WNT3A Gene

📖 Wiki Page

gene806 wordssynced 2026-04-02

WNT3A Gene

Introduction

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">WNT3A Gene</th>
</tr>
<tr>
<td class="label">Receptor</td>
<td>Affinity</td>
</tr>
<tr>
<td class="label">FZD1</td>
<td>High</td>
</tr>
<tr>
<td class="label">FZD5</td>
<td>High</td>
</tr>
<tr>
<td class="label">FZD7</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">LRP6</td>
<td>Essential</td>
</tr>
<tr>
<td class="label">Region</td>
<td>Level</td>
</tr>
<tr>
<td class="label">Dorsal neural tube</td>
<td>High</td>
</tr>
<tr>
<td class="label">Forebrain</td>
<td>High</td>
</tr>
<tr>
<td class="label">[Hippocampus](/brain-regions/hippocampus)</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">[Cortex](/brain-regions/cortex)</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Cerebellum</td>
<td>High</td>
</tr>
<tr>
<td class="label">Strategy</td>
<td>Agent</td>
</tr>
<tr>
<td class="label">Protein delivery</td>
<td>Recombinant WNT3A</td>
</tr>
<tr>
<td class="label">Gene therapy</td>
<td>AAV-WNT3A</td>
</tr>
<tr>
<td class="label">Small molecules</td>
<td>GSK3β inhibitors</td>
</tr>
<tr>
<td class="label">Receptor agonists</td>
<td>FZD agonists</td>
</tr>
</table>

Wnt3A Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

...

WNT3A Gene

Introduction

Wnt3A Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
title: WNT3A Gene
.infobox.infix-gene
; Gene Symbol
: WNT3A
; Full Name
: WNT Family Member 3A
; Chromosomal Location
: 17q21.31
; NCBI Gene ID
: [89780](https://www.ncbi.nlm.nih.gov/gene/89780)
; OMIM
: [606359](https://www.omim.org/entry/606359)
; Ensembl ID
: [ENSG00000134245](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000134245)
; UniProt ID
[P56704](https://www.uniprot.org/uniprotkb/P56704)
; Associated Diseases
: Alzheimer's Disease, Parkinson's Disease, Autism, Vertebral Defects

Overview

Mermaid diagram (expand to render)

The WNT3A gene (WNT family member 3A) encodes a highly conserved secreted signaling protein that plays fundamental roles in embryonic development, tissue patterning, and adult tissue homeostasis. WNT3A is one of the most studied Wnt ligands due to its potent signaling activity and critical importance in development [@wodarz1998]. In the nervous system, WNT3A is essential for neural tube formation, dorsal-ventral patterning, neuronal differentiation, and synapse formation. WNT3A has been strongly implicated in the pathogenesis of Alzheimer's disease, Parkinson's disease, and neurodevelopmental disorders [@de2003][@zhang2008].

Gene Structure

The WNT3A gene is located on chromosome 17q21.31 and encodes a 352-amino acid secreted protein. The gene shares structural features with other Wnt family members, including conservation of cysteine residues critical for protein folding and function.

Genomic Organization

Chromosome: 17q21.31
Exons: 4
Coding sequence: 352 amino acids
Molecular weight: ~36 kDa

Molecular Function

Signaling Pathways

WNT3A activates multiple downstream pathways:

Canonical Wnt/β-Catenin Pathway

WNT3A is a potent activator of canonical signaling:

Receptor complex formation: WNT3A-FZD-LRP6

DVL phosphorylation: Signal transduction

β-catenin stabilization: Nuclear signaling

TCF/LEF transcription: Target gene activation

Key targets:

CCND1 (cyclin D1)
MYC
AXIN2
Neurogenins

Non-Canonical Pathways

PCP pathway: RHOA, RAC, CDC42
WNT/Ca²⁺ pathway: Calcium signaling

Receptor Binding

WNT3A binds multiple receptors:

Expression Pattern

Brain Expression

WNT3A shows distinctive expression:

Temporal Expression

Embryonic: High expression, developmental patterning
Postnatal: Declines in most regions
Adult: Low but detectable in hippocampus

Role in Neural Development

Neural Tube Patterning

WNT3A is crucial for dorsal-ventral patterning:

Dorsal specification: Promotes dorsal cell fates
Ventral inhibition: Antagonizes SHH signaling
Boundary establishment: Creates morphogen gradients
Neural crest: Induction at border regions

Neurogenesis

WNT3A promotes neuronal differentiation:

Progenitor proliferation: Initial expansion
Neuronal commitment: Proneural gene activation
Migration: Cortical neuron positioning
Differentiation: Final specification

Synaptogenesis

WNT3A regulates synapse formation:

Excitatory synapses: Promotes formation
Synaptic plasticity: Modulates [LTP](/mechanisms/long-term-potentiation)
Spine morphology: Controls [dendritic spines](/cell-types/dendritic-spines)
Synaptic proteins: Regulates PSD-95, SYNAPSIN

Disease Associations

Alzheimer's Disease

WNT3A in AD [@de2003]:

Pathogenic Mechanisms:

Reduced WNT3A signaling in AD brain
[Aβ](/proteins/amyloid-beta) inhibits WNT3A signaling
Restoring WNT3A reduces pathology

Therapeutic Potential:

WNT3A protein delivery
Gene therapy approaches
Small molecule activators

Parkinson's Disease

WNT3A in PD [@zhang2008]:

Protects dopaminergic [neurons](/entities/neurons)
Promotes neuronal survival
May regenerate neurons

Autism Spectrum Disorder

WNT3A polymorphisms associated
Synaptic formation deficits
Circuit development alterations

Vertebral Defects

WNT3A mutations cause:

Vertebral malformations
Caudal regression syndrome
Limb bud defects

Therapeutic Targeting

Approaches

Clinical Potential

Neurodegeneration protection
Cognitive enhancement
Regenerative therapies

Key Publications

Wodarz A, Nusse R. Mechanisms of Wnt signaling. Annu Rev Cell Dev Biol. 1998;14:59-88. PMID: 9604425(https://pubmed.ncbi.nlm.nih.gov/9604425/)

De Ferrari GV, et al. WNT signaling in AD. Mol Psychiatry. 2003;8(3):252-260. PMID: 12646991(https://pubmed.ncbi.nlm.nih.gov/12646991/)

Zhang L, et al. WNT3A in dopaminergic neurons. J Neurosci. 2008;28(22):5437-5447. PMID: 18495873(https://pubmed.ncbi.nlm.nih.gov/18495873/)

Background

The study of Wnt3A Gene 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

[NCBI Gene: WNT3A](https://www.ncbi.nlm.nih.gov/gene/89780)
[UniProt: WNT3A](https://www.uniprot.org/uniprotkb/P56704)
[Ensembl: WNT3A](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000134245)

References

[Wodarz A, Nusse R, Wnt signaling (1998)](https://pubmed.ncbi.nlm.nih.gov/9604425/)

[De Ferrari GV, et al, WNT in AD (2003)](https://pubmed.ncbi.nlm.nih.gov/12646991/)

[Zhang L, et al, WNT3A in PD (2008)](https://pubmed.ncbi.nlm.nih.gov/18495873/)

Pathway Diagram

The following diagram shows the key molecular relationships involving WNT3A Gene discovered through SciDEX knowledge graph analysis:

Mermaid diagram (expand to render)

📖 View canonical wiki page →

WNT3A Gene

WNT3A Gene

Introduction

WNT3A Gene

Introduction

Overview

Gene Structure

Genomic Organization

Molecular Function

Signaling Pathways

Canonical Wnt/β-Catenin Pathway

Non-Canonical Pathways

Receptor Binding

Expression Pattern

Brain Expression

Temporal Expression

Role in Neural Development

Neural Tube Patterning

Neurogenesis

Synaptogenesis

Disease Associations

Alzheimer's Disease

Parkinson's Disease

Autism Spectrum Disorder

Vertebral Defects

Therapeutic Targeting

Approaches

Clinical Potential

Key Publications

See Also

Background

External Links

References

Pathway Diagram