Multifaceted effects of oligodendroglial exosomes on neurons

• Verfasst von: Fröhlich, Dominik [VerfasserIn]
• Verfasst von: Kuo, Wen Ping [VerfasserIn]
• Verfasst von: Frühbeis, Carsten [VerfasserIn]
• Verfasst von: Sun, Jyh-Jang [VerfasserIn]
• Verfasst von: Zehendner, Christoph Michael [VerfasserIn]
• Verfasst von: Luhmann, Heiko [VerfasserIn]
• Verfasst von: Pinto, Sheena Dominique [VerfasserIn]
• Verfasst von: Toedling, Joern [VerfasserIn]
• Verfasst von: Trotter, Jacqueline [VerfasserIn]
• Verfasst von: Krämer-Albers, Eva-Maria [VerfasserIn]
• Titel: Multifaceted effects of oligodendroglial exosomes on neurons
• Titelzusatz: impact on neuronal firing rate, signal transduction and gene regulation
• Verf.angabe: Dominik Fröhlich, Wen Ping Kuo, Carsten Frühbeis, Jyh-Jang Sun, Christoph M. Zehendner, Heiko J. Luhmann, Sheena Pinto, Joern Toedling, Jacqueline Trotter and Eva-Maria Krämer-Albers
• E-Jahr: 2014
• Jahr: 26 September 2014
• Umfang: 13 S.
• Fussnoten: Gesehen am 20.01.2021
• Titel Quelle: Enthalten in: Philosophical transactions / B
• Ort Quelle: London : Royal Society, 1990
• Jahr Quelle: 2014
• Band/Heft Quelle: 369(2014,1652) Artikel-Nummer 20130510, 13 Seiten
• ISSN Quelle: 1471-2970
• DOI: doi:10.1098/rstb.2013.0510
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Action Potentials
• Sach-SW: Animals
• Sach-SW: Blotting, Western
• Sach-SW: Catalase
• Sach-SW: Cell Communication
• Sach-SW: Cell Hypoxia
• Sach-SW: Cells, Cultured
• Sach-SW: exosomes
• Sach-SW: Exosomes
• Sach-SW: extracellular vesicles
• Sach-SW: Gene Expression Regulation
• Sach-SW: gene regulation
• Sach-SW: Glucose
• Sach-SW: Immunohistochemistry
• Sach-SW: Mice
• Sach-SW: Mice, Inbred C57BL
• Sach-SW: Microarray Analysis
• Sach-SW: neuron-glia interaction
• Sach-SW: Neurons
• Sach-SW: oligodendrocytes
• Sach-SW: Oligodendroglia
• Sach-SW: Phosphorylation
• Sach-SW: Real-Time Polymerase Chain Reaction
• Sach-SW: signal transduction
• Sach-SW: Signal Transduction
• Sach-SW: Superoxide Dismutase
• Sach-SW: Synaptic Transmission
• K10plus-PPN: 1745106715

Abstract

Exosomes are small membranous vesicles of endocytic origin that are released by almost every cell type. They exert versatile functions in intercellular communication important for many physiological and pathological processes. Recently, exosomes attracted interest with regard to their role in cell-cell communication in the nervous system. We have shown that exosomes released from oligodendrocytes upon stimulation with the neurotransmitter glutamate are internalized by neurons and enhance the neuronal stress tolerance. Here, we demonstrate that oligodendroglial exosomes also promote neuronal survival during oxygen-glucose deprivation, a model of cerebral ischaemia. We show the transfer from oligodendrocytes to neurons of superoxide dismutase and catalase, enzymes which are known to help cells to resist oxidative stress. Additionally, we identify various effects of oligodendroglial exosomes on neuronal physiology. Electrophysiological analysis using in vitro multi-electrode arrays revealed an increased firing rate of neurons exposed to oligodendroglial exosomes. Moreover, gene expression analysis and phosphorylation arrays uncovered differentially expressed genes and altered signal transduction pathways in neurons after exosome treatment. Our study thus provides new insight into the broad spectrum of action of oligodendroglial exosomes and their effects on neuronal physiology. The exchange of extracellular vesicles between neural cells may exhibit remarkable potential to impact brain performance.