Subcellular localization of alpha-synuclein aggregates and their interaction with membranes

Neural Regeneration Research
Fabiana MiragliaEmanuela Colla

Abstract

For more than a decade numerous evidence has been reported on the mechanisms of toxicity of α-synuclein (αS) oligomers and aggregates in α-synucleinopathies. These species were thought to form freely in the cytoplasm but recent reports of αS multimer conformations when bound to synaptic vesicles in physiological conditions, have raised the question about where αS aggregation initiates. In this review we focus on recent literature regarding the impact on membrane binding and subcellular localization of αS toxic species to understand how regular cellular function of αS contributes to pathology. Notably αS has been reported to mainly associate with specific membranes in neurons such as those of synaptic vesicles, ER/Golgi and the mitochondria, while toxic species of αS have been shown to inhibit, among others, neurotransmission, protein trafficking and mitochondrial function. Strategies interfering with αS membrane binding have shown to improve αS-driven toxicity in worms and in mice. Thus, a selective membrane binding that would result in a specific subcellular localization could be the key to understand how aggregation and pathology evolves, pointing out to αS functions that are primarily affected before onset of irreversible da...Continue Reading

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Citations

Nov 17, 2019·International Journal of Molecular Sciences·Kai-Jung LinTsu-Kung Lin
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Methods Mentioned

BETA
circular
acetylation
NMR
gel filtration
transgenic
protein folding

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