Liver-resident memory T cells: life in lockdown.

Liver-resident memory T cells: life in lockdown.
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DOI:
10.1007/s00281-022-00932-w
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发表时间:
2022-11
影响因子:
9
通讯作者:
Maini, Mala K.
Maini, Mala K.
中科院分区:
医学1区
文献类型:
--
作者:
Pallett, Laura J.;Maini, Mala K.

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已经在肝脏中鉴定出记忆T细胞的子集,其具有组织驻留特征和长期“锁定”的能力。在这里,我们回顾他们是如何保留,并适应,肝脏微环境,包括其独特的解剖特征和代谢的挑战。我们描述了与其他本地细胞类型的潜在相互作用,需要更好地了解这种复杂的双向串扰。病原体或肿瘤抗原特异性组织驻留记忆T细胞(TRM)可以提供快速的前线免疫监视,我们审查的证据,这在嗜肝性感染的主要全球重要性,如肝炎B和疟疾和肝癌,如肝细胞癌。相反,TRM可以由促炎和代谢信号触发以介导旁观者组织损伤,在许多肝脏病理学中具有新兴作用。我们讨论了肝脏采样的必要性,以获得进入这些区室化T细胞的窗口,从而实现更准确的疾病监测和未来的局部靶向免疫治疗。
A subset of memory T cells has been identified in the liver with a tissue-resident profile and the capacity for long-term ‘lockdown’. Here we review how they are retained in, and adapted to, the hepatic microenvironment, including its unique anatomical features and metabolic challenges. We describe potential interactions with other local cell types and the need for a better understanding of this complex bidirectional crosstalk. Pathogen or tumour antigen-specific tissue-resident memory T cells (TRM) can provide rapid frontline immune surveillance; we review the evidence for this in hepatotropic infections of major worldwide importance like hepatitis B and malaria and in liver cancers like hepatocellular carcinoma. Conversely, TRM can be triggered by pro-inflammatory and metabolic signals to mediate bystander tissue damage, with an emerging role in a number of liver pathologies. We discuss the need for liver sampling to gain a window into these compartmentalised T cells, allowing more accurate disease monitoring and future locally targeted immunotherapies.
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