Dynamic single-cell mapping unveils Epstein‒Barr virus-imprinted T-cell exhaustion and on-treatment response

Abstract Epstein‒Barr virus (EBV)-associated gastric cancer (GC) manifests an intriguing immunotherapy response. However, the cellular basis for EBV-imprinted tumour immunity and on-treatment response remains undefined. This study aimed to finely characterize the dynamic tumour immune contexture of human EBV (+) GC treated with immunochemotherapy by longitudinal scRNA-seq and paired scTCR/BCR-seq. EBV (+) GC exhibits an inflamed-immune phenotype with increased T-cell and B-cell infiltration. Immunochemotherapy triggers clonal revival and reinvigoration of effector T cells which step to determine treatment response. Typically, an antigen-specific ISG-15+CD8+ T-cell population is highly enriched in EBV (+) GC patients, which represents a transitory exhaustion state. Importantly, baseline intratumoural ISG-15+CD8+ T cells predict immunotherapy responsiveness among GC patients. Re-emerged clonotypes of pre-existing ISG-15+CD8+ T cells could be found after treatment, which gives rise to a CXCL13-expressing effector population in responsive EBV (+) tumours. However, LAG-3 retention may render the ISG-15+CD8+ T cells into a terminal exhaustion state in non-responsive EBV (+) tumours. In accordance, anti-LAG-3 therapy could effectively reduce tumour burden in refractory EBV (+) GC patients. Our results delineate a distinct implication of EBV-imprinted on-treatment T-cell immunity in GC, which could be leveraged to optimize the rational design of precision immunotherapy..

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:8

Enthalten in:

Signal Transduction and Targeted Therapy - 8(2023), 1, Seite 13

Sprache:

Englisch

Beteiligte Personen:

Miao-Zhen Qiu [VerfasserIn]
Chaoye Wang [VerfasserIn]
Zhiying Wu [VerfasserIn]
Qi Zhao [VerfasserIn]
Zhibin Zhao [VerfasserIn]
Chun-Yu Huang [VerfasserIn]
Wenwei Wu [VerfasserIn]
Li-Qiong Yang [VerfasserIn]
Zhi-Wei Zhou [VerfasserIn]
Yu Zheng [VerfasserIn]
Hong-Ming Pan [VerfasserIn]
Zexian Liu [VerfasserIn]
Zhao-Lei Zeng [VerfasserIn]
Hui-Yan Luo [VerfasserIn]
Feng Wang [VerfasserIn]
Feng-Hua Wang [VerfasserIn]
Si-Yu Yang [VerfasserIn]
Meng-Xing Huang [VerfasserIn]
Zhexiong Lian [VerfasserIn]
Haiyan Zhang [VerfasserIn]
Rui-Hua Xu [VerfasserIn]

Links:

doi.org [kostenfrei]
doaj.org [kostenfrei]
doi.org [kostenfrei]
Journal toc [kostenfrei]

Themen:

Biology (General)
Medicine
R

doi:

10.1038/s41392-023-01622-1

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

DOAJ091739217