Myostatin exon 1 splicing enhancer sequence (MSTN ESE1)

The Myostatin (MSTN) exon 1 splicing enhancer sequence is a regulatory RNA element located within the first exon of the MSTN pre-mRNA. Myostatin, also known as Growth Differentiation Factor 8 (GDF-8), is a potent negative regulator of skeletal muscle growth (NCBI Gene ID: 2660). By targeting this specific splicing enhancer with antisense oligonucleotides (ASOs), researchers can induce exon skipping, which disrupts the reading frame or removes critical domains, ultimately reducing the production of functional myostatin protein (PubMed: 22303343). This therapeutic approach aims to promote muscle hypertrophy and increase muscle strength in patients with muscular dystrophies, sarcopenia, or cancer-related cachexia (PubMed: 25708850). Unlike systemic antibodies, targeting the pre-mRNA allows for potentially more durable or tissue-specific modulation of the myostatin pathway. Current development focuses on optimizing the chemistry of these oligonucleotides to improve muscle uptake and safety (Molecular Therapy, 2012).

Other names

MSTN exonic splicing enhancerMyostatin exon 1 ESEGrowth differentiation factor 8 exon 1 splicing enhancerGDF8 exon 1 ESE

Binding of antisense oligonucleotides to the exonic splicing enhancer sequence to block the recruitment of splicing factors, leading to exon skipping and subsequent reduction of functional myostatin protein expression.