CTLA-4 blockade drives loss of Treg stability in glycolysis-low tumors
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA688711 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13330946_1.fastq.gz | Fastqsanger.gz | |||
| SRR13330946_2.fastq.gz | Fastqsanger.gz | |||
| SRR13330947_1.fastq.gz | Fastqsanger.gz | |||
| SRR13330947_2.fastq.gz | Fastqsanger.gz | |||
| SRR13330948_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 38 |
Similar Datasets
Project description:CTLA-4 blockade drives loss of Treg stability in glycolysis-low tumors.
| PRJNA693857 | ENA
Project description:Here, we report the immune-mediated mechanisms underlying the improved activity of immune checkpoint blockade in glycolysis-defective tumor models.
2021-03-08 | GSE164051 | GEO
Project description:Here, we report the immune-mediated mechanisms underlying the improved activity of immune checkpoint blockade in glycolysis-defective tumor models.
2021-03-08 | GSE165278 | GEO
Project description:T cells receive numerous positive and negative signals during primary antigen encounter that control their proliferation and function, but how these signals are integrated to modulate T cell memory has not been fully characterized. In these studies, we demonstrate that combining seemingly opposite signals, CTLA-4 blockade and rapamycin-mediated mTOR inhibition, during in vivo T cell priming leads to both an increase in the frequency of memory CD8+ T cells and improved memory responses to tumors and bacterial challenges. This enhanced efficacy corresponds to increased early expansion and memory precursor differentiation of CD8+ T cells and increased mitochondrial biogenesis and spare respiratory capacity in memory CD8+ T cells in mice treated with anti-CTLA-4 and rapamycin during immunization. Collectively, these results reveal that mTOR inhibition cooperates with rather than antagonizes blockade of CTLA-4, promoting unrestrained effector function and proliferation and an optimal metabolic program for CD8+ T cell memory. Total RNA was isolated from FACS-sorted, antigen-specific CD8+T cells from different treatment conditions at 5 or 35 days after primary T cell activation
2015-01-31 | E-GEOD-63022 | biostudies-arrayexpress
Project description:Immune checkpoint blockade is able to achieve durable responses in a subset of patients, however we lack a satisfying comprehension of the underlying mechanisms of anti-CTLA-4 and anti-PD-1 induced tumor rejection. To address these issues we utilized mass cytometry to comprehensively profile the effects of checkpoint blockade on tumor immune infiltrates in human melanoma and murine tumor models. These analyses reveal a spectrum of tumor infiltrating T cell populations that are highly similar between tumor models and indicate that checkpoint blockade targets only specific subsets of tumor infiltrating T cell populations. Anti-PD-1 predominantly induces the expansion of specific tumor infiltrating exhausted-like CD8 T cell subsets. In contrast, anti-CTLA-4 induces the expansion of an ICOS+ Th1-like CD4 effector population in addition to engaging specific subsets of exhausted-like CD8 T cells. Thus, our findings indicate that anti-CTLA-4 and anti-PD-1 checkpoint blockade induced immune responses are driven by distinct cellular mechanisms.
2017-08-10 | GSE100808 | GEO
Project description:Immune checkpoint blockade is able to achieve durable responses in a subset of patients, however we lack a satisfying comprehension of the underlying mechanisms of anti-CTLA-4 and anti-PD-1 induced tumor rejection. To address these issues we utilized mass cytometry to comprehensively profile the effects of checkpoint blockade on tumor immune infiltrates in human melanoma and murine tumor models. These analyses reveal a spectrum of tumor infiltrating T cell populations that are highly similar between tumor models and indicate that checkpoint blockade targets only specific subsets of tumor infiltrating T cell populations. Anti-PD-1 predominantly induces the expansion of specific tumor infiltrating exhausted-like CD8 T cell subsets. In contrast, anti-CTLA-4 induces the expansion of an ICOS+ Th1-like CD4 effector population in addition to engaging specific subsets of exhausted-like CD8 T cells. Thus, our findings indicate that anti-CTLA-4 and anti-PD-1 checkpoint blockade induced immune responses are driven by distinct cellular mechanisms.
2017-08-10 | GSE100807 | GEO
Project description:Immune checkpoint blockade (ICB) therapy has demonstrated promising clinical results in oncology and is currently one of the most sought-after immunotherapies for tumors. However, there are a number of issues with ICB therapy, including low response rates and a lack of effective efficacy predictors. Gasdermin-mediated pyroptosis is a typical form of inflammatory death mode, but it is unclear whether ICB treatment can trigger its occurrence or whether gasdermin expression has any effect on the response rate to ICB treatment. Herein, we discovered that high expression of gasdermin protein was associated with a favorable tumor immune microenvironment and a favorable prognosis in head and neck squamous cell carcinoma (HNSCC), and taking advantage of the mouse HNSCC cell line 4MOSC1 (responsive to CTLA-4 blockade) and 4MOSC2 (resistant to CTLA-4 blockade) orthotopic models, we also demonstrated that CTLA-4 blockade treatment induced gasdermin-mediated pyroptosis of tumor cells and that the expression of gasdermin was positively associated with the effectiveness of CTLA-4 blocking treatment. Mechanistically, through RNA sequencing, flow cytometry, ELISA, Western blotting and RT-PCR, we discovered that CTLA-4 blockade activated CD8+ T cells in the tumor and increased the levels of the cytokines TNF-α and IFN-γ in the tumor microenvironment, and that TNF-α and IFN-γ synergistically activated the STAT1/IRF1 axis, inducing tumor cell pyroptosis and the release of large amounts of inflammatory substances and chemokines such as CXCL10.
2023-04-01 | GSE201367 | GEO
Project description:Regulatory CD4 T cells (Treg) confer non-overlapping functions in intestinal immune tolerance, tissue maintenance, repair, and regeneration. Cytokines and T cell receptor (TCR) signals, in combination with environmental cues, direct Treg proliferation and differentiation. However, how intestinal antigens shape intestinal Treg populations, their specialization and stability remain unknown. Here we show that only Treg bearing specific TCRs expand in the colon, resulting in highly oligoclonal Treg populations. Treg TCR repertoires are private, but crucially, when the same repertoire of polyclonal Treg was transferred into different recipients, the same clones expanded in each recipient, suggesting that cognate TCR-antigen interactions drive colonic Treg accumulation. Expanded Treg clones were correlated with Treg stability and individual transcriptional states that were maintained in different recipients irrespective of the presence or absence of intestinal inflammation. Our data suggest a role for antigen recognition in the selection and functional specialization of intestinal Treg. We speculate that the therapeutic use of Treg must take into account TCR context-mediated properties to optimise Treg stability and function in vivo.
2024-03-13 | GSE260965 | GEO
Project description:T cells receive numerous positive and negative signals during primary antigen encounter that control their proliferation and function, but how these signals are integrated to modulate T cell memory has not been fully characterized. In these studies, we demonstrate that combining seemingly opposite signals, CTLA-4 blockade and rapamycin-mediated mTOR inhibition, during in vivo T cell priming leads to both an increase in the frequency of memory CD8+ T cells and improved memory responses to tumors and bacterial challenges. This enhanced efficacy corresponds to increased early expansion and memory precursor differentiation of CD8+ T cells and increased mitochondrial biogenesis and spare respiratory capacity in memory CD8+ T cells in mice treated with anti-CTLA-4 and rapamycin during immunization. Collectively, these results reveal that mTOR inhibition cooperates with rather than antagonizes blockade of CTLA-4, promoting unrestrained effector function and proliferation and an optimal metabolic program for CD8+ T cell memory.
2015-01-31 | GSE63022 | GEO
Project description:Transcriptome analysis of human peripheral blood monocytes Combination therapy concurrently targeting PD-1 and CTLA-4 immune checkpoints leads to remarkable antitumor effects. Although both PD-1 and CTLA-4 dampen the T cell activation, the in vivo effects of these drugs in humans remain to be clearly defined. To better understand biologic effects of therapy, we analyzed blood/tumor tissue from patients undergoing single or combination immune checkpoint blockade. We show that blockade of CTLA-4, PD-1, or combination of the two leads to distinct genomic (changes in gene-expression profile) and functional signatures in vivo in purified human T cells and monocytes. RNA extracted from freshly isolated monocytes from peripheral blood of patients treated with either antiâPD-1 (n = 6), antiâCTLA-4 (n = 5), Combo therapy with antiâPD-1 and antiâCTLA-4 concurrently (Combo, n = 6), and Seq antiâPD-1 in patients with prior antiâCTLA-4 (Seq, n = 3) was analyzed using the Affymetrix GeneChip Human Transcriptome 2.0 exon array. No techinical replicates were performed.
2016-02-16 | E-GEOD-77924 | biostudies-arrayexpress