WNT5B Gene

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WNT5B Gene

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wiki page Created: 2026-04-02T07:19:27 By: crosslink-migration Quality: 50% ✓ SciDEX ID: wiki-genes-wnt5b

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WNT5B Gene

| Property | Value |
|----------|-------|
| Gene Symbol | WNT5B |
| Full Name | WNT Family Member 5B |
| Chromosomal Location | 12p13.33 |
| NCBI Gene ID | 64640 |
| OMIM ID | 609351 |
| Ensembl ID | ENSG00000173230 |
| UniProt ID | Q9H1J7 |
| Encoded Protein | Wnt-5b |
| Protein Family | Wnt family (WNT5B is a ligand) |
| Molecular Weight | ~40 kDa (secreted glycoprotein) |
| Tissue Expression | Brain, spinal cord, lung, pancreas, kidney |

</div>

Overview

WNT5B (Wnt Family Member 5B) is a secreted glycoprotein that functions as a ligand in the Wnt signaling pathway. Together with its close paralog [WNT5A](/genes/wnt5a), WNT5B belongs to the non-canonical Wnt subfamily that primarily signals through pathways independent of β-catenin. While WNT5A has been more extensively studied, WNT5B has emerging importance in neural development and neurodegenerative diseases [@wnt5b_wnt5a_comparison].

Wnt signaling is crucial for embryonic development, tissue homeostasis, and cellular function throughout the nervous system. WNT5B, as a non-canonical Wnt ligand, primarily activates the planar cell polarity (PCP) pathway and calcium-dependent signaling cascades. These pathways regulate cytoskeletal dynamics, cell migration, and tissue patterning during development and in adult tissues [@wnt5b_signaling].

...

WNT5B Gene

| Property | Value |
|----------|-------|
| Gene Symbol | WNT5B |
| Full Name | WNT Family Member 5B |
| Chromosomal Location | 12p13.33 |
| NCBI Gene ID | 64640 |
| OMIM ID | 609351 |
| Ensembl ID | ENSG00000173230 |
| UniProt ID | Q9H1J7 |
| Encoded Protein | Wnt-5b |
| Protein Family | Wnt family (WNT5B is a ligand) |
| Molecular Weight | ~40 kDa (secreted glycoprotein) |
| Tissue Expression | Brain, spinal cord, lung, pancreas, kidney |

</div>

Overview

WNT5B (Wnt Family Member 5B) is a secreted glycoprotein that functions as a ligand in the Wnt signaling pathway. Together with its close paralog [WNT5A](/genes/wnt5a), WNT5B belongs to the non-canonical Wnt subfamily that primarily signals through pathways independent of β-catenin. While WNT5A has been more extensively studied, WNT5B has emerging importance in neural development and neurodegenerative diseases [@wnt5b_wnt5a_comparison].

Wnt signaling is crucial for embryonic development, tissue homeostasis, and cellular function throughout the nervous system. WNT5B, as a non-canonical Wnt ligand, primarily activates the planar cell polarity (PCP) pathway and calcium-dependent signaling cascades. These pathways regulate cytoskeletal dynamics, cell migration, and tissue patterning during development and in adult tissues [@wnt5b_signaling].

The distinction between WNT5A and WNT5B is important, as they have both overlapping and distinct functions. While sharing receptors and downstream pathways, WNT5B has unique expression patterns and tissue-specific roles that are only beginning to be characterized [@wnt5b_wnt5a_comparison].

Function

Non-Canonical Wnt Signaling

WNT5B primarily signals through non-canonical Wnt pathways that do not involve β-catenin stabilization. These pathways include:

Planar Cell Polarity (PCP) Pathway

The PCP pathway is the major non-canonical Wnt signaling route for WNT5B. Upon binding to Frizzled (FZD) receptors, WNT5B activates downstream effectors including Dishevelled (DVL), which signals through PCP-specific mediators such as:

Vangl2: Core PCP component that regulates cellular polarity
Celsr1-3: Cadherin receptors involved in planar polarity
Flamingo (Fmi): Adhesion molecule in PCP signaling

In neurons, PCP signaling regulates dendritic arborization, axonal guidance, and synaptic connectivity [@wnt5b_pcp]. The PCP pathway is particularly important for:

Neuronal migration during cortical development
Axon pathfinding and commissure formation
Dendritic orientation and tiling

Calcium Signaling

WNT5B can activate calcium-dependent signaling through FZD receptors coupled to heterotrimeric G-proteins. This pathway involves:

PLC (Phospholipase C): Generates IP3 and DAG
CaMKII (Calcium/Calmodulin-dependent Kinase II): Calcium-activated kinase
PKC (Protein Kinase C): DAG-activated kinase
Calcineurin: Calcium-activated phosphatase

Calcium signaling modulates synaptic plasticity, gene expression, and cytoskeletal dynamics. In neurons, WNT5B-mediated calcium signaling contributes to activity-dependent morphological changes [@wnt5b_synapse].

Receptor Interactions

WNT5B signals through multiple receptor types with distinct downstream effects:

Frizzled Receptors

WNT5B binds to several FZD receptors, with highest affinity for FZD5 and FZD8 [@wnt5b_receptor]. The receptor repertoire determines downstream pathway specificity:

FZD5 → Strong PCP signaling
FZD8 → Calcium signaling predominates
FZD3/FZD6 → Neuronal guidance

Ryk Receptor

WNT5B also signals through Ryk (Receptor-like Tyrosine Kinase), which is involved in:

Axon guidance during development
Synapse formation
Adult neurogenesis

The Ryk receptor has unique downstream signaling not shared with FZD receptors, expanding the functional repertoire of WNT5B [@wnt5b_receptor_interaction].

Neural Development

Cortical Development

WNT5B plays critical roles in cortical development through multiple mechanisms [@wnt5b_cortical]:

Neuronal migration: WNT5B gradients direct radial migration of excitatory neurons from the ventricular zone to the cortical plate

Cortical patterning: WNT5B signaling helps establish the anterior-posterior and medial-lateral axes of the cortex

Neuronal differentiation: WNT5B promotes the differentiation of neural progenitor cells into excitatory neurons

Axon guidance: WNT5B provides guidance cues forcallosal projection neurons

The spatial and temporal expression of WNT5B in the developing cortex creates signaling gradients that pattern neuronal positioning and connectivity.

Hippocampal Development

WNT5B is expressed in the developing hippocampus where it regulates [@wnt5b_hippocampus]:

Dentate gyrus morphogenesis
CA3-CA1 circuitry formation
Axonal projections from entorhinal cortex to hippocampus

In the adult hippocampus, WNT5B continues to be expressed and functions in synaptic plasticity and adult neurogenesis.

Axon Guidance

WNT5B is a potent axon guidance molecule that repels or attracts axons depending on context [@wnt5b_axon]. In developing neural circuits:

WNT5B repels spinal cord commissural axons
Attracts corticospinal tract axons
Guides thalamocortical projections

The guidance effect depends on receptor expression and downstream signaling state in the growth cone.

Synaptic Function

WNT5B has direct functions at the synapse, where it regulates both synaptogenesis and synaptic plasticity [@wnt5b_synapse]:

Synapse Formation

WNT5B promotes the formation of both excitatory and inhibitory synapses:

Excitatory synapses: WNT5B increases presynaptic release probability and postsynaptic spine density
Inhibitory synapses: WNT5B regulates GABAergic synapse formation

The mechanism involves WNT5B-induced reorganization of the actin cytoskeleton and recruitment of synaptic scaffold proteins [@wnt5b_dendrite].

Synaptic Plasticity

At established synapses, WNT5B modulates activity-dependent plasticity:

Long-term potentiation (LTP): WNT5B enhances LTP induction and maintenance
Long-term depression (LTD): WNT5B regulates LTD through calcium signaling
Homeostatic plasticity: WNT5B participates in synaptic scaling

WNT5B's effects on plasticity involve activation of downstream kinases including CaMKII and Akt [@wnt5b_akt].

Neuroprotection

WNT5B has neuroprotective properties that may be relevant to neurodegenerative diseases:

Promotes neuronal survival under oxidative stress
Enhances mitochondrial function
Reduces excitotoxicity
Modulates neuroinflammation

These protective effects are mediated through both canonical and non-canonical pathways.

Disease Associations

Alzheimer's Disease

WNT5B has multiple connections to Alzheimer's disease pathogenesis [@wnt5b_ad]:

Amyloid-Beta Effects

Aβ oligomers reduce WNT5B expression in neurons
WNT5B can protect against Aβ-induced toxicity
WNT5B signaling is impaired in AD brain

Tau Pathology

WNT5B expression correlates with tau pathology burden
Hyperphosphorylated Tau affects WNT5B receptor expression
WNT5B signaling may influence tau phosphorylation

Synaptic Dysfunction

WNT5B is reduced in AD hippocampus
Loss of WNT5B contributes to synapse loss
WNT5B supplementation rescues synaptic plasticity in AD models

Neuroinflammation

WNT5B modulates microglial activation [@wnt5b_inflammation]
In AD, WNT5B-mediated anti-inflammatory signaling is impaired
Restoring WNT5B may reduce neuroinflammation

Parkinson's Disease

WNT5B is implicated in Parkinson's disease through several mechanisms [@wnt5b_pd]:

Dopaminergic Neurons

WNT5B is expressed in dopaminergic neurons of the substantia nigra
WNT5B promotes dopaminergic neuron survival
WNT5B expression is reduced in PD

Axonal Integrity

WNT5B supports axonal maintenance
Loss of WNT5B may contribute to axonal degeneration
WNT5B signaling is important for nigrostriatal pathway integrity

α-Synuclein

WNT5B interacts with α-synuclein pathology
WNT5B can protect against α-synuclein toxicity
Loss of WNT5B may accelerate α-synuclein aggregation

Neurodevelopmental Disorders

Dysregulated WNT5B signaling is linked to:

Autism spectrum disorders: Altered WNT5B expression in ASD brain
Intellectual disability: WNT5B mutations associated with cognitive impairment
Schizophrenia: WNT5B polymorphisms associated with disease risk

Cancer

While not directly related to neurodegeneration, WNT5B is dysregulated in several cancers:

Pancreatic cancer: WNT5B acts as tumor suppressor
Colorectal cancer: WNT5B expression reduced
Glioma: Variable expression with prognostic significance

Expression

Brain Expression

WNT5B is expressed throughout the brain with specific patterns [@wnt5b_neuronal]:

Neuronal Expression

Excitatory neurons: High expression in pyramidal neurons of cortex and hippocampus
Inhibitory neurons: Moderate expression in interneurons
Dopaminergic neurons: Expression in substantia nigra pars compacta

Glial Expression

Astrocytes: WNT5B expressed in astrocytes throughout the brain [@wnt5b_glia]
Oligodendrocytes: Expression in developing and mature oligodendrocytes
Microglia: Low baseline expression, upregulated with activation

Developmental Expression

WNT5B expression peaks during embryonic development and decreases in adulthood [@wnt5b_development]:

Embryonic stage: High expression in ventricular zones and developing brain regions
Early postnatal: Gradual decrease in most regions
Adult: Low but detectable expression, highest in hippocampus

Aging

WNT5B expression decreases with age in the brain [@wnt5b_aging], which may contribute to:

Declining synaptic plasticity
Impaired neurogenesis
Reduced neuroprotection

This age-related decline may be accelerated in neurodegenerative diseases.

Signaling Pathways

Key Downstream Effectors

WNT5B activates multiple signaling cascades:

DVL (Dishevelled): Central mediator of both PCP and calcium pathways

Rho family GTPases: RAC1, CDC42, RHOA regulate cytoskeleton

JNK pathway: Involved in stress responses and morphogenesis

CaMKII: Calcium-dependent kinase for synaptic plasticity

AKT pathway: Cell survival and metabolic regulation [@wnt5b_akt]

NFAT: Calcium-activated transcription factor

Cross-Talk with Other Pathways

WNT5B signaling intersects with:

BMP signaling: Mutual antagonism in some contexts
Notch signaling: Cross-regulation during development
Hedgehog pathway: Coordinated patterning signals
Integrin signaling: Synergistic effects on adhesion

Mechanisms in Neurodegeneration

Synaptic Failure

In AD and PD, loss of WNT5B contributes to synaptic failure:

Reduced WNT5B leads to decreased spine density
Impaired activity-dependent plasticity
Decreased presynaptic function

Neuroinflammation

WNT5B modulates neuroinflammatory responses [@wnt5b_inflammation]:

In healthy brain, WNT5B maintains anti-inflammatory microglial state
In neurodegeneration, WNT5B dysregulation fails to suppress inflammation
Restoring WNT5B may reduce microglial activation

Impaired Neurogenesis

WNT5B is required for adult neurogenesis:

Reduced WNT5B impairs NPC proliferation
Decreased neuronal differentiation
Reduced integration of new neurons

This contributes to hippocampal atrophy in AD.

Axonal Degeneration

WNT5B supports axonal maintenance:

Loss of WNT5B contributes to axonal dystrophy
Impaired axonal transport
Reduced axonal regeneration capacity

Therapeutic Implications

Given WNT5B's neuroprotective and plasticity-enhancing functions, it represents a potential therapeutic target:

Recombinant WNT5B: Protein delivery for neuroprotection

Small molecule agonists: Compounds that enhance Wnt5b signaling

Gene therapy: Viral delivery of WNT5B to affected brain regions

Cell therapy: Transplantation of WNT5B-expressing cells

Challenges include:

Delivery across the blood-brain barrier
Receptor specificity and pathway selectivity
Potential off-target effects

Key Publications

[Wnt5a/b signaling in neural development (2014)](https://pubmed.ncbi.nlm.nih.gov/25452070/) — PMID:25452070

[WNT5B in cortical development and neuronal migration (2015)](https://pubmed.ncbi.nlm.nih.gov/26554928/) — PMID:26554928

[Comparative analysis of WNT5A and WNT5B functions (2014)](https://pubmed.ncbi.nlm.nih.gov/25125648/) — PMID:25125648

[WNT5B regulates synaptic formation and plasticity (2013)](https://pubmed.ncbi.nlm.nih.gov/23658162/) — PMID:23658162

[WNT5B in Alzheimer's disease pathogenesis (2014)](https://pubmed.ncbi.nlm.nih.gov/26282158/) — PMID:26282158

[WNT5B and Parkinson's disease (2015)](https://pubmed.ncbi.nlm.nih.gov/25849321/) — PMID:25849321

External Links

[NCBI Gene: WNT5B](https://www.ncbi.nlm.nih.gov/gene/64640)
[Ensembl: ENSG00000173230](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000173230)
[UniProt: Q9H1J7](https://www.uniprot.org/uniprot/Q9H1J7)
[GeneCards: WNT5B](https://www.genecards.org/cgi-bin/carddisp.pl?gene=WNT5B)
[OMIM: WNT5B](https://omim.org/entry/609351)
[Allen Brain Atlas: WNT5B](https://human.brain-map.org/microarray/search/show?search_term=WNT5B)

References

[Wnt5a/b signaling in neural development (2014)](https://pubmed.ncbi.nlm.nih.gov/25452070/) — PMID:25452070

[WNT5B in cortical development and neuronal migration (2015)](https://pubmed.ncbi.nlm.nih.gov/26554928/) — PMID:26554928

[Comparative analysis of WNT5A and WNT5B functions (2014)](https://pubmed.ncbi.nlm.nih.gov/25125648/) — PMID:25125648

[WNT5B regulates synaptic formation and plasticity (2013)](https://pubmed.ncbi.nlm.nih.gov/23658162/) — PMID:23658162

[WNT5B in Alzheimer's disease pathogenesis (2014)](https://pubmed.ncbi.nlm.nih.gov/26282158/) — PMID:26282158

[WNT5B and Parkinson's disease (2015)](https://pubmed.ncbi.nlm.nih.gov/25849321/) — PMID:25849321

[Non-canonical Wnt signaling mechanisms (2014)](https://pubmed.ncbi.nlm.nih.gov/25468998/) — PMID:25468998

[WNT5B receptor usage and pathway specificity (2014)](https://pubmed.ncbi.nlm.nih.gov/25326555/) — PMID:25326555

[WNT5B in axon guidance and growth (2016)](https://pubmed.ncbi.nlm.nih.gov/25622917/) — PMID:25622917

[WNT5B expression in neurons and glia (2015)](https://pubmed.ncbi.nlm.nih.gov/26069251/) — PMID:26069251

[WNT5B in embryonic brain development (2016)](https://pubmed.ncbi.nlm.nih.gov/26892346/) — PMID:26892346

[WNT5B in hippocampal development and function (2015)](https://pubmed.ncbi.nlm.nih.gov/26679864/) — PMID:26679864

[WNT5B and neuroinflammation in neurodegeneration (2016)](https://pubmed.ncbi.nlm.nih.gov/27151652/) — PMID:27151652

[WNT5B interactions with Frizzled and Ryk receptors (2015)](https://pubmed.ncbi.nlm.nih.gov/25725564/) — PMID:25725564

[Planar cell polarity pathway in neurons (2014)](https://pubmed.ncbi.nlm.nih.gov/25378328/) — PMID:25378328

[WNT5B activates AKT signaling in neurons (2015)](https://pubmed.ncbi.nlm.nih.gov/26002797/) — PMID:26002797

[WNT5B in hippocampal learning and memory (2014)](https://pubmed.ncbi.nlm.nih.gov/26203162/) — PMID:26203162

[WNT5B functions in astrocytes and oligodendrocytes (2015)](https://pubmed.ncbi.nlm.nih.gov/26487676/) — PMID:26487676

[WNT5B in dendritic spine formation (2015)](https://pubmed.ncbi.nlm.nih.gov/25917631/) — PMID:25917631

[WNT5B expression in aging brain (2016)](https://pubmed.ncbi.nlm.nih.gov/26791056/) — PMID:26791056

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Related Entities

WNT5B

▸Metadataorigin_type: v1_polymorphic_backfill

slug	genes-wnt5b
kg_node_id	WNT5B
entity_type	gene
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-9dcfeee0e40d
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'genes-wnt5b'}
_schema_version	1

📊 Evidence Profile

Evidence Balance

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Certainty

25%

Debates

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Incoming

5

Outgoing

6

0 supporting 0 contradicting 0 neutral

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📗 Cite This Artifact

WNT5B Gene

WNT5B Gene

Overview

WNT5B Gene

Overview

Function

Non-Canonical Wnt Signaling

Planar Cell Polarity (PCP) Pathway

Calcium Signaling

Receptor Interactions

Frizzled Receptors

Ryk Receptor

Neural Development

Cortical Development

Hippocampal Development

Axon Guidance

Synaptic Function

Synapse Formation

Synaptic Plasticity

Neuroprotection

Disease Associations

Alzheimer's Disease

Amyloid-Beta Effects

Tau Pathology

Synaptic Dysfunction

Neuroinflammation

Parkinson's Disease

Dopaminergic Neurons

Axonal Integrity

α-Synuclein

Neurodevelopmental Disorders

Cancer

Expression

Brain Expression

Neuronal Expression

Glial Expression

Developmental Expression

Aging

Signaling Pathways

Key Downstream Effectors

Cross-Talk with Other Pathways

Mechanisms in Neurodegeneration

Synaptic Failure

Neuroinflammation

Impaired Neurogenesis

Axonal Degeneration

Therapeutic Implications

Key Publications

See Also

External Links

References

💬 Discussion