Journal
MUCOSAL IMMUNOLOGY
Volume 15, Issue 1, Pages 64-73Publisher
ELSEVIER SCIENCE INC
DOI: 10.1038/s41385-021-00456-w
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Funding
- European Union H2020 ERA project [667824]
- La Caixa Foundation [100010434, LCF/PR/HR19/52160005]
- Fundacao para a Ciencia e a Tecnologia (FCT) [PD/BD/138847/2018]
- Fundação para a Ciência e a Tecnologia [PD/BD/138847/2018] Funding Source: FCT
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T cells located in non-lymphoid tissues, including CD8(+) Trm cells and CD4(+) Treg cells, have functions beyond immune defence, involving tissue homeostasis and repair. They form a multicellular communication network and have potential implications for future therapies.
T cells located in non-lymphoid tissues have come to prominence in recent years. CD8(+) tissue-resident memory (Trm) cells are important for tissue immune surveillance, provide an important line of defence against invading pathogens and show promise in cancer therapies. These cells differ in phenotype from other memory populations, are adapted to the tissue they home to where they found their cognate antigen and have different metabolic requirements for survival and activation. CD4(+) Foxp3(+) regulatory T (Treg) cells also consist of specialised populations, found in non-lymphoid tissues, with distinct transcriptional programmes. These cells have equally adapted to function in the tissue they made their home. Both Trm and Treg cells have functions beyond immune defence, involving tissue homeostasis, repair and turnover. They are part of a multicellular communication network. Intriguingly, occupying the same niche, Treg cells are important in the establishment of Trm cells, which may have implications to harness the immune surveillance and tissue homeostasis properties of Trm cells for future therapies.
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