1
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Pulfer A, Pizzagalli DU, Gagliardi PA, Hinderling L, Lopez P, Zayats R, Carrillo-Barberà P, Antonello P, Palomino-Segura M, Grädel B, Nicolai M, Giusti A, Thelen M, Gambardella LM, Murooka TT, Pertz O, Krause R, Gonzalez SF. Transformer-based spatial-temporal detection of apoptotic cell death in live-cell imaging. eLife 2024; 12:RP90502. [PMID: 38497754 PMCID: PMC10948145 DOI: 10.7554/elife.90502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024] Open
Abstract
Intravital microscopy has revolutionized live-cell imaging by allowing the study of spatial-temporal cell dynamics in living animals. However, the complexity of the data generated by this technology has limited the development of effective computational tools to identify and quantify cell processes. Amongst them, apoptosis is a crucial form of regulated cell death involved in tissue homeostasis and host defense. Live-cell imaging enabled the study of apoptosis at the cellular level, enhancing our understanding of its spatial-temporal regulation. However, at present, no computational method can deliver robust detection of apoptosis in microscopy timelapses. To overcome this limitation, we developed ADeS, a deep learning-based apoptosis detection system that employs the principle of activity recognition. We trained ADeS on extensive datasets containing more than 10,000 apoptotic instances collected both in vitro and in vivo, achieving a classification accuracy above 98% and outperforming state-of-the-art solutions. ADeS is the first method capable of detecting the location and duration of multiple apoptotic events in full microscopy timelapses, surpassing human performance in the same task. We demonstrated the effectiveness and robustness of ADeS across various imaging modalities, cell types, and staining techniques. Finally, we employed ADeS to quantify cell survival in vitro and tissue damage in mice, demonstrating its potential application in toxicity assays, treatment evaluation, and inflammatory dynamics. Our findings suggest that ADeS is a valuable tool for the accurate detection and quantification of apoptosis in live-cell imaging and, in particular, intravital microscopy data, providing insights into the complex spatial-temporal regulation of this process.
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Affiliation(s)
- Alain Pulfer
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
- Department of Information Technology and Electrical Engineering, ETH ZurichZürichSwitzerland
| | - Diego Ulisse Pizzagalli
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
- Euler Institute, USILuganoSwitzerland
| | | | | | | | | | - Pau Carrillo-Barberà
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
- Instituto de Biotecnología y Biomedicina (BioTecMed), Universitat de ValènciaValenciaSpain
| | - Paola Antonello
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
- Institute of Cell Biology, University of BernBernSwitzerland
| | | | - Benjamin Grädel
- Institute of Cell Biology, University of BernBernSwitzerland
| | | | - Alessandro Giusti
- Dalle Molle Institute for Artificial Intelligence, IDSIALuganoSwitzerland
| | - Marcus Thelen
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
| | | | | | - Olivier Pertz
- Institute of Cell Biology, University of BernBernSwitzerland
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2
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Abstract
Neutrophils are formidable defenders. Their vast numbers, constant production, high cytotoxicity and capacity to produce extracellular traps, underlie their ability to efficiently protect in a microorganism-rich world. However, neutrophils are much more than immune sentinels, as evidenced by the expanding repertoire of functions discovered in the context of tissue homeostasis, regeneration or chronic pathologies. In this Perspective, we discuss general functional features of the neutrophil compartment that may be relevant in most, if not all, physiological scenarios in which they participate, including specialization in naïve tissues, transcriptional noise in the bloodstream as a potential strategy for diversification and functional bias in inflammatory sites. We intentionally present the reader with more questions than answers and propose models and approaches that we hope will shed new light onto the biology of these fascinating cells and spark new directions of research.
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Affiliation(s)
- Miguel Palomino-Segura
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain.
- Immunophysiology Research Group, Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE) and Department of Physiology, Faculty of Sciences, University of Extremadura, Badajoz, Spain.
| | - Jon Sicilia
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Iván Ballesteros
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Andrés Hidalgo
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain.
- Vascular Biology and Therapeutics Program and Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA.
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3
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Abstract
Neutrophils are the most abundant circulating leukocyte and are crucial to the initial innate immune response to infection. One of their key pathogen-eliminating mechanisms is phagocytosis, the process of particle engulfment into a vacuole-like structure called the phagosome. The antimicrobial activity of the phagocytic process results from a collaboration of multiple systems and mechanisms within this organelle, where a complex interplay of ion fluxes, pH, reactive oxygen species, and antimicrobial proteins creates a dynamic antimicrobial environment. This complexity, combined with the difficulties of studying neutrophils ex vivo, has led to gaps in our knowledge of how the neutrophil phagosome optimizes pathogen killing. In particular, controversy has arisen regarding the relative contribution and integration of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-derived antimicrobial agents and granule-delivered antimicrobial proteins. Clinical syndromes arising from dysfunction in these systems in humans allow useful insight into these mechanisms, but their redundancy and synergy add to the complexity. In this article, we review the current knowledge regarding the formation and function of the neutrophil phagosome, examine new insights into the phagosomal environment that have been permitted by technological advances in recent years, and discuss aspects of the phagocytic process that are still under debate.
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Affiliation(s)
- Emily Naish
- National Heart and Lung InstituteImperial College LondonLondonUK
| | - Alexander JT Wood
- Medical SchoolUniversity of Western AustraliaPerthAustralia
- Department of Critical CareUniversity of MelbourneMelbourneAustralia
| | | | - Matthew Routledge
- Department of MedicineUniversity of CambridgeCambridgeUK
- Division of Immunology, Department of PathologyUniversity of CambridgeCambridgeUK
| | - Andrew Conway Morris
- Department of MedicineUniversity of CambridgeCambridgeUK
- Division of Immunology, Department of PathologyUniversity of CambridgeCambridgeUK
| | - Edwin R Chilvers
- National Heart and Lung InstituteImperial College LondonLondonUK
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4
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Antonello P, Pizzagalli DU, Foglierini M, Melgrati S, Radice E, Thelen S, Thelen M. ACKR3 promotes CXCL12/CXCR4-mediated cell-to-cell-induced lymphoma migration through LTB4 production. Front Immunol 2023; 13:1067885. [PMID: 36713377 PMCID: PMC9878562 DOI: 10.3389/fimmu.2022.1067885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/22/2022] [Indexed: 01/14/2023] Open
Abstract
Chemotaxis is an essential physiological process, often harnessed by tumors for metastasis. CXCR4, its ligand CXCL12 and the atypical receptor ACKR3 are overexpressed in many human cancers. Interfering with this axis by ACKR3 deletion impairs lymphoma cell migration towards CXCL12. Here, we propose a model of how ACKR3 controls the migration of the diffused large B-cell lymphoma VAL cells in vitro and in vivo in response to CXCL12. VAL cells expressing full-length ACKR3, but not a truncated version missing the C-terminus, can support the migration of VAL cells lacking ACKR3 (VAL-ko) when allowed to migrate together. This migration of VAL-ko cells is pertussis toxin-sensitive suggesting the involvement of a Gi-protein coupled receptor. RNAseq analysis indicate the expression of chemotaxis-mediating LTB4 receptors in VAL cells. We found that LTB4 acts synergistically with CXCL12 in stimulating the migration of VAL cells. Pharmacologic or genetic inhibition of BLT1R markedly reduces chemotaxis towards CXCL12 suggesting that LTB4 enhances in a contact-independent manner the migration of lymphoma cells. The results unveil a novel mechanism of cell-to-cell-induced migration of lymphoma.
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Affiliation(s)
- Paola Antonello
- Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
- Graduate School of Cellular and Molecular Sciences, University of Bern, Bern, Switzerland
| | - Diego U. Pizzagalli
- Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
- Università della Svizzera italiana, Euler Institute, Lugano-Viganello, Switzerland
| | - Mathilde Foglierini
- Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Serena Melgrati
- Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
- Graduate School of Cellular and Molecular Sciences, University of Bern, Bern, Switzerland
| | - Egle Radice
- Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
| | - Sylvia Thelen
- Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
| | - Marcus Thelen
- Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
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5
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Abstract
Navigation through the bulk tumour, entry into the blood vasculature, survival in the circulation, exit at distant sites and resumption of proliferation are all steps necessary for tumour cells to successfully metastasize. The ability of tumour cells to complete these steps is highly dependent on the timing and sequence of the interactions that these cells have with the tumour microenvironment (TME), including stromal cells, the extracellular matrix and soluble factors. The TME thus plays a major role in determining the overall metastatic phenotype of tumours. The complexity and cause-and-effect dynamics of the TME cannot currently be recapitulated in vitro or inferred from studies of fixed tissue, and are best studied in vivo, in real time and at single-cell resolution. Intravital imaging (IVI) offers these capabilities, and recent years have been a time of immense growth and innovation in the field. Here we review some of the recent advances in IVI of mammalian models of cancer and describe how IVI is being used to understand cancer progression and metastasis, and to develop novel treatments and therapies. We describe new techniques that allow access to a range of tissue and cancer types, novel fluorescent reporters and biosensors that allow fate mapping and the probing of functional and phenotypic states, and the clinical applications that have arisen from applying these techniques, reporters and biosensors to study cancer. We finish by presenting some of the challenges that remain in the field, how to address them and future perspectives.
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Affiliation(s)
- David Entenberg
- Gruss Lipper Biophotonics Center, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Integrated Imaging Program, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Department of Pathology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
| | - Maja H Oktay
- Gruss Lipper Biophotonics Center, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Integrated Imaging Program, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Department of Pathology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Department of Surgery, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
| | - John S Condeelis
- Gruss Lipper Biophotonics Center, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Integrated Imaging Program, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Department of Surgery, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Department of Cell Biology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
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6
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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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7
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Chan L, Morovati S, Karimi N, Alizadeh K, Vanderkamp S, Kakish JE, Bridle BW, Karimi K. Neutrophil Functional Heterogeneity and Implications for Viral Infections and Treatments. Cells 2022; 11:1322. [PMID: 35456003 PMCID: PMC9025666 DOI: 10.3390/cells11081322] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/08/2022] [Accepted: 04/10/2022] [Indexed: 12/15/2022] Open
Abstract
Evidence suggests that neutrophils exert specialized effector functions during infection and inflammation, and that these cells can affect the duration, severity, and outcome of the infection. These functions are related to variations in phenotypes that have implications in immunoregulation during viral infections. Although the complexity of the heterogeneity of neutrophils is still in the process of being uncovered, evidence indicates that they display phenotypes and functions that can assist in viral clearance or augment and amplify the immunopathology of viruses. Therefore, deciphering and understanding neutrophil subsets and their polarization in viral infections is of importance. In this review, the different phenotypes of neutrophils and the roles they play in viral infections are discussed. We also examine the possible ways to target neutrophil subsets during viral infections as potential anti-viral treatments.
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8
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Law H, Mach M, Howe A, Obeid S, Milner B, Carey C, Elfis M, Fsadni B, Ognenovska K, Phan TG, Carey D, Xu Y, Venturi V, Zaunders J, Kelleher AD, Munier CML. Early expansion of CD38+ICOS+ GC Tfh in draining lymph nodes during influenza vaccination immune response. iScience 2022; 25:103656. [PMID: 35028536 PMCID: PMC8741621 DOI: 10.1016/j.isci.2021.103656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 11/22/2021] [Accepted: 12/14/2021] [Indexed: 01/23/2023] Open
Abstract
T follicular helper (Tfh) cells provide critical help to B cells during the germinal center (GC) reaction to facilitate generation of protective humoral immunity. Accessing the human lymph node (LN) to study the commitment of CD4 T cells to GC Tfh cell differentiation during in vivo vaccine responses is difficult. We used ultrasound guided fine needle biopsy to monitor recall responses in axillary LNs to seasonal influenza vaccination in healthy volunteers. Specific expansion of GC cell subsets occurred exclusively within draining LNs five days postvaccination. Draining LN GC Tfh and precursor-Tfh cells express higher levels of CD38, ICOS, and Ki67, indicating they were significantly more activated, motile, and proliferating, compared to contralateral LN cells. These observations provide insight into the early expansion phase of the human Tfh lineage within LNs during a vaccine induced memory response and highlights early LN immune responses may not be reflected in the periphery. Early response to influenza vaccine is characterized by expansion of GC cell subsets Specific expansion of CD38+ ICOS+ GC Tfh and Pre-Tfh occurs in draining LNs only Activated GC Tfh and Pre-Tfh are also proliferating, expressing high levels of Ki67 Correlation between activated Pre-Tfh and activated c-Tfh suggests a potential origin
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Affiliation(s)
- Hannah Law
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia
| | - Melanie Mach
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia.,The University of Sydney, Sydney 2006, NSW, Australia
| | - Annett Howe
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia
| | - Solange Obeid
- St Vincent's Hospital Sydney, Sydney 2010, NSW, Australia
| | - Brad Milner
- St Vincent's Hospital Sydney, Sydney 2010, NSW, Australia
| | - Cate Carey
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia
| | - Maxine Elfis
- St Vincent's Hospital Sydney, Sydney 2010, NSW, Australia
| | - Bertha Fsadni
- St Vincent's Centre for Applied Medical Research (AMR), Sydney 2010, NSW, Australia
| | | | - Tri Giang Phan
- Garvan Institute of Medical Research, Sydney 2010, NSW, Australia.,St Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney 2010, NSW, Australia
| | - Diane Carey
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia
| | - Yin Xu
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia
| | - Vanessa Venturi
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia
| | - John Zaunders
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia.,St Vincent's Centre for Applied Medical Research (AMR), Sydney 2010, NSW, Australia
| | - Anthony D Kelleher
- The Kirby Institute, UNSW Sydney, Sydney 2052, NSW, Australia.,St Vincent's Hospital Sydney, Sydney 2010, NSW, Australia.,St Vincent's Centre for Applied Medical Research (AMR), Sydney 2010, NSW, Australia
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9
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Pizzagalli DU, Pulfer A, Thelen M, Krause R, Gonzalez SF. In Vivo Motility Patterns Displayed by Immune Cells Under Inflammatory Conditions. Front Immunol 2022; 12:804159. [PMID: 35046959 PMCID: PMC8762290 DOI: 10.3389/fimmu.2021.804159] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 11/26/2021] [Indexed: 11/13/2022] Open
Abstract
The migration of immune cells plays a key role in inflammation. This is evident in the fact that inflammatory stimuli elicit a broad range of migration patterns in immune cells. Since these patterns are pivotal for initiating the immune response, their dysregulation is associated with life-threatening conditions including organ failure, chronic inflammation, autoimmunity, and cancer, amongst others. Over the last two decades, thanks to advancements in the intravital microscopy technology, it has become possible to visualize cell migration in living organisms with unprecedented resolution, helping to deconstruct hitherto unexplored aspects of the immune response associated with the dynamism of cells. However, a comprehensive classification of the main motility patterns of immune cells observed in vivo, along with their relevance to the inflammatory process, is still lacking. In this review we defined cell actions as motility patterns displayed by immune cells, which are associated with a specific role during the immune response. In this regard, we summarize the main actions performed by immune cells during intravital microscopy studies. For each of these actions, we provide a consensus name, a definition based on morphodynamic properties, and the biological contexts in which it was reported. Moreover, we provide an overview of the computational methods that were employed for the quantification, fostering an interdisciplinary approach to study the immune system from imaging data.
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Affiliation(s)
- Diego Ulisse Pizzagalli
- Istituto di Ricerca in Biomedicina (IRB), Università della Svizzera italiana, Bellinzona, Switzerland
- Euler institute, Università della Svizzera italiana, Lugano-Viganello, Switzerland
| | - Alain Pulfer
- Istituto di Ricerca in Biomedicina (IRB), Università della Svizzera italiana, Bellinzona, Switzerland
- Department of Information Technology and Electrical Engineering, Swiss Federal Institute of Technology Zurich (ETHZ) Zürich, Zürich, Switzerland
| | - Marcus Thelen
- Istituto di Ricerca in Biomedicina (IRB), Università della Svizzera italiana, Bellinzona, Switzerland
| | - Rolf Krause
- Euler institute, Università della Svizzera italiana, Lugano-Viganello, Switzerland
| | - Santiago F. Gonzalez
- Istituto di Ricerca in Biomedicina (IRB), Università della Svizzera italiana, Bellinzona, Switzerland
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10
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Schienstock D, Mueller SN. Moving beyond velocity: Opportunities and challenges to quantify immune cell behavior. Immunol Rev 2021; 306:123-136. [PMID: 34786722 DOI: 10.1111/imr.13038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/13/2021] [Revised: 10/20/2021] [Accepted: 11/02/2021] [Indexed: 12/22/2022]
Abstract
The analysis of cellular behavior using intravital multi-photon microscopy has contributed substantially to our understanding of the priming and effector phases of immune responses. Yet, many questions remain unanswered and unexplored. Though advancements in intravital imaging techniques and animal models continue to drive new discoveries, continued improvements in analysis methods are needed to extract detailed information about cellular behavior. Focusing on dendritic cell (DC) and T cell interactions as an exemplar, here we discuss key limitations for intravital imaging studies and review and explore alternative approaches to quantify immune cell behavior. We touch upon current developments in deep learning models, as well as established methods from unrelated fields such as ecology to detect and track objects over time. As developments in open-source software make it possible to process and interactively view larger datasets, the challenge for the field will be to determine how best to combine intravital imaging with multi-parameter imaging of larger tissue regions to discover new facets of leukocyte dynamics and how these contribute to immune responses.
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Affiliation(s)
- Dominik Schienstock
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, Vic, Australia
| | - Scott N Mueller
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, Vic, Australia
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11
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Abstract
The earliest reported observations on neutrophils date from 1879 to 1880, when Paul Ehrlich utilized a set of coal tar dyes to interrogate differential staining properties of the granules from white blood cells. While acidic and basic dyes identified eosinophils and basophils respectively, neutrophils were revealed by neutral dyes. Unknowingly, his work staining blood films set the stage for one of the most exciting features of immune cells discovered in the last decade, myeloid heterogeneity. Since then, advances in live imaging and high-resolution sequencing technologies have revolutionized how we analyze and envision those cells that Ehrich fixed in blood smears. Neutrophil plasticity and heterotypic interactions with immune and non-immune compartments are increasingly appreciated as an important part of their biology. In this review, we highlight early and recent work that will help the reader to appreciate our current view of the neutrophil life cycle -from maturation to elimination-, and how neutrophils behave and dynamically modulate tissue immunity, both in steady-state and in disease.
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Affiliation(s)
- Andrés Hidalgo
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - María Casanova-Acebes
- Cancer Immunity Group, Molecular Oncology Program, Centro Nacional de Investigaciones Oncologicas Carlos III, Madrid, Spain.
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12
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Abstract
Chronic inflammatory disorders (CID), such as autoimmune diseases, are characterized by overactivation of the immune system and loss of immune tolerance. T helper 17 (Th17) cells are strongly associated with the pathogenesis of multiple CID, including psoriasis, rheumatoid arthritis, and inflammatory bowel disease. In line with the increasingly recognized contribution of innate immune cells to the modulation of dendritic cell (DC) function and DC-driven adaptive immune responses, we recently showed that neutrophils are required for DC-driven Th17 cell differentiation from human naive T cells. Consequently, recruitment of neutrophils to inflamed tissues and lymph nodes likely creates a highly inflammatory loop through the induction of Th17 cells that should be intercepted to attenuate disease progression. Tolerogenic therapy via DCs, the central orchestrators of the adaptive immune response, is a promising strategy for the treatment of CID. Tolerogenic DCs could restore immune tolerance by driving the development of regulatory T cells (Tregs) in the periphery. In this review, we discuss the effects of the tolerogenic adjuvants vitamin D3 (VD3), corticosteroids (CS), and retinoic acid (RA) on both DCs and neutrophils and their potential interplay. We briefly summarize how neutrophils shape DC-driven T-cell development in general. We propose that, for optimization of tolerogenic DC therapy for the treatment of CID, both DCs for tolerance induction and the neutrophil inflammatory loop should be targeted while preserving the potential Treg-enhancing effects of neutrophils.
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Affiliation(s)
| | | | - Esther C. de Jong
- Department of Experimental Immunology, Amsterdam University Medical Center, Amsterdam Institute for Infection & Immunity, University of Amsterdam, Amsterdam, Netherlands
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13
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Georgantzoglou A, Matthews J, Sarris M. Neutrophil motion in numbers: How to analyse complex migration patterns. Cells Dev 2021; 168:203734. [PMID: 34461315 DOI: 10.1016/j.cdev.2021.203734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/15/2021] [Revised: 08/04/2021] [Accepted: 08/16/2021] [Indexed: 10/20/2022]
Abstract
In vivo imaging has revolutionised the study of leukocyte trafficking and revealed many insights on the dynamic behaviour of immune cells in their native environment. Neutrophil migration represents a prominent example whereby live imaging led to discovery of unanticipated cell migration patterns. These cells are the first to enter inflammatory sites and their recruitment had once been thought to be driven primarily by extrinsic signals and resolved by apoptosis in these lesions. However, in vivo imaging in zebrafish and mice indicated that neutrophils are also able to self-organise their migration to a large extent, through collective generation of gradients, in a process referred to as 'swarming', and that they can leave sites of inflammation, in a process referred to as 'reverse migration'. An important step in understanding these newly defined behaviours is the ability to detect and quantify them through statistical analysis. Here we provide a summary of considerations and recommendations for quantitative analysis of neutrophil swarming and reverse migration, with the purpose of introducing relevant analysis tools to new researchers in the field and establishing common frameworks and standards.
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Affiliation(s)
- Antonios Georgantzoglou
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Site, Cambridge CB2 3DY, UK.
| | - Joanna Matthews
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Site, Cambridge CB2 3DY, UK
| | - Milka Sarris
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Site, Cambridge CB2 3DY, UK.
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14
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Abstract
Neutrophils are traditionally considered short‐lived, circulating innate immune cells that are rapidly recruited to sites of inflammation in response to infectious and inflammatory stimuli. Neutrophils efficiently internalize, kill or entrap pathogens, but their effector molecules may cause collateral tissue damage. More recently, it has been appreciated that neutrophils can also influence adaptive immunity. Lymph nodes (LNs) are immune cell‐rich secondary lymphoid organs that provide an ideal platform for cellular interaction and the integration of immunological information collected from local tissues. A variety of peripheral stimuli promote neutrophil migration to draining LNs via blood or lymphatics, utilizing differing molecular cues depending on the site of entry. Within LNs, neutrophils interact with other innate and adaptive cells. Crosstalk with subcapsular sinus macrophages contributes to the control of pathogen spread beyond the LN. Neutrophils can influence antigen presentation indirectly by interacting with DCs or directly by expressing major histocompatibility complex (MHC) and costimulatory molecules for antigen presentation. Interactions between neutrophils and adaptive lymphocytes can alter B‐cell antibody responses. Studies have shown conflicting results on whether neutrophils exert stimulatory or inhibitory effects on other LN immune cells, with stimulus‐specific and temporal differences in the outcome of these interactions. Furthermore, neutrophils have also been shown to traffick to LNs in homeostasis, with a potential role in immune surveillance, antigen capture and in shaping early adaptive responses in LNs. Understanding the mechanisms underpinning the effects of neutrophils on LN immune cells and adaptive immunity could facilitate the development of neutrophil‐targeted therapies in inflammatory diseases.
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Affiliation(s)
- Laurence S C Lok
- Molecular Immunity Unit, MRC Laboratory of Molecular Biology, University of Cambridge Department of Medicine, Cambridge, UK.,Cambridge Institute for Therapeutic Immunology and Infectious Diseases, University of Cambridge, Cambridge, UK.,Department of Immunology and Cell Biology, Graduate School of Medicine, Osaka University, Osaka, Japan.,Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Menna R Clatworthy
- Molecular Immunity Unit, MRC Laboratory of Molecular Biology, University of Cambridge Department of Medicine, Cambridge, UK.,Cambridge Institute for Therapeutic Immunology and Infectious Diseases, University of Cambridge, Cambridge, UK.,Cellular Genetics, Wellcome Sanger Institute, Hinxton, UK
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15
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Di Pilato M, Palomino-Segura M, Mejías-Pérez E, Gómez CE, Rubio-Ponce A, D'Antuono R, Pizzagalli DU, Pérez P, Kfuri-Rubens R, Benguría A, Dopazo A, Ballesteros I, Sorzano COS, Hidalgo A, Esteban M, Gonzalez SF. Neutrophil subtypes shape HIV-specific CD8 T-cell responses after vaccinia virus infection. NPJ Vaccines 2021; 6:52. [PMID: 33846352 PMCID: PMC8041892 DOI: 10.1038/s41541-021-00314-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 06/01/2020] [Accepted: 03/09/2021] [Indexed: 12/20/2022] Open
Abstract
Neutrophils are innate immune cells involved in the elimination of pathogens and can also induce adaptive immune responses. Nα and Nβ neutrophils have been described with distinct in vitro capacity to generate antigen-specific CD8 T-cell responses. However, how these cell types exert their role in vivo and how manipulation of Nβ/Nα ratio influences vaccine-mediated immune responses are not known. In this study, we find that these neutrophil subtypes show distinct migratory and motility patterns and different ability to interact with CD8 T cells in the spleen following vaccinia virus (VACV) infection. Moreover, after analysis of adhesion, inflammatory, and migration markers, we observe that Nβ neutrophils overexpress the α4β1 integrin compared to Nα. Finally, by inhibiting α4β1 integrin, we increase the Nβ/Nα ratio and enhance CD8 T-cell responses to HIV VACV-delivered antigens. These findings provide significant advancements in the comprehension of neutrophil-based control of adaptive immune system and their relevance in vaccine design.
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Affiliation(s)
- Mauro Di Pilato
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland. .,Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain. .,Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA. .,Harvard Medical School, Boston, MA, USA. .,Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Miguel Palomino-Segura
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Ernesto Mejías-Pérez
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain.,Max von Pettenkofer-Institute, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Carmen E Gómez
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - Andrea Rubio-Ponce
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain.,Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Rocco D'Antuono
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Crick Advanced Light Microscopy Science and Technology Platform, The Francis Crick Institute, London, United Kingdom
| | - Diego Ulisse Pizzagalli
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Institute of Computational Science, Università della Svizzera Italiana, Lugano, Switzerland
| | - Patricia Pérez
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.,Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - Raphael Kfuri-Rubens
- Center of Integrated Protein Science Munich and Division of Clinical Pharmacology, Klinikum der Universität München, Munich, Germany
| | - Alberto Benguría
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Ana Dopazo
- Genomics Unit, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Iván Ballesteros
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Carlos Oscar S Sorzano
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - Andrés Hidalgo
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Mariano Esteban
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain.
| | - Santiago F Gonzalez
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.
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16
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Latino I, Gonzalez SF. Spatio-temporal profile of innate inflammatory cells and mediators during influenza virus infection. Current Opinion in Physiology 2021. [DOI: 10.1016/j.cophys.2020.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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17
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Abstract
Neutrophils are the most abundant circulating leukocyte within the blood stream and for many years the dogma has been that these cells migrate rapidly into tissues in response to injury or infection, forming the first line of host defense. While it has previously been documented that neutrophils marginate within the vascular beds of the lung and liver and are present in large numbers within the parenchyma of tissues, such as spleen, lymph nodes, and bone marrow (BM), the function of these tissue resident neutrophils under homeostasis, in response to pathogen invasion or injury has only recently been explored, revealing the unexpected role of these cells as immunoregulators or immune helpers and also unraveling their heterogeneity and plasticity. Neutrophils are highly motile cells and the use of intravital microscopy (IVM) to image cells within their environment with little manipulation has dramatically increased our understanding of the function, migratory behavior, and interaction of these short-lived cells with other innate and adaptive immune cells. Contrary to previous dogma, these studies have shown that marginated and tissue resident neutrophils are the first responders to pathogens and injury, critical in limiting the spread of infection and contributing to the orchestration of the subsequent immune response. The interplay of neutrophils, with other neutrophils, leukocytes, and stroma cells can also modulate and tune their early and late response in order to eradicate pathogens, minimize tissue damage, and, in certain circumstances, contribute to tissue repair. In this review, we will follow the extraordinary journey of neutrophils from their origin in the BM to their death, exploring their role as tissue resident cells in the lung, spleen, lymph nodes, and skin and outlining the importance of neutrophil subsets, their functions under homeostasis, and in response to infection. Finally, we will comment on how understanding these processes in greater detail at a molecular level can lead to development of new therapeutics.
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Affiliation(s)
- Katia De Filippo
- Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Sara M Rankin
- Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom
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18
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Abstract
Neutrophils are polymorphonuclear leukocytes that play a central role in host defense against infection and tissue injury. They are rapidly recruited to the inflamed site and execute a variety of functions to clear invading pathogens and damaged cells. However, many of their defense mechanisms are capable of inflicting collateral tissue damage. Neutrophil-driven inflammation is a unifying mechanism underlying many common diseases. Efficient removal of neutrophils from inflammatory loci is critical for timely resolution of inflammation and return to homeostasis. Accumulating evidence challenges the classical view that neutrophils represent a homogeneous population and that halting neutrophil influx is sufficient to explain their rapid decline within inflamed loci during the resolution of protective inflammation. Hence, understanding the mechanisms that govern neutrophil functions and their removal from the inflammatory locus is critical for minimizing damage to the surrounding tissue and for return to homeostasis. In this review, we briefly address recent advances in characterizing neutrophil phenotypic and functional heterogeneity and the molecular mechanisms that determine the fate of neutrophils within inflammatory loci and the outcome of the inflammatory response. We also discuss how these mechanisms may be harnessed as potential therapeutic targets to facilitate resolution of inflammation.
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Affiliation(s)
- János G Filep
- Department of Pathology and Cell Biology, University of Montreal and Research Center, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
| | - Amiram Ariel
- Departmentof Biology and Human Biology, University of Haifa, Haifa, Israel
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