Journal
NEUROSCIENCE RESEARCH
Volume 139, Issue -, Pages 42-47Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neures.2018.08.014
Keywords
ATF3; Mitochondrial dynamics; Nerve injury; Neurodegenerative disease; Axonal transport; DRP1
Categories
Funding
- JSPS KAKENHI [25430036]
- Takeda Science Foundation
- Toyoaki Scholarship Foundation
- MEXT/JSPS KAKENHI [16K15170, 16H05117, 17H05743]
- Japan Foundation for Applied Enzymology
- Grants-in-Aid for Scientific Research [25430036, 17H05743, 16K15170, 16H05117] Funding Source: KAKEN
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Over the last decade, mitochondrial dynamics beyond function during axon regeneration/degeneration have received attention. Axons have an effective delivery system of mitochondria shuttling between soma and axonal terminals, due to their polarized structure. The proper axonal transport of mitochondria, coordinated with mitochondrial fission/fusion and clearance, is vital for supplying high power energy in injured axons. Many researchers have studied mitochondrial dynamics using in vitro cultured cells with significant progress reported. However, the in vitro culture system is missing a physiological environment including glial cells, immune cells, and endothelial cells, whose communications are indispensable to nerve regeneration/degeneration. In line with this, the understanding of mitochondrial behavior in injured axon in vivo is necessary for promoting the physiological understanding of damaged axons and the development of a therapeutic strategy. In this review, we focus on recent insights into in vivo mitochondrial dynamics during axonal regeneration/degeneration, and introduce the advances of mouse strains to visualize mitochondria in a neuron-specific or an injury-specific manner, which are extremely useful for nerve regeneration/degeneration studies. (C) 2018 Elsevier B.V. and Japan Neuroscience Society. All rights reserved.
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