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Lymphatic-localized Treg-mregDC crosstalk limits antigen trafficking and restrains anti-tumor immunity [RNA-seq]

ABSTRACT: Lymphatic-localized Treg-mregDC crosstalk limits antigen trafficking and restrains anti-tumor immunity [RNA-seq]

PROVIDER: PRJNA980247 | ENA |

REPOSITORIES: ENA

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Lymphatic-localized Treg-mregDC crosstalk limits antigen trafficking and restrains anti-tumor immunity

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Project description:Tumor microenvironment (TME) plays critical roles in both tumor progression and immunotherapeutic efficacy. Here using single-cell RNA sequencing (scRNA-seq), we described the TME heterogeneity and found a specific state of CCL22+ dendritic cell (mregDC) cross talk close to regulatory T cells (Treg). We analyzed cell–cell communication mediated by ligand–receptor interactions and finally found that mregDCs probably attract Treg cells via chemotaxis and physically interact with them in tumor. Within this cross talk, Treg cells received activation signals from mregDCs and upregulated suppressive and adhesion molecules, including PD-1, ICOS, CTLA-4 and OX-40, further enhancing their interaction with mregDCs. In turn, the association of Treg cells with mregDCs restrained the trafficking of tumor antigen-bearing dendritic cells to draining mesenteric lymph nodes and thus dampened the presentation of tumor antigens to initiate anti-tumor immune responses in a cell contact dependent manner.

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

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Lymphatic-localized Treg-mregDC crosstalk limits antigen trafficking and restrains anti-tumor immunity [RNA-seq]

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Glycosylation Limits Forward Trafficking of the Tetraspan Membrane Protein PMP22

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SWI/SNF component ARID1A restrains pancreatic neoplasia formation [ChIP-seq]

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