Radial glial cell

Radial glial cell is a pivotal cell type involved in the development of the central nervous system (CNS). These cells are characterized by their unique morphology and function, which contribute to the formation of the neural tube and the subsequent development of the brain and spinal cord.

Morphology

Radial glial cells are bipolar in shape, with a long radial process that extends from the ventricular surface of the neural tube to the pial surface. This radial process is a defining feature of radial glial cells and is crucial for their function in neurogenesis and neuronal migration.

Function

Radial glial cells serve multiple functions during CNS development. They act as neural stem cells, giving rise to both neurons and glial cells. They also provide a scaffold for migrating neurons, guiding them to their appropriate locations in the developing brain and spinal cord.

Neurogenesis

Radial glial cells are the primary progenitor cells in the developing CNS. They undergo asymmetric cell division to generate neurons and other glial cells. This process is regulated by various growth factors and transcription factors, which control the balance between self-renewal and differentiation.

Neuronal Migration

The radial processes of radial glial cells serve as a guide for migrating neurons. Newly formed neurons move along these processes to reach their final destinations in the developing CNS. This process is crucial for the proper formation of neural circuits and the overall organization of the brain and spinal cord.

Clinical Significance

Abnormalities in radial glial cells can lead to various neurodevelopmental disorders, including microcephaly, lissencephaly, and neuronal migration disorders. Understanding the biology of radial glial cells can therefore provide insights into the pathogenesis of these disorders and potential therapeutic strategies.

See Also

• Neurogenesis
• Neuronal migration
• Neurodevelopmental disorders