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Relationship Between β-Amyloid and Mitochondrial Dynamics

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Abstract

Mitochondria as dynamic organelles undergo morphological changes through the processes of fission and fusion which are major factors regulating their functions. A disruption in the balance of mitochondrial dynamics induces functional disorders in mitochondria such as failed energy production and the generation of reactive oxygen species, which are closely related to pathophysiological changes associated with Alzheimer’s disease (AD). Recent studies have demonstrated a relationship between abnormalities in mitochondrial dynamics and impaired mitochondrial function, clarifying the effects of morphofunctional aberrations which promote neuronal cell death in AD. Several possible signaling pathways have been suggested for a better understanding of the mechanism behind the key molecules regulating mitochondrial morphologies. However, the exact machinery involved in mitochondrial dynamics still has yet to be elucidated. This paper reviews the current knowledge on signaling mechanisms involved in mitochondrial dynamics and the significance of mitochondrial dynamics in controlling associated functions in neurodegenerative diseases, particularly in AD.

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Abbreviations

Aβ:

β-Amyloid

AD:

Alzheimer’s disease

AMPAR:

α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor

APOE:

Apolipoprotein E

AIF:

Apoptosis inducing factor

ATP:

Adenosine triphosphate

Cyt C:

Cytochrome C

DAG:

Diacylglycerol

Drp1:

Dynamin-related protein 1

ETC:

Electronic transport complex

ER:

Endoplasmic reticulum

Fis1:

Fission protein 1

iGluRs:

Ionotropic glutamate receptors

IMM:

Inner mitochondrial membrane

IDE:

Insulin-degrading enzyme

IP3:

Inositol 1,4,5-triphosphate

MARCH5:

Membrane-associated ring-CH 5

ΔΨm:

Mitochondrial membrane potential

mGluRs:

Metabotropic glutamate receptors

Mfn1:

Mitofusin 1

Mfn2:

Mitofusin 2

NFT:

Neurofibrillary tangle

NMDAR:

N-methyl-D-aspartate receptor

Opa1:

Optic atrophy 1

OMM:

Outer mitochondrial membrane

OXPHOS:

Oxidative phosphorylation

PITRM1:

Pitrilysin metallopeptidase 1

PLC:

Phospholipase C

PTM:

Post-translational modifications

PP2A:

Protein phosphatase 2A

ROS:

Reactive oxygen species

RAGE:

Receptor for advanced glycation end products

SUMO:

Small ubiquitin-like modifier

SIMH:

Stress-induced mitochondrial hyperfusion

TIM:

Translocase of the inner membrane

TOM:

Translocase of the outer membrane

α7nAChR:

α7 Nicotinic acetylcholine receptor

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Acknowledgments

This research was supported by the National R&D Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2013M3A9B4076520) and Next-Generation Biogreen 21 Program (No. PJ011141), Rural Development Administration, Republic of Korea.

Author Contributions

Kim DI: Conception and design, Collection and assembly of data, Manuscript writing, Lee KH: Technical or material support, Oh JY: Technical or material support, Kim JS: Technical or material support, HJ Han: Critical revision of the manuscript for important intellectual content, study supervision.

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Correspondence to Ho Jae Han.

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The authors declare that there is no conflict of interests regarding the publication of this paper.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Kim, D.I., Lee, K.H., Oh, J.Y. et al. Relationship Between β-Amyloid and Mitochondrial Dynamics. Cell Mol Neurobiol 37, 955–968 (2017). https://doi.org/10.1007/s10571-016-0434-4

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  • DOI: https://doi.org/10.1007/s10571-016-0434-4

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