What is it about?

Spinal and bulbar muscular atrophy (SBMA) is an X-linked and late-onset progressive neuromuscular disease caused by a CAG repeat (polyglutamine; polyQ) expansion in the androgen receptor (AR) gene caused by molecular mechanisms, which to the day remain elusive.

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Why is it important?

S-nitrosylation (SNO) is a redox-triggered post-translational modification. SNO can serve as a significant regulator of signal transduction pathways, much like phosphorylation. Also, aging and late-onset can result in abnormal SNO reactions as well as several neurodegenerative diseases. However, it is unknown how SNO contributes to SBMA pathogenesis and whether SNO represents a target for therapy in SBMA.

Perspectives

In our pilot study, we saw that it may not be possible to generate a model for each known mitochondrial disease variant. However, it will be invaluable trying generate three-dimensional muscle models for the most common mitochondrial variants.

Valeria Di Leo
Newcastle University

We found that S-nitrosylation could regulate AR genomic activity by affecting the ability of AR, and this function is altered in SBMA.

Dr. Yasumasa Hashimoto

Read the Original

This page is a summary of: Abstracts of the 17th UK Neuromuscular Translational Research Conference, 17th and 18th April 2024, Journal of Neuromuscular Diseases, April 2024, IOS Press,
DOI: 10.3233/jnd-249001.
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