Abstract
Dendritic cells (DCs) have a role in the development and activation of self-reactive pathogenic T cells 1,2. Genetic variants that are associated with the function of DCs have been linked to autoimmune disorders 3,4, and DCs are therefore attractive therapeutic targets for such diseases. However, developing DC-targeted therapies for autoimmunity requires identification of the mechanisms that regulate DC function. Here, using single-cell and bulk transcriptional and metabolic analyses in combination with cell-specific gene perturbation studies, we identify a regulatory loop of negative feedback that operates in DCs to limit immunopathology. Specifically, we find that lactate, produced by activated DCs and other immune cells, boosts the expression of NDUFA4L2 through a mechanism mediated by hypoxia-inducible factor 1α (HIF-1α). NDUFA4L2 limits the production of mitochondrial reactive oxygen species that activate XBP1-driven transcriptional modules in DCs that are involved in the control of pathogenic autoimmune T cells. We also engineer a probiotic that produces lactate and suppresses T cell autoimmunity through the activation of HIF-1α–NDUFA4L2 signalling in DCs. In summary, we identify an immunometabolic pathway that regulates DC function, and develop a synthetic probiotic for its therapeutic activation.
Original language | English |
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Pages (from-to) | 881-889 |
Number of pages | 9 |
Journal | Nature |
Volume | 620 |
Issue number | 7975 |
Early online date | 9 Aug 2023 |
DOIs | |
State | Published - 24 Aug 2023 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2023, The Author(s), under exclusive licence to Springer Nature Limited.
Funding
This work was supported by grants NS102807, ES02530, ES029136 and AI126880 from the National Institutes of Health (NIH); RG4111A1 and JF2161-A-5 from the National Multiple Sclerosis Society; RSG-14-198-01-LIB from the American Cancer Society; and PA-160408459 from the International Progressive MS Alliance (to F.J.Q.). C.M.P. was supported by a fellowship from FAPESP BEPE (2019/13731-0) and by the Herbert R. & Jeanne C. Mayer Foundation; G.F.L. received support from a grant from the Swedish Research Council (2021-06735); C.G.-V. was supported by an Alfonso Martin Escudero Foundation postdoctoral fellowship and by a postdoctoral fellowship (ALTF 610-2017) from the European Molecular Biology Organization; C.-C.C. received support from a postdoctoral research abroad program (104-2917-I-564-024) from the Ministry of Science and Technology, Taiwan; C.M.R.-G. was supported by a predoctoral F.P.U. fellowship from the Ministry of Economy and Competitiveness and by the European Union FEDERER program; M.A.W. was supported by NIH (1K99NS114111, F32NS101790 and T32CA207201), the Program in Interdisciplinary Neuroscience and the Women’s Brain Initiative at Brigham and Women’s Hospital; T.I. was supported by an EMBO postdoctoral fellowship (ALTF: 1009–2021) and H.-G.L. was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2021R1A6A3A14039088). We thank L. Glimcher and J. R. Cubillos Ruiz for sharing ItgaxXbp1 mice; S. McSorley for providing the S. typhimurium strain; H. Xu and M. Lehtinen for providing training on CSF extraction; all members of the F.J.Q. laboratory for advice and discussions; R. Krishnan for technical assistance with flow cytometry studies; and the NeuroTechnology Studio at Brigham and Women’s Hospital for providing access to Seahorse instruments. Cre f lox
Funders | Funder number |
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FAPESP BEPE | 2019/13731-0 |
Herbert R. & Jeanne C. Mayer Foundation | |
National Institutes of Health | RG4111A1, JF2161-A-5 |
American Cancer Society | PA-160408459 |
National Multiple Sclerosis Society | RSG-14-198-01-LIB |
European Molecular Biology Organization | 104-2917-I-564-024, 1009–2021 |
Fundación Alfonso Martín Escudero | ALTF 610-2017 |
International Progressive MS Alliance | |
European Commission | T32CA207201, F32NS101790, 1K99NS114111 |
Ministry of Education | 2021R1A6A3A14039088 |
Ministerio de Economía y Competitividad | |
National Research Foundation of Korea | |
Vetenskapsrådet | 2021-06735 |
Ministry of Science and Technology, Taiwan |