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Journal Article
Research Support, Non-U.S. Gov't
Efficient Source of Cells in Proximal Oviduct for Testing Non-Viral Expression Constructs in the Chicken Bioreactor Model and for Other in Vitro Studies.
This work shows the usefulness of chicken oviduct epithelial cells (COEC) in evaluating the efficacy of non-viral expression vectors carrying human therapeutic genes. Secondly, an efficient source of progenitor COEC for in vitro studies is described. Within the distal part of the oviduct, weak to moderate expression of a trans membrane glycoprotein (CD44) was observed. Single cells presenting only weak expression of CD44 were found in magnum sections. in vitro cultured oviduct cells originating from the distal oviduct were suitable for subculturing and showed a stable proliferation potential up to the 2nd passage. However, the pavimentous epithelial-like morphology of COEC was progressively lost over time and mainly a fibroblast-like monolayer was established in consecutive passages. Moreover, various commercial transfection agents including FuGENE6 and XtremeGENE9 DNA were used to optimize delivery of human interferon alfa-2a, (IFNα2a) a therapeutic protein gene under an ovalbumin promoter. The transfection efficiency of adherent COEC was estimated for up to 40% at a ratio of 6:1 of transfectant to pOVA5EIFN + GFP plasmid. Expression of IFNα2a was confirmed by western blotting in transformed COEC. In conclusion, the population of epithelial progenitor cells sourced from the distal oviduct can significantly contribute to in vitro culture of COEC, representing an efficient model to develop the production of avian bioreactors and other in vitro studies related to oviduct tissue.
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