Abstract
We investigated the efficiency of gene transduction into murine pancreatic islets using the adenovirus (Ad) vector. Western blotting analysis showed that mouse pancreatic islets express coxsackievirus and adenovirus receptor, a receptor for Ad. Nevertheless, gene expression after transduction of the Ad vector in vitro was observed only in the periphery of the islets, probably due to physical obstruction against Ad infection of the cells in the inside of islets. Ca 2+-free treatment before the Ad vector transduction enhanced transduction efficiency in the islets, but not the cells in the inside of islets. The Ad vector transduction through the celiac artery in vivo and then cultivation of islets in vitro resulted in efficient transduction even in the inside of islets. Thus we propose a new strategy for efficient gene transfer to pancreatic β-cells.
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