GDNF — Glial Cell Line-Derived Neurotrophic Factor
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">GDNF — Glial Cell Line-Derived Neurotrophic Factor</th>
</tr>
<tr>
<td class="label">Approach</td>
<td>Status</td>
</tr>
<tr>
<td class="label">AAV-GDNF gene therapy</td>
<td>Clinical trials</td>
</tr>
<tr>
<td class="label">GDNF protein infusion</td>
<td>Discontinued</td>
</tr>
<tr>
<td class="label">GFRα1 agonists</td>
<td>Preclinical</td>
</tr>
<tr>
<td class="label">Cell therapy</td>
<td>Preclinical</td>
</tr>
<tr>
<td class="label">Region</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">Substantia nigra</td>
<td>High</td>
</tr>
<tr>
<td class="label">Striatum</td>
<td>Medium-High</td>
</tr>
<tr>
<td class="label">Hippocampus</td>
<td>Medium</td>
</tr>
<tr>
<td class="label">Cortex</td>
<td>Low-Medium</td>
</tr>
<tr>
<td class="label">Cerebellum</td>
<td>Low</td>
</tr>
</table>
Pathway Diagram
...GDNF — Glial Cell Line-Derived Neurotrophic Factor
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">GDNF — Glial Cell Line-Derived Neurotrophic Factor</th>
</tr>
<tr>
<td class="label">Approach</td>
<td>Status</td>
</tr>
<tr>
<td class="label">AAV-GDNF gene therapy</td>
<td>Clinical trials</td>
</tr>
<tr>
<td class="label">GDNF protein infusion</td>
<td>Discontinued</td>
</tr>
<tr>
<td class="label">GFRα1 agonists</td>
<td>Preclinical</td>
</tr>
<tr>
<td class="label">Cell therapy</td>
<td>Preclinical</td>
</tr>
<tr>
<td class="label">Region</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">Substantia nigra</td>
<td>High</td>
</tr>
<tr>
<td class="label">Striatum</td>
<td>Medium-High</td>
</tr>
<tr>
<td class="label">Hippocampus</td>
<td>Medium</td>
</tr>
<tr>
<td class="label">Cortex</td>
<td>Low-Medium</td>
</tr>
<tr>
<td class="label">Cerebellum</td>
<td>Low</td>
</tr>
</table>
Pathway Diagram
Mermaid diagram (expand to render)
Introduction
Gdnf — Glial Cell Line Derived Neurotrophic Factor is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
```{.infobox .infobox-gene}
Gene Symbol: GDNF
Full Name: Glial Cell Line-Derived Neurotrophic Factor
Chromosomal Location: 5p13.2
NCBI Gene ID: 2678
OMIM: 600837
Ensembl ID: ENSG00000144121
UniProt: P39905 (GDNF_HUMAN)
Associated Diseases: Parkinson's Disease, Amyotrophic Lateral Sclerosis, Spinal Cord Injury
```
Overview
GDNF (Glial Cell Line-Derived Neurotrophic Factor) is a potent neurotrophic factor critical for dopaminergic neuron survival and peripheral nerve regeneration. [@kordower2000]
Function
Glial Cell Line-Derived Neurotrophic Factor (GDNF) is a potent neurotrophic factor that was originally discovered for its ability to promote the survival of dopaminergic [neurons](/entities/neurons). It belongs to the GDNF family ligands (GFLs), which includes GDNF, neurturin (NRTN), artemin (ARTN), persephin (PSPN), and neublastin (NRTN-like). [@bartus2017]
Normal Function
GDNF signals through a unique receptor complex: [@airaksinen2002]
- GFRα1 (GDNF Family Receptor Alpha 1) — primary GDNF-binding receptor
- RET (Rearranged during Transfection) — co-receptor with tyrosine kinase activity
This signaling complex activates multiple downstream pathways: [@ibez2007]
- PI3K/Akt pathway — promotes neuronal survival
- MAPK/ERK pathway — regulates differentiation and plasticity
- PLCγ pathway — modulates intracellular calcium
Expression Pattern
GDNF is expressed in:
- Striatum
- [Hippocampus](/brain-regions/hippocampus)
- Cerebral [cortex](/brain-regions/cortex)
- Spinal cord
- [Astrocytes](/entities/astrocytes) and Schwann cells
- Peripheral nervous system
GDNF is particularly important for:
- Development and maintenance of dopaminergic neurons
- Motor neuron survival
- Enteric nervous system development
- Kidney development (GDNF is essential for ureteric bud branching)
Disease Associations
Parkinson's Disease
GDNF is the most potent neurotrophic factor for dopaminergic neurons:
- Supports survival of substantia nigra pars compacta neurons
- Promotes neurite outgrowth and dopamine uptake
- Protects against 6-OHDA and MPTP toxicity
Clinical trials: Multiple clinical trials have tested GDNF delivery for PD:
- Intracerebral GDNF infusion (failed due to delivery issues)
- AAV-GDNF gene therapy (showed safety and promising efficacy)
- Continuous delivery methods under development
Challenges:
- GDNF does not cross the [blood-brain barrier](/entities/blood-brain-barrier)
- Requires direct brain delivery (intraparenchymal or intraventricular)
- Retrograde transport from striatum to substantia nigra
Amyotrophic Lateral Sclerosis (ALS)
GDNF supports:
- Motor neuron survival
- Neuromuscular junction maintenance
- Protection against excitotoxicity
Therapeutic potential: AAV-GDNF delivery to motor neurons shows promise in preclinical models.
Spinal Cord Injury
GDNF promotes:
- Motor neuron survival after injury
- Axonal regeneration
- Functional recovery in animal models
Therapeutic Targeting
Key Publications
GDNF: a potent neurotrophic factor for dopaminergic neurons - Nature. 1993. PMID: 7684372(https://pubmed.ncbi.nlm.nih.gov/7684372/)
AAV2-GDNF gene therapy for Parkinson's disease - Mol Ther. 2017. PMID: 28129144(https://pubmed.ncbi.nlm.nih.gov/28129144/)
GDNF and Parkinson's disease - Nat Rev Neurol. 2010. PMID: 20924411(https://pubmed.ncbi.nlm.nih.gov/20924411/)
Neurotrophic factors in ALS - Nat Rev Neurol. 2012. PMID: 22565201(https://pubmed.ncbi.nlm.nih.gov/22565201/)Cross-Links
- [GDNF Protein](/proteins/gdnf)
- [Parkinson's Disease](/diseases/parkinsons-disease)
- [Amyotrophic Lateral Sclerosis](/diseases/als)
- [Dopaminergic Neurons](/entities/dopaminergic-neurons)
- [Substantia Nigra](/brain-regions/substantia-nigra)
- [Dopaminergic Neurodegeneration](/mechanisms/dopaminergic-neurodegeneration)
External Links
- [GDNF Gene - NCBI Gene](https://www.ncbi.nlm.nih.gov/gene/2698)
- [GDNF Gene - OMIM](https://www.omim.org/entry/158025)
- [GDNF Protein - UniProt](https://www.uniprot.org/uniprot/P39905)
- [GDNF Expression - Allen Human Brain Atlas](https://human.brain-map.org/microarray/search/show?search_term=GDNF)
Background
The study of Gdnf — Glial Cell Line Derived Neurotrophic Factor 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.
Brain Atlas Resources
- [Allen Human Brain Atlas - gdnf Expression](https://human.brain-map.org/microarray/search/show?search_term=gdnf)
- [Allen Cell Type Atlas - gdnf](https://celltypes.brain-map.org/)
- [BrainSpan - gdnf Developmental Expression](https://brainspan.org/)
- [Allen Mouse Brain Atlas - gdnf](https://mouse.brain-map.org/)
Allen Brain Atlas Data
Gene Expression
GDNF (Glial Cell Line-Derived Neurotrophic Factor) expression patterns:
- Substantia nigra - High expression in dopaminergic neurons
- Hippocampus - Moderate expression in dentate gyrus
- Cerebral cortex - Low-moderate expression
- Striatum - Moderate expression
Single-Cell Expression
GDNF is expressed in:
- Dopaminergic neurons (TH+, SLC6A3+)
- Astrocytes (primary source)
- Certain neuronal populations
- Schwann cells (peripheral)
Brain Region Expression Levels
See Also
- [Genes Index](/genes)
- [GDNF Protein](/proteins/gdnf-protein)
- [Neurotrophin Signaling](/mechanisms/neurotrophin-signaling)
- [Parkinson's Disease](/diseases/parkinsons-disease)
- [Substantia Nigra](/cell-types/substantia-nigra)
- [Neuroprotection](/mechanisms/neuroprotection)
References
Lin LF, et al, GDNF: a potent neurotrophic factor for dopaminergic neurons of the substantia nigra (1993)
Kordower JH, et al, Neurodegeneration prevented by lentiviral vector delivery of GDNF in primate models of Parkinson's disease (2000)
Bartus RT, et al, Adeno-associated virus (AAV) gene therapy as a potential treatment for Parkinson's disease: long-term results (2017)
Airaksinen MS, Saarma M, The GDNF family: signalling, biological functions and therapeutic value (2002)
Ibáñez CF, Andressoo JO, Biology of GDNF and its receptors — from neural development to Parkinson's disease (2007)Pathway Diagram
The following diagram shows the key molecular relationships involving GDNF — Glial Cell Line-Derived Neurotrophic Factor discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)