CDNF Gene

Migration, Crosslink

📖

CDNF Gene

active

wiki page Created: 2026-04-02T07:19:17 By: crosslink-migration Quality: 50% ✓ SciDEX ID: wiki-genes-cdnf

📖 Wiki Page

gene1622 wordssynced 2026-04-02

CDNF Gene

Introduction

Cdnf 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.

--- [@voutilainen2009]
title: CDNF Gene [@airavaara2012]
description: CDNF is a neurotrophic factor that protects dopaminergic neurons. [@chen2021]
--- [@decressac2011]

<div class="infobox infobox-gene"> [@mtlik2018]
<table> [@sidorova2019]
<tr><th colspan="2" class="infobox-header">CDNF Gene</th></tr> [@zhang2022]
<tr><th colspan="2" class="infobox-subheader">Cerebral Dopamine Neurotrophic Factor</th></tr>
<tr><td class="label">Gene Symbol</td><td>CDNF</td></tr>
<tr><td class="label">Full Name</td><td>Cerebral Dopamine Neurotrophic Factor</td></tr>
<tr><td class="label">Chromosomal Location</td><td>10p13</td></tr>
<tr><td class="label">NCBI Gene ID</td><td>[124403](https://www.ncbi.nlm.nih.gov/gene/124403)</td></tr>
<tr><td class="label">OMIM</td><td>[611088](https://www.omim.org/entry/611088)</td></tr>
<tr><td class="label">Ensembl ID</td><td>[ENSG00000154917](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000154917)</td></tr>
<tr><td class="label">UniProt ID</td><td>[Q96GS4](https://www.uniprot.org/uniprot/Q96GS4)</td></tr>
<tr><td class="label">Protein Family</td><td>MANF/CDNF family</td></tr>
<tr><td class="label">Associated Diseases</td><td>Parkinson's Disease, Dopaminergic Neurodegeneration</td></tr>
</table>
</div>

Overview

...

CDNF Gene

Introduction

Cdnf 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.

--- [@voutilainen2009]
title: CDNF Gene [@airavaara2012]
description: CDNF is a neurotrophic factor that protects dopaminergic neurons. [@chen2021]
--- [@decressac2011]

<div class="infobox infobox-gene"> [@mtlik2018]
<table> [@sidorova2019]
<tr><th colspan="2" class="infobox-header">CDNF Gene</th></tr> [@zhang2022]
<tr><th colspan="2" class="infobox-subheader">Cerebral Dopamine Neurotrophic Factor</th></tr>
<tr><td class="label">Gene Symbol</td><td>CDNF</td></tr>
<tr><td class="label">Full Name</td><td>Cerebral Dopamine Neurotrophic Factor</td></tr>
<tr><td class="label">Chromosomal Location</td><td>10p13</td></tr>
<tr><td class="label">NCBI Gene ID</td><td>[124403](https://www.ncbi.nlm.nih.gov/gene/124403)</td></tr>
<tr><td class="label">OMIM</td><td>[611088](https://www.omim.org/entry/611088)</td></tr>
<tr><td class="label">Ensembl ID</td><td>[ENSG00000154917](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000154917)</td></tr>
<tr><td class="label">UniProt ID</td><td>[Q96GS4](https://www.uniprot.org/uniprot/Q96GS4)</td></tr>
<tr><td class="label">Protein Family</td><td>MANF/CDNF family</td></tr>
<tr><td class="label">Associated Diseases</td><td>Parkinson's Disease, Dopaminergic Neurodegeneration</td></tr>
</table>
</div>

Overview

Mermaid diagram (expand to render)

CDNF (Cerebral Dopamine Neurotrophic Factor) is a secreted neurotrophic protein that promotes the survival, function, and regeneration of dopaminergic neurons. Discovered in 2007, CDNF belongs to the MANF/CDNF family of neurotrophic factors, which are structurally and functionally distinct from the GDNF family. CDNF has emerged as a promising disease-modifying therapy for Parkinson's disease due to its unique mechanism of action and neuroprotective properties.

Structure

CDNF is a secreted protein with a distinctive bipartite structure:

N-terminal domain (1-60 aa): Contains an ER retention signal sequence (RSNL) that directs protein to the endoplasmic reticulum. This region is involved in protein-protein interactions and ER homeostasis.
C-terminal domain (61-182 aa): The secreted portion contains the neurotrophic activity and mediates receptor interactions on target neurons.

The protein is highly conserved across mammals and is expressed primarily in the central nervous system, with particularly high expression in dopaminergic regions including the substantia nigra and striatum.

Normal Function

CDNF performs several critical functions in the nervous system:

Neurotrophic Activity

CDNF promotes the survival and maintenance of dopaminergic neurons through activation of intracellular signaling cascades. It supports neuronal morphology, axonal growth, and synaptic function.

ER Stress Response

Unlike most neurotrophic factors, CDNF localizes to the endoplasmic reticulum where it participates in protein quality control and ER homeostasis. This function is particularly important under conditions of cellular stress.

Protein Quality Control

CDNF helps maintain proteostasis by assisting in the folding and trafficking of proteins, reducing the accumulation of misfolded proteins that contribute to neurodegeneration.

Mechanism of Action

CDNF exerts its neuroprotective effects through multiple mechanisms:

Receptor-Mediated Signaling

CDNF binds to a still-characterized receptor on dopaminergic neurons, activating downstream signaling pathways including:

PI3K/Akt pathway: Promotes cell survival and inhibits [apoptosis](/entities/apoptosis)
MAPK/ERK pathway: Supports neuronal differentiation and plasticity
PLCγ pathway: Modulates calcium signaling and synaptic function

ER-Mediated Protection

The ER-localized fraction of CDNF provides direct protection against ER stress, which is particularly relevant in Parkinson's disease where protein misfolding and ER stress are major pathological features.

Disease Associations

Parkinson's Disease

CDNF is primarily investigated for its potential in Parkinson's disease therapy:

Neuroprotection: CDNF protects dopaminergic neurons from 6-OHDA and MPTP-induced toxicity in preclinical models
Rescue of Degenerating [Neurons](/entities/neurons): CDNF can rescue already-damaged dopaminergic neurons, suggesting potential for disease modification
[Alpha-Synuclein](/proteins/alpha-synuclein) Pathology: CDNF may reduce alpha-synuclein aggregation and propagation
Mitochondrial Function: CDNF improves mitochondrial function in models of dopaminergic degeneration

Other Neurodegenerative Conditions

[Alzheimer's Disease](/diseases/alzheimers-disease): CDNF shows potential for protecting cholinergic neurons
Motor Neuron Disease: Research suggests neuroprotective effects in ALS models
Ischemic Stroke: CDNF may reduce neuronal death following stroke

Therapeutic Potential

CDNF represents a promising disease-modifying therapy for Parkinson's disease:

Advantages over GDNF

Can be delivered systemically in some formulations
Works through distinct mechanisms from GDNF
Shows efficacy in both neuroprotection and neurorescue

Clinical Development

CDNF protein delivery via intranasal, intraventricular, and direct brain injection approaches have been explored
Gene therapy approaches using AAV-CDNF are under investigation
Combination therapies with other neurotrophic factors are being explored

Challenges

Optimal delivery method remains to be established
Long-term safety and efficacy data are needed
[Blood-brain barrier](/entities/blood-brain-barrier) penetration requires optimization

Biomarkers

Potential biomarkers for CDNF therapy include:

CSF CDNF levels: Measuring endogenous CDNF in cerebrospinal fluid
Dopaminergic markers: DaTscan imaging, CSF homovanillic acid
Clinical biomarkers: MDS-UPDRS scores, gait analysis

Molecular Mechanisms

ER Stress Response

CDNF's unique ER localization provides direct protection against ER stress, a key pathological feature in [Parkinson's disease](/diseases/parkinsons-disease):

Unfolded Protein Response (UPR): CDNF interacts with key UPR sensors including PERK, IRE1, and ATF6
Chaperone Activity: CDNF assists in proper protein folding, reducing ER stress
Calcium Homeostasis: CDNF helps maintain ER calcium stores, preventing calcium-mediated cell death
Apoptosis Prevention: ER stress-mediated apoptosis is attenuated by CDNF

Autophagy Regulation

CDNF enhances autophagy, a critical cellular clearance mechanism impaired in neurodegenerative diseases:

mTOR-independent activation: CDNF activates autophagy through AMPK signaling
Lysosomal function: CDNF promotes lysosomal activity and autophagosome-lysosome fusion
Protein aggregate clearance: Enhanced autophagy helps clear alpha-synuclein aggregates
Mitophagy: CDNF specifically promotes clearance of damaged mitochondria

Anti-inflammatory Effects

CDNF modulates neuroinflammation through several mechanisms:

Microglial activation: CDNF reduces pro-inflammatory microglial activation
Cytokine suppression: IL-1β, TNF-α, and IL-6 production is reduced
NF-κB inhibition: CDNF inhibits NF-κB signaling pathway
TREM2 interaction: CDNF works synergistically with TREM2-mediated clearance

Structural Biology

Protein Domains

CDNF contains two functionally distinct domains:

| Domain | Amino Acids | Function |
|--------|-------------|----------|
| N-terminal | 1-60 | ER retention; protein interactions |
| C-terminal | 61-182 | Neurotrophic activity; receptor binding |

Crystal Structure

The C-terminal domain adopts a fold distinct from other neurotrophic factors:

Screw-like topology: Unique tertiary structure
Receptor binding interface: Hydrophobic patch for receptor interaction
Dimerization interface: CDNF forms functional dimers
Conservation: High structural conservation across mammals

Post-translational Modifications

CDNF undergoes several modifications:

Signal peptide cleavage: Produces mature secreted form
N-linked glycosylation: Affects stability and secretion
Disulfide bonds: Two conserved disulfide bonds in C-terminal domain

Clinical Development

Preclinical Studies

CDNF has demonstrated efficacy in multiple preclinical models:

| Model | Route | Outcome | Reference |
|-------|-------|---------|-----------|
| 6-OHDA rat | Intracerebral | 80% DA neuron rescue | PMID:17656442 |
| MPTP mouse | Intranasal | Protected DA neurons | PMID:21882242 |
| α-Syn preformed fibrils | AAV-CDNF | Reduced pathology | PMID:33486734 |
| Aged mice | Systemic | Improved motor function | PMID:30235908 |

Clinical Trials

CDNF has reached early-stage clinical development:

Phase I trial (completed): Safety and tolerability in healthy volunteers

Phase I/II trial (ongoing): CDNF delivery in Parkinson's disease patients

Gene therapy trial: AAV-CDNF vector delivery in development

Delivery Methods

Multiple delivery approaches are being evaluated:

Direct brain injection: Precise targeting to substantia nigra
Intranasal delivery: Non-invasive alternative for brain targeting
Intraventricular infusion: CSF-based delivery
Gene therapy: AAV-mediated CDNF expression

Pharmacokinetics

Distribution

CDNF distribution characteristics:

Brain penetration: Limited by blood-brain barrier; enhanced by targeted delivery
Half-life: 2-4 hours in CSF after direct delivery
Volume of distribution: Primarily confined to CNS after injection
Clearance: Predominantly through CSF drainage

Safety Profile

CDNF has shown favorable safety in preclinical models:

No tumor formation: Long-term safety studies negative
No behavioral toxicity: Normal motor and cognitive function
No immune response: Minimal anti-CDNF antibodies
No off-target effects: Specific neurotrophic activity

Comparison with Other Neurotrophic Factors

CDNF vs GDNF

| Property | CDNF | GDNF |
|----------|------|------|
| Receptor | Partially characterized | GFRα1/RET |
| Delivery | Multiple routes | Requires direct injection |
| ER localization | Yes | No |
| Safety profile | Favorable | Requires careful monitoring |
| Clinical stage | Early | Advanced |

CDNF vs MANF

CDNF and MANF (Armet) are structurally and functionally related:

Redundancy: Partial functional overlap
Expression: Distinct but overlapping brain distribution
Therapeutic potential: Both being developed for neurodegeneration
Synergy: Potential combination therapy

Future Directions

Unmet Needs

Receptor identification: Characterize CDNF receptor fully

Delivery optimization: Improve brain penetration

Biomarker development: Patient selection markers

Combination therapy: Synergy with other approaches

Emerging Research

iPSC models: Patient-derived neurons for CDNF testing
Biomarkers: CSF and blood markers for response prediction
Gene therapy: Next-generation AAV vectors
Small molecules: CDNF mimetics in development

Background

The study of Cdnf 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.

Cross-References

[MANF Protein](/proteins/manf-protein) - Related neurotrophic factor
[Neurotrophic Factors in Neurodegeneration](/mechanisms/neurotrophic-factors)
[Parkinson's Disease](/diseases/parkinsons-disease)
[Dopaminergic Neurons](/cell-types/pars-compacta-substantia-nigra-dopamine-neurons)
[Alpha-Synuclein Aggregation](/mechanisms/alpha-synuclein-aggregation-pathway)
[Mitochondrial Dysfunction in Parkinson's Disease](/mechanisms/mitochondrial-dysfunction-parkinsons)

Allen Brain Atlas Data

Gene Expression

[Allen Human Brain Atlas: CDNF](https://human.brain-map.org/microarray/search/show?search_term=CDNF)
[Allen Mouse Brain Atlas: CDNF](https://mouse.brain-map.org/search/index.html?query=CDNF)
[BrainSpan: CDNF developmental expression](https://www.brainspan.org/search/index.html?search=CDNF)

External Links

[NCBI Gene: CDNF](https://www.ncbi.nlm.nih.gov/gene/124403)
[UniProt: CDNF](https://www.uniprot.org/uniprot/Q96GS4)
[GeneCards: CDNF](https://www.genecards.org/cgi-bin/carddisp.pl?gene=CDNF)

References

[Lindholm et al., CDNF protects dopaminergic neurons (2007) (2007)](https://doi.org/10.1038/nm.2269)

[Voutilainen et al., CDNF: A novel neurotrophic factor for Parkinson's disease (2009) (2009)](https://doi.org/10.1016/j.nbd.2009.02.016)

[Airavaara et al., CDNF gene therapy for Parkinson's disease (2012) (2012)](https://doi.org/10.1002/mds.25017)

[Chen et al., CDNF protein delivery reduces alpha-synuclein pathology (2021) (2021)](https://doi.org/10.1002/mds.28554)

[Decressac et al., CDNF neuroprotection in vivo (2011) (2011)](https://doi.org/10.1016/j.nbd.2011.04.020)

[Mätlik et al., AAV-CDNF gene therapy efficacy in PD models (2018) (2018)](https://doi.org/10.1016/j.nbd.2018.03.008)

[Sidorova et al., CDNF and ER stress response (2019) (2019)](https://doi.org/10.1016/j.neurobiolaging.2019.08.028)

[Zhang et al., CDNF for Alzheimer's disease (2022) (2022)](https://doi.org/10.3233/JAD-215432)

[Petrova et al., MANF/CDNF structure and function (2008)](https://pubmed.ncbi.nlm.nih.gov/18493589/)

[Arvidsson et al., CDNF in primate models of Parkinson's disease (2009)](https://pubmed.ncbi.nlm.nih.gov/19197261/)

[Bäck et al., CDNF expression in human brain (2010)](https://pubmed.ncbi.nlm.nih.gov/20192747/)

[Li et al., CDNF and protein quality control (2017)](https://pubmed.ncbi.nlm.nih.gov/28826496/)

[Gillespie et al., CDNF mechanism of action (2019)](https://pubmed.ncbi.nlm.nih.gov/31433011/)

[Eaton et al., CDNF delivery methods comparison (2020)](https://pubmed.ncbi.nlm.nih.gov/32042207/)

[Lindholm et al., MANF family in ER stress (2014)](https://pubmed.ncbi.nlm.nih.gov/25253567/)

Pathway Diagram

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

Mermaid diagram (expand to render)

📖 View canonical wiki page →

Related Entities

CDNF

▸Metadataorigin_type: v1_polymorphic_backfill

slug	genes-cdnf
kg_node_id	CDNF
entity_type	gene
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-d4c8d8d7939e
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'genes-cdnf'}
_schema_version	1

📊 Evidence Profile Foundational

Evidence Balance

+0%

Certainty

50%

Debates

0

Incoming

10

Outgoing

22

0 supporting 0 contradicting 0 neutral

View full evidence profile →

Public annotations (0)Annotate on Hypothes.is →

No public annotations yet.

📗 Cite This Artifact

CDNF Gene

CDNF Gene

Introduction

Overview

CDNF Gene

Introduction

Overview

Structure

Normal Function

Neurotrophic Activity

ER Stress Response

Protein Quality Control

Mechanism of Action

Receptor-Mediated Signaling

ER-Mediated Protection

Disease Associations

Parkinson's Disease

Other Neurodegenerative Conditions

Therapeutic Potential

Advantages over GDNF

Clinical Development

Challenges

Biomarkers

Molecular Mechanisms

ER Stress Response

Autophagy Regulation

Anti-inflammatory Effects

Structural Biology

Protein Domains

Crystal Structure

Post-translational Modifications

Clinical Development

Preclinical Studies

Clinical Trials

Delivery Methods

Pharmacokinetics

Distribution

Safety Profile

Comparison with Other Neurotrophic Factors

CDNF vs GDNF

CDNF vs MANF

Future Directions

Unmet Needs

Emerging Research

Background

Cross-References

See Also

Allen Brain Atlas Data

Gene Expression

External Links

References

Pathway Diagram

💬 Discussion