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Updated: May 1, 2026
Real-Time Fluorescent Measurement of Synaptic Functions in Models of Amyotrophic Lateral Sclerosis
Published on: July 16, 2021
Mutations in the Matrin 3 gene cause familial amyotrophic lateral sclerosis
Janel O Johnson1, Erik P Pioro2, Ashley Boehringer3
1Neuromuscular Diseases Research Unit, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, 35 Convent Drive, Bethesda, MD 20892, USA.
Abstract:
MATR3 is an RNA- and DNA-binding protein that interacts with TDP-43, a disease protein linked to amyotrophic lateral sclerosis (ALS) and frontotemporal dementia. Using exome sequencing, we identified mutations in MATR3 in ALS kindreds. We also observed MATR3 pathology in ALS-affected spinal cords with and without MATR3 mutations. Our data provide more evidence supporting the role of aberrant RNA processing in motor neuron degeneration.
Insights
Mutations in the MATR3 protein were found in families with amyotrophic lateral sclerosis (ALS). MATR3 pathology also appears in ALS spinal cords, suggesting a role in motor neuron diseases.
Area of Science:
- Neuroscience
- Genetics
- Molecular Biology
Background:
- TDP-43 is a protein implicated in amyotrophic lateral sclerosis (ALS) and frontotemporal dementia.
- MATR3 is an RNA- and DNA-binding protein known to interact with TDP-43.
Purpose of the Study:
- To investigate the role of MATR3 in the pathogenesis of ALS.
- To identify genetic links between MATR3 and ALS.
Main Methods:
- Exome sequencing was used to identify mutations in MATR3 in ALS patient kindreds.
- Immunohistochemical analysis was performed on spinal cord tissues from ALS patients.
Main Results:
- Mutations in MATR3 were identified in familial ALS cases.
- MATR3 protein aggregates and inclusions were observed in the spinal cords of ALS patients, irrespective of the presence of MATR3 mutations.
- These findings suggest MATR3 pathology is a feature of ALS.
Conclusions:
- Mutations in MATR3 are associated with ALS, highlighting its genetic contribution to the disease.
- MATR3 pathology in spinal cords indicates its involvement in motor neuron degeneration, potentially through aberrant RNA processing.
- These findings expand the understanding of the molecular mechanisms underlying ALS and related neurodegenerative disorders.
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