| First Author | Borges da Silva H | Year | 2020 |
| Journal | Immunity | Volume | 53 |
| Issue | 1 | Pages | 158-171.e6 |
| PubMed ID | 32640257 | Mgi Jnum | J:305048 |
| Mgi Id | MGI:6693962 | Doi | 10.1016/j.immuni.2020.06.010 |
| Citation | Borges da Silva H, et al. (2020) Sensing of ATP via the Purinergic Receptor P2RX7 Promotes CD8(+) Trm Cell Generation by Enhancing Their Sensitivity to the Cytokine TGF-beta. Immunity 53(1):158-171.e6 |
| abstractText | Tissue-resident memory (Trm) CD8(+) T cells mediate protective immunity in barrier tissues, but the cues promoting Trm cell generation are poorly understood. Sensing of extracellular adenosine triphosphate (eATP) by the purinergic receptor P2RX7 is needed for recirculating CD8(+) T cell memory, but its role for Trm cells is unclear. Here we showed that P2RX7 supported Trm cell generation by enhancing CD8(+) T cell sensing of TGF-beta, which was necessary for tissue residency. P2RX7-deficient Trm cells progressively decayed in non-lymphoid tissues and expressed dysregulated Trm-specific markers. P2RX7 was required for efficient re-expression of the receptor TGF-betaRII through calcineurin signaling. Forced Tgfbr2 expression rescued P2RX7-deficient Trm cell generation, and TGF-beta sensitivity was dictated by P2RX7 agonists and antagonists. Forced Tgfbr2 also rescued P2RX7-deficient Trm cell mitochondrial function. Sustained P2RX7 signaling was required for long-term Trm cell maintenance, indicating that P2RX7 signaling drives induction and CD8(+) T cell durability in barrier sites. |
