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RNA-Seq of CD8+ T cell subsets in B16-GP33 tumor

ABSTRACT: RNA-Seq of CD8+ T cell subsets in B16-GP33 tumor

PROVIDER: PRJNA613639 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11357341_1.fastq.gz	Fastqsanger.gz
	SRR11357341_2.fastq.gz	Fastqsanger.gz
	SRR11357342_1.fastq.gz	Fastqsanger.gz
	SRR11357342_2.fastq.gz	Fastqsanger.gz
	SRR11357343_1.fastq.gz	Fastqsanger.gz

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RNA-Seq of CD8+ T cell subsets in B16-GP33 tumor

Project description:Tissue-resident memory CD8+ T cells (Trm) provide host protection through continuous surveillance of non-lymphoid tissues. While the relevance of Trm in diverse diseases ranging from infection to cancer is appreciated, the development and functional heterogeneity of Trm remain poorly understood. Using single-cell RNA-sequencing (scRNA-seq) and genetic reporter mice, we identified discrete lineages of intestinal antigen-specific CD8+ T cells, including a Blimp1hiId3lo tissue-resident effector cell population most prominent in the early phase of acute viral and bacterial infections, and a molecularly distinct Blimp1loId3hi tissue-resident memory population that subsequently accumulated at later infection timepoints. These distinct Trm populations where characterized by unique transcriptional programs including differential roles for transcriptional regulators Blimp1, T-bet, Id2, and Id3 in supporting and maintaining intestinal Trm heterogeneity during infection. Extending our analysis to malignant tissue, we also identified discrete populations of effector-like and memory-like CD8+ T cell populations with tissue-resident gene-expression signatures within tumors that shared features of terminally-exhausted and progenitor-exhausted T cells, respectively. Clarification of CD8+ T cell ontogeny and heterogeneity in non-lymphoid tissues holds broad implications for enhancing vaccination and immunotherapy approaches.

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scRNA-seq comparison of B16-GP33 tumor-infiltrating immune cells from IgG, anti-PD-1, anti-PSGL-1, or combination anti-PD-1 and anti-PSGL-1 treated mice

Project description:We use scRNA-seq to show the differences in tumor-infiltrating immune cells among IgG, anti-PD-1, anti-PSGL-1, and combination anti-PD-1 and anti-PSGL-1 treated mice. We show that anti-PSGL-1 treatment resulted in an increase in neutrophil and T cells, anti-PD-1 treatment resulted in an increase in macrophages, and the combination resulted in an increase in T cells and macrophages when compared to the tumors of IgG treated mice. Additionally, we show that Tregulatory cells are decreased in the tumors of anti-PSGL-1 and combination treated mice. Further, we find that anti-PSGL-1 treated CD8 T cells show upregulation of activation and survival genes, while combination treatment increased effector gene expression in CD8 T cells. Both anti-PSGL-1 treatment and combination treatment increase effector gene expression in CD4 T cells when compared to IgG. This scRNA-seq study shows the impact of IgG, anti-PD-1, anti-PSGL-1, and combination anti-PSGL-1 and anti-PD-1 antibody tteatment on tumor-infiltrating immune cells in B16-GP33 melnoma tumor bearing mice.

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2016-09-01 | E-GEOD-73384 | biostudies-arrayexpress

10X single-cell RNASeq profiling of tumor-infiltrating CD8+ T-cells from B16-OVA mouse melanoma tumors

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