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Preserve and protect: maintaining axons within functional circuits.

Sarah E Pease¹, Rosalind A Segal¹

¹Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA.

Trends in Neurosciences

|August 30, 2014

Summary

Neural circuits refine through axon survival and elimination. Maintaining axonal health requires coordinated mitochondrial and cytoskeletal pathways, crucial for development, injury, and disease contexts.

Keywords:

Wallerian degeneration axon injury axon maintenance axon survival neurodegeneration neurotrophins

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Area of Science:

Neuroscience
Cell Biology
Developmental Biology

Background:

Neural circuits develop via axon overgrowth followed by selective elimination.
Axon survival and degeneration pathways must be coordinated for functional circuit establishment.
Mitochondrial and cytoskeletal components are vital for axonal health in developing and mature circuits.

Purpose of the Study:

To review recent findings on mechanisms preserving axons.
To explore axonal preservation in development, injury, and disease.

Main Methods:

Literature review of recent scientific findings.
Synthesis of information on axonal maintenance mechanisms.

Main Results:

Identified key mechanisms underlying axonal preservation.
Highlighted the interdependence of mitochondria and cytoskeleton in axonal health.
Discussed pathological axon loss resulting from mitochondrial or cytoskeletal compromise.

Conclusions:

Axonal preservation is a dynamic process involving coordinated pathways.
Understanding these mechanisms is critical for addressing neurological disorders characterized by axon loss.