Antisense-Mediated Gene Therapy Targeting DMPK Restores Cardiac Ion Channel Function and Electrical Stability in Myotonic Dystrophy Type 1
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The authors aimed to evaluate the efficacy of the antisense oligonucleotide IONIS-486178 in targeting mutant DMPK transcripts to restore cardiac function in myotonic dystrophy type 1 (DM1). Their findings demonstrate that treatment significantly reduced DMPK levels, corrected ion channel mis-splicing, and restored normal ionic currents and action potential characteristics in human induced pluripotent stem cell-derived cardiomyocytes, thereby reducing arrhythmogenic events. This study supports the potential of antisense-mediated gene therapy as a therapeutic strategy for preventing cardiac complications associated with DM1.
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