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Kvedaraite E, Milne P, Khalilnezhad A, Chevrier M, Sethi R, Lee HK, Hagey DW, von Bahr Greenwood T, Mouratidou N, Jädersten M, Lee NYS, Minnerup L, Yingrou T, Dutertre CA, Benac N, Hwang YY, Lum J, Loh AHP, Jansson J, Teng KWW, Khalilnezhad S, Weili X, Resteu A, Liang TH, Guan NL, Larbi A, Howland SW, Arnell H, Andaloussi SEL, Braier J, Rassidakis G, Galluzzo L, Dzionek A, Henter JI, Chen J, Collin M, Ginhoux F. Notch-dependent cooperativity between myeloid lineages promotes Langerhans cell histiocytosis pathology. Sci Immunol 2022; 7:eadd3330. [PMID: 36525505 PMCID: PMC7614120 DOI: 10.1126/sciimmunol.add3330] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Langerhans cell histiocytosis (LCH) is a potentially fatal neoplasm characterized by the aberrant differentiation of mononuclear phagocytes, driven by mitogen-activated protein kinase (MAPK) pathway activation. LCH cells may trigger destructive pathology yet remain in a precarious state finely balanced between apoptosis and survival, supported by a unique inflammatory milieu. The interactions that maintain this state are not well known and may offer targets for intervention. Here, we used single-cell RNA-seq and protein analysis to dissect LCH lesions, assessing LCH cell heterogeneity and comparing LCH cells with normal mononuclear phagocytes within lesions. We found LCH discriminatory signatures pointing to senescence and escape from tumor immune surveillance. We also uncovered two major lineages of LCH with DC2- and DC3/monocyte-like phenotypes and validated them in multiple pathological tissue sites by high-content imaging. Receptor-ligand analyses and lineage tracing in vitro revealed Notch-dependent cooperativity between DC2 and DC3/monocyte lineages during expression of the pathognomonic LCH program. Our results present a convergent dual origin model of LCH with MAPK pathway activation occurring before fate commitment to DC2 and DC3/monocyte lineages and Notch-dependent cooperativity between lineages driving the development of LCH cells.
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Affiliation(s)
- Egle Kvedaraite
- Childhood Cancer Research Unit, Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- Department of Clinical Pathology, Karolinska University Laboratory, Stockholm, Sweden
| | - Paul Milne
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, UK
- Northern Centre for Cancer Care, Newcastle-upon-Tyne Hospitals NHS Foundation Trust, Newcastle-upon-Tyne, UK
| | - Ahad Khalilnezhad
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Marion Chevrier
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Raman Sethi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Hong Kai Lee
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, UK
| | - Daniel W. Hagey
- Clinical Research Center, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Tatiana von Bahr Greenwood
- Childhood Cancer Research Unit, Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
- Pediatric Oncology, Astrid Lindgrens Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Natalia Mouratidou
- Pediatric Gastroenterology, Hepatology and Nutrition Unit, Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
- Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Martin Jädersten
- Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
- Center for Hematology and Regenerative Medicine, Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Nicole Yee Shin Lee
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Lara Minnerup
- Miltenyi Biotec B.V. & Co. KG, Bergisch Gladbach, Germany
| | - Tan Yingrou
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
- National Skin Center, National Healthcare Group, Singapore
| | - Charles-Antoine Dutertre
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif, France
| | - Nathan Benac
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif, France
- Université de Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France
| | - You Yi Hwang
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Josephine Lum
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Amos Hong Pheng Loh
- VIVA-KKH Paediatric Brain and Solid Tumour Programme, KK Women’s and Children’s Hospital, Singapore
| | - Jessica Jansson
- Pediatric Gastroenterology, Hepatology and Nutrition Unit, Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Karen Wei Weng Teng
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Shabnam Khalilnezhad
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Xu Weili
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Anastasia Resteu
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, UK
- Northern Centre for Cancer Care, Newcastle-upon-Tyne Hospitals NHS Foundation Trust, Newcastle-upon-Tyne, UK
| | - Tey Hong Liang
- National Skin Centre, National Healthcare Group, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore
| | - Ng Lai Guan
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Anis Larbi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Shanshan Wu Howland
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
| | - Henrik Arnell
- Department of Clinical Pathology, Karolinska University Laboratory, Stockholm, Sweden
- Pediatric Gastroenterology, Hepatology and Nutrition Unit, Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Samir EL Andaloussi
- Clinical Research Center, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Jorge Braier
- Hospital Nacional de Pediatría Dr Prof JP Garrahan, Pathology Department, Buenos Aires, Argentina
| | - Georgios Rassidakis
- Department of Clinical Pathology, Karolinska University Laboratory, Stockholm, Sweden
| | - Laura Galluzzo
- Hospital Nacional de Pediatría Dr Prof JP Garrahan, Pathology Department, Buenos Aires, Argentina
| | | | - Jan-Inge Henter
- Childhood Cancer Research Unit, Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
- Pediatric Oncology, Astrid Lindgrens Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Jinmiao Chen
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
- Immunology Translational Research Program, Yong Loo Lin School of Medicine, Department of Microbiology and Immunology, Narional Unietsoty of Sinapore (NUS)
| | - Matthew Collin
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, UK
- Northern Centre for Cancer Care, Newcastle-upon-Tyne Hospitals NHS Foundation Trust, Newcastle-upon-Tyne, UK
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), BIOPOLIS, Singapore, Singapore
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif, France
- Shanghai Institute of Immunology, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore
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2
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James BD, de Vos A, Aluwihare LI, Youngs S, Ward CP, Nelson RK, Michel APM, Hahn ME, Reddy CM. Divergent Forms of Pyroplastic: Lessons Learned from the M/V X-Press Pearl Ship Fire. ACS ENVIRONMENTAL AU 2022; 2:467-479. [PMID: 37101454 PMCID: PMC10125272 DOI: 10.1021/acsenvironau.2c00020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 04/28/2023]
Abstract
In late May 2021, the M/V X-Press Pearl container ship caught fire while anchored 18 km off the coast of Colombo, Sri Lanka and spilled upward of 70 billion pieces of plastic or "nurdles" (∼1680 tons), littering the country's coastline. Exposure to combustion, heat, chemicals, and petroleum products led to an apparent continuum of changes from no obvious effects to pieces consistent with previous reports of melted and burned plastic (pyroplastic) found on beaches. At the middle of this continuum, nurdles were discolored but appeared to retain their prefire morphology, resembling nurdles that had been weathered in the environment. We performed a detailed investigation of the physical and surface properties of discolored nurdles collected on a beach 5 days after the ship caught fire and within 24 h of their arrival onshore. The color was the most striking trait of the plastic: white for nurdles with minimal alteration from the accident, orange for nurdles containing antioxidant degradation products formed by exposure to heat, and gray for partially combusted nurdles. Our color analyses indicate that this fraction of the plastic released from the ship was not a continuum but instead diverged into distinct groups. Fire left the gray nurdles scorched, with entrained particles and pools of melted plastic, and covered in soot, representing partial pyroplastics, a new subtype of pyroplastic. Cross sections showed that the heat- and fire-induced changes were superficial, leaving the surfaces more hydrophilic but the interior relatively untouched. These results provide timely and actionable information to responders to reevaluate cleanup end points, monitor the recurrence of these spilled nurdles, gauge short- and long-term effects of the spilled nurdles to the local ecosystem, and manage the recovery of the spill. These findings underscore partially combusted plastic (pyroplastic) as a type of plastic pollution that has yet to be fully explored despite the frequency at which plastic is burned globally.
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Affiliation(s)
- Bryan D. James
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
- Department
of Biology, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Asha de Vos
- Oceanswell, 9 Park Gardens, Colombo 5 00500, Sri Lanka
- The
Oceans Institute, University of Western
Australia, 35 Stirling
Highway, Perth, WA 6009, Australia
| | - Lihini I. Aluwihare
- Scripps
Institution of Oceanography, University
of California San Diego, La Jolla, California 92093, United States
| | - Sarah Youngs
- Department
of Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Collin P. Ward
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Robert K. Nelson
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Anna P. M. Michel
- Department
of Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Mark E. Hahn
- Department
of Biology, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Christopher M. Reddy
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
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Xu J, Wijesekara N, Regeenes R, Rijjal DA, Piro AL, Song Y, Wu A, Bhattacharjee A, Liu Y, Marzban L, Rocheleau JV, Fraser PE, Dai FF, Hu C, Wheeler MB. Pancreatic β cell-selective zinc transporter 8 insufficiency accelerates diabetes associated with islet amyloidosis. JCI Insight 2021; 6:143037. [PMID: 34027899 PMCID: PMC8262350 DOI: 10.1172/jci.insight.143037] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 04/21/2021] [Indexed: 01/25/2023] Open
Abstract
GWAS have shown that the common R325W variant of SLC30A8 (ZnT8) increases the risk of type 2 diabetes (T2D). However, ZnT8 haploinsufficiency is protective against T2D in humans, counterintuitive to earlier work in humans and mouse models. Therefore, whether decreasing ZnT8 activity is beneficial or detrimental to β cell function, especially under conditions of metabolic stress, remains unknown. In order to examine whether the existence of human islet amyloid polypeptide (hIAPP), a coresident of the insulin granule, affects the role of ZnT8 in regulating β cell function, hIAPP-expressing transgenics were generated with reduced ZnT8 (ZnT8B+/– hIAPP) or null ZnT8 (ZnT8B–/– hIAPP) expression specifically in β cells. We showed that ZnT8B–/– hIAPP mice on a high-fat diet had intensified amyloid deposition and further impaired glucose tolerance and insulin secretion compared with control, ZnT8B–/–, and hIAPP mice. This can in part be attributed to impaired glucose sensing and islet cell synchronicity. Importantly, ZnT8B+/– hIAPP mice were also glucose intolerant and had reduced insulin secretion and increased amyloid aggregation compared with controls. These data suggest that loss of or reduced ZnT8 activity in β cells heightened the toxicity induced by hIAPP, leading to impaired β cell function and glucose homeostasis associated with metabolic stress.
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Affiliation(s)
- Jie Xu
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Key Clinical Center for Metabolic Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Nadeeja Wijesekara
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto Western Hospital, Toronto, Ontario Canada
| | - Romario Regeenes
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Dana Al Rijjal
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Anthony L Piro
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Youchen Song
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Anne Wu
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Alpana Bhattacharjee
- Division of Advanced Diagnostics, Toronto General Hospital Research Institute, Toronto General Hospital, Toronto, Ontario, Canada
| | - Ying Liu
- Division of Advanced Diagnostics, Toronto General Hospital Research Institute, Toronto General Hospital, Toronto, Ontario, Canada
| | - Lucy Marzban
- College of Pharmacy, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Jonathan V Rocheleau
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.,Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Paul E Fraser
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto Western Hospital, Toronto, Ontario Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Feihan F Dai
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Cheng Hu
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Key Clinical Center for Metabolic Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Institute for Metabolic Disease, Fengxian Central Hospital Affiliated to Southern Medical University, Shanghai, China
| | - Michael B Wheeler
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
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Gómez Martín C, Martínez Grau G. Use of ImageJ as an image processing method for the assessment of post-surgical bruises. Skin Res Technol 2021; 27:655-667. [PMID: 33511699 DOI: 10.1111/srt.12997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/05/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE To develop, through ImageJ, an automated, non-invasive, objective method to analyze images of bruises that allowed quantifying variation in its size overtime for its later use in clinical trials. METHODS The ImageJ software was used to create automated macros that were executed on 38 images of the untreated eyes of 19 patients that participated in a post-marketing, randomized, controlled clinical trial that assessed the efficacy of a cream to reduce post-blepharoplasty minor hematomas. Three image processing systems were used with the macros created with ImageJ: RGB, RGB2, and HSB. The area of the bruises and the percentage of reduction were estimated for each one. Ophthalmologists also reviewed photographs by direct visual examination. RESULTS All three processing systems were useful for identifying the area of the bruise and studying its variation over time. RGB2 results were the most consistent with the direct visual examination conducted by ophthalmologists. CONCLUSION RGB2-automated image processing was considered the most appropriate for bruise analysis and represented an advantage over other manual techniques. However, it will be necessary to test it in clinical trials and other studies with a more significant number of samples and different locations.
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Husna N, Gascoigne NRJ, Tey HL, Ng LG, Tan Y. Reprint of "Multi-modal image cytometry approach - From dynamic to whole organ imaging". Cell Immunol 2020; 350:104086. [PMID: 32169249 DOI: 10.1016/j.cellimm.2020.104086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 12/13/2022]
Abstract
Optical imaging is a valuable tool to visualise biological processes in the context of the tissue. Each imaging modality provides the biologist with different types of information - cell dynamics and migration over time can be tracked with time-lapse imaging (e.g. intra-vital imaging); an overview of whole tissues can be acquired using optical clearing in conjunction with light sheet microscopy; finer details such as cellular morphology and fine nerve tortuosity can be imaged at higher resolution using the confocal microscope. Multi-modal imaging combined with image cytometry - a form of quantitative analysis of image datasets - provides an objective basis for comparing between sample groups. Here, we provide an overview of technical aspects to look out for in an image cytometry workflow, and discuss issues related to sample preparation, image post-processing and analysis for intra-vital and whole organ imaging.
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Affiliation(s)
- Nazihah Husna
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, 8A Biomedical Grove, Singapore 138648, Singapore; Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117545, Singapore
| | - Nicholas R J Gascoigne
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117545, Singapore
| | - Hong Liang Tey
- National Skin Centre, 1 Mandalay Road, Singapore 308205, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Singapore 308232, Singapore; Yong Loo Lin School of Medicine, National University of Singapore, 10 Medical Dr, Singapore 117597, Singapore
| | - Lai Guan Ng
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, 8A Biomedical Grove, Singapore 138648, Singapore; Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117545, Singapore.
| | - Yingrou Tan
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, 8A Biomedical Grove, Singapore 138648, Singapore; National Skin Centre, 1 Mandalay Road, Singapore 308205, Singapore.
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6
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Spatiotemporal regulation of type I interferon expression determines the antiviral polarization of CD4 + T cells. Nat Immunol 2020; 21:321-330. [PMID: 32066949 PMCID: PMC7043938 DOI: 10.1038/s41590-020-0596-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 01/10/2020] [Indexed: 01/01/2023]
Abstract
Differentiation of CD4+ T cells into either follicular helper T (TFH) or type 1 helper T (TH1) cells influences the balance between humoral and cellular adaptive immunity, but the mechanisms whereby pathogens elicit distinct effector cells are incompletely understood. Here, we analyzed the spatiotemporal dynamics of CD4+ T cells during infection with recombinant vesicular stomatitis virus (VSV), which induces early, potent neutralizing antibodies or recombinant lymphocytic choriomeningitis virus (LCMV), which induces a vigorous cellular response, but inefficient neutralizing antibodies, expressing the same T cell epitope. Early exposure of dendritic cells to type I interferon (IFN), which occurred during infection with VSV, induced the production of the cytokine IL-6 and drove TFH cell polarization, while late exposure to type I IFN, which occurred during infection with LCMV, did not induce IL-6 and allowed differentiation into TH1 cells. Thus, tight spatiotemporal regulation of type I IFN shapes antiviral CD4+ T cell differentiation, and might instruct vaccine design strategies.
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7
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Husna N, Gascoigne NR, Tey HL, Ng LG, Tan Y. Multi-modal image cytometry approach – From dynamic to whole organ imaging. Cell Immunol 2019; 344:103946. [DOI: 10.1016/j.cellimm.2019.103946] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 12/27/2022]
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Teh YC, Ding JL, Ng LG, Chong SZ. Capturing the Fantastic Voyage of Monocytes Through Time and Space. Front Immunol 2019; 10:834. [PMID: 31040854 PMCID: PMC6476989 DOI: 10.3389/fimmu.2019.00834] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 03/29/2019] [Indexed: 02/02/2023] Open
Abstract
Monocytes are a subset of cells that are categorized together with dendritic cells (DCs) and macrophages in the mononuclear phagocyte system (MPS). Despite sharing several phenotypic and functional characteristics with MPS cells, monocytes are unique cells with the ability to function as both precursor and effector cells in their own right. Before the development of hematopoietic stem cells (HSCs) in utero, monocytes are derived from erythro-myeloid precursors (EMPs) in the fetal liver that are important for populating the majority of tissue resident macrophages. After birth, monocytes arise from bone marrow (BM)-derived HSCs and are released into the circulation upon their maturation, where they survey peripheral tissues and maintain endothelial integrity. Upon sensing of microbial breaches or inflammatory stimuli, monocytes migrate into tissues where their plasticity allows them to differentiate into cells that resemble macrophages or DCs according to the environmental niche. Alternatively, they may also migrate into tissues in the absence of inflammation and remain in an undifferentiated state where they perform homeostatic roles. As monocytes are typically on the move, the availability of intravital imaging approaches has provided further insights into their trafficking patterns in distinct tissue compartments. In this review, we outline the importance of understanding their functional behavior in the context of tissue compartments, and how these studies may contribute towards improved vaccine and future therapeutic strategies.
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Affiliation(s)
- Ye Chean Teh
- Functional Immune Imaging, Singapore Immunology Network (SIgN), ASTAR (Agency for Science, Technology and Research), Biopolis, Singapore.,Department of Biological Sciences, National University of Singapore (NUS), Singapore, Singapore
| | - Jeak Ling Ding
- Department of Biological Sciences, National University of Singapore (NUS), Singapore, Singapore
| | - Lai Guan Ng
- Functional Immune Imaging, Singapore Immunology Network (SIgN), ASTAR (Agency for Science, Technology and Research), Biopolis, Singapore.,Department of Microbiology & Immunology, Immunology Programme, Life Science Institute, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Shu Zhen Chong
- Functional Immune Imaging, Singapore Immunology Network (SIgN), ASTAR (Agency for Science, Technology and Research), Biopolis, Singapore
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