Journal
NATURE IMMUNOLOGY
Volume 16, Issue 3, Pages 306-U142Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ni.3094
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Funding
- US National Institutes of Health [R24A1072073, 1U01A1095542, R01DE021255, R21CA16719, T32 GM07200, T32 AI 7172-34]
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The recognized diversity of innate lymphoid cells (ILCs) is rapidly expanding. Three ILC classes have emerged, ILC1, ILC2 and ILC3, with ILC1 and ILC3 including several subsets. The classification of some subsets is unclear, and it remains controversial whether natural killer (NK) cells and ILC1 cells are distinct cell types. To address these issues, we analyzed gene expression in ILCs and NK cells from mouse small intestine, spleen and liver, as part of the Immunological Genome Project. The results showed unique gene-expression patterns for some ILCs and overlapping patterns for ILC1 cells and NK cells, whereas other ILC subsets remained indistinguishable. We identified a transcriptional program shared by small intestine ILCs and a core ILC signature. We revealed and discuss transcripts that suggest previously unknown functions and developmental paths for ILCs.
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