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Published on: August 26, 2009
Light-directed delivery of nucleic acids
Sigurd Bøe1, Lina Prasmickaite, Birgit Engesæter
1Department of Tumor Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Montebello, Oslo, N-0310, Norway. Sigurd.Boe@rr-research.no
Abstract:
A major barrier within the field of non-viral gene therapy toward therapeutic strategies, e.g., tumor therapy, has been lack of appropriate specific delivery strategies to the intended target tissues or cells. In this chapter, we describe a protocol for light-directed delivery of nucleic acids through the use of photochemical internalization (PCI) technology. PCI is based on a photosensitizing compound that localizes to endocytic membranes. Upon illumination, the photosensitizing compound induces damage to the endocytic membranes, resulting in release of endocytosed material, i.e., nucleic acids into cytosol. The main benefit of the strategy described is the possibility for site-specific delivery of nucleic acids to a place of interest.
Insights
This study introduces photochemical internalization (PCI) for targeted gene therapy. PCI uses light to release nucleic acids into cells, overcoming delivery barriers for treatments like tumor therapy.
Area of Science:
- Biotechnology
- Molecular Biology
- Therapeutic Delivery
Background:
- Non-viral gene therapy faces challenges in specific delivery to target cells.
- Effective delivery is crucial for therapeutic strategies, including tumor therapy.
Purpose of the Study:
- To describe a protocol for light-directed delivery of nucleic acids.
- To address the limitations of current gene delivery methods.
Main Methods:
- Utilizing photochemical internalization (PCI) technology.
- Employing a photosensitizing compound that targets endocytic membranes.
- Using light to induce endocytic membrane damage and release nucleic acids into the cytosol.
Main Results:
- Demonstrated a method for site-specific delivery of nucleic acids.
- Enabled release of endocytosed nucleic acids into the cytosol.
Conclusions:
- Photochemical internalization offers a promising strategy for targeted gene delivery.
- This approach enhances the potential of non-viral gene therapy for various applications.
