Abstract | AIM: METHODS: Low and high Coxsackievirus- Adenovirus Receptor (CAR) expressing human colon carcinoma cell lines were treated with 5-FU and two E1-deleted adenoviral constructs, one transferring GFP (Ad/CMV-GFP) the other bax (Ad/CEA-bax). The number of infected cells were monitored by GFP expression. To evaluate the effects of 5-FU in a receptor free system, Ad/GFP were encapsulated in liposomes and treated with 5-FU. Ad/GFP release was estimated with PCR and infection of 293 cells with the supernatant. Electron microscopy of the Ad5-GFP-liposome complex was made to investigate morphological changes of the liposomes after 5-FU. RESULTS:
Infection rates of all cell lines increased from 50% to 98% with emerging 5-FU concentrations. The enhanced viral uptake was independent of the CAR expression. Additionally, 5-FU treated liposomes released 2-2.5 times more adenoviruses. Furthermore, 5-FU-treated liposomes appeared irregular and porous-like. CONCLUSION: Adenoviral uptake is enhanced in the presence of 5-FU irrespective of CAR and is associated with morphological changes in membranes making the combination of both a promising option in gene therapy.
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Authors | Chiara Cabrele, Mandy Vogel, Pompiliu Piso, Markus Rentsch, Josef Schröder, Karl W Jauch, Hans J Schlitt, Alexander Beham |
Journal | World journal of gastroenterology
(World J Gastroenterol)
Vol. 12
Issue 32
Pg. 5168-74
(Aug 28 2006)
ISSN: 1007-9327 [Print] United States |
PMID | 16937527
(Publication Type: Journal Article)
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Chemical References |
- Antimetabolites, Antineoplastic
- CLMP protein, human
- Coxsackie and Adenovirus Receptor-Like Membrane Protein
- Lipids
- Liposomes
- Receptors, Virus
- Green Fluorescent Proteins
- Fluorouracil
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Topics |
- Adenoviridae Infections
(drug therapy)
- Antimetabolites, Antineoplastic
(pharmacology)
- Cell Line
- Cell Line, Tumor
- Coxsackie and Adenovirus Receptor-Like Membrane Protein
- Fluorouracil
(pharmacology)
- Gene Transfer Techniques
- Genetic Therapy
(methods)
- Genetic Vectors
(chemistry)
- Green Fluorescent Proteins
(chemistry)
- Humans
- Lipids
(chemistry)
- Liposomes
(chemistry)
- Membranes
(chemistry)
- Receptors, Virus
(metabolism, physiology)
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