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Farmer A, Harris PJ. A mathematical model of cell movement and clustering due to chemotaxis. J Theor Biol 2023; 575:111646. [PMID: 37852358 DOI: 10.1016/j.jtbi.2023.111646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 08/10/2023] [Accepted: 10/12/2023] [Indexed: 10/20/2023]
Abstract
This paper presents a numerical method for modelling cell migration and aggregation due to chemotaxis where the cell is attracted towards the direction in which the concentration of a chemical signal is increasing. In the model presented here, each cell is represented by a system of springs connected together at node points on the cell's membrane and on the boundary of the cell's nucleus. The nodes located on a cell's membrane are subject to a force which is proportional to the gradient of the concentration of the chemical signal which mimics the behaviour of the chemical receptors in the cell's membrane. In particular, the model developed here will consider what happens when two (or more) cells collide and how their membranes connect to each other to form clusters of cells. The methods described in this paper will be illustrated with a number of typical examples simulating cells moving in response to a chemical signal and how they combine to form clusters.
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Affiliation(s)
- Adam Farmer
- School of Architecture, Technology and Engineering, University of Brighton, Brighton, UK; Centre for Regenerative Medicine and Devices, University of Brighton, Brighton, UK
| | - Paul J Harris
- School of Architecture, Technology and Engineering, University of Brighton, Brighton, UK; Centre for Regenerative Medicine and Devices, University of Brighton, Brighton, UK.
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2
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Giblin SP, Ranawana S, Hassibi S, Birchenough HL, Mincham KT, Snelgrove RJ, Tsuchiya T, Kanegasaki S, Dyer D, Pease JE. CXCL17 binds efficaciously to glycosaminoglycans with the potential to modulate chemokine signaling. Front Immunol 2023; 14:1254697. [PMID: 37942327 PMCID: PMC10628517 DOI: 10.3389/fimmu.2023.1254697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 10/09/2023] [Indexed: 11/10/2023] Open
Abstract
Introduction CXCL17 is a mucosally secreted protein, and the most recently identified human chemokine, an assignment based on protein fold prediction and chemotactic activity for leukocytes. However, these credentials have been the subject of much recent discussion and no experimental evidence has been presented regarding the definitive structure of CXCL17. In this study, we evaluated the structural and chemoattractant credentials of CXCL17 to better characterize this molecule, and gain deeper insights into its functional role as a glycosaminoglycan (GAG) binding protein. Methods In the absence of structural information, in silico modeling techniques assessed the likelihood of CXCL17 adopting a chemokine fold. Recombinant CXCL17 was synthesized in mammalian and prokaryotic systems. Modified Boyden chamber and real-time chemotaxis assays assessed the ability of CXCL17 to promote chemotaxis of murine splenocytes, human neutrophils, and CXCR1 transfectants. The efficacy of CXCL17 binding to GAGs was quantified with solid-phase assays and bio-layer interferometry techniques. Results All modeling efforts failed to support classification of CXCL17 as a chemokine based on its predicted conformation. Recombinant CXCL17 was observed to dimerize as a function of concentration, a characteristic of several chemokines. Contrary to a previous report, CXCL17 was not chemotactic for murine splenocytes, although it was a low-potency chemoattractant for human neutrophils at micromolar concentrations, several orders of magnitude higher than those required for CXCL8. As anticipated owing to its highly basic nature, CXCL17 bound to GAGs robustly, with key C-terminal motifs implicated in this process. While inactive via CXCR1, CXCL17 was found to inhibit CXCR1-mediated chemotaxis of transfectants to CXCL8 in a dose-dependent manner. Discussion In summary, despite finding little evidence for chemokine-like structure and function, CXCL17 readily bound GAGs, and could modulate chemotactic responses to another chemokine in vitro. We postulate that such modulation is a consequence of superior GAG binding, and that C-terminal fragments of CXCL17 may serve as prototypic inhibitors of chemokine function.
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Affiliation(s)
- Sean P. Giblin
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Sashini Ranawana
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Shyreen Hassibi
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Holly L. Birchenough
- Wellcome Centre for Cell-Matrix Research, Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Kyle T. Mincham
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Robert J. Snelgrove
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Tomoko Tsuchiya
- Research Institute, National Center for Global Health and Medicine, Shinjuku-ku, Japan
| | | | - Douglas Dyer
- Wellcome Centre for Cell-Matrix Research, Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
- Geoffrey Jefferson Brain Research Centre, Manchester Academic Health Science Centre, Northern Care Alliance NHS Group, University of Manchester, Manchester, United Kingdom
| | - James E. Pease
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
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Okamoto S, Miyano K, Choshi T, Sugisawa N, Nishiyama T, Kotouge R, Yamamura M, Sakaguchi M, Kinoshita R, Tomonobu N, Katase N, Sasaki K, Nishina S, Hino K, Kurose K, Oka M, Kubota H, Ueno T, Hirai T, Fujiwara H, Kawai C, Itadani M, Morihara A, Matsushima K, Kanegasaki S, Hoffman RM, Yamauchi A, Kuribayashi F. Inhibition of pancreatic cancer-cell growth and metastasis in vivo by a pyrazole compound characterized as a cell-migration inhibitor by an in vitro chemotaxis assay. Biomed Pharmacother 2022; 155:113733. [DOI: 10.1016/j.biopha.2022.113733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/05/2022] [Accepted: 09/19/2022] [Indexed: 11/02/2022] Open
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Okamoto S, Miyano K, Kitakaze K, Kato H, Yamauchi A, Kajikawa M, Itsumi M, Kawai C, Kuribayashi F. Coculture in vitro with endothelial cells induces cytarabine resistance of acute myeloid leukemia cells in a VEGF-A/VEGFR-2 signaling-independent manner. Biochem Biophys Res Commun 2022; 587:78-84. [PMID: 34872003 DOI: 10.1016/j.bbrc.2021.11.090] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/16/2021] [Accepted: 11/25/2021] [Indexed: 12/28/2022]
Abstract
An interaction between acute myeloid leukemia (AML) cells and endothelial cells in the bone marrow seems to play a critical role in chemosensitivity on leukemia treatment. The endothelial niche reportedly enhances the paracrine action of the soluble secretory proteins responsible for chemoresistance in a vascular endothelial growth factor A (VEGF-A)/VEGF receptor 2 (VEGFR-2) signaling pathway-dependent manner. To further investigate the contribution of VEGF-A/VEGFR-2 signaling to the chemoresistance of AML cells, a biochemical assay system in which the AML cells were cocultured with human endothelial EA.hy926 cells in a monolayer was developed. By coculture with EA.hy926 cells, this study revealed that the AML cells resisted apoptosis induced by the anticancer drug cytarabine. SU4312, a VEGFR-2 inhibitor, attenuated VEGFR-2 phosphorylation and VEGF-A/VEGFR-2 signaling-dependent endothelial cell migration; thus, this inhibitor was observed to block VEGF-A/VEGFR-2 signaling. Interestingly, this inhibitor did not reverse the chemoresistance. When VEGFR-2 was knocked out in EA.hy926 cells using the CRISPR-Cas9 system, the cytarabine-induced apoptosis of AML cells did not significantly change compared with that of wild-type cells. Thus, coculture-induced chemoresistance appears to be independent of VEGF-A/VEGFR-2 signaling. When the transwell, a coculturing device, separated the AML cells from the EA.hy926 cells in a monolayer, the coculture-induced chemoresistance was inhibited. Given that the migration of VEGF-A/VEGFR-2 signaling-dependent endothelial cells is necessary for the endothelial niche formation in the bone marrow, VEGF-A/VEGFR-2 signaling contributes to chemoresistance by mediating the niche formation process, but not to the chemoresistance of AML cells in the niche.
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Affiliation(s)
- Shuichiro Okamoto
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan; Shuichiro Okamoto, Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan.
| | - Kei Miyano
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan; Kei Miyano, Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan.
| | - Keisuke Kitakaze
- Department of Pharmacology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
| | - Hitomi Kato
- Second Year Medical Student in Fiscal Year of 2019, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
| | - Akira Yamauchi
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
| | - Mizuho Kajikawa
- Laboratory of Microbiology, Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo, 194-8543, Japan
| | - Momoe Itsumi
- Department of Oral Microbiology and Immunology Showa University School of Dentistry1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan
| | - Chikage Kawai
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
| | - Futoshi Kuribayashi
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
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Li X, Hanafusa K, Kage M, Yokoyama N, Nakayama H, Hotta T, Oshima E, Kano K, Matsuo I, Nagatsuka Y, Takamori K, Ogawa H, Hirabayashi Y, Iwabuchi K. Lysophosphatidylglucoside is a GPR55 -mediated chemotactic molecule for human monocytes and macrophages. Biochem Biophys Res Commun 2021; 569:86-92. [PMID: 34237432 DOI: 10.1016/j.bbrc.2021.06.090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 06/27/2021] [Indexed: 11/17/2022]
Abstract
Neutrophils undergo spontaneous apoptosis within 24-48 h after leaving bone marrow. Apoptotic neutrophils are subsequently phagocytosed and cleared by macrophages, thereby maintaining neutrophil homeostasis. Previous studies have demonstrated involvement of lysophosphatidylglucoside (lysoPtdGlc), a degradation product of PtdGlc, in modality-specific repulsive guidance of spinal sensory axons, via its specific receptor GPR55. In the present study, using human monocytic cell line THP-1 as a model, we demonstrated that lysoPtdGlc induces monocyte/macrophage migration with typical bell-haped curve and a peak at concentration 10-9 M. Lysophosphatidylinositol (lysoPtdIns), a known GPR55 ligand, induced migration at higher concentration (10-7 M). LysoPtdGlc-treated cells had a polarized shape, whereas lysoPtdIns-treated cells had a spherical shape. In EZ-TAXIScan (chemotaxis) assay, lysoPtdGlc induced chemotactic migration activity of THP-1 cells, while lysoPtdIns induced random migration activity. GPR55 antagonist ML193 inhibited lysoPtdGlc-induced THP-1 cell migration, whereas lysoPtdIns-induced migration was inhibited by CB2-receptor inverse agonist. SiRNA experiments showed that GPR55 mediated lysoPtdGlc-induced migration, while lysoPtdIns-induced migration was mediated by CB2 receptor. Our findings, taken together, suggest that lysoPtdGlc functions as a chemotactic molecule for human monocytes/macrophages via GPR55 receptor, while lysoPtdIns induces random migration activity via CB2 receptor.
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Affiliation(s)
- Xiaojia Li
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
| | - Kei Hanafusa
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
| | - Madoka Kage
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
| | - Noriko Yokoyama
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
| | - Hitoshi Nakayama
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; Infection Control Nursing, Juntendo University Graduate School of Health Care and Nursing, Urayasu, Chiba 279-0023, Japan
| | - Tomomi Hotta
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
| | - Eriko Oshima
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
| | - Koki Kano
- Division of Molecular Science, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Ichiro Matsuo
- Division of Molecular Science, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Yasuko Nagatsuka
- Cellular Informatics Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kenji Takamori
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
| | - Hideoki Ogawa
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan
| | - Yoshio Hirabayashi
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; Cellular Informatics Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kazuhisa Iwabuchi
- Institute for Environmental and Gender-Specific Medicine, Juntendo University Graduate School of Medicine, Urayasu, Chiba 279-0021, Japan; Infection Control Nursing, Juntendo University Graduate School of Health Care and Nursing, Urayasu, Chiba 279-0023, Japan.
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Shibaguchi H, Yasutaka Y, Futagami K. Novel method to analyze cell kinetics for the rapid diagnosis and determination of the causative agent in allergy. PLoS One 2021; 16:e0246125. [PMID: 33606707 PMCID: PMC7895410 DOI: 10.1371/journal.pone.0246125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 12/23/2020] [Indexed: 11/28/2022] Open
Abstract
Drug-induced allergy (DIA), an unexpectedly triggered side effect of drugs used for therapeutic purposes, is a serious clinical issue that needs to be resolved because it interrupts the treatment of the primary disease. Since conventional allergy testing is insufficient to accurately predict the occurrence of DIA or to determine the drugs causing it, the development of diagnostic and predictive tools for allergic reactions is important. We demonstrated a novel method, termed high-sensitive allergy test (HiSAT), for the rapid diagnosis of allergy (within 1 hr; with true-positive diagnosis rates of 89% and 9% for patients with and without allergy-like symptoms, respectively). HiSAT analyzes the cell kinetics as an index against chemotactic factors in a patient’s serum, as different from the diagnosis using conventional methods. Once allergy has occurred, HiSAT can be used to determine the causative medicine using culture supernatants incubated with the subject’s lymphocytes and the test allergen. This test is more efficient (60%) than the lymphocyte transformation test (20%). Furthermore, in HiSAT, cell mobility significantly increases in a dose-dependent manner against supernatant incubated with lymphocytes from a subject with pollinosis collected at a time when the subject is without allergic symptoms and the antigen. The result demonstraed that HiSAT might be a promising method to rapidly diagnose DIA or to determine with high accuracy the antigen causing allergy.
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Affiliation(s)
- Hirotomo Shibaguchi
- Department of Biochemistry, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
- Department of Hospital Pharmacy, Fukuoka University Hospital, Fukuoka, Japan
- * E-mail:
| | - Yuki Yasutaka
- Department of Hospital Pharmacy, Fukuoka University Hospital, Fukuoka, Japan
- Department of Health Care Management, Faculty of Pharmaceutical Science, Fukuoka University, Fukuoka, Japan
| | - Koujiro Futagami
- Department of Hospital Pharmacy, Fukuoka University Hospital, Fukuoka, Japan
- Department of Health Care Management, Faculty of Pharmaceutical Science, Fukuoka University, Fukuoka, Japan
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7
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Pan M, Jin T. Imaging GPCR-Mediated Signal Events Leading to Chemotaxis and Phagocytosis. Methods Mol Biol 2021; 2304:207-220. [PMID: 34028719 DOI: 10.1007/978-1-0716-1402-0_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Eukaryotic phagocytes locate microorganisms via chemotaxis and consume them through phagocytosis. The social amoeba Dictyostelium discoideum is a stereotypical phagocyte and a well-established model to study both processes. Recent studies show that a G-protein-coupled receptor (fAR1) mediate a signaling network to control reorganization of the actin cytoskeleton leading both the directional cell movement and the engulfment of bacteria. Many live cell imaging methods have been developed and applied to monitor these signaling events. In this chapter, we will introduce how to measure GPCR-mediated signaling events for cell migration and phagocytosis in Dictyostelium.
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Affiliation(s)
- Miao Pan
- Chemotaxis Signal Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD, USA
| | - Tian Jin
- Chemotaxis Signal Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Disease, NIH, Rockville, MD, USA.
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8
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Miyano K, Okamoto S, Yamauchi A, Kawai C, Kajikawa M, Kiyohara T, Tamura M, Taura M, Kuribayashi F. The NADPH oxidase NOX4 promotes the directed migration of endothelial cells by stabilizing vascular endothelial growth factor receptor 2 protein. J Biol Chem 2020; 295:11877-11890. [PMID: 32616654 DOI: 10.1074/jbc.ra120.014723] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/26/2020] [Indexed: 11/06/2022] Open
Abstract
Directed migration of endothelial cells (ECs) is an important process during both physiological and pathological angiogenesis. The binding of vascular endothelial growth factor (VEGF) to VEGF receptor-2 (VEGFR-2) on the EC surface is necessary for directed migration of these cells. Here, we used TAXIScan, an optically accessible real-time horizontal cell dynamics assay approach, and demonstrate that reactive oxygen species (ROS)-producing NADPH oxidase 4 (NOX4), which is abundantly expressed in ECs, mediates VEGF/VEGFR-2-dependent directed migration. We noted that a continuous supply of endoplasmic reticulum (ER)-retained VEGFR-2 to the plasma membrane is required to maintain VEGFR-2 at the cell surface. siRNA-mediated NOX4 silencing decreased the ER-retained form of VEGFR-2, resulting in decreased cell surface expression levels of the receptor. We also found that ER-localized NOX4 interacts with ER-retained VEGFR-2 and thereby stabilizes this ER-retained form at the protein level in the ER. We conclude that NOX4 contributes to the directed migration of ECs by maintaining VEGFR-2 levels at their surface.
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Affiliation(s)
- Kei Miyano
- Department of Biochemistry, Kawasaki Medical School, Okayama, Japan
| | | | - Akira Yamauchi
- Department of Biochemistry, Kawasaki Medical School, Okayama, Japan
| | - Chikage Kawai
- Department of Biochemistry, Kawasaki Medical School, Okayama, Japan
| | - Mizuho Kajikawa
- Laboratory of Microbiology, Showa Pharmaceutical University, Tokyo, Japan
| | - Takuya Kiyohara
- Department of Cerebrovascular Disease and Neurology, Hakujyuji Hospital, Fukuoka, Japan
| | - Minoru Tamura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, Ehime, Japan
| | - Masahiko Taura
- Department of Otorhinolaryngology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
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9
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Terashima Y, Toda E, Itakura M, Otsuji M, Yoshinaga S, Okumura K, Shand FHW, Komohara Y, Takeda M, Kokubo K, Chen MC, Yokoi S, Rokutan H, Kofuku Y, Ohnishi K, Ohira M, Iizasa T, Nakano H, Okabe T, Kojima H, Shimizu A, Kanegasaki S, Zhang MR, Shimada I, Nagase H, Terasawa H, Matsushima K. Targeting FROUNT with disulfiram suppresses macrophage accumulation and its tumor-promoting properties. Nat Commun 2020; 11:609. [PMID: 32001710 PMCID: PMC6992764 DOI: 10.1038/s41467-020-14338-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 12/20/2019] [Indexed: 12/15/2022] Open
Abstract
Tumor-associated macrophages affect tumor progression and resistance to immune checkpoint therapy. Here, we identify the chemokine signal regulator FROUNT as a target to control tumor-associated macrophages. The low level FROUNT expression in patients with cancer correlates with better clinical outcomes. Frount-deficiency markedly reduces tumor progression and decreases macrophage tumor-promoting activity. FROUNT is highly expressed in macrophages, and its myeloid-specific deletion impairs tumor growth. Further, the anti-alcoholism drug disulfiram (DSF) acts as a potent inhibitor of FROUNT. DSF interferes with FROUNT-chemokine receptor interactions via direct binding to a specific site of the chemokine receptor-binding domain of FROUNT, leading to inhibition of macrophage responses. DSF monotherapy reduces tumor progression and decreases macrophage tumor-promoting activity, as seen in the case of Frount-deficiency. Moreover, co-treatment with DSF and an immune checkpoint antibody synergistically inhibits tumor growth. Thus, inhibition of FROUNT by DSF represents a promising strategy for macrophage-targeted cancer therapy. The cytoplasmic protein FROUNT can bind to chemokine receptors and enhance chemokine signalling. Here, the authors show that inhibiting FROUNT in macrophages either by knockdown of the gene or using the anti-alcoholism drug disulfiram, results in a reduction in tumour growth.
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Affiliation(s)
- Yuya Terashima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan. .,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan. .,Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.
| | - Etsuko Toda
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Department of Analytic Human Pathology, Nippon Medical School, Tokyo, 113-8602, Japan.,Department of Analytic Human Pathology, Nippon Medical School, Tokyo, 113-8602, Japan
| | - Meiji Itakura
- Department of Thoracic Disease, Chiba Cancer Center, Chiba, 260-8717, Japan.,Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan.,Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan
| | - Mikiya Otsuji
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Department of Anesthesiology, Tokyo Teishin Hospital, Tokyo, 102-8798, Japan.,Department of Anesthesiology, Tokyo Teishin Hospital, Tokyo, 102-8798, Japan
| | - Sosuke Yoshinaga
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | | | - Francis H W Shand
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yoshihiro Komohara
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, 860-8556, Japan
| | - Mitsuhiro Takeda
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | - Kana Kokubo
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan
| | - Ming-Chen Chen
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan
| | - Sana Yokoi
- Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan
| | - Hirofumi Rokutan
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yutaka Kofuku
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Koji Ohnishi
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, 860-8556, Japan
| | - Miki Ohira
- Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan
| | - Toshihiko Iizasa
- Department of Thoracic Disease, Chiba Cancer Center, Chiba, 260-8717, Japan
| | - Hirofumi Nakano
- Drug Discovery Initiative, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Takayoshi Okabe
- Drug Discovery Initiative, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Hirotatsu Kojima
- Drug Discovery Initiative, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Akira Shimizu
- Department of Analytic Human Pathology, Nippon Medical School, Tokyo, 113-8602, Japan
| | - Shiro Kanegasaki
- Research Institute, National Center for Global Health and Medicine, Tokyo, 162-8655, Japan
| | - Ming-Rong Zhang
- Department of Radiopharmaceutics Development, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan
| | - Ichio Shimada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Hiroki Nagase
- Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan
| | - Hiroaki Terasawa
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan
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10
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Reduction of Real-Time Imaging of M1 Macrophage Chemotaxis toward Damaged Muscle Cells is PI3K-Dependent. Antioxidants (Basel) 2018; 7:antiox7100138. [PMID: 30297636 PMCID: PMC6210562 DOI: 10.3390/antiox7100138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/25/2018] [Accepted: 10/04/2018] [Indexed: 11/16/2022] Open
Abstract
Macrophages migrate and invade into damaged muscle rapidly and are important for muscle repair and subsequent regeneration. The exact cellular and biological events that cause macrophage migration toward injured muscle are not completely understood. In this study, the effect of macrophage differentiation on the chemotactic capability to invade local damaged muscle was investigated using an in vitro model of muscle injury. We used C2C12 cell myoblasts and J774 cell macrophages, and the "killed-C2C12" cells were combined with live C2C12 cells as a partially damaged muscle model. The cultured J774 cells, with or without lipopolysaccharide (LPS), were treated with Ly294002 (Ly), which is an inhibitor of phosphoinositide 3-kinase (PI3K). In order to evaluate the polarization effect of LPS stimulation on J774 cells, expression of cell surface Toll-like receptor 4 (TLR4), CD11c and CCR2, and expression of F-actin intensity, were analyzed by flow cytometry. The real-time horizontal chemotaxis assay of J774 cells was tested using the TAXIScan device. The expressions of TLR4, CD11c, and F-actin intensity in LPS-treated cells were significantly higher than those in Ctrl cells. In LPS-treated cells, the chemotactic activity toward damaged muscle cells completely disappeared. Moreover, the reduced chemotaxis depended far more on directionality than velocity. However, Ly treatment reversed the reduced chemotactic activity of the LPS-treated cells. In addition, cell-adhesion and F-actin intensity, but not CCR2 expression, in LPS-treated cells, was significantly reduced by Ly treatment. Taken together, our results suggest that the PI3K/Akt activation state drives migration behavior towards damaged muscle cells.
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Harris PJ. Modelling the motion of clusters of cells in a viscous fluid using the boundary integral method. Math Biosci 2018; 306:145-151. [PMID: 30267736 DOI: 10.1016/j.mbs.2018.09.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 09/21/2018] [Accepted: 09/25/2018] [Indexed: 11/18/2022]
Abstract
In experiments clusters of cells are often observed to move in response to a chemical signal which is present in the fluid surrounding the cells. This process is known as chemotaxis. This paper presents a method for modelling the motion of clusters of cells moving through a viscous fluid in response to a known chemical signal using a boundary integral formulation of the governing equations rather than the more usual differential equation formulation. The numerical results presented in this paper show that the boundary integral method can be used to simulate the motion of cell clusters through the fluid. The results of the simulations are compared to some experimental observations of cell and cluster motion.
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Affiliation(s)
- Paul J Harris
- School of Computing, Engineering and Mathematics, University of Brighton, Lewes Road, Brighton, UK.
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CXCL4/Platelet Factor 4 is an agonist of CCR1 and drives human monocyte migration. Sci Rep 2018; 8:9466. [PMID: 29930254 PMCID: PMC6013489 DOI: 10.1038/s41598-018-27710-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 06/05/2018] [Indexed: 02/07/2023] Open
Abstract
Activated platelets release micromolar concentrations of the chemokine CXCL4/Platelet Factor-4. Deposition of CXCL4 onto the vascular endothelium is involved in atherosclerosis, facilitating monocyte arrest and recruitment by an as yet, unidentified receptor. Here, we demonstrate that CXCL4 drives chemotaxis of the monocytic cell line THP-1. Migration and intracellular calcium responses induced by CXCL4 were pertussis toxin-sensitive, implicating a GPCR in signal transduction. Cell treatment with chondroitinase ABC ablated migration, suggesting that cis presentation of CXCL4 by cell surface glycosaminoglycans to a GPCR is required. Although CXCR3 has been previously described as a CXCL4 receptor, THP-1 cells were unresponsive to CXCR3 ligands and CXCL4-induced migration was insensitive to a CXCR3 antagonist, suggesting that an alternative receptor is involved. Interrogating CC-class chemokine receptor transfectants, we unexpectedly found that CXCL4 could induce the migration of CCR1-expressing cells and also induce CCR1 endocytosis. Extending our findings to primary human monocytes, we observed that CXCL4 induced CCR1 endocytosis and could induce monocyte chemotaxis in a CCR1 antagonist-sensitive manner. Collectively, our data identify CCR1 as a previously elusive monocyte CXCL4 receptor and suggest that CCR1 may play a role in inflammation where the release of CXCL4 is implicated.
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Tsuchiya T, Shiraishi K, Nakagawa K, Kim JR, Kanegasaki S. Identification of the active portion of the CCL3 derivative reported to induce antitumor abscopal effect. Clin Transl Radiat Oncol 2018; 10:7-12. [PMID: 29928700 PMCID: PMC6008634 DOI: 10.1016/j.ctro.2018.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/19/2018] [Accepted: 02/20/2018] [Indexed: 01/04/2023] Open
Abstract
Injected HSP70 and a partial peptide of a CCL3 variant elicit tumor growth inhibition. The peptide also enhances tumor growth inhibition after local irradiation. The sequence of the peptide corresponds to the beta sheet region of the valiant. Chemotactic-inducing activity and tumor grow inhibition are independent phenomena. The results will help to open the way for therapeutic application of like peptides.
Background and purpose Intravenous administration of a single amino acid-substituted chemokine CCL3 derivative named eMIP elicits the abscopal effect (an effect distal to the target), after local irradiation at a tumor-bearing site. To distinguish the active portion of eMIP, we tested the antitumor activity of chemically synthesized partial peptides of eMIP. Synthetic peptide has various advantages in its clinical application. Material and methods Colon26 adenocarcinoma cells were implanted subcutaneously in the right and left flanks of mice. eMIP, CCL3 or any of synthesized peptides was administered intravenously, either after irradiating the right flank. The effect was evaluated by tumor-growth inhibition. Results Q/C peptide, a synthetic peptide of amino acids 22–51 of eMIP has no chemotaxis-inducing ability but yet enhanced tumor growth inhibition at the non-irradiated sites, recapitulating the effect of eMIP with local irradiation. Co-administration of this peptide and HSP70 also inhibited tumor growth. Conclusions Q/C peptide maps to the eMIP β-sheet: 3 adjacent anti-parallel strands connected by the β-hairpins, is the active portion of eMIP necessary for an immunomodulatory antitumor effect. This experimental reduction furthers our understanding of the underlying mechanism of the abscopal effect. The data will open the way for therapeutic application of like peptides.
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Affiliation(s)
- Tomoko Tsuchiya
- Research Center for Medical Science, Yeungnam University, Republic of Korea.,Central Lab, Effector Cell Institute Inc., Japan.,College of Medicine, Yeungnam University, Republic of Korea
| | - Kenshiro Shiraishi
- Department of Radiology, University Hospital, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Keiichi Nakagawa
- Department of Radiology, University Hospital, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Jae-Ryong Kim
- Research Center for Medical Science, Yeungnam University, Republic of Korea.,College of Medicine, Yeungnam University, Republic of Korea
| | - Shiro Kanegasaki
- Research Center for Medical Science, Yeungnam University, Republic of Korea.,Central Lab, Effector Cell Institute Inc., Japan.,College of Medicine, Yeungnam University, Republic of Korea
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14
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Harris PJ. A simple mathematical model of cell clustering by chemotaxis. Math Biosci 2017; 294:62-70. [PMID: 29042211 DOI: 10.1016/j.mbs.2017.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/12/2017] [Accepted: 10/10/2017] [Indexed: 10/18/2022]
Abstract
Chemotaxis is the process by which cells and clusters of cells follow chemical signals in order to combine and form larger clusters. The spreading of the chemical signal from any given cell can be modeled using the linear diffusion equation, and the standard equations of motion can be used to determine how a cell, or cluster of cells, moves in response to the chemical signal. The resulting differential equations for the cell locations are integrated through time using the fourth-order Runge-Kutta method. The effect which changing the initial concentration magnitude, diffusion constant and velocity damping parameter has on the shape of the final clusters of cells is investigated and discussed.
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Affiliation(s)
- Paul J Harris
- School of Computing, Engineering and Mathematics, University of Brighton, UK.
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15
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Yamauchi A, Yamamura M, Katase N, Itadani M, Okada N, Kobiki K, Nakamura M, Yamaguchi Y, Kuribayashi F. Evaluation of pancreatic cancer cell migration with multiple parameters in vitro by using an optical real-time cell mobility assay device. BMC Cancer 2017; 17:234. [PMID: 28359316 PMCID: PMC5374612 DOI: 10.1186/s12885-017-3218-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 03/22/2017] [Indexed: 11/26/2022] Open
Abstract
Background Migration of cancer cell correlates with distant metastasis and local invasion, which are good targets for cancer treatment. An optically accessible device “TAXIScan” was developed, which provides considerably more information regarding the cellular dynamics and less quantity of samples than do the existing methods. Here, we report the establishment of a system to analyze the nature of pancreatic cancer cells using TAXIScan and we evaluated lysophosphatidic acid (LPA)-elicited pancreatic cell migration. Methods Pancreatic cancer cell lines, BxPC3, PANC-1, AsPC1, and MIAPaCa-2, were analyzed for adhesion as well as migration towards LPA by TAXIScan using parameters such as velocity and directionality or for the number of migrated cells by the Boyden chamber methods. To confirm that the migration was initiated by LPA, the expression of LPA receptors and activation of intracellular signal transductions were examined by quantitative reverse transcriptase polymerase reaction and western blotting. Results Scaffold coating was necessary for the adhesion of pancreatic cancer cells, and collagen I and Matrigel were found to be good scaffolds. BxPC3 and PANC-1 cells clearly migrated towards the concentration gradient formed by injecting 1 μL LPA, which was abrogated by pre-treatment with LPA inhibitor, Ki16425 (IC50 for the directionality ≈ 1.86 μM). The LPA dependent migration was further confirmed by mRNA and protein expression of LPA receptors as well as phosphorylation of signaling molecules. LPA1 mRNA was highest among the 6 receptors, and LPA1, LPA2 and LPA3 proteins were detected in BxPC3 and PANC-1 cells. Phosphorylation of Akt (Thr308 and Ser473) and p42/44MAPK in BxPC3 and PANC-1 cells was observed after LPA stimulation, which was clearly inhibited by pre-treatment with a compound Ki16425. Conclusions We established a novel pancreatic cancer cell migration assay system using TAXIScan. This assay device provides multiple information on migrating cells simultaneously, such as their morphology, directionality, and velocity, with a small volume of sample and can be a powerful tool for analyzing the nature of cancer cells and for identifying new factors that affect cell functions. Electronic supplementary material The online version of this article (doi:10.1186/s12885-017-3218-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Akira Yamauchi
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan.
| | - Masahiro Yamamura
- Department of Clinical Oncology, Kawasaki Medical School, Okayama, Japan
| | - Naoki Katase
- Department of Molecular and Developmental Biology, Kawasaki Medical School, Okayama, Japan
| | - Masumi Itadani
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
| | - Naoko Okada
- Department of Clinical Oncology, Kawasaki Medical School, Okayama, Japan
| | - Kayoko Kobiki
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
| | - Masafumi Nakamura
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | - Futoshi Kuribayashi
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
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Maruyama N, Tansho-Nagakawa S, Miyazaki C, Shimomura K, Ono Y, Abe S. Inhibition of Neutrophil Adhesion and Antimicrobial Activity by Diluted Hydrosol Prepared from Rosa damascena. Biol Pharm Bull 2017; 40:161-168. [DOI: 10.1248/bpb.b16-00644] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Naho Maruyama
- Teikyo University Institute of Medical Mycology
- Department of Health and Dietetics, Faculty of Health and Medical Science, Teikyo Heisei University
| | | | - Chizuru Miyazaki
- Department of Microbiology and Immunology, Teikyo University School of Medicine
| | - Kazuyuki Shimomura
- Department of Sport and Medical Science, Faculty of Medical Technology, Teikyo University
| | - Yasuo Ono
- Department of Microbiology and Immunology, Teikyo University School of Medicine
| | - Shigeru Abe
- Teikyo University Institute of Medical Mycology
- Department of Sport and Medical Science, Faculty of Medical Technology, Teikyo University
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17
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Saito H, Honda K, Asaka C, Ueki S, Ishikawa K. Eosinophil chemotaxis assay in nasal polyps by using a novel optical device EZ-TAXIScan: Role of CC-chemokine receptor 3. Allergol Int 2016; 65:280-5. [PMID: 26874579 DOI: 10.1016/j.alit.2016.01.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/19/2015] [Accepted: 01/09/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The chemokine receptor, CC-chemokine receptor 3 (CCR3), and its major ligands, eotaxin, RANTES, and MCP-4, are involved in eosinophil chemotaxis. It is thought that CCR3 plays an important role in the recruitment and activation of eosinophils in nasal polyposis. We examined nasal polyp extract-induced eosinophil chemotaxis and the effect of a CCR3 antagonist using EZ-TAXIScan, a novel real-time chemotaxis assay device. METHODS Nasal polyps were obtained from chronic rhinosinusitis (CRS) patients during surgery. The polyps were homogenized and eotaxin levels in the extracts were measured. Eosinophils were purified from human peripheral blood by the CD16 negative selection method. Nasal polyp extract-induced eosinophil chemotaxis, with or without CCR3 antagonist, was assessed by EZ-TAXIScan. RESULTS There was a significant positive correlation between the eosinophil counts in nasal polyp and eotaxin levels in the nasal polyp extracts. Using EZ-TAXIScan, eosinophil chemotactic responses were observed following stimulation with nasal polyp extracts. There was a significant positive correlation between the chemotactic index toward the nasal polyp extracts and their eotaxin levels. Nasal polyp extract-induced chemotaxis was completely inhibited by CCR3 antagonist but not by chemoattractant receptor-homologous molecule expressed on Th2 cells (CRTH2) antagonist which inhibited PGD2-induced eosinophil chemotaxis. CONCLUSIONS The CCR3 pathway may play an important role in the pathogenesis of eosinophil recruitment in nasal polyps through selective eosinophil chemotaxis.
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18
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A real-time assay for neutrophil chemotaxis. Biotechniques 2016; 60:245-51. [PMID: 27177817 DOI: 10.2144/000114416] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 02/05/2016] [Indexed: 11/23/2022] Open
Abstract
Neutrophils are the predominant cells during acute phases of inflammation, and it is now recognized that these leukocytes play an important role in modulation of the immune response. Directed migration of these cells to the sites of injury, known as chemotaxis, is driven by chemoattractants present at the endothelial cell surface or in the extracellular matrix (ECM). Since uncontrolled or excessive neutrophil chemotaxis is involved in pathological conditions such as atherosclerosis and severe asthma, studying the chemical cues triggering neutrophil migration is essential for understanding the biology of these cells and developing new anti-inflammatory therapies. Although several methods have been developed to evaluate neutrophil chemotaxis, these techniques are generally labor-intensive or alter the native form of these cells and their physiological response. Here we report a rapid, non-invasive, impedance-based, and label-free assay for real-time assessment of neutrophil chemotaxis.
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Lammers KM, Chieppa M, Liu L, Liu S, Omatsu T, Janka-Junttila M, Casolaro V, Reinecker HC, Parent CA, Fasano A. Gliadin Induces Neutrophil Migration via Engagement of the Formyl Peptide Receptor, FPR1. PLoS One 2015; 10:e0138338. [PMID: 26378785 PMCID: PMC4574934 DOI: 10.1371/journal.pone.0138338] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Accepted: 08/28/2015] [Indexed: 12/22/2022] Open
Abstract
Background Gliadin, the immunogenic component within gluten and trigger of celiac disease, is known to induce the production of Interleukin-8, a potent neutrophil-activating and chemoattractant chemokine. We sought to study the involvement of neutrophils in the early immunological changes following gliadin exposure. Methods Utilizing immunofluorescence microscopy and flow cytometry, the redistribution of major tight junction protein, Zonula occludens (ZO)-1, and neutrophil recruitment were assessed in duodenal tissues of gliadin-gavaged C57BL/6 wild-type and Lys-GFP reporter mice, respectively. Intravital microscopy with Lys-GFP mice allowed monitoring of neutrophil recruitment in response to luminal gliadin exposure in real time. In vitro chemotaxis assays were used to study murine and human neutrophil chemotaxis to gliadin, synthetic alpha-gliadin peptides and the neutrophil chemoattractant, fMet-Leu-Phe, in the presence or absence of a specific inhibitor of the fMet-Leu-Phe receptor-1 (FPR1), cyclosporine H. An irrelevant protein, zein, served as a control. Results Redistribution of ZO-1 and an influx of CD11b+Lys6G+ cells in the lamina propria of the small intestine were observed upon oral gavage of gliadin. In vivo intravital microscopy revealed a slowing down of GFP+ cells within the vessels and influx in the mucosal tissue within 2 hours after challenge. In vitro chemotaxis assays showed that gliadin strongly induced neutrophil migration, similar to fMet-Leu-Phe. We identified thirteen synthetic gliadin peptide motifs that induced cell migration. Blocking of FPR1 completely abrogated the fMet-Leu-Phe-, gliadin- and synthetic peptide-induced migration. Conclusions Gliadin possesses neutrophil chemoattractant properties similar to the classical neutrophil chemoattractant, fMet-Leu-Phe, and likewise uses FPR1 in the process.
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Affiliation(s)
- Karen M. Lammers
- Department of Pediatrics, Mucosal Immunology and Biology Research Center, Massachusetts General Hospital East, Charlestown, Massachusetts, United States of America
- * E-mail:
| | - Marcello Chieppa
- Lymphocyte Biology Section, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, United States of America
| | - Lunhua Liu
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, NCI, NIH, Bethesda, Maryland, United States of America
| | - Song Liu
- Department of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Tatsushi Omatsu
- Department of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Mirkka Janka-Junttila
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, NCI, NIH, Bethesda, Maryland, United States of America
| | - Vincenzo Casolaro
- Department of Pediatrics, Mucosal Immunology and Biology Research Center, Massachusetts General Hospital East, Charlestown, Massachusetts, United States of America
| | - Hans-Christian Reinecker
- Department of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Carole A. Parent
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, NCI, NIH, Bethesda, Maryland, United States of America
| | - Alessio Fasano
- Department of Pediatrics, Mucosal Immunology and Biology Research Center, Massachusetts General Hospital East, Charlestown, Massachusetts, United States of America
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Abstract
Whereas the importance of macrophages in chronic inflammatory diseases is well recognized, there is an increasing awareness that neutrophils may also play an important role. In addition to the well-documented heterogeneity of macrophage phenotypes and functions, neutrophils also show remarkable phenotypic diversity among tissues. Understanding the molecular pathways that control this heterogeneity should provide abundant scope for the generation of more specific and effective therapeutics. We have shown that the transcription factor IFN regulatory factor 5 (IRF5) polarizes macrophages toward an inflammatory phenotype. IRF5 is also expressed in other myeloid cells, including neutrophils, where it was linked to neutrophil function. In this study we explored the role of IRF5 in models of acute inflammation, including antigen-induced inflammatory arthritis and lung injury, both involving an extensive influx of neutrophils. Mice lacking IRF5 accumulate far fewer neutrophils at the site of inflammation due to the reduced levels of chemokines important for neutrophil recruitment, such as the chemokine (C-X-C motif) ligand 1. Furthermore we found that neutrophils express little IRF5 in the joints and that their migratory properties are not affected by the IRF5 deficiency. These studies extend prior ones suggesting that inhibiting IRF5 might be useful for chronic macrophage-induced inflammation and suggest that IRF5 blockade would ameliorate more acute forms of inflammation, including lung injury.
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Blazek K, Eames HL, Weiss M, Byrne AJ, Perocheau D, Pease JE, Doyle S, McCann F, Williams RO, Udalova IA. IFN-λ resolves inflammation via suppression of neutrophil infiltration and IL-1β production. ACTA ACUST UNITED AC 2015; 212:845-53. [PMID: 25941255 PMCID: PMC4451128 DOI: 10.1084/jem.20140995] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 04/14/2015] [Indexed: 01/30/2023]
Abstract
Blazek et al. demonstrate that treatment with IL-28A reduces inflammation in collagen-induced arthritis by restricting the recruitment of IL-1β+ neutrophils. The most studied biological role of type III interferons (IFNs) has so far been their antiviral activity, but their role in autoimmune and inflammatory diseases remains largely unexplored. Here, we show that treatment with IFN-λ2/IL-28A completely halts and reverses the development of collagen-induced arthritis (CIA) and discover cellular and molecular mechanisms of IL-28A antiinflammatory function. We demonstrate that treatment with IL-28A dramatically reduces numbers of proinflammatory IL-17–producing Th17 and γδ T cells in the joints and inguinal lymph nodes, without affecting T cell proliferative responses or levels of anticollagen antibodies. IL-28A exerts its antiinflammatory effect by restricting recruitment of IL-1b–expressing neutrophils, which are important for amplification of inflammation. We identify neutrophils as cells expressing high levels of IFN-λ receptor 1 (IFNLR1)–IL-28 receptor α (IL28RA) and targeted by IL-28A. Our data highlight neutrophils as contributors to the pathogenesis of autoimmune arthritis and present IFN-λs or agonists of IFNLR1–IL28RA as putative new therapeutics for neutrophil-driven inflammation.
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Affiliation(s)
- Katrina Blazek
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, England, UK
| | - Hayley L Eames
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, England, UK
| | - Miriam Weiss
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, England, UK
| | - Adam J Byrne
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, England, UK
| | - Dany Perocheau
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, England, UK
| | - James E Pease
- National Heart and Lung Institute, Imperial College London, London SW7 2AZ, England, UK
| | | | - Fiona McCann
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, England, UK
| | - Richard O Williams
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, England, UK
| | - Irina A Udalova
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, England, UK
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Hayasaka H, Kobayashi D, Yoshimura H, Nakayama EE, Shioda T, Miyasaka M. The HIV-1 Gp120/CXCR4 axis promotes CCR7 ligand-dependent CD4 T cell migration: CCR7 homo- and CCR7/CXCR4 hetero-oligomer formation as a possible mechanism for up-regulation of functional CCR7. PLoS One 2015; 10:e0117454. [PMID: 25688986 PMCID: PMC4331524 DOI: 10.1371/journal.pone.0117454] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 12/24/2014] [Indexed: 11/29/2022] Open
Abstract
During human immunodeficiency virus (HIV) infection, enhanced migration of infected cells to lymph nodes leads to efficient propagation of HIV-1. The selective chemokine receptors, including CXCR4 and CCR7, may play a role in this process, yet the viral factors regulating chemokine-dependent T cell migration remain relatively unclear. The functional cooperation between the CXCR4 ligand chemokine CXCL12 and the CCR7 ligand chemokines CCL19 and CCL21 enhances CCR7-dependent T cell motility in vitro as well as cell trafficking into the lymph nodes in vivo. In this study, we report that a recombinant form of a viral CXCR4 ligand, X4-tropic HIV-1 gp120, enhanced the CD4 T cell response to CCR7 ligands in a manner dependent on CXCR4 and CD4, and that this effect was recapitulated by HIV-1 virions. HIV-1 gp120 significantly enhanced CCR7-dependent CD4 T cell migration from the footpad of mice to the draining lymph nodes in in vivo transfer experiments. We also demonstrated that CXCR4 expression is required for stable CCR7 expression on the CD4 T cell surface, whereas CXCR4 signaling facilitated CCR7 ligand binding to the cell surface and increased the level of CCR7 homo- as well as CXCR4/CCR7 hetero-oligomers without affecting CCR7 expression levels. Our findings indicate that HIV-evoked CXCR4 signaling promotes CCR7-dependent CD4 T cell migration by up-regulating CCR7 function, which is likely to be induced by increased formation of CCR7 homo- and CXCR4/CCR7 hetero-oligomers on the surface of CD4 T cells.
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Affiliation(s)
- Haruko Hayasaka
- Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
- * E-mail:
| | - Daichi Kobayashi
- Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Hiromi Yoshimura
- Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Emi E. Nakayama
- Department of Viral Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Tatsuo Shioda
- Department of Viral Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Masayuki Miyasaka
- Institute for Academic Initiatives, Osaka University, Suita, Osaka, Japan
- MediCity Laboratory, University of Turku, Tykistökatu 6A, 20520, Turku, Finland
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Ushiyama A, Ohtani S, Suzuki Y, Wada K, Kunugita N, Ohkubo C. Effects of 21-kHz intermediate frequency magnetic fields on blood properties and immune systems of juvenile rats. Int J Radiat Biol 2014; 90:1211-7. [DOI: 10.3109/09553002.2014.930538] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yamauchi A, Hadjur C, Takahashi T, Suzuki I, Hirose K, Mahe YF. Human skin melanocyte migration towards stromal cell-derived factor-1α demonstrated by optical real-time cell mobility assay: modulation of their chemotactic ability by α-melanocyte-stimulating hormone. Exp Dermatol 2014; 22:664-7. [PMID: 24079738 DOI: 10.1111/exd.12232] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2013] [Indexed: 01/09/2023]
Abstract
To identify potential regulators of normal human melanocyte behaviour, we have developed an in vitro human melanocyte migration assay, using the optically accessible, real-time cell motility assay device TAXIScan. Coating of the glass surface with an extracellular matrix that served as scaffolding molecule was essential to demonstrate efficient melanocyte migration. Among several chemokines tested, stromal cell-derived factor (SDF)-1α/CXCL12 was the most effective driver of human normal skin melanocytes. Incubation of melanocytes with α-melanocyte-stimulating hormone (MSH) before the assay specifically enhanced CXCR4 expression and consequently chemotaxis towards SDF-1α/CXCL12. These results suggest that α-MSH acts on melanocytes to produce melanin as well as stimulates the cells to migrate to the site where they work through CXCR4 up-regulation, which is a new dynamic mode of action of α-MSH on melanocyte physiology.
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Affiliation(s)
- Akira Yamauchi
- Department of Biochemistry, Kawasaki Medical School, Kurashiki, Japan
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Kanegasaki S, Matsushima K, Shiraishi K, Nakagawa K, Tsuchiya T. Macrophage inflammatory protein derivative ECI301 enhances the alarmin-associated abscopal benefits of tumor radiotherapy. Cancer Res 2014; 74:5070-8. [PMID: 25038226 DOI: 10.1158/0008-5472.can-14-0551] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Radiotherapy can produce antitumor benefits beyond the local site of irradiation, an immune-based phenomenon known as the abscopal effect, but the mechanisms underlying these benefits are poorly understood. Preclinical studies of ECI301, a mutant derivative of macrophage inhibitory protein-1α, have shown that its administration can improve the antitumor effects of radiotherapy in a manner associated with a tumor-independent abscopal effect. In this article, we report that i.v. administration of ECI301 after intratumoral injection of tumor cell lysates can inhibit tumor growth, not only at the site of injection but also at nontreated sites. Effects of the tumor lysate were further recapitulated by intratumoral injection [corrected] of the alarmins HSP70 or HMGB1, but not HSP60, and i.v. administration [corrected] of ECI301 + HSP70 were sufficient to inhibit tumor growth. Although i.v. administration [corrected] of ECI301 + HMGB1 did not inhibit tumor growth, we found that administration of a neutralizing HMGB1 antibody neutralized the cooperative effects of ECI301 on tumor irradiation. Moreover, mice genetically deficient in TLR4, an immune pattern receptor that binds alarmins, including HMGB1 and HSP70, did not exhibit antitumor responses to irradiation with ECI301 administration. Although ECI301 was cleared rapidly from peripheral blood, it was found to bind avidly to HSP70 and HMGB1 in vitro. Our results suggest a model in which sequential release of the alarmins HSP70 and HMGB1 from a tumor by irradiation may trap circulating ECI301, thereby licensing or restoring tumor immunosurveillance capabilities of natural killer cells or CD4(+) and CD8(+) T cells against tumor cells that may evade irradiation. Cancer Res; 74(18); 5070-8. ©2014 AACR.
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Affiliation(s)
- Shiro Kanegasaki
- Central Laboratory, Effector Cell Institute (ECI) Inc., Meguro-ku, Tokyo, Japan. YU-ECI Research Center for Medical Science, Yeungnam University, Gyeongsan, Gyongbuk, Republic of Korea
| | - Kouji Matsushima
- Department of Molecular Preventive Medicine, Graduate School of Medicine, the University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kenshiro Shiraishi
- Department of Radiology, University Hospital, the University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Keiichi Nakagawa
- Department of Radiology, University Hospital, the University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tomoko Tsuchiya
- Central Laboratory, Effector Cell Institute (ECI) Inc., Meguro-ku, Tokyo, Japan. YU-ECI Research Center for Medical Science, Yeungnam University, Gyeongsan, Gyongbuk, Republic of Korea.
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IRF8 is a transcriptional determinant for microglial motility. Purinergic Signal 2014; 10:515-21. [PMID: 24798612 DOI: 10.1007/s11302-014-9413-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 04/22/2014] [Indexed: 12/21/2022] Open
Abstract
Microglia, the resident immune cells of the central nervous system, are constitutively mobile cells that undergo rapid directional movement toward sites of tissue disruption. However, transcriptional regulatory mechanisms of microglial motility remain unknown. In the present study, we show that interferon regulatory factor-8 (IRF8) regulates microglial motility. We found that ATP and complement component, C5a, induced chemotaxis of IRF8 wild-type microglia. However, these responses were markedly suppressed in microglia lacking IRF8 (Irf8 (-/-)). In a consistent manner, phosphorylation of Akt (which plays a crucial role in ATP-induced chemotaxis) was abolished in Irf8 (-/-)microglia. Real-time polymerase chain reaction analysis revealed that motility-related microglial genes such as P2Y12 receptor were significantly suppressed in Irf8 (-/-)microglia. Furthermore, Irf8 (-/-)microglia exhibited a differential expression pattern of nucleotide-degrading enzymes compared with their wild-type counterparts. Overall, our findings suggest that IRF8 may regulate microglial motility via the control of microglial gene expression.
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Kawahara M, Hitomi A, Nagamune T. S-Fms signalobody enhances myeloid cell growth and migration. Biotechnol J 2014; 9:954-61. [PMID: 24376185 DOI: 10.1002/biot.201300346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 12/02/2013] [Accepted: 12/17/2013] [Indexed: 12/23/2022]
Abstract
Since receptor tyrosine kinases (RTKs) control various cell fates in many types of cells, mimicry of RTK functions is promising for artificial control of cell fates. We have previously developed single-chain Fv (scFv)/receptor chimeras named signalobodies that can mimic receptor signaling in response to a specific antigen. While the RTK-based signalobodies enabled us to control cell growth and migration, further extension of applicability in another cell type would underlie the impact of the RTK-based signalobodies. In this study, we applied the scFv-c-Fms (S-Fms) signalobody in a murine myeloid progenitor cell line, FDC-P1. S-Fms transduced a fluorescein-conjugated BSA (BSA-FL)-dependent growth signal and activated downstream signaling molecules including MEK, ERK, Akt, and STAT3, which are major constituents of Ras/MAPK, PI3K/Akt, and JAK/STAT signaling pathways. In addition, S-Fms transduced a migration signal as demonstrated by the transwell-based migration assay. Direct real-time observation of the cells further confirmed that FDC/S-Fms cells underwent directional cell migration toward a positive gradient of BSA-FL. These results demonstrated the utility of the S-Fms signalobody for controlling growth and migration of myeloid cells. Further extension of our approach includes economical large-scale production of practically relevant blood cells as well as artificial control of cell migration for tissue regeneration and immune response.
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Affiliation(s)
- Masahiro Kawahara
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Tokyo, Japan.
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Kawahara M, Hitomi A, Nagamune T. Antigen-responsive regulation of Cell motility and migration via the signalobodies based on c-Fms and c-Mpl. Biotechnol Prog 2014; 30:411-7. [DOI: 10.1002/btpr.1861] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 12/14/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Masahiro Kawahara
- Dept. of Chemistry and Biotechnology, School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Azusa Hitomi
- Dept. of Chemistry and Biotechnology, School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Teruyuki Nagamune
- Dept. of Chemistry and Biotechnology, School of Engineering; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-8656 Japan
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Yamauchi A, Degawa-Yamauchi M, Kuribayashi F, Kanegasaki S, Tsuchiya T. Systematic single cell analysis of migration and morphological changes of human neutrophils over stimulus concentration gradients. J Immunol Methods 2013; 404:59-70. [PMID: 24370750 DOI: 10.1016/j.jim.2013.12.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 12/01/2013] [Accepted: 12/10/2013] [Indexed: 11/16/2022]
Abstract
To compare the responses of individual neutrophils to chemoattractants, migration pathway data were obtained using TAXIScan, an optically accessible/horizontal apparatus in which a concentration gradient is established reproducibly for a given stimulus. The observed linear-mode trajectory pattern of neutrophils toward N-formyl-methionyl-leucyl-phenylalanine (fMLP) or Interleukin (IL)-8/CXCL8 was distinguished from random migration patterns toward leukotriene (LT) B4 or platelet activating factor (PAF). The median values of velocity and directionality calculated for individual cells toward fMLP and IL-8 were both relatively similar and high, whereas the values toward LTB4 and PAF were widely dispersed over a lower range of directionality and from low to high ranges of velocity. The different patterns between the groups may be explained by unique morphology with single polarity toward fMLP and IL-8, and unstable morphology with multiple polarities toward LTB4 and PAF. Unique morphologies toward fMLP and IL-8 were not affected by coexisting LTB4 or PAF. On the other hand, the addition of suboptimum concentrations of fMLP or IL-8 to LTB4 or PAF induced a nearly maximum chemotactic response in most cells. These data suggest that exogenous formyl peptides and endogenous chemokines augment neutrophil accumulation at inflammation sites, whereas lipid mediators may play a role in supporting activation of the inflammatory cells for recruitment.
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Affiliation(s)
- Akira Yamauchi
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan.
| | | | - Futoshi Kuribayashi
- Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - Shiro Kanegasaki
- YU-ECI Research Center for Medical Science, Yeungnam University, Gyeongsan-City 712-749, Republic of Korea
| | - Tomoko Tsuchiya
- YU-ECI Research Center for Medical Science, Yeungnam University, Gyeongsan-City 712-749, Republic of Korea.
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Brzostowski JA, Sawai S, Rozov O, Liao XH, Imoto D, Parent CA, Kimmel AR. Phosphorylation of chemoattractant receptors regulates chemotaxis, actin reorganization and signal relay. J Cell Sci 2013; 126:4614-26. [PMID: 23902692 PMCID: PMC3795335 DOI: 10.1242/jcs.122952] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Migratory cells, including mammalian leukocytes and Dictyostelium, use G-protein-coupled receptor (GPCR) signaling to regulate MAPK/ERK, PI3K, TORC2/AKT, adenylyl cyclase and actin polymerization, which collectively direct chemotaxis. Upon ligand binding, mammalian GPCRs are phosphorylated at cytoplasmic residues, uncoupling G-protein pathways, but activating other pathways. However, connections between GPCR phosphorylation and chemotaxis are unclear. In developing Dictyostelium, secreted cAMP serves as a chemoattractant, with extracellular cAMP propagated as oscillating waves to ensure directional migratory signals. cAMP oscillations derive from transient excitatory responses of adenylyl cyclase, which then rapidly adapts. We have studied chemotactic signaling in Dictyostelium that express non-phosphorylatable cAMP receptors and show through chemotaxis modeling, single-cell FRET imaging, pure and chimeric population wavelet quantification, biochemical analyses and TIRF microscopy, that receptor phosphorylation is required to regulate adenylyl cyclase adaptation, long-range oscillatory cAMP wave production and cytoskeletal actin response. Phosphorylation defects thus promote hyperactive actin polymerization at the cell periphery, misdirected pseudopodia and the loss of directional chemotaxis. Our data indicate that chemoattractant receptor phosphorylation is required to co-regulate essential pathways for migratory cell polarization and chemotaxis. Our results significantly extend the understanding of the function of GPCR phosphorylation, providing strong evidence that this evolutionarily conserved mechanism is required in a signal attenuation pathway that is necessary to maintain persistent directional movement of Dictyostelium, neutrophils and other migratory cells.
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Affiliation(s)
- Joseph A Brzostowski
- Laboratory of Immunogenetics Imaging Facility, NIAID/NIH, Rockville, MD 20852, USA
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Yamamoto R, Ueki S, Moritoki Y, Kobayashi Y, Oyamada H, Konno Y, Tamaki M, Itoga M, Takeda M, Ito W, Chihara J. Adiponectin attenuates human eosinophil adhesion and chemotaxis: implications in allergic inflammation. J Asthma 2013; 50:828-35. [PMID: 23777560 DOI: 10.3109/02770903.2013.816725] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Growing evidence has shown an association between obesity and asthma. Adiponectin, an adipocyte-derived cytokine, is known to have anti-inflammatory effects with reduced concentrations in obese subjects. Recent findings raised the intriguing possibility that adiponectin might play a role in allergic inflammation, although the mechanistic basis for their relationship remains unclear. The purpose of this study was to examine whether adiponectin might affect functions of eosinophils, which play an important role in the pathogenesis of asthma. METHODS Human peripheral blood eosinophils were purified to study expression of adiponectin receptors AdipoR1 and AdipoR2 using RT-PCR and flow cytometry. The effect of adiponectin on eosinophil survival was investigated using annexin V and propidium iodide staining. Eotaxin-induced cell adhesion was investigated using ICAM-1-coated plates. A Boyden chamber and real-time horizontal migration system were used for eotaxin-directed chemotaxis assay. Expression of eotaxin receptor CCR3 and intracellular calcium influx were assessed by flow cytometry. RESULTS AdipoR1 and AdipoR2 were expressed in human eosinophils. Adiponectin did not affect eosinophil survival or CCR3 expression; however, eotaxin-enhanced adhesion was inhibited by pretreatment with adiponectin. Adiponectin also diminished eotaxin-directed chemotactic responses by disturbing both velocity and directionality. Calcium influx in response to eotaxin was attenuated by adiponectin. CONCLUSIONS These results indicate that adiponectin attenuates the eosinophil functions induced by eotaxin without affecting cell viability. The inhibitory effect was associated with diminished calcium signaling rather than altering of surface receptor expression. Increasing circulating adiponectin might be a novel therapeutic modality for treatment of asthma, especially in obese asthmatics.
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Affiliation(s)
- Rie Yamamoto
- Department of Infection, Allergy, Clinical Immunology and Laboratory Medicine, Akita University Graduate School of Medicine , Akita , Japan
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Fujishima H, Fukagawa K, Okada N, Takano Y, Hirai H, Nagata K, Hashida R, Matsumoto K, Saito H. Chemotactic responses of peripheral blood eosinophils to prostaglandin D2 in atopic keratoconjunctivitis. Ann Allergy Asthma Immunol 2013; 111:126-131.e4. [PMID: 23886231 DOI: 10.1016/j.anai.2013.05.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 05/23/2013] [Accepted: 05/26/2013] [Indexed: 11/25/2022]
Abstract
BACKGROUND Eosinophils appear to be key cells in the pathogenesis of conjunctival inflammation in atopic keratoconjunctivitis (AKC). Chemoattractant receptor homologous molecule expressed on TH2 cells (CRTH2) mediates prostaglandin D2 (PGD2)-dependent migration of eosinophils. However, it is unclear whether CRTH2/PGD2-dependent eosinophil migration is upregulated in allergic diseases. OBJECTIVE To compare the chemotactic responses of peripheral blood eosinophils to prostaglandin D2 in patients with severe AKC and healthy individuals. METHODS We used an enzyme immunoassay system to measure PGD2 levels in tears and blood samples from healthy individuals and patients with AKC. CRTH2 expression on peripheral blood eosinophils was determined using reverse-transcriptase polymerase chain reaction (RT-PCR), flow cytometry, and an oligonucleotide array system. Chemotaxis experiments were performed using a modified Boyden chamber technique and an optical assay system. RESULTS The PGD2 concentrations were higher in tears from patients with severe AKC compared with healthy individuals. RT-PCR (severe and mild cases), flow cytometry (mild cases), and GeneChip analyses revealed a significantly higher expression of CRTH2 on peripheral blood eosinophils in patients with AKC than in healthy individuals. PGD2 and its stable metabolite 13,14-dihydro-15-keto-PGD2, a CRTH2 agonist, induced chemotaxis of eosinophils from patients with AKC; chemotaxis was significantly enhanced in eosinophils from patients with severe AKC compared with those from healthy individuals. CONCLUSION CRTH2 is more abundantly expressed on eosinophils from patients with AKC and promoted PGD2-dependent migration to a greater extent than in healthy individuals.
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Affiliation(s)
- Hiroshi Fujishima
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
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Modeling and measuring signal relay in noisy directed migration of cell groups. PLoS Comput Biol 2013; 9:e1003041. [PMID: 23658506 PMCID: PMC3642071 DOI: 10.1371/journal.pcbi.1003041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 03/06/2013] [Indexed: 01/08/2023] Open
Abstract
We develop a coarse-grained stochastic model for the influence of signal relay on the collective behavior of migrating Dictyostelium discoideum cells. In the experiment, cells display a range of collective migration patterns, including uncorrelated motion, formation of partially localized streams, and clumping, depending on the type of cell and the strength of the external, linear concentration gradient of the signaling molecule cyclic adenosine monophosphate (cAMP). From our model, we find that the pattern of migration can be quantitatively described by the competition of two processes, the secretion rate of cAMP by the cells and the degradation rate of cAMP in the gradient chamber. Model simulations are compared to experiments for a wide range of strengths of an external linear-gradient signal. With degradation, the model secreting cells form streams and efficiently transverse the gradient, but without degradation, we find that model secreting cells form clumps without streaming. This indicates that the observed effective collective migration in streams requires not only signal relay but also degradation of the signal. In addition, our model allows us to detect and quantify precursors of correlated motion, even when cells do not exhibit obvious streaming. Collective cell migration is observed in various biological processes including angiogenesis, gastrulation, fruiting body formation, and wound healing. Dictyostelium discoideum, for example, exhibits highly dynamic patterns such as streams and clumps during its early phases of collective motion and has served as a model organism for the study of collective migration. In this study, facilitated by experiments, we develop a conceptual, minimalistic, computational model to analyze the dynamical processes leading to the emergence of collective patterns and the associated dependence on the external injection of a cAMP signal, the intercellular cAMP secretion rate, and the cAMP degradation rate. We demonstrate that degradation is necessary to reproduce the experimentally observed collective migration patterns, and show how our model can be utilized to uncover basic dependences of migration modes on cell characteristics. Our numerical observations elucidate the different possible types of motion and quantify the onset of collective motion. Thus, the model allows us to distinguish noisy motion guided by the external signal from weakly correlated motion.
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Uchida M, Oyanagi E, Miyachi M, Yamauchi A, Yano H. Relationship between macrophage differentiation and the chemotactic activity toward damaged myoblast cells. J Immunol Methods 2013; 393:61-9. [PMID: 23603617 DOI: 10.1016/j.jim.2013.04.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 03/11/2013] [Accepted: 04/10/2013] [Indexed: 11/15/2022]
Abstract
We investigated the effect of macrophage differentiation on the chemotactic activity to invade local damaged myoblasts using in vitro models of muscle injury. We found that: 1) the chemotactic activity of macrophages toward areas of damaged myoblasts might be induced more by live myoblasts than dead ones, 2) the chemotactic activity of macrophages is not due to velocity, but depends on the directionality toward damaged myoblast cells, and 3) macrophage differentiation strongly influence the chemotactic activity toward damaged myoblast cells through the expression of CCR2 and/or F-actin.
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Affiliation(s)
- Masataka Uchida
- Department of Health and Sports Science, Kawasaki University of Medical Welfare, Kurashiki, Japan
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Niwa T, Mizukoshi K, Azuma Y, Kashimata M, Shibutani T. Fundamental study of osteoclast chemotaxis toward chemoattractants expressed in periodontitis. J Periodontal Res 2013; 48:773-80. [PMID: 23586648 DOI: 10.1111/jre.12068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2013] [Indexed: 01/25/2023]
Abstract
BACKGROUND AND OBJECTIVE Periodontitis is a chronic inflammatory disease that leads to bone resorption by osteoclasts (OCs). Several factors contribute to the differentiation of OCs from hematopoietic precursors. Cellular chemotactic factors are expressed in periodontitis tissue, but the effects of these chemoattractants on OCs are not well understood. Here we examined the effects of chemoattractants produced in inflamed periodontal tissue on OC chemotaxis. MATERIAL AND METHODS Rat bone-marrow OCs were cultured in OC culture medium for 3 or 6 d. Using EZ-TAXIScan™, the chemotactic response of these OCs to several chemoattractants [monocyte chemotactic protein-1; macrophage inflammatory protein 1α; regulated on activation, normal T-cell expressed and secreted; stromal cell-derived factor-1α; and complement activation product 5a (C5a)] was measured. In addition, we measured the effect of C5a-specific inhibitors on chemotactic responses toward C5a. The recorded chemotactic responses were quantitatively analysed using ImageJ software. RESULTS Chemoattractants associated with periodontal disease significantly increased the chemotactic activity of differentiated rat OCs in a concentration-dependent manner, with C5a inducing the highest chemotactic activity of OCs cultured for 3 or 6 d. The C5a-specific inhibitor significantly inhibited chemotaxis toward C5a in a concentration-dependent manner. CONCLUSION We suggest that C5a plays an important role in pathologic bone resorption in periodontal disease by stimulating the chemotaxis of OCs. Therefore, C5a is a potential target for the treatment of periodontal disease.
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Affiliation(s)
- T Niwa
- Department of Periodontology, Division of Oral Infections and Health Sciences, Asahi University School of Dentistry, Mizuho, Japan
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Liu L, Aerbajinai W, Ahmed SM, Rodgers GP, Angers S, Parent CA. Radil controls neutrophil adhesion and motility through β2-integrin activation. Mol Biol Cell 2012; 23:4751-65. [PMID: 23097489 PMCID: PMC3521683 DOI: 10.1091/mbc.e12-05-0408] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Various agonists trigger β2-integrin activation in neutrophils, yet the mechanisms that regulate β2-integrin inside-out signaling remain obscure. Radil, a novel Rap downstream effector, is an important adapter in the pathway that links G protein–coupled chemoattractant receptors to adhesion complexes during neutrophil chemotaxis. Integrin activation is required to facilitate multiple adhesion-dependent functions of neutrophils, such as chemotaxis, which is critical for inflammatory responses to injury and pathogens. However, little is known about the mechanisms that mediate integrin activation in neutrophils. We show that Radil, a novel Rap1 effector, regulates β1- and β2-integrin activation and controls neutrophil chemotaxis. On activation and chemotactic migration of neutrophils, Radil quickly translocates from the cytoplasm to the plasma membrane in a Rap1a-GTP–dependent manner. Cells overexpressing Radil show a substantial increase in cell adhesion, as well as in integrin/focal adhesion kinase (FAK) activation, and exhibit an elongated morphology, with severe tail retraction defects. This phenotype is effectively rescued by treatment with either β2-integrin inhibitory antibodies or FAK inhibitors. Conversely, knockdown of Radil causes severe inhibition of cell adhesion, β2-integrin activation, and chemotaxis. Furthermore, we found that inhibition of Rap activity by RapGAP coexpression inhibits Radil-mediated integrin and FAK activation, decreases cell adhesion, and abrogates the long-tail phenotype of Radil cells. Overall, these studies establish that Radil regulates neutrophil adhesion and motility by linking Rap1 to β2-integrin activation.
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Affiliation(s)
- Lunhua Liu
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
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Ohsawa K, Sanagi T, Nakamura Y, Suzuki E, Inoue K, Kohsaka S. Adenosine A3 receptor is involved in ADP-induced microglial process extension and migration. J Neurochem 2012; 121:217-27. [PMID: 22335470 DOI: 10.1111/j.1471-4159.2012.07693.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The extension of microglial processes toward injured sites in the brain is triggered by the stimulation of the purinergic receptor P2Y(12) by extracellular ATP. We recently showed that P2Y(12) stimulation by ATP induces microglial process extension in collagen gels. In the present study, we found that a P2Y(12) agonist, 2-methylthio-ADP (2MeSADP), failed to induce the process extension of microglia in collagen gels and that co-stimulation with adenosine, a phosphohydrolytic derivative of ATP, and 2MeSADP restored the chemotactic process extension. An adenosine A3 receptor (A3R)-selective agonist restored the chemotactic process extension, but other receptor subtype agonists did not. The removal of adenosine by adenosine deaminase and the blocking of A3R by an A3R-selective antagonist inhibited ADP-induced process extension. The A3R antagonist inhibited ADP-induced microglial migration, and an A3R agonist promoted 2MeSADP-stimulated migration. ADP and the A3R agonist activated Jun N-terminal kinase in microglia, and a Jun N-terminal kinase inhibitor inhibited the ADP-induced process extension. An RT-PCR analysis showed that A1R and A3R were expressed by microglia sorted from adult rat brains and that the A2AR expression level was very low. These results suggested that A3R signaling may be involved in the ADP-induced process extension and migration of microglia.
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Affiliation(s)
- Keiko Ohsawa
- Department of Neurochemistry, National Institute of Neuroscience, 4-1-1 Ogawahigashi Kodaira, Tokyo 187-8502, Japan
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Kikuchi-Ueda T, Tansho S, Ono Y. Enhancement of interleukin-8-induced chemotactic response and reactive oxygen species production in HL-60 cells expressing CXCR1. J Infect Chemother 2011; 18:283-7. [PMID: 22009527 DOI: 10.1007/s10156-011-0321-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 09/27/2011] [Indexed: 11/28/2022]
Abstract
Neutrophils play a pivotal role in immunity against infection by ingesting and killing invading microbes. Neutrophils isolated from human peripheral blood have been used for a number of studies conducted for evaluation of immunomodulating drugs, cytokines, and microbe products. Human promyelocytic leukemia cells, HL-60, have been extensively studied because they can differentiate into neutrophil-like cells by addition of all-trans retinoic acid or dimethyl sulfoxide. For a system that would always allow experimental use of granulocytic cells in a uniformly activated state, we have established HL-60 cell lines with increased migratory activity by transducing the CXC chemokine receptor 1 (CXCR1) gene. When these cell lines were primed with CXC chemokine ligand 8 (IL-8), a slight increase in reactive oxygen species production induced by phorbol myristate acetate (PMA) or zymosan A stimuli was observed. A significance increase in migratory activity was noticed when the HL-60 cells transduced CXCR1 were stimulated with IL-8 in the Boyden chamber method. The gene-transduced HL-60 cell lines may be used as a substitute for neutrophils in screening the effects of various immunomodulating drugs on the migratory activity induced by IL-8.
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Affiliation(s)
- Takane Kikuchi-Ueda
- Department of Microbiology and Immunology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan.
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Das S, Rericha EC, Bagorda A, Parent CA. Direct biochemical measurements of signal relay during Dictyostelium development. J Biol Chem 2011; 286:38649-38658. [PMID: 21911494 DOI: 10.1074/jbc.m111.284182] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Upon starvation, individual Dictyostelium discoideum cells enter a developmental program that leads to collective migration and the formation of a multicellular organism. The process is mediated by extracellular cAMP binding to the G protein-coupled cAMP receptor 1, which initiates a signaling cascade leading to the activation of adenylyl cyclase A (ACA), the synthesis and secretion of additional cAMP, and an autocrine and paracrine activation loop. The release of cAMP allows neighboring cells to polarize and migrate directionally and form characteristic chains of cells called streams. We now report that cAMP relay can be measured biochemically by assessing ACA, ERK2, and TORC2 activities at successive time points in development after stimulating cells with subsaturating concentrations of cAMP. We also find that the activation profiles of ACA, ERK2, and TORC2 change in the course of development, with later developed cells showing a loss of sensitivity to the relayed signal. We examined mutants in PKA activity that have been associated with precocious development and find that this loss in responsiveness occurs earlier in these mutants. Remarkably, we show that this loss in sensitivity correlates with a switch in migration patterns as cells transition from streams to aggregates. We propose that as cells proceed through development, the cAMP-induced desensitization and down-regulation of cAMP receptor 1 impacts the sensitivities of chemotactic signaling cascades leading to changes in migration patterns.
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Affiliation(s)
- Satarupa Das
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892
| | - Erin C Rericha
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742
| | - Anna Bagorda
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892
| | - Carole A Parent
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892.
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mTORC2 regulates neutrophil chemotaxis in a cAMP- and RhoA-dependent fashion. Dev Cell 2011; 19:845-57. [PMID: 21145500 DOI: 10.1016/j.devcel.2010.11.004] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 09/16/2010] [Accepted: 11/03/2010] [Indexed: 11/22/2022]
Abstract
We studied the role of the target of rapamycin complex 2 (mTORC2) during neutrophil chemotaxis, a process that is mediated through the polarization of actin and myosin filament networks. We show that inhibition of mTORC2 activity, achieved via knock down (KD) of Rictor, severely inhibits neutrophil polarization and directed migration induced by chemoattractants, independently of Akt. Rictor KD also abolishes the ability of chemoattractants to induce cAMP production, a process mediated through the activation of the adenylyl cyclase 9 (AC9). Cells with either reduced or higher AC9 levels also exhibit specific and severe tail retraction defects that are mediated through RhoA. We further show that cAMP is excluded from extending pseudopods and remains restricted to the cell body of migrating neutrophils. We propose that the mTORC2-dependent regulation of MyoII occurs through a cAMP/RhoA-signaling axis, independently of actin reorganization during neutrophil chemotaxis.
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Constitutive reductions in mTOR alter cell size, immune cell development, and antibody production. Blood 2010; 117:1228-38. [PMID: 21079150 DOI: 10.1182/blood-2010-05-287821] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Mammalian TOR (mTOR) regulates cell growth, proliferation, and migration. Because mTOR knock-outs are embryonic lethal, we generated a viable hypomorphic mouse by neo-insertion that partially disrupts mTOR transcription and creates a potential physiologic model of mTORC1/TORC2 inhibition. Homozygous knock-in mice exhibited reductions in body, organ, and cell size. Although reductions in most organ sizes were proportional to decreased body weight, spleens were disproportionately smaller. Decreases in the total number of T cells, particularly memory cells, and reduced responses to chemokines suggested alterations in T-cell homing/homeostasis. T-cell receptor-stimulated T cells proliferated less, produced lower cytokine levels, and expressed FoxP3. Decreased neutrophil numbers were also observed in the spleen, despite normal development and migration in the bone marrow. However, B-cell effects were most pronounced, with a partial block in B-cell development in the bone marrow, altered splenic populations, and decreases in proliferation, antibody production, and migration to chemokines. Moreover, increased AKT(Ser473) phosphorylation was observed in activated B cells, reminiscent of cancers treated with rapamycin, and was reduced by a DNA-pk inhibitor. Thus, mTOR is required for the maturation and differentiation of multiple immune cell lineages. These mice provide a novel platform for studying the consequences of constitutively reduced mTORC1/TORC2 activity.
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Rho-mDia1 pathway is required for adhesion, migration, and T-cell stimulation in dendritic cells. Blood 2010; 116:5875-84. [PMID: 20881208 DOI: 10.1182/blood-2010-01-264150] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Dendritic cells (DCs) are essential for the initiation of acquired immune responses through antigen acquisition, migration, maturation, and T-cell stimulation. One of the critical mechanisms in this response is the process actin nucleation and polymerization, which is mediated by several groups of proteins, including mammalian Diaphanous-related formins (mDia). However, the role of mDia in DCs remains unknown. Herein, we examined the role of mDia1 (one of the isoforms of mDia) in DCs. Although the proliferation and maturation of bone marrow-derived DCs were comparable between control C57BL/6 and mDia1-deficient (mDia1(-/-)) mice, adhesion and spreading to cellular matrix were impaired in mDia1(-/-) bone marrow-derived DCs. In addition, fluorescein isothiocyanate-induced cutaneous DC migration to draining lymph nodes in vivo and invasive migration and directional migration to CCL21 in vitro were suppressed in mDia1(-/-) DCs. Moreover, sustained T-cell interaction and T-cell stimulation in lymph nodes were impaired by mDia1 deficiency. Consistent with this, the DC-dependent delayed hypersensitivity response was attenuated by mDia1-deficient DCs. These results suggest that actin polymerization, which is mediated by mDia1, is essential for several aspects of DC-initiated acquired immune responses.
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43
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Yui Y, Itoh K, Yoshioka K, Naka N, Watanabe M, Hiraumi Y, Matsubara H, Watanabe KI, Sano K, Nakahata T, Adachi S. Mesenchymal mode of migration participates in pulmonary metastasis of mouse osteosarcoma LM8. Clin Exp Metastasis 2010; 27:619-30. [PMID: 20872237 DOI: 10.1007/s10585-010-9352-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2009] [Accepted: 09/16/2010] [Indexed: 01/11/2023]
Abstract
The outcomes of osteosarcoma patients still remain poor because of intractable pulmonary metastasis. We previously established a highly metastatic osteosarcoma cell line, LM8 from Dunn mouse osteosarcoma by in vivo selection. We herein aimed to clarify the characteristic biological features related with high metastatic potential and new target molecules to suppress pulmonary metastasis of osteosarcoma, using this syngeneic spontaneous metastatic model. LM8 cells acquired fibroblastic morphology with striking filopodia on the cell surface. Immunostaining showed faint stress fiber formation and peripherally localized integrin β1, and biochemical analyses showed the activated Cdc42 and autophosphorylation of focal adhesion kinase (FAK) in LM8 cells when compared to Dunn cells. LM8 cells had activated motility in single cell migration mode. LM8 migration was increased by a Rho-associated kinase (ROCK) inhibitor, Y-27632, while decreased by Cdc42 silencing using RNA interference system. We found that a clinically approved camptothecin analog, irinotecan suppressed the migration, Cdc42 activity, and autophosphorylation of FAK, and attenuated integrin β1 distribution selectively in LM8 cells. Daily oral administration of irinotecan significantly reduced the rate and size of pulmonary metastasis in syngeneic C3H mice. The fibroblastic morphology and activated cell migration with the dependency on Cdc42 but not Rho-ROCK signaling pathway argued that LM8 moved in mesenchymal mode of cell migration. This activated mesenchymal migration was a key component of the pulmonary metastasis of LM8 cells. The inhibition of mesenchymal migration by irinotecan, in addition to its cytotoxic effects, might be effective in preventing pulmonary metastasis of osteosarcoma.
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Affiliation(s)
- Yoshihiro Yui
- Department of Pediatrics, Kyoto University Graduate School of Medicine, Shougoin, Sakyo-ku, Japan.
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Toda E, Terashima Y, Sato T, Hirose K, Kanegasaki S, Matsushima K. FROUNT Is a Common Regulator of CCR2 and CCR5 Signaling to Control Directional Migration. THE JOURNAL OF IMMUNOLOGY 2009; 183:6387-94. [DOI: 10.4049/jimmunol.0803469] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Nitta N, Aoki Y, Isogawa Y, Tsuchiya T, Kanegasaki S. Image analysis of mast cell degranulation in a concentration gradient of stimuli formed in the channel between a glass plate and a silicon substrate. Eur J Cell Biol 2009; 88:541-9. [PMID: 19515452 DOI: 10.1016/j.ejcb.2009.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 03/27/2009] [Accepted: 03/30/2009] [Indexed: 11/26/2022] Open
Abstract
Measurement of released granule components, popularly used to quantify mast cell exocytosis, does not deliver real-time information about degranulation at the single-cell level nor the ratio of responding/non-responding cells. Rather it provides, only end-point, bulk-population data. Here we studied degranulation of rat peritoneal mast cells dispersed in a narrow horizontal channel between a silicon substrate and a glass plate. Upon exposure to a concentration gradient of a soluble stimulus, degranulation started from those cells facing towards the highest concentration of stimulus. We captured images of exocytosing cells without the need for phase-contrast or differential interference-contrast microscopy. This was achieved using the reflection caused by the silicon substrate. The time-lapse images of cells in the channel were segmented into multiple concentration belts to identify the proportion of degranulated cells in each belt region. Maximum ratios of degranulated cells in the belt regions determined by time-course curve fitting calculations were then plotted against the distance from the stimulus injection site, resulting in a sigmoidal response curve. This method provides a powerful means for real-time analysis of concentration- and stimulus-dependent degranulation of mast cells and allows comparison of cell responses under different conditions. To show its effectiveness, we evaluated the effect of a protein kinase C (PKC) inhibitor, Gö6976, on degranulation induced by various stimuli. In contrast to stimulation with concanavalin A+lysophosphatidylserine (lysoPS) or nerve growth factor+lysoPS (completely inhibited by Gö6976 over the whole range of stimulus concentrations used) or compound 48/80 and mastoparan (no inhibition by Gö6976), stimulation with ionomycin, a known Ca(2+) ionophore, showed a concentration-dependent inhibition by Gö6976, with a major inhibition at low stimulus concentrations and a diminished one at higher ionomycin concentrations. The results indicate that ionomycin-induced degranulation is mainly induced via a PKC-independent signal cascade at high stimulus concentrations, whereas below a certain concentration, degranulation is completely dependent on PKC.
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Affiliation(s)
- Nao Nitta
- Central Laboratoty, ECI Inc., Meguro-ku, Tokyo, Japan
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46
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Nishimichi N, Higashikawa F, Kinoh HH, Tateishi Y, Matsuda H, Yokosaki Y. Polymeric osteopontin employs integrin alpha9beta1 as a receptor and attracts neutrophils by presenting a de novo binding site. J Biol Chem 2009; 284:14769-76. [PMID: 19346516 DOI: 10.1074/jbc.m901515200] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Osteopontin (OPN) is a cytokine and ligand for multiple members of the integrin family. OPN undergoes the in vivo polymerization catalyzed by cross-linking enzyme transglutaminase 2, which consequently increases the bioactivity through enhanced interaction with integrins. The integrin alpha9beta1, highly expressed on neutrophils, binds to the sequence SVVYGLR only after intact OPN is cleaved by thrombin. The SVVYGLR sequence appears to be cryptic in intact OPN because alpha9beta1 does not recognize intact OPN. Because transglutaminase 2-catalyzed polymers change their physical and chemical properties, we hypothesized that the SVVYGLR site might also be exposed on polymeric OPN. As expected, alpha9beta1 turned into a receptor for polymeric OPN, a result obtained by cell adhesion and migration assays with alpha9-transfected cells and by detection of direct binding of recombinant soluble alpha9beta1 with colorimetry and surface plasmon resonance analysis. Because the N-terminal fragment of thrombin-cleaved OPN, a ligand for alpha9beta1, has been reported to attract neutrophils, we next examined migration of neutrophils to polymeric OPN using time-lapse microscopy. Polymeric OPN showed potent neutrophil chemotactic activity, which was clearly inhibited by anti-alpha9beta1 antibody. Unexpectedly, mutagenesis studies showed that alpha9beta1 bound to polymeric OPN independently of the SVVYGLR sequence, and further, SVVYGLR sequence of polymeric OPN was cryptic because SVVYGLR-specific antibody did not recognize polymeric OPN. These results demonstrate that polymerization of OPN generates a novel alpha9beta1-binding site and that the interaction of this site with the alpha9beta1 integrin is critical to the neutrophil chemotaxis induced by polymeric OPN.
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Affiliation(s)
- Norihisa Nishimichi
- Cell-Matrix Frontier Laboratory, Biomedical Research Unit, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8551, Japan
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Bai Z, Hayasaka H, Kobayashi M, Li W, Guo Z, Jang MH, Kondo A, Choi BI, Iwakura Y, Miyasaka M. CXC Chemokine Ligand 12 Promotes CCR7-Dependent Naive T Cell Trafficking to Lymph Nodes and Peyer’s Patches. THE JOURNAL OF IMMUNOLOGY 2009; 182:1287-95. [DOI: 10.4049/jimmunol.182.3.1287] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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48
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Ito A, Suganami T, Yamauchi A, Degawa-Yamauchi M, Tanaka M, Kouyama R, Kobayashi Y, Nitta N, Yasuda K, Hirata Y, Kuziel WA, Takeya M, Kanegasaki S, Kamei Y, Ogawa Y. Role of CC Chemokine Receptor 2 in Bone Marrow Cells in the Recruitment of Macrophages into Obese Adipose Tissue. J Biol Chem 2008; 283:35715-23. [DOI: 10.1074/jbc.m804220200] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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49
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Saito K, Torii M, Ma N, Tsuchiya T, Wang L, Hori T, Nagakubo D, Nitta N, Kanegasaki S, Hieshima K, Yoshie O, Gabazza EC, Katayama N, Shiku H, Kuribayashi K, Kato T. Differential Regulatory Function of Resting and Preactivated Allergen-Specific CD4+CD25+ Regulatory T Cells in Th2-Type Airway Inflammation. THE JOURNAL OF IMMUNOLOGY 2008; 181:6889-97. [DOI: 10.4049/jimmunol.181.10.6889] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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50
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Combining microchip and cell technology for creation of novel biodevices. Anal Bioanal Chem 2008; 393:23-9. [DOI: 10.1007/s00216-008-2450-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2008] [Revised: 09/26/2008] [Accepted: 09/30/2008] [Indexed: 02/06/2023]
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