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Ovarian cancer immunogenicity is governed by a narrow subset of progenitor tissue-resident memory T-cells

ABSTRACT: Ovarian cancer immunogenicity is governed by a narrow subset of progenitor tissue-resident memory T-cells

PROVIDER: PRJNA800786 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17381621_1.fastq.gz	Fastqsanger.gz
	SRR17381621_2.fastq.gz	Fastqsanger.gz
	SRR17381622.fastq.gz	Fastqsanger.gz
	SRR17381623_1.fastq.gz	Fastqsanger.gz
	SRR17381623_2.fastq.gz	Fastqsanger.gz

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Ovarian cancer immunogenicity is governed by a narrow subset of progenitor tissue-resident memory T cells.

Project description:Despite repeated associations between T cell infiltration and outcome, human ovarian cancer remains poorly responsive to immunotherapy. We report that the hallmarks of tumor recognition in ovarian cancer-infiltrating T cells are primarily restricted to tissue-resident memory (TRM) cells. Single-cell RNA/TCR/ATAC sequencing of 83,454 CD3+CD8+CD103+CD69+ TRM cells and immunohistochemistry of 122 high-grade serous ovarian cancers shows that only progenitor (TCF1low) tissue-resident T cells (TRMstem cells), but not recirculating TCF1+ T cells, predict ovarian cancer outcome. TRMstem cells arise from transitional recirculating T cells, which depends on antigen affinity/persistence, resulting in oligoclonal, trogocytic, effector lymphocytes that eventually become exhausted. Therefore, ovarian cancer is indeed an immunogenic disease, but that depends on ∼13% of CD8+ tumor-infiltrating T cells (∼3% of CD8+ clonotypes), which are primed against high-affinity antigens and maintain waves of effector TRM-like cells. Our results define the signature of relevant tumor-reactive T cells in human ovarian cancer, which could be applicable to other tumors with unideal mutational burden.

| S-EPMC9096229 | biostudies-literature

Ovarian cancer immunogenicity is governed by a narrow subset of progenitor tissue-resident memory T-cells

Project description:This SuperSeries is composed of the SubSeries listed below.

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Reciprocal Transcription Factor Networks Govern Tissue-Resident ILC3 Subset Function and Identity

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Project description:Tissue-resident macrophages are a diverse population of cells that perform specialized functions including sustaining tissue homeostasis and tissue surveillance. Here we report an interstitial subset of CD169+ lung-resident macrophages that are transcriptionally and developmentally distinct from alveolar macrophages (AMs). They are primarily localized around the airways and are found in close proximity to the sympathetic nerves located in the bronchovascular bundle. These nerve- and airway-associated macrophages (NAMs) are tissue-resident, yolk sac-derived, self-renewing, and do not require CCR2+ monocytes for development or maintenance. Unlike AMs, the development of NAMs requires CSF1, but not GM-CSF. Bulk population and single cell transcriptome analysis indicated that NAMs are distinct from other lung resident macrophage subsets and highly express immunoregulatory genes under steady state and inflammatory conditions. NAMs proliferated robustly following influenza infection and activation with the TLR ligand poly I:C, and in their absence, the inflammatory response was augmented resulting in excessive production of inflammatory cytokines and innate immune cell infiltration. Overall, our study provides insights into a distinct subset of airway-associated pulmonary macrophages that function to maintain immune and tissue homeostasis.

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Identification of a nerve-associated, lung-resident interstitial macrophage subset with distinct localization and immunoregulatory properties [bulk-seq]

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A subset of temporary resident cardiac macrophages induced by myocardial infarction limits adverse ventricular remodeling

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Expression data from mouse embryo (E5) cultured in the narrow and wide cavity

Project description:The mouse anterior-posterior (A-P) axis polarization is preceded by formation of the distal visceral endoderm (DVE). However, the mechanism of the emergence of DVE cells is not well understood. Here, we show by in vitro culturing of embryos immediately after implantation in micro-fabricated cavities (narrow; 90 micro-meter, wide; 180 miro-meter in diameter) that the external mechanical cues exerted on the embryo, i.e. cultured in the narrow cavity, are crucial for DVE formation as well as elongated egg cylinder shape. This implies that these developmental events immediately after implantation are not simply embryo-autonomous processes but require extrinsic mechanical factors. Further whole genome-wide gene expression profiles with DNA microarray revealed that no significant difference of transcripts were evident with or without mechanical cues except DVE-related markers. Thus, we propose that external mechanical cues rather than not specific molecular pathways can trigger the establishment of the A-P axis polarization, which is one of the fundamental proccesses of mammalian embryogenesis. To identify the differences between the embryos cultured with or without external mechanical cues, we collected mouse embryos at E5.0 and cultured in the narrow (90 micro-meter in diameter) or the wide (180 micro-meter in diameter) cavities for 8 hours for RNA extraction and hybridization on Affymetrix microarrays. Arrays were performed using Affymetrix mouse Gene 1.0 ST arrays. Analysis was performed on three biological replicates of the mouse embryos cultured in the narrow and wide cavities for 8 hours.

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Kidney-resident CD8 T cells downregulate IL-18R during maturation

Project description:Using the expression of IL-18 receptor (CD218) as a surface marker, CD69+ kidney-resident CD8 T cells can be separated into two subsets. Transcriptional analysis suggests that IL-18R low subset represents the mature tissue-resident T cells

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