In:
International Journal of Cancer, Wiley, Vol. 151, No. 5 ( 2022-09), p. 797-808
Abstract:
Memory CD8 + T cells mature after antigen clearance and ultimately express CD8 protein at levels higher than those detected in effector CD8 + T cells. However, it is not clear whether engagement of CD8 in the absence of antigenic stimulation will result in the functional activation of T cells. Here, we found that CD8 antibody‐mediated activation of memory CD8 + T cells triggered T cell receptor (TCR) downstream signaling, enhanced T cell‐mediated cytotoxicity and promoted effector cytokine production in a glucose‐ and glutamine‐dependent manner. Furthermore, pretreatment of memory CD8 + T cells with an agonistic anti‐CD8 antibody enhanced their tumoricidal activity in vitro and in vivo. From these studies, we conclude that CD8 agonism activates glucose and glutamine metabolism in memory T cells and enhances the efficacy of memory T cell‐based cancer immunotherapy.
Type of Medium:
Online Resource
ISSN:
0020-7136
,
1097-0215
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
218257-9
detail.hit.zdb_id:
1474822-8
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