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Efficient oligonucleotide delivery using the HVJ-liposome method in the central nervous system
K Yamada1, A Moriguchi, R Morishita
1Department of Geriatric Medicine, Osaka University Medical School, Suita, Japan.
The American Journal of Physiology
|November 1, 1996
Summary
The hemagglutinating virus of Japan (HVJ)-liposome vector efficiently delivers oligodeoxy-nucleotides (ODN) to the central nervous system (CNS). This method enhances ODN nuclear concentration and prolongs their presence, showing promise for gene delivery.
Area of Science:
- Neuroscience
- Molecular Biology
- Biotechnology
Background:
- Oligodeoxy-nucleotides (ODN) have therapeutic potential but face challenges in central nervous system (CNS) delivery.
- Efficient and targeted delivery of nucleic acids to the CNS is crucial for developing novel therapies.
Purpose of the Study:
- To evaluate the efficiency and intracellular fate of ODN delivered via a hemagglutinating virus of Japan (HVJ)-liposome vector in the CNS.
- To compare the HVJ-liposome method with conventional ODN delivery methods in vivo and in vitro.
Main Methods:
- Utilized fluorescein isothiocyanate (FITC)-labeled ODN complexed with HVJ-liposomes.
- Administered ODN via HVJ-liposomes in vitro to rat cerebellar granular cells.
- In vivo delivery involved infusions into the hypothalamus and lateral cerebroventricle.
Main Results:
- HVJ-liposome delivery resulted in prolonged nuclear fluorescence (>2 weeks) in vitro compared to ODN alone (3 days).
- In vivo, HVJ-liposome delivery led to higher concentrations and more persistent fluorescence in the hypothalamus and lateral cerebroventricle.
- Broader distribution of fluorescent cells and predominant nuclear localization were observed with the HVJ-liposome method.
Conclusions:
- The HVJ-liposome vector significantly enhances ODN half-life and nuclear concentration in the CNS.
- This method represents an efficient strategy for ODN transfer and holds promise for gene delivery applications in the CNS.