DCC Netrin 1 Receptor Protein

DCC Netrin 1 Receptor Protein

Introduction

Dcc Netrin 1 Receptor Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

--- [@dcc2015]
title: DCC Netrin 1 Receptor Protein [@dependence2002]
description: DCC is the primary receptor for netrin-1, mediating axon attraction. It functions as a dependence receptor, inducing [apoptosis](/entities/apoptosis) when netrin-1 is absent. The cytoplasmic tail contains binding sites for downstream signaling proteins including FAK, SRC, and disabled proteins. [@dcc2017a]
--- [@netrin2014]

DCC Netrin 1 Receptor Protein

Introduction

Dcc Netrin 1 Receptor Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

--- [@dcc2015]
title: DCC Netrin 1 Receptor Protein [@dependence2002]
description: DCC is the primary receptor for netrin-1, mediating axon attraction. It functions as a dependence receptor, inducing [apoptosis](/entities/apoptosis) when netrin-1 is absent. The cytoplasmic tail contains binding sites for downstream signaling proteins including FAK, SRC, and disabled proteins. [@dcc2017a]
--- [@netrin2014]

<div class="infobox infobox-protein"> [@dcc2018]
<table> [@fak2007]
<tr><th colspan="2" class="infobox-header">DCC Netrin 1 Receptor Protein</th></tr> [@dcc2019]
<tr><td class="label">Protein Name</td><td>DCC Netrin 1 Receptor Protein</td></tr>
<tr><td class="label">Gene</td><td><a href="/genes/DCC">DCC</a></td></tr>
<tr><td class="label">UniProt ID</td><td><a href="https://www.uniprot.org/uniprot/Q9Y266">Q9Y266</a></td></tr>
<tr><td class="label">PDB ID</td><td>5YJT, 5YJZ</td></tr>
<tr><td class="label">Molecular Weight</td><td>~175 kDa</td></tr>
<tr><td class="label">Subcellular Localization</td><td>Plasma membrane, cytoplasm</td></tr>
<tr><td class="label">Protein Family</td><td>Ig superfamily, DCC family</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/amyotrophic-lateral-sclerosis" style="color:#ef9a9a">Amyotrophic Lateral Sclerosis</a>, <a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/carcinoma" style="color:#ef9a9a">Carcinoma</a>, <a href="/wiki/ms" style="color:#ef9a9a">Ms</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">42 edges</a></td>
</tr>
</table>
</div>

Overview

DCC (Deleted in Colorectal Cancer) is the primary receptor for the axon guidance molecule netrin-1, playing crucial roles in neuronal development, circuit formation, and cellular survival. As a dependence receptor, DCC induces apoptosis in the absence of its ligand netrin-1, making it a key regulator of neuronal viability throughout life.

Structure

DCC is a type I transmembrane protein with the following domain architecture:

• Extracellular Domain:
• Five immunoglobulin (Ig)-like domains (NCCs 1-5) mediating netrin-1 binding
• Six fibronectin type III (FNIII) repeats involved in receptor oligomerization and interactions
• The Ig domains 5-6 are critical for high-affinity netrin-1 binding
• Transmembrane Domain: Single pass α-helical transmembrane region
• Cytoplasmic Tail: Contains multiple signaling motifs:
• Three PxxP motifs for SH3 domain interactions
• Two NPXY motifs for PTB domain interactions
• Sites for FAK, SRC, and Disabled-1 (DAB1) binding
• Tyrosine phosphorylation sites for downstream signaling activation

Normal Function

Axon Guidance and Neuronal Migration

DCC functions as the primary netrin-1 receptor mediating long-range axon attraction:

Dependence Receptor Function

DCC acts as a dependence receptor—a dual-function receptor that promotes survival in the presence of ligand but triggers apoptosis when ligand is absent:

• With Netrin-1: Activates pro-survival signaling (PI3K/AKT, MAPK/ERK pathways)
• Without Netrin-1: Induces apoptosis through caspase activation and mitochondrial pathways

• Developmental cell death
• Elimination of inappropriate neuronal connections
• Tissue homeostasis

Signaling Pathways

DCC activates multiple downstream signaling cascades:

Role in Neurodegeneration

Alzheimer's Disease

DCC dysfunction may contribute to AD pathogenesis through several mechanisms:

• Synaptic Integrity: DCC is enriched at synapses and regulates synaptic plasticity. Loss of DCC signaling may contribute to synaptic degeneration in AD
• Neuronal Migration Defects: Altered DCC-mediated neuronal positioning in AD brains
• Axonal Tract Integrity: DCC deficiency may lead to disruption of major white matter tracts affected in AD

Parkinson's Disease

• Dopaminergic Neuron Development: DCC guides mesencephalic dopaminergic neuron axons toward their targets
• Neuroprotection: Netrin-1/DCC signaling provides neuroprotective effects against dopaminergic neuron degeneration
• Axonal Maintenance: DCC may help maintain axonal integrity of nigrostriatal pathway

Amyotrophic Lateral Sclerosis (ALS)

• Motor Neuron Connectivity: DCC-mediated axon guidance is critical for motor neuron circuit formation
• Axonal Degeneration: Loss of DCC function may contribute to progressive motor neuron axon degeneration

Developmental Disorders

• Congenital Mirror Movements: Heterozygous DCC mutations cause mirror movements due to bilateral corticospinal tract projections
• Horizontal Gaze Palsy with Progressive Scoliosis (HGPPS): DCC mutations disrupt ocular motor and spinal cord development

Expression Pattern

DCC expression is highest during development and remains detectable in the adult brain:

• Developmental Expression: High in fetal brain, especially in regions undergoing neurogenesis and axon pathfinding
• Adult Expression:
• Cerebral [cortex](/brain-regions/cortex) (layers II-III, V)
• [Hippocampus](/brain-regions/hippocampus) (CA3, dentate gyrus)
• Cerebellum (Purkinje cells)
• Substantia nigra (dopaminergic neurons)
• Spinal cord (motor neurons)

Therapeutic Targeting

Current Status

• No FDA-approved drugs directly target DCC
• Netrin-1/DCC modulation is an active area of research

Potential Therapeutic Approaches

Challenges

• DCC's dual function (survival vs. death) makes targeting complex
• Systemic administration may affect non-neuronal tissues
• [Blood-brain barrier](/entities/blood-brain-barrier) penetration required for CNS delivery

See Also

• [DCC Gene](/genes/DCC)
• [Netrin-1](/proteins/netrin-1)
• [UNC5A Protein](/proteins/UNC5A-Protein)
• [UNC5B Protein](/proteins/UNC5B-Protein)
• [Axon Guidance Pathways](/mechanisms/axon-guidance)
• [Apoptosis Pathways](/mechanisms/apoptosis)
• [PI3K/AKT Signaling](/mechanisms/pi3k-akt-signaling)

Background

The study of Dcc Netrin 1 Receptor Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.

Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.

External Links

• [PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
• [Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
• [Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data

References