TY - JOUR KW - Calcium-Binding Proteins KW - DNA-Binding Proteins KW - Humans KW - IL-22 KW - IL10RB KW - Interleukins KW - Intestinal Mucosa KW - Intestine, Small KW - organoids KW - Paneth Cells KW - Paneth Cells KW - Tumor Suppressor Proteins KW - anti-microbial proteins KW - enterocytes KW - inflammatory bowel disease KW - intestinal stem cells KW - mTOR KW - organoids KW - Regeneration AU - Gui-Wei He AU - Lin Lin AU - Jeff DeMartino AU - Xuan Zheng AU - Nadzeya Staliarova AU - Talya Dayton AU - Harry Begthel AU - Willine J. van de Wetering AU - Eduard Bodewes AU - Jeroen van Zon AU - Sander Tans AU - Carmen Lopez-Iglesias AU - Peter J. Peters AU - Wei Wu AU - Daniel Kotlarz AU - Christoph Klein AU - Thanasis Margaritis AU - Frank Holstege AU - Hans Clevers AB - Opposing roles have been proposed for IL-22 in intestinal pathophysiology. We have optimized human small intestinal organoid (hSIO) culturing, constitutively generating all differentiated cell types while maintaining an active stem cell compartment. IL-22 does not promote the expansion of stem cells but rather slows the growth of hSIOs. In hSIOs, IL-22 is required for formation of Paneth cells, the prime producers of intestinal antimicrobial peptides (AMPs). Introduction of inflammatory bowel disease (IBD)-associated loss-of-function mutations in the IL-22 co-receptor gene IL10RB resulted in abolishment of Paneth cells in hSIOs. Moreover, IL-22 induced expression of host defense genes (such as REG1A, REG1B, and DMBT1) in enterocytes, goblet cells, Paneth cells, Tuft cells, and even stem cells. Thus, IL-22 does not directly control the regenerative capacity of crypt stem cells but rather boosts Paneth cell numbers, as well as the expression of AMPs in all cell types. BT - Cell Stem Cell DA - 2022-09-01 DO - 10.1016/j.stem.2022.08.002 IS - 9 LA - eng N2 - Opposing roles have been proposed for IL-22 in intestinal pathophysiology. We have optimized human small intestinal organoid (hSIO) culturing, constitutively generating all differentiated cell types while maintaining an active stem cell compartment. IL-22 does not promote the expansion of stem cells but rather slows the growth of hSIOs. In hSIOs, IL-22 is required for formation of Paneth cells, the prime producers of intestinal antimicrobial peptides (AMPs). Introduction of inflammatory bowel disease (IBD)-associated loss-of-function mutations in the IL-22 co-receptor gene IL10RB resulted in abolishment of Paneth cells in hSIOs. Moreover, IL-22 induced expression of host defense genes (such as REG1A, REG1B, and DMBT1) in enterocytes, goblet cells, Paneth cells, Tuft cells, and even stem cells. Thus, IL-22 does not directly control the regenerative capacity of crypt stem cells but rather boosts Paneth cell numbers, as well as the expression of AMPs in all cell types. PY - 2022 SP - 1333 EP - 1345.e6 T2 - Cell Stem Cell TI - Optimized human intestinal organoid model reveals interleukin-22-dependency of paneth cell formation VL - 29 SN - 1875-9777 ER -