Intestinal Epithelial Responses to IL-17 in Adult Stem Cell-derived Human Intestinal Organoids
- Authors
- Lee, C[Lee, Chnasu]; Song, JH[Song, Joo Hye]; Cha, YE[Cha, Yeo Eun]; Chang, DK[Chang, Dong Kyung]; Kim, YH[Kim, Young-Ho]; Hong, SN[Hong, Sung Noh]
- Issue Date
- 5-Dec-2022
- Publisher
- OXFORD UNIV PRESS
- Keywords
- Intestinal organoid; IL-17A; pyroptosis; caspase-1; IgA transcytosis
- Citation
- JOURNAL OF CROHNS & COLITIS, v.16, no.12, pp.1911 - 1923
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF CROHNS & COLITIS
- Volume
- 16
- Number
- 12
- Start Page
- 1911
- End Page
- 1923
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/99271
- DOI
- 10.1093/ecco-jcc/jjac101
- ISSN
- 1873-9946
- Abstract
- Background Th17 cells and their signature cytokine, interleukin-17A [IL-17], are considered as the main pathogenic factors in inflammatory bowel diseases [IBDs]. However, IL-17 neutralising antibodies, a theoretically curative medication for IBDs, paradoxically aggravated intestinal inflammation. The mechanisms by which IL-17 mediates the protective and pathological effects of IL-17 remain unclear in the intestinal epithelium. Methods The intestinal epithelial responses induced by IL-17 were evaluated using the human small intestinal organoid [enteroid] model. Results Organoid-forming efficiency, cell viability, and proliferation of enteroids were decreased in proportion to IL-17 concentration. The IL-17 induced cytotoxicity was predominantly mediated by pyroptosis with activation of CASP1 and cleavage of GSDMD. Bulk RNA-sequencing revealed the enrichment of secretion signalling in IL-17 treated enteroids, leading to mucin exocytosis. Among its components, PIGR was up-regulated significantly as the concentration of IL-17 increased, resulting in IgA transcytosis. Mucin exocytosis and IgA transcytosis have a protective role against enteric pathogens. Single-cell RNA sequencing identified that CASP1-mediated pyroptosis occurred actively in intestinal stem cells [ISCs] and enterocytes. IL-17 neutralising antibody completely restored IL-17 induced cytotoxicity, but suppressed mucin secretion and IgA transcytosis. Pyroptosis inhibition using CASP1 inhibitors significantly improved IL-17 induced cytotoxicity without diminishing its beneficial effects. Conclusions IL-17 induces the pyroptosis of ISCs and enterocytes, as well as mucin secretion of goblet cells and IgA transcytosis of epithelial cells. Paradoxical gastrointestinal effects of IL-17 neutralising antibodies may be associated with inhibition of mucin secretion and IgA transcytosis. The inhibition of pyroptosis using CASP1 inhibitors prevents IL-17 induced cytotoxicity without compromising its beneficial effects.
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Collections - Medicine > Department of Medicine > 1. Journal Articles
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