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Glial Cells

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Nervous Tissue: Glial Cells

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Glia, or neuroglia, are vital support cells that assist neurons in their functions. The term "glia" originates from the Greek word for "glue," reflecting their role in holding the nervous system together. These cells can be categorized into six types: four in the central nervous system (CNS) and two in the peripheral nervous system (PNS).
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Microenvironmental interactions of oligodendroglial cells.

Belgin Yalçın¹, Michelle Monje¹

¹Department of Neurology and Neurological Sciences, Stanford University, Palo Alto, CA 94304, USA.

Developmental Cell

|June 30, 2021

Summary

Oligodendrocytes form myelin throughout postnatal development, influenced by cell-intrinsic and environmental factors. Neuron-oligodendroglial interactions enable experience-dependent myelin adaptations for healthy brain function.

Keywords:

astrocytes microglia myelin myelin plasticity neuron-glial interactions oligodendrocyte vascular-glial interactions

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Area of Science:

Neuroscience
Developmental Biology
Cell Biology

Background:

Myelination, the process of forming myelin sheaths around nerve axons, is crucial for efficient neural signal transmission.
This process extends significantly into postnatal development and is regulated by complex cellular and environmental cues.

Purpose of the Study:

To elucidate the multifaceted mechanisms governing developmental myelination.
To understand the role of cell-intrinsic oligodendrocyte properties and microenvironmental interactions.
To explore how neuron-oligodendroglial communication influences myelin plasticity.

Main Methods:

Investigated cell-intrinsic mechanisms within myelin-forming oligodendrocytes.
Analyzed microenvironmental interactions impacting oligodendrocyte precursor cell migration and differentiation.
Examined the formation and stability of myelin internodes.
Studied neuron-oligodendroglial interactions in activity-dependent myelin adaptations.

Main Results:

Developmental myelination is a prolonged process involving both oligodendrocyte-intrinsic factors and external signals.
Oligodendrocyte precursor cell migration, differentiation, and myelin sheath formation are modulated by these interactions.
Neuron-oligodendroglial communication drives experience-dependent myelin adjustments.
These adaptations fine-tune neural circuit dynamics and support neurological health.

Conclusions:

Developmental myelination is a dynamic process regulated by intrinsic and extrinsic factors.
Neuron-oligodendroglial interactions are critical for adaptive myelination throughout life.
Myelin plasticity contributes to optimal neural circuit function and overall brain health.