Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Tan, PH; Manunta, M; Ardjomand, N; Xue, SA; Larkin, DF; Haskard, DO; Taylor, KM; George, AJ.
Antibody targeted gene transfer to endothelium.
J Gene Med. 2003; 5(4):311-323
Doi: 10.1002/jgm.358
Web of Science
PubMed
FullText
FullText_MUG
- Co-Autor*innen der Med Uni Graz
- Ardjomand Navid
- Altmetrics:
- Dimensions Citations:
- Plum Analytics:
- Scite (citation analytics):
- Abstract:
- BACKGROUND: One of the drawbacks of the currently available vectors for gene therapy is the lack of selectivity in gene delivery. We have therefore investigated a strategy to generate immunoliposomes to target non-viral vectors to cell surface receptors on endothelium. MATERIALS AND METHODS: We have developed a novel method of coupling antibodies (Abs) to liposomes complexed to DNA, using mild heat treatment to aggregate the immunoglobulin G (IgG). The interaction of plasmid DNA, liposomes and Abs was measured using a gel retardation assay and a resonant mirror biosensor. The size of the transfection complex was determined by light scattering, and the binding and internalization of the complex to cells was followed using flow cytometry. The transfection ability was tested on cell lines and primary cells in vitro and human corneal or vascular tissues ex vivo. RESULTS: The interaction of antibodies with liposomes is relatively stable (t(1/2) congruent with 45 min). The size of the liposome, Ab and DNA complex was found to be around 500 nm in 4% BSA. The addition of anti-transferrin receptor Abs increased the internalization of the liposome-DNA complex into cells. Abs against both transferrin receptor and E-selectin were shown to augment transfection efficiency of liposomes to cell expressing the appropriate antigens. They are also shown to be efficient in mediating gene delivery to corneal and vascular tissues ex vivo. CONCLUSIONS: We have shown that our novel vector is capable of in vitro and ex vivo gene delivery to cells and human tissues including cornea, artery and vein. In particular, an Ab against E-selectin was effective at selectively delivering genes to activated endothelial cells expressing the adhesion molecule. Such a strategy will have applications for targeting these tissues prior to transplantation or autologous grafting, and, in the longer term, may allow in vivo targeting of gene therapy to inflammatory sites.
- Find related publications in this database (using NLM MeSH Indexing)
- Animals -
- Antibodies, Monoclonal - genetics
- Biochemistry - methods
- CHO Cells - methods
- Cells, Cultured - methods
- Cricetinae - methods
- E-Selectin - genetics
- Endothelium, Corneal - physiology
- Endothelium, Vascular - cytology
- Gene Transfer Techniques - cytology
- Humans - cytology
- Kinetics - cytology
- Liposomes - cytology
- Receptors, Transferrin - immunology
- Transfection - methods
- Transferrin - chemistry
- Find related publications in this database (Keywords)
- immunoliposomes
- vascular and corneal endothelium
- gene transfer
- adhesion molecules