ILC2s amplify PD-1 blockade by activating tissue-specific cancer immunity Journal Article
| Authors: | Moral, J. A.; Leung, J.; Rojas, L. A.; Ruan, J.; Zhao, J.; Sethna, Z.; Ramnarain, A.; Gasmi, B.; Gururajan, M.; Redmond, D.; Askan, G.; Bhanot, U.; Elyada, E.; Park, Y.; Tuveson, D. A.; Gönen, M.; Leach, S. D.; Wolchok, J. D.; DeMatteo, R. P.; Merghoub, T.; Balachandran, V. P. |
| Article Title: | ILC2s amplify PD-1 blockade by activating tissue-specific cancer immunity |
| Abstract: | Group 2 innate lymphoid cells (ILC2s) regulate inflammation and immunity in mammalian tissues1,2. Although ILC2s are found in cancers of these tissues3, their roles in cancer immunity and immunotherapy are unclear. Here we show that ILC2s infiltrate pancreatic ductal adenocarcinomas (PDACs) to activate tissue-specific tumour immunity. Interleukin-33 (IL33) activates tumour ILC2s (TILC2s) and CD8+ T cells in orthotopic pancreatic tumours but not heterotopic skin tumours in mice to restrict pancreas-specific tumour growth. Resting and activated TILC2s express the inhibitory checkpoint receptor PD-1. Antibody-mediated PD-1 blockade relieves ILC2 cell-intrinsic PD-1 inhibition to expand TILC2s, augment anti-tumour immunity, and enhance tumour control, identifying activated TILC2s as targets of anti-PD-1 immunotherapy. Finally, both PD-1+ TILC2s and PD-1+ T cells are present in most human PDACs. Our results identify ILC2s as anti-cancer immune cells for PDAC immunotherapy. More broadly, ILC2s emerge as tissue-specific enhancers of cancer immunity that amplify the efficacy of anti-PD-1 immunotherapy. As ILC2s and T cells co-exist in human cancers and share stimulatory and inhibitory pathways, immunotherapeutic strategies to collectively target anti-cancer ILC2s and T cells may be broadly applicable. © 2020, The Author(s), under exclusive licence to Springer Nature Limited. |
| Keywords: | adult; controlled study; human tissue; aged; human cell; cancer growth; nonhuman; pancreas; cd8+ t lymphocyte; animal cell; mouse; mammalia; mus; cell function; cancer immunotherapy; immune system; animal experiment; animal model; protein; skin; skin tumor; cancer infiltration; pancreas adenocarcinoma; tumor immunity; immunity; tumor; immunocompetent cell; tissue specificity; programmed death 1 receptor; lymphoid cell; interleukin 33; cancer; human; male; female; priority journal; article |
| Journal Title: | Nature |
| Volume: | 579 |
| Issue: | 7797 |
| ISSN: | 0028-0836 |
| Publisher: | Nature Publishing Group |
| Date Published: | 2020-03-05 |
| Start Page: | 130 |
| End Page: | 135 |
| Language: | English |
| DOI: | 10.1038/s41586-020-2015-4 |
| PUBMED: | 32076273 |
| PROVIDER: | scopus |
| PMCID: | PMC7060130 |
| DOI/URL: | |
| Notes: | Article -- Export Date: 1 April 2020 -- Source: Scopus |
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