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Blood-Tumor overlapping TCR repertoire predicts the clinical responses of PD-1 blockade in patients with gastrointestinal cancer[RNA-Seq]

ABSTRACT: Blood-Tumor overlapping TCR repertoire predicts the clinical responses of PD-1 blockade in patients with gastrointestinal cancer[RNA-Seq]

PROVIDER: PRJNA646628 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12234300.fastq.gz	Fastqsanger.gz
	SRR12234301.fastq.gz	Fastqsanger.gz
	SRR12234302.fastq.gz	Fastqsanger.gz
	SRR12234303.fastq.gz	Fastqsanger.gz
	SRR12234304.fastq.gz	Fastqsanger.gz

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Blood-Tumor overlapping TCR repertoire predicts the clinical responses of PD-1 blockade in patients with gastrointestinal cancer [TCR-Seq]

Project description:As the anti-PD-1 monoclonal antibody (mAb) becomes to be used in many types of cancers, the needs for the predictive biomarker of PD-1 blockade are growing. T cell receptor (TCR) repertoire—which reflects the anti-tumor T-cell responses based on the antigen specificity—is a potential biomarker of cancer immunotherapy. Here, we analyzed the TCR repertoire of patients with advanced gastrointestinal cancer and explored its association with clinical responses.

2021-07-13 | GSE154536 | GEO

Blood-Tumor overlapping TCR repertoire predicts the clinical responses of PD-1 blockade in patients with gastrointestinal cancer [TCR-Seq]

Project description:Blood-Tumor overlapping TCR repertoire predicts the clinical responses of PD-1 blockade in patients with gastrointestinal cancer [TCR-Seq]

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Blood-Tumor overlapping TCR repertoire predicts the clinical responses of PD-1 blockade in patients with gastrointestinal cancer[RNA-Seq]

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Project description:Blood-Tumor overlapping TCR repertoire predicts the clinical responses of PD-1 blockade in patients with gastrointestinal cancer

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TCR repertoire analysis revealed the highly conserved TCR repertoire in the bilateral tumor in mice

Project description:Temporal analysis of T-cell receptor (TCR) repertoire has been used to monitor treatment-induced changes in antigen-specific T cells in patients with cancer. However, lack of experimental model that allows the temporal analysis of TCR repertoire in same individual in homogeneous population limit the understanding of causal relationship between changes in TCR repertoire and antitumor responses. A bilateral tumor model, in which tumor cells were inoculated into the bilateral backs of mice, can be used for temporal analysis in TCR repertoire. In this study, we examined the prerequisite for this strategy: TCR repertoire are conserved between the bilateral tumor with same growth rate. The bilateral tumors with equivalent tumor size and draining lymph nodes (dLN) were collected 13 days after the tumor inoculation to analyze the TCR repertoire of CD4+ and CD8+ T cells. Most of the tumor-infiltrating T-cell clones were highly conserved between the bilateral tumors, and the extent of clonal expansion was equivalent. In addition, the similarity between bilateral tumors were equivalent to the heterogeneity in one side of the tumor. The similarity of TCR repertoire in the bilateral dLN was markedly lower than that of the tumor, suggesting that tumor-reactive T-cell clones induced independently in each dLN were integrated during recirculation and then infiltrated the tumor. These findings suggest that our bilateral tumor model is suitable for temporal monitoring of TCR repertoire to evaluate temporal and treatment-induced changes in tumor-reactive T-cell clones.

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Blood-Tumor overlapping TCR repertoire predicts the clinical responses of PD-1 blockade in patients with gastrointestinal cancer

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

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Malt1PD TCR repertoire

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