251
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Mowat AM, Scott CL, Bain CC. Barrier-tissue macrophages: functional adaptation to environmental challenges. Nat Med 2017; 23:1258-1270. [PMID: 29117177 DOI: 10.1038/nm.4430] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 09/29/2017] [Indexed: 12/12/2022]
Abstract
Macrophages are found throughout the body, where they have crucial roles in tissue development, homeostasis and remodeling, as well as being sentinels of the innate immune system that can contribute to protective immunity and inflammation. Barrier tissues, such as the intestine, lung, skin and liver, are exposed constantly to the outside world, which places special demands on resident cell populations such as macrophages. Here we review the mounting evidence that although macrophages in different barrier tissues may be derived from distinct progenitors, their highly specific properties are shaped by the local environment, which allows them to adapt precisely to the needs of their anatomical niche. We discuss the properties of macrophages in steady-state barrier tissues, outline the factors that shape their differentiation and behavior and describe how macrophages change during protective immunity and inflammation.
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Affiliation(s)
- Allan McI Mowat
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medicine, Veterinary Medicine and Life Sciences, University of Glasgow, Glasgow, UK
| | - Charlotte L Scott
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medicine, Veterinary Medicine and Life Sciences, University of Glasgow, Glasgow, UK
- Laboratory of Myeloid Cell Ontogeny and Functional Specialization, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Calum C Bain
- The University of Edinburgh/MRC Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
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252
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Schwarz C, Fitschek F, Bar-Or D, Klaus DA, Tudor B, Fleischmann E, Roth G, Tamandl D, Wekerle T, Gnant M, Bodingbauer M, Kaczirek K. Inflammatory response and oxidative stress during liver resection. PLoS One 2017; 12:e0185685. [PMID: 29045432 PMCID: PMC5646773 DOI: 10.1371/journal.pone.0185685] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 09/18/2017] [Indexed: 12/15/2022] Open
Abstract
Background Postoperative complications are still a major concern after liver resection (LR). Systemic inflammation and deregulated reactive oxygen species during major abdominal surgery may impair outcome after hepatectomy. Methods Patients undergoing LR were included in this study (n = 40). Oxidative stress (OS) was measured peri- and post-operatively as static oxidation-reduction potential markers (sORP) and antioxidant capacity ORP (cORP) by using the RedoxSYS Diagnostic system. Furthermore, Th1- and Th2-specific cytokines were assessed. Results Whereas there was no significant change in systemic sORP during LR and in the early postoperative course, there was a substantial decrease of cORP immediately post-surgery, and on postoperative days 1 and 3 (p<0.001). OS response was tightly regulated, as there was a significant correlation between sORP and cORP (p<0.0001; R2:0.457). An increase of OS (sORP) after LR of more than 3 mV was predictive for severe postoperative complications (53.8% vs. 12.5; p = 0.017). There was a significantly higher IL-2 (p = 0.006) and IL-5 (p = 0.001) increase during hepatectomy in patients who developed a severe morbidity. Conclusion Antioxidant capacity remained stable during LR but dropped during the post-surgical period, suggesting a consumption of antioxidants to maintain OS within healthy range. Severe postoperative complications were associated with a pronounced inflammatory response during surgery.
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Affiliation(s)
- Christoph Schwarz
- Department of Surgery and Center for Perioperative Medicine, Medical University of Vienna, Vienna, Austria
- Section of Transplantation Immunology, Department of Surgery; Medical University of Vienna, Vienna, Austria
| | - Fabian Fitschek
- Department of Surgery and Center for Perioperative Medicine, Medical University of Vienna, Vienna, Austria
| | - David Bar-Or
- Trauma Research Department, St. Anthony Hospital, Lakewood, Colorado, United States of America
- Trauma Research Department, Swedish Medical Center, Englewood, Colorado, United States of America
- Trauma Research Department, Medical Center of Plano, Plano, Texas, United States of America
- AYTU BioScience, Inc., Englewood, Colorado, United States of America
| | - Daniel A. Klaus
- Dept. of Anesthesiology, General Intensive Care and Pain Medicine; Medical University of Vienna, Vienna, Austria
| | - Bianca Tudor
- Dept. of Anesthesiology, General Intensive Care and Pain Medicine; Medical University of Vienna, Vienna, Austria
| | - Edith Fleischmann
- Dept. of Anesthesiology, General Intensive Care and Pain Medicine; Medical University of Vienna, Vienna, Austria
| | - Georg Roth
- Dept. of Anesthesiology, General Intensive Care and Pain Medicine; Medical University of Vienna, Vienna, Austria
| | - Dietmar Tamandl
- Department of Biomedical Imaging and Image Guided Therapy; Medical University of Vienna, Vienna, Austria
| | - Thomas Wekerle
- Section of Transplantation Immunology, Department of Surgery; Medical University of Vienna, Vienna, Austria
| | - Michael Gnant
- Department of Surgery and Center for Perioperative Medicine, Medical University of Vienna, Vienna, Austria
| | - Martin Bodingbauer
- Department of Surgery and Center for Perioperative Medicine, Medical University of Vienna, Vienna, Austria
| | - Klaus Kaczirek
- Department of Surgery and Center for Perioperative Medicine, Medical University of Vienna, Vienna, Austria
- * E-mail:
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253
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Devisscher L, Scott CL, Lefere S, Raevens S, Bogaerts E, Paridaens A, Verhelst X, Geerts A, Guilliams M, Van Vlierberghe H. Non-alcoholic steatohepatitis induces transient changes within the liver macrophage pool. Cell Immunol 2017; 322:74-83. [PMID: 29111158 DOI: 10.1016/j.cellimm.2017.10.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/13/2017] [Accepted: 10/14/2017] [Indexed: 12/31/2022]
Abstract
Kupffer cells (KCs) and monocyte-derived macrophages are implicated in non-alcoholic steatohepatitis (NASH) pathogenesis but their functions remain unclear due to the lack of specific markers to distinguish between the different cell types. Additionally, it is unclear if multiple subsets of KCs are present during NASH. Here, we characterized the liver macrophage subsets during methionine/choline deficient (MCD) diet-induced NASH and recovery. We observed a significant reduced contribution of Ly6CloClec4F+Tim4+KCs to the hepatic macrophage pool in MCD fed mice, which normalized during recovery. Ly6CloClec4F-Tim4- monocyte-derived macrophages increased during MCD feeding and returned to baseline during recovery. Ly6CloClec4F+Tim4- monocyte-derived KCs developed during initial recovery but did not self-renew as their numbers were reduced after full recovery. Initial recovery from MCD diet feeding was further characterized by increased proportions of Ki-67+ proliferating KCs. In conclusion, the hepatic macrophage pool undergoes substantial albeit transient changes during NASH and recovery, with the KC pool being maintained by proliferation and differentiation of short-lived monocyte-derived KCs.
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Affiliation(s)
- Lindsey Devisscher
- Department of Gastroenterology and Hepatology, Ghent University, Belgium.
| | - Charlotte L Scott
- Laboratory of Myeloid Cell Ontogeny and Functional Specialization, VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medicine, Veterinary Medicine and Life Sciences, University of Glasgow, UK.
| | - Sander Lefere
- Department of Gastroenterology and Hepatology, Ghent University, Belgium
| | - Sarah Raevens
- Department of Gastroenterology and Hepatology, Ghent University, Belgium
| | - Eliene Bogaerts
- Department of Gastroenterology and Hepatology, Ghent University, Belgium
| | - Annelies Paridaens
- Department of Gastroenterology and Hepatology, Ghent University, Belgium
| | - Xavier Verhelst
- Department of Gastroenterology and Hepatology, Ghent University, Belgium
| | - Anja Geerts
- Department of Gastroenterology and Hepatology, Ghent University, Belgium
| | - Martin Guilliams
- Laboratory of Myeloid Cell Ontogeny and Functional Specialization, VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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254
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Ginhoux F, Bleriot C, Lecuit M. Dying for a Cause: Regulated Necrosis of Tissue-Resident Macrophages upon Infection. Trends Immunol 2017. [DOI: 10.1016/j.it.2017.05.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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255
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Tian L, Li W, Yang L, Chang N, Fan X, Ji X, Xie J, Yang L, Li L. Cannabinoid Receptor 1 Participates in Liver Inflammation by Promoting M1 Macrophage Polarization via RhoA/NF-κB p65 and ERK1/2 Pathways, Respectively, in Mouse Liver Fibrogenesis. Front Immunol 2017; 8:1214. [PMID: 29033935 PMCID: PMC5625548 DOI: 10.3389/fimmu.2017.01214] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/13/2017] [Indexed: 12/12/2022] Open
Abstract
Macrophage M1/M2 polarization mediates tissue damage and inflammatory responses. Cannabinoid receptor (CB) 1 participated in liver fibrogenesis by affecting bone marrow (BM)-derived monocytes/macrophages (BMMs) activation. However, the knowledge of whether CB1 is involved in the polarization of BMMs remains limited. Here, we found M1 gene signatures (including CD86, MIP-1β, tumor necrosis factor, IL-6, and inducible nitric oxide synthase) and the amount of M1 macrophages (CD86+ cells, gated by F4/80) were significantly elevated in carbon tetrachloride (CCl4)-induced mouse injured livers, while that of M2 type macrophages had little change by RT-qPCR and fluorescence-activated cell sorting (FACS). Our preceding study confirmed CB1 was involved in CCl4-induced liver fibrogenesis. Our results noted CB1 expression showed positive correlation with CD86. Blockade of CB1 by its antagonist or siRNA in vivo downregulated the mRNA and protein levels of M1 markers using RT-qPCR, western blot, and Cytometric Bead Array (CBA) assays, and reduced the proportion of M1 macrophages. Moreover, chimera mouse models, which received BM transplants from EGFP-transgenic mice or clodronate liposome injection mouse models, in which Kupffer cells were depleted, were performed to clarify the role of CB1 on the polarization of Kupffer cells and BMMs. We found that CB1 was especially involved in BMM polarization toward M1 phenotype but have no effect on that of Kupffer cells. The reason might due to the lower CB1 expression in Kupffer cells than that of BMMs. In vitro, we discovered CB1 was involved in the polarization of BMMs toward M1. Furthermore, CB1-induced M1 polarization was apparently impaired by PTX [G(α)i/o protein inhibitor], Y27632 (ROCK inhibitor), and PD98059 [extracellular signal-regulated kinase (ERK) inhibitor], while SB203580 (p38 inhibitor) and compound C (AMPK inhibitor) had no such effect. ACEA (CB1 agonist) activated G(α)i/o coupled CB1, then enlarged GTP-bound Rho and phosphor-ERK1/2, independently. NF-κB p65 nuclear translocation is also a marker of M1 phenotype macrophages. We found that CB1 switched on NF-κB p65 nuclear translocation only depending on G(α)i/o/RhoA signaling pathway.
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Affiliation(s)
- Lei Tian
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Weiyang Li
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Le Yang
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Na Chang
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Xiaoting Fan
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Xiaofang Ji
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Jieshi Xie
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Lin Yang
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Liying Li
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
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256
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Tissue-Resident Macrophages in Pancreatic Ductal Adenocarcinoma Originate from Embryonic Hematopoiesis and Promote Tumor Progression. Immunity 2017; 47:323-338.e6. [PMID: 28813661 DOI: 10.1016/j.immuni.2017.07.014] [Citation(s) in RCA: 431] [Impact Index Per Article: 61.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 06/04/2017] [Accepted: 07/20/2017] [Indexed: 12/11/2022]
Abstract
Tumor-associated macrophages (TAMs) are essential components of the cancer microenvironment and play critical roles in the regulation of tumor progression. Optimal therapeutic intervention requires in-depth understanding of the sources that sustain macrophages in malignant tissues. In this study, we investigated the ontogeny of TAMs in murine pancreatic ductal adenocarcinoma (PDAC) models. We identified both inflammatory monocytes and tissue-resident macrophages as sources of TAMs. Unexpectedly, significant portions of pancreas-resident macrophages originated from embryonic development and expanded through in situ proliferation during tumor progression. Whereas monocyte-derived TAMs played more potent roles in antigen presentation, embryonically derived TAMs exhibited a pro-fibrotic transcriptional profile, indicative of their role in producing and remodeling molecules in the extracellular matrix. Collectively, these findings uncover the heterogeneity of TAM origin and functions and could provide therapeutic insight for PDAC treatment.
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257
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Gilboa D, Haim-Ohana Y, Deshet-Unger N, Ben-Califa N, Hiram-Bab S, Reuveni D, Zigmond E, Gassmann M, Gabet Y, Varol C, Neumann D. Erythropoietin enhances Kupffer cell number and activity in the challenged liver. Sci Rep 2017; 7:10379. [PMID: 28871174 PMCID: PMC5583293 DOI: 10.1038/s41598-017-11082-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/15/2017] [Indexed: 02/07/2023] Open
Abstract
Erythropoietin (EPO) is the main hormone driving mammalian erythropoiesis, with activity mediated via the surface receptor, EPO-R, on erythroid progenitor cells. Recombinant human EPO is currently used clinically for the treatment of anemia in patients with end-stage renal disease, and in certain cancer patients suffering from anemia induced either by the tumor itself or by chemotherapy. EPO-R expression is also detected in non-erythroid cells, including macrophages present in the peritoneum, spleen, and bone marrow (BM). Here we demonstrate that Kupffer cells (KCs) - the liver-resident macrophages - are EPO targets. We show that, in vitro, EPO initiated intracellular signalling and enhanced phagocytosis in a rat KC line (RKC-2) and in sorted KCs. Moreover, continuous EPO administration in mice, resulted in an increased number of KCs, up-regulation of liver EPO-R expression and elevated production of the monocyte chemoattractant CCL2, with corresponding egress of Ly6Chi monocytes from the BM. In a model of acute acetaminophen-induced liver injury, EPO administration increased the recruitment of Ly6Chi monocytes and neutrophils to the liver. Taken together, our results reveal a new role for EPO in stimulating KC proliferation and phagocytosis, and in recruiting Ly6Chi monocytes in response to liver injury.
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Affiliation(s)
- Dafna Gilboa
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yasmin Haim-Ohana
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Naamit Deshet-Unger
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Nathalie Ben-Califa
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sahar Hiram-Bab
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Debby Reuveni
- The Research Center for Digestive Tract and Liver Diseases, Sourasky Medical Center and Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ehud Zigmond
- The Research Center for Digestive Tract and Liver Diseases, Sourasky Medical Center and Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Max Gassmann
- Institute for Veterinary Physiology, Vetsuisse Faculty and Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Zurich, Switzerland
| | - Yankel Gabet
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Chen Varol
- The Research Center for Digestive Tract and Liver Diseases, Sourasky Medical Center and Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Drorit Neumann
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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258
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Abstract
Monocytes are short-lived mononuclear phagocytes that circulate in the bloodstream and comprise two main subpopulations that in the mouse are best defined by the Ly6C marker. Intravascular functions of "classical" Ly6C+ monocytes and their interactions with other lymphoid and myeloid leukocytes in the circulation remain poorly understood. Rather, these cells are known to efficiently extravasate into tissues. Indeed, Ly6C+ monocytes and their descendants have emerged as a third, highly plastic and dynamic cellular system that complements the two classical, tissue-resident mononuclear phagocyte compartments, i.e., macrophages and dendritic cells, on demand. Following recruitment to injured tissue, Ly6C+ monocytes respond to local cues and can critically contribute to the initiation and resolution of inflammatory reactions. The second main murine monocyte subset, Ly6C- cells, derive in steady state from Ly6C+ monocytes and remain in the vasculature, where the cells act as scavengers. Moreover, a major fraction of Ly6C- monocytes adheres to the capillary endothelium and patrols the vessel wall for surveillance. Given the central role of monocytes in homeostasis and pathology, in-depth study of this cellular compartment can be highly informative on the health state of the organism and provides an attractive target for therapeutic intervention.
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259
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Zigmond E, Varol C. With Respect to Macrophages, Judge the Liver by Its Cover. Immunity 2017; 47:219-221. [PMID: 28813654 DOI: 10.1016/j.immuni.2017.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Kupffer cells are recognized as the sole liver-resident macrophages responsible for clearance of blood-borne pathogens reaching liver sinusoids. Sierro et al. (2017) uncover a distinct liver-resident macrophage population residing in its capsule, which creates a firewall against peritoneal infections.
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Affiliation(s)
- Ehud Zigmond
- The Research Center for Digestive Tract and Liver Diseases, Tel-Aviv Sourasky Medical Center and Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Chen Varol
- The Research Center for Digestive Tract and Liver Diseases, Tel-Aviv Sourasky Medical Center and Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel; Department of Clinical Microbiology and Immunology, The Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel.
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260
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Xie DL, Zheng MM, Zheng Y, Gao H, Zhang J, Zhang T, Guo JC, Yang XF, Zhong XP, Lou YL. Vibrio vulnificus induces mTOR activation and inflammatory responses in macrophages. PLoS One 2017; 12:e0181454. [PMID: 28719654 PMCID: PMC5515453 DOI: 10.1371/journal.pone.0181454] [Citation(s) in RCA: 9] [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: 04/13/2017] [Accepted: 07/01/2017] [Indexed: 12/18/2022] Open
Abstract
Vibrio vulnificus (V. vulnificus), a Gram-negative marine bacterium, can cause life-threatening primary septicemia, especially in patients with liver diseases. How V. vulnificus affects the liver and how it acts on macrophages are not well understood. In this report, we demonstrated that V. vulnificus infection causes a strong inflammatory response, marked expansion of liver-resident macrophages, and liver damage in mice. We demonstrated further that V. vulnificus activates mTOR in macrophages and inhibition of mTOR differentially regulates V. vulnificus induced inflammatory responses, suggesting the possibility of targeting mTOR as a strategy to modulate V. vulnificus induced inflammatory responses.
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Affiliation(s)
- Dan-Li Xie
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
- China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang, China
| | - Meng-Meng Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yi Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
- China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang, China
| | - Hui Gao
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jie Zhang
- Department of Clinical Laboratory Medicine, Sichuan Provincial People’s Hospital, Chengdu, Sichuan, China
| | - Ting Zhang
- Department of Laboratory Medicine, Jinshan Hospital of Fudan University, Jinshan, Shanghai, China
| | - Jian-Chun Guo
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - X. Frank Yang
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Xiao-Ping Zhong
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
- China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang, China
- Department of Pediatrics, Division of Allergy and Immunology, Duke University Medical Center, Durham, NC, United States of America
- * E-mail: (YLL); (XPZ)
| | - Yong-Liang Lou
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
- China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang, China
- * E-mail: (YLL); (XPZ)
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261
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Schlüter D, Heidel FH. Macrophage's little helper: vitamin A directs alternatively activated monocyte-derived macrophages to tissue-resident macrophages. Cell Mol Immunol 2017; 14:805-808. [PMID: 28690329 DOI: 10.1038/cmi.2017.58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 11/09/2022] Open
Affiliation(s)
- Dirk Schlüter
- Institute of Medical Microbiology and Hospital Hygiene, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany.,Organ-Specific Immune Regulation, Helmholtz-Center for Infection Research, Braunschweig 38124, Germany
| | - Florian H Heidel
- Innere Medizin II, Hämatologie und Onkologie, Universitätsklinikum Jena, Jena 07745, Germany.,Leibniz-Institute on Aging, Fritz-Lipmann-Institute, Jena, Germany
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262
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The role of monocytes in models of infection by protozoan parasites. Mol Immunol 2017; 88:174-184. [PMID: 28704704 DOI: 10.1016/j.molimm.2017.06.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 05/29/2017] [Accepted: 06/04/2017] [Indexed: 02/07/2023]
Abstract
The confirmation of developmental differences between tissue macrophages and peripheral monocytes has changed our view of the functions and dynamics of these two important components of the innate immune system. It has been demonstrated conclusively that homeostasis of tissue resident macrophages is maintained by a low proliferative turn over. During an inflammatory response, bone marrow derived monocytes enter the tissue in large numbers and take part in the defense against the pathogens. After the destruction of invading pathogens, these cells disappear and tissue resident macrophages can be detected again. This new appreciation of the innate immune response has not only answered many outstanding questions regarding the role of the different myeloid cell types in inflammation, but also opened up new areas of research relating to the tissue- and pathogen-specific fate of the inflammatory macrophages or dendritic cells (DCs), and the transfer of this knowledge from mouse models to the human immune system. Nevertheless, there is still confusion in infection models, and especially in studies of human infections, as to what extent these recent observations and findings influence previous interpretations of data. This review will focus on insights from mouse models, summarize the literature on the ontogeny of macrophages and monocytes, explain the role of frequently used monocyte markers and effector molecules, and finally, discuss the role of inflammatory monocytes/macrophages/DCs in two experimental parasitic diseases.
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263
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Emerging roles of basophils in allergic inflammation. Allergol Int 2017; 66:382-391. [PMID: 28506528 DOI: 10.1016/j.alit.2017.04.007] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 12/24/2022] Open
Abstract
Basophils have long been neglected in immunological studies because they were regarded as only minor relatives of mast cells. However, recent advances in analytical tools for basophils have clarified the non-redundant roles of basophils in allergic inflammation. Basophils play crucial roles in both IgE-dependent and -independent allergic inflammation, through their migration to the site of inflammation and secretion of various mediators, including cytokines, chemokines, and proteases. Basophils are known to produce large amounts of IL-4 in response to various stimuli. Basophil-derived IL-4 has recently been shown to play versatile roles in allergic inflammation by acting on various cell types, including macrophages, innate lymphoid cells, fibroblasts, and endothelial cells. Basophil-derived serine proteases are also crucial for the aggravation of allergic inflammation. Moreover, recent reports suggest the roles of basophils in modulating adaptive immune responses, particularly in the induction of Th2 differentiation and enhancement of humoral memory responses. In this review, we will discuss recent advances in understanding the roles of basophils in allergic inflammation.
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264
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Abstract
Macrophages are present in all vertebrate tissues, from mid-gestation throughout life, constituting a widely dispersed organ system. They promote homeostasis by responding to internal and external changes within the body, not only as phagocytes in defence against microbes and in clearance of dead and senescent cells, but also through trophic, regulatory and repair functions. In this review, we describe macrophage phenotypic heterogeneity in different tissue environments, drawing particular attention to organ-specific functions.
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Affiliation(s)
- Siamon Gordon
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, 33302, Taiwan. .,Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RE, UK.
| | - Annette Plüddemann
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Woodstock Road, Oxford, OX2 6GG, UK
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265
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Jackson-Jones LH, Rückerl D, Svedberg F, Duncan S, Maizels RM, Sutherland TE, Jenkins SJ, McSorley HJ, Bénézech C, MacDonald AS, Allen JE. IL-33 delivery induces serous cavity macrophage proliferation independent of interleukin-4 receptor alpha. Eur J Immunol 2017; 46:2311-2321. [PMID: 27592711 PMCID: PMC5082546 DOI: 10.1002/eji.201646442] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 07/05/2016] [Accepted: 08/29/2016] [Indexed: 12/23/2022]
Abstract
IL‐33 plays an important role in the initiation of type‐2 immune responses, as well as the enhancement of type 2 effector functions. Engagement of the IL‐33 receptor on macrophages facilitates polarization to an alternative activation state by amplifying IL‐4 and IL‐13 signaling to IL‐4Rα. IL‐4 and IL‐13 also induce macrophage proliferation but IL‐33 involvement in this process has not been rigorously evaluated. As expected, in vivo delivery of IL‐33 induced IL‐4Rα‐dependent alternative macrophage activation in the serous cavities. IL‐33 delivery also induced macrophages to proliferate but, unexpectedly, this was independent of IL‐4Rα signaling. In a filarial nematode infection model in which IL‐4Rα‐dependent alternative activation and proliferation in the pleural cavity is well described, IL‐33R was essential for alternative activation but not macrophage proliferation. Similarly, during Alternaria alternata induced airway inflammation, which provokes strong IL‐33 responses, we observed that both IL‐4Rα and IL‐33R were required for alternative activation, while macrophage proliferation in the pleural cavity was still evident in the absence of either receptor alone. Our data show that IL‐33R and IL‐4Rα promote macrophage proliferation independently of each other, but both are essential for induction of alternative activation.
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Affiliation(s)
- Lucy H Jackson-Jones
- School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3FL, UK.,Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, EH16 4TJ, UK
| | - Dominik Rückerl
- School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3FL, UK.,Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, UK
| | - Freya Svedberg
- Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, UK
| | - Sheelagh Duncan
- School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3FL, UK
| | - Rick M Maizels
- Institute of Infection, Immunity & Inflammation, University of Glasgow, Glasgow, G12 8TA, UK
| | - Tara E Sutherland
- School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3FL, UK.,Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, UK
| | - Stephen J Jenkins
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, EH16 4TJ, UK
| | - Henry J McSorley
- School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3FL, UK.,Centre for Inflammation Research, University of Edinburgh, Edinburgh, EH16 4TJ, UK
| | - Cécile Bénézech
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, EH16 4TJ, UK
| | - Andrew S MacDonald
- Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, UK
| | - Judith E Allen
- School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3FL, UK. .,Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, UK.
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266
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RIPK1, a key survival factor for hepatocytes. J Hepatol 2017; 66:1118-1119. [PMID: 28215597 DOI: 10.1016/j.jhep.2017.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 02/08/2017] [Accepted: 02/09/2017] [Indexed: 12/04/2022]
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267
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The Absence of Interferon-β Promotor Stimulator-1 (IPS-1) Predisposes to Bronchiolitis and Asthma-like Pathology in Response to Pneumoviral Infection in Mice. Sci Rep 2017; 7:2353. [PMID: 28539639 PMCID: PMC5443759 DOI: 10.1038/s41598-017-02564-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 04/13/2017] [Indexed: 01/05/2023] Open
Abstract
Respiratory syncytial virus (RSV)-bronchiolitis is a major cause of infant morbidity and mortality and a risk factor for subsequent asthma. We showed previously that toll-like receptor (TLR)7 in plasmacytoid dendritic cells (pDCs) is critical for protection against bronchiolitis and asthma in mice infected with pneumonia virus of mice (PVM), the mouse homolog of RSV. This lack of redundancy was unexpected as interferon-β promotor stimulator-1 (IPS-1) signalling, downstream of RIG-I-like receptor (RLR) and not TLR7 activation, contributes to host defence in hRSV-inoculated adult mice. To further clarify the role of IPS-1 signalling, we inoculated IPS-1−/− and WT mice with PVM in early-life, and again in later-life, to model the association between bronchiolitis and asthma. IPS-1 deficiency predisposed to severe PVM bronchiolitis, characterised by neutrophilic inflammation and necroptotic airway epithelial cell death, high mobility group box 1 (HMGB1) and IL-33 release, and downstream type-2 inflammation. Secondary infection induced an eosinophilic asthma-like pathophysiology in IPS-1−/− but not WT mice. Mechanistically, we identified that IPS-1 is necessary for pDC recruitment, IFN-α production and viral control. Our findings suggest that TLR7 and RLR signalling work collaboratively to optimally control the host response to pneumovirus infection thereby protecting against viral bronchiolitis and subsequent asthma.
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268
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Chen S, Hoffman RA, Scott M, Manson J, Loughran P, Ramadan M, Demetris AJ, Billiar TR. NK1.1 + cells promote sustained tissue injury and inflammation after trauma with hemorrhagic shock. J Leukoc Biol 2017; 102:127-134. [PMID: 28515228 DOI: 10.1189/jlb.3a0716-333r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 02/23/2017] [Accepted: 03/28/2017] [Indexed: 01/02/2023] Open
Abstract
Various cell populations expressing NK1.1 contribute to innate host defense and systemic inflammatory responses, but their role in hemorrhagic shock and trauma remains uncertain. NK1.1+ cells were depleted by i.p. administration of anti-NK1.1 (or isotype control) on two consecutive days, followed by hemorrhagic shock with resuscitation and peripheral tissue trauma (HS/T). The plasma levels of IL-6, MCP-1, alanine transaminase (ALT), and aspartate aminotransferase (AST) were measured at 6 and 24 h. Histology in liver and gut were examined at 6 and 24 h. The number of NK cells, NKT cells, neutrophils, and macrophages in liver, as well as intracellular staining for TNF-α, IFN-γ, and MCP-1 in liver cell populations were determined by flow cytometry. Control mice subjected to HS/T exhibited end organ damage manifested by marked increases in circulating ALT, AST, and MCP-1 levels, as well as histologic evidence of hepatic necrosis and gut injury. Although NK1.1+ cell-depleted mice exhibited a similar degree of organ damage as nondepleted animals at 6 h, NK1.1+ cell depletion resulted in marked suppression of both liver and gut injury by 24 h after HS/T. These findings indicate that NK1.1+ cells contribute to the persistence of inflammation leading to end organ damage in the liver and gut.
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Affiliation(s)
- Shuhua Chen
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Biochemistry, School of Life Sciences, Central South University, Changsha, Hunan, P.R. China; and
| | - Rosemary A Hoffman
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Melanie Scott
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Joanna Manson
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Patricia Loughran
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mostafa Ramadan
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Anthony J Demetris
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; .,Clinical Translational Medical Center of Vascular Disease of the Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
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269
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Li Z, Fan EK, Liu J, Scott MJ, Li Y, Li S, Xie W, Billiar TR, Wilson MA, Jiang Y, Wang P, Fan J. Cold-inducible RNA-binding protein through TLR4 signaling induces mitochondrial DNA fragmentation and regulates macrophage cell death after trauma. Cell Death Dis 2017; 8:e2775. [PMID: 28492546 PMCID: PMC5584526 DOI: 10.1038/cddis.2017.187] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/24/2017] [Accepted: 03/27/2017] [Indexed: 02/06/2023]
Abstract
Trauma is a major cause of systemic inflammatory response syndrome and multiple organ dysfunction syndrome. Macrophages (Mϕ) direct trauma-induced inflammation, and Mϕ death critically influences the progression of the inflammatory response. In the current study, we explored an important role of trauma in inducing mitochondrial DNA (mtDNA) damage in Mϕ and the subsequent regulation of Mϕ death. Using an animal pseudo-fracture trauma model, we demonstrated that tissue damage induced NADPH oxidase activation and increased the release of reactive oxygen species via cold-inducible RNA-binding protein (CIRP)–TLR4–MyD88 signaling. This in turn, activates endonuclease G, which serves as an executor for the fragmentation of mtDNA in Mϕ. We further showed that fragmented mtDNA triggered both p62-related autophagy and necroptosis in Mϕ. However, autophagy activation also suppressed Mϕ necroptosis and pro-inflammatory responses. This study demonstrates a previously unidentified intracellular regulation of Mϕ homeostasis in response to trauma.
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Affiliation(s)
- Zhigang Li
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.,Research and Development, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA
| | - Erica K Fan
- University of Pittsburgh School of Arts and Science, Pittsburgh, PA 15213, USA
| | - Jinghua Liu
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou 510515, China
| | - Melanie J Scott
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Yuehua Li
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.,Research and Development, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA
| | - Song Li
- Department of Pharmaceutical Sciences, Center for Pharmacogenetics, University of Pittsburgh School of Pharmacy, Pittsburgh, PA 15261, USA
| | - Wen Xie
- Department of Pharmaceutical Sciences, Center for Pharmacogenetics, University of Pittsburgh School of Pharmacy, Pittsburgh, PA 15261, USA
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Mark A Wilson
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.,Research and Development, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA
| | - Yong Jiang
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou 510515, China
| | - Ping Wang
- The Feinstein Institute for Medical Research, Manhasset, NY 11030, USA
| | - Jie Fan
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.,Research and Development, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
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270
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Minutti CM, Jackson-Jones LH, García-Fojeda B, Knipper JA, Sutherland TE, Logan N, Ringqvist E, Guillamat-Prats R, Ferenbach DA, Artigas A, Stamme C, Chroneos ZC, Zaiss DM, Casals C, Allen JE. Local amplifiers of IL-4Rα-mediated macrophage activation promote repair in lung and liver. Science 2017; 356:1076-1080. [PMID: 28495878 DOI: 10.1126/science.aaj2067] [Citation(s) in RCA: 148] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 03/11/2017] [Accepted: 04/27/2017] [Indexed: 12/28/2022]
Abstract
The type 2 immune response controls helminth infection and maintains tissue homeostasis but can lead to allergy and fibrosis if not adequately regulated. We have discovered local tissue-specific amplifiers of type 2-mediated macrophage activation. In the lung, surfactant protein A (SP-A) enhanced interleukin-4 (IL-4)-dependent macrophage proliferation and activation, accelerating parasite clearance and reducing pulmonary injury after infection with a lung-migrating helminth. In the peritoneal cavity and liver, C1q enhancement of type 2 macrophage activation was required for liver repair after bacterial infection, but resulted in fibrosis after peritoneal dialysis. IL-4 drives production of these structurally related defense collagens, SP-A and C1q, and the expression of their receptor, myosin 18A. These findings reveal the existence within different tissues of an amplification system needed for local type 2 responses.
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Affiliation(s)
- Carlos M Minutti
- Department of Biochemistry and Molecular Biology I, Complutense University of Madrid, 28040-Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, 28029-Madrid, Spain.,School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Lucy H Jackson-Jones
- School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Belén García-Fojeda
- Department of Biochemistry and Molecular Biology I, Complutense University of Madrid, 28040-Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, 28029-Madrid, Spain
| | - Johanna A Knipper
- School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Tara E Sutherland
- School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK.,Faculty of Biology, Medicine and Health, Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester M13 9NT, UK
| | - Nicola Logan
- School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Emma Ringqvist
- School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Raquel Guillamat-Prats
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, 28029-Madrid, Spain.,Critical Care Centre, Corporació Sanitària Universitària Parc Taulí, Universitat Autònoma de Barcelona Parc Taulí 1, 08208-Sabadell, Spain
| | - David A Ferenbach
- School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Antonio Artigas
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, 28029-Madrid, Spain.,Critical Care Centre, Corporació Sanitària Universitària Parc Taulí, Universitat Autònoma de Barcelona Parc Taulí 1, 08208-Sabadell, Spain
| | - Cordula Stamme
- Division of Cellular Pneumology, Research Center Borstel, Leibniz Center for Medicine and Biosciences, 23845 Borstel, and Department of Anesthesiology and Intensive Care, University of Lübeck, 23538 Lübeck, Germany
| | - Zissis C Chroneos
- Pulmonary Immunology and Physiology Laboratory, Department of Pediatrics, and Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey PA 17033, USA
| | - Dietmar M Zaiss
- School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Cristina Casals
- Department of Biochemistry and Molecular Biology I, Complutense University of Madrid, 28040-Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, 28029-Madrid, Spain
| | - Judith E Allen
- School of Biological Sciences and School of Clinical Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK.,Faculty of Biology, Medicine and Health, Wellcome Centre for Cell-Matrix Research, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK
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271
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Guilliams M, Scott CL. Does niche competition determine the origin of tissue-resident macrophages? Nat Rev Immunol 2017; 17:451-460. [PMID: 28461703 DOI: 10.1038/nri.2017.42] [Citation(s) in RCA: 292] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Most tissue-resident macrophages are derived from embryonic precursors but, under certain circumstances, circulating monocytes can differentiate into self-maintaining tissue-resident macrophages that resemble their embryonic counterparts. In this Opinion article, we propose that distinct macrophage precursors have an almost identical potential to develop into resident macrophages but they compete for a restricted number of niches. The tight regulation of the niche ensures that monocytes do not differentiate into macrophages when the niche is full but that these cells can differentiate efficiently into macrophages when the niche is available. Imprinting by the niche would be the dominant factor conferring macrophage identity and self-maintenance capacity, rather than origin as was previously proposed.
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Affiliation(s)
- Martin Guilliams
- Laboratory of Myeloid Cell Ontogeny and Functional Specialisation, VIB-UGhent Centre for Inflammation Research, Ghent 9052, Belgium; and the Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Charlotte L Scott
- Laboratory of Myeloid Cell Ontogeny and Functional Specialisation, VIB-UGhent Centre for Inflammation Research, Ghent 9052, Belgium; and the Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
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272
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Identification of pro-inflammatory CD205 + macrophages in livers of hepatitis B virus transgenic mice and patients with chronic hepatitis B. Sci Rep 2017; 7:46765. [PMID: 28436459 PMCID: PMC5402278 DOI: 10.1038/srep46765] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 03/23/2017] [Indexed: 12/17/2022] Open
Abstract
Hepatic macrophages play a central role in disease pathogenesis during hepatitis B virus (HBV) infection. Our previous study found that CD205+ macrophages in the liver of hepatitis B surface antigen transgenic (HBs-Tg) mice increased significantly compared with those in wild-type mice, and these increased CD205+ macrophages were involved in CpG-oligodeoxynucleotide-induced liver injury in HBs-Tg mice. Here, we analysed the phenotype and function of CD205+ macrophages derived from the liver of HBs-Tg mice and patients with chronic hepatitis B (CHB). We found that HBs-Tg mice-derived hepatic macrophages produced larger amounts of pro-inflammatory cytokines, including IL-6, IL-12, TNF-α, and of the anti-inflammatory cytokine IL-10 after stimulation with CpG-oligodeoxynucleotides or commensal bacteria DNA than B6 mice-derived hepatic macrophages. Furthermore, hepatic CD205+ macrophages from HBs-Tg mice showed an activated phenotype and expressed higher levels of inflammatory cytokine genes, chemokine genes, and phagocytosis-related genes than hepatic CD205− macrophages. In addition, CD205+ macrophages displayed an inflammatory phenotype and were increased in the liver of patients with CHB compared with those in healthy controls. Our data suggest that hepatic CD205+ macrophages are a unique pro-inflammatory subset observed during HBV infection. Thus, development of intervention targeting these cells is warranted for immunotherapy of HBV-induced liver diseases.
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273
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Abstract
Macrophages represent a key cellular component of the liver, and are essential for maintaining tissue homeostasis and ensuring rapid responses to hepatic injury. Our understanding of liver macrophages has been revolutionized by the delineation of heterogeneous subsets of these cells. Kupffer cells are a self-sustaining, liver-resident population of macrophages and can be distinguished from the monocyte-derived macrophages that rapidly accumulate in the injured liver. Specific environmental signals further determine the polarization and function of hepatic macrophages. These cells promote the restoration of tissue integrity following liver injury or infection, but they can also contribute to the progression of liver diseases, including hepatitis, fibrosis and cancer. In this Review, we highlight novel findings regarding the origin, classification and function of hepatic macrophages, and we discuss their divergent roles in the healthy and diseased liver.
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Affiliation(s)
- Oliver Krenkel
- Department of Medicine III, University Hospital Aachen, D-52074 Aachen, Germany
| | - Frank Tacke
- Department of Medicine III, University Hospital Aachen, D-52074 Aachen, Germany
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274
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Liver macrophages in healthy and diseased liver. Pflugers Arch 2017; 469:553-560. [PMID: 28293730 DOI: 10.1007/s00424-017-1954-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 02/07/2017] [Indexed: 02/07/2023]
Abstract
Kupffer cells, the largest tissue resident macrophage population, are key for the maintenance of liver integrity and its restoration after injury and infections, as well as the local initiation and resolution of innate and adaptive immunity. These important roles of Kupffer cells were recently identified in healthy and diseased liver revealing diverse functions and phenotypes of hepatic macrophages. High-level phenotypic and genomic analysis revealed that Kupffer cells are not a homogenous population and that the hepatic microenvironment actively shapes both phenotype and function of liver macrophages. Compared to macrophages from other organs, hepatic macrophages bear unique properties that are instrumental for their diverse roles in local immunity as well as liver regeneration. The diverse and, in part, contradictory roles of hepatic macrophages in anti-tumor and inflammatory immune responses as well as regulatory and regenerative processes have been obscured by the lack of appropriate technologies to specifically target or ablate Kupffer cells or monocyte-derived hepatic macrophages. Future studies will need to dissect the exact role of the hepatic macrophages with distinct functional properties linked to their differentiation status and thereby provide insight into the functional plasticity of hepatic macrophages.
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275
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Yue S, Zhou H, Wang X, Busuttil RW, Kupiec-Weglinski JW, Zhai Y. Prolonged Ischemia Triggers Necrotic Depletion of Tissue-Resident Macrophages To Facilitate Inflammatory Immune Activation in Liver Ischemia Reperfusion Injury. THE JOURNAL OF IMMUNOLOGY 2017; 198:3588-3595. [PMID: 28289160 DOI: 10.4049/jimmunol.1601428] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 02/15/2017] [Indexed: 12/26/2022]
Abstract
Although mechanisms of immune activation against liver ischemia reperfusion (IR) injury (IRI) have been studied extensively, questions regarding liver-resident macrophages, that is, Kupffer cells (KCs), remain controversial. Recent progress in the biology of tissue-resident macrophages implicates homeostatic functions of KCs. This study aims to dissect responses and functions of KCs in liver IRI. In a murine liver partial warm ischemia model, we analyzed liver-resident versus infiltrating macrophages by FACS and immunofluorescence staining. Our data showed that liver immune activation by IR was associated with not only infiltrations/activations of peripheral macrophages, but also necrotic depletion of KCs. Inhibition of receptor-interacting protein 1 (RIP1) by necrostatin-1s protected KCs from ischemia-induced depletion, resulting in the reduction of macrophage infiltration, suppression of proinflammatory immune activation, and protection of livers from IRI. The depletion of KCs by clodronate liposomes abrogated the effect of necrostatin-1s. Additionally, liver reconstitutions with KCs postischemia exerted anti-inflammatory/cytoprotective effects against IRI. These results reveal a unique response of KCs against liver IR, that is, RIP1-dependent necrosis, which constitutes a novel mechanism of liver inflammatory immune activation in the pathogenesis of liver IRI.
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Affiliation(s)
- Shi Yue
- Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095; and
| | - Haoming Zhou
- Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095; and
| | - Xuehao Wang
- Department of Liver Surgery, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Ronald W Busuttil
- Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095; and
| | - Jerzy W Kupiec-Weglinski
- Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095; and
| | - Yuan Zhai
- Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095; and
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276
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Rückerl D, Campbell SM, Duncan S, Sutherland TE, Jenkins SJ, Hewitson JP, Barr TA, Jackson-Jones LH, Maizels RM, Allen JE. Macrophage origin limits functional plasticity in helminth-bacterial co-infection. PLoS Pathog 2017; 13:e1006233. [PMID: 28334040 PMCID: PMC5364000 DOI: 10.1371/journal.ppat.1006233] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 02/10/2017] [Indexed: 12/18/2022] Open
Abstract
Rapid reprogramming of the macrophage activation phenotype is considered important in the defense against consecutive infection with diverse infectious agents. However, in the setting of persistent, chronic infection the functional importance of macrophage-intrinsic adaptation to changing environments vs. recruitment of new macrophages remains unclear. Here we show that resident peritoneal macrophages expanded by infection with the nematode Heligmosomoides polygyrus bakeri altered their activation phenotype in response to infection with Salmonella enterica ser. Typhimurium in vitro and in vivo. The nematode-expanded resident F4/80high macrophages efficiently upregulated bacterial induced effector molecules (e.g. MHC-II, NOS2) similarly to newly recruited monocyte-derived macrophages. Nonetheless, recruitment of blood monocyte-derived macrophages to Salmonella infection occurred with equal magnitude in co-infected animals and caused displacement of the nematode-expanded, tissue resident-derived macrophages from the peritoneal cavity. Global gene expression analysis revealed that although nematode-expanded resident F4/80high macrophages made an anti-bacterial response, this was muted as compared to newly recruited F4/80low macrophages. However, the F4/80high macrophages adopted unique functional characteristics that included enhanced neutrophil-stimulating chemokine production. Thus, our data provide important evidence that plastic adaptation of MΦ activation does occur in vivo, but that cellular plasticity is outweighed by functional capabilities specific to the tissue origin of the cell.
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Affiliation(s)
- Dominik Rückerl
- Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Sharon M. Campbell
- Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Sheelagh Duncan
- Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Tara E. Sutherland
- Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Stephen J. Jenkins
- Centre for Inflammation Research, School of Clinical Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - James P. Hewitson
- Centre for Immunology and Infection, University of York, York, United Kingdom
| | - Tom A. Barr
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Lucy H. Jackson-Jones
- Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Centre for Cardiovascular Science, School of Clinical Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Rick M. Maizels
- Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Judith E. Allen
- Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
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277
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Nairz M, Theurl I, Swirski FK, Weiss G. "Pumping iron"-how macrophages handle iron at the systemic, microenvironmental, and cellular levels. Pflugers Arch 2017; 469:397-418. [PMID: 28251312 PMCID: PMC5362662 DOI: 10.1007/s00424-017-1944-8] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/25/2017] [Accepted: 01/29/2017] [Indexed: 12/12/2022]
Abstract
Macrophages reside in virtually every organ. First arising during embryogenesis, macrophages replenish themselves in the adult through a combination of self-renewal and influx of bone marrow-derived monocytes. As large phagocytic cells, macrophages participate in innate immunity while contributing to tissue-specific homeostatic functions. Among the key metabolic tasks are senescent red blood cell recycling, free heme detoxification, and provision of iron for de novo hemoglobin synthesis. While this systemic mechanism involves the shuttling of iron between spleen, liver, and bone marrow through the concerted function of defined macrophage populations, similar circuits appear to exist within the microenvironment of other organs. The high turnover of iron is the prerequisite for continuous erythropoiesis and tissue integrity but challenges macrophages’ ability to maintain cellular iron homeostasis and immune function. This review provides a brief overview of systemic, microenvironmental, and cellular aspects of macrophage iron handling with a focus on exciting and unresolved questions in the field.
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Affiliation(s)
- Manfred Nairz
- Department of Internal Medicine VI, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria. .,Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. .,Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Igor Theurl
- Department of Internal Medicine VI, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Filip K Swirski
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.,Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Guenter Weiss
- Department of Internal Medicine VI, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria.
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278
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Zhao D, Cai C, Zheng Q, Jin S, Song D, Shen J, Ran Z. Vancomycin pre-treatment impairs tissue healing in experimental colitis: Importance of innate lymphoid cells. Biochem Biophys Res Commun 2017; 483:237-244. [PMID: 28034757 DOI: 10.1016/j.bbrc.2016.12.160] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 12/23/2016] [Indexed: 02/02/2023]
Abstract
BACKGROUND AND AIMS The interplay between luminal microbes and innate immunity during colonic epithelial repair has been well noted. At the same time, antibiotic has widely been used during flare-ups of ulcerative colitis. The possible effects of luminal microbiota disruption caused by antibiotics usage on epithelial repairing have been scarcely discussed. Innate lymphoid cells (ILCs) embedded in the lamina propria can be modulated by gut microbes, resulting in altered colonic IL-22/pSTAT3 levels, which is considered a prominent molecular axis in tissue repairing after epithelium damage. This study aimed to investigate whether antibiotics could interfere with ILCs-dependent tissue repair. METHODS Dextran sodium sulfate (DSS)-induced colitis was established in mice pre-treated with reagent of different antibiotic spectrum. Both morphological and molecular markers of tissue repair after DSS cessation were detected. ILCs population and function status were also recorded. Further attention was paid to the response of dendritic cells after antibiotics treatment, which were claimed to regulate colonic ILC3s in an IL-23 dependent way. RESULTS Using of vancomycin resulted in delayed tissue repairing after experimental colitis. Both colonic IL-22/pSTAT3 axis and ILC3 population were found decreased in this situation. Vancomycin treatment diminished the upstream IL-23 and producer dendritic cell population. The reduced dendritic cell number may due to inadequate chemokines and colony-stimulating factors supply. CONCLUSION Presence of vancomycin-sensitive microbiota is required for the maturation of ILC3-activating dendritic cells hence maintain the sufficient IL-22/pSTAT3 level in the colon during tissue healing. Manipulation of colonic microbiota may help achieve colonic mucosal healing post inflammation and injury.
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Affiliation(s)
- Di Zhao
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Shanghai Inflammatory Bowel Disease Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, PR China
| | - Chenwen Cai
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Shanghai Inflammatory Bowel Disease Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, PR China
| | - Qing Zheng
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Shanghai Inflammatory Bowel Disease Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, PR China
| | - Shuang Jin
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Shanghai Inflammatory Bowel Disease Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, PR China
| | - Dongjuan Song
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Shanghai Inflammatory Bowel Disease Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, PR China
| | - Jun Shen
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Shanghai Inflammatory Bowel Disease Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, PR China
| | - Zhihua Ran
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Shanghai Inflammatory Bowel Disease Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, PR China.
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279
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Linkermann A. Nonapoptotic cell death in acute kidney injury and transplantation. Kidney Int 2017; 89:46-57. [PMID: 26759047 DOI: 10.1016/j.kint.2015.10.008] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/21/2015] [Accepted: 07/28/2015] [Indexed: 12/31/2022]
Abstract
Acute tubular necrosis causes a loss of renal function, which clinically presents as acute kidney failure (AKI). The biochemical signaling pathways that trigger necrosis have been investigated in detail over the past 5 years. It is now clear that necrosis (regulated necrosis, RN) represents a genetically driven process that contributes to the pathophysiology of AKI. RN pathways such as necroptosis, ferroptosis, parthanatos, and mitochondrial permeability transition-induced regulated necrosis (MPT-RN) may be mechanistically distinct, and the relative contributions to overall organ damage during AKI in living organisms largely remain elusive. In a synchronized manner, some necrotic programs induce the breakdown of tubular segments and multicellular functional units, whereas others are limited to killing single cells in the tubular compartment. Importantly, the means by which a renal cell dies may have implications for the subsequent inflammatory response. In this review, the recent advances in the field of renal cell death in AKI and key enzymes that might serve as novel therapeutic targets will be discussed. As a consequence of the interference with RN, the immunogenicity of dying cells in AKI in renal transplants will be diminished, rendering inhibitors of RN indirect immunosuppressive agents.
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Affiliation(s)
- Andreas Linkermann
- Clinic for Nephrology and Hypertension and Georges-Köhler-Haus for Biomedical Research and Transplantation, Christian-Albrechts-University, Kiel, Germany.
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280
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Abstract
Sepsis and septic shock are characterized by life-threatening organ dysfunction caused by a dysregulated host response to infection. The liver has a central role during sepsis, and is essential to the regulation of immune defence during systemic infections by mechanisms such as bacterial clearance, acute-phase protein or cytokine production and metabolic adaptation to inflammation. However, the liver is also a target for sepsis-related injury, including hypoxic hepatitis due to ischaemia and shock, cholestasis due to altered bile metabolism, hepatocellular injury due to drug toxicity or overwhelming inflammation, as well as distinct pathologies such as secondary sclerosing cholangitis in critically ill patients. Hence, hepatic dysfunction substantially impairs the prognosis of sepsis and serves as a powerful independent predictor of mortality in the intensive care unit. Sepsis is particularly problematic in patients with liver cirrhosis (who experience increased bacterial translocation from the gut and impaired microbial defence) as it can trigger acute-on-chronic liver failure - a syndrome with high short-term mortality. Here, we review the importance of the liver as a guardian, modifier and target of sepsis, the factors that contribute to sepsis in patients with liver cirrhosis and new therapeutic strategies.
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281
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Italiani P, Boraschi D. Development and Functional Differentiation of Tissue-Resident Versus Monocyte-Derived Macrophages in Inflammatory Reactions. Results Probl Cell Differ 2017; 62:23-43. [PMID: 28455704 DOI: 10.1007/978-3-319-54090-0_2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Mononuclear phagocytes are key cells in tissue integrity and defense. Tissue-resident macrophages are abundantly present in all tissues of the body and have a complex role in ensuring tissue functions and homeostatic balance. Circulating blood monocytes can enter tissue both in steady-state conditions, for helping in replenishing the tissue-resident macrophage pool and, in particular, for acting as potent effector cells during inflammatory events such as infections, traumas, and diseases. The heterogeneity of monocytes and macrophages depends on their ontogeny, their tissue location, and their functional programming, with both monocytes and macrophages able to exert distinct or similar functions depending on the tissue-specific and stimulus-specific microenvironment. In this short review, we will review the current hypotheses on tissue-resident macrophage ontogeny and functions, as compared to blood-derived monocytes, with a particular focus on inflammatory conditions.
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Affiliation(s)
- Paola Italiani
- Institute of Protein Biochemistry, National Research Council, Via Pietro Castellino 111, 80131, Naples, Italy.
| | - Diana Boraschi
- Institute of Protein Biochemistry, National Research Council, Via Pietro Castellino 111, 80131, Naples, Italy
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282
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Abstract
Macrophages regulate tissue regeneration following injury. They can worsen tissue injury by producing reactive oxygen species and other toxic mediators that disrupt cell metabolism, induce apoptosis, and exacerbate ischemic injury. However, they also produce a variety of growth factors, such as IGF-1, VEGF-α, TGF-β, and Wnt proteins that regulate epithelial and endothelial cell proliferation, myofibroblast activation, stem and tissue progenitor cell differentiation, and angiogenesis. Proresolving macrophages in turn restore tissue homeostasis by functioning as anti-inflammatory cells, and macrophage-derived matrix metalloproteinases regulate fibrin and collagen turnover. However, dysregulated macrophage function impairs wound healing and contributes to the development of fibrosis. Consequently, the mechanisms that regulate these different macrophage activation states have become active areas of research. In this review, we discuss the common and unique mechanisms by which macrophages instruct tissue repair in the liver, nervous system, heart, lung, skeletal muscle, and intestine and illustrate how macrophages might be exploited therapeutically.
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Affiliation(s)
- Kevin M Vannella
- Immunopathogenesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892; ,
| | - Thomas A Wynn
- Immunopathogenesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892; ,
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283
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Galluzzi L, Kepp O, Chan FKM, Kroemer G. Necroptosis: Mechanisms and Relevance to Disease. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2016; 12:103-130. [PMID: 27959630 DOI: 10.1146/annurev-pathol-052016-100247] [Citation(s) in RCA: 458] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Necroptosis is a form of regulated cell death that critically depends on receptor-interacting serine-threonine kinase 3 (RIPK3) and mixed lineage kinase domain-like (MLKL) and generally manifests with morphological features of necrosis. The molecular mechanisms that underlie distinct instances of necroptosis have just begun to emerge. Nonetheless, it has already been shown that necroptosis contributes to cellular demise in various pathophysiological conditions, including viral infection, acute kidney injury, and cardiac ischemia/reperfusion. Moreover, human tumors appear to obtain an advantage from the downregulation of key components of the molecular machinery for necroptosis. Although such an advantage may stem from an increased resistance to adverse microenvironmental conditions, accumulating evidence indicates that necroptosis-deficient cancer cells are poorly immunogenic and hence escape natural and therapy-elicited immunosurveillance. Here, we discuss the molecular mechanisms and relevance to disease of necroptosis.
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Affiliation(s)
- Lorenzo Galluzzi
- Department of Radiation Oncology, Weill Cornell Medical College, New York, NY 10065; .,Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; .,INSERM, U1138, 75006 Paris, France.,Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France.,Université Pierre et Marie Curie/Paris VI, 75006 Paris, France.,Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France
| | - Oliver Kepp
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; .,INSERM, U1138, 75006 Paris, France.,Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France.,Université Pierre et Marie Curie/Paris VI, 75006 Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France;
| | | | - Guido Kroemer
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; .,INSERM, U1138, 75006 Paris, France.,Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France.,Université Pierre et Marie Curie/Paris VI, 75006 Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France; .,Department of Women's and Children's Health, Karolinska Institute, Karolinska University Hospital, 17176 Stockholm, Sweden.,Pôle de Biologie, Hôpital Européen George Pompidou, AP-HP, 75015 Paris, France
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284
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McNamara HA, Cockburn IA. The three Rs: Recruitment, Retention and Residence of leukocytes in the liver. Clin Transl Immunology 2016; 5:e123. [PMID: 28435674 PMCID: PMC5384287 DOI: 10.1038/cti.2016.84] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/21/2016] [Accepted: 12/01/2016] [Indexed: 12/20/2022] Open
Abstract
The composition of leukocytes in the liver is highly distinct from that of the blood and lymphoid organs. In particular, the liver is highly enriched in non-conventional T cells such as natural killer T (NKT) cells, γδ T cells and mucosal-associated invariant T cells. In addition, there are significant populations of tissue-resident NK cells (or innate lymphoid cells (ILC1)) and memory CD8+ T cells. These cells are joined in conditions of inflammation by neutrophils, monocytes and macrophages. In recent years a multitude of studies have generated insights into how these cells arrest, move and remain resident in the liver. This new understanding has largely been due to the use of intra-vital microscopy to track immune cells in the liver, coupled with gene expression profiling and parabiosis techniques. These studies have revealed that leukocyte recruitment in the liver does not correspond to the classical paradigm of the leukocyte adhesion cascade. Rather, both lymphoid and myeloid cells have been found to adhere in the liver sinusoids in a platelet-dependent manner. Leukocytes have also been observed to patrol the hepatic sinusoids using a characteristic crawling motility. Moreover, T cells have been observed surveying hepatocytes for antigen through the unique fenestrated endothelium of the liver sinusoids, potentially negating the need for extravasation. In this review we highlight some of these recent discoveries and examine the different molecular interactions required for the recruitment, retention and-in some cases-residence of diverse leukocyte populations within the liver.
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Affiliation(s)
- Hayley A McNamara
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Ian A Cockburn
- Department of Immunology and Infectious Disease, John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia
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285
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van de Garde MDB, Movita D, van der Heide M, Herschke F, De Jonghe S, Gama L, Boonstra A, Vanwolleghem T. Liver Monocytes and Kupffer Cells Remain Transcriptionally Distinct during Chronic Viral Infection. PLoS One 2016; 11:e0166094. [PMID: 27812182 PMCID: PMC5094584 DOI: 10.1371/journal.pone.0166094] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 10/21/2016] [Indexed: 01/12/2023] Open
Abstract
Due to the scarcity of immunocompetent animal models for chronic viral hepatitis, little is known about the role of the innate intrahepatic immune system during viral replication in the liver. These insights are however fundamental for the understanding of the inappropriate adaptive immune responses during the chronic phase of the infection. We apply the Lymphocytic Choriomenigitis Virus (LCMV) clone 13 mouse model to examine chronic virus-host interactions of Kupffer cells (KC) and infiltrating monocytes (IM) in an infected liver. LCMV infection induced overt clinical hepatitis, with rise in ALT and serum cytokines, and increased intrahepatic F4/80 expression. Despite ongoing viral replication, whole liver transcriptome showed baseline expression levels of inflammatory cytokines, interferons, and interferon induced genes during the chronic infection phase. Transcriptome analyses of sorted KC and IMs using NanoString technology revealed two unique phenotypes with only minimal overlap. At the chronic viral infection phase, KC showed no increased transcription of activation markers Cd80 and Cd86, but an increased expression of genes related to antigen presentation, whereas monocytes were more activated and expressed higher levels of Tnf transcripts. Although both KCs and intrahepatic IM share the surface markers F4/80 and CD11b, their transcriptomes point towards distinctive roles during virus-induced chronic hepatitis.
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Affiliation(s)
- Martijn D. B. van de Garde
- Department of Gastroenterology and Hepatology Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Dowty Movita
- Department of Gastroenterology and Hepatology Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Marieke van der Heide
- Department of Gastroenterology and Hepatology Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | | | - Lucio Gama
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Andre Boonstra
- Department of Gastroenterology and Hepatology Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Thomas Vanwolleghem
- Department of Gastroenterology and Hepatology Erasmus University Medical Center, Rotterdam, The Netherlands
- * E-mail:
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286
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Lung surfactant metabolism: early in life, early in disease and target in cell therapy. Cell Tissue Res 2016; 367:721-735. [PMID: 27783217 DOI: 10.1007/s00441-016-2520-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 09/27/2016] [Indexed: 01/07/2023]
Abstract
Lung surfactant is a complex mixture of lipids and proteins lining the alveolar epithelium. At the air-liquid interface, surfactant lowers surface tension, avoiding alveolar collapse and reducing the work of breathing. The essential role of lung surfactant in breathing and therefore in life, is highlighted by surfactant deficiency in premature neonates, which causes neonatal respiratory distress syndrome and results in early death after birth. In addition, defects in surfactant metabolism alter lung homeostasis and lead to disease. Special attention should be paid to two important key cells responsible for surfactant metabolism: alveolar epithelial type II cells (AE2C) and alveolar macrophages (AM). On the one hand, surfactant deficiency coming from abnormal AE2C function results in high surface tension, promoting alveolar collapse and mechanical stress in the epithelium. This epithelial injury contributes to tissue remodeling and lung fibrosis. On the other hand, impaired surfactant catabolism by AM leads to accumulation of surfactant in air spaces and the associated altered lung function in pulmonary alveolar proteinosis (PAP). We review here two recent cell therapies that aim to recover the activity of AE2C or AM, respectively, therefore targeting the restoring of surfactant metabolism and lung homeostasis. Applied therapies successfully show either transplantation of healthy AE2C in fibrotic lungs, to replace injured AE2C cells and surfactant, or transplantation of bone marrow-derived macrophages to counteract accumulation of surfactant lipid and proteinaceous material in the alveolar spaces leading to PAP. These therapies introduce an alternative treatment with great potential for patients suffering from lung diseases.
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287
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Amiya T, Nakamoto N, Chu PS, Teratani T, Nakajima H, Fukuchi Y, Taniki N, Yamaguchi A, Shiba S, Miyake R, Katayama T, Ebinuma H, Kanai T. Bone marrow-derived macrophages distinct from tissue-resident macrophages play a pivotal role in Concanavalin A-induced murine liver injury via CCR9 axis. Sci Rep 2016; 6:35146. [PMID: 27725760 PMCID: PMC5057133 DOI: 10.1038/srep35146] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 09/26/2016] [Indexed: 12/24/2022] Open
Abstract
The fundamental mechanism how heterogeneous hepatic macrophage (Mφ) subsets fulfill diverse functions in health and disease has not been elucidated. We recently reported that CCR9+ inflammatory Mφs play a critical role in the course of acute liver injury. To clarify the origin and differentiation of CCR9+Mφs, we used a unique partial bone marrow (BM) chimera model with liver shielding for maintaining hepatic resident Mφs. First, irradiated mice developed less liver injury with less Mφs accumulation by Concanavalin A (Con A) regardless of liver shielding. In mice receiving further BM transplantation, CD11blowF4/80high hepatic-resident Mφs were not replaced by transplanted donors under steady state, while under inflammatory state by Con A, CCR9+Mφs were firmly replaced by donors, indicating that CCR9+Mφs originate from BM, but not from hepatic-resident cells. Regarding the mechanism of differentiation and proliferation, EdU+CCR9+Mφs with a proliferative potential were detected specifically in the inflamed liver, and in vitro study revealed that BM-derived CD11b+ cells co-cultured with hepatic stellate cells (HSCs) or stimulated with retinoic acids could acquire CCR9 with antigen-presenting ability. Collectively, our study demonstrates that inflammatory Mφs originate from BM and became locally differentiated and proliferated by interaction with HSCs via CCR9 axis during acute liver injury.
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Affiliation(s)
- Takeru Amiya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan.,Research Unit/Frontier Therapeutic Sciences, Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Japan
| | - Nobuhiro Nakamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Po-Sung Chu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Toshiaki Teratani
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hideaki Nakajima
- Department of Stem Cell and ImmuneRegulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yumi Fukuchi
- Department of Pathophysiology, Faculty of Pharmaceutical Sciences, Hoshi University, Tokyo, Japan
| | - Nobuhito Taniki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Akihiro Yamaguchi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shunsuke Shiba
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Rei Miyake
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tadashi Katayama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hirotoshi Ebinuma
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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288
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Inhibition of ROS and upregulation of inflammatory cytokines by FoxO3a promotes survival against Salmonella typhimurium. Nat Commun 2016; 7:12748. [PMID: 27599659 PMCID: PMC5023958 DOI: 10.1038/ncomms12748] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 07/27/2016] [Indexed: 12/26/2022] Open
Abstract
Virulent intracellular pathogens, such as the Salmonella species, engage numerous virulence factors to subvert host defence mechanisms to induce a chronic infection that leads to typhoid or exacerbation of other chronic inflammatory conditions. Here we show the role of the forkhead transcription factor FoxO3a during infection of mice with Salmonella typhimurium (ST). Although FoxO3a signalling does not affect the development of CD8+ T cell responses to ST, FoxO3a has an important protective role, particularly during the chronic stage of infection, by limiting the persistence of oxidative stress. Furthermore, FoxO3a signalling regulates ERK signalling in macrophages, which results in the maintenance of a proinflammatory state. FoxO3a signalling does not affect cell proliferation or cell death. Thus, these results reveal mechanisms by which FoxO3a promotes host survival during infection with chronic, virulent intracellular bacteria. FoxO3a signalling has limited influence over acute bacterial infection. Here the authors show that FoxO3a promotes survival of mice in response to chronic Salmonella typhimurium infection by restraining oxidative stress and ERK signalling.
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289
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Chalmers SA, Wen J, Shum J, Doerner J, Herlitz L, Putterman C. CSF-1R inhibition attenuates renal and neuropsychiatric disease in murine lupus. Clin Immunol 2016; 185:100-108. [PMID: 27570219 DOI: 10.1016/j.clim.2016.08.019] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/22/2016] [Accepted: 08/23/2016] [Indexed: 11/27/2022]
Abstract
Systemic lupus erythematosus (SLE) is a multifactorial autoimmune disease that can affect multiple end organs. Kidney and brain are two of the organs most commonly involved in SLE. Past studies have suggested the importance of macrophages in the pathogenesis of lupus nephritis (LN). Furthermore, as the immune effectors of the brain, microglia have been implicated in pathways leading to neuropsychiatric SLE (NPSLE). We depleted macrophages and microglia using GW2580, a small colony stimulating factor-1 receptor (CSF-1R) kinase inhibitor, in MRL-lpr/lpr (MRL/lpr) mice, a classic murine lupus model that displays features of both LN and NPSLE. Treatment was initiated before the onset of disease, and mice were followed for the development of LN and neurobehavioral dysfunction throughout the study. Treatment with GW2580 significantly ameliorated kidney disease, as evidenced by decreased proteinuria, BUN, and improved renal histopathology, despite equivalent levels of IgG and C3 deposition in the kidneys of treated and control mice. We were able to confirm macrophage depletion within the kidney via IBA-1 staining. Furthermore, we observed specific improvement in the depression-like behavioral deficit of MRL/lpr mice with GW2580 treatment. Circulating antibody and autoantibody levels were, however, not affected. These results provide additional support for the role of macrophages as a potentially valuable therapeutic target in SLE. Inhibiting CSF-1 receptor signaling would be more targeted than current immunosuppressive therapies, and may hold promise for the treatment of renal and neuropsychiatric end organ disease manifestations.
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Affiliation(s)
- Samantha A Chalmers
- Albert Einstein College of Medicine, Department of Microbiology and Immunology, Bronx, NY, USA
| | - Jing Wen
- Albert Einstein College of Medicine, Department of Microbiology and Immunology, Bronx, NY, USA
| | - Justine Shum
- Montefiore Medical Center, Department of Medicine, Bronx, NY, USA
| | - Jessica Doerner
- Albert Einstein College of Medicine, Department of Microbiology and Immunology, Bronx, NY, USA
| | - Leal Herlitz
- Cleveland Clinic, Department of Pathology, Cleveland, OH, USA
| | - Chaim Putterman
- Albert Einstein College of Medicine, Department of Microbiology and Immunology, Bronx, NY, USA; Albert Einstein College of Medicine, Division of Rheumatology, Bronx, NY, USA.
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290
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Reid DT, Reyes JL, McDonald BA, Vo T, Reimer RA, Eksteen B. Kupffer Cells Undergo Fundamental Changes during the Development of Experimental NASH and Are Critical in Initiating Liver Damage and Inflammation. PLoS One 2016; 11:e0159524. [PMID: 27454866 PMCID: PMC4959686 DOI: 10.1371/journal.pone.0159524] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 07/04/2016] [Indexed: 02/06/2023] Open
Abstract
Non-alcoholic fatty liver disease has become the leading liver disease in North America and is associated with the progressive inflammatory liver disease non-alcoholic steatohepatitis (NASH). Considerable effort has been made to understand the role of resident and recruited macrophage populations in NASH however numerous questions remain. Our goal was to characterize the dynamic changes in liver macrophages during the initiation of NASH in a murine model. Using the methionine-choline deficient diet we found that liver-resident macrophages, Kupffer cells were lost early in disease onset followed by a robust infiltration of Ly-6C+ monocyte-derived macrophages that retained a dynamic phenotype. Genetic profiling revealed distinct patterns of inflammatory gene expression between macrophage subsets. Only early depletion of liver macrophages using liposomal clodronate prevented the development of NASH in mice suggesting that Kupffer cells are critical for the orchestration of inflammation during experimental NASH. Increased understanding of these dynamics may allow us to target potentially harmful populations whilst promoting anti-inflammatory or restorative populations to ultimately guide the development of effective treatment strategies.
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Affiliation(s)
- D. T. Reid
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - J. L. Reyes
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Laboratorio de Inmunología Experimental y Regulación de la Inflamación Hepato-intestinal, UBIMED, FES Iztacala, UNAM, Mexico
| | - B. A. McDonald
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - T. Vo
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - R. A. Reimer
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - B. Eksteen
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- * E-mail:
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291
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Ke X, Lei L, Li H, Li H, Yan F. Manipulation of necroptosis by Porphyromonas gingivalis in periodontitis development. Mol Immunol 2016; 77:8-13. [PMID: 27449906 DOI: 10.1016/j.molimm.2016.07.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/14/2016] [Accepted: 07/14/2016] [Indexed: 12/21/2022]
Abstract
To eliminate invading pathogens and keep homeostasis, host employs multiple approaches such as the non-inflammation associated-apoptosis, inflammation associated-necroptosis and pyroptosis, etc. Necroptosis is known as a highly pro-inflammatory form of cell death due to the release of massive damage-associated molecular patterns (DAMPs). For the first time, we reported that Porphyromonas gingivalis induced cellular necroptosis through receptor-interacting protein 1 (RIP1)/RIP3/mixed lineage kinase domain-like (MLKL) signaling pathway in monocytes. Necroptosis in THP-1 cells was induced by MLKL phosphorylation in vitro. P. gingivalis treated-THP-1 cells exhibited lower cell death rate with pretreatment of inhibitors RIP1 and MLKL, accompanied with attenuated TNF-α and IL-6 expressions. Moreover, the necroptosis risk was also reduced via gene silencing by RIP3 or MLKL in the P. gingivalis treated-THP-1 cell lines. We further explored P. gingivalis-induced necroptosis in animal models in vivo. Firstly, C57BL/6 mice were injected with P. gingivalis in the subcutaneous chamber model. Animals pretreated with MLKL inhibitor exhibited significantly enhanced P. gingivalis clearance; in addition, levels of TNF-α and IL-6 were notably decreased by 60% via MLKL inhibition. Secondly, P. gingivalis-induced periodontitis was utilized to investigate necroptosis related-periodontopathogensis. Positive staining of phosphorylated MLKL in mice periodontitis biopsies was detected to a higher degree, while larger amount of alveolar bone loss was observed in MLKL (-) group comparing to those in the MLKL (+) group. These findings may suggest that P. gingivalis play essential roles in necroptosis process during periodontitis, and our research may shed light on the further work on the related periodontopathogenesis investigation.
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Affiliation(s)
- Xiaojing Ke
- Nanjing Stomatological Hospital, Medical School of Nanjing University, China
| | - Lang Lei
- Nanjing Stomatological Hospital, Medical School of Nanjing University, China
| | - Huang Li
- Nanjing Stomatological Hospital, Medical School of Nanjing University, China
| | - Houxuan Li
- Nanjing Stomatological Hospital, Medical School of Nanjing University, China.
| | - Fuhua Yan
- Nanjing Stomatological Hospital, Medical School of Nanjing University, China.
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292
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Hagemeyer N, Kierdorf K, Frenzel K, Xue J, Ringelhan M, Abdullah Z, Godin I, Wieghofer P, Costa Jordão MJ, Ulas T, Yorgancioglu G, Rosenbauer F, Knolle PA, Heikenwalder M, Schultze JL, Prinz M. Transcriptome-based profiling of yolk sac-derived macrophages reveals a role for Irf8 in macrophage maturation. EMBO J 2016; 35:1730-44. [PMID: 27412700 DOI: 10.15252/embj.201693801] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 06/15/2016] [Indexed: 12/23/2022] Open
Abstract
Recent studies have shown that tissue macrophages (MΦ) arise from embryonic progenitors of the yolk sac (YS) and fetal liver and colonize tissues before birth. Further studies have proposed that developmentally distinct tissue MΦ can be identified based on the differential expression of F4/80 and CD11b, but whether a characteristic transcriptional profile exists is largely unknown. Here, we took advantage of an inducible fate-mapping system that facilitated the identification of CD45(+)c-kit(-)CX3CR1(+)F4/80(+) (A2) progenitors of the YS as the source of F4/80(hi) but not CD11b(hi) MΦ. Large-scale transcriptional profiling of MΦ precursors from the YS stage to adulthood allowed for building computational models for F4/80(hi) tissue macrophages being direct descendants of A2 progenitors. We further identified a distinct molecular signature of F4/80(hi) and CD11b(hi) MΦ and found that Irf8 was vital for MΦ maturation. Our data provide new cellular and molecular insights into the origin and developmental pathways of tissue MΦ.
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Affiliation(s)
- Nora Hagemeyer
- Institute of Neuropathology, University of Freiburg, Freiburg, Germany
| | - Katrin Kierdorf
- Institute of Neuropathology, University of Freiburg, Freiburg, Germany
| | - Kathrin Frenzel
- Institute of Neuropathology, University of Freiburg, Freiburg, Germany
| | - Jia Xue
- Genomics and Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany
| | - Marc Ringelhan
- Institute of Virology, Technische Universität München/Helmholtz-Zentrum Munich, Munich, Germany Second Medical Department, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Zeinab Abdullah
- Institute of Experimental Immunology, University Bonn, Bonn, Germany
| | - Isabelle Godin
- Gustave Roussy, INSERM U1170, Université Paris-Saclay, Villejuif, France
| | - Peter Wieghofer
- Institute of Neuropathology, University of Freiburg, Freiburg, Germany
| | | | - Thomas Ulas
- Genomics and Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany
| | | | - Frank Rosenbauer
- Institute of Molecular Tumor Biology, University of Muenster, Muenster, Germany
| | - Percy A Knolle
- Institute of Molecular Immunology, Technische Universität München, Munich, Germany
| | - Mathias Heikenwalder
- Institute of Virology, Technische Universität München/Helmholtz-Zentrum Munich, Munich, Germany Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Joachim L Schultze
- Genomics and Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany Platform for Single Cell Genomics and Epigenomics, German Center for Neurodegenerative Diseases, University of Bonn, Bonn, Germany
| | - Marco Prinz
- Institute of Neuropathology, University of Freiburg, Freiburg, Germany BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg, Germany
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293
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Abstract
The classical model of immunity posits that the immune system reacts to pathogens and injury and restores homeostasis. Indeed, a century of research has uncovered the means and mechanisms by which the immune system recognizes danger and regulates its own activity. However, this classical model does not fully explain complex phenomena, such as tolerance, allergy, the increased prevalence of inflammatory pathologies in industrialized nations and immunity to multiple infections. In this Essay, I propose a model of immunity that is based on equilibrium, in which the healthy immune system is always active and in a state of dynamic equilibrium between antagonistic types of response. This equilibrium is regulated both by the internal milieu and by the microbial environment. As a result, alteration of the internal milieu or microbial environment leads to immune disequilibrium, which determines tolerance, protective immunity and inflammatory pathology.
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Affiliation(s)
- Gérard Eberl
- Institut Pasteur, Microenvironment and Immunity Unit, 75724 Paris, France, and the Institut National de la Santé et de la Recherche Médicale (INSERM) U1224, 75724 Paris, France
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294
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Therapeutic effect of JAK1/2 blockade on the manifestations of hemophagocytic lymphohistiocytosis in mice. Blood 2016; 128:60-71. [DOI: 10.1182/blood-2016-02-700013] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 05/10/2016] [Indexed: 12/14/2022] Open
Abstract
Key Points
Treatment with clinical dose of JAK1/2 inhibitor (ruxolitinib) countered manifestations of HLH in 2 cytotoxicity-impaired murine models. JAK1/2 inhibitor therapy in mice is effective on survival, cytopenia, inflammatory syndrome, central nervous system involvement, and liver tissue repair.
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295
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Kummer A, Nishanth G, Koschel J, Klawonn F, Schlüter D, Jänsch L. Listeriosis downregulates hepatic cytochrome P450 enzymes in sublethal murine infection. Proteomics Clin Appl 2016; 10:1025-1035. [PMID: 27273978 DOI: 10.1002/prca.201600030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 04/11/2016] [Accepted: 06/01/2016] [Indexed: 11/08/2022]
Abstract
PURPOSE Listeria monocytogenes (Lm) can cross the intestinal barrier in humans and then disseminates into different organs. Invasion of the liver occurs even in sublethal infections, however, knowledge of affected physiological processes is scarce. This study employed a sublethal murine infection model to investigate liver responses systematically by proteomics. EXPERIMENTAL DESIGN Liver samples from three stages of the sublethal infection covering the initial invasion, the peak of infection, and the clearance phase (1, 3, 9 days postinoculation) were analyzed in comparison to samples from noninfected mice. Apart from flow cytometry and RT-PCRs for immune status control, liver responses were analyzed by quantitative peptide sequencing (HPLC-Orbitrap Fusion) using 4-plex iTRAQ-labeling. RESULTS Accurate MS characterized about 3600 proteins and statistics revealed 15% of the hepatic proteome as regulated. Immunological data as well as protein regulation dynamics strongly indicate stage-specific hepatic responses in sublethal infections. Most notably, this study detected a comprehensive deregulation of drug metabolizing enzymes at all stages, including 25 components of the cytochrome P450 system. CONCLUSIONS AND CLINICAL RELEVANCE Sublethal Lm infection deregulates hepatic drug metabolizing pathways. This finding indicates the need to monitor drug administration along Lm infections, especially in all patients needing constant medication.
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Affiliation(s)
- Anne Kummer
- Cellular Proteomics, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Gopala Nishanth
- Otto-von-Guericke University, Magdeburg, Germany.,Organ-specific Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | | | - Frank Klawonn
- Cellular Proteomics, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Department of Computer Science, Ostfalia University of Applied Sciences, Wolfenbüttel, Germany
| | - Dirk Schlüter
- Otto-von-Guericke University, Magdeburg, Germany.,Organ-specific Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Lothar Jänsch
- Cellular Proteomics, Helmholtz Centre for Infection Research, Braunschweig, Germany.
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296
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Eguíluz-Gracia I, Schultz HHL, Sikkeland LIB, Danilova E, Holm AM, Pronk CJH, Agace WW, Iversen M, Andersen C, Jahnsen FL, Baekkevold ES. Long-term persistence of human donor alveolar macrophages in lung transplant recipients. Thorax 2016; 71:1006-1011. [DOI: 10.1136/thoraxjnl-2016-208292] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 05/26/2016] [Indexed: 12/23/2022]
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297
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Liu Z, Niu D, Zhang J, Zhang W, Yao Y, Li P, Gong J. Amphiphilic core-shell nanoparticles containing dense polyethyleneimine shells for efficient delivery of microRNA to Kupffer cells. Int J Nanomedicine 2016; 11:2785-97. [PMID: 27366061 PMCID: PMC4913979 DOI: 10.2147/ijn.s101251] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Efficient and targeted delivery approach to transfer exogenous genes into macrophages is still a great challenge. Current gene delivery methods often result in low cellular uptake efficiency in vivo in some types of cells, especially for the Kupffer cells (KCs). In this article, we demonstrate that amphiphilic core-shell nanoparticles (NPs) consisting of well-defined hydrophobic poly(methyl methacrylate) (PMMA) cores and branched polyethyleneimine (PEI) shells (denoted as PEI@PMMA NPs) are efficient nanocarriers to deliver microRNA (miRNA)-loaded plasmid to the KCs. Average hydrodynamic diameter of PEI@ PMMA NPs was 279 nm with a narrow size distribution. The NPs also possessed positive surface charges up to +30 mV in water, thus enabling effective condensation of negatively charged plasmid DNA. Gel electrophoresis assay showed that the resultant PEI@PMMA NPs were able to completely condense miRNA plasmid at a weight ratio of 25:1 (N/P ratio equal to 45:1). The Cell Counting Kit-8 assay and flow cytometry results showed that the PEI@PMMA/miRNA NPs displayed low cytotoxicity and cell apoptosis activity against the KCs. The maximum cell transfection efficiency reached 34.7% after 48 hours, which is much higher than that obtained by using the commercial Lipofectamine™ 2000 (1.7%). Bio-transmission electron microscope observation revealed that the PEI@PMMA NPs were mainly distributed in the cytoplasm of the KCs. Furthermore, when compared to the control groups, the protein expression of target nuclear factor κB P65 was considerably inhibited (P<0.05) both in vitro and in vivo. These results demonstrate that the PEI@PMMA NPs with a unique amphiphilic core-shell nanostructure are promising nanocarriers for delivering miRNA plasmid to KCs.
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Affiliation(s)
- Zuojin Liu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Dechao Niu
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People's Republic of China; Lab of Low-Dimensional Materials Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Junyong Zhang
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Wenfeng Zhang
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yuan Yao
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People's Republic of China
| | - Pei Li
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People's Republic of China
| | - Jianping Gong
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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298
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Demetris AJ, Bellamy COC, Gandhi CR, Prost S, Nakanuma Y, Stolz DB. Functional Immune Anatomy of the Liver-As an Allograft. Am J Transplant 2016; 16:1653-80. [PMID: 26848550 DOI: 10.1111/ajt.13749] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 01/25/2023]
Abstract
The liver is an immunoregulatory organ in which a tolerogenic microenvironment mitigates the relative "strength" of local immune responses. Paradoxically, necro-inflammatory diseases create the need for most liver transplants. Treatment of hepatitis B virus, hepatitis C virus, and acute T cell-mediated rejection have redirected focus on long-term allograft structural integrity. Understanding of insults should enable decades of morbidity-free survival after liver replacement because of these tolerogenic properties. Studies of long-term survivors show low-grade chronic inflammatory, fibrotic, and microvascular lesions, likely related to some combination of environment insults (i.e. abnormal physiology), donor-specific antibodies, and T cell-mediated immunity. The resultant conundrum is familiar in transplantation: adequate immunosuppression produces chronic toxicities, while lightened immunosuppression leads to sensitization, immunological injury, and structural deterioration. The "balance" is more favorable for liver than other solid organ allografts. This occurs because of unique hepatic immune physiology and provides unintended benefits for allografts by modulating various afferent and efferent limbs of allogenic immune responses. This review is intended to provide a better understanding of liver immune microanatomy and physiology and thereby (a) the potential structural consequences of low-level, including allo-antibody-mediated injury; and (b) how liver allografts modulate immune reactions. Special attention is given to the microvasculature and hepatic mononuclear phagocytic system.
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Affiliation(s)
- A J Demetris
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - C O C Bellamy
- Department of Pathology, University of Edinburgh, Edinburgh, Scotland, UK
| | - C R Gandhi
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center and Department of Surgery, University of Cincinnati, Cincinnati, OH
| | - S Prost
- Department of Pathology, University of Edinburgh, Edinburgh, Scotland, UK
| | - Y Nakanuma
- Department of Diagnostic Pathology, Shizuoka Cancer Center, Shizuoka, Japan
| | - D B Stolz
- Center for Biologic Imaging, Cell Biology, University of Pittsburgh, Pittsburgh, PA
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299
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Blériot C, Lecuit M. The interplay between regulated necrosis and bacterial infection. Cell Mol Life Sci 2016; 73:2369-78. [PMID: 27048818 PMCID: PMC11108542 DOI: 10.1007/s00018-016-2206-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 03/18/2016] [Indexed: 01/19/2023]
Abstract
Necrosis has long been considered as a passive event resulting from a cell extrinsic stimulus, such as pathogen infection. Recent advances have refined this view and it is now well established that necrosis is tightly regulated at the cell level. Regulated necrosis can occur in the context of host-pathogen interactions, and can either participate in the control of infection or favor it. Here, we review the two main pathways implicated so far in bacteria-associated regulated necrosis: caspase 1-dependent pyroptosis and RIPK1/RIPK3-dependent necroptosis. We present how these pathways are modulated in the context of infection by a series of model bacterial pathogens.
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Affiliation(s)
- Camille Blériot
- Institut Pasteur, Biology of Infection Unit, 75015, Paris, France
- U1117, Inserm, 75015, Paris, France
| | - Marc Lecuit
- Institut Pasteur, Biology of Infection Unit, 75015, Paris, France.
- U1117, Inserm, 75015, Paris, France.
- French National Reference Center and World Health Organization Collaborating Centre on Listeria, Institut Pasteur, 75015, Paris, France.
- Paris Descartes University, Sorbonne Paris Cité, Institut Imagine, Division of Infectious Diseases and Tropical Medicine, Necker-Pasteur Centre for Infectiology, Necker-Enfants Malades University Hospital, 75015, Paris, France.
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300
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Yamanishi Y, Karasuyama H. Basophil-derived IL-4 plays versatile roles in immunity. Semin Immunopathol 2016; 38:615-22. [PMID: 27160724 DOI: 10.1007/s00281-016-0568-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 04/28/2016] [Indexed: 02/06/2023]
Abstract
Recent studies demonstrated that basophils play crucial and non-redundant roles in the immune system, in spite of the fact that they are the rarest granulocytes and represent less than 1 % of peripheral blood leukocytes. In response to various stimuli, basophils release effector molecules stored in their cytoplasmic granules, including chemical mediators and proteases, and also secrete cytokines and chemokines. In this review, we will focus on the physiological and pathological roles of basophil-derived IL-4. Basophils can readily produce large quantities of IL-4 and are therefore the important source of IL-4. Basophil-derived IL-4 has been shown to regulate other immune cells, including T cells, B cells, group 2 innate lymphoid cells, monocytes, and macrophages. It also acts on non-hematopoietic cells such as fibroblasts and endothelial cells. Those cells stimulated with basophil-derived IL-4 contribute to the positive or negative regulation of a variety of immune responses in health and disease, including protection against parasitic and bacterial infections, allergy, and autoimmune diseases. Thus, basophil-derived IL-4 plays versatile roles in immunity.
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Affiliation(s)
- Yoshinori Yamanishi
- Department of Immune Regulation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8519, Japan.
| | - Hajime Karasuyama
- Department of Immune Regulation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8519, Japan
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