Protocol for Immune Cell Isolation, Organoid Generation, and Co-culture Establishment from Cryopreserved Whole Human Intestine.

The human intestine plays a pivotal role in nutrient absorption and immune system regulation. Along the longitudinal axis, cell-type composition changes to meet the varying functional requirements. Therefore, our protocol focuses on the processing of the whole human intestine to facilitate the analysis of region-specific characteristics such as tissue architecture and changes in cell populations. We describe how to generate a biobank that can be used to isolate specific immune cell subtypes, generate organoid lines, and establish autologous immune cell-organoid co-cultures. Key features • Dissection and tissue analysis of whole human intestines. • Cryopreservation for biobank generation. • Optimized protocols for the isolation of epithelial and immune cells. • Autologous co-culture of organoids and lamina propria-derived immune cells.