Single-cell transcriptomic analysis defines the interplay between tumor cells, viral infection, and the microenvironment in nasopharyngeal carcinoma.

Abstract:

:Nasopharyngeal carcinoma (NPC) is an Epstein-Barr virus (EBV)-associated malignancy with a complex tumor ecosystem. How the interplay between tumor cells, EBV, and the microenvironment contributes to NPC progression and immune evasion remains unclear. Here we performed single-cell RNA sequencing on ~104,000 cells from 19 EBV+ NPCs and 7 nonmalignant nasopharyngeal biopsies, simultaneously profiling the transcriptomes of malignant cells, EBV, stromal and immune cells. Overall, we identified global upregulation of interferon responses in the multicellular ecosystem of NPC. Notably, an epithelial-immune dual feature of malignant cells was discovered and associated with poor prognosis. Functional experiments revealed that tumor cells with this dual feature exhibited a higher capacity for tumorigenesis. Further characterization of the cellular components of the tumor microenvironment (TME) and their interactions with tumor cells revealed that the dual feature of tumor cells was positively correlated with the expression of co-inhibitory receptors on CD8+ tumor-infiltrating T cells. In addition, tumor cells with the dual feature were found to repress IFN-γ production by T cells, demonstrating their capacity for immune suppression. Our results provide new insights into the multicellular ecosystem of NPC and offer important clinical implications.

journal_name

Cell Res

journal_title

Cell research

authors

Jin S,Li R,Chen MY,Yu C,Tang LQ,Liu YM,Li JP,Liu YN,Luo YL,Zhao Y,Zhang Y,Xia TL,Liu SX,Liu Q,Wang GN,You R,Peng JY,Li J,Han F,Wang J,Chen QY,Zhang L,Mai HQ,Gewurz BE,Zhao B,Young LS,Zhong Q,Bai F,

doi

10.1038/s41422-020-00402-8

subject

Has Abstract

pub_date

2020-11-01 00:00:00

pages

950-965

issue

11

eissn

1001-0602

issn

1748-7838

pii

10.1038/s41422-020-00402-8

journal_volume

30

pub_type

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