Molecular Cancer (Jan 2021)

Unraveling tumour microenvironment heterogeneity in nasopharyngeal carcinoma identifies biologically distinct immune subtypes predicting prognosis and immunotherapy responses

  • Yu-Pei Chen,
  • Jia-Wei Lv,
  • Yan-Ping Mao,
  • Xiao-Min Li,
  • Jun-Yan Li,
  • Ya-Qin Wang,
  • Cheng Xu,
  • Ying-Qin Li,
  • Qing-Mei He,
  • Xiao-Jing Yang,
  • Yuan Lei,
  • Jia-Yi Shen,
  • Ling-Long Tang,
  • Lei Chen,
  • Guan-Qun Zhou,
  • Wen-Fei Li,
  • Xiao-Jing Du,
  • Rui Guo,
  • Xu Liu,
  • Yuan Zhang,
  • Jing Zeng,
  • Jing-Ping Yun,
  • Ying Sun,
  • Na Liu,
  • Jun Ma

DOI
https://doi.org/10.1186/s12943-020-01292-5
Journal volume & issue
Vol. 20, no. 1
pp. 1 – 8

Abstract

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Abstract Currently, there is no strong evidence of the well-established biomarkers for immune checkpoint inhibitors (ICIs) in nasopharyngeal carcinoma (NPC). Here, we aimed to reveal the heterogeneity of tumour microenvironment (TME) through virtual microdissection of gene expression profiles. An immune-enriched subtype was identified in 38% (43/113) of patients, which was characterized by significant enrichment of immune cells or immune responses. The remaining patients were therefore classified as a non-Immune Subtype (non-IS), which exhibited highly proliferative features. Then we identified a tumour immune evasion state within the immune-enriched subtype (18/43, 42%), in which high expression of exclusion- and dysfunction-related signatures was observed. These subgroups were designated the Evaded and Active Immune Subtype (E-IS and A-IS), respectively. We further demonstrated that A-IS predicted favourable survival and improved ICI response as compared to E-IS and non-IS. In summary, this study introduces the novel immune subtypes and demonstrates their feasibility in tailoring immunotherapeutic strategies.

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