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Neuronal Activity Changes the Number of Neurons That Are Synaptically Connected to OPCs
Daniela Moura1,2, Alekhya Parvathaneni1, Atehsa Sahagun1
1Biology Department, Neuroscience Program, Santa Clara University, Santa Clara, CA 95053.
Eneuro
|October 9, 2023
Summary
Neuronal activity influences oligodendrocyte progenitor cells (OPCs) by controlling their proliferation and the types of neuronal connections they form, impacting myelination during development and plasticity.
Area of Science:
- Neuroscience
- Cell Biology
- Developmental Biology
Background:
- Oligodendrocyte myelination timing and specificity are not fully understood.
- Oligodendrocyte progenitor cells (OPCs) receive neuronal synapses, suggesting neuroglial communication.
- The role of these neuroglial connections in myelination and plasticity needs investigation.
Purpose of the Study:
- To investigate the role of neuroglial connections in myelination during development and neuronal plasticity.
- To analyze OPC proliferation, myelination, synapse formation, and neuronal-glial connectivity in vivo.
- To determine how modulating neuronal activity affects these processes.
Main Methods:
- Utilized chemogenetic tools to modulate neuronal activity levels.
- Employed viral monosynaptic circuit tracing to map neuronal inputs to OPCs.
- Quantified OPC proliferation, myelination, and synapse formation in vivo.
Main Results:
- Increased neuronal activity enhanced OPC activation and proliferation.
- Neuronal activity modulation altered the organization of neuronal-glial connections.
- Specifically, excitatory neuron to OPC connections were affected, not total or inhibitory inputs.
Conclusions:
- Neuronal activity is a key regulator of OPC proliferation and activation.
- Neuronal activity influences the composition of neuronal inputs to OPCs.
- These findings highlight the importance of neuronal activity in OPC circuit development and function.
Keywords:
activity-dependent developmentconnectivitygliogenesisneural glial interactionssynapse formationMore Related Videos
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