Targeting ROS-sensing Nrf2 potentiates anti-tumor immunity of intratumoral CD8⁺ T and CAR-T cells.

ABSTRACT: Cytotoxic T lymphocytes (CTLs) play a crucial role in cancer rejection. However, CTLs encounter dysfunction and exhaustion in the immunosuppressive tumor microenvironment (TME). Although the reactive oxygen species (ROS)-rich TME attenuates CTL function, the underlying molecular mechanism remains poorly understood. The nuclear factor erythroid 2-related 2 (Nrf2) is the ROS-responsible factor implicated in increasing susceptibility to cancer progression. Therefore, we examined how Nrf2 is involved in anti-tumor responses of CD8⁺ T and chimeric antigen receptor (CAR) T cells in the ROS-rich TME. Here, we demonstrated that tumor growth in Nrf2^-/- mice was significantly controlled and was reversed by T cell depletion and further confirmed that Nrf2 deficiency in T cells p

SUBMITTER: Jo Y 

PROVIDER: S-EPMC11573615 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature