Serotonin stimulates secretion of exosomes from microglia cells
Microglia are resident immune cells in the brain and exert important functions in the regulation of inflammatory processes during infection or cellular damage. Upon activation, microglia undergo complex morphological and functional transitions, including increased motility, phagocytosis and cytokine...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
1 December 2014
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| In: |
Glia
Year: 2014, Volume: 63, Issue: 4, Pages: 626-634 |
| ISSN: | 1098-1136 |
| DOI: | 10.1002/glia.22772 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1002/glia.22772 Verlag, Volltext: http://onlinelibrary.wiley.com.ezproxy.medma.uni-heidelberg.de/doi/10.1002/glia.22772/abstract 
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| Author Notes: | Konstantin Glebov, Marie Löchner, Ronald Jabs, Thorsten Lau, Olaf Merkel, Patrick Schloss, Christian Steinhäuser, and Jochen Walter |
MARC
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| 520 | |a Microglia are resident immune cells in the brain and exert important functions in the regulation of inflammatory processes during infection or cellular damage. Upon activation, microglia undergo complex morphological and functional transitions, including increased motility, phagocytosis and cytokine secretion. Recent findings indicate that exosomes, small vesicles that derive from fusion of multivesicular bodies with the plasma membrane, are involved in secretion of certain cytokines. The presence of specific receptors on the surface of microglia suggests communication with neurons by neurotransmitters. Here, we demonstrate expression of serotonin receptors, including 5-HT2a,b and 5-HT4 in microglial cells and their functional involvement in the modulation of exosome release by serotonin. Our data demonstrate the involvement of cAMP and Ca2+ dependent signaling pathways in the regulation of exosome secretion. Co-culture of microglia with embryonic stem cell-derived serotonergic neurons further demonstrated functional signaling between neurons and microglia. Together, these data provide evidence for neurotransmitter-dependent signaling pathways in microglial cells that regulate exosome release. | ||
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