Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Tumor-Infiltrating Regulatory T Cell Accumulation in the Tumor Microenvironment is Mediated by IL33/ST2 Signaling

ABSTRACT: 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.

ORGANISM(S): Mus musculus

PROVIDER: GSE152022 | GEO | 2020/08/12

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

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.

2019-02-04 | GSE117481 | GEO

Differential roles of TSLP and IL-33 in regulation of Treg cells in progression of colorectal cancer

Project description:Recruitment of regulatory T cells (Tregs) to tumors is a hallmark of cancer progression. However, the role of epithelial cell-derived cytokines in regulation of Treg cells in colorectal cancers is not fully understood. We found a subset of Tregs co-expressing the receptors for thymic stromal lymphopoietin (TSLP) and IL-33 (TSLPR+ST2+ Tregs) was increased in colorectal tumors in humans and mice. This Treg subset expressed high levels of CTLA-4 and PD-1, and TSLPR signaling regulated the expression of CTLA-4 and number of TSLPR+ST2+ Tregs. Treg-specfic deletion of TSLPR resulted in a reduction in tumor number and size, with concomitant increase of Th1 cells in tumors. Similarly, blockade of TSLP effectively inhibited progression of colorectal tumors. On the other hand, TSLPR-ST2+ Tregs highly express Tgfb1 and Pdcd,1 which have been shown to suppress CD8+ T cell immune responses. Collectively, TSLP and IL-33 differentially regulate subsets of Tregs in the progression of colorectal tumor. These data suggest that TSLPR+ST2+ Treg cells are potentially a biomarker, and a therapeutic target for CRC.

2021-12-22 | GSE173124 | GEO

Inhibition of PARP11 inactivates tumor-infiltrating regulatory T cells and improves the efficacy of immunotherapies.

Project description:Tumor-infiltrating regulatory T cells (TI-Tregs) elicit immunosuppressive effects in the tumor microenviroment (TME) leading to accelerated tumor growth and resistance to immunotherapies against solid tumors. Here we demonstrate that Poly-(ADP-ribose)-polymerase-11 (PARP11) acts as an essential regulator of TI-Tregs regulatory and protumorigenic activities. Expression of PARP11 correlated with TI-Treg infiltration and poor responses to immune checkpoint blockade (ICB) in human cancer patients. PARP11 was induced in the TI-Treg cells by tumor-derived factors including adenosine and prostaglandin E2. Knockout of PARP11 in the cells of the TME or treatment of tumor-bearing mice with selective PARP11 inhibitor ITK7 inactivated TI-Treg cells and reinvigorated anti-tumor immune responses. Accordingly, ITK7 decelerated tumor growth and significantly increased the efficacy of anti-tumor immunotherapies including ICB and adoptive transfer of CAR T cells. These results characterize PARP11 as a key driver of TI-Treg activities and a major regulator of immunosuppressive TME and argue for targeting PARP11 to augment anti-cancer immunotherapies.

2023-12-07 | GSE249299 | GEO

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

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

RNA-Sequencing of ST2+ Treg cells in response to IL-33 stimulation

Project description:The effects of IL-33 on ST2+ Treg cells were not studied thouroughly. We FACS-sorted in vitro expanded ST2+ Treg cells from C57BL/6 Foxp3-IRES-mRFP (B6 FIR) mice. We next used RNA-seq techonology to define how recombinant IL-33 (rIL-33) may impact mouse Treg by to assessing the transcriptome of IL-33-stimulated ST2+ Treg cells compared to that of untreated ST2+ Treg cells. Our data revealed that ST2+ Treg stimulated with rIL-33 for 6 hours exhibited increased expression of Il10 and Il13 compared to unstimulated ST2+ Treg cells.

2019-05-17 | GSE123922 | GEO

Gene expression profile of RAW264.7 monocytes treated with or without IL-33

Project description:Molecular mechanisms underlying the cancer stroma in metastasis is largely unknown. Here we show that cancer-associated fibroblasts (CAFs) produce high levels of IL-33 that acted on tumor-associated macrophages (TAMs) to induce the M1 to M2 transition. Genome profiling of metastasis-related genes in the IL-33-stimulated TAMs showed a > 200-fold increase of metalloproteinase 9 (MMP9). Signaling analysis demonstrated the IL-33-ST2-NFkB-MMP9-laminin pathway that mediates cancer metastasis. In mouse and human fibroblast-rich pancreatic cancers, genetic deletion of IL-33, ST2 and MMP9 markedly blocked metastasis. Pharmacological inhibition of NFkB and MMP9 also blocked cancer metastasis. Deletion of IL-33, ST2 and MMP9 restored laminin, a key basement membrane component associated to tumor microvessels. Together, our data provide novel mechanistic insights on the IL-33-NFkB-MMP9-laminin axis that mediates the CAF-TAM-committed cancer metastasis. Thus, targeting the CAF-TAM-vessel interaction provides an outstanding therapeutic opportunity for cancer treatment.

2018-11-30 | GSE97657 | GEO

IL-33 signaling alters regulatory T cell diversity in support of tumor development [2014]

Project description:Regulatory T cells (Tregs) can impair anti-tumor immune responses and are associated with poor prognosis in multiple cancer types. Tregs in human tumors span diverse transcriptional states distinct from those of peripheral Tregs, but their contribution to tumor development remains unknown. Here, we use single cell RNA-Seq to longitudinally profile dynamic shifts in the distribution of Tregs in a genetically-engineered mouse model of lung adenocarcinoma. In this model, interferon-responsive Tregs are more prevalent early in tumor development, while a specialized effector phenotype characterized by enhanced expression of the interleukin 33 receptor ST2 is predominant in advanced disease. Treg-specific deletion of ST2 alters the evolution of effector Treg diversity, increases infiltration of CD8+ T cells into tumors, and decreases tumor burden. Our study shows that ST2 plays a critical role in Treg-mediated immunosuppression in cancer, highlighting potential paths for therapeutic intervention.

2019-12-03 | GSE139231 | GEO

IL-33 signaling alters regulatory T cell diversity in support of tumor development [2018]

2019-12-03 | GSE139229 | GEO

IL-33 signaling alters regulatory T cell diversity in support of tumor development

2019-12-03 | GSE140431 | GEO