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Analysis and improvement of the in vitro transfection efficiency of plasmid-DNA encoding for equine IL-12 used for melanoma therapy in horses

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Analysis and improvement of the in vitro transfection efficiency of plasmid-DNA encoding for equine IL-12 used for melanoma therapy in horses (Band 4)

María Carolina Durán Graeff (Autor)

Vorschau

Leseprobe, PDF (67 KB)
Inhaltsverzeichnis, PDF (15 KB)

ISBN-13 (Printausgabe) 9783954042845
ISBN-13 (E-Book) 9783736942844
Sprache Englisch
Seitenanzahl 146
Umschlagkaschierung matt
Auflage 1. Aufl.
Buchreihe Wissenschaftliche Reihe der Klinik für Pferde
Band 4
Erscheinungsort Göttingen
Promotionsort Hannover
Erscheinungsdatum 22.11.2012
Allgemeine Einordnung Dissertation
Fachbereiche Veterinärmedizin
Schlagwörter Allgemeine Veterinärmedizin, Spezielle Veterinärmedizin, Equine Melanoma, IL-12, transfection efficiency, IFN-gamma, Dendritic Cells
Beschreibung

In horses studies targeting equine melanoma therapy using DNA encoding for cytokines as interleukin 12 (IL-12) have shown some promising results. Nevertheless, complete remission after treatment has been only observed in few cases, possibly due to reduced therapy efficiency. Herein transfection efficiency and methodology-induced cytotoxicity were analysed after transfection with different nanoparticle-mediated and conventional approaches using eukaryotic DNA-expression-plasmids and mammalian cell lines. The addition of gold nanoparticles (AuNPs) to the transfection protocols significantly increased transfection efficiency when compared to a conventional FHD mediated transfection protocol, and cell vitality was mainly negatively affected by the addition of chemically generated AuNPs. To measure accurately equine IL-12 and IFN-gamma concentrations after therapy, several antibodies for cross reactivity against this equine cytokines were evaluated, establishing afterwards a bead-based Luminex assay. Additionally, considering the valuable characteristics of dendritic cells (DCs), their use in further equine melanoma studies could be beneficial. To improve the still poor generation efficiency in horses, a human CD14 monoclonal antibody and an automated magnetic activated cell sorting system was used, reaching 2-fold higher DC yields than in previous published outcomes.