Comparison of HIV-1 and EIAV-based lentiviral vectors in corneal transduction.
- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
This research explores the efficiency of the Human Immunodeficiency Virus 1 (HIV-1) and the Equine Infectious Anaemia Virus (EIAV)-based vectors in gene transfer processes involving rabbit and human corneas and a particular mouse corneal endothelial cell line.
Experiment Setup
The researchers utilized both HIV-1 and EIAV vectors and modified them in order to examine their effectiveness in gene transfer processes. The vectors were pseudotyped with an envelope from the vesicular stomatitis virus-G (VSV-G) and contained particular marker transgenes governed by an internal CMV promoter.
- To ensure the desired specificity, they replaced the heterologous promoter in the EIAV vector with an inducible E-Selectin promoter, previously demonstrated to yield regulated gene-expression inside a plasmid system.
Findings and Observations
The team found and documented a range of results and observations, including:
- EIAV showing greater efficiency in transducing (introducing genes into) human and rabbit corneal endothelial cells over HIV-1.
- Rabbit corneal endothelial cells responded to transduction in larger quantities as compared to their human counterparts.
- A noticeable impairment between the EIAV-based vector and its internal E-Selectin promoter in the inducible system. Instead of the expected controlled transgene expression or promoter activity silencing, U3-modified long-terminal-repeats (LTR) restricted the conditional activity of the E-Selectin promoter. As a result, there was significant transgene expression, even without inducible promoter stimulation.
Conclusion and Implications
This study confirmed that lentiviruses can efficiently transduce a corneal endothelial cell line and full thickness corneas from different species. This suggests they can be used as an effective tool for gene therapy concerning certain corneal diseases. The study also highlighted areas that need operational improvements, specifically the U3-LTR’s modification that affected regulated transgene expression.
- These findings are crucial in understanding the potential applications and challenges of using lentiviral vectors in gene therapy and, more specifically, for addressing corneal diseases.
- This research carries significant implications for vector designs to be used in diagnostic or therapeutic opportunities.
Cite This Article
Publication
Researcher Affiliations
- Jefferiss Research Trust Laboratories, Wright-Fleming Institute, Faculty of Medicine, Division of Medicine, Department of GU Medicine, St Mary's Campus Medicine, Imperial College London, Norfolk Place, London W2 1PG, UK. s.beutelspacher@imperial.ac.uk
MeSH Terms
- Animals
- Cell Line
- Cornea / physiology
- E-Selectin / genetics
- Endothelium, Corneal / physiology
- Flow Cytometry / methods
- Gene Expression
- Genetic Vectors / genetics
- Green Fluorescent Proteins / genetics
- HIV-1 / genetics
- Humans
- Infectious Anemia Virus, Equine / genetics
- Liposomes
- Mice
- Mice, Inbred BALB C
- Promoter Regions, Genetic / genetics
- Rabbits
- Transduction, Genetic / methods
- Transfection / methods
- Transgenes / genetics
Citations
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