Filtering out the noise in axon guidance.

08:00 EDT 29th March 2019 | BioPortfolio

Summary of "Filtering out the noise in axon guidance."

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Name: Nature reviews. Neuroscience
ISSN: 1471-0048


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Medical and Biotech [MESH] Definitions

The mechanism by which a neuronal process outgrows toward a target led by the GROWTH CONE. Local guidance cues are provided by cell surface proteins that act on the growing axon.

First segment of axon that connects distal axon segments to the neuronal CELL BODY at the axon hillock region. The axon initial segment is not protected by the MYELIN SHEATH and has properties critical for axonal growth. The axon initial segment and the axon hillock form an axonal trigger zone.

A receptor for NETRIN-1 that contains four membrane distal (N-terminal) Ig-like C2 domains and six membrane proximal (C-terminal) fibronectin type III domains. It is expressed primarily in the nerve axons and differentiated intestinal cells and is required for AXON GUIDANCE, mediating axon attraction of neuronal GROWTH CONES; however, it may also trigger axon repulsion through association with the UNC5 netrin-1 receptor. DCC also induces APOPTOSIS when it is unbound from netrin-1. Deletions of the DCC gene are observed in tumor metastases and the protein is not expressed in undifferentiated COLORECTAL CARCINOMA cells.

A family of extracellular proteins that are related structurally to LAMININ. They function as CHEMOTACTIC FACTORS for CELL MIGRATION and AXON GUIDANCE, acting as chemoattractants for some cell types, and as chemorepellents for others.

Degeneration of distal aspects of a nerve axon following injury to the cell body or proximal portion of the axon. The process is characterized by fragmentation of the axon and its MYELIN SHEATH.

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