Related Experiment Video
Updated: Aug 6, 2025

10:09
Characterization of Immune Cell-derived Extracellular Vesicles and Studying Functional Impact on Cell Environment
Published on: June 2, 2020
6.9K
Emerging Roles of Neuronal Extracellular Vesicles at the Synapse
Ashley J Mason1,2,3, Christopher Deppmann1,2, Bettina Winckler1,3
1Neuroscience Graduate Program, University of Virginia, Charlottesville, VA, USA.
Summary
Extracellular vesicles (EVs) are crucial for cell communication, especially in the nervous system. This review explores how these vesicles are made, function, and impact neuronal signaling and development.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Extracellular vesicles (EVs) are released by most cell types and mediate intercellular communication.
- Neurons secrete EVs, establishing a novel neuronal communication pathway.
- Understanding EV biology is key to deciphering their role in nervous system function.
Purpose of the Study:
- To review the fundamental cell biology of extracellular vesicles (EVs) in the nervous system.
- To highlight recent advancements in understanding EV biogenesis, cargo loading, secretion, and uptake.
- To discuss the functional implications of EV signaling in recipient neurons and glia.
Main Methods:
- Literature review of current research on extracellular vesicles (EVs) in the nervous system.
- Synthesis of findings related to EV biogenesis, cargo, secretion, and uptake mechanisms.
- Analysis of studies demonstrating EV-mediated modulation of synaptic function and neuronal morphogenesis.
Main Results:
- EVs play significant roles in both short- and long-distance signaling.
- Neuronal EVs are involved in modulating synaptic function and neuronal development.
- Key cellular processes including biogenesis, cargo selection, secretion, and uptake are critical for EV function.
Conclusions:
- Extracellular vesicles represent a vital communication platform in the nervous system.
- Further research into EV biology is essential for understanding neurological processes and developing therapeutic strategies.
- EVs mediate critical functions in recipient neurons and glia, impacting synaptic plasticity and development.
Related Concept Videos
Fusion of Secretory Vesicles with the Plasma Membrane
11.2K
Proteins and neurotransmitters in secretory vesicles can be released from a cell upon vesicle docking, priming, and fusion with the plasma membrane. Vesicles are docked and primed in preparation for the quick exocytosis of their contents in response to a stimulus. The fusion process is mainly carried out by a SNAP Receptor or SNARE complex, consisting of synaptobrevin, syntaxin-1, and SNAP-25.
In 1993, Jim Rothman proposed that the antiparallel pairing of vesicular and transmembrane SNAREs, or...
In 1993, Jim Rothman proposed that the antiparallel pairing of vesicular and transmembrane SNAREs, or...
11.2K
Synaptic Signaling
5.7K
Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
The presynaptic neuron fires an action potential that...
Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
The presynaptic neuron fires an action potential that...
5.7K
Exocytosis
6.9K
Exocytosis is a process that releases molecules outside the cell. Like other bulk transport mechanisms, exocytosis requires energy.
Exocytosis is the opposite of endocytosis, which brings molecules inside the cell. Sometimes, the released materials are signaling molecules. For example, neurons typically use exocytosis to release neurotransmitters. Cells also use exocytosis to insert proteins such as ion channels into their cell membranes, secrete proteins for use in the extracellular matrix, or...
Exocytosis is the opposite of endocytosis, which brings molecules inside the cell. Sometimes, the released materials are signaling molecules. For example, neurons typically use exocytosis to release neurotransmitters. Cells also use exocytosis to insert proteins such as ion channels into their cell membranes, secrete proteins for use in the extracellular matrix, or...
6.9K
The Synapse
126.2K
Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
126.2K
Chemical Synapses
8.9K
Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
8.9K
Neuronal Communication
1.2K
Neurons, the fundamental units of the brain and nervous system, communicate through complex electrochemical signals that underpin all cognitive and bodily functions. This communication is primarily facilitated by a process involving the generation and propagation of an action potential along the axon of the neuron. When the internal electrical charge of a neuron surpasses a certain threshold, an action potential is triggered. This rapid change in voltage travels swiftly along the axon to the...
1.2K

