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Transcriptional profiling of mouse ST2+ and ST2- Tregs across tissues

ABSTRACT: Transcriptional profiling of mouse ST2+ and ST2- Tregs across tissues

PROVIDER: PRJNA755747 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15506012.fastq.gz	Fastqsanger.gz
	SRR15506013.fastq.gz	Fastqsanger.gz
	SRR15506014.fastq.gz	Fastqsanger.gz
	SRR15506015.fastq.gz	Fastqsanger.gz
	SRR15506016.fastq.gz	Fastqsanger.gz

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Transcriptional profiling of mouse ST2+ and ST2- Tregs across tissues

Project description:Foxp3+ regulatory T cells (Tregs) are critical mediators of peripheral tolerance and immune homeostasis. Tregs that express the IL-33 receptor ST2 are enriched in peripheral nonlymphoid tissues and can exert a variety of tissue-specific functions from metabolic regulation within adipose tissue to skeletal muscle repair. However, the relationship between ST2+ and ST2- Tregs within and across different tissues remains unclear. To compare murine ST2- and ST2+ Tregs within and across tissues, we performed RNA sequencing (RNAseq) of ST2-CD44hi and ST2+CD44hi Tregs from blood, spleen, lungs, visceral adipose tissue (VAT), colon, and skin. RNAseq was also performed on ST2- CD44lo CD62L+ Tregs from the spleen and lungs. We found that the tissue microenvironment was the major factor shaping the transcriptome of Tregs across tissues. Across the tissues studied, Treg transcriptomes displayed an ordered hierarchy that may represent graded levels of activation or differentiation across tissues. We also identified a core signature that distinguished ST2+ Tregs from ST2- Tregs across tissues and a large number of differentially expressed genes between ST2- and ST2+ Tregs within individual tissues that could support the tissue-specific adaptation and function of ST2+ Tregs. In summary, our work highlights the unique, tissue-specific phenotype of ST2+ Tregs and reveals a core ST2+ Treg transcriptional signature shared across tissues.

2022-07-24 | GSE182322 | GEO

Pairwise comparison of ST2+ and ST2- FOXP3+ T cells derived from mouse intestinal tumors

Project description:Colorectal cancer (CRC) was induced in Foxp3/eGFP reporter mice by the azoxymethane/dextran sulphate sodium salt (AOM/DSS) protocol. Mice were injected i.p. with the procarcinogen AOM (12.5 mg/kg of body weight). After 1 week, mice received drinking water supplemented with 2.5% DSS for 5 to 7 days, followed by 2 weeks of regular water. The DSS administration was repeated twice with 2% DSS. Mice were sacrificed at week 11 and lamina propia lymphocytes (LPLs) from the colon were isolated. CD4+FOXP3+ (eGFP+) ST2+ or ST2- Tregs were separated from colonic LPLs of CRC induced mice using a FACSAria II cell sorter. Microarray analysis was performed to analyze if ST2+ FOXP3+ Tregs from the colon of CRC mice present a distinct transcription pattern compared to ST2- FOXP3+ Tregs. By this, the role of ST2 for Treg function during intestinal tumorigenesis should be characterized.

2019-05-31 | E-MTAB-6842 | biostudies-arrayexpress

RNA-seq profile of expanded human ST2-transduced Tregs cultured with IL-2 and TCR in the presence or absence of IL-33

Project description:Because of the extensive data in mice supporting the concept that ST2+ Tregs might have desirable therapeutic properties, including tissue repair function, high suppressive capacity, and enhanced stability, we engineered human blood Tregs to constitutively express ST2 (IL-33R). Here we used RNA sequencing to explore the effects of short-term culture with IL-33 on human ST2-transduced Tregs.

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Role of ST2 expession in regulatory Tcells on muscle regneration

Project description:We describe the effects of Treg ST2 expression on muscle regeneration. We compare regneration from cryo-injured tibialis anterior muscle from Foxp3-Cre/ST2-flox vs Foxp3-Cre mice 8 days post-injury. These analyses from whole muscle provide insight into the role of muscle Tregs in the context of regeneration. The tibialis anterior muscle from male Foxp3-Cre/ST2 flox or Foxp3-Cre/ST2 WT C57BL/6 mice (2 months old) were cryo-injured using a liquid nitrogen chilled metal probe for 8 seconds. 8 days post-injury whole muscle was harvested and snap frozen in liquid nitrogen. Whole muscle was then homogenized directly in TriZol and gene expression profiling was performed on Affymetrix Mouse Gene 1.0 ST Arrays.

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Project description:Regulatory T cells (Tregs) are enriched in the tumor microenvironment (TME) and suppress anti-tumor immunity. However, the origin of tumor-infiltrating (TI) Tregs and the molecular mechanism underlying their TME accumulation are poorly understood. Although IL-33 was reported to regulate the expansion and function of Tregs, its direct role on TI Tregs and its contribution to tumor progression remain uncertain. Firstly, we demonstrated TI Tregs were primarily thymus-derived. More importantly, we found using comparative transcriptome analysis that proliferation-related genes were prominently upregulated in TI Tregs compared with TI CD4+Foxp3− conventional T cells or splenic Tregs of same tumor-bearing mice. One of these genes, ST2, an interleukin-33 (IL-33) receptor, was identified as a potential factor driving Treg accumulation in the TME. Indeed, IL-33-directed ST2 signaling induced the preferential proliferation of TI Tregs and enhanced tumor progression, while genetic deletion of ST2 in Tregs limited their TME accumulation and delayed tumor growth. These data demonstrate the IL-33/ST2 axis in Tregs as one of the critical pathways for the preferential accumulation of thymus-derived Tregs in the TME and suggest the axis as a potential therapeutic target for cancer immunotherapy.

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Role of ST2 expession in regulatory Tcells on muscle regneration

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ST2+ T-regulatory Cells in Renal Inflammation and Fibrosis following Ischemic Kidney Injury

Project description:The role of IL-33 and its receptor ST2 in kidney injury is not well understood. This study demonstrates the importance of ST2 expression on the T-regulatory cells (Tregs) for the resolution of renal injury by suppressing inflammation and fibrosis. Treg-specific deletion of ST2, detrimentally impacted late outcomes of renal injury worsening the impairment of kidney function, inflammation, and fibrosis.

2024-08-27 | GSE272380 | GEO

Profiling of Tregs across tissues reveals plasticity in ST2 expression and hierarchies in tissue-specific phenotypes.

Project description:Foxp3+ regulatory T cells (Tregs) are critical mediators of peripheral tolerance and immune homeostasis and exert tissue-specific functions. In many nonlymphoid tissues, Tregs show enriched expression of the IL-33 receptor ST2. Through comprehensive profiling of murine ST2+ and ST2- Tregs, we found that Treg transcriptomes and phenotypes formed a hierarchical relationship across tissues. Only a small core signature distinguished ST2+ Tregs from ST2- Tregs across all tissues, and differences in transcriptional profiles were predominantly tissue-specific. We also identified unique, highly proliferative, circulating ST2+ Tregs with high migratory potential. In adoptive transfers, both ST2+ and ST2- Tregs seeded various host tissues and demonstrated plasticity in ST2 expression. Furthermore, Tregs from donor lungs were differentially recovered from host nonlymphoid tissues in an IL-33-dependent manner. In summary, our work identified tissue residency rather than ST2 expression as a primary driver of tissue Treg identity and highlights the unique, tissue-specific adaption of ST2+ Tregs.

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