The application belongs to the technical field of
biology, and discloses a
reagent combination or kit for constructing an intestinal
organoid and application thereof. The
reagent combination or kit can obtain an intestinal
organoid from donor-derived epithelial cells in a non-invasive manner, the obtained intestinal
organoid can be frozen and recovered, and can be long-term expanded
in vitro; the
transcriptome characteristics are similar to those of real human small intestinal tissues, and a plurality of typical marker genes of small intestinal lineage
cell types are highly expressed; compared with an intestinal organoid induced by pluripotent stem cells, the intestinal organoid is more characteristic of an intestinal lineage, and the intestinal function development is more mature; after the intestinal organoid is promoted to be mature, genes related to
drug absorption and
metabolism are also highly expressed, the intestinal organoid has similar
drug absorption capacity to an immortalized
intestinal cell line, but more outstandingly shows
intestinal cell lineage characteristics, and is closer to a real intestinal environment in a
human body, and can be used for intestinal
disease drug screening; and has an intestinal
barrier function.