Exhausted T cells hijacking the cancer-immunity cycle: Assets and liabilities

Anna E. Brunell, Riitta Lahesmaa, Anu Autio, Anil K. Thotakura*

*Corresponding author for this work

Research output: Contribution to journalReview Article or Literature Reviewpeer-review

3 Citations (Scopus)
6 Downloads (Pure)

Abstract

T cell exhaustion is an alternative differentiation path of T cells, sometimes described as a dysfunction. During the last decade, insights of T cell exhaustion acting as a bottle neck in the field of cancer immunotherapy have undoubtedly provoked attention. One of the main drivers of T cell exhaustion is prolonged antigen presentation, a prerequisite in the cancer-immunity cycle. The umbrella term “T cell exhaustion” comprises various stages of T cell functionalities, describing the dynamic, one-way exhaustion process. Together these qualities of T cells at the exhaustion continuum can enable tumor clearance, but if the exhaustion acquired timeframe is exceeded, tumor cells have increased possibilities of escaping immune system surveillance. This could be considered a tipping point where exhausted T cells switch from an asset to a liability. In this review, the contrary role of exhausted T cells is discussed.

Original languageEnglish
Article number1151632
Number of pages13
JournalFrontiers in Immunology
Volume14
DOIs
Publication statusPublished - 14 Apr 2023
MoE publication typeA2 Review article in a scientific journal

Keywords

  • cancer-immunity cycle
  • functional adaption
  • immunotherapy
  • T cell dysfunction
  • T cell exhaustion

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