TY - JOUR KW - Coculture Techniques KW - Intestines KW - organoids AU - Jens Puschhof AU - Cayetano Pleguezuelos-Manzano AU - Adriana Martinez-Silgado AU - Ninouk Akkerman AU - Aurelia Saftien AU - Charelle Boot AU - Amy de Waal AU - Joep Beumer AU - Devanjali Dutta AU - Inha Heo AU - Hans Clevers AB - Adult-stem-cell-derived organoids model human epithelial tissues ex vivo, which enables the study of host-microbe interactions with great experimental control. This protocol comprises methods to coculture organoids with microbes, particularly focusing on human small intestinal and colon organoids exposed to individual bacterial species. Microinjection into the lumen and periphery of 3D organoids is discussed, as well as exposure of organoids to microbes in a 2D layer. We provide detailed protocols for characterizing the coculture with regard to bacterial and organoid cell viability and growth kinetics. Spatial relationships can be studied by fluorescence live microscopy, as well as scanning electron microscopy. Finally, we discuss considerations for assessing the impact of bacteria on gene expression and mutations through RNA and DNA sequencing. This protocol requires equipment for standard mammalian tissue culture, or bacterial or viral culture, as well as a microinjection device. BT - Nature Protocols DA - 2021-10 DO - 10.1038/s41596-021-00589-z IS - 10 LA - eng N2 - Adult-stem-cell-derived organoids model human epithelial tissues ex vivo, which enables the study of host-microbe interactions with great experimental control. This protocol comprises methods to coculture organoids with microbes, particularly focusing on human small intestinal and colon organoids exposed to individual bacterial species. Microinjection into the lumen and periphery of 3D organoids is discussed, as well as exposure of organoids to microbes in a 2D layer. We provide detailed protocols for characterizing the coculture with regard to bacterial and organoid cell viability and growth kinetics. Spatial relationships can be studied by fluorescence live microscopy, as well as scanning electron microscopy. Finally, we discuss considerations for assessing the impact of bacteria on gene expression and mutations through RNA and DNA sequencing. This protocol requires equipment for standard mammalian tissue culture, or bacterial or viral culture, as well as a microinjection device. PY - 2021 SP - 4633 EP - 4649 T2 - Nature Protocols TI - Intestinal organoid cocultures with microbes VL - 16 SN - 1750-2799 ER -