T Cell Dysfunction and Exhaustion in Cancer

Zhen Zhang, Shasha Liu, Bin Zhang, Liang Qiao, Yi Zhang, Yi Zhang

Research output: Contribution to journalReview article

2 Scopus citations

Abstract

Tumor immunotherapy is a promising therapeutic strategy for patients with advanced cancers. T cells are key mediators of antitumor function that specifically recognize and react to tumor-expressing antigens and have proven critical for cancer immunotherapy. However, T cells are not as effective against cancer as expected. This is partly because T cells enter a dysfunctional or exhausted state, which is characterized by sustained expression of inhibitory receptors and a transcriptional state distinct from that of functional effector or memory T cells. T cell dysfunction induces the out of control of tumors. Recently, T cell dysfunction has been investigated in many experimental and clinical settings. The molecular definition of T cell dysfunction and the underlying causes of the T cell dysfunction has been advanced regardless of the fact that the pathways involved are not well elucidated, which proposing promising therapeutic opportunities in clinic. In this review, we will discuss the recent advances in the molecular mechanisms that affect TME and induce T cell dysfunction, and the development of promising immunotherapies to counteract the mechanisms of tumor-induced T cell dysfunction. Better understanding these underlying mechanisms may lead to new strategies to improve the clinical outcome of patients with cancer.

Original languageEnglish (US)
Article number17
JournalFrontiers in Cell and Developmental Biology
Volume8
DOIs
StatePublished - Feb 11 2020

Keywords

  • cancer immunotherapy
  • extrinsic factors
  • intrinsic factors
  • T cells dysfunction
  • tumor microenvironment

ASJC Scopus subject areas

  • Developmental Biology
  • Cell Biology

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