Intrathecal Vector Delivery in Juvenile Rats via Lumbar Cistern Injection

Our research focuses on the development of gene therapies for diseases that affect the central nervous system. As of December, 2023, the FDA has approved AAV-based gene therapies for a handful of genetic stores, including spinal muscular atrophy, Leber congenital amaurosis, Duchenne muscular dystrophy, and Hemophilia A and B.Many more treatments are currently being investigated in preclinical and clinical trials. Devising safe and effective interventions for genetic diseases requires leveraging a range of approaches from careful natural history studies in patients to preclinical work in tissue culture and animal models, and gene therapy is really only one of several technologies that are used for this purpose.

Many gene therapy experiments use neonatal or adult animals. Few evaluate treatments in juveniles, even though this represents a significant patient population for genetic disorders. So, for older children, body size and the immune system pose significant barriers to intravenous delivery of gene therapies.

Intrathecal delivery may overcome this, but we need appropriate models to test this hypothesis. This procedure that we have developed will allow us to evaluate the efficacy of this approach in juvenile rats.