Abstract
Peripheral tolerance prevents autoimmune responses mediated by autoreactive T cells, and conventional dendritic cells (cDCs) can present tissue-specific antigen (TSA) and induce anergy and deletion of autoreactive T cells in local lymph nodes. Here, Joeris et al. examined the role of intestinal cDC1 presenting TSA derived from intestinal epithelial cells (IECs) in driving cross-tolerance of CD8+ T cells. cDC1 mediated peripheral tolerance by converting naïve CD8+ T cells to intestine-homing CCR9+ FoxP3+CD8+ Tregs, which involved programmed death ligand 1 (PD-L1), retinoic acid (RA), and transforming growth factor β (TGFβ) derived from intestinal cDC1. CD103 expression was needed for the tolerogenic function of these FoxP3+CD8+ Tregs. These findings highlight a role for cDC1-mediated induction of FoxP3+CD8+ Tregs in cross-tolerance to TSA in the intestine.
Original language | English |
---|---|
Article number | eabd3774 |
Journal | Science immunology |
Volume | 6 |
Issue number | 16 |
Number of pages | 15 |
DOIs | |
Publication status | Published - 2021 |