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High-level gene transfer to the cornea using electroporation.
Kathleen Blair-Parks1, Bonnie C Weston, David A Dean
1Department of Microbiology and Immunology, College of Medicine, University of South Alabama, Mobile, AL 36688, USA.
The Journal of Gene Medicine
|February 6, 2002
Summary
Electroporation effectively transfers genes to the mouse cornea, achieving high expression levels across all cell layers without causing inflammation or trauma. This gene transfer method offers a safe and efficient approach for corneal applications.
Area of Science:
- Ophthalmology
- Molecular Biology
- Biotechnology
Background:
- Current corneal gene transfer methods lack high expression and safety.
- Electroporation is a proven gene transfer technique in other tissues.
Purpose of the Study:
- To quantitatively evaluate electroporation for gene transfer in the mouse cornea.
- To assess gene expression levels, safety, and inflammatory responses.
Main Methods:
- Mice corneas received plasmid injections (luciferase or GFP) followed by square-wave electric pulses.
- Gene expression was quantified, and trauma/inflammation were monitored via visual inspection and IL-6 measurement.
Main Results:
- Electroporation yielded nanogram levels of gene product, up to 1000-fold higher than DNA injection alone.
- Optimal expression at 200 V/cm showed no trauma or inflammation; higher strengths caused damage.
- Gene expression was rapid, sustained for 3 days, and detected in epithelial and stromal layers.
Conclusions:
- Electroporation is an excellent method for corneal gene transfer.
- Achieves high gene expression across multiple corneal cell layers.
- Demonstrates minimal inflammatory response and tissue damage, indicating a safe and useful technique.