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Stem-like intestinal Th17 cells give rise to pathogenic effector T cells during autoimmunity

ABSTRACT: Stem-like intestinal Th17 cells give rise to pathogenic effector T cells during autoimmunity

PROVIDER: PRJNA778252 | ENA |

REPOSITORIES: ENA

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Autoimmunity and infection give rise to distict inflammatory Th17 subsets [bulk RNA-seq]

Project description:Th17 cells are a heterogeneous population that is critical for tissue homeostasis and inflammation during clearance of infections and autoimmunity. Despite substantial efforts distinguishing homeostatic and inflammatory roles of Th17 cells, the mechanism underlying the divergent functions of inflammatory Th17 cells is poorly understood. In this study, we show that the inflammatory Th17 engaged in autoimmune colitis and those involved in infection-induced colitis are two distinguishable populations illustrated by their distinct responses to a pharmacological molecule, clofazimine (CLF). Distinct from existing Th17 inhibitors, CLF selectively inhibits pro-autoimmune Th17 cells while preserving the functional state of infection-elicited Th17 cells through restricting Aldh1l2expression. Using bulk RNA sequencing, we explored transcriptional response to CLF on in vitro differentiated inflammatory and homeostatic Th17 cells. Notably, we identified a unique suppression in the transcription of signature inflammatory genes in Th17 cells with a marginal effect on those elicited by infection.

2023-06-13 | GSE234593 | GEO

Autoimmunity and infection give rise to distict inflammatory Th17 subsets [single-cell RNA-seq]

Project description:Th17 cells are a heterogeneous population that is critical for tissue homeostasis and inflammation during clearance of infections and autoimmunity. Despite substantial efforts distinguishing homeostatic and inflammatory roles of Th17 cells, the mechanism underlying the divergent functions of inflammatory Th17 cells is poorly understood. In this study, we show that the inflammatory Th17 engaged in autoimmune colitis and those involved in infection-induced colitis are two distinguishable populations illustrated by their distinct responses to a pharmacological molecule, clofazimine (CLF). Distinct from existing Th17 inhibitors, CLF selectively inhibits pro-autoimmune Th17 cells while preserving the functional state of infection-elicited Th17 cells through restricting Aldh1l2expression. Using single-cell RNA sequencing, we explored inflammatory Th17 transcriptional response to CLF from the colonic tissue of mice during autoimmune colitis and Citrobacter rodentiuminfection using Rorc gfp/+ reportor mice. Notably, we identified a unique suppression in the transcription of signature inflammatory genes in Th17 cells from autoimmune colitis with a marginal effect on those elicited by infection. Additionally, we illustrate with these data that the transcriptionally programming of pro-autoimmune Th17 cells are, indeed, unique compared to infection-elicited Th17 cells. Finally, we analyzed the impact of CLF on human inflammatory Th17 cells from the inflammed colon of a patient with IBD.

2023-06-13 | GSE234592 | GEO

Stem-like intestinal Th17 cells give rise to pathogenic effector T cells during autoimmunity

Project description:This SuperSeries is composed of the SubSeries listed below.

2021-11-05 | GSE188322 | GEO

Autoimmunity and infection give rise to distict inflammatory Th17 subsets

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-06-13 | GSE234594 | GEO

Single-cell clonotype tracing identifies a stem-like intestinal Th17 population that gives rise to pathogenic effector T cells during autoimmunity

Project description:While intestinal Th17 cells are critical for maintaining tissue homeostasis, recent studies in both humans and mice have implicated their roles in the development of extra-intestinal autoimmune diseases such as multiple sclerosis. However, the mechanisms by which tissue Th17 cells mediate these dichotomous functions remain unknown. Here, we characterized the heterogeneity, plasticity, and migratory phenotypes of tissue Th17 cells in vivo by combining fate mapping with single-cell RNA sequencing to profile the transcriptomes and TCR clonotypes of over 84,000 Th17 cells at homeostasis and during CNS autoimmune inflammation. Inter- and intra-organ single-cell analyses revealed a homeostatic, stem-like TCF1+ IL-17+ SLAMF6+ population that traffics to the intestine where it is maintained by the microbiota, providing a ready-reservoir for the IL-23-driven generation of encephalitogenic GM-CSF+ IFNγ+ CXCR6+ T cells. Our study defines a direct relationship in vivo between IL-17+ non-pathogenic and GM-CSF+ and IFNγ+ pathogenic Th17 populations and provides, for the first time, a mechanism by which homeostatic intestinal Th17 cells direct extra-intestinal autoimmune disease.

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Effector TH17 cells give rise to long-lived TRM cells that are essential for an immediate response against bacterial infection

Project description:Effector TH17 cells give rise to long-lived TRM cells that are essential for an immediate response against bacterial infection

| PRJNA543753 | ENA

Effector TH17 cells give rise to long-lived TRM cells that are essential for an immediate response against bacterial infection

Project description:Effector TH17 cells give rise to long-lived TRM cells that are essential for an immediate response against bacterial infection

| PRJNA540274 | ENA

Single-cell clonotype tracing identifies a stem-like intestinal Th17 population that gives rise to pathogenic effector T cells during autoimmunity

Project description:Single-cell clonotype tracing identifies a stem-like intestinal Th17 population that gives rise to pathogenic effector T cells during autoimmunity

| PRJNA778255 | ENA

Bone marrow-derived monocytes give rise to self-renewing and fully differentiated Kupffer cells

Project description:Self-renewing tissue-resident macrophages are thought to be exclusively derived from embryonic progenitors. However, whether circulating monocytes can also give rise to such macrophages has not been formally investigated. Here we use a new model of diphtheria toxin-mediated depletion of liver-resident Kupffer cells to generate niche availability and show that circulating monocytes engrafted in the liver, gradually adopt the transcriptional profile of their depleted counterparts and become long-lived self-renewing cells. Underlining the physiological relevance of our findings, circulating monocytes also contribute to the expanding pool of macrophages in the liver shortly after birth, when macrophage niches become available during normal organ growth. Thus, like embryonic precursors, monocytes can and do give rise to self-renewing tissue-resident macrophages if the niche is available to them. Clec4F+ Kupffer cells were isolated and sorted from livers from adult WT mice or KC-DTR or KC-DTR littermate control mice +/- 50ng DT at indicated timepoints. 19 samples (arrays) in total. RNA was isolated, amplified with Nugene pico kit, converted to cDNA and then hybridised on Affymetrix GeneChip Mouse Gene 1.0 ST Arrays.

2015-11-21 | E-GEOD-75225 | biostudies-arrayexpress

Bone marrow-derived monocytes give rise to self-renewing and fully differentiated Kupffer cells

2015-11-21 | GSE75225 | GEO

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