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Updated: Feb 24, 2026

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Published on: December 17, 2021
Potential therapeutic targets in polyglutamine-mediated diseases
Masahisa Katsuno1, Hirohisa Watanabe, Masahiko Yamamoto
1Department of Neurology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
Polyglutamine diseases result from expanded CAG repeats, leading to neurodegeneration. Therapies targeting mutant protein accumulation show promise for these inherited disorders.
Area of Science:
- Neuroscience
- Genetics
- Molecular Biology
Background:
- Polyglutamine diseases are inherited neurodegenerative disorders.
- Caused by expanded CAG trinucleotide repeats in disease genes.
- Nine known diseases include Huntington's disease and spinocerebellar ataxias.
Purpose of the Study:
- To review the current status of therapy development for polyglutamine diseases.
- To discuss future perspectives for treating these neurodegenerative conditions.
Main Methods:
- Review of existing literature on polyglutamine diseases and current therapies.
- Analysis of molecular pathophysiology and therapeutic targets.
Main Results:
- Shared molecular pathophysiology involves mutant protein aggregation and cellular dysfunction (transcriptional regulation, axonal transport).
- Intraneuronal accumulation of mutant protein is a key therapeutic target.
- Therapies have shown beneficial effects in animal models.
Conclusions:
- Developing disease-modifying therapies is crucial for polyglutamine diseases.
- Targeting mutant protein accumulation and cellular dysfunction is essential.
- Further research and development hold promise for effective treatments.
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