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Long-term transgene expression in mouse neural progenitor cells modified with phiC31 integrase
Annahita Keravala1, Brandi K Ormerod, Theo D Palmer
1Department of Genetics, Stanford University School of Medicine, M-334, 300 Pasteur Drive, Stanford, CA 94305-5120, United States.
Journal of Neuroscience Methods
|July 9, 2008
Summary
The phiC31 integrase system enables stable gene expression in mouse neural progenitor cells (mNPCs). This non-viral method shows promise for gene therapies targeting neurodegenerative disorders.
Area of Science:
- Genetics
- Neuroscience
- Cell Biology
Background:
- Neural progenitor cells (NPCs) are crucial for neural development and repair.
- Gene/cell therapies offer potential treatments for neurodegenerative diseases.
- Stable and long-term transgene expression is essential for effective gene therapy.
Purpose of the Study:
- To evaluate the phiC31 integrase system for stable transgene expression in mouse neural progenitor cells (mNPCs).
- To assess the potential of this non-viral system for neural disease gene therapy applications.
Main Methods:
- Co-nucleofection of mNPCs with plasmids encoding luciferase and phiC31 integrase.
- Quantification of luciferase expression in live cells over 8 weeks.
- Detection of sequence-specific DNA integration using PCR.
- Culture of genetically modified NPCs under growth and differentiation conditions.
Main Results:
- Sustained luciferase expression was observed in mNPCs for up to 8 weeks.
- Sequence-specific integration of the transgene into a preferred pseudo attP site was confirmed.
- Stable transgene expression persisted in mNPCs and their differentiated progeny (neurons and astrocytes).
Conclusions:
- The phiC31 integrase system facilitates stable, long-term transgene expression in adult mNPCs.
- This system is a viable non-viral tool for genetic modification of neural progenitor cells.
- The phiC31 integrase system holds potential for developing gene/cell therapies for neurodegenerative disorders.
