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Updated: Jun 8, 2026
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Lumbar Intrathecal Injection of Gene Therapy Vectors for Central Nervous System Targeting in Mice and Rats
Published on: May 16, 2025
Efficient CNS gene delivery by intravenous injection
Jean-Pierre Louboutin1, Alena A Chekmasova, Elena Marusich
1Department of Pathology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA. jplouboutin@hotmail.com
Nature Methods
|October 19, 2010
Summary
Recombinant simian virus 40-derived viral vectors (rSV40s) enable gene delivery to the central nervous system (CNS). Mannitol pretreatment significantly enhances rSV40s
Area of Science:
- Neuroscience
- Gene Therapy
- Viral Vector Technology
Background:
- Central nervous system (CNS) gene delivery is challenging.
- Simian virus 40 (SV40)-derived viral vectors (rSV40s) are potential tools for CNS gene therapy.
- Mannitol is a hyperosmotic agent that can alter biological barriers.
Purpose of the Study:
- To evaluate the efficacy of intravenous rSV40 administration for CNS gene delivery.
- To investigate the effect of mannitol pretreatment on rSV40-mediated CNS gene delivery.
Main Methods:
- Recombinant SV40-derived viral vectors (rSV40s) were administered intravenously to mice.
- Mice received either no pretreatment or intraperitoneal injection of mannitol prior to rSV40 administration.
- Transgene expression in the CNS was detected and quantified.
Main Results:
- Transgene-expressing cells, predominantly neurons, were found in the cortex and spinal cord.
- Prior intraperitoneal mannitol injection increased CNS gene delivery by tenfold.
- Intravenous rSV40s with mannitol pretreatment led to extensive transgene expression throughout the CNS.
Conclusions:
- Intravenous rSV40s are effective for delivering transgenes to the CNS.
- Mannitol pretreatment significantly enhances rSV40-mediated gene delivery to the CNS.
- This method holds promise for CNS gene therapy applications.
