Abstract
Controlled by a strict mechanism, intracellular calcium (Ca(2+)) is closely related to various cellular activities, including the regulation of autophagy. Researchers believed that under normal or stress state, Ca(2+) has a positive or negative regulation effect on autophagy, the mechanisms of which are different. This bidirectional role of Ca(2+), promotive or suppressing in the regulation of autophagy under different conditions remains controversial, so as the potential mechanisms. Several studies reported that Ca(2+) promotes autophagy through plenty of ways, like inositol 1,4,5-trisphosphate receptor (IP3R) and beclin1 pathway, calmodulin-dependent kinase kinase beta (CaMKKβ)–AMPK–mTOR pathway, mitochondrial energy metabolism-related Ca(2+) uptake, lysosome’s regulation of Ca(2+) signal, and so on. Others thought Ca(2+) may inhibit autophagy through IP3R and beclin1–Bcl-2 complex and the AMPK–mTOR pathway, either. It seems to be still a long way to thoroughly understand the truth of Ca(2+) and autophagy.
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Abbreviations
- [Ca(2+)]cyt:
-
Cytoplasmic calcium concentration
- [Ca(2+)]ER:
-
Endoplasmic reticulum calcium concentration
- 2-APB:
-
2-Aminoethoxydiphenyl borate
- AMP:
-
Adenosine monophosphate
- AMPK:
-
Adenosine 5′-monophosphate (AMP)-activated protein kinase
- Atg:
-
Autophagy associated gene
- ATP:
-
Adenosine triphosphate
- Ca(2+):
-
Calcium ion
- CaMKK:
-
Calmodulin-dependent protein kinase kinase
- cAMP:
-
Cyclic adenosine monophosphate
- CICR:
-
Calcium-induced Ca(2+) release
- DAPK:
-
Death-associated protein kinase
- DRAM:
-
Damage-regulated autophagy modulator
- Epac:
-
Exchange protein directly activated by cAMP
- GFP:
-
Green fluorescent protein
- GPN:
-
Glycine-L-phenylalanine amide-naphthalene
- IMPase:
-
Inositol monophosphatase
- IP3:
-
1,4,6-inositol triphosphate
- IP3R:
-
1,4,5-inositol triphosphate receptor
- LC3:
-
Microtubule-associated protein 1 light chain 3
- LRRK:
-
Leucine-rich repeat kinase
- mTOR:
-
Mammalian target of rapamycin
- NAADP:
-
Nicotinic acid adenine dinucleotide phosphate
- NAD:
-
Nicotinamide adenine dinucleotide
- NADH:
-
Reduced form of nicotinamide-adenine dinucleotid
- OCR:
-
Oxygen consumption rate
- PDH:
-
Pyruvate dehydrogenase
- PLC:
-
Phospholipase C
- PTP:
-
Permeability transition pore
- ROS:
-
Reactive oxygen species
- SERCA:
-
Sarco/endoplasmic reticulum Ca(2+) ATPase
- siRNA:
-
Small interfering RNA
- SNAREs:
-
Soluble N-ethylmaleimide-sensitive factor attachment protein receptor
- TPCs:
-
Two-pore channels
- TRP:
-
Transient receptor potential channel
- TRPML:
-
Transient receptor potential channel, mucolipin subfamily
- ULK:
-
Uncoordinated 51-like kinase
- VDAC:
-
Voltage-dependent anion-selective channel
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Hu, YX., Han, XS., Jing, Q. (2019). Ca(2+) Ion and Autophagy. 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_7
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DOI: https://doi.org/10.1007/978-981-15-0602-4_7
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