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PD-L1: expression regulation.


ABSTRACT: Programmed death-ligand 1 (PD-L1), expressed on the surface of tumor cells, can bind to programmed cell death-1 (PD-1) on T cells. The interaction of PD-1 and PD-L1 can inhibit T-cell responses by decreasing T-cell activity and accelerating their apoptosis. Various cancers express high levels of PD-L1 and exploit PD-L1/PD-1 signaling to evade T-cell immunity, and immunotherapies targeting the PD-1/PD-L1 axis have been shown to exert remarkable anti-tumor effects; however, not all tumor patients benefit from these therapies. Therefore, study of the mechanisms regulating PD-L1 expression are imperative. In this review, we explore regulation of PD-L1 expression in the contexts of gene transcription, signaling pathways, histone modification and remodeling, microRNAs, long noncoding RNAs, and post-translational modification. Current developments in studies of agents that block PD-L1 and correlations between immunotherapies targeting PD-1/PD-L1 and PD-L1 expression are also summarized. Our review will assist in understanding of PD-L1 expression regulation and discusses the implications of reported findings in cancer diagnosis and immunotherapy.

SUBMITTER: Zhou YJ 

PROVIDER: S-EPMC10205351 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature

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PD-L1: expression regulation.

Zhou Yu-Jie YJ   Li Guoli G   Wang Jiyin J   Liu Mengyuan M   Wang Zihan Z   Song Yu Y   Zhang Xulong X   Wang Xi X  

Blood science (Baltimore, Md.) 20230113 2


Programmed death-ligand 1 (PD-L1), expressed on the surface of tumor cells, can bind to programmed cell death-1 (PD-1) on T cells. The interaction of PD-1 and PD-L1 can inhibit T-cell responses by decreasing T-cell activity and accelerating their apoptosis. Various cancers express high levels of PD-L1 and exploit PD-L1/PD-1 signaling to evade T-cell immunity, and immunotherapies targeting the PD-1/PD-L1 axis have been shown to exert remarkable anti-tumor effects; however, not all tumor patients  ...[more]

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