Li Yujie, Wu Dengqiang, Yang Xuejia, Zhou Sufang
Department of Biochemistry and Molecular Biology, School of Pre-Clinical Science, Guangxi Medical University, Nanning, China.
National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, China.
Front Oncol. 2021 Sep 17;11:723888. doi: 10.3389/fonc.2021.723888. eCollection 2021.
Memory T cells include T memory stem cells (T) and central memory T cells (T). Compared with effector memory T cells (T) and effector T cells (T), they have better durability and anti-tumor immunity. Recent studies have shown that although T has excellent self-renewal ability and versatility, if it is often exposed to antigens and inflammatory signals, T will behave as a variety of inhibitory receptors such as PD-1, TIM-3 and LAG-3 expression, and metabolic changes from oxidative phosphorylation to glycolysis. These changes can lead to the exhaustion of T cells. Cumulative evidence in animal experiments shows that it is the least differentiated cell in the memory T lymphocyte system and is a central participant in many physiological and pathological processes in humans. It has a good clinical application prospect, so it is more and more important to study the factors affecting the formation of T. This article summarizes and prospects the phenotypic and functional characteristics of T, the regulation mechanism of formation, and its application in treatment of clinical diseases.
记忆性T细胞包括记忆性T干细胞(Tscm)和中枢记忆性T细胞(Tcm)。与效应记忆性T细胞(Tem)和效应性T细胞(Teff)相比,它们具有更好的持久性和抗肿瘤免疫力。最近的研究表明,尽管Tscm具有出色的自我更新能力和多功能性,但如果经常暴露于抗原和炎症信号中,Tscm会表现出诸如PD-1、TIM-3和LAG-3等多种抑制性受体的表达,以及从氧化磷酸化到糖酵解的代谢变化。这些变化会导致T细胞耗竭。动物实验中的累积证据表明,它是记忆性T淋巴细胞系统中分化程度最低的细胞,是人类许多生理和病理过程的核心参与者。它具有良好的临床应用前景,因此研究影响Tscm形成的因素越来越重要。本文对Tscm的表型和功能特征、形成的调控机制及其在临床疾病治疗中的应用进行综述和展望。