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PD-L1 signaling is essential in regulating T cell function and keeping the balance of tumor microenvironment, but its role in modifying TCR-T cell cytotoxicity remains unknown. MART-1-specific TCR-T cells (TCR-T MART-1 ) were stimulated by MEL-526 tumor cells expressing different proportions of PD-L1 and used to perform cytotoxicity assays and single-cell RNA sequencing. Percentage changes of different specific cell clusters were analyzed. The percentage of cluster HLA-DR + CD38 + CD8 + was upregulated after antigen stimulation, and tumor PD-L1 modified TCR-T cell function through downregulating the percentages of HLA-DR + CD28 + CD8 + and HLA-DR + CD38 + CD8 + subsets which were higher in TCR-T MART-1 than in T null .
Renpeng Ding. 2020. \u201cRegulation of Specific Cell Clusters in TCR-T Cells Responding to Differential Expression of Tumor PD-L1\u201d. Global Journal of Medical Research - F: Diseases GJMR-F Volume 20 (GJMR Volume 20 Issue F8): .
Crossref Journal DOI 10.17406/gjmra
Print ISSN 0975-5888
e-ISSN 2249-4618
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Total Score: 138
Country: China
Subject: Global Journal of Medical Research - F: Diseases
Authors: Renpeng Ding, Shang Liu, Huanyi Chen, Bin Kang, Radoje Drmanac, Ying Gu, Xuan Dong, Qianqian Gao (PhD/Dr. count: 0)
View Count (all-time): 151
Total Views (Real + Logic): 2230
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Publish Date: 2020 08, Thu
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PD-L1 signaling is essential in regulating T cell function and keeping the balance of tumor microenvironment, but its role in modifying TCR-T cell cytotoxicity remains unknown. MART-1-specific TCR-T cells (TCR-T MART-1 ) were stimulated by MEL-526 tumor cells expressing different proportions of PD-L1 and used to perform cytotoxicity assays and single-cell RNA sequencing. Percentage changes of different specific cell clusters were analyzed. The percentage of cluster HLA-DR + CD38 + CD8 + was upregulated after antigen stimulation, and tumor PD-L1 modified TCR-T cell function through downregulating the percentages of HLA-DR + CD28 + CD8 + and HLA-DR + CD38 + CD8 + subsets which were higher in TCR-T MART-1 than in T null .
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