Abstract

Intestinal epithelial cells separate subepithelial tissues from luminal environment formed with food, incoming pathogens, and resident intestinal microbiota, etc., and elicit various intestinal function. Enteroid, a three-dimensional culture system of small intestinal epithelial cells, has been widely used for analyzing the intestinal function, further a transgenic enteroid was developed to investigate the molecular mechanisms. However, conventional transgenic enteroid production method, which transfer gene into single stem cells, has limitations including low efficiency and time-consuming. Here we show that by gene transfer into small intestinal isolated crypts maintaining stem cell niche, a transgenic enteroid was obtained quickly and efficiently. Isolated crypts were transfected by lentiviral vector without separating into single cells, and transgenic enteroid composed of all lineages of intestinal epithelial cells was generated at day 7 with yield of 56%, maintaining the intestinal function in drug transport and innate immunity. Our efficient and simple transgenic enteroid generation method enables high-throughput investigation of intestinal epithelial cells and contributes to understanding intestinal function.

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