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Watanabe T, Lam C, Oliver J, Oishi H, Teskey G, Beber S, Boonstra K, Mauricio Umaña J, Buhari H, Joe B, Guan Z, Horie M, Keshavjee S, Martinu T, Juvet SC. Donor Batf3 inhibits murine lung allograft rejection and airway fibrosis. Mucosal Immunol 2023; 16:104-120. [PMID: 36842540 DOI: 10.1016/j.mucimm.2023.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 02/14/2023] [Indexed: 02/28/2023]
Abstract
Chronic lung allograft dysfunction (CLAD) limits survival after lung transplantation. Noxious stimuli entering the airways foster CLAD development. Classical dendritic cells (cDCs) link innate and adaptive immunity and exhibit regional and functional specialization in the lung. The transcription factor basic leucine zipper ATF-like 3 (BATF3) is absolutely required for the development of type 1 cDCs (cDC1s), which reside in the airway epithelium and have variable responses depending on the context. We studied the role of BATF3 in a mouse minor alloantigen-mismatched orthotopic lung transplant model of CLAD with and without airway inflammation triggered by repeated administration of intratracheal lipopolysaccharide (LPS). We found that cDC1s accumulated in allografts compared with isografts and that donor cDC1s were gradually replaced by recipient cDC1s. LPS administration increased the number of cDC1s and enhanced their state of activation. We found that Batf3-/- recipient mice experienced reduced acute rejection in response to LPS; in contrast, Batf3-/- donor grafts underwent enhanced lung and skin allograft rejection and drove augmented recipient cluster of differentiation 8+ T-cell expansion in the absence of LPS. Our findings suggest that donor and recipient cDC1s have differing and context-dependent roles and may represent a therapeutic target in lung transplantation.
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Affiliation(s)
- Tatsuaki Watanabe
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada; Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Christina Lam
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Jillian Oliver
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Hisashi Oishi
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada; Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Grace Teskey
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Samuel Beber
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Kristen Boonstra
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Juan Mauricio Umaña
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Hifza Buhari
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Betty Joe
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Zehong Guan
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Miho Horie
- Joint Department of Medical Imaging, University Health Network, Toronto, Canada
| | - Shaf Keshavjee
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Tereza Martinu
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada
| | - Stephen C Juvet
- Latner Thoracic Research Laboratories, University Health Network, University of Toronto, Toronto, Canada.
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Brassard J, Gill ME, Bernatchez E, Desjardins V, Roy J, Joubert P, Marsolais D, Blanchet MR. Countering the advert effects of lung cancer on the anticancer potential of dendritic cell populations reinstates sensitivity to anti-PD-1 therapy. PLoS One 2021; 16:e0260636. [PMID: 34847189 PMCID: PMC8631683 DOI: 10.1371/journal.pone.0260636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 11/13/2021] [Indexed: 11/18/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths. While the recent use of immune checkpoint inhibitors significantly improves patient outcomes, responsiveness remains restricted to a small proportion of patients. Conventional dendritic cells (DCs) play a major role in anticancer immunity. In mice, two subpopulations of DCs are found in the lung: DC2s (CD11b+Sirpα+) and DC1s (CD103+XCR1+), the latest specializing in the promotion of anticancer immune responses. However, the impact of lung cancer on DC populations and the consequent influence on the anticancer immune response remain poorly understood. To address this, DC populations were studied in murine models of Lewis Lung Carcinoma (LLC) and melanoma-induced lung metastasis (B16F10). We report that direct exposure to live or dead cancer cells impacts the capacity of DCs to differentiate into CD103+ DC1s, leading to profound alterations in CD103+ DC1 proportions in the lung. In addition, we observed the accumulation of CD103loCD11b+ DCs, which express DC2 markers IRF4 and Sirpα, high levels of T-cell inhibitory molecules PD-L1/2 and the regulatory molecule CD200. Finally, DC1s were injected in combination with an immune checkpoint inhibitor (anti-PD-1) in the B16F10 model of resistance to the anti-PD-1 immune checkpoint therapy; the co-injection restored sensitivity to immunotherapy. Thus, we demonstrate that lung tumor development leads to the accumulation of CD103loCD11b+ DCs with a regulatory potential combined with a reduced proportion of highly-specialized antitumor CD103+ DC1s, which could promote cancer growth. Additionally, promoting an anticancer DC signature could be an interesting therapeutic avenue to increase the efficacy of existing immune checkpoint inhibitors.
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Affiliation(s)
- Julyanne Brassard
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, Canada
| | - Meredith Elizabeth Gill
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, Canada
| | - Emilie Bernatchez
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, Canada
| | - Véronique Desjardins
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, Canada
| | - Joanny Roy
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, Canada
| | - Philippe Joubert
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, Canada
| | - David Marsolais
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, Canada
| | - Marie-Renée Blanchet
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, Canada
- * E-mail:
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Brassard J, Roy J, Lemay AM, Beaulieu MJ, Bernatchez E, Veillette M, Duchaine C, Blanchet MR. Exposure to the Gram-Negative Bacteria Pseudomonas aeruginosa Influences the Lung Dendritic Cell Population Signature by Interfering With CD103 Expression. Front Cell Infect Microbiol 2021; 11:617481. [PMID: 34295830 PMCID: PMC8291145 DOI: 10.3389/fcimb.2021.617481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 06/15/2021] [Indexed: 11/25/2022] Open
Abstract
Lung dendritic cells (DCs) are divided into two major populations, which include CD103+XCR1+ cDC1s and CD11b+Sirpα+ cDC2s. The maintenance of their relative proportions is dynamic and lung inflammation, such as caused by exposure to lipopolysaccharide (LPS), a component of the outer membrane of Gram-negative bacteria, can have a significant impact on the local cDC signature. Alterations in the lung cDC signature could modify the capacity of the immune system to respond to various pathogens. We consequently aimed to assess the impact of the Gram-negative bacteria Pseudomonas aeruginosa on lung cDC1 and cDC2 populations, and to identify the mechanisms leading to alterations in cDC populations. We observed that exposure to P. aeruginosa decreased the proportions of CD103+XCR1+ cDC1s, while increasing that of CD11b+ DCs. We identified two potential mechanisms involved in this modulation of lung cDC populations. First, we observed an increase in bone marrow pre-DC IRF4 expression suggesting a higher propensity of pre-DCs to differentiate towards the cDC2 lineage. This observation was combined with a reduced capacity of lung XCR1+ DC1s to express CD103. In vitro, we demonstrated that GM-CSF-induced CD103 expression on cDCs depends on GM-CSF receptor internalization and RUNX1 activity. Furthermore, we observed that cDCs stimulation with LPS or P. aeruginosa reduced the proportions of intracellular GM-CSF receptor and decreased RUNX1 mRNA expression. Altogether, these results suggest that alterations in GM-CSF receptor intracellular localization and RUNX1 signaling could be involved in the reduced CD103 expression on cDC1 in response to P. aeruginosa. To verify whether the capacity of cDCs to express CD103 following P. aeruginosa exposure impacts the immune response, WT and Cd103-/- mice were exposed to P. aeruginosa. Lack of CD103 expression led to an increase in the number of neutrophils in the airways, suggesting that lack of CD103 expression on cDC1s could favor the innate immune response to this bacterium.
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Affiliation(s)
- Julyanne Brassard
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, QC, Canada
| | - Joanny Roy
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, QC, Canada
| | - Anne-Marie Lemay
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, QC, Canada
| | - Marie-Josée Beaulieu
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, QC, Canada
| | - Emilie Bernatchez
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, QC, Canada
| | - Marc Veillette
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, QC, Canada
| | - Caroline Duchaine
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, QC, Canada
| | - Marie-Renée Blanchet
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, QC, Canada
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