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Peleman C, Hellemans S, Veeckmans G, Arras W, Zheng H, Koeken I, Van San E, Hassannia B, Walravens M, Kayirangwa E, Beyene NT, Van Herck MA, De Vos WH, Pintelon I, van Nassauw L, Oosterlinck B, Smet A, Vits L, Dirinck E, Verrijken A, De Man J, Van Eyck A, Kwanten WJ, Vonghia L, Driessen A, Augustyns K, Toyokuni S, De Winter B, Van Steenkiste C, Francque S, Vanden Berghe T. Ferroptosis is a targetable detrimental factor in metabolic dysfunction-associated steatotic liver disease. Cell Death Differ 2024:10.1038/s41418-024-01348-9. [PMID: 39060422 DOI: 10.1038/s41418-024-01348-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
There is an unmet clinical need for pharmacologic treatment for metabolic dysfunction-associated steatotic liver disease (MASLD). Hepatocyte cell death is a hallmark of this highly prevalent chronic liver disease, but the dominant type of cell death remains uncertain. Here we report that ferroptosis, an iron-catalyzed mode of regulated cell death, contributes to MASLD. Unsupervised clustering in a cohort of biopsy-proven MASLD patients revealed a subgroup with hepatic ferroptosis signature and lower glutathione peroxidase 4 (GPX4) levels. Likewise, a subgroup with reduced ferroptosis defenses was discerned in public transcriptomics datasets. Four weeks of choline-deficient L-amino acid-defined high-fat diet (CDAHFD) induced MASLD with ferroptosis in mice. Gpx4 overexpression did not affect steatohepatitis, instead CDAHFD protected from morbidity due to hepatocyte-specific Gpx4 knockout. The ferroptosis inhibitor UAMC-3203 attenuated steatosis and alanine aminotransferase in CDAHFD and a second model, i.e., the high-fat high-fructose diet (HFHFD). The effect of monounsaturated and saturated fatty acids supplementation on ferroptosis susceptibility was assessed in human HepG2 cells. Fat-laden HepG2 showed a drop in ferroptosis defenses, increased phosphatidylglycerol with two polyunsaturated fatty acid (PUFA) lipid tails, and sustained ferroptosis sensitivity. In conclusion, this study identified hepatic ferroptosis as a detrimental factor in MASLD patients. Unexpectedly, non-PUFA supplementation to hepatocytes altered lipid bilayer composition to maintain ferroptosis sensitivity. Based on findings in in vivo models, ferroptosis inhibition represents a promising therapeutic target in MASLD.
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Affiliation(s)
- Cédric Peleman
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium
- Cell Death Signaling Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Stig Hellemans
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Geraldine Veeckmans
- Cell Death Signaling Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Wout Arras
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Hao Zheng
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ine Koeken
- Cell Death Signaling Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
- VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Emily Van San
- Cell Death Signaling Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Behrouz Hassannia
- Cell Death Signaling Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
- VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Magali Walravens
- Cell Death Signaling Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Edissa Kayirangwa
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Nateneal Tamerat Beyene
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium
| | - Mikhaïl Alfons Van Herck
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium
| | - Winnok Harald De Vos
- Laboratory of Cell Biology & Histology, Department of Veterinary Sciences, University of Antwerp, Antwerp, Belgium
- Antwerp Centre for Advanced Microscopy (ACAM), University of Antwerp, Antwerp, Belgium
- µNEURO Research Excellence Consortium on Multimodal Neuromics, University of Antwerp, Antwerp, Belgium
| | - Isabel Pintelon
- Laboratory of Cell Biology & Histology, Department of Veterinary Sciences, University of Antwerp, Antwerp, Belgium
- Antwerp Centre for Advanced Microscopy (ACAM), University of Antwerp, Antwerp, Belgium
- µNEURO Research Excellence Consortium on Multimodal Neuromics, University of Antwerp, Antwerp, Belgium
| | - Luc van Nassauw
- Department of ASTARC, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Baptiste Oosterlinck
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Annemieke Smet
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Lieve Vits
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Eveline Dirinck
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Endocrinology, Diabetology and Metabolism, Antwerp University Hospital, Edegem, Belgium
| | - An Verrijken
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Endocrinology, Diabetology and Metabolism, Antwerp University Hospital, Edegem, Belgium
| | - Joris De Man
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Annelies Van Eyck
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Pediatrics, Antwerp University Hospital, Edegem, Belgium
| | - Wilhelmus Josephus Kwanten
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium
| | - Luisa Vonghia
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium
| | - Ann Driessen
- Department of Pathology, Antwerp University Hospital, Antwerp, Belgium
- Department of Molecular Imaging, Pathology, Radiotherapy, Oncology, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Koen Augustyns
- Laboratory of Medicinal Chemistry, University of Antwerp, Antwerp, Belgium
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Center for Low-temperature Plasma Sciences, Nagoya University, Nagoya, Japan
| | - Benedicte De Winter
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium
| | - Christophe Van Steenkiste
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium
| | - Sven Francque
- Laboratory of Experimental Medicine and Pediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium
| | - Tom Vanden Berghe
- Cell Death Signaling Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.
- VIB-UGent Center for Inflammation Research, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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Hu J, Yang F, Liu C, Wang N, Xiao Y, Zhai Y, Wang X, Zhang R, Gao L, Xu M, Wang J, Liu Z, Huang S, Liu W, Hu Y, Liu F, Guo Y, Wang L, Yuan J, Zhang Z, Chu J. UFObow: A single-wavelength excitable Brainbow for simultaneous multicolor ex-vivo and in-vivo imaging of mammalian cells. Commun Biol 2024; 7:394. [PMID: 38561421 PMCID: PMC10984974 DOI: 10.1038/s42003-024-06062-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 03/18/2024] [Indexed: 04/04/2024] Open
Abstract
Brainbow is a genetic cell-labeling technique that allows random colorization of multiple cells and real-time visualization of cell fate within a tissue, providing valuable insights into understanding complex biological processes. However, fluorescent proteins (FPs) in Brainbow have distinct excitation spectra with peak difference greater than 35 nm, which requires sequential imaging under multiple excitations and thus leads to long acquisition times. In addition, they are not easily used together with other fluorophores due to severe spectral bleed-through. Here, we report the development of a single-wavelength excitable Brainbow, UFObow, incorporating three newly developed blue-excitable FPs. We have demonstrated that UFObow enables not only tracking the growth dynamics of tumor cells in vivo but also mapping spatial distribution of immune cells within a sub-cubic centimeter tissue, revealing cell heterogeneity. This provides a powerful means to explore complex biology in a simultaneous imaging manner at a single-cell resolution in organs or in vivo.
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Affiliation(s)
- Jiahong Hu
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Fangfang Yang
- Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology & CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Chong Liu
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Nengzhi Wang
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Yinghan Xiao
- Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology & CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Yujie Zhai
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Xinru Wang
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Ren Zhang
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Lulu Gao
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Mengli Xu
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, Hainan, 570228, China
| | - Jialu Wang
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Zheng Liu
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, Hainan, 570228, China
| | - Songlin Huang
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, Hainan, 570228, China
| | - Wenfeng Liu
- Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology & CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Yajing Hu
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Feng Liu
- Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology & CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Yuqi Guo
- Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology & CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Liang Wang
- Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology & CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Jing Yuan
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.
| | - Zhihong Zhang
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, Hainan, 570228, China.
| | - Jun Chu
- Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology & CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
- Biomedical Imaging Science and System Key Laboratory, Chinese Academy of Sciences, Shenzhen, 518055, China.
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Peleman C, Francque S, Berghe TV. Emerging role of ferroptosis in metabolic dysfunction-associated steatotic liver disease: revisiting hepatic lipid peroxidation. EBioMedicine 2024; 102:105088. [PMID: 38537604 PMCID: PMC11026979 DOI: 10.1016/j.ebiom.2024.105088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/22/2024] [Accepted: 03/12/2024] [Indexed: 04/14/2024] Open
Abstract
Metabolic dysfunction-associated steatohepatitis (MASH) is characterised by cell death of parenchymal liver cells which interact with their microenvironment to drive disease activity and liver fibrosis. The identification of the major death type could pave the way towards pharmacotherapy for MASH. To date, increasing evidence suggest a type of regulated cell death, named ferroptosis, which occurs through iron-catalysed peroxidation of polyunsaturated fatty acids (PUFA) in membrane phospholipids. Lipid peroxidation enjoys renewed interest in the light of ferroptosis, as druggable target in MASH. This review recapitulates the molecular mechanisms of ferroptosis in liver physiology, evidence for ferroptosis in human MASH and critically appraises the results of ferroptosis targeting in preclinical MASH models. Rewiring of redox, iron and PUFA metabolism in MASH creates a proferroptotic environment involved in MASH-related hepatocellular carcinoma (HCC) development. Ferroptosis induction might be a promising novel approach to eradicate HCC, while its inhibition might ameliorate MASH disease progression.
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Affiliation(s)
- Cédric Peleman
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium; Department of Gastroenterology and Hepatology, Antwerp University Hospital, Edegem, Belgium
| | - Sven Francque
- Laboratory of Experimental Medicine and Paediatrics, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium; Department of Gastroenterology and Hepatology, Antwerp University Hospital, Edegem, Belgium.
| | - Tom Vanden Berghe
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Laboratory of Pathophysiology, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
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4
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Azam I, Benson JD. Multiscale transport and 4D time-lapse imaging in precision-cut liver slices (PCLS). PeerJ 2024; 12:e16994. [PMID: 38426134 PMCID: PMC10903333 DOI: 10.7717/peerj.16994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 02/01/2024] [Indexed: 03/02/2024] Open
Abstract
Background Monitoring cellular processes across different levels of complexity, from the cellular to the tissue scale, is important for understanding tissue structure and function. However, it is challenging to monitor and estimate these structural and dynamic interactions within three-dimensional (3D) tissue models. Objective The aim of this study was to design a method for imaging, tracking, and quantifying 3D changes in cell morphology (shape and size) within liver tissue, specifically a precision-cut liver slice (PCLS). A PCLS is a 3D model of the liver that allows the study of the structure and function of liver cells in their native microenvironment. Methods Here, we present a method for imaging liver tissue during anisosmotic exposure in a multispectral four-dimensional manner. Three metrics of tissue morphology were measured to quantify the effects of osmotic stress on liver tissue. We estimated the changes in the volume of whole precision cut liver slices, quantified the changes in nuclei position, and calculated the changes in volumetric responses of tissue-embedded cells. Results During equilibration with cell-membrane-permeating and non-permeating solutes, the whole tissue experiences shrinkage and expansion. As nuclei showed a change in position and directional displacement under osmotic stress, we demonstrate that nuclei could be used as a probe to measure local osmotic and mechanical stress. Moreover, we demonstrate that cells change their volume within tissue slices as a result of osmotic perturbation and that this change in volume is dependent on the position of the cell within the tissue and the duration of the exposure. Conclusion The results of this study have implications for a better understanding of multiscale transport, mechanobiology, and triggered biological responses within complex biological structures.
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Affiliation(s)
- Iqra Azam
- Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - James D. Benson
- Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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5
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Teixeira L, Pereira-Dutra FS, Reis PA, Cunha-Fernandes T, Yoshinaga MY, Souza-Moreira L, Souza EK, Barreto EA, Silva TP, Espinheira-Silva H, Igreja T, Antunes MM, Bombaça ACS, Gonçalves-de-Albuquerque CF, Menezes GB, Hottz ED, Menna-Barreto RF, Maya-Monteiro CM, Bozza FA, Miyamoto S, Melo RC, Bozza PT. Prevention of lipid droplet accumulation by DGAT1 inhibition ameliorates sepsis-induced liver injury and inflammation. JHEP Rep 2024; 6:100984. [PMID: 38293685 PMCID: PMC10827501 DOI: 10.1016/j.jhepr.2023.100984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 11/11/2023] [Accepted: 11/21/2023] [Indexed: 02/01/2024] Open
Abstract
Background & Aims Lipid droplet (LD) accumulation in cells and tissues is understood to be an evolutionarily conserved tissue tolerance mechanism to prevent lipotoxicity caused by excess lipids; however, the presence of excess LDs has been associated with numerous diseases. Sepsis triggers the reprogramming of lipid metabolism and LD accumulation in cells and tissues, including the liver. The functions and consequences of sepsis-triggered liver LD accumulation are not well known. Methods Experimental sepsis was induced by CLP (caecal ligation and puncture) in mice. Markers of hepatic steatosis, liver injury, hepatic oxidative stress, and inflammation were analysed using a combination of functional, imaging, lipidomic, protein expression and immune-enzymatic assays. To prevent LD formation, mice were treated orally with A922500, a pharmacological inhibitor of DGAT1. Results We identified that liver LD overload correlates with liver injury and sepsis severity. Moreover, the progression of steatosis from 24 h to 48 h post-CLP occurs in parallel with increased cytokine expression, inflammatory cell recruitment and oxidative stress. Lipidomic analysis of purified LDs demonstrated that sepsis leads LDs to harbour increased amounts of unsaturated fatty acids, mostly 18:1 and 18:2. An increased content of lipoperoxides within LDs was also observed. Conversely, the impairment of LD formation by inhibition of the DGAT1 enzyme reduces levels of hepatic inflammation and lipid peroxidation markers and ameliorates sepsis-induced liver injury. Conclusions Our results indicate that sepsis triggers lipid metabolism alterations that culminate in increased liver LD accumulation. Increased LDs are associated with disease severity and liver injury. Moreover, inhibition of LD accumulation decreased the production of inflammatory mediators and lipid peroxidation while improving tissue function, suggesting that LDs contribute to the pathogenesis of liver injury triggered by sepsis. Impact and Implications Sepsis is a complex life-threatening syndrome caused by dysregulated inflammatory and metabolic host responses to infection. The observation that lipid droplets may contribute to sepsis-associated organ injury by amplifying lipid peroxidation and inflammation provides a rationale for therapeutically targeting lipid droplets and lipid metabolism in sepsis.
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Affiliation(s)
- Lívia Teixeira
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Filipe S. Pereira-Dutra
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
| | - Patrícia A. Reis
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Biochemistry Department, Roberto Alcântara Gomes Biology Institute, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tamires Cunha-Fernandes
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
| | - Marcos Y. Yoshinaga
- Laboratory of Modified Lipids, Department of Biochemistry, University of São Paulo, São Paulo, Brazil
| | - Luciana Souza-Moreira
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Ellen K. Souza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Ester A. Barreto
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Thiago P. Silva
- Laboratory of Cellular Biology, Department of Biology, Institute of Biological Sciences (ICB), Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Hugo Espinheira-Silva
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
| | - Tathiany Igreja
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Maísa M. Antunes
- Center for Gastrointestinal Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Ana Cristina S. Bombaça
- Laboratory of Cellular Biology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Laboratory of Parasitic Disease, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Cassiano F. Gonçalves-de-Albuquerque
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gustavo B. Menezes
- Center for Gastrointestinal Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Eugênio D. Hottz
- Laboratory of Immunothrombosis, Department of Biochemistry, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
| | | | - Clarissa M. Maya-Monteiro
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
| | - Fernando A. Bozza
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
- Intensive Care Medicine Laboratory, INI, FIOCRUZ, Rio de Janeiro, Brazil
- D'Or Institute Research and Education (IDOr), Rio de Janeiro, Brazil
| | - Sayuri Miyamoto
- Laboratory of Modified Lipids, Department of Biochemistry, University of São Paulo, São Paulo, Brazil
| | - Rossana C.N. Melo
- Laboratory of Cellular Biology, Department of Biology, Institute of Biological Sciences (ICB), Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Patrícia T. Bozza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
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6
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Lazzeri-Barcelo F, Oliva-Vilarnau N, Baniol M, Leibiger B, Bergmann O, Lauschke VM, Leibiger IB, Moruzzi N, Berggren PO. Intraocular liver spheroids for non-invasive high-resolution in vivo monitoring of liver cell function. Nat Commun 2024; 15:767. [PMID: 38278787 PMCID: PMC10817975 DOI: 10.1038/s41467-024-45122-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 01/16/2024] [Indexed: 01/28/2024] Open
Abstract
Longitudinal monitoring of liver function in vivo is hindered by the lack of high-resolution non-invasive imaging techniques. Using the anterior chamber of the mouse eye as a transplantation site, we have established a platform for longitudinal in vivo imaging of liver spheroids at cellular resolution. Transplanted liver spheroids engraft on the iris, become vascularized and innervated, retain hepatocyte-specific and liver-like features and can be studied by in vivo confocal microscopy. Employing fluorescent probes administered intravenously or spheroids formed from reporter mice, we showcase the potential use of this platform for monitoring hepatocyte cell cycle activity, bile secretion and lipoprotein uptake. Moreover, we show that hepatic lipid accumulation during diet-induced hepatosteatosis is mirrored in intraocular in vivo grafts. Here, we show a new technology which provides a crucial and unique tool to study liver physiology and disease progression in pre-clinical and basic research.
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Affiliation(s)
- Francesca Lazzeri-Barcelo
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Stockholm, Sweden
| | - Nuria Oliva-Vilarnau
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Marion Baniol
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Barbara Leibiger
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Stockholm, Sweden
| | - Olaf Bergmann
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
- Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany
- Department of Pharmacology and Toxicology, University Medical Center Goettingen, Goettingen, Germany
| | - Volker M Lauschke
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
- University of Tübingen, Tübingen, Germany
| | - Ingo B Leibiger
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Stockholm, Sweden
| | - Noah Moruzzi
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Stockholm, Sweden.
| | - Per-Olof Berggren
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Stockholm, Sweden
- Tecnológico de Monterrey, Monterrey, NL, Mexico
- Diabetes Research Institute, University of Miami. Miller School of Medicine, Miami, Fl, USA
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7
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Silva IS, Almeida AD, Lima Filho ACM, Fernandes-Braga W, Barra A, Oliveira HMC, Cassali GD, Capettini LSA, Menezes GB, Alvarez-Leite JI, Leite MF, Klein A. Platelet-activating factor and protease-activated receptor 2 cooperate to promote neutrophil recruitment and lung inflammation through nuclear factor-kappa B transactivation. Sci Rep 2023; 13:21637. [PMID: 38062077 PMCID: PMC10703791 DOI: 10.1038/s41598-023-48365-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023] Open
Abstract
Although it is well established that platelet-activated receptor (PAF) and protease-activated receptor 2 (PAR2) play a pivotal role in the pathophysiology of lung and airway inflammatory diseases, a role for a PAR2-PAFR cooperation in lung inflammation has not been investigated. Here, we investigated the role of PAR2 in PAF-induced lung inflammation and neutrophil recruitment in lungs of BALB/c mice. Mice were pretreated with the PAR2 antagonist ENMD1068, PAF receptor (PAFR) antagonist WEB2086, or aprotinin prior to intranasal instillation of carbamyl-PAF (C-PAF) or the PAR2 agonist peptide SLIGRL-NH2 (PAR2-AP). Leukocyte infiltration in bronchoalveolar lavage fluid (BALF), C-X-C motif ligand 1 (CXCL)1 and CXCL2 chemokines, myeloperoxidase (MPO), and N-acetyl-glycosaminidase (NAG) levels in BALF, or lung inflammation were evaluated. Intracellular calcium signaling, PAFR/PAR2 physical interaction, and the expression of PAR2 and nuclear factor-kappa B (NF-КB, p65) transcription factor were investigated in RAW 264.7 cells stimulated with C-PAF in the presence or absence of ENMD1068. C-PAF- or PAR2-AP-induced neutrophil recruitment into lungs was inhibited in mice pretreated with ENMD1068 and aprotinin or WEB2086, respectively. PAR2 blockade impaired C-PAF-induced neutrophil rolling and adhesion, lung inflammation, and production of MPO, NAG, CXCL1, and CXCL2 production in lungs of mice. PAFR activation reduced PAR2 expression and physical interaction of PAR2 and PAFR; co-activation is required for PAFR/PAR2 physical interaction. PAR2 blockade impaired C-PAF-induced calcium signal and NF-κB p65 translocation in RAW 264.7 murine macrophages. This study provides the first evidence for a cooperation between PAFR and PAR2 mediating neutrophil recruitment, lung inflammation, and macrophage activation.
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Affiliation(s)
- Irismara Sousa Silva
- Laboratory of Inflammation and Proteases, Department of Pharmacology, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Aline D Almeida
- Laboratory of Inflammation and Proteases, Department of Pharmacology, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | | | - Weslley Fernandes-Braga
- Laboratory of Atherosclerosis and Nutritional Biochemistry (LABIN-UFMG), Department of Biochemistry and Immunology, ICB/UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Ayslan Barra
- Laboratory of Inflammation and Proteases, Department of Pharmacology, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | | | | | - Luciano S A Capettini
- Laboratory of Vascular Biology, Department of Pharmacology, ICB/UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Gustavo B Menezes
- Department of Morphology, ICB/UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Jacqueline I Alvarez-Leite
- Laboratory of Atherosclerosis and Nutritional Biochemistry (LABIN-UFMG), Department of Biochemistry and Immunology, ICB/UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Maria F Leite
- Department of Physiology and Biophysics, ICB/UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - André Klein
- Laboratory of Inflammation and Proteases, Department of Pharmacology, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.
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8
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Cao L, Ma L, Zhao J, Wang X, Fang X, Li W, Qi Y, Tang Y, Liu J, Peng S, Yang L, Zhou L, Li L, Hu X, Ji Y, Hou Y, Zhao Y, Zhang X, Zhao YY, Zhao Y, Wei Y, Malik AB, Saiyin H, Xu J. An unexpected role of neutrophils in clearing apoptotic hepatocytes in vivo. eLife 2023; 12:RP86591. [PMID: 37728612 PMCID: PMC10511239 DOI: 10.7554/elife.86591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023] Open
Abstract
Billions of apoptotic cells are removed daily in a human adult by professional phagocytes (e.g. macrophages) and neighboring nonprofessional phagocytes (e.g. stromal cells). Despite being a type of professional phagocyte, neutrophils are thought to be excluded from apoptotic sites to avoid tissue inflammation. Here, we report a fundamental and unexpected role of neutrophils as the predominant phagocyte responsible for the clearance of apoptotic hepatic cells in the steady state. In contrast to the engulfment of dead cells by macrophages, neutrophils burrowed directly into apoptotic hepatocytes, a process we term perforocytosis, and ingested the effete cells from the inside. The depletion of neutrophils caused defective removal of apoptotic bodies, induced tissue injury in the mouse liver, and led to the generation of autoantibodies. Human autoimmune liver disease showed similar defects in the neutrophil-mediated clearance of apoptotic hepatic cells. Hence, neutrophils possess a specialized immunologically silent mechanism for the clearance of apoptotic hepatocytes through perforocytosis, and defects in this key housekeeping function of neutrophils contribute to the genesis of autoimmune liver disease.
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Affiliation(s)
- Luyang Cao
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory (GRMH-GDL)GuangzhouChina
| | - Lixiang Ma
- Department of Anatomy, Histology & Embryology, Shanghai Medical CollegeShanghaiChina
| | - Juan Zhao
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
| | - Xiangyu Wang
- Department of Anatomy, Histology & Embryology, Shanghai Medical CollegeShanghaiChina
| | - Xinzou Fang
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
| | - Wei Li
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory (GRMH-GDL)GuangzhouChina
| | - Yawen Qi
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory (GRMH-GDL)GuangzhouChina
| | - Yingkui Tang
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
| | - Jieya Liu
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
| | - Shengxian Peng
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
| | - Li Yang
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
| | - Liangxue Zhou
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
| | - Li Li
- Department of Anatomy, Histology & Embryology, Shanghai Medical CollegeShanghaiChina
| | - Xiaobo Hu
- Clinical Laboratory, Longhua Hospital, Shanghai University of Traditional MedicineShanghaiChina
| | - Yuan Ji
- Department of Pathology, Zhongshan Hospital Fudan UniversityShanghaiChina
| | - Yingyong Hou
- Department of Pathology, Zhongshan Hospital Fudan UniversityShanghaiChina
| | - Yi Zhao
- Department of Rheumatology and Immunology, West China Hospital, Sichuan UniversityChengduChina
| | - Xianming Zhang
- Program for Lung and Vascular Biology, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, and Department of Pediatrics, Division of Critical Care, Northwestern University Feinberg School of MedicineChicagoUnited States
| | - You-yang Zhao
- Program for Lung and Vascular Biology, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, and Department of Pediatrics, Division of Critical Care, Northwestern University Feinberg School of MedicineChicagoUnited States
| | - Yong Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of SciencesBeijingChina
| | - Yuquan Wei
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
| | - Asrar B Malik
- Department of Pharmacology, University of Illinois, College of MedicineChicagoUnited States
| | - Hexige Saiyin
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan UniversityShanghaiChina
| | - Jingsong Xu
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan UniversityChengduChina
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9
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Zucoloto AZ, Schlechte J, Ignacio A, Thomson CA, Pyke S, Yu IL, Geuking MB, McCoy KD, Yipp BG, Gillrie MR, McDonald B. Vascular traffic control of neutrophil recruitment to the liver by microbiota-endothelium crosstalk. Cell Rep 2023; 42:112507. [PMID: 37195866 DOI: 10.1016/j.celrep.2023.112507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/20/2023] [Accepted: 04/28/2023] [Indexed: 05/19/2023] Open
Abstract
During bloodstream infections, neutrophils home to the liver as part of an intravascular immune response to eradicate blood-borne pathogens, but the mechanisms regulating this crucial response are unknown. Using in vivo imaging of neutrophil trafficking in germ-free and gnotobiotic mice, we demonstrate that the intestinal microbiota guides neutrophil homing to the liver in response to infection mediated by the microbial metabolite D-lactate. Commensal-derived D-lactate augments neutrophil adhesion in the liver independent of granulopoiesis in bone marrow or neutrophil maturation and activation in blood. Instead, gut-to-liver D-lactate signaling primes liver endothelial cells to upregulate adhesion molecule expression in response to infection and promote neutrophil adherence. Targeted correction of microbiota D-lactate production in a model of antibiotic-induced dysbiosis restores neutrophil homing to the liver and reduces bacteremia in a model of Staphylococcus aureus infection. These findings reveal long-distance traffic control of neutrophil recruitment to the liver by microbiota-endothelium crosstalk.
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Affiliation(s)
- Amanda Z Zucoloto
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Jared Schlechte
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Aline Ignacio
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Carolyn A Thomson
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Shannon Pyke
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Ian-Ling Yu
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Markus B Geuking
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Microbiology, Immunology, and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Kathy D McCoy
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Bryan G Yipp
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Mark R Gillrie
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Microbiology, Immunology, and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Braedon McDonald
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
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10
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Hsp65-producing Lactococcus lactis inhibits experimental autoimmune encephalomyelitis by preventing cell migration into spinal cord. Cell Immunol 2023; 384:104661. [PMID: 36621093 DOI: 10.1016/j.cellimm.2022.104661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/19/2022] [Accepted: 12/29/2022] [Indexed: 01/03/2023]
Abstract
Multiple sclerosis is an autoimmune disease that affects the central nervous system. Because of its complexity and the difficulty to treat, searching for immunoregulatory responses that reduce the clinical signs of disease by non-aggressive mechanisms and without adverse effects is a scientific challenge. Herein we propose a protocol of oral tolerance induction that prevented and controlled MOG-induced experimental autoimmune encephalomyelitis (EAE) in C57BL/6 mice. The genetically modified strain HSP65-producing Lactococcus lactis was orally administered for 5 consecutive days either before or during disease development in mice. Both protocols of feeding HSP65 resulted in significant reduction in the clinical score of EAE. Frequencies of LAP+CD4+Foxp3- regulatory T cells were higher in spleens and inguinal lymph nodes of fed mice. In addition, intravital microscopy showed that adherence of leukocytes to venules in the spinal cord was reduced in orally treated mice. Oral treatment with HSP65-producing L.lactis prevented leukocytes to leave the secondary lymphoid organs, therefore they could not reach the central nervous system. Despite the inhibition of pathological immune response that drive EAE development, activated T cells were at normal frequencies suggesting that oral tolerance did not induce general immunosuppression, but it led to specific control of pathogenic T cells. Our results indicate a novel therapeutic strategy to prevent and control autoimmune diseases such as multiple sclerosis.
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11
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Teijeira A, Garasa S, Luri-Rey C, de Andrea C, Gato M, Molina C, Kaisho T, Cirella A, Azpilikueta A, Wculek SK, Egea J, Olivera I, Rodriguez I, Rouzaut A, Verkhusha V, Valencia K, Sancho D, Berraondo P, Melero I. Depletion of Conventional Type-1 Dendritic Cells in Established Tumors Suppresses Immunotherapy Efficacy. Cancer Res 2022; 82:4373-4385. [PMID: 36130020 DOI: 10.1158/0008-5472.can-22-1046] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/29/2022] [Accepted: 09/19/2022] [Indexed: 01/24/2023]
Abstract
The ability of conventional type-1 dendritic cells (cDC1) to cross-present tumor antigens to CD8+ T cells is critical for the induction of antitumor CTLs. Mice that are constitutively deficient in cDC1 cells have been reported to fail to respond to immunotherapy strategies based on checkpoint inhibitors. However, further work is needed to clarify the precise time during immunotherapy treatment that cDC1 cells are required for the beneficial effect of treatment. Here, we used a refined XCR1-DTR-Venus transgenic mouse model to acutely deplete cDC1 cells and trace their behavior using intravital microscopy. Diphtheria toxin-mediated cDC1 depletion prior to immunotherapy treatment with anti-PD-1 and/or anti-CD137 immunostimulatory mAbs completely ablated antitumor efficacy. The efficacy of adoptive T-cell therapy was also hampered by prior cDC1 depletion. After the onset of immunotherapy treatment, depletion of cDC1s only moderately reduced the therapeutic efficacy of anti-PD-1 and anti-CD137 mAbs. Intravital microscopy of liver-engrafted tumors revealed changes in the intratumoral behavior of cDC1 cells in mice receiving immunotherapy, and treatment with diphtheria toxin to deplete cDC1s impaired tumor T-cell infiltration and function. These results reveal that the functional integrity of the cDC1 compartment is required at the onset of various immunotherapies to successfully treat established tumors. SIGNIFICANCE These findings reveal the intratumoral behavior of cDC1 dendritic cells in transgenic mouse models and demonstrate that the efficacy of immunotherapy regimens is precluded by elimination of these cells.
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Affiliation(s)
- Alvaro Teijeira
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain.,Navarra Institute of Health Research (IDISNA), Pamplona, Spain.,Centro de Investigación Biomédica en Red en Oncología (CIBERONC), Madrid, Spain
| | - Saray Garasa
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain.,Navarra Institute of Health Research (IDISNA), Pamplona, Spain
| | - Carlos Luri-Rey
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain
| | - Carlos de Andrea
- Navarra Institute of Health Research (IDISNA), Pamplona, Spain.,Pathology Department, Clinica Universidad de Navarra, Pamplona, Spain
| | - Maria Gato
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain
| | - Carmen Molina
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain
| | - Tsuneyasu Kaisho
- Department of Immunology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Assunta Cirella
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain
| | - Arantza Azpilikueta
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain.,Navarra Institute of Health Research (IDISNA), Pamplona, Spain.,Centro de Investigación Biomédica en Red en Oncología (CIBERONC), Madrid, Spain
| | - Steffanie K Wculek
- Immunobiology Lab, Centro Nacional de Investigación Cardiovasculares (CNIC), Madrid, Spain
| | - Josune Egea
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain
| | - Irene Olivera
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain
| | - Inmaculada Rodriguez
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain.,Navarra Institute of Health Research (IDISNA), Pamplona, Spain.,Centro de Investigación Biomédica en Red en Oncología (CIBERONC), Madrid, Spain
| | - Ana Rouzaut
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain.,Navarra Institute of Health Research (IDISNA), Pamplona, Spain
| | - Vladislav Verkhusha
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York
| | - Karmele Valencia
- Navarra Institute of Health Research (IDISNA), Pamplona, Spain.,Centro de Investigación Biomédica en Red en Oncología (CIBERONC), Madrid, Spain.,Oncology Department, CIMA, Universidad de Navarra, Pamplona, Spain
| | - David Sancho
- Immunobiology Lab, Centro Nacional de Investigación Cardiovasculares (CNIC), Madrid, Spain
| | - Pedro Berraondo
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain.,Navarra Institute of Health Research (IDISNA), Pamplona, Spain.,Centro de Investigación Biomédica en Red en Oncología (CIBERONC), Madrid, Spain
| | - Ignacio Melero
- Immunology and Immunotherapy Department, Center for Applied Medical Research (CIMA), Universidad de Navarra, Pamplona, Spain.,Navarra Institute of Health Research (IDISNA), Pamplona, Spain.,Centro de Investigación Biomédica en Red en Oncología (CIBERONC), Madrid, Spain.,Deparments of Immunology and Oncology, Clinica Universidad de Navarra, Pamplona, Spain
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12
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Porto-Pedrosa MLM, de Miranda CDM, Lopes ME, Nakagaki BN, Mafra K, de Paula CMP, Diniz AB, Costa KMDO, Antunes MM, Oliveira AG, Balderas R, Lopes RP, Menezes GB. High-dimensional intravital microscopy reveals major changes in splenic immune system during postnatal development. Front Immunol 2022; 13:1002919. [PMID: 36531990 PMCID: PMC9755845 DOI: 10.3389/fimmu.2022.1002919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 11/10/2022] [Indexed: 12/05/2022] Open
Abstract
Spleen is a key organ for immunologic surveillance, acting as a firewall for antigens and parasites that spread through the blood. However, how spleen leukocytes evolve across the developmental phase, and how they spatially organize and interact in vivo is still poorly understood. Using a novel combination of selected antibodies and fluorophores to image in vivo the spleen immune environment, we described for the first time the dynamics of immune development across postnatal period. We found that spleens from adults and infants had similar numbers and arrangement of lymphoid cells. In contrast, splenic immune environment in newborns is sharply different from adults in almost all parameters analysed. Using this in vivo approach, B cells were the most frequent subtype throughout the development. Also, we revealed how infections - using a model of malaria - can change the spleen immune profile in adults and infants, which could become the key to understanding different severity grades of infection. Our new imaging solutions can be extremely useful for different groups in all areas of biological investigation, paving a way for new intravital approaches and advances.
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Affiliation(s)
- Maria Luiza Mundim Porto-Pedrosa
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Camila Dutra Moreira de Miranda
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mateus Eustáquio Lopes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Brenda Naemi Nakagaki
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Kassiana Mafra
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Cristina Maria Pinto de Paula
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ariane Barros Diniz
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Karen Marques de Oliveira Costa
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maisa Mota Antunes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - André Gustavo Oliveira
- Departamento de Fisiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Robert Balderas
- BD Biosciences, Department of Biological Sciences, San Jose, CA, United States
| | - Rodrigo Pestana Lopes
- BD Biosciences, Department of Medical & Scientific Affairs, São Paulo, São Paulo, Brazil
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil,*Correspondence: Gustavo Batista Menezes,
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13
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Hirako IC, Antunes MM, Rezende RM, Hojo-Souza NS, Figueiredo MM, Dias T, Nakaya H, Menezes GB, Gazzinelli RT. Uptake of Plasmodium chabaudi hemozoin drives Kupffer cell death and fuels superinfections. Sci Rep 2022; 12:19805. [PMID: 36396745 PMCID: PMC9671901 DOI: 10.1038/s41598-022-23858-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 11/07/2022] [Indexed: 11/18/2022] Open
Abstract
Kupffer cells (KCs) are self-maintained tissue-resident macrophages that line liver sinusoids and play an important role on host defense. It has been demonstrated that upon infection or intense liver inflammation, KCs might be severely depleted and replaced by immature monocytic cells; however, the mechanisms of cell death and the alterations on liver immunity against infections deserves further investigation. We explored the impact of acute Plasmodium infection on KC biology and on the hepatic immune response against secondary infections. Similar to patients, infection with Plasmodium chabaudi induced acute liver damage as determined by serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) elevation. This was associated with accumulation of hemozoin, increased of proinflammatory response and impaired bacterial and viral clearance, which led to pathogen spread to other organs. In line with this, mice infected with Plasmodium had enhanced mortality during secondary infections, which was associated with increased production of mitochondrial superoxide, lipid peroxidation and increased free iron within KCs-hallmarks of cell death by ferroptosis. Therefore, we revealed that accumulation of iron with KCs, triggered by uptake of circulating hemozoin, is a novel mechanism of macrophage depletion and liver inflammation during malaria, providing novel insights on host susceptibility to secondary infections. Malaria can cause severe liver damage, along with depletion of liver macrophages, which can predispose individuals to secondary infections and enhance the chances of death.
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Affiliation(s)
- Isabella C Hirako
- Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brazil
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Lazare Research Building, 3rd Floor, Worcester, MA, USA
| | - Maísa Mota Antunes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rafael Machado Rezende
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | | | - Thomaz Dias
- Escola de Ciências Farmacêuticas - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Helder Nakaya
- Escola de Ciências Farmacêuticas - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ricardo Tostes Gazzinelli
- Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brazil.
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Lazare Research Building, 3rd Floor, Worcester, MA, USA.
- Departamento de Bioquímica E Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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14
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Amaral EP, Foreman TW, Namasivayam S, Hilligan KL, Kauffman KD, Barbosa Bomfim CC, Costa DL, Barreto-Duarte B, Gurgel-Rocha C, Santana MF, Cordeiro-Santos M, Du Bruyn E, Riou C, Aberman K, Wilkinson RJ, Barber DL, Mayer-Barber KD, Andrade BB, Sher A. GPX4 regulates cellular necrosis and host resistance in Mycobacterium tuberculosis infection. J Exp Med 2022; 219:e20220504. [PMID: 36069923 PMCID: PMC9458471 DOI: 10.1084/jem.20220504] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/23/2022] [Accepted: 08/11/2022] [Indexed: 01/15/2023] Open
Abstract
Cellular necrosis during Mycobacterium tuberculosis (Mtb) infection promotes both immunopathology and bacterial dissemination. Glutathione peroxidase-4 (Gpx4) is an enzyme that plays a critical role in preventing iron-dependent lipid peroxidation-mediated cell death (ferroptosis), a process previously implicated in the necrotic pathology seen in Mtb-infected mice. Here, we document altered GPX4 expression, glutathione levels, and lipid peroxidation in patients with active tuberculosis and assess the role of this pathway in mice genetically deficient in or overexpressing Gpx4. We found that Gpx4-deficient mice infected with Mtb display substantially increased lung necrosis and bacterial burdens, while transgenic mice overexpressing the enzyme show decreased bacterial loads and necrosis. Moreover, Gpx4-deficient macrophages exhibited enhanced necrosis upon Mtb infection in vitro, an outcome suppressed by the lipid peroxidation inhibitor, ferrostatin-1. These findings provide support for the role of ferroptosis in Mtb-induced necrosis and implicate the Gpx4/GSH axis as a target for host-directed therapy of tuberculosis.
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Affiliation(s)
- Eduardo P. Amaral
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
| | - Taylor W. Foreman
- T Lymphocyte Biology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
| | - Sivaranjani Namasivayam
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
| | - Kerry L. Hilligan
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
| | - Keith D. Kauffman
- T Lymphocyte Biology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
| | - Caio Cesar Barbosa Bomfim
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
| | - Diego L. Costa
- Departmento de Bioquímica e Imunologia, Programa de Pós-Graduação em Imunologia Básica e Aplicada, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Beatriz Barreto-Duarte
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research Initiative, Salvador, Brazil
- Curso de Medicina, Universidade Salvador, Laureate Universities, Salvador, Brazil
| | - Clarissa Gurgel-Rocha
- Department of Pathology, School of Medicine of the Federal University of Bahia, Salvador, Bahia, Brazil
- Center for Biotechnology and Cell Therapy, D’Or Institute for Research and Education, Sao Rafael Hospital, Salvador, Bahia, Brazil
| | - Monique Freire Santana
- Departmento de Ensino e Pesquisa, Fundação Centro de Controle de Oncologia do Estado do Amazonas, Manaus, Brazil
- Fundação Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, Brazil
- Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas, Manaus, Brazil
| | - Marcelo Cordeiro-Santos
- Fundação Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, Brazil
- Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas, Manaus, Brazil
- Faculdade de Medicina, Universidade Nilton Lins, Manaus, Brazil
| | - Elsa Du Bruyn
- Wellcome Centre for Infectious Disease Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Catherine Riou
- Wellcome Centre for Infectious Disease Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Kate Aberman
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
| | - Robert John Wilkinson
- Wellcome Centre for Infectious Disease Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- The Francis Crick Institute, London, Northwick Park Hospital, Harrow, UK
- Department of Infectious Disease, Imperial College London, London, UK
| | - Daniel L. Barber
- T Lymphocyte Biology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
| | - Katrin D. Mayer-Barber
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Bruno B. Andrade
- Laboratório de Inflamação e Biomarcadores, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research Initiative, Salvador, Brazil
- Curso de Medicina, Universidade Salvador, Laureate Universities, Salvador, Brazil
- Curso de Medicina, Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
- Faculdade de Medicina, Universidade Federal da Bahia, Salvador, Brazil
- Curso de Medicina, Universidade Faculdade de Tecnologia e Ciências, Salvador, Bahia, Brazil
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Alan Sher
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD
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15
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Matrecitos‐Avila M, Avila R, Pimentel‐Domínguez R, Cuevas S, Tamariz E, Loza‐Alvarez P. Focus variation due to near infrared laser in a confocal microscope. Microsc Res Tech 2022; 85:3431-3438. [PMID: 35819025 PMCID: PMC9796951 DOI: 10.1002/jemt.24198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/24/2022] [Accepted: 06/21/2022] [Indexed: 01/07/2023]
Abstract
Focus precision and stability is crucial in confocal microscopy not only for image sharpness but also to avoid radiometric fluctuations that can wrongly be interpreted as variations of the fluorescence intensity in the sample. Here we report a focus variation provoked by a continuous wave laser of 810-nm wavelength introduced along the optical path of an inverted confocal microscope with an oil immersion ×60 objective. When the laser is turned on or off, the focus position drifts toward lower or high values of the vertical coordinate z, respectively. The maximum drift observed was 2.25 𝜇m for a laser power of 40 mW at the sample and over a 600-s exposure time. The temporal evolution of the focus position is well fitted by exponential curves that mimic temperature variations due to a heat source. Our analysis strongly suggests that the focus drift is due to heating of the immersion oil.
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Affiliation(s)
- Melissa Matrecitos‐Avila
- Centro de Física Aplicada y, Tecnología AvanzadaUniversidad Nacional Autónoma de México (UNAM)QuerétaroMexico
| | - Remy Avila
- Centro de Física Aplicada y, Tecnología AvanzadaUniversidad Nacional Autónoma de México (UNAM)QuerétaroMexico
| | - Reinher Pimentel‐Domínguez
- Centro de Física Aplicada y, Tecnología AvanzadaUniversidad Nacional Autónoma de México (UNAM)QuerétaroMexico
| | - Salvador Cuevas
- Instituto de AstronomíaUniversidad Nacional Autónoma de México (UNAM)CDMXMexico
| | - Elisa Tamariz
- Instituto de Ciencias de la SaludUniversidad VeracruzanaVeracruzMexico
| | - Pablo Loza‐Alvarez
- ICFO‐Institut de Ciencies FotoniquesThe Barcelona Institute of Science and TechnologyBarcelonaSpain
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16
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Oliveira THC, Vanheule V, Vandendriessche S, Poosti F, Teixeira MM, Proost P, Gouwy M, Marques PE. The GAG-Binding Peptide MIG30 Protects against Liver Ischemia-Reperfusion in Mice. Int J Mol Sci 2022; 23:ijms23179715. [PMID: 36077113 PMCID: PMC9456047 DOI: 10.3390/ijms23179715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/18/2022] [Accepted: 08/23/2022] [Indexed: 11/24/2022] Open
Abstract
Ischemia-reperfusion injury (IRI) drives graft rejection and is the main cause of mortality after liver transplantation. During IRI, an intense inflammatory response marked by chemokine production and neutrophil recruitment occurs. However, few strategies are available to restrain this excessive response. Here, we aimed to interfere with chemokine function during IRI in order to disrupt neutrophil recruitment to the injured liver. For this, we utilized a potent glycosaminoglycan (GAG)-binding peptide containing the 30 C-terminal amino acids of CXCL9 (MIG30) that is able to inhibit the binding of chemokines to GAGs in vitro. We observed that mice subjected to IRI and treated with MIG30 presented significantly lower liver injury and dysfunction as compared to vehicle-treated mice. Moreover, the levels of chemokines CXCL1, CXCL2 and CXCL6 and of proinflammatory cytokines TNF-α and IL-6 were significantly reduced in MIG30-treated mice. These events were associated with a marked inhibition of neutrophil recruitment to the liver during IRI. Lastly, we observed that MIG30 is unable to affect leukocytes directly nor to alter the stimulation by either CXCL8 or lipopolysaccharide (LPS), suggesting that its protective properties derive from its ability to inhibit chemokine activity in vivo. We conclude that MIG30 holds promise as a strategy to treat liver IRI and inflammation.
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Affiliation(s)
- Thiago Henrique Caldeira Oliveira
- Immunopharmacology Laboratory, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
- Laboratory of Molecular Immunology, Department of Microbiology, Rega Institute, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Vincent Vanheule
- Laboratory of Molecular Immunology, Department of Microbiology, Rega Institute, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Sofie Vandendriessche
- Laboratory of Molecular Immunology, Department of Microbiology, Rega Institute, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Fariba Poosti
- Laboratory of Molecular Immunology, Department of Microbiology, Rega Institute, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Mauro Martins Teixeira
- Immunopharmacology Laboratory, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology, Rega Institute, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Mieke Gouwy
- Laboratory of Molecular Immunology, Department of Microbiology, Rega Institute, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Pedro Elias Marques
- Laboratory of Molecular Immunology, Department of Microbiology, Rega Institute, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
- Correspondence:
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17
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Progress in Polymeric Micelles for Drug Delivery Applications. Pharmaceutics 2022; 14:pharmaceutics14081636. [PMID: 36015262 PMCID: PMC9412594 DOI: 10.3390/pharmaceutics14081636] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/27/2022] [Accepted: 07/31/2022] [Indexed: 11/17/2022] Open
Abstract
Polymeric micelles (PMs) have made significant progress in drug delivery applications. A robust core-shell structure, kinetic stability and the inherent ability to solubilize hydrophobic drugs are the highlights of PMs. This review presents the recent advances and understandings of PMs with a focus on the latest drug delivery applications. The types, methods of preparation and characterization of PMs are described along with their applications in oral, parenteral, transdermal, intranasal and other drug delivery systems. The applications of PMs for tumor-targeted delivery have been provided special attention. The safety, quality and stability of PMs in relation to drug delivery are also provided. In addition, advanced polymeric systems and special PMs are also reviewed. The in vitro and in vivo stability assessment of PMs and recent understandings in this area are provided. The patented PMs and clinical trials on PMs for drug delivery applications are considered indicators of their tremendous future applications. Overall, PMs can help overcome many unresolved issues in drug delivery.
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18
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Lopes ME, Nakagaki BN, Mattos MS, Campolina-Silva GH, Meira RDO, Paixão P, Oliveira A, Faustino L, Gonçalves R, Menezes GB. Susceptibility to Infections During Acute Liver Injury Depends on Transient Disruption of Liver Macrophage Niche. Front Immunol 2022; 13:892114. [PMID: 35967353 PMCID: PMC9368782 DOI: 10.3389/fimmu.2022.892114] [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: 03/08/2022] [Accepted: 06/20/2022] [Indexed: 11/25/2022] Open
Abstract
Kupffer cells are the primary liver resident immune cell responsible for the liver firewall function, including clearance of bacterial infection from the circulation, as they are strategically positioned inside the liver sinusoid with intimate contact with the blood. Disruption in the tissue-resident macrophage niche, such as in Kupffer cells, can lead to a window of susceptibility to systemic infections, which represents a significant cause of mortality in patients with acetaminophen (APAP) overdose-induced acute liver injury (ALI). However, how Kupffer cell niche disruption increases susceptibility to systemic infections in ALI is not fully understood. Using a mouse model of ALI induced by APAP overdose, we found that Kupffer cells upregulated the apoptotic cell death program and were markedly reduced in the necrotic areas during the early stages of ALI, opening the niche for the infiltration of neutrophils and monocyte subsets. In addition, during the resolution phase of ALI, the remaining tissue macrophages with a Kupffer cell morphology were observed forming replicating cell clusters closer to necrotic areas devoid of Kupffer cells. Interestingly, mice with APAP-induced liver injury were still susceptible to infections despite the dual cellular input of circulating monocytes and proliferation of remaining Kupffer cells in the damaged liver. Therapy with bone marrow-derived macrophages (BMDM) was shown to be effective in occupying the niche devoid of Kupffer cells following APAP-induced ALI. The rapid BMDM migration to the liver and their positioning within necrotic areas enhanced the healing of the tissue and restored the liver firewall function after BMDM therapy. Therefore, we showed that disruption in the Kupffer cell niche and its impaired function during acute liver injury are key factors for the susceptibility to systemic bacterial infections. In addition, modulation of the liver macrophage niche was shown to be a promising therapeutic strategy for liver injuries that reduce the Kupffer cell number and compromise the organ function.
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Affiliation(s)
- Mateus Eustáquio Lopes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
- *Correspondence: Mateus Eustáquio Lopes, ; Gustavo Batista Menezes,
| | - Brenda Naemi Nakagaki
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Matheus Silvério Mattos
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Gabriel Henrique Campolina-Silva
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Université Laval, Québec, QC, Canada
| | - Raquel de Oliveira Meira
- Macrophage and Monocyte Biology Laboratory, Department of Pathology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Pierre Henrique de Menezes Paixão
- Macrophage and Monocyte Biology Laboratory, Department of Pathology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - André Gustavo Oliveira
- Department of Physiology and Biophysics, Instituto de Ciências Biológicas, Universidade
Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Lucas D. Faustino
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Ricardo Gonçalves
- Macrophage and Monocyte Biology Laboratory, Department of Pathology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
- *Correspondence: Mateus Eustáquio Lopes, ; Gustavo Batista Menezes,
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19
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Wang Y, Wang J. Intravital Imaging of Inflammatory Response in Liver Disease. Front Cell Dev Biol 2022; 10:922041. [PMID: 35837329 PMCID: PMC9274191 DOI: 10.3389/fcell.2022.922041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 05/16/2022] [Indexed: 11/17/2022] Open
Abstract
The healthy liver requires a strictly controlled crosstalk between immune and nonimmune cells to maintain its function and homeostasis. A well-conditioned immune system can effectively recognize and clear noxious stimuli by a self-limited, small-scale inflammatory response. This regulated inflammatory process enables the liver to cope with daily microbial exposure and metabolic stress, which is beneficial for hepatic self-renewal and tissue remodeling. However, the failure to clear noxious stimuli or dysregulation of immune response can lead to uncontrolled liver inflammation, liver dysfunction, and severe liver disease. Numerous highly dynamic circulating immune cells and sessile resident immune and parenchymal cells interact and communicate with each other in an incredibly complex way to regulate the inflammatory response in both healthy and diseased liver. Intravital imaging is a powerful tool to visualize individual cells in vivo and has been widely used for dissecting the behavior and interactions between various cell types in the complex architecture of the liver. Here, we summarize some new findings obtained with the use of intravital imaging, which enhances our understanding of the complexity of immune cell behavior, cell–cell interaction, and spatial organization during the physiological and pathological liver inflammatory response.
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20
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Oncocalyxone A (oncoA) has intrinsic fluorescence? Photodiagnosis Photodyn Ther 2022; 39:102869. [DOI: 10.1016/j.pdpdt.2022.102869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/06/2022] [Accepted: 04/13/2022] [Indexed: 11/19/2022]
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21
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An CZ, Li CQ, Song LB, He YF, Chen W, Liu B, Zhao YD. A simple fluorescent strategy for liver capillary labeling with carbon quantum dot-lectin nanoprobe. Analyst 2022; 147:1952-1960. [DOI: 10.1039/d1an02364k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on lycopersicon esculentum lectin that can target vascular endothelial cells and carbon quantum dots, we designed a carbon-based probe for the fluorescence labeling and imaging of hepatic blood vessels of liver tissue sections.
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Affiliation(s)
- Chang-Zhi An
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics & Molecular Imaging Key Laboratory, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
| | - Chao-Qing Li
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics & Molecular Imaging Key Laboratory, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
| | - Lai-Bo Song
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics & Molecular Imaging Key Laboratory, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
| | - Yan-Fei He
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics & Molecular Imaging Key Laboratory, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
| | - Wei Chen
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics & Molecular Imaging Key Laboratory, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
| | - Bo Liu
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics & Molecular Imaging Key Laboratory, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
| | - Yuan-Di Zhao
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics & Molecular Imaging Key Laboratory, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
- Key Laboratory of Biomedical Photonics (HUST), Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
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22
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Marques PE, Vandendriessche S, de Oliveira THC, Crijns H, Lopes ME, Blanter M, Schuermans S, Yu K, Poosti F, Vanheule V, Janssens R, Boff D, Kungl AJ, Menezes GB, Teixeira MM, Proost P. Inhibition of Drug-Induced Liver Injury in Mice Using a Positively Charged Peptide That Binds DNA. Hepatol Commun 2021; 5:1737-1754. [PMID: 34532999 PMCID: PMC8485890 DOI: 10.1002/hep4.1759] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 04/30/2021] [Accepted: 05/11/2021] [Indexed: 12/19/2022] Open
Abstract
Hepatic cell death occurs in response to diverse stimuli such as chemical and physical damage. The exposure of intracellular contents such as DNA during necrosis induces a severe inflammatory response that has yet to be fully explored therapeutically. Here, we sought means to neutralize the ability of extracellular DNA to induce deleterious tissue inflammation when drug-induced liver injury had already ensued. DNA exposure and inflammation were investigated in vivo in drug-induced liver injury using intravital microscopy. The necrotic DNA debris was studied in murine livers in vivo and in DNA debris models in vitro by using a positively charged chemokine-derived peptide (MIG30; CXCL9[74-103]). Acetaminophen-induced liver necrosis was associated with massive DNA accumulation, production of CXC chemokines, and neutrophil activation inside the injured tissue. The MIG30 peptide bound the healthy liver vasculature and, to a much greater extent, to DNA-rich necrotic tissue. Moreover, MIG30 bound extracellular DNA directly in vivo in a charge-dependent manner and independently of glycosaminoglycans and chemokines. Post-treatment of mice with MIG30 reduced mortality, liver damage, and inflammation significantly. These effects were not observed with a control peptide that does not bind DNA. Mechanistically, MIG30 inhibited the interaction between DNA and histones, and promoted the dissociation of histones from necrotic debris. MIG30 also inhibited the pro-inflammatory effect of CpG DNA, as measured by a reduction in CXCL8 production, indicating that MIG30 disturbs the ability of DNA to induce hepatic inflammation. Conclusion: The use of DNA-binding peptides reduces necrotic liver injury and inflammation, even at late timepoints.
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Affiliation(s)
- Pedro E Marques
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium.,Immunopharmacology LaboratoryDepartment of Biochemistry and ImmunologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Sofie Vandendriessche
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Thiago H C de Oliveira
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium.,Immunopharmacology LaboratoryDepartment of Biochemistry and ImmunologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Helena Crijns
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Mateus E Lopes
- Center for Gastrointestinal BiologyDepartment of MorphologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Marfa Blanter
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Sara Schuermans
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Karen Yu
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Fariba Poosti
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Vincent Vanheule
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Rik Janssens
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Daiane Boff
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium.,Immunopharmacology LaboratoryDepartment of Biochemistry and ImmunologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Andreas J Kungl
- Department of Pharmaceutical ChemistryInstitute of Pharmaceutical SciencesKarl-Franzens UniversitätGrazAustria
| | - Gustavo B Menezes
- Center for Gastrointestinal BiologyDepartment of MorphologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Mauro M Teixeira
- Immunopharmacology LaboratoryDepartment of Biochemistry and ImmunologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Paul Proost
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
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23
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Shan Z, Li L, Atkins CL, Wang M, Wen Y, Jeong J, Moreno NF, Feng D, Gui X, Zhang N, Lee CG, Elias JA, Lee WM, Gao B, Lam FW, An Z, Ju C. Chitinase 3-like-1 contributes to acetaminophen-induced liver injury by promoting hepatic platelet recruitment. eLife 2021; 10:e68571. [PMID: 34110284 PMCID: PMC8233036 DOI: 10.7554/elife.68571] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/02/2021] [Indexed: 01/04/2023] Open
Abstract
Background Hepatic platelet accumulation contributes to acetaminophen (APAP)-induced liver injury (AILI). However, little is known about the molecular pathways involved in platelet recruitment to the liver and whether targeting such pathways could attenuate AILI. Methods Mice were fasted overnight before intraperitoneally (i.p.) injected with APAP at a dose of 210 mg/kg for male mice and 325 mg/kg for female mice. Platelets adherent to Kupffer cells were determined in both mice and patients overdosed with APAP. The impact of α-chitinase 3-like-1 (α-Chi3l1) on alleviation of AILI was determined in a therapeutic setting, and liver injury was analyzed. Results The present study unveiled a critical role of Chi3l1 in hepatic platelet recruitment during AILI. Increased Chi3l1 and platelets in the liver were observed in patients and mice overdosed with APAP. Compared to wild-type (WT) mice, Chil1-/- mice developed attenuated AILI with markedly reduced hepatic platelet accumulation. Mechanistic studies revealed that Chi3l1 signaled through CD44 on macrophages to induce podoplanin expression, which mediated platelet recruitment through C-type lectin-like receptor 2. Moreover, APAP treatment of Cd44-/- mice resulted in much lower numbers of hepatic platelets and liver injury than WT mice, a phenotype similar to that in Chil1-/- mice. Recombinant Chi3l1 could restore hepatic platelet accumulation and AILI in Chil1-/- mice, but not in Cd44-/- mice. Importantly, we generated anti-Chi3l1 monoclonal antibodies and demonstrated that they could effectively inhibit hepatic platelet accumulation and AILI. Conclusions We uncovered the Chi3l1/CD44 axis as a critical pathway mediating APAP-induced hepatic platelet recruitment and tissue injury. We demonstrated the feasibility and potential of targeting Chi3l1 to treat AILI. Funding ZS received funding from NSFC (32071129). FWL received funding from NIH (GM123261). ALFSG received funding from NIDDK (DK 058369). ZA received funding from CPRIT (RP150551 and RP190561) and the Welch Foundation (AU-0042-20030616). CJ received funding from NIH (DK122708, DK109574, DK121330, and DK122796) and support from a University of Texas System Translational STARs award. Portions of this work were supported with resources and the use of facilities of the Michael E. DeBakey VA Medical Center and funding from Department of Veterans Affairs I01 BX002551 (Equipment, Personnel, Supplies). The contents do not represent the views of the US Department of Veterans Affairs or the US Government.
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Affiliation(s)
- Zhao Shan
- Department of Anesthesiology, UTHealth McGovern Medical SchoolHoustonUnited States
- Center for Life Sciences, School of Life Sciences, Yunnan UniversityKunmingChina
| | - Leike Li
- Texas Therapeutics Institute, UTHealth McGovern Medical SchoolHoustonUnited States
| | | | - Meng Wang
- Department of Anesthesiology, UTHealth McGovern Medical SchoolHoustonUnited States
| | - Yankai Wen
- Department of Anesthesiology, UTHealth McGovern Medical SchoolHoustonUnited States
| | - Jongmin Jeong
- Department of Anesthesiology, UTHealth McGovern Medical SchoolHoustonUnited States
| | - Nicolas F Moreno
- Department of Anesthesiology, UTHealth McGovern Medical SchoolHoustonUnited States
| | - Dechun Feng
- Laboratory of Liver Disease, National Institute on Alcohol Abuse and Alcoholism, NIHBethesdaUnited States
| | - Xun Gui
- Texas Therapeutics Institute, UTHealth McGovern Medical SchoolHoustonUnited States
| | - Ningyan Zhang
- Texas Therapeutics Institute, UTHealth McGovern Medical SchoolHoustonUnited States
| | - Chun Geun Lee
- Molecular Microbiology and Immunology, Brown UniversityProvidenceUnited States
| | - Jack A Elias
- Molecular Microbiology and Immunology, Brown UniversityProvidenceUnited States
- Division of Medicine and Biological Sciences, Warren Alpert School of Medicine, Brown UniversityProvidenceUnited States
| | - William M Lee
- Division of Digestive and Liver Diseases, Department of Internal Medicine, University of Texas Southwestern Med SchoolDallasUnited States
| | - Bin Gao
- Laboratory of Liver Disease, National Institute on Alcohol Abuse and Alcoholism, NIHBethesdaUnited States
| | - Fong Wilson Lam
- Division of Pediatric Critical Care Medicine, Baylor College of MedicineHoustonUnited States
- Center for Translation Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical CenterHoustonUnited States
| | - Zhiqiang An
- Texas Therapeutics Institute, UTHealth McGovern Medical SchoolHoustonUnited States
| | - Cynthia Ju
- Department of Anesthesiology, UTHealth McGovern Medical SchoolHoustonUnited States
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Vaghela R, Arkudas A, Horch RE, Hessenauer M. Actually Seeing What Is Going on - Intravital Microscopy in Tissue Engineering. Front Bioeng Biotechnol 2021; 9:627462. [PMID: 33681162 PMCID: PMC7925911 DOI: 10.3389/fbioe.2021.627462] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/26/2021] [Indexed: 12/21/2022] Open
Abstract
Intravital microscopy (IVM) study approach offers several advantages over in vitro, ex vivo, and 3D models. IVM provides real-time imaging of cellular events, which provides us a comprehensive picture of dynamic processes. Rapid improvement in microscopy techniques has permitted deep tissue imaging at a higher resolution. Advances in fluorescence tagging methods enable tracking of specific cell types. Moreover, IVM can serve as an important tool to study different stages of tissue regeneration processes. Furthermore, the compatibility of different tissue engineered constructs can be analyzed. IVM is also a promising approach to investigate host reactions on implanted biomaterials. IVM can provide instant feedback for improvising tissue engineering strategies. In this review, we aim to provide an overview of the requirements and applications of different IVM approaches. First, we will discuss the history of IVM development, and then we will provide an overview of available optical modalities including the pros and cons. Later, we will summarize different fluorescence labeling methods. In the final section, we will discuss well-established chronic and acute IVM models for different organs.
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Affiliation(s)
- Ravikumar Vaghela
- Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Andreas Arkudas
- Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Raymund E Horch
- Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Maximilian Hessenauer
- Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
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do Valle IB, Prazeres PHDM, Mesquita RA, Silva TA, de Castro Oliveira HM, Castro PR, Freitas IDP, Oliveira SR, Gomes NA, de Oliveira RF, Marquiore LF, Macari S, do Amaral FA, Jácome-Santos H, Barcelos LS, Menezes GB, Marques MM, Birbrair A, Diniz IMA. Photobiomodulation drives pericyte mobilization towards skin regeneration. Sci Rep 2020; 10:19257. [PMID: 33159113 PMCID: PMC7648092 DOI: 10.1038/s41598-020-76243-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 10/26/2020] [Indexed: 12/11/2022] Open
Abstract
Photobiomodulation is being widely applied for improving dermal or mucosal wound healing. However, the underlying cellular and molecular processes that directly contribute to its effects remain poorly understood. Pericytes are relevant cells involved in the wound microenvironment and could be one of the main targets of photobiomodulation due to their plasticity and perivascular localization. Herein, we investigate tissue repair under the photobiomodulation stimulus using a pericyte labeled (or reporter) transgenic mice. Using a model of two contralateral back wounds, one the control and the other photoactivated daily (660 nm, 20 mW, 0.71 W/cm2, 5 J/cm2, 7 s, 0.14 J), we showed an overall influx of immune and undifferentiated cells and higher mobilization of a potent pericyte subpopulation (Type-2 pericytes) in the photoactivated wounds in comparison to the controls. Doppler analysis showed a significant increase in the blood flow in the photoactivated wounds, while marked vascular supply was observed histologically. Histochemical analysis has indicated more advanced stages of tissue repair after photoactivation. These data suggest that photobiomodulation significantly accelerates tissue repair through its vascular effects with direct recruitment of pericytes to the injury site.
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Affiliation(s)
- Isabella Bittencourt do Valle
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31.270-901, Brazil
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Ricardo Alves Mesquita
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Tarcília Aparecida Silva
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Pollyana Ribeiro Castro
- Department of Physiology and Biophysics, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Iuri Dornelas Prates Freitas
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31.270-901, Brazil
- School of Dentistry, Faculdade Sete Lagoas, Sete Lagoas, Minas Gerais, Brazil
| | - Sicília Rezende Oliveira
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Natália Aparecida Gomes
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31.270-901, Brazil
| | - Rafaela Férrer de Oliveira
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31.270-901, Brazil
| | - Larissa Fassarela Marquiore
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31.270-901, Brazil
| | - Soraia Macari
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31.270-901, Brazil
| | - Flávio Almeida do Amaral
- Department of Biochemistry and Immunology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Humberto Jácome-Santos
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31.270-901, Brazil
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lucíola Silva Barcelos
- Department of Physiology and Biophysics, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gustavo Batista Menezes
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Alexander Birbrair
- Departament of Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ivana Márcia Alves Diniz
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31.270-901, Brazil.
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DeTemple DE, Cammann S, Bahlmann J, Buettner M, Heisterkamp A, Vondran FWR, Kalies SK. Longitudinal imaging and femtosecond laser manipulation of the liver: How to generate and trace single-cell-resolved micro-damage in vivo. PLoS One 2020; 15:e0240405. [PMID: 33057345 PMCID: PMC7561146 DOI: 10.1371/journal.pone.0240405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 09/26/2020] [Indexed: 12/24/2022] Open
Abstract
The liver is known to possess extensive regenerative capabilities, the processes and pathways of which are not fully understood. A necessary step towards a better understanding involves the analysis of regeneration on the microscopic level in the in vivo environment. We developed an evaluation method combining longitudinal imaging analysis in vivo with simultaneous manipulation on single cell level. An abdominal imaging window was implanted in vivo in Balb/C mice for recurrent imaging after implantation. Intravenous injection of Fluorescein Isothiocyanate (FITC)-Dextran was used for labelling of vessels and Rhodamine 6G for hepatocytes. Minimal cell injury was induced via ablation with a femtosecond laser system during simultaneous visualisation of targeted cells using multiphoton microscopy. High-resolution imaging in vivo on single cell level including re-localisation of ablated regions in follow-up measurements after 2-7 days was feasible. Targeted single cell manipulation using femtosecond laser pulses at peak intensities of 3-6.6 μJ led to enhancement of FITC-Dextran in the surrounding tissue. These reactions reached their maxima 5-15 minutes after ablation and were no longer detectable after 24 hours. The procedures were well tolerated by all animals. Multiphoton microscopy in vivo, combined with a femtosecond laser system for single cell manipulation provides a refined procedure for longitudinal evaluation of liver micro-regeneration in the same region of interest. Immediate reactions after cell ablation and tissue regeneration can be analysed.
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Affiliation(s)
- Daphne E. DeTemple
- Department for General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
- * E-mail:
| | - Sebastian Cammann
- Department for General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Julia Bahlmann
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
- Deutsches Zentrum für Lungenforschung e.V. (DZL), Gießen, Germany
| | - Manuela Buettner
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Alexander Heisterkamp
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
- Deutsches Zentrum für Lungenforschung e.V. (DZL), Gießen, Germany
| | - Florian W. R. Vondran
- Department for General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
- German Centre for Infection Research (DZIF), partner site Hannover-Braunschweig, Hannover, Germany
| | - Stefan K. Kalies
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
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Lam FW, Brown CA, Valladolid C, Emebo DC, Palzkill TG, Cruz MA. The vimentin rod domain blocks P-selectin-P-selectin glycoprotein ligand 1 interactions to attenuate leukocyte adhesion to inflamed endothelium. PLoS One 2020; 15:e0240164. [PMID: 33048962 PMCID: PMC7553327 DOI: 10.1371/journal.pone.0240164] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 09/21/2020] [Indexed: 01/30/2023] Open
Abstract
Acute inflammation begins with leukocyte P-selectin glycoprotein ligand-1 (PSGL-1) binding to P-selectin on inflamed endothelium and platelets. In pathologic conditions, this process may contribute to secondary organ damage, like sepsis-induced liver injury. Therefore, developing novel therapies to attenuate inflammation may be beneficial. We previously reported that recombinant human vimentin (rhVim) binds P-selectin to block leukocyte adhesion to endothelium and platelets. In this study, we used SPOT-peptide arrays to identify the rod domain as the active region within rhVim that interacts with P-selectin. Indeed, recombinant human rod domain of vimentin (rhRod) binds to P-selectin with high affinity, with in silico modeling suggesting that rhRod binds P-selectin at or near the PSGL-1 binding site. Using bio-layer interferometry, rhRod decreases PSGL-1 binding to immobilized P-selectin, corroborating the in silico data. Under parallel-plate flow, rhRod blocks leukocyte adhesion to fibrin(ogen)-captured platelets, P-selectin/Fc-coated channels, and IL-1β/IL-4-co-stimulated human umbilical vein endothelial cells. Finally, using intravital microscopy in endotoxemic C57Bl/6 mice, rhRod co-localizes with P-selectin in the hepatic sinusoids and decreases neutrophil adhesion to hepatic sinusoids. These data suggest a potential role for rhRod in attenuating inflammation through directly blocking P-selectin-PSGL-1 interactions.
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Affiliation(s)
- Fong Wilson Lam
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
- Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, United States of America
| | - Cameron August Brown
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Christian Valladolid
- Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, United States of America
- Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Dabel Cynthia Emebo
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
- Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, United States of America
| | - Timothy Gerald Palzkill
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas, United States of America
| | - Miguel Angel Cruz
- Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, United States of America
- Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
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Charlie-Silva I, Feitosa NM, Gomes JMM, Hoyos DCDM, Mattioli CC, Eto SF, Fernandes DC, Belo MADA, Silva JDO, de Barros ALB, Corrêa Junior JD, de Menezes GB, Fukushima HCS, Castro TFD, Borra RC, Pierezan F, de Melo NFS, Fraceto LF. Potential of mucoadhesive nanocapsules in drug release and toxicology in zebrafish. PLoS One 2020; 15:e0238823. [PMID: 32970684 PMCID: PMC7514080 DOI: 10.1371/journal.pone.0238823] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 08/24/2020] [Indexed: 11/18/2022] Open
Abstract
Mucoadhesive polymeric nanocapsules have attracted interest of researchers from different fields from natural sciences because of their ability to interact with the mucosa and increase drug permeation. Anesthesia by immersion causes absorption through the skin and gills of fish, so it is important to evaluate the exposure of these organs to drug nanosystems. Benzocaine (BENZ) is one of the most popular anesthetic agents used in fish anesthesia, but it has drawbacks because of its low bioavailability, resulting in weak absorption after immersion. Here we describe method developed for preparing and characterizing chitosan-coated PLGA mucoadhesive nanoparticles containing BENZ (NPMAs) for zebrafish immersion anesthesia. We determined the lowest effective concentration, characterized the interaction of the mucoadhesive system with fish, measured the anesthetic efficacy, and evaluated possible toxic effects in embryos and adults exposed to the nanoformulations. This study opens perspectives for using nanoformulations prepared with BENZ in aquaculture, allowing reduction of dosage as well as promoting more effective anesthesia and improved interaction with the mucoadhesive system of fish.
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Affiliation(s)
- Ives Charlie-Silva
- Department of Pharmacology at University of São Paulo-ICB/USP, São Paulo-SP, Brazil
| | - Natália Martins Feitosa
- Laboratório Integrado de Biociências Translacionais (LIBT), Instituto de Biodiversidade e Sustentabilidade (NUPEM), Universidade Federal do Rio de Janeiro (UFRJ)- Macaé, RJ, Brazil
| | | | | | | | - Silas Fernandes Eto
- Department of Postgraduate in Health Sciences—PROCISA, Federal University of Roraima (UFRR), Boa Vista, Brazil
| | | | - Marco Antonio de Andrade Belo
- Department of Preventive Veterinary Medicine, São Paulo State University, Jaboticabal-SP, Brazil
- Laboratory of Animal Pharmacology and Toxicology, Brasil University, Descalvado/SP, Brazil
| | - Juliana de Oliveira Silva
- Department of Clinical and Toxicological Analyses, Faculty of Pharmacy-UFMG, Belo Horizonte-MG, Brazil
| | | | | | | | | | | | - Ricardo Carneiro Borra
- Laboratory of Applied Immunology, Federal University of São Carlos, São Carlos-SP, Brazil
| | - Felipe Pierezan
- School of Veterinary Medicine, Department of Clinic and Veterinary Surgery, UFMG, Belo Horizonte-MG, Brazil
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Diniz AB, Antunes MM, Lacerda VADS, Nakagaki BN, Freitas Lopes MA, Castro-Oliveira HMD, Mattos MS, Mafra K, de Miranda CDM, de Oliveira Costa KM, Lopes ME, Alvarenga DM, Carvalho-Gontijo R, Marchesi SC, Lacerda DR, de Araújo AM, de Carvalho É, David BA, Santos MM, Lima CX, Silva Gomes JA, Minto Fontes Cal TC, de Souza BR, Couto CA, Faria LC, Teixeira Vidigal PV, Matos Ferreira AV, Radhakrishnnan S, Ricci M, Oliveira AG, Rezende RM, Menezes GB. Imaging and immunometabolic phenotyping uncover changes in the hepatic immune response in the early phases of NAFLD. JHEP Rep 2020; 2:100117. [PMID: 32695965 PMCID: PMC7365949 DOI: 10.1016/j.jhepr.2020.100117] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/02/2020] [Accepted: 03/26/2020] [Indexed: 12/25/2022] Open
Abstract
Background & Aims The precise determination of non-alcoholic fatty liver disease (NAFLD) onset is challenging. Thus, the initial hepatic responses to fat accumulation, which may be fundamental to our understanding of NAFLD evolution and clinical outcomes, are largely unknown. Herein, we chronologically mapped the immunologic and metabolic changes in the liver during the early stages of fatty liver disease in mice and compared this with human NAFLD samples. Methods Liver biopsies from patients with NAFLD (NAFLD activity score [NAS] 2–3) were collected for gene expression profiling. Mice received a high-fat diet for short periods to mimic initial steatosis and the hepatic immune response was investigated using a combination of confocal intravital imaging, gene expression, cell isolation, flow cytometry and bone marrow transplantation assays. Results We observed major immunologic changes in patients with NAS 2–3 and in mice in the initial stages of NAFLD. In mice, these changes significantly increased mortality rates upon drug-induced liver injury, as well as predisposing mice to bacterial infections. Moreover, deletion of Toll-like receptor 4 in liver cells dampened tolerogenesis, particularly in Kupffer cells, in the initial stages of dietary insult. Conclusion The hepatic immune system acts as a sentinel for early and minor changes in hepatic lipid content, mounting a biphasic response upon dietary insult. Priming of liver immune cells by gut-derived Toll-like receptor 4 ligands plays an important role in liver tolerance in initial phases, but continuous exposure to insults may lead to damage and reduced ability to control infections. Lay summary Fatty liver is a very common form of hepatic disease, leading to millions of cases of cirrhosis every year. Patients are often asymptomatic until becoming very sick. Therefore, it is important that we expand our knowledge of the early stages of disease pathogenesis, to enable early diagnosis. Herein, we show that even in the early stages of fatty liver disease, there are significant alterations in genes involved in the inflammatory response, suggesting that the hepatic immune system is disturbed even following minor and undetectable changes in liver fat content. This could have implications for the diagnosis and clinical management of fatty liver disease. Hepatic immune response is already altered in liver biopsies from patients with mild NAFLD. We designed a novel mouse model to mimic mild NAFLD, enabling the chronological mapping of liver changes. This revealed an increased mortality rate upon secondary liver damage and a window of increased susceptibility to infection. NAFLD diagnosis may be significantly improved by a more profound investigation of changes in hepatic immunology. These data could guide customized nutritional and therapeutic interventions at different stages of NAFLD.
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Key Words
- ALT, alanine aminotransferase
- APAP, acetaminophen
- CFUs, colony forming units
- DCs, dendritic cells
- E. coli, Escherichia coli
- HFD, high-fat diet
- ITT, insulin tolerance test
- KCs, Kupffer cells
- NAFLD
- NAFLD, non-alcoholic fatty liver disease
- NAS, NAFLD activity score
- NPCs, non-parenchymal cells
- SD, standard diet
- TLR4, Toll-like receptor 4
- WT, wild-type
- diet
- immune system
- immunity
- in vivo imaging
- liver
- metabolism
- steatosis
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Affiliation(s)
- Ariane Barros Diniz
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Maísa Mota Antunes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Viviane Aparecida de Souza Lacerda
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Brenda Naemi Nakagaki
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Maria Alice Freitas Lopes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Hortência Maciel de Castro-Oliveira
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Matheus Silvério Mattos
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Kassiana Mafra
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Camila Dutra Moreira de Miranda
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Karen Marques de Oliveira Costa
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Mateus Eustáquio Lopes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Débora Moreira Alvarenga
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | | | - Sarah Cozzer Marchesi
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | | | - Alan Moreira de Araújo
- Department of Pharmacodynamics, University of Florida, College of Pharmacy, Gainesville, FL, USA
| | - Érika de Carvalho
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | | | - Mônica Morais Santos
- Laboratório de Morfologia, Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Cristiano Xavier Lima
- Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | | | | | - Bruna Roque de Souza
- Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Cláudia Alves Couto
- Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Luciana Costa Faria
- Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | | | | | | | | | | | - Rafael Machado Rezende
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
- Corresponding author. Address: Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627 - Belo Horizonte, Minas Gerais, 31270-901, Brazil. Tel./fax: +5531 3409 3015.
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Chronic ingestion of Primex-Z, compared with other common fat sources, drives worse liver injury and enhanced susceptibility to bacterial infections. Nutrition 2020; 81:110938. [PMID: 32739658 DOI: 10.1016/j.nut.2020.110938] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVES The aim of this study was to investigate putative different outcomes on the development of non-alcoholic fatty liver disease in mice using fat options regularly used in human nutrition. METHODS Male C57BL/6 mice were fed a control diet, and four different high-fat diets (HFD: 40% calories from fat; Research Diet, Inc., New Brunswick, New Jersey, USA) for 16 and 30 wk. HFDs had different common fat sources, including trans-fat, non-trans-fat palm oil (Primex-Z), palm oil alone, and corn oil alone. Mice were sacrificed and samples were collected for analysis. RESULTS Using an unprecedented combination of in vivo imaging with immunometabolic phenotyping, we revealed that a HFD induced a major increase in hepatic lipid droplet deposition compared with control mice, being significantly higher in Primex-Z-fed mice. All HFD mice had similar or less weight gain as control mice; however, Primex-Z ingestion led to a higher increase in adiposity index (~90% increase) compared with other fat sources. Gene expression of isolated liver immune cells revealed large changes in expression of several inflammatory pathways, which were also more elevated in Primex-Z-fed mice, including Tnf (~20-fold), Il1b (~60-fold), and Tgfb (2.5-fold). Immunophenotyping and in vivo analysis showed that the frequency of hepatic immune cells was also disturbed during different HFD contents, rendering not only Kupffer cell depletion, but also reduced bacterial arresting ability. CONCLUSION Different fat dietary sources imprint different immune and metabolic effects in the liver during consumption of an HFD. The present data highlighted that Primex-Z-a novel non-trans-fat-is not only able to damage hepatocytes, but also to impair liver ability to clear blood-borne infections.
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Mattos MS, Lopes ME, de Araujo AM, Alvarenga DM, Nakagaki BN, Mafra K, de Miranda CDM, Diniz AB, Antunes MM, Lopes MAF, Rezende RM, Menezes GB. Prolonged neutrophil survival at necrotic sites is a fundamental feature for tissue recovery and resolution of hepatic inflammation. J Leukoc Biol 2020; 108:1199-1213. [PMID: 32422690 DOI: 10.1002/jlb.1ma0420-634r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/13/2020] [Accepted: 04/17/2020] [Indexed: 12/27/2022] Open
Abstract
Neutrophils were classically described as powerful effectors of acute inflammation, and their main purpose was assumed to be restricted to pathogen killing through production of oxidants. As consequence, neutrophils also may lead to significant collateral damage to the healthy tissues, and after performing these tasks, these leukocytes are supposed to die within tissues. However, there is a growing body of evidence showing that neutrophils also play a pivotal role in the resolution phases of inflammation, because they can modulate tissue environment due to secretion of different kind of cytokines. Drug-induced liver injury (DILI) is a worldwide concern being one of the most prevalent causes of liver transplantation, and is well established that there is an intense neutrophil recruitment into necrotic liver during DILI. However, information if such abundant granulocyte infiltration is also linked to the tissue repairing phase of hepatic injury is still largely elusive. Here, we investigated the dynamics of neutrophil trafficking within blood, bone marrow, and liver during hepatic inflammation, and how changes in their gene expression profile could drive the resolution events during acetaminophen (APAP)-induced liver injury. We found that neutrophils remained viable during longer periods following liver damage, because they avidly patrolled necrotic areas and up-regulated pro-resolutive genes, including Tgfb, Il1r2, and Fpr2. Adoptive transference of "resolutive neutrophils" harvested from livers at 72 h after injury to mice at the initial phases of injury (6 h after APAP) significantly rescued organ injury. Thus, we provide novel insights on the role of neutrophils not only in the injury amplification, but also in the resolution phases of inflammation.
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Affiliation(s)
- Matheus Silvério Mattos
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mateus Eustáquio Lopes
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Alan Moreira de Araujo
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Débora Moreira Alvarenga
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Brenda Naemi Nakagaki
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Kassiana Mafra
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Camila Dutra Moreira de Miranda
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ariane Barros Diniz
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maísa Mota Antunes
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maria Alice Freitas Lopes
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Rafael Machado Rezende
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Morphology Department, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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33
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Teijeira Á, Garasa S, Gato M, Alfaro C, Migueliz I, Cirella A, de Andrea C, Ochoa MC, Otano I, Etxeberria I, Andueza MP, Nieto CP, Resano L, Azpilikueta A, Allegretti M, de Pizzol M, Ponz-Sarvisé M, Rouzaut A, Sanmamed MF, Schalper K, Carleton M, Mellado M, Rodriguez-Ruiz ME, Berraondo P, Perez-Gracia JL, Melero I. CXCR1 and CXCR2 Chemokine Receptor Agonists Produced by Tumors Induce Neutrophil Extracellular Traps that Interfere with Immune Cytotoxicity. Immunity 2020; 52:856-871.e8. [PMID: 32289253 DOI: 10.1016/j.immuni.2020.03.001] [Citation(s) in RCA: 388] [Impact Index Per Article: 97.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 12/14/2019] [Accepted: 03/04/2020] [Indexed: 02/06/2023]
Abstract
Neutrophils are expanded and abundant in cancer-bearing hosts. Under the influence of CXCR1 and CXCR2 chemokine receptor agonists and other chemotactic factors produced by tumors, neutrophils, and granulocytic myeloid-derived suppressor cells (MDSCs) from cancer patients extrude their neutrophil extracellular traps (NETs). In our hands, CXCR1 and CXCR2 agonists proved to be the major mediators of cancer-promoted NETosis. NETs wrap and coat tumor cells and shield them from cytotoxicity, as mediated by CD8+ T cells and natural killer (NK) cells, by obstructing contact between immune cells and the surrounding target cells. Tumor cells protected from cytotoxicity by NETs underlie successful cancer metastases in mice and the immunotherapeutic synergy of protein arginine deiminase 4 (PAD4) inhibitors, which curtail NETosis with immune checkpoint inhibitors. Intravital microscopy provides evidence of neutrophil NETs interfering cytolytic cytotoxic T lymphocytes (CTLs) and NK cell contacts with tumor cells.
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Affiliation(s)
- Álvaro Teijeira
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain.
| | - Saray Garasa
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain
| | - María Gato
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain
| | - Carlos Alfaro
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Itziar Migueliz
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain
| | - Assunta Cirella
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain
| | - Carlos de Andrea
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain; Department of Oncology, Clinica Universidad de Navarra, 31008 Pamplona, Spain
| | - Maria Carmen Ochoa
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain
| | - Itziar Otano
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain
| | - Iñaki Etxeberria
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain
| | - Maria Pilar Andueza
- Department of Oncology, Clinica Universidad de Navarra, 31008 Pamplona, Spain
| | - Celia P Nieto
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain
| | - Leyre Resano
- Department of Oncology, Clinica Universidad de Navarra, 31008 Pamplona, Spain
| | - Arantza Azpilikueta
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | | | | | - Mariano Ponz-Sarvisé
- Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain; Department of Oncology, Clinica Universidad de Navarra, 31008 Pamplona, Spain
| | - Ana Rouzaut
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain
| | - Miguel F Sanmamed
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain
| | - Kurt Schalper
- Department of Pathology, Yale University School of Medicine, New Haven, CT 06520, USA
| | | | - Mario Mellado
- Chemokine Signaling Group, Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), 28049 Madrid, Spain
| | - María E Rodriguez-Ruiz
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain
| | - Pedro Berraondo
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain
| | - Jose L Perez-Gracia
- Department of Oncology, Clinica Universidad de Navarra, 31008 Pamplona, Spain
| | - Ignacio Melero
- Program for Immunology and Immunotherapy Department, CIMA, Universidad de Navarra, 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), 31008 Pamplona, Spain.
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De Niz M, Carvalho T, Penha-Gonçalves C, Agop-Nersesian C. Intravital imaging of host-parasite interactions in organs of the thoracic and abdominopelvic cavities. Cell Microbiol 2020; 22:e13201. [PMID: 32149435 DOI: 10.1111/cmi.13201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 03/03/2020] [Accepted: 03/06/2020] [Indexed: 12/16/2022]
Abstract
Infections with protozoan and helminthic parasites affect multiple organs in the mammalian host. Imaging pathogens in their natural environment takes a more holistic view on biomedical aspects of parasitic infections. Here, we focus on selected organs of the thoracic and abdominopelvic cavities most commonly affected by parasites. Parasitic infections of these organs are often associated with severe medical complications or have health implications beyond the infected individual. Intravital imaging has provided a more dynamic picture of the host-parasite interplay and contributed not only to our understanding of the various disease pathologies, but has also provided fundamental insight into the biology of the parasites.
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Affiliation(s)
- Mariana De Niz
- Institute of Cell Biology, University of Bern, Bern, Switzerland.,Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Tânia Carvalho
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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35
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Soulet D, Lamontagne-Proulx J, Aubé B, Davalos D. Multiphoton intravital microscopy in small animals: motion artefact challenges and technical solutions. J Microsc 2020; 278:3-17. [PMID: 32072642 PMCID: PMC7187339 DOI: 10.1111/jmi.12880] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 02/06/2020] [Accepted: 02/14/2020] [Indexed: 12/28/2022]
Abstract
Since its invention 29 years ago, two‐photon laser‐scanning microscopy has evolved from a promising imaging technique, to an established widely available imaging modality used throughout the biomedical research community. The establishment of two‐photon microscopy as the preferred method for imaging fluorescently labelled cells and structures in living animals can be attributed to the biophysical mechanism by which the generation of fluorescence is accomplished. The use of powerful lasers capable of delivering infrared light pulses within femtosecond intervals, facilitates the nonlinear excitation of fluorescent molecules only at the focal plane and determines by objective lens position. This offers numerous benefits for studies of biological samples at high spatial and temporal resolutions with limited photo‐damage and superior tissue penetration. Indeed, these attributes have established two‐photon microscopy as the ideal method for live‐animal imaging in several areas of biology and have led to a whole new field of study dedicated to imaging biological phenomena in intact tissues and living organisms. However, despite its appealing features, two‐photon intravital microscopy is inherently limited by tissue motion from heartbeat, respiratory cycles, peristalsis, muscle/vascular tone and physiological functions that change tissue geometry. Because these movements impede temporal and spatial resolution, they must be properly addressed to harness the full potential of two‐photon intravital microscopy and enable accurate data analysis and interpretation. In addition, the sources and features of these motion artefacts are varied, sometimes unpredictable and unique to specific organs and multiple complex strategies have previously been devised to address them. This review will discuss these motion artefacts requirement and technical solutions for their correction and after intravital two‐photon microscopy.
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Affiliation(s)
- D Soulet
- Centre de recherche du CHUL, Department of Neurosciences, Quebec, Canada.,Faculty of Pharmacy, Université Laval, Quebec, Canada
| | - J Lamontagne-Proulx
- Centre de recherche du CHUL, Department of Neurosciences, Quebec, Canada.,Faculty of Pharmacy, Université Laval, Quebec, Canada
| | - B Aubé
- Centre de recherche du CHUL, Department of Neurosciences, Quebec, Canada
| | - D Davalos
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, U.S.A
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36
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Teng X, Li F, Lu C. Visualization of materials using the confocal laser scanning microscopy technique. Chem Soc Rev 2020; 49:2408-2425. [PMID: 32134417 DOI: 10.1039/c8cs00061a] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The development of materials science always benefits from advanced characterizations. Currently, imaging techniques are of great technological importance in both fundamental and applied research on materials. In comparison to conventional visualization methods, confocal laser scanning microscopy (CLSM) is non-invasive, with macroscale and high-contrast scanning, a simple and fast sample preparation procedure as well as easy operation. In addition, CLSM allows rapid acquisition of longitudinal and cross-sectional images at any position in a material. Therefore, the CLSM-based visualization technique could provide direct and model-independent insight into material characterizations. This review summarizes the recent applications of CLSM in materials science. The current CLSM approaches for the visualization of surface structures, internal structures, spatial structures and reaction processes are discussed in detail. Finally, we provide our thoughts and predictions on the future development of CLSM in materials science. The purpose of this review is to guide researchers to build a suitable CLSM approach for material characterizations, and to open viable opportunities and inspirations for the development of new strategies aiming at the preparation of advanced materials. We hope that this review will be useful for a wide range of research communities of materials science, chemistry, and engineering.
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Affiliation(s)
- Xu Teng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering (BAICAS), State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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37
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Sun D, Sun P, He S, Shi M. Rat IgG mediated circulatory cell depletion in mice requires mononuclear phagocyte system and is facilitated by complement. J Leukoc Biol 2020; 107:529-539. [PMID: 31965640 DOI: 10.1002/jlb.4a1219-078r] [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: 03/05/2019] [Revised: 12/25/2019] [Accepted: 01/09/2020] [Indexed: 12/24/2022] Open
Abstract
Application of exogenous Abs targeting cell surface Ags has been widely used as an experimental approach to induce cell depletion or to inhibit receptor functionality. Moreover, Ab therapy is emerging as one of the mainstream strategies for cancer treatment. Previous studies on the mechanisms of Ab-mediated cell depletion mainly employed Abs from the same species as the research subject. However, there has been a recent trend toward using xenogeneic (cross-species) Abs to achieve cell depletion or block receptor-ligand interactions; with rat Abs used in mice being the most common approach. Considering the molecular differences in Abs from different species, the mechanism(s) of xenogeneic Ab-mediated cell depletion is likely to be different than species-matched Ab supplementation. The current work describes our efforts to identify the mechanism of rat anti-mouse Ly6G (clone: 1A8) mAb mediated depletion of mouse neutrophils. The results showed that neutrophils circulating in the blood but not those in the bone marrow are depleted, and depletion depends on mononuclear phagocyte system, especially liver Kupffer cells that efficiently capture and phagocytize targeted cells. Interestingly, whereas species-matched Ab depletion does not require complement functionality, we found that complement activation significantly facilitates cross-species neutrophil depletion. Finally, we found that some rat mAbs (anti-C5aR, anti-CD11a, anti-CD11b, and anti-VLA4) used to block cell surface receptors also induce cell depletion. Thus, our work strongly recommends controlling for cell depletion effect when using these Abs for receptor blockade purposes.
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Affiliation(s)
- Donglei Sun
- Division of Immunology, Virginia-Maryland College of Veterinary Medicine and Maryland Pathogen Research Institute, University of Maryland, College Park, Maryland, USA
| | - Peng Sun
- Division of Immunology, Virginia-Maryland College of Veterinary Medicine and Maryland Pathogen Research Institute, University of Maryland, College Park, Maryland, USA.,School of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Shenghu He
- School of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Meiqing Shi
- Division of Immunology, Virginia-Maryland College of Veterinary Medicine and Maryland Pathogen Research Institute, University of Maryland, College Park, Maryland, USA
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CRIg plays an essential role in intravascular clearance of bloodborne parasites by interacting with complement. Proc Natl Acad Sci U S A 2019; 116:24214-24220. [PMID: 31723045 DOI: 10.1073/pnas.1913443116] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Although CRIg was originally identified as a macrophage receptor for binding complement C3b/iC3b in vitro, recent studies reveal that CRIg functions as a pattern recognition receptor in vivo for Kupffer cells (KCs) to directly bind bacterial pathogens in a complement-independent manner. This raises the critical question of whether CRIg captures circulating pathogens through interactions with complement in vivo under flow conditions. Furthermore, the role of CRIg during parasitic infection is unknown. Taking advantage of intravital microscopy and using African trypanosomes as a model, we studied the role of CRIg in intravascular clearance of bloodborne parasites. Complement C3 is required for intravascular clearance of African trypanosomes by KCs, preventing the early mortality of infected mice. Moreover, antibodies are essential for complement-mediated capture of circulating parasites by KCs. Interestingly, reduced antibody production was observed in the absence of complement C3 during infection. We further demonstrate that CRIg but not CR3 is critically involved in KC-mediated capture of circulating parasites, accounting for parasitemia control and host survival. Of note, CRIg cannot directly catch circulating parasites and antibody-induced complement activation is indispensable for CRIg-mediated parasite capture. Thus, we provide evidence that CRIg, by interacting with complement in vivo, plays an essential role in intravascular clearance of bloodborne parasites. Targeting CRIg may be considered as a therapeutic strategy.
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Mafra K, Nakagaki BN, Castro Oliveira HM, Rezende RM, Antunes MM, Menezes GB. The liver as a nursery for leukocytes. J Leukoc Biol 2019; 106:687-693. [PMID: 31107980 DOI: 10.1002/jlb.mr1118-455r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/10/2019] [Accepted: 04/26/2019] [Indexed: 12/20/2022] Open
Abstract
Leukocytes are a large population of cells spread within most tissues in the body. These cells may be either sessile (called as resident cells) or circulating leukocytes, which travel long journeys inside the vessels during their lifespan. Although production and maturation of these leukocytes in adults primarily occur in the bone marrow, it is well known that this process-called hematopoiesis-started in the embryonic life in different sites, including the yolk sac, placenta, and the liver. In this review, we will discuss how the liver acts as a pivotal site for leukocyte maturation during the embryo phase, and also how the most frequent liver-resident immune cell populations-namely Kupffer cells, dendritic cells, and lymphocytes-play a vital role in both tolerance and inflammatory responses to antigens from food, microbiota, and pathogens.
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Affiliation(s)
- Kassiana Mafra
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Brenda Naemi Nakagaki
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Hortência Maciel Castro Oliveira
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Rafael Machado Rezende
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Maísa Mota Antunes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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40
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Barbosa GO, Silva JAF, Siqueira‐Berti A, Nishan U, Rosa‐Ribeiro R, Oliveira SBP, Baratti MO, Ferrucci D, Santana JCO, Damas‐Souza DM, Bruni‐Cardoso A, Augusto TM, Corrêa‐da‐Silva F, Moraes‐Vieira PM, Stach‐Machado DR, Felisbino SL, Menezes GB, Cesar CL, Carvalho HF. Castration‐induced prostate epithelial cell apoptosis results from targeted oxidative stress attack of M1
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‐macrophages. J Cell Physiol 2019; 234:19048-19058. [DOI: 10.1002/jcp.28544] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 01/24/2019] [Accepted: 01/28/2019] [Indexed: 01/28/2023]
Affiliation(s)
- Guilherme O. Barbosa
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Juliete A. F. Silva
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Aline Siqueira‐Berti
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Umar Nishan
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Rafaela Rosa‐Ribeiro
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Silvia B. P. Oliveira
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Mariana O. Baratti
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
- National Institute for Science and Technology of Photonics Applied to Cell Biology (INFABiC) Campinas Sao Paulo Brazil
| | - Danilo Ferrucci
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Julio C. O. Santana
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Danilo M. Damas‐Souza
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | | | - Taize M. Augusto
- Department of Pathology Jundiai Medical School Jundiai São Paulo Brazil
| | - Felipe Corrêa‐da‐Silva
- Department of Genetics, Evolution, Microbiology, and Immunology State University of Campinas Campinas São Paulo Brazil
| | - Pedro M. Moraes‐Vieira
- Department of Genetics, Evolution, Microbiology, and Immunology State University of Campinas Campinas São Paulo Brazil
| | - Dagmar R. Stach‐Machado
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
| | - Sergio L. Felisbino
- National Institute for Science and Technology of Photonics Applied to Cell Biology (INFABiC) Campinas Sao Paulo Brazil
- Department of Morphology São Paulo State University Botucatu São Paulo Brazil
| | - Gustavo B. Menezes
- Department of Morphology Federal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Carlos L. Cesar
- National Institute for Science and Technology of Photonics Applied to Cell Biology (INFABiC) Campinas Sao Paulo Brazil
- Department of Quantum Electronics State University of Campinas Campinas São Paulo Brazil
| | - Hernandes F. Carvalho
- Department of Structural and Functional Biology State University of Campinas Campinas Sao Paulo Brazil
- National Institute for Science and Technology of Photonics Applied to Cell Biology (INFABiC) Campinas Sao Paulo Brazil
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41
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Lin Q, Deng D, Song X, Dai B, Yang X, Luo Q, Zhang Z. Self-Assembled "Off/On" Nanopomegranate for In Vivo Photoacoustic and Fluorescence Imaging: Strategic Arrangement of Kupffer Cells in Mouse Hepatic Lobules. ACS NANO 2019; 13:1526-1537. [PMID: 30716272 DOI: 10.1021/acsnano.8b07283] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Kupffer cells (KCs), potent scavenger cells located in hepatic sinusoids, constantly phagocytize and degrade foreign materials to maintain metabolism and clearance. Understanding the strategic KC arrangement which links to their spatial location and function in hepatic lobules, the basic functional unit in the liver, is highly valuable for characterizing liver function. However, selectively labeling KCs and characterizing their function in vivo remains challenging. Herein, a fast self-assembled pomegranate structure-like nanoparticle with "nanopomegranate seeds" of dye aggregates has been developed, which has dual-modality "off/on" capability. This nanopomegranate shows good photostability, a high extinction coefficient, a high KC labeling efficiency (98.8%), and better visualization of KC morphology than commercial FluoSpheres. In vivo photoacoustic (PA) and fluorescence imaging consistently visualize that KCs are strategically distributed along the central vein (CV)-portal triad (PT) axis in each liver lobule: more and larger KCs exist in areas closer to the PTs. The high-resolution PA quantitative data further revealed that the density of KCs was linearly dependent on the r n/ rmax ratio (their relative location along the CV-PT axis) ( R2 = 0.7513), and the KC density at the outermost layer is almost 246-fold that at the innermost layer (each layer is 8 μm). Notably, the phagocytic ability of KCs located in layers with r n/ rmax ratios of 0.167-0.3 varies in a zigzag pattern, as evidenced by their different PA intensities. Additionally, the fluorescence imaging quantitation suggests similar fluorescence activation of nanopomegranate in KCs. Nanopomegranates combined with dual-modality imaging reveal the strategic arrangement of KCs in vivo, greatly extending our understanding of liver physiology.
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Affiliation(s)
- Qiaoya Lin
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei , 430074 , China
| | - Deqiang Deng
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei , 430074 , China
| | - Xianlin Song
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei , 430074 , China
| | - Bolei Dai
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei , 430074 , China
| | - Xiaoquan Yang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei , 430074 , China
| | - Qingming Luo
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei , 430074 , China
| | - Zhihong Zhang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei , 430074 , China
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42
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Amaral EP, Costa DL, Namasivayam S, Riteau N, Kamenyeva O, Mittereder L, Mayer-Barber KD, Andrade BB, Sher A. A major role for ferroptosis in Mycobacterium tuberculosis-induced cell death and tissue necrosis. J Exp Med 2019; 216:556-570. [PMID: 30787033 PMCID: PMC6400546 DOI: 10.1084/jem.20181776] [Citation(s) in RCA: 205] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/15/2018] [Accepted: 02/01/2019] [Indexed: 12/17/2022] Open
Abstract
Necrotic tissue damage is a major pathological feature of tuberculosis. Here, Amaral et al. show that ferroptosis, a newly described regulated cell death pathway, plays an important role in Mycobacterium tuberculosis–induced cellular necrosis both in vitro and in vivo. Necrotic cell death during Mycobacterium tuberculosis (Mtb) infection is considered host detrimental since it facilitates mycobacterial spread. Ferroptosis is a type of regulated necrosis induced by accumulation of free iron and toxic lipid peroxides. We observed that Mtb-induced macrophage necrosis is associated with reduced levels of glutathione and glutathione peroxidase-4 (Gpx4), along with increased free iron, mitochondrial superoxide, and lipid peroxidation, all of which are important hallmarks of ferroptosis. Moreover, necrotic cell death in Mtb-infected macrophage cultures was suppressed by ferrostatin-1 (Fer-1), a well-characterized ferroptosis inhibitor, as well as by iron chelation. Additional experiments in vivo revealed that pulmonary necrosis in acutely infected mice is associated with reduced Gpx4 expression as well as increased lipid peroxidation and is likewise suppressed by Fer-1 treatment. Importantly, Fer-1–treated infected animals also exhibited marked reductions in bacterial load. Together, these findings implicate ferroptosis as a major mechanism of necrosis in Mtb infection and as a target for host-directed therapy of tuberculosis.
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Affiliation(s)
- Eduardo P Amaral
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Diego L Costa
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Sivaranjani Namasivayam
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Nicolas Riteau
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD.,University of Orleans and CNRS, UMR7355, Orleans, France
| | - Olena Kamenyeva
- Research Technology Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Lara Mittereder
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Katrin D Mayer-Barber
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health Bethesda, MD
| | - Bruno B Andrade
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil.,Multinational Organization Network Sponsoring Translational and Epidemiological Research Initiative, José Silveira Foundation, Salvador, Brazil.,Wellcome Centre for Infectious Disease Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.,Division of Infectious Diseases, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN.,Universidade Salvador, Laureate University, Salvador, Bahia, Brazil.,Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | - Alan Sher
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
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43
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Monti-Rocha R, Cramer A, Gaio Leite P, Antunes MM, Pereira RVS, Barroso A, Queiroz-Junior CM, David BA, Teixeira MM, Menezes GB, Machado FS. SOCS2 Is Critical for the Balancing of Immune Response and Oxidate Stress Protecting Against Acetaminophen-Induced Acute Liver Injury. Front Immunol 2019; 9:3134. [PMID: 30723477 PMCID: PMC6349694 DOI: 10.3389/fimmu.2018.03134] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 12/18/2018] [Indexed: 12/27/2022] Open
Abstract
Acetaminophen (APAP) is usually safe when administrated in therapeutic doses; however, APAP overdose can lead to severe liver injury. APAP can cause direct hepatocyte damage, and stimulates an inflammatory response leading to oxidative stress. Supressor of Cytokine Signaling (SOCS) 2 modulates cytokine and growth factor signaling, and plays a role in the regulation of hepatic cellular processes. Our study evaluated the role of SOCS2 in APAP liver injury. The administration of a toxic dose (600 mg/kg) of APAP caused significant liver necrosis in WT mice. In SOCS2−/− mice, there was significantly more necrosis, neutrophil recruitment, and expression of the neutrophil-active chemokine CXCL-1. Expression of proinflammatory cytokines, such as TNF-α and IL-6, was elevated, while expression of anti-inflammatory cytokines, IL-10 and TGF-β, was diminished. In vitro, SOCS2−/− hepatocytes expressed more p-NF-kB and produced more ROS than WT hepatocytes when exposed to APAP. SOCS2−/− hepatocytes were more sensitive to cell death in the presence of IL-6 and hydrogen peroxide. The administration of catalase in vitro and in vivo resulted in a pronounced reduction of cells/mice death and necrosis in the SOCS2−/− group. We have demonstrated that SOCS2 has a protective role in the liver by controlling pro-oxidative and inflammatory mechanisms induced by APAP.
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Affiliation(s)
- Renata Monti-Rocha
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Allysson Cramer
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Paulo Gaio Leite
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Maísa Mota Antunes
- Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Rafaela Vaz Sousa Pereira
- Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Andréia Barroso
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Celso M Queiroz-Junior
- Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Bruna Araújo David
- Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Gustavo Batista Menezes
- Department of Morphology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Fabiana Simão Machado
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
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44
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Duan J, Lu G, Hong Y, Hu Q, Mai X, Guo J, Si X, Wang F, Zhang Y. Live imaging and tracking of genome regions in CRISPR/dCas9 knock-in mice. Genome Biol 2018; 19:192. [PMID: 30409154 PMCID: PMC6225728 DOI: 10.1186/s13059-018-1530-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/09/2018] [Indexed: 12/23/2022] Open
Abstract
CRISPR/dCas9 is a versatile tool that can be used to recruit various effectors and fluorescent molecules to defined genome regions where it can modulate genetic and epigenetic markers, or track the chromatin dynamics in live cells. In vivo applications of CRISPR/dCas9 in animals have been challenged by delivery issues. We generate and characterize a mouse strain with dCas9-EGFP ubiquitously expressed in various tissues. Studying telomere dynamics in these animals reveals surprising results different from those observed in cultured cell lines. The CRISPR/dCas9 knock-in mice provide an important and versatile tool to mechanistically study genome functions in live animals.
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Affiliation(s)
- Jinzhi Duan
- Graduate Program, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,National Institute of Biological Sciences, Beijing, 102206, China
| | - Guangqing Lu
- Graduate Program, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,National Institute of Biological Sciences, Beijing, 102206, China
| | - Yu Hong
- Peking University-Tsinghua University-National Institute of Biological Sciences Joint Graduate Program, School of Life Sciences, Peking University, Beijing, 100871, China.,National Institute of Biological Sciences, Beijing, 102206, China
| | - Qingtao Hu
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Xueying Mai
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Jing Guo
- Graduate Program, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,National Institute of Biological Sciences, Beijing, 102206, China
| | - Xiaofang Si
- Graduate Program, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,National Institute of Biological Sciences, Beijing, 102206, China
| | - Fengchao Wang
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Yu Zhang
- Graduate Program, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China. .,Peking University-Tsinghua University-National Institute of Biological Sciences Joint Graduate Program, School of Life Sciences, Peking University, Beijing, 100871, China. .,National Institute of Biological Sciences, Beijing, 102206, China. .,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China.
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45
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Pittet MJ, Garris CS, Arlauckas SP, Weissleder R. Recording the wild lives of immune cells. Sci Immunol 2018; 3:eaaq0491. [PMID: 30194240 PMCID: PMC6771424 DOI: 10.1126/sciimmunol.aaq0491] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 07/24/2018] [Indexed: 12/11/2022]
Abstract
Intravital microscopic imaging can uncover fundamental aspects of immune cell behavior in real time in both healthy and pathological states. Here, we discuss approaches for single-cell imaging of adaptive and innate immune cells to explore how they migrate, communicate, and mediate regulatory or effector functions in various tissues throughout the body. We further review how intravital single-cell imaging can be used to study drug effects on immune cells.
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Affiliation(s)
- Mikael J Pittet
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, MA 02114, USA.
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Christopher S Garris
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, MA 02114, USA
- Graduate Program in Immunology, Harvard Medical School, Boston, MA 02115, USA
| | - Sean P Arlauckas
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, CPZN 5206, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
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46
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Araujo AMD, Antunes MM, Mattos MS, Diniz AB, Alvarenga DM, Nakagaki BN, Carvalho ÉD, Lacerda VAS, Carvalho-Gontijo R, Goulart J, Mafra K, Freitas-Lopes MA, Oliveira HMDC, Dutra CM, David BA, Mendes Silva A, Quesniaux V, Ryffel B, Oliveira SC, Barber GN, Mansur DS, Cunha TM, Rezende RM, Oliveira AG, Menezes GB. Liver Immune Cells Release Type 1 Interferon Due to DNA Sensing and Amplify Liver Injury from Acetaminophen Overdose. Cells 2018; 7:cells7080088. [PMID: 30060463 PMCID: PMC6115735 DOI: 10.3390/cells7080088] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/23/2018] [Accepted: 07/26/2018] [Indexed: 01/07/2023] Open
Abstract
Hepatocytes may rupture after a drug overdose, and their intracellular contents act as damage-associated molecular patterns (DAMPs) that lead to additional leukocyte infiltration, amplifying the original injury. Necrosis-derived DNA can be recognized as a DAMP, activating liver non-parenchymal cells (NPCs). We hypothesized that NPCs react to DNA by releasing interferon (IFN)-1, which amplifies acetaminophen (APAP)-triggered liver necrosis. We orally overdosed different knockout mouse strains to investigate the pathways involved in DNA-mediated amplification of APAP-induced necrosis. Mice were imaged under intravital confocal microscopy to estimate injury progression, and hepatocytes and liver NPCs were differentially isolated for gene expression assays. Flow cytometry (FACS) using a fluorescent reporter mouse estimated the interferon-beta production by liver leukocytes under different injury conditions. We also treated mice with DNase to investigate the role of necrosis DNA signaling in IFN-1 production. Hepatocytes released a large amount of DNA after APAP overdose, which was not primarily sensed by these cells. However, liver NPCs promptly sensed such environmental disturbances and activated several DNA sensing pathways. Liver NPCs synthesized and released IFN-1, which was associated with concomitant hepatocyte necrosis. Ablation of IFN-1 recognition in interferon α/β receptor (IFNAR−/−) mice delayed APAP-mediated liver necrosis and dampened IFN-1 sensing pathways. We demonstrated a novel loop involving DNA recognition by hepatic NPCs and additional IFN-1 mediated hepatocyte death.
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Affiliation(s)
- Alan Moreira de Araujo
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Maísa Mota Antunes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Matheus Silvério Mattos
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Ariane Barros Diniz
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Débora Moreira Alvarenga
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Brenda Naemi Nakagaki
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Érika de Carvalho
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Viviane Aparecida Souza Lacerda
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Raquel Carvalho-Gontijo
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Jorge Goulart
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Kassiana Mafra
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Maria Alice Freitas-Lopes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Hortência Maciel de Castro Oliveira
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Camila Miranda Dutra
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Bruna Araújo David
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Aristóbolo Mendes Silva
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Valerie Quesniaux
- Experimental and Molecular Immunology and Neurogenetics CNRS, University of Orleans, 45000 Orleans, France.
| | - Bernhard Ryffel
- Experimental and Molecular Immunology and Neurogenetics CNRS, University of Orleans, 45000 Orleans, France.
| | - Sergio Costa Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Glen N Barber
- Department of Cell Biology and the Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Daniel Santos Mansur
- Laboratory of Immunobiology, Universidade Federal de Santa Catarina, Santa Catarina 88040-900, Brazil.
| | - Thiago Mattar Cunha
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo 14049-900, Brazil.
| | - Rafael Machado Rezende
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - André Gustavo Oliveira
- Departamento de Fisiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av Antonio Carlos, 6627-Belo Horizonte, Minas Gerais 31270-901, Brazil.
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47
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Bitto N, Liguori E, La Mura V. Coagulation, Microenvironment and Liver Fibrosis. Cells 2018; 7:E85. [PMID: 30042349 PMCID: PMC6115868 DOI: 10.3390/cells7080085] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 07/19/2018] [Accepted: 07/20/2018] [Indexed: 12/12/2022] Open
Abstract
Fibrosis is the main consequence of any kind of chronic liver damage. Coagulation and thrombin generation are crucial in the physiological response to tissue injury; however, the inappropriate and uncontrolled activation of coagulation cascade may lead to fibrosis development due to the involvement of several cellular types and biochemical pathways in response to thrombin generation. In the liver, hepatic stellate cells and sinusoidal endothelial cells orchestrate fibrogenic response to chronic damage. Thrombin interacts with these cytotypes mainly through protease-activated receptors (PARs), which are expressed by endothelium, platelets and hepatic stellate cells. This review focuses on the impact of coagulation in liver fibrogenesis, describes receptors and pathways involved and explores the potential antifibrotic properties of drugs active in hemostasis in studies with cells, animal models of liver damage and humans.
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Affiliation(s)
- Niccolò Bitto
- Medicina Interna, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Donato, Università Degli Studi di Milano, 20097 San Donato Milanese (MI), Italy.
| | - Eleonora Liguori
- Medicina Interna, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Donato, Università Degli Studi di Milano, 20097 San Donato Milanese (MI), Italy.
| | - Vincenzo La Mura
- Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, UOC Medicina Generale-Emostasi e Trombosi, 20122 Milano, Italy.
- Dipartimento di Scienze biomediche per la Salute, Università degli Studi di Milano, 20122 Milano, Italy.
- A. M. and A. Migliavacca per lo studio delle Malattie del Fegato, 20122 Milano, Italy.
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Fonseca MDC, França A, Florentino RM, Fonseca RC, Lima Filho ACM, Vidigal PTV, Oliveira AG, Dubuquoy L, Nathanson MH, Leite MF. Cholesterol-enriched membrane microdomains are needed for insulin signaling and proliferation in hepatic cells. Am J Physiol Gastrointest Liver Physiol 2018; 315:G80-G94. [PMID: 29471671 PMCID: PMC6109708 DOI: 10.1152/ajpgi.00008.2018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Hepatocyte proliferation during liver regeneration is a well-coordinated process regulated by the activation of several growth factor receptors, including the insulin receptor (IR). The IR can be localized in part to cholesterol-enriched membrane microdomains, but the role of such domains in insulin-mediated events in hepatocytes is not known. We investigated whether partitioning of IRs into cholesterol-enriched membrane rafts is important for the mitogenic effects of insulin in the hepatic cells. IR and lipid rafts were labeled in HepG2 cells and primary rat hepatocytes. Membrane cholesterol was depleted in vitro with metyl-β-cyclodextrin (MβCD) and in vivo with lovastatin. Insulin-induced calcium (Ca2+) signals studies were examined in HepG2 cells and in freshly isolated rat hepatocytes as well as in whole liver in vivo by intravital confocal imaging. Liver regeneration was studied by 70% partial hepatectomy (PH), and hepatocyte proliferation was assessed by PCNA staining. A subpopulation of IR was found in membrane microdomains enriched in cholesterol. Depletion of cholesterol from plasma membrane resulted in redistribution of the IR along the cells, which was associated with impaired insulin-induced nuclear Ca2+ signals, a signaling event that regulates hepatocyte proliferation. Cholesterol depletion also led to ERK1/2 hyper-phosphorylation. Lovastatin administration to rats decreased hepatic cholesterol content, disrupted lipid rafts and decreased insulin-induced Ca2+ signaling in hepatocytes, and delayed liver regeneration after PH. Therefore, membrane cholesterol content and lipid rafts integrity showed to be important for the proliferative effects of insulin in hepatic cells. NEW & NOTEWORTHY One of insulin's actions is to stimulate liver regeneration. Here we show that a subpopulation of insulin receptors is in a specialized cholesterol-enriched region of the cell membrane and this subfraction is important for insulin's proliferative effects.
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Affiliation(s)
- Matheus de Castro Fonseca
- 1Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, Sao Paulo, Brazil,2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Andressa França
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil,3Department of Molecular Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Rodrigo Machado Florentino
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Roberta Cristelli Fonseca
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil,4Center for Gastrointestinal Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Paula Teixeira Vieira Vidigal
- 5Department of Pathological Anatomy and Forensic Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - André Gustavo Oliveira
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil,4Center for Gastrointestinal Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Laurent Dubuquoy
- 6Lille Inflammation Research International Center–UMR995, INSERM, University of Lille, Lille, France
| | - Michael H. Nathanson
- 7Section of Digestive Diseases, Department of Internal Medicine, Yale University, New Haven, Connecticut
| | - M. Fátima Leite
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Bright quantum dots emitting at ∼1,600 nm in the NIR-IIb window for deep tissue fluorescence imaging. Proc Natl Acad Sci U S A 2018; 115:6590-6595. [PMID: 29891702 DOI: 10.1073/pnas.1806153115] [Citation(s) in RCA: 230] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
With suppressed photon scattering and diminished autofluorescence, in vivo fluorescence imaging in the 1,500- to 1,700-nm range of the near-IR (NIR) spectrum (NIR-IIb window) can afford high clarity and deep tissue penetration. However, there has been a lack of NIR-IIb fluorescent probes with sufficient brightness and aqueous stability. Here, we present a bright fluorescent probe emitting at ∼1,600 nm based on core/shell lead sulfide/cadmium sulfide (CdS) quantum dots (CSQDs) synthesized in organic phase. The CdS shell plays a critical role of protecting the lead sulfide (PbS) core from oxidation and retaining its bright fluorescence through the process of amphiphilic polymer coating and transferring to water needed for imparting aqueous stability and compatibility. The resulting CSQDs with a branched PEG outer layer exhibited a long blood circulation half-life of 7 hours and enabled through-skin, real-time imaging of blood flows in mouse vasculatures at an unprecedented 60 frames per second (fps) speed by detecting ∼1,600-nm fluorescence under 808-nm excitation. It also allowed through-skin in vivo confocal 3D imaging of tumor vasculatures in mice with an imaging depth of ∼1.2 mm. The PEG-CSQDs accumulated in tumor effectively through the enhanced permeation and retention effect, affording a high tumor-to-normal tissue ratio up to ∼32 owing to the bright ∼1,600-nm emission and nearly zero autofluorescence background resulting from a large ∼800-nm Stoke's shift. The aqueous-compatible CSQDs are excreted through the biliary pathway without causing obvious toxicity effects, suggesting a useful class of ∼1,600-nm emitting probes for biomedical research.
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Da Q, Derry PJ, Lam FW, Rumbaut RE. Fluorescent labeling of endogenous platelets for intravital microscopy: Effects on platelet function. Microcirculation 2018; 25:e12457. [PMID: 29701894 DOI: 10.1111/micc.12457] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 04/18/2018] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Monitoring endogenous platelets during intravital microscopy often involves two approaches: fluorescently labeled antibodies or genetic models of platelet-specific fluorescent protein expression. Due to limited data available on platelet functional changes induced by these methods, we compared functional effects of these methods on platelets. METHODS Platelet aggregation to collagen and thrombin, and collagen matrix-mediated platelet adhesion/aggregation under flow were tested. We assessed platelets from mice expressing EYFP on platelets (Cre(+)), littermate controls (Cre(-)), C57BL/6 mice, and platelets from vehicle control and x-488 treatment. We utilized intravital microscopy to monitor platelets in vivo using Cre(+) mice and x-488 treatment. RESULTS Both genetic and antibody-based approaches yielded substantial platelet-specific fluorescence. Platelets from Cre(+) and Cre(-) mice behaved similarly in aggregation and adhesion/aggregation under flow. However, they exhibited significantly enhanced aggregation and higher adhesion/aggregation as compared to platelets from C57BL/6 mice. Compared to vehicle control, x-488 platelet labeling did not induce significant functional changes in vitro. Both methods of platelet labeling provided satisfactory platelet detectability in vivo. CONCLUSIONS x-488 antibody labeling of platelets induced less alteration of platelet function than genetic approaches under our experimental conditions and seems more suitable for monitoring of endogenous platelets.
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Affiliation(s)
- Qi Da
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical Center, Houston, TX, USA.,Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Paul J Derry
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical Center, Houston, TX, USA.,Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Fong W Lam
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical Center, Houston, TX, USA.,Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Rolando E Rumbaut
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical Center, Houston, TX, USA.,Department of Medicine, Baylor College of Medicine, Houston, TX, USA
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