Fixing one cryptic splice event in UNC13A restores synaptic function lost with TDP-43
- Loss of nuclear TDP-43, the hallmark of ALS and FTD, leaves neurons structurally intact but with a marked breakdown in synaptic communication.
- Splice-switching antisense oligonucleotides that correct a single cryptic UNC13A event worked in human cortical and spinal motor neurons and in a humanised mouse model.
- Correction restored vesicle release and network synchrony in human neurons, pointing to UNC13A as a genetically supported target for most TDP-43 pathology.
💡 Points Based on the abstract
This is about as clean as target validation gets: one cryptic exon, one rescue, with human genetics behind it. The open question is dose-response in vivo: how much correction is enough, how long ASO effect lasts in the spinal cord, and whether rescue of release translates to survival. I would want the humanised mouse to show a functional readout beyond splicing before calling it a clinical path.
📄 Paper · Nature ↗ UNC13A splice correction rescues synaptic dysfunction induced by TDP-43 loss