Article ; Online: CD8 T-cell heterogeneity during T-cell exhaustion and PD-1-targeted immunotherapy.
2022 Volume 34, Issue 11, Page(s) 571–577
Abstract: Persistent antigenic stimulation results in loss of effector function or physical deletion of antigen-specific CD8 T cells. This T-cell state is called T-cell exhaustion and occurs during chronic infection and cancer. Antigen-specific CD8 T cells during ... ...
Abstract | Persistent antigenic stimulation results in loss of effector function or physical deletion of antigen-specific CD8 T cells. This T-cell state is called T-cell exhaustion and occurs during chronic infection and cancer. Antigen-specific CD8 T cells during T-cell exhaustion express the inhibitory receptor PD-1, the expression of which plays a major role in T-cell dysfunction. PD-1 blockade re-invigorates CD8 T-cell immunity and has been proven effective against many different types of human cancer. To further improve the efficacy of PD-1-targeted immunotherapy in cancer patients, a better understanding of T-cell exhaustion is required. Recent studies have revealed that antigen-specific CD8 T cells during T-cell exhaustion are heterogeneous and have also uncovered the detailed mechanisms for PD-1-targeted immunotherapy. Here, we review the CD8 T-cell subsets that arise during T-cell exhaustion, the lineage relationship among these individual subsets and the role of each subset in PD-1 blockade. Also, we discuss potential strategies to enhance the efficacy of PD-1-targeted immunotherapy. |
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MeSH term(s) | Antigens/metabolism ; CD8-Positive T-Lymphocytes ; Humans ; Immunologic Factors ; Immunotherapy ; Neoplasms ; Programmed Cell Death 1 Receptor ; T-Lymphocyte Subsets |
Chemical Substances | Antigens ; Immunologic Factors ; Programmed Cell Death 1 Receptor |
Language | English |
Publishing date | 2022-07-28 |
Publishing country | England |
Document type | Journal Article ; Review ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't |
ZDB-ID | 1013745-2 |
ISSN | 1460-2377 ; 0953-8178 |
ISSN (online) | 1460-2377 |
ISSN | 0953-8178 |
DOI | 10.1093/intimm/dxac038 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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