Single-cell transcriptomics of human T cells reveals tissue and activation signatures in health and disease.
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作者摘要（按来源许可复用）
Human T cells coordinate adaptive immunity in diverse anatomic compartments through production of cytokines and effector molecules, but it is unclear how tissue site influences T cell persistence and function. Here, we use single cell RNA-sequencing (scRNA-seq) to define the heterogeneity of human T cells isolated from lungs, lymph nodes, bone marrow and blood, and their functional responses following stimulation. Through analysis of >50,000 resting and activated T cells, we reveal tissue T cell signatures in mucosal and lymphoid sites, and lineage-specific activation states across all sites including distinct effector states for CD8 + T cells and an interferon-response state for CD4 + T cells. Comparing scRNA-seq profiles of tumor-associated T cells to our dataset reveals predominant activated CD8 + compared to CD4 + T cell states within multiple tumor types. Our results therefore establish a high dimensional reference map of human T cell activation in health for analyzing T cells in disease.
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