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Delivery of Therapeutic siRNA to the CNS Using Cationic and Anionic Liposomes
Published on: July 23, 2016
Lipid nanoparticles for mRNA delivery in brain via systemic administration
Dinglingge Cao1, Xucheng Hou1, Chang Wang1
1Icahn Genomics Institute, Precision Immunology Institute, Department of Immunology and Immunotherapy, Department of Oncological Sciences, Tisch Cancer Institute, Friedman Brain Institute, Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Researchers developed OS4T lipid nanoparticles (LNPs) for brain mRNA delivery. These LNPs significantly enhance mRNA translation in the brain, showing promise for treating glioblastoma and other central nervous system disorders.
Area of Science:
- Neuroscience
- Biotechnology
- Drug Delivery
Background:
- Systemic messenger RNA (mRNA) delivery to the brain is hindered by the blood-brain barrier.
- Targeting the central nervous system (CNS) requires innovative delivery platforms.
Purpose of the Study:
- To develop novel lipid nanoparticles (LNPs) for efficient systemic mRNA delivery to the brain.
- To evaluate the efficacy of these LNPs in preclinical models of brain disorders.
Main Methods:
- Incorporation of SR-57227, a serotonin 5-HT3 receptor ligand, into ionizable lipids for LNP formulation.
- Optimization of LNP formulation, identifying OS4T LNP as a lead candidate.
- Assessment of brain mRNA translation and therapeutic efficacy in an orthotopic glioblastoma (GBM) mouse model.
Main Results:
- OS4T LNPs demonstrated over a 50-fold increase in brain mRNA translation compared to Onpattro (DLin-MC3-DMA) after systemic administration.
- Engineered interleukin-12 mRNA-loaded OS4T LNPs significantly suppressed glioblastoma tumor growth.
- Treatment with OS4T LNPs led to improved overall survival in the GBM mouse model.
Conclusions:
- OS4T LNP is a highly effective platform for brain mRNA delivery via systemic administration.
- This LNP technology holds significant potential for treating glioblastoma and other CNS disorders.
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