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Architecting the myelin landscape.

Lindsay A Osso1, Jonah R Chan1

  • 1UCSF Weill Neuroscience Graduate Program and Department of Neurology, University of California, San Francisco, San Francisco, CA, USA.

Current Opinion in Neurobiology
|July 15, 2017
PubMed
Summary
This summary is machine-generated.

Oligodendrocytes, the myelin-producing cells in the brain, use axonal signals to choose which nerve fibers to wrap with myelin. This process is crucial for efficient nerve signal transmission.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Glial Biology

Background:

  • Myelin is essential for rapid and efficient nerve impulse conduction.
  • Not all axons are myelinated, and myelination patterns are complex, especially in the central nervous system.
  • While Schwann cells require axonal signals for myelination, oligodendrocytes can myelinate without axons, but their pattern formation is not fully understood.

Purpose of the Study:

  • To explore the mechanisms by which myelinating glia, specifically oligodendrocytes, select axons for myelination.
  • To review the various signaling cues that influence oligodendrocyte myelination patterns.
  • To highlight recent findings on the role of axonal activity and cell adhesion molecules in axon selection.

Main Methods:

  • Literature review of recent advances in glial biology and neuroscience.
  • Analysis of studies investigating oligodendrocyte-myelin-axon interactions.
  • Synthesis of evidence implicating axonal signaling in myelination patterns.

Main Results:

  • Oligodendrocytes are influenced by multiple types of axonal cues, including inductive, attractive, permissive, repulsive, and preventative signals.
  • Synaptic activity and membrane-bound adhesion molecules have been identified as key axonal cues directing myelination.
  • Axonal signaling plays a critical role in architecting complex myelination patterns in the central nervous system.

Conclusions:

  • Axonal signaling is a critical determinant of myelination specificity by oligodendrocytes.
  • Understanding these cues is vital for deciphering the complex organization of the central nervous system.
  • Further research into these interactions may reveal therapeutic targets for demyelinating diseases.