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Virgilio T, Bordini J, Cascione L, Sartori G, Latino I, Molina Romero D, Leoni C, Akhmedov M, Rinaldi A, Arribas AJ, Morone D, Seyed Jafari SM, Bersudsky M, Ottolenghi A, Kwee I, Chiaravalli AM, Sessa F, Hunger RE, Bruno A, Mortara L, Voronov E, Monticelli S, Apte RN, Bertoni F, Gonzalez SF. Subcapsular Sinus Macrophages Promote Melanoma Metastasis to the Sentinel Lymph Nodes via an IL1α-STAT3 Axis. Cancer Immunol Res 2022; 10:1525-1541. [PMID: 36206577 PMCID: PMC9716256 DOI: 10.1158/2326-6066.cir-22-0225] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 07/18/2022] [Accepted: 10/04/2022] [Indexed: 11/06/2022]
Abstract
During melanoma metastasis, tumor cells originating in the skin migrate via lymphatic vessels to the sentinel lymph node (sLN). This process facilitates tumor cell spread across the body. Here, we characterized the innate inflammatory response to melanoma in the metastatic microenvironment of the sLN. We found that macrophages located in the subcapsular sinus (SS) produced protumoral IL1α after recognition of tumoral antigens. Moreover, we confirmed that the elimination of LN macrophages or the administration of an IL1α-specific blocking antibody reduced metastatic spread. To understand the mechanism of action of IL1α in the context of the sLN microenvironment, we applied single-cell RNA sequencing to microdissected metastases obtained from animals treated with the IL1α-specific blocking antibody. Among the different pathways affected, we identified STAT3 as one of the main targets of IL1α signaling in metastatic tumor cells. Moreover, we found that the antitumoral effect of the anti-IL1α was not mediated by lymphocytes because Il1r1 knockout mice did not show significant differences in metastasis growth. Finally, we found a synergistic antimetastatic effect of the combination of IL1α blockade and STAT3 inhibition with stattic, highlighting a new immunotherapy approach to preventing melanoma metastasis.
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Affiliation(s)
- Tommaso Virgilio
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Joy Bordini
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,GenomSys SA, Lugano, Switzerland
| | - Luciano Cascione
- Institute of Oncology Research, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Giulio Sartori
- Institute of Oncology Research, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Irene Latino
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Daniel Molina Romero
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Graduate School Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Cristina Leoni
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Murodzhon Akhmedov
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,BigOmics Analytics, Lugano, Switzerland
| | - Andrea Rinaldi
- Institute of Oncology Research, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Alberto J. Arribas
- Institute of Oncology Research, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Diego Morone
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - S. Morteza Seyed Jafari
- Department of Dermatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Marina Bersudsky
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Aner Ottolenghi
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ivo Kwee
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,BigOmics Analytics, Lugano, Switzerland
| | - Anna Maria Chiaravalli
- Unit of Pathology, ASST dei Sette Laghi, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Fausto Sessa
- Unit of Pathology, ASST dei Sette Laghi, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Robert E. Hunger
- Department of Dermatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Antonino Bruno
- Laboratory of Innate Immunity, Unit of Molecular Pathology, Biochemistry, and Immunology, IRCCS MultiMedica, Milan, Italy.,Laboratory of Immunology and General Pathology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Lorenzo Mortara
- Laboratory of Immunology and General Pathology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Elena Voronov
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Silvia Monticelli
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Ron N. Apte
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Francesco Bertoni
- Institute of Oncology Research, Università della Svizzera Italiana, Bellinzona, Switzerland.,Oncology Institute of Southern Switzerland (IOSI), Bellinzona, Switzerland
| | - Santiago F. Gonzalez
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Corresponding Author: Santiago F. Gonzalez, Institute for Research in Biomedicine, via Francesco Chiesa 5. CH-6500 Bellinzona. Switzerland. Phone: +41 58 666 7226; E-mail:
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Pizzagalli DU, Bordini J, Morone D, Pulfer A, Carrillo-Barberà P, Thelen B, Ceni K, Thelen M, Krause R, Gonzalez SF. CANCOL, a Computer-Assisted Annotation Tool to Facilitate Colocalization and Tracking of Immune Cells in Intravital Microscopy. J Immunol 2022; 208:1493-1499. [PMID: 35181636 DOI: 10.4049/jimmunol.2100811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
Two-photon intravital microscopy (2P-IVM) has become a widely used technique to study cell-to-cell interactions in living organisms. Four-dimensional imaging data obtained via 2P-IVM are classically analyzed by performing automated cell tracking, a procedure that computes the trajectories followed by each cell. However, technical artifacts, such as brightness shifts, the presence of autofluorescent objects, and channel crosstalking, affect the specificity of imaging channels for the cells of interest, thus hampering cell detection. Recently, machine learning has been applied to overcome a variety of obstacles in biomedical imaging. However, existing methods are not tailored for the specific problems of intravital imaging of immune cells. Moreover, results are highly dependent on the quality of the annotations provided by the user. In this study, we developed CANCOL, a tool that facilitates the application of machine learning for automated tracking of immune cells in 2P-IVM. CANCOL guides the user during the annotation of specific objects that are problematic for cell tracking when not properly annotated. Then, it computes a virtual colocalization channel that is specific for the cells of interest. We validated the use of CANCOL on challenging 2P-IVM videos from murine organs, obtaining a significant improvement in the accuracy of automated tracking while reducing the time required for manual track curation.
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Affiliation(s)
- Diego Ulisse Pizzagalli
- Euler Institute, Università della Svizzera Italiana, Lugano, Switzerland
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Ticino, Switzerland
| | - Joy Bordini
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Ticino, Switzerland
| | - Diego Morone
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Ticino, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Switzerland; and
| | - Alain Pulfer
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Ticino, Switzerland
- Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich, Switzerland
| | - Pau Carrillo-Barberà
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Ticino, Switzerland
| | - Benedikt Thelen
- Euler Institute, Università della Svizzera Italiana, Lugano, Switzerland
| | - Kevin Ceni
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Ticino, Switzerland
| | - Marcus Thelen
- Euler Institute, Università della Svizzera Italiana, Lugano, Switzerland
| | - Rolf Krause
- Euler Institute, Università della Svizzera Italiana, Lugano, Switzerland;
| | - Santiago Fernandez Gonzalez
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Ticino, Switzerland;
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