Albumin-binding dendrimer-conjugated siRNA enables safe and effective gene silencing throughout the central nervous system.

Albumin-binding dendrimer-conjugated siRNA achieves durable, widespread gene silencing in the CNS with a single administration lasting up to six months.

• Why it matters: Effective delivery of siRNA to the CNS is crucial for treating genetic neurological disorders, but current methods face challenges in safety, efficiency, and duration of effect.
• What they did: Researchers developed an albumin-binding amphiphilic dendrimer conjugate (D-siRNA) and tested it in mice and rats, demonstrating broad, homogeneous delivery and sustained gene silencing after CSF or intrathecal injection.
• The result: D-siRNA proved safe, effective, and long-lasting, outperforming or matching existing delivery systems, and enabling potential clinical applications for durable gene silencing in the brain.