New Insights on CD8(+) T Cells in Inflammatory Bowel Disease and Therapeutic Approaches.

New Insights on CD8(+) T Cells in Inflammatory Bowel Disease and Therapeutic Approaches.
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DOI:
10.3389/fimmu.2021.738762
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发表时间:
2021
影响因子:
7.3
通讯作者:
Däbritz J
Däbritz J
中科院分区:
医学2区
文献类型:
--
作者:
Casalegno Garduño R;Däbritz J

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CD8+ T细胞参与炎症性肠病(IBD)的发病机制,IBD是一种复杂的多因素慢性疾病。在这里,我们提出了目前的研究与CD8+ T细胞亚群的有争议的结果进行了概述,并讨论了一些可能的观点,他们在IBD的治疗价值。关于CD8+ T细胞在IBD中的作用的研究具有矛盾的结果,这可能与细胞的异质性有关。最近的数据表明,细胞毒性CD8+ T细胞(Tc1)和产生白细胞介素(IL)17的CD8+(Tc17)细胞有助于IBD的发病机制。此外,调节性CD8+ T细胞的亚群在炎症部位丰富,并且可以表现出促炎特征。组织驻留记忆CD8+ T细胞(Trm)的一些子集可能是免疫抑制剂,而其他可能是促炎性的。最后,耗尽的T细胞可能表明患者的积极结果。由于粘膜样品和足够的对照的有限可用性,在健康和IBD中不同的CD8+ T细胞亚群的功能和可塑性仍有待于在具有挑战性的领域进一步研究。
CD8+ T cells are involved in the pathogenesis of inflammatory bowel disease (IBD), a complex multifactorial chronic disease. Here, we present an overview of the current research with the controversial findings of CD8+ T cell subsets and discuss some possible perspectives on their therapeutic value in IBD. Studies on the role of CD8+ T cells in IBD have contradictory outcomes, which might be related to the heterogeneity of the cells. Recent data suggest that cytotoxic CD8+ T cells (Tc1) and interleukin (IL) 17-producing CD8+ (Tc17) cells contribute to the pathogenesis of IBD. Moreover, subsets of regulatory CD8+ T cells are abundant at sites of inflammation and can exhibit pro-inflammatory features. Some subsets of tissue resident memory CD8+ T cells (Trm) might be immunosuppressant, whereas others might be pro-inflammatory. Lastly, exhausted T cells might indicate a positive outcome for patients. The function and plasticity of different subsets of CD8+ T cells in health and IBD remain to be further investigated in a challenging field due to the limited availability of mucosal samples and adequate controls.
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