Project description:This study used bulk ATAC sequencing of either small intestinal ILC2s or Lgr5+ epithelial stem cells +50 days after an IL-25 regimen or PBS regimen in wild type (ILC2s) or Lgr5DTR-EGFP (epithelial stem cells) mice to study chromatin accessibility.
Project description:This study used single cell RNA sequencing of small intestinal ILC2s +50 days after an IL-25 regimen or PBS regimen in wild type and Il25-/- mice to study memory ILC2 gene signatures.
Project description:This study used bulk ATAC sequencing of epitheilal crypt organoids grown for 6 days, which were isolated from proximal small intestines of wild type mice +50 days after an IL-25 regimen or PBS regimen to study chromatin accessibility.
Project description:Adaptation of immune cells to tissue-specific microenvironments is a crucial process in homeostasis and inflammation. Here, we show that murine effector type 2 innate lymphoid cells (ILC2s) from various organs are equally effective in repopulating ILC2 niches in other anatomical locations where they adapt tissue-specific phenotypes of target organs. Single-cell transcriptomics of ILC2 populations revealed upregulation of retinoic acid (RA) signaling in ILC2s during adaptation to the small intestinal microenvironment, and RA signaling mediated reprogramming of kidney effector ILC2s towards the small intestinal phenotype in vitro and in vivo. Inhibition of intestinal ILC2 adaptation by blocking RA signaling impaired worm expulsion during Strongyloides ratti infection, indicating functional importance of ILC2 tissue imprinting. In conclusion, this study highlights that effector ILC2s retain the ability to adapt to changing tissue-specific microenvironments, enabling them to exert tissue-specific functions, such as promoting control of intestinal helminth infections.
Project description:This study used single cell RNA sequencing of small intestinal ILC2s +60 days after helminth infection (Nippostrongylus brasiliensis-Nb. or Heligmosomoides polygyrus, Hp.) and in age matched naïve mice (Ctrl) to study memory ILC2 gene signatures after helminth infection.
Project description:Adaptation of immune cells to tissue-specific microenvironments is a crucial process in homeostasis and inflammation. Here, we show that murine effector type 2 innate lymphoid cells (ILC2s) from various organs are equally effective in repopulating ILC2 niches in other anatomical locations where they adapt tissue-specific phenotypes of target organs. Single-cell transcriptomics of ILC2 populations revealed upregulation of retinoic acid (RA) signaling in ILC2s during adaptation to the small intestinal microenvironment, and RA signaling mediated reprogramming of kidney effector ILC2s towards the small intestinal phenotype in vitro and in vivo. Inhibition of intestinal ILC2 adaptation by blocking RA signaling impaired worm expulsion during Strongyloides ratti infection, indicating functional importance of ILC2 tissue imprinting. In conclusion, this study highlights that effector ILC2s retain the ability to adapt to changing tissue-specific microenvironments, enabling them to exert tissue-specific functions, such as promoting control of intestinal helminth infections.