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de Mingo Pulido Á, Hänggi K, Celias DP, Gardner A, Li J, Batista-Bittencourt B, Mohamed E, Trillo-Tinoco J, Osunmakinde O, Peña R, Onimus A, Kaisho T, Kaufmann J, McEachern K, Soliman H, Luca VC, Rodriguez PC, Yu X, Ruffell B. The inhibitory receptor TIM-3 limits activation of the cGAS-STING pathway in intra-tumoral dendritic cells by suppressing extracellular DNA uptake. Immunity 2021; 54:1154-1167.e7. [PMID: 33979578 DOI: 10.1016/j.immuni.2021.04.019] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 02/24/2021] [Accepted: 04/16/2021] [Indexed: 12/17/2022]
Abstract
Blockade of the inhibitory receptor TIM-3 shows efficacy in cancer immunotherapy clinical trials. TIM-3 inhibits production of the chemokine CXCL9 by XCR1+ classical dendritic cells (cDC1), thereby limiting antitumor immunity in mammary carcinomas. We found that increased CXCL9 expression by splenic cDC1s upon TIM-3 blockade required type I interferons and extracellular DNA. Chemokine expression as well as combinatorial efficacy of TIM-3 blockade and paclitaxel chemotherapy were impaired by deletion of Cgas and Sting. TIM-3 blockade increased uptake of extracellular DNA by cDC1 through an endocytic process that resulted in cytoplasmic localization. DNA uptake and efficacy of TIM-3 blockade required DNA binding by HMGB1, while galectin-9-induced cell surface clustering of TIM-3 was necessary for its suppressive function. Human peripheral blood cDC1s also took up extracellular DNA upon TIM-3 blockade. Thus, TIM-3 regulates endocytosis of extracellular DNA and activation of the cytoplasmic DNA sensing cGAS-STING pathway in cDC1s, with implications for understanding the mechanisms underlying TIM-3 immunotherapy.
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Affiliation(s)
- Álvaro de Mingo Pulido
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Kay Hänggi
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Daiana P Celias
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Alycia Gardner
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Cancer Biology PhD Program, University of South Florida, Tampa, FL 33620, USA
| | - Jie Li
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Cancer Biology PhD Program, University of South Florida, Tampa, FL 33620, USA
| | - Bruna Batista-Bittencourt
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Cancer Biology PhD Program, University of South Florida, Tampa, FL 33620, USA
| | - Eslam Mohamed
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Jimena Trillo-Tinoco
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Olabisi Osunmakinde
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Cancer Biology PhD Program, University of South Florida, Tampa, FL 33620, USA; Department of Health Science and Technology, Aalborg University, Aalborg 29220, Denmark
| | - Reymi Peña
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Alexis Onimus
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Molecular Medicine PhD Program, University of South Florida, Tampa, FL 33620, USA
| | - Tsuneyasu Kaisho
- Institute for Advanced Medicine, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Johanna Kaufmann
- Immuno-Oncology & Combinations Research Unit, GSK, Waltham, MA 02451, USA
| | | | - Hatem Soliman
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Breast Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Vincent C Luca
- Department of Drug Discovery, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Paulo C Rodriguez
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Xiaoqing Yu
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Brian Ruffell
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Breast Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA.
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