/or provide building blocks for the synthesis of essential proteins. Therefore, we consider autophagy a critical and fine-tuned process in maintaining energy homeostasis. The complicated relationships between autophagy and energy metabolism have raised broad interest and have been extensively studied. In this chapter, we summarize the relationships enabling autophagy to control or modulate energy metabolism and allowing metabolic pathways to regulate autophagy. Specifically, we review the correlations between autophagy and energy homeostasis in terms of oxidative phosphorylation, reactive oxygen species in mitochondria, glycolysis, metabolism of glycogen and protein, and so on. An understanding of the role of autophagy in energy homeostasis could help us better appreciate how autophagy determines cell fate under stressful conditions or pathological processes.

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Abbreviations

2-DG:

2-deoxy-D-glucose

3-MA:

3-methyladenine

4E-BP1:

Eukaryotic initiation factor 4E binding protein 1

α-KG:

α-ketoglutaric acid

ABCC1:

ATP-binding cassette C1

ADI:

Arginine deiminase

AICAR:

5-aminoimidazole-4-carboxamide ribonucleoside

AMBRA:

Activating molecule in Beclin1-regulated autophagy

AMPK:

Adenosine 5′-monophosphate (AMP)-activated protein kinase

ASS:

Argininosuccinate synthetase

ATF4:

Activating transcription factor 4

ATG:

Autophagy-related gene

ATP:

Adenosine triphosphate

BNIP3:

Bcl2/adenovirus E1B 19-kDa protein-interacting protein 3

CBM:

Carbohydrate-binding module

CMA:

Chaperone-mediated autophagy

DAPK-1:

Death-associated protein kinase 1

eIF:

Eukaryotic initiation factor

EGLN:

Egl-9 family hypoxia-inducible factor

F2,6BP:

Fructose-2,6-bisphosphate

FCCP:

Carbonyl cyanide 4-(trifluoromethoxy)phenylhydrazone

FOXO:

Forkhead box O

G6P:

Glucose-6-phosphate

G6PC:

Glucose-6-phosphatase α

G6PD:

Glucose-6-phosphate dehydrogenase

GAA:

Lysosomal acid α-glucosidase

GABARAPL1:

Γ-aminobutyric acid receptor-associated protein-like 1

GAPDH:

Glyceraldehyde-3-phosphate dehydrogenase

GCL:

Γ-glutamate cysteine ligase

GILT:

Interferon-γ-inducible lysosomal thiol reductase

GLS:

Glutaminase

GLUD1:

Glutamate Dehydrogenase 1

GSH:

Glutathione, γ-L-glutamyl-L-cysteinyl-glycine (reduced)

GSK3:

Glycogen synthase kinase 3

GSSH:

Glutathione, γ-L-glutamyl-L-cysteinyl-glycine (oxidized)

HIF:

Hypoxia-inducible factor

HK:

Hexokinase

HSC70:

Heat shock cognate protein 70

ICD:

Immunogenic cell death

LAMP2A:

Lysosome-associated membrane protein type 2A

LC3:

Microtubule-associated protein 1 light chain 3 (MAP1LC3)

LDHB:

Lactate dehydrogenase B

MPC:

Mitochondrial pyruvate carrier protein

mTOR:

Mammalian target of rapamycin

NADH/NAD+:

Nicotinamide adenine dinucleotide

NADPH:

Nicotinamide adenine dinucleotide phosphate

NOX:

NADPH oxidase

PARP1:

Poly(ADP-ribose) polymerase 1

PFKFB4:

6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 4

PI3K:

Phosphatidylinositol 3-kinase

PI3P:

Phosphatidylinositol-3-phosphate

PIP3:

Phosphatidylinositol 3,4,5-trisphosphate

PK:

Pyruvate kinase

PKM2:

Pyruvate kinase M2 isoform

PKA:

Protein kinase A

PKB:

Protein kinase B, also known as Akt

PPP:

Pentose phosphate pathway

PRODH/POX:

Proline dehydrogenase/oxidase

Raptor:

Regulatory-associated protein of mTOR

Rheb:

Ras homolog enriched in brain

ROS:

Reactive oxygen species

SIRT:

Sirtuin

SLC1A5:

Solute carrier family 1 (neutral amino acid transporter) member 5

SNAREs:

Soluble N-ethylmaleimide-sensitive factor attachment protein receptors

SOD:

Superoxide dismutase

SQSTM1/p62:

Sequestosome 1/p62

Stbd1:

Starch-binding domain-containing protein 1

TFEB:

Transcription factor EB

TIGAR:

TP53-induced glycolysis and apoptosis regulator

TRAF6:

TNF receptor-associated factor 6

TSC1/2:

Tuberous sclerosis 1/2 protein

ULK1:

Unc-51-like autophagy activating kinase 1

v-ATPase:

Vacuolar H+-adenosine triphosphatase ATPase

Vps34:

Vacuole protein sorting 34 (class III phosphatidylinositol 3-kinase)

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Correspondence to Zhenyi Ma .

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© 2019 Science Press and Springer Nature Singapore Pte Ltd.

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Yang, J., Zhou, R., Ma, Z. (2019). Autophagy and Energy Metabolism. In: Qin, ZH. (eds) Autophagy: Biology and Diseases. Advances in Experimental Medicine and Biology, vol 1206. Springer, Singapore. https://doi.org/10.1007/978-981-15-0602-4_16

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