ScRNA-sequencing of ILC2 sorted from the choroid plexus and meninges of IL-33 treated aged (20-22 mos) mice
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE139328 | GEO | 2020/01/21
REPOSITORIES: GEO
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Project description:ILC2 are potent producers of IL-5 and IL-13 and Th2 cytokines have been found to promote neurogenesis and cognitive functions. We report microglia, brain T cells and ILC2 have a range of differentially expressed genes in IL-33 treated aged mice. Brain ILC2 upregulated a range of neuroprotective genes.
2020-01-21 | GSE129996 | GEO
Project description:Aging induces cognitive decline and Th2 cytokines have been found to promote neurogenesis and cognitive functions. ILC2 are potent producers of IL-5 and IL-13. The role of ILC2 in cognitive function in the context of aging has not been investigated. We report tissue resident ILC2 accumulate in the choroid plexus of the brain in aged mice. They are long-lived and can switch between cellular dormancy and proliferation in response to replication stress. ILC2 play a direct role in promoting the cognitive functions in aged mice, through producing IL-5. IL-5 has neuroprotective functions including neurogenesis and reducing pro-inflammatory functions of microglia in aged mice.
2020-01-21 | GSE129923 | GEO
Project description:ILC2 are potent producers of IL-5 and IL-13 and Th2 cytokines. We have found that 3xTg-AD mice exhibit diminished ILC2 numbers and functionality in the brain barriers. We have found through scRNA-seq that cultured brain ILC2 from 7 months old 3xTg-AD mice expressed significantly less IL-5 ane Areg but increased Gzma and Gzmb.
2021-07-14 | GSE161861 | GEO
Project description:Group 2 innate lymphoid cells (ILC2) represent innate homologues of Th2 cells that participate in immune defense and tissue homeostasis through production of type 2 cytokines. While T lymphocytes metabolically adapt to microenvironmental changes, knowledge of human ILC2 metabolism is limited and its key regulators are unknown. Here we show that circulating “naïve” ILC2 have an unexpected metabolic profile with a higher level of oxidative phosphorylation (OXPHOS) than NK cells. Accordingly, ILC2 are severely reduced in patients with mitochondrial disease and impaired OXPHOS. Metabolomic and nutrient receptors analysis reveals ILC2 uptake amino acids to sustain OXPHOS at steady-state. Upon activation with interleukin 33 (IL-33), ILC2 become highly proliferative relying on glycolysis and mTOR to produce IL-13, while continuing to fuel OXPHOS with amino acids to maintain cellular fitness and proliferation. Our results suggest that proliferation and function are metabolically uncoupled in human ILC2, offering new strategies to target ILC2 in disease settings.
2021-09-10 | GSE183669 | GEO
Project description:scRNA-sequencing of ILC2 sorted from the choroid plexus and meninges of IL-33 treated aged (20-22 mos) mice
| PRJNA579323 | ENA
Project description:ILC2 cells are a newly described cell type whose biology and contribution to disease are poorly understood. ILC2 cells are activated by allergens, viral infection, and/or epithelial damage via IL-33 and IL-25. ILC2 cells require IL-2, IL-7, IL-25 and IL-33 for their survival and expansion. In mice, ILC2s produce multiple mediators primarily associated with type 2 inflammation (IL-13, IL-5, IL-4, IL-6, IL-9, IL-10, GM-CSF, amphiregulin). ILC2 cells may contribute to the pathology of asthma through multiple mediators that include IL-13-independent pathways. Our goal is to compare transcriptional profiles of IL-33- or IL-25-activated ILC2 cells from blood to characterize these cells and to identify marker(s) that can be utilized to detect them in human tissue. ILC2 cells (Lineage negative, CRTH2+, CD161+, CD127+) were purified from human blood of 5 different donors by flow cytometry. The ILC2 yield ranged from 20,000 to 165,000 cells per donor (0.001-0.008% WBC). Purified ILC2s were expanded in vitro in the presence of IL-2, IL-7, IL-33 and IL-25 (each at 50 ng/ml) for 7-10 days. Expanded cells maintained the ILC2 phenotype (Lineage negative, CRTH2+, CD161+, CD127+). The cells were rested for 2 days in the presence of 1 ng/ml IL-2 and IL-7 and then treated in the presence of 1 ng/ml IL-2 and IL-7 with either media control, IL-25 (50 ng/ml), IL-33 (50 ng/ml), and/or TSLP (50 ng/ml) in combination, for 6 or 24 hours. Whole RNA was isolated via the RNeasy kit (Qiagen). Stratagene Universal Human Reference RNA was used as the reference.
2013-12-31 | E-GEOD-45458 | biostudies-arrayexpress
Project description:Background: Alternaria exposure is associated with severe asthma in humans. Alternaria exposure in mice potently activates group 2 innate lymphoid cells (ILC2s) via the IL-33/ST2 axis and causes ILC2s to robustly secrete type 2 cytokines. Objective: Our aim was to determine whether conventionally used ILC2 markers, ST2 (IL-33R) and CD127 (IL-7Ra), were sufficient to identify all Th2-cytokine producing ILCs after Alternaria exposure. Methods: Mice received intranasal Alternaria for three days prior to analysis. Lung ILCs were identified by flow cytometry as CD45+Lineage−Thy1.2+ lymphocyte-sized cells, divided into four subsets based on ST2 and CD127 expression, and stained for intracellular cytokines and transcription factors. Sort-purified ILC subpopulations were also analyzed by RNA sequencing and qPCR. Results: Alternaria exposure led to accumulation of all ILC populations regardless of ST2 or CD127 expression. Nearly half of the GATA-3+, IL-5+, and IL-13+ ILCs were “unconventional” as they were either single or double negative for ST2/CD127. Further, these populations upregulated CD25, KLRG1, and ICOS after Alternaria challenge. Some activated unconventional IL-5+ ILC2s also produced IFNγ and IL-17A. In addition to shared ILC2 transcripts (Gata3, Il5, Il13) in all populations, RNA-seq further identified novel transcripts enriched in each subset. Finally, transcripts from all populations that correlated best with IL-5 and IL-13 production included Tnfrsf18, Ffar2, and Pde4b. Conclusions: Unconventional ST2- and CD127-negative mouse lung ILC2 populations are induced by Alternaria. Thus, commonly used lung ILC2 identification methods based on ST2 and CD127 do not accurately account for the total ILC2 burden and may exclude nearly half of these cells.
2019-08-22 | GSE136156 | GEO
Project description:The ETS1 transcription factor is required for the development and cytokine-induced expansion of ILC2 ILC2 cells isolated from ETS1-deleted or litter mate control mice were cultured on OP9-DL1 with IL-7 and IL-33. Subsequently, RNA from ICOS+ cells was extracted, labelled and hybridized to Affymetrix microarrays. The goal of this study is to investigate ETS1-dependent genes in developing ILC2 cells.
2016-04-01 | E-GEOD-79742 | biostudies-arrayexpress
Project description:Group 2 innate lymphoid cells (ILC2s) are distributed systemically and produce type 2 cytokines in response to a variety of stimuli, including the epithelial cytokines interleukin (IL)-25, IL-33, and thymic stromal lymphopoietin (TSLP). Transcriptional profiling of ILC2s from different tissues, however, grouped ILC2s according to their tissue of origin, even in the setting of combined IL-25, IL-33R and TSLPR-deficiency. Single-cell profiling confirmed a tissue-organizing transcriptome and identified ILC2 subsets expressing distinct activating receptors, including the major subset of skin ILC2s, which were activated preferentially by IL-18. Tissue ILC2 subsets were normal in germ- free mice, suggesting that endogenous, tissue-derived, signals drive the maturation of ILC2 subsets by controlling expression of distinct patterns of activating receptors, thus anticipating tissue-specific patterns to perturbations occurring later in life.
2018-09-10 | GSE117470 | GEO
Project description:Group 2 innate lymphoid cells (ILC2s) are distributed systemically and produce type 2 cytokines in response to a variety of stimuli, including the epithelial cytokines interleukin (IL)-25, IL-33, and thymic stromal lymphopoietin (TSLP). Transcriptional profiling of ILC2s from different tissues, however, grouped ILC2s according to their tissue of origin, even in the setting of combined IL-25, IL-33R and TSLPR-deficiency. Single-cell profiling confirmed a tissue-organizing transcriptome and identified ILC2 subsets expressing distinct activating receptors, including the major subset of skin ILC2s, which were activated preferentially by IL-18. Tissue ILC2 subsets were normal in germ- free mice, suggesting that endogenous, tissue-derived, signals drive the maturation of ILC2 subsets by controlling expression of distinct patterns of activating receptors, thus anticipating tissue-specific patterns to perturbations occurring later in life.
2018-09-10 | GSE117567 | GEO