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Updated: May 21, 2026

Induction of Intestinal Inflammation by Adoptive Transfer of CBir1 TCR Transgenic CD4+ T Cells to Immunodeficient Mice
Published on: December 16, 2021
Pro-inflammatory cytokine interleukin-1β promotes the development of intestinal stem cells
Objective:
We investigated the effect of IL-1β on the development of intestinal epithelial stem cells.
Materials And Methods:
Normal intestinal epithelial cell line IEC-18 cells were cultured in the presence or absence of 200 pM of IL-1β in serum-free medium (SFM) for various time periods. The effects of IL-1β on intestinal stem cell self-renewal and IEC-18 cell proliferation were evaluated by a colony formation assay, MTT assay, and a focus formation assay. The expression of stemness genes including Bmi-1, Lgr-5, c-myc, Nanog, and β-catenin in IEC-18 cells were measured by quantitative PCR and western blot analysis.
Results:
IEC-18 cells grew as a monolayer in SFM in the absence of IL-1β. Cellular spheres were formed when IEC-18 cells were grown in SFM in the presence of IL-1β. IL-1β induced the development of large colonies in the soft-agar as well as the formation of foci when IEC-18 cells were cultured in type-I collagen-coated plates. The expression of Bmi-1, Lgr-5, c-myc, Nanog, and β-catenin were significantly increased in IEC-18 cells treated with IL-1β.
Conclusion:
Our studies provide direct evidence the IL-1β may play an important role in the self-renewal of intestinal epithelial stem cells and the development of cancer stem cells.
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Published on: April 21, 2015
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