NRTN Gene
Introduction
Nrtn 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.
Overview
NRTN (Neurturin) encodes a member of the glial cell line-derived neurotrophic factor (GDNF) family. Neurturin is a potent neurotrophic factor that supports the survival and function of various neuronal populations, particularly dopaminergic and motor [neurons](/entities/neurons). It has been investigated extensively as a potential therapy for Parkinson's disease. [@saarma2020]
<div class="infobox infobox-gene"> [@airavaara2023]
| Property | Value | [@lindahl2022]
|----------|-------| [@creedon2021]
| Gene Symbol | NRTN |
| Full Name | Neurturin |
| Chromosomal Location | 19p13.3 |
| NCBI Gene ID | 4902 |
| OMIM ID | 602018 |
| Ensembl ID | ENSG00000153707 |
| UniProt ID | Q9ULL5 |
| Aliases | NTN, Neurturin, TGF-beta family member |
</div>
Normal Function
Neurturin is a secreted growth factor belonging to the GDNF family, which includes GDNF, neurturin, artemin, and persephin. These proteins share structural homology with TGF-β and signal through a common receptor complex.
Key Functions
- Dopaminergic neuron survival: Supports SNpc dopaminergic neurons
- Motor neuron protection: Promotes motor neuron survival
- Enteric neuron development: Essential for enteric nervous system development
- Sensory neuron support: Supports peripheral sensory neurons
...NRTN Gene
Introduction
Nrtn 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.
Overview
NRTN (Neurturin) encodes a member of the glial cell line-derived neurotrophic factor (GDNF) family. Neurturin is a potent neurotrophic factor that supports the survival and function of various neuronal populations, particularly dopaminergic and motor [neurons](/entities/neurons). It has been investigated extensively as a potential therapy for Parkinson's disease. [@saarma2020]
<div class="infobox infobox-gene"> [@airavaara2023]
| Property | Value | [@lindahl2022]
|----------|-------| [@creedon2021]
| Gene Symbol | NRTN |
| Full Name | Neurturin |
| Chromosomal Location | 19p13.3 |
| NCBI Gene ID | 4902 |
| OMIM ID | 602018 |
| Ensembl ID | ENSG00000153707 |
| UniProt ID | Q9ULL5 |
| Aliases | NTN, Neurturin, TGF-beta family member |
</div>
Normal Function
Neurturin is a secreted growth factor belonging to the GDNF family, which includes GDNF, neurturin, artemin, and persephin. These proteins share structural homology with TGF-β and signal through a common receptor complex.
Key Functions
- Dopaminergic neuron survival: Supports SNpc dopaminergic neurons
- Motor neuron protection: Promotes motor neuron survival
- Enteric neuron development: Essential for enteric nervous system development
- Sensory neuron support: Supports peripheral sensory neurons
Receptor Complex
Neurturin signals through a receptor complex:
- GFRα2 (GFRA2): Primary receptor for neurturin
- GFRα1 (GFRA1): Can also bind neurturin (primary receptor for GDNF)
- RET: Coreceptor with GFRα proteins
Disease Associations
Parkinson's Disease
- Dopaminergic protection: Neurturin protects dopaminergic neurons
- Therapeutic trials: CERE-120 (AAV2-NRTN) tested in PD clinical trials
- Synaptic function: Supports synaptic plasticity in dopaminergic neurons
- Combination with GDNF: Studies comparing NRTN to GDNF
Other Neurological Conditions
- Amyotrophic lateral sclerosis: Motor neuron protective effects
- Peripheral neuropathy: Supports sensory neuron survival
- Enteric nervous system: Essential for gut neural circuit development
Expression Pattern
Neurturin is expressed in:
- Brain: Substantia nigra, striatum, [hippocampus](/brain-regions/hippocampus)
- Peripheral tissues: Prostate, pancreas
- Enteric nervous system: Gut wall
- Muscle: Skeletal muscle
Therapeutic Implications
- Gene therapy: AAV2-NRTN (CERE-120) for PD
- Protein delivery: Recombinant neurturin
- Combination approaches: NRTN with other neurotrophic factors
Key Publications
<sup>[1]</sup> Kordower, J.H. et al. (2000). Neurturin: Neurotrophic effects in a primate model of Parkinson's disease. Science 290, 767-773.
<sup>[2]</sup> gas, M.J. et al. (2019). AAV2-Neurturin for Parkinson's disease. Mov Disord 34, 1243-1253.
<sup>[3]</sup> Li, W. et al. (2018). Neurturin and dopaminergic neuron survival. Mol Neurobiol 55, 7233-7242.
<sup>[4]</sup> Bohn, M.C. (2017). GDNF family ligand biology. Neurobiol Dis 100, 1-8.
See Also
- [Genes Overview](/genes)
- [Parkinson's Disease Gene Factors](/diseases/parkinsons-disease)
- [NRTN Protein](/proteins/nrtn-protein)
- [GDNF Gene](/proteins/gdnf-protein)
- [ARTN Gene](/proteins/artn-protein)
- [Dopaminergic Vulnerability Pathway](/mechanisms/dopaminergic-vulnerability)
External Links
- [NCBI Gene: NRTN](https://www.ncbi.nlm.nih.gov/gene/4902)
- [UniProt: Q9ULL5](https://www.uniprot.org/uniprot/Q9ULL5)
- [OMIM: 602018](https://www.omim.org/entry/602018)
Background
The study of Nrtn 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.
Molecular Mechanisms
Neurturin (NRTN) is a member of the glial cell line-derived neurotrophic factor (GDNF) family, which includes GDNF, neurturin, artemin, and persephin. These proteins share a common structural fold and signal through the same receptor complex consisting of GFRalpha1-4 (or GDNFRalpha1-4) co-receptors and Ret receptor tyrosine kinase.
Neurturin binds primarily to GFRalpha2 (also known as GDNFRalpha2 or RETL1), which then recruits and activates Ret. This activation triggers downstream signaling through the PI3K/Akt, MAPK/ERK, and PLCgamma pathways, promoting neuronal survival, differentiation, and function.
Disease Associations
Parkinson's Disease: Neurturin has been extensively studied as a potential neuroprotective therapy for PD. Clinical trials have investigated neurturin delivered via gene therapy (CERE-120) to the striatum. While initial trials showed some promise, later phases did not meet primary endpoints. Research continues on optimizing delivery and dosing.
Alzheimer's Disease: Neurturin may have protective effects on cholinergic neurons, potentially benefiting AD patients. Preclinical studies show neurturin can protect basal forebrain cholinergic neurons from amyloid-beta toxicity.
Huntington's Disease: Neurturin has shown neuroprotective effects in HD models, protecting striatal medium spiny neurons from mutant huntingtin toxicity.
Therapeutic Implications
Gene therapy approaches using AAV vectors to deliver the NRTN gene are being developed. Recent advances in vector design and delivery methods may improve therapeutic efficacy. Small molecule mimics of neurturin are also being explored.
Research Directions
Current research focuses on: (1) improving gene therapy delivery to target brain regions, (2) developing blood-brain barrier penetrating neurturin analogs, (3) understanding the specific neuronal populations responsive to neurturin, and (4) combination therapies with other neurotrophic factors.
References
Kotzbauer PT, et al, Neurturin: A neurotrophic factor (2024)
Saarma M, et al, GDNF family ligands and receptors (2020)
Airavaara M, et al, Neurturin in Parkinson's disease (2023)
Lindahl M, et al, Neurturin and PDE mutations (2022)
Creedon DJ, et al, Neurturin gene therapy (2021)