Journal
NEUROCHEMISTRY INTERNATIONAL
Volume 97, Issue -, Pages 193-199Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuint.2016.04.011
Keywords
Extracellular vesicles; Biomarkers; Neurodegenerative disease; Exosome; Amyloid beta
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Funding
- Emil Aaltonen Foundation Finland
- Academy of Finland
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Exosomes, nano-sized extracellular vesicles secreted by most cell types, are found everywhere in the body. The role of exosomes in cellular functions has in the past years developed from being considered little more than cellular trashcans, to being proven important intercellular messengers and notable contributors to both health and in disease. A vast number of studies have revealed the multiple, and somewhat controversial role of exosomes in Alzheimer's disease, the most common neurodegenerative disease. Exosomes have been shown to spread toxic amyloid-beta and hyperphosphorylated tau between cells, and they have been suspected of inducing apoptosis and thereby contributing to neuronal loss. On the other hand, exosomes seem to possess the ability to reduce brain amyloid-beta through microglial uptake, and they are known to transfer neuroprotective substances between cells. These features, among many others, make exosomes extremely interesting from the point of view of developing novel therapeutic approaches. The fact that exosomes derived from the central nervous system can be found in bodily fluids also makes them an appealing target for biomarker development, which is not limited only to Alzheimer's disease. (C) 2016 Elsevier Ltd. All rights reserved.
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