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Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [NKT_after_Dex]

ABSTRACT: The goal of this study was to understand the role of thymic natural killer T cells (NKT) in thymic regeneration following dexamethasone-induced acute involution. For this purpose we treated WT mice with dexamethasone, sorted NKT from their thymi 3 days after treatment when the thymus begins its recovery, or at an earlier time point (18 hours) for comparison, and performed bulk RNA Seq.

ORGANISM(S): Mus musculus

PROVIDER: GSE244221 | GEO | 2024/01/11

REPOSITORIES: GEO

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Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [Fibroblasts_after_Dex]

Project description:The goal of this study was to understand the role of fibroblasts in thymic regeneration following dexamethasone-induced acute involution. For this purpose we treated WT mice with dexamethasone, sorted fibroblasts from their thymi 4 days after treatment when the thymus begins its recovery, or at an earlier time point (18 hours) for comparison, and performed bulk RNA Seq.

2024-01-11 | GSE244218 | GEO

Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [Tuft_after_Dex]

Project description:The goal of this study was to understand the role of thymic tuft cells in thymic regeneration following dexamethasone-induced acute involution, and determine whether this is affected by IL-13, which is produced by ILC2 upon involution and the receptor for which is expressed by tuft cells. For this purpose we treated WT and Il13ra1 KO mice with dexamethasone, sorted tuft cells from their thymi 3 days after treatment when the thymus begins its recovery, at an earlier time point (18 hours) for comparison, or at a later time point (6d) when IL-13 has been released, and performed bulk RNA Seq.

2024-01-11 | GSE244220 | GEO

Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [ILC2_after_Dex]

Project description:The goal of this study was to understand the role of thymic innate lymphoid cells (ILC2) in thymic regeneration following dexamethasone-induced acute involution, and determine whether this is activated by the alarmins IL-25 and IL-33. For this purpose we treated WT, Il25 KO or Il33 mice with dexamethasone, sorted ILC2 cells from their thymi 3 days after treatment when the thymus begins its recovery, or at an earlier time point (18 hours) for comparison, and performed bulk RNA-Seq.

2024-01-11 | GSE244216 | GEO

Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [Tuft_after_irr]

Project description:The goal of this study was to understand the role of thymic tuft cells in thymic regeneration following irradiation-induced acute involution. For this purpose we treated WT mice with sublethal irradiation, sorted tuft cells from their thymi 3 days after treatment when the thymus begins its recovery, and performed bulk RNA Seq.

2024-01-11 | GSE244219 | GEO

Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [CITE-Seq]

Project description:The goal of this study was to examine the effect of dexamethasone-induced involution on the thymus cellular composition, and highlight cell populations which participate in the regeneration process. For this purpose we treated WT mice with dexamethasone, sorted non-T hematopoietic cells from their thymi 4 days after treatment when the thymus begins its recovery, or at an earlier time point (18 hours) for comparison, and performed CITE-Seq.

2024-01-11 | GSE244229 | GEO

Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [Fibroblasts_after_irr]

Project description:The goal of this study was to understand the role of fibroblasts in thymic regeneration following irradiation-induced acute involution. For this purpose we treated WT mice with sublethal irradiation, sorted fibroblasts from their thymi 3 days after treatment when the thymus begins its recovery, or at an earlier time point (1 day) for comparison, and performed bulk RNA Seq.

2024-01-11 | GSE244217 | GEO

Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [ILC2_after_irr]

Project description:The goal of this study was to understand the role of thymic innate lymphoid cells (ILC2) in thymic regeneration following irradiation-induced acute involution, and determine whether this is activated by the alarmin IL-25. For this purpose we treated WT or Il25 KO mice with sublethal irradiation and/or recombinant IL-25, sorted ILC2 cells from their thymi 3 days after treatment when the thymus begins its recovery, and performed bulk RNA Seq.

2024-01-11 | GSE244202 | GEO

Tuft cells and fibroblasts promote thymus regeneration through activation of a type-2 immune response [TEC_after_rAREG_inj]

Project description:The goal of this study was to determine how thymic epithelial cells (TEC) differentiation and gene expression is affected by amphiregulin (AREG), which is produced by ILC2 upon thymic involution and the receptor for which is expressed by early TEC subsets. For this purpose we treated WT mice with recombinant AREG, sorted TEC from their thymi 10 days after treatment when the thymus is recovering and AREG has been released, and performed bulk RNA-Seq.

2024-01-11 | GSE244225 | GEO

Gene expression comparison of wild-type and IL15ko thymic NKT cells

Project description:Semi-invariant natural killer T (NKT) cells are thymus-derived innate lymphocytes that modulate microbial and tumour immunity as well as autoimmune diseases. These immunoregulatory properties of NKT cells are acquired during their development. Much has been learnt regarding the molecular and cellular cues that promote NKT cell development, yet how these cells are maintained in the thymus and the periphery and how they acquire functional competence are incompletely understood. We found that IL-15 induced several Bcl-2 family survival factors in thymic and splenic NKT cells in vitro. Yet, IL15-mediated thymic and peripheral NKT cell survival critically depended on Bcl-xL expression. Additionally, IL-15 regulated thymic developmental stage 2 (ST2) to ST3 lineage progression and terminal NKT cell differentiation. Global gene expression analyses and validation revealed that IL-15 regulated Tbx21 (T-bet) expression in thymic ST3 NKT cells. The loss of IL15-dependent T-bet expression resulted in poor expression of IFN-γ and several NK cell receptors in NKT cells. Taken together, our findings reveal a critical role for IL-15 in NKT cell survival, which is mediated by Bcl-xL, and effector differentiation, which is regulated by T-bet. Gene expression was measured in NKT cells sorted from pooled thymi of wild-type (3 replicates) or IL-15 deficient (2 replicates) mice.

2011-12-08 | E-GEOD-32568 | biostudies-arrayexpress

Role of AhR in thymocyte emigration in vivo

Project description:Over-activation of the aryl hydrocarbon receptor by TCDD in mice leads among other phenotypes to a severe thymic atrophy accompanied by immunosuppression. TCDD causes a block in thymocyte maturation and a preferential emigration of immature CD4-CD8- DN thymocytes (recent thymic emigrants) into the periphery. As part of this study gene expression profiles from DN thymocytes and thymic emigrants were generated from TCDD and solvent control mice Keywords: Affymetrix, TCDD, CD4-CD8- thymocytes, Thymus involution, thymic emigration, Ahr Female, 6-8 week old C57BL6 mice were i.p. injected with 10 M-BM-5g/kg TCDD. After 5 days mice were anesthezised and FITC injected into their thymi. after 24h mice were sacrificed and CD4-CD8-FITC+ cells isolated from thymus (thymocytes) and spleen (recent thymus emigrants).

2008-11-25 | E-GEOD-10166 | biostudies-arrayexpress

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