Conference paper
Epizone: Interlaboratory Ring Trial to Compare Dna Transfection Efficiencies
Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail1
Division of Virology, National Veterinary Institute, Technical University of Denmark2
Animal Health and Veterinary Laboratories Agency3
Centre de cooperation Internationale en Recherche Agronomique pour le Développement4
Friedrich-Loeffler-Institute5
Pirbright Institute6
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria7
National Veterinary Institute, Technical University of Denmark8
Section of Fish Diseases, Division of Poultry, Fish and Fur Animals, National Veterinary Institute, Technical University of Denmark9
Division of Poultry, Fish and Fur Animals, National Veterinary Institute, Technical University of Denmark10
Sektion for Eksotiske Virussygdomme, Division of Virology, National Veterinary Institute, Technical University of Denmark11
...and 1 moreChemical-based transfection of DNA into cultured cells is routinely used to study for example viral or cellular gene functions involved in virus replication, to analyse cellular defence mechanisms or develop specific strategies to interfere with virus replication. Other applications include rescue of viruses by reverse genetics and/or generation of mutated viruses.
A large number of transfection chemicals like calcium phospate, branched organic compounds, liposomes, cationic polymers etc. are available on the market which are used by different laboratories for different cell lines. To obtain an overview on the efficiencies of varying transfection procedures, an interlaboratory ring trial was initiated within EPIZONE theme 5.
A total of 15 participitating laboratories from 7 member institutions received RK13 cells, plasmid DNA encoding firefly luciferase under the transcriptional control of the human cytomegalovirus major immediate early promoter, a specially developed lysis buffer and a detailed protocol. Transfected cells were harvested in the laboratories of the participants, frozen and sent to the FLI where both the luciferase activity and protein content of the individual samples were determined to compare transfection efficiency between laboratories with the same protocol and equipment.
In addition some laboratories sent samples from cells they are routinely using, transfected with the provided firefly luciferase plasmid, to allow comparison of transfection efficiency between different cell types. About 50 different samples were analysed and the luciferase activity per nanogram total protein (RLU/ng) was determined.
The results revealed for RK13 cells a large range of specific luciferase activities between laboratories and, in comparison to RK13 cells, also varying transfection efficacies for other the cell lines. Details will be presented.
Language: | English |
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Year: | 2011 |
Proceedings: | 5th Annual Meeting EPIZONE |
Types: | Conference paper |
ORCIDs: | Lorenzen, Niels and Rasmussen, Thomas Bruun |