1
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Zhu Q, Chen N, Tian X, Zhou Y, You Q, Xu X. Hematopoietic Progenitor Kinase 1 in Tumor Immunology: A Medicinal Chemistry Perspective. J Med Chem 2022; 65:8065-8090. [PMID: 35696642 DOI: 10.1021/acs.jmedchem.2c00172] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hematopoietic progenitor kinase 1 (HPK1), a hematopoietic cell-restricted member of the serine/threonine Ste20-related protein kinases, is a negative regulator of the T cell receptor, B cell receptor, and dendritic cells. Loss of HPK1 kinase function increases cytokine secretion and enhances T cell signaling, virus clearance, and tumor growth inhibition. Therefore, HPK1 is considered a promising target for tumor immunotherapy. Several HPK1 inhibitors have been reported to regulate T cell function. In addition, HPK1-targeting PROTACs, which can induce the degradation of HPK1, have also been developed. Here, we provide an overview of research concerning HPK1 protein structure, function, and inhibitors and propose perspectives and insights for the future development of agents targeting HPK1.
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Affiliation(s)
- Qiangsheng Zhu
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Nannan Chen
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Xinjian Tian
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Yeling Zhou
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - QiDong You
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Xiaoli Xu
- State Key Laboratory of Natural Medicines and Jiang Su Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
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2
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Bader A, Winkelmann M, Forné I, Walzog B, Maier-Begandt D. Decoding the signaling profile of hematopoietic progenitor kinase 1 (HPK1) in innate immunity: a proteomic approach. Eur J Immunol 2022; 52:760-769. [PMID: 35099066 DOI: 10.1002/eji.202149283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 12/06/2021] [Accepted: 01/14/2022] [Indexed: 11/10/2022]
Abstract
Signaling via β2 integrins (CD11/CD18) as well as T and B cell receptors involves similar pathways. However, the activation of the same signaling molecule can result in opposing effects. One such example is the hematopoietic progenitor kinase 1 (HPK1), which negatively regulates T and B cell activation but enforces neutrophil adhesion via β2 integrins. This difference may be defined by specific HPK1 interacting networks in different leukocyte subsets which have already been described in the adaptive immune system. Here, we set out to identify interacting proteins of HPK1 in neutrophil-like differentiated HL-60 cells exposed to immobilized fibrinogen and left non-activated or Mn2+ -activated to allow β2 integrin-dependent adhesion. Co-immunoprecipitation experiments followed by mass spectrometry led to the identification of 115 HPK1-interacting proteins. 58 proteins were found only in non-activated cells and 39 proteins only in Mn2+ -activated adherent cells. From these results we decoded a pre-existing signaling cluster of HPK1 in non-activated cells encompassing proteins essential for β2 integrin-mediated signaling during neutrophil trafficking, namely DNAX-activation protein 12 (DAP12), spleen tyrosine kinase (Syk) and Rac1. Thus, our study provides novel insights into the complex architecture of the signaling processes during neutrophil activation and the complex signaling profile of HPK1 in leukocytes. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Almke Bader
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Planegg-Martinsried, 82152, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, 81377, Germany
| | - Michael Winkelmann
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Planegg-Martinsried, 82152, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, 81377, Germany.,Department of Radiology, University Hospital, LMU Munich, Munich, 81377, Germany
| | - Ignasi Forné
- Protein Analysis Unit, Biomedical Center, LMU Munich, Planegg-Martinsried, 82152, Germany
| | - Barbara Walzog
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Planegg-Martinsried, 82152, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, 81377, Germany
| | - Daniela Maier-Begandt
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Planegg-Martinsried, 82152, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, 81377, Germany
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3
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Bouti P, Webbers SDS, Fagerholm SC, Alon R, Moser M, Matlung HL, Kuijpers TW. β2 Integrin Signaling Cascade in Neutrophils: More Than a Single Function. Front Immunol 2021; 11:619925. [PMID: 33679708 PMCID: PMC7930317 DOI: 10.3389/fimmu.2020.619925] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/31/2020] [Indexed: 12/13/2022] Open
Abstract
Neutrophils are the most prevalent leukocytes in the human body. They have a pivotal role in the innate immune response against invading bacterial and fungal pathogens, while recent emerging evidence also demonstrates their role in cancer progression and anti-tumor responses. The efficient execution of many neutrophil effector responses requires the presence of β2 integrins, in particular CD11a/CD18 or CD11b/CD18 heterodimers. Although extensively studied at the molecular level, the exact signaling cascades downstream of β2 integrins still remain to be fully elucidated. In this review, we focus mainly on inside-out and outside-in signaling of these two β2 integrin members expressed on neutrophils and describe differences between various neutrophil stimuli with respect to integrin activation, integrin ligand binding, and the pertinent differences between mouse and human studies. Last, we discuss how integrin signaling studies could be used to explore the therapeutic potential of targeting β2 integrins and the intracellular signaling cascade in neutrophils in several, among other, inflammatory conditions in which neutrophil activity should be dampened to mitigate disease.
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Affiliation(s)
- Panagiota Bouti
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Steven D S Webbers
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Department of Pediatric Immunology, Rheumatology and Infectious Disease, Amsterdam University Medical Center (AUMC), Emma Children's Hospital, University of Amsterdam, Amsterdam, Netherlands
| | - Susanna C Fagerholm
- Research Program of Molecular and Integrative Biosciences, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Ronen Alon
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Markus Moser
- Institute of Experimental Hematology, School of Medicine, Technical University of Munich, Munich, Germany
| | - Hanke L Matlung
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Taco W Kuijpers
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Department of Pediatric Immunology, Rheumatology and Infectious Disease, Amsterdam University Medical Center (AUMC), Emma Children's Hospital, University of Amsterdam, Amsterdam, Netherlands
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4
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Sawasdikosol S, Burakoff S. A perspective on HPK1 as a novel immuno-oncology drug target. eLife 2020; 9:55122. [PMID: 32896273 PMCID: PMC7478889 DOI: 10.7554/elife.55122] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 08/28/2020] [Indexed: 12/11/2022] Open
Abstract
In this perspective review, the role Hematopoietic Progenitor Kinase 1 (HPK1) in tumor immunity will be reviewed, with special emphasis on how T cells are negatively-regulated at different junctures of cancer-immunity cycle by this regulatory kinase. The review will highlight the strengths and weaknesses of HPK1 as a candidate target for novel immuno-oncology (IO) drug development that is centered on the use of small molecule kinase inhibitor to modulate the immune response against cancer. Such a therapeutic approach, if proven successful, could supplement the cancer cell-centric standard of care therapies in order to fully meet the therapeutic needs of cancer patients.
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Affiliation(s)
- Sansana Sawasdikosol
- Tisch Cancer Institute, Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, United States
| | - Steven Burakoff
- Tisch Cancer Institute, Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, United States
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5
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Lindemann O, Rossaint J, Najder K, Schimmelpfennig S, Hofschröer V, Wälte M, Fels B, Oberleithner H, Zarbock A, Schwab A. Intravascular adhesion and recruitment of neutrophils in response to CXCL1 depends on their TRPC6 channels. J Mol Med (Berl) 2020; 98:349-360. [PMID: 31950205 PMCID: PMC7080674 DOI: 10.1007/s00109-020-01872-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 12/21/2019] [Accepted: 01/03/2020] [Indexed: 02/07/2023]
Abstract
Abstract Here we report a novel role for TRPC6, a member of the transient receptor potential (TRPC) channel family, in the CXCL1-dependent recruitment of murine neutrophil granulocytes. Representing a central element of the innate immune system, neutrophils are recruited from the blood stream to a site of inflammation. The recruitment process follows a well-defined sequence of events including adhesion to the blood vessel walls, migration, and chemotaxis to reach the inflammatory focus. A common feature of the underlying signaling pathways is the utilization of Ca2+ ions as intracellular second messengers. However, the required Ca2+ influx channels are not yet fully characterized. We used WT and TRPC6−/− neutrophils for in vitro and TRPC6−/− chimeric mice (WT mice with WT or TRPC6−/− bone marrow cells) for in vivo studies. After renal ischemia and reperfusion injury, TRPC6−/− chimeric mice had an attenuated TRPC6−/− neutrophil recruitment and a better outcome as judged from the reduced increase in the plasma creatinine concentration. In the cremaster model CXCL1-induced neutrophil adhesion, arrest and transmigration were also decreased in chimeric mice with TRPC6−/− neutrophils. Using atomic force microscopy and microfluidics, we could attribute the recruitment defect of TRPC6−/− neutrophils to the impact of the channel on adhesion to endothelial cells. Mechanistically, TRPC6−/− neutrophils exhibited lower Ca2+ transients during the initial adhesion leading to diminished Rap1 and β2 integrin activation and thereby reduced ICAM-1 binding. In summary, our study reveals that TRPC6 channels in neutrophils are crucial signaling modules in their recruitment from the blood stream in response to CXCL1. Key point Neutrophil TRPC6 channels are crucial for CXCL1-triggered activation of integrins during the initial steps of neutrophil recruitment.
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Affiliation(s)
- Otto Lindemann
- Institute of Physiology II, Westfälische Wilhelms-Universität, Münster, Germany
| | - Jan Rossaint
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Münster, Germany
| | - Karolina Najder
- Institute of Physiology II, Westfälische Wilhelms-Universität, Münster, Germany
| | | | - Verena Hofschröer
- Institute of Physiology II, Westfälische Wilhelms-Universität, Münster, Germany
| | - Mike Wälte
- Institute of Physiology II, Westfälische Wilhelms-Universität, Münster, Germany.,Institute of Cell Dynamics and Imaging, Westfälische Wilhelms-Universität, Münster, Germany
| | - Benedikt Fels
- Institute of Physiology II, Westfälische Wilhelms-Universität, Münster, Germany
| | - Hans Oberleithner
- Institute of Physiology II, Westfälische Wilhelms-Universität, Münster, Germany
| | - Alexander Zarbock
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Münster, Germany
| | - Albrecht Schwab
- Institute of Physiology II, Westfälische Wilhelms-Universität, Münster, Germany.
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6
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Salvermoser M, Begandt D, Alon R, Walzog B. Nuclear Deformation During Neutrophil Migration at Sites of Inflammation. Front Immunol 2018; 9:2680. [PMID: 30505310 PMCID: PMC6250837 DOI: 10.3389/fimmu.2018.02680] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 10/30/2018] [Indexed: 12/22/2022] Open
Abstract
Cell migration is indispensable for various biological processes including angiogenesis, wound healing, and immunity. In general, there are two different migration modes described, the mesenchymal migration mode and the amoeboid migration mode. Neutrophils rapidly migrate toward the sites of injury, infection, and inflammation using the amoeboid migration mode which is characterized by cell polarization and a high migration velocity. During site-directed trafficking of neutrophils from the blood stream into the inflamed tissue, neutrophils must first withstand shear stress while migrating on the 2-dimensional endothelial surface. Subsequently, they have to cross different physical barriers during the extravasation process including the squeezing through the compact endothelial monolayer that comprises the blood vessel, the underlining basement membrane and then the 3-dimensional meshwork of extracellular matrix (ECM) proteins in the tissue. Therefore, neutrophils have to rapidly switch between distinct migration modes such as intraluminal crawling, transmigration, and interstitial migration to pass these different confinements and mechanical barriers. The nucleus is the largest and stiffest organelle in every cell and is therefore the key cellular element involved in cellular migration through variable confinements. This review highlights the importance of nuclear deformation during neutrophil crossing of such confinements, with a focus on transendothelial migration and interstitial migration. We discuss the key molecular components involved in the nuclear shape changes that underlie neutrophil motility and squeezing through cellular and ECM barriers. Understanding the precise molecular mechanisms that orchestrate these distinct neutrophil migration modes introduces an opportunity to develop new therapeutic concepts for controlling pathological neutrophil-driven inflammation.
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Affiliation(s)
- Melanie Salvermoser
- Walter-Brendel-Centre of Experimental Medicine, University Hospital, Planegg-Martinsried, Germany
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Planegg-Martinsried, Germany
| | - Daniela Begandt
- Walter-Brendel-Centre of Experimental Medicine, University Hospital, Planegg-Martinsried, Germany
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Planegg-Martinsried, Germany
| | - Ronen Alon
- Department of Immunology, The Weizmann Institute of Science, Rehovot, Israel
| | - Barbara Walzog
- Walter-Brendel-Centre of Experimental Medicine, University Hospital, Planegg-Martinsried, Germany
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Planegg-Martinsried, Germany
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7
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Weckbach LT, Preissner KT, Deindl E. The Role of Midkine in Arteriogenesis, Involving Mechanosensing, Endothelial Cell Proliferation, and Vasodilation. Int J Mol Sci 2018; 19:E2559. [PMID: 30158425 PMCID: PMC6163309 DOI: 10.3390/ijms19092559] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/17/2018] [Accepted: 08/22/2018] [Indexed: 12/12/2022] Open
Abstract
Mechanical forces in blood circulation such as shear stress play a predominant role in many physiological and pathophysiological processes related to vascular responses or vessel remodeling. Arteriogenesis, defined as the growth of pre-existing arterioles into functional collateral arteries compensating for stenosed or occluded arteries, is such a process. Midkine, a pleiotropic protein and growth factor, has originally been identified to orchestrate embryonic development. In the adult organism its expression is restricted to distinct tissues (including tumors), whereby midkine is strongly expressed in inflamed tissue and has been shown to promote inflammation. Recent investigations conferred midkine an important function in vascular remodeling and growth. In this review, we introduce the midkine gene and protein along with its cognate receptors, and highlight its role in inflammation and the vascular system with special emphasis on arteriogenesis, particularly focusing on shear stress-mediated vascular cell proliferation and vasodilatation.
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Affiliation(s)
- Ludwig T Weckbach
- Medizinische Klinik und Poliklinik I, Klinikum der Universität, LMU Munich, 81377 Munich, Germany.
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, 82152 Planegg-Martinsried, Germany.
- Walter-Brendel-Centre of Experimental Medicine, University Hospital, LMU Munich, 81377 Munich, Germany.
| | - Klaus T Preissner
- Institute of Biochemistry, Medical School, Justus-Liebig-University, 35390 Giessen, Germany.
| | - Elisabeth Deindl
- Walter-Brendel-Centre of Experimental Medicine, University Hospital, LMU Munich, 81377 Munich, Germany.
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8
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Rienks M, Carai P, van Teeffelen J, Eskens B, Verhesen W, Hemmeryckx B, Johnson DM, van Leeuwen R, Jones EA, Heymans S, Papageorgiou AP. SPARC preserves endothelial glycocalyx integrity, and protects against adverse cardiac inflammation and injury during viral myocarditis. Matrix Biol 2018; 74:21-34. [PMID: 29730504 DOI: 10.1016/j.matbio.2018.04.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 04/29/2018] [Accepted: 04/30/2018] [Indexed: 12/24/2022]
Abstract
Myocardial damage as a consequence of cardiotropic viruses leads to a broad variety of clinical presentations and is still a complicated condition to diagnose and treat. Whereas the extracellular matrix protein Secreted Protein Acidic and Rich in Cysteine or SPARC has been implicated in hypertensive and ischemic heart disease by modulating collagen production and cross-linking, its role in cardiac inflammation and endothelial function is yet unknown. Absence of SPARC in mice resulted in increased cardiac inflammation and mortality, and reduced cardiac systolic function upon coxsackievirus-B3 induced myocarditis. Intra-vital microscopic imaging of the microvasculature of the cremaster muscle combined with electron microscopic imaging of the microvasculature of the cardiac muscle uncovered the significance of SPARC in maintaining endothelial glycocalyx integrity and subsequent barrier properties to stop inflammation. Moreover, systemic administration of recombinant SPARC restored the endothelial glycocalyx and consequently reversed the increase in inflammation and mortality observed in SPARC KO mice in response to viral exposure. Reducing the glycocalyx in vivo by systemic administration of hyaluronidase, an enzyme that degrades the endothelial glycocalyx, mimicked the barrier defects found in SPARC KO mice, which could be restored by subsequent administration of recombinant SPARC. In conclusion, the secreted glycoprotein SPARC protects against adverse cardiac inflammation and mortality by improving the glycocalyx function and resulting endothelial barrier function during viral myocarditis.
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Affiliation(s)
- Marieke Rienks
- Cardiovascular Department, King's College London, United Kingdom; Center for Heart Failure Research, Cardiovascular Research Institute Maastricht, The Netherlands.
| | - Paolo Carai
- Center for Heart Failure Research, Cardiovascular Research Institute Maastricht, The Netherlands
| | | | - Bart Eskens
- Department of Physiology, Maastricht University, The Netherlands
| | - Wouter Verhesen
- Cardiovascular Department, King's College London, United Kingdom
| | - Bianca Hemmeryckx
- Molecular and Vascular Biology, Department of Cardiovascular Sciences, KU, Leuven, Belgium
| | - Daniel M Johnson
- Center for Heart Failure Research, Cardiovascular Research Institute Maastricht, The Netherlands
| | - Rick van Leeuwen
- Center for Heart Failure Research, Cardiovascular Research Institute Maastricht, The Netherlands
| | - Elizabeth A Jones
- Molecular and Vascular Biology, Department of Cardiovascular Sciences, KU, Leuven, Belgium
| | - Stephane Heymans
- Center for Heart Failure Research, Cardiovascular Research Institute Maastricht, The Netherlands; Molecular and Vascular Biology, Department of Cardiovascular Sciences, KU, Leuven, Belgium; Netherlands Heart Institute, ICIN, Utrecht, The Netherlands
| | - Anna-Pia Papageorgiou
- Center for Heart Failure Research, Cardiovascular Research Institute Maastricht, The Netherlands; Molecular and Vascular Biology, Department of Cardiovascular Sciences, KU, Leuven, Belgium
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9
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Myosin 1f is specifically required for neutrophil migration in 3D environments during acute inflammation. Blood 2018; 131:1887-1898. [PMID: 29487067 DOI: 10.1182/blood-2017-10-811851] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 02/21/2018] [Indexed: 01/13/2023] Open
Abstract
Neutrophil extravasation and interstitial migration are important steps during the recruitment of neutrophils to sites of inflammation. In the present study, we addressed the functional importance of the unconventional class I myosin 1f (Myo1f) for neutrophil trafficking during acute inflammation. In contrast to leukocyte rolling and adhesion, the genetic absence of Myo1f severely compromised neutrophil extravasation into the inflamed mouse cremaster tissue when compared with Myo1f+/+ mice as studied by intravital microscopy. Similar results were obtained in experimental models of acute peritonitis and acute lung injury. In contrast to 2-dimensional migration, which occurred independently of Myo1f, Myo1f was indispensable for neutrophil migration in 3-dimensional (3D) environments, that is, transmigration and migration in collagen networks as it regulated squeezing and dynamic deformation of the neutrophil nucleus during migration through physical barriers. Thus, we provide evidence for an important role of Myo1f in neutrophil trafficking during inflammation by specifically regulating neutrophil extravasation and migration in 3D environments.
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10
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Zhang Q, Ding S, Zhang H. Interactions between hematopoietic progenitor kinase 1 and its adaptor proteins. Mol Med Rep 2017; 16:6472-6482. [DOI: 10.3892/mmr.2017.7494] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 07/31/2017] [Indexed: 11/06/2022] Open
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11
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Braga D, Barcella M, D’Avila F, Lupoli S, Tagliaferri F, Santamaria MH, DeLano FA, Baselli G, Schmid-Schönbein GW, Kistler EB, Aletti F, Barlassina C. Preliminary profiling of blood transcriptome in a rat model of hemorrhagic shock. Exp Biol Med (Maywood) 2017; 242:1462-1470. [PMID: 28661205 PMCID: PMC5544169 DOI: 10.1177/1535370217717978] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 06/06/2017] [Indexed: 12/31/2022] Open
Abstract
Hemorrhagic shock is a leading cause of morbidity and mortality worldwide. Significant blood loss may lead to decreased blood pressure and inadequate tissue perfusion with resultant organ failure and death, even after replacement of lost blood volume. One reason for this high acuity is that the fundamental mechanisms of shock are poorly understood. Proteomic and metabolomic approaches have been used to investigate the molecular events occurring in hemorrhagic shock but, to our knowledge, a systematic analysis of the transcriptomic profile is missing. Therefore, a pilot analysis using paired-end RNA sequencing was used to identify changes that occur in the blood transcriptome of rats subjected to hemorrhagic shock after blood reinfusion. Hemorrhagic shock was induced using a Wigger's shock model. The transcriptome of whole blood from shocked animals shows modulation of genes related to inflammation and immune response (Tlr13, Il1b, Ccl6, Lgals3), antioxidant functions (Mt2A, Mt1), tissue injury and repair pathways (Gpnmb, Trim72) and lipid mediators (Alox5ap, Ltb4r, Ptger2) compared with control animals. These findings are congruent with results obtained in hemorrhagic shock analysis by other authors using metabolomics and proteomics. The analysis of blood transcriptome may be a valuable tool to understand the biological changes occurring in hemorrhagic shock and a promising approach for the identification of novel biomarkers and therapeutic targets. Impact statement This study provides the first pilot analysis of the changes occurring in transcriptome expression of whole blood in hemorrhagic shock (HS) rats. We showed that the analysis of blood transcriptome is a useful approach to investigate pathways and functional alterations in this disease condition. This pilot study encourages the possible application of transcriptome analysis in the clinical setting, for the molecular profiling of whole blood in HS patients.
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Affiliation(s)
- D Braga
- Dipartimento di Scienze della Salute,
Università Degli Studi di Milano, Milan 20142, Italy
- Fondazione Filarete, Milan 20139, Italy
| | - M Barcella
- Dipartimento di Scienze della Salute,
Università Degli Studi di Milano, Milan 20142, Italy
- Fondazione Filarete, Milan 20139, Italy
| | - F D’Avila
- Dipartimento di Scienze della Salute,
Università Degli Studi di Milano, Milan 20142, Italy
- Fondazione Filarete, Milan 20139, Italy
| | - S Lupoli
- Dipartimento di Scienze della Salute,
Università Degli Studi di Milano, Milan 20142, Italy
- Fondazione Filarete, Milan 20139, Italy
| | | | - MH Santamaria
- Department of Bioengineering, University of
California San Diego, La Jolla, CA 92093, USA
| | - FA DeLano
- Department of Bioengineering, University of
California San Diego, La Jolla, CA 92093, USA
| | - G Baselli
- Dipartimento di Elettronica, Informazione e
Bioingegneria, Politecnico di Milano, Milan 20133, Italy
| | - GW Schmid-Schönbein
- Department of Bioengineering, University of
California San Diego, La Jolla, CA 92093, USA
| | - EB Kistler
- Department of Anesthesiology & Critical
Care, VA San Diego Healthcare System, San Diego, CA 92103, USA
| | - F Aletti
- Department of Bioengineering, University of
California San Diego, La Jolla, CA 92093, USA
- Dipartimento di Elettronica, Informazione e
Bioingegneria, Politecnico di Milano, Milan 20133, Italy
| | - C Barlassina
- Dipartimento di Scienze della Salute,
Università Degli Studi di Milano, Milan 20142, Italy
- Fondazione Filarete, Milan 20139, Italy
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12
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Begandt D, Thome S, Sperandio M, Walzog B. How neutrophils resist shear stress at blood vessel walls: molecular mechanisms, subcellular structures, and cell-cell interactions. J Leukoc Biol 2017; 102:699-709. [PMID: 28619950 DOI: 10.1189/jlb.3mr0117-026rr] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/27/2017] [Accepted: 04/28/2017] [Indexed: 12/22/2022] Open
Abstract
Neutrophils are the first cells arriving at sites of tissue injury or infection to combat invading pathogens. Successful neutrophil recruitment to sites of inflammation highly depends on specific molecular mechanisms, fine-tuning the received information into signaling pathways and converting them into well-described recruitment steps. This review highlights the impact of vascular flow conditions on neutrophil recruitment and the multitude of mechanisms developed to enable this sophisticated process under wall shear stress conditions. The recruitment process underlies a complex interplay between adhesion and signaling molecules, as well as chemokines, in which neutrophils developed specific mechanisms to travel to sites of lesion in low and high shear stress conditions. Rolling, as the first step in the recruitment process, highly depends on endothelial selectins and their ligands on neutrophils, inducting of intracellular signaling and subsequently activating β2 integrins, enabling adhesion and postadhesion events. In addition, subcellular structures, such as microvilli, tethers, and slings allow the cell to arrest, even under high wall shear stress. Thereby, microvilli that are pulled out from the cell body form tethers that develop into slings upon their detachment from the substrate. In addition to the above-described primary capture, secondary capture of neutrophils via neutrophil-neutrophil or neutrophil-platelet interaction promotes the process of neutrophil recruitment to sites of lesion. Thus, precise mechanisms based on a complex molecular interplay, subcellular structures, and cell-cell interactions turn the delicate process of neutrophil trafficking during flow into a robust response allowing effective neutrophil accumulation at sites of injury.
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Affiliation(s)
- Daniela Begandt
- Walter Brendel Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Sarah Thome
- Walter Brendel Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Markus Sperandio
- Walter Brendel Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Barbara Walzog
- Walter Brendel Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany.
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Tomos IP, Tzouvelekis A, Aidinis V, Manali ED, Bouros E, Bouros D, Papiris SA. Extracellular matrix remodeling in idiopathic pulmonary fibrosis. It is the 'bed' that counts and not 'the sleepers'. Expert Rev Respir Med 2017; 11:299-309. [PMID: 28274188 DOI: 10.1080/17476348.2017.1300533] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive interstitial lung disease characterized by irreversible fibrosis. Current disease pathogenesis assumes an aberrant wound healing process in response to repetitive injurious stimuli leading to apoptosis of epithelial cells, activation of fibroblasts and accumulation of extracellular matrix (ECM). Particularly, lung ECM is a highly dynamic structure that lies at the core of several physiological and developmental pathways. The scope of this review article is to summarize current knowledge on the role of ECM in the pathogenesis of IPF, unravel novel mechanistic data and identify future more effective therapeutic targets. Areas covered: The exact mechanisms through which lung microenvironment activates fibroblasts and inflammatory cells, regulates profibrotic signaling cascades through growth factors, integrins and degradation enzymes ultimately leading to excessive matrix deposition are discussed. Furthermore, the potential therapeutic usefulness of specific inhibitors of matrix deposition or activators of matrix degradation pathways are also presented. Expert commentary: With a gradually increasing worldwide incidence IPF still present a major challenge in clinical research due to its unknown etiopathogenesis and current ineffective treatment approaches. Today, there is an amenable need for more effective therapeutic targets and ECM components may represent one.
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Affiliation(s)
- Ioannis P Tomos
- a Respiratory Medicine Department , 'Attikon' University Hospital, Athens Medical School, National and Kapodistrian University of Athens , Athens , Greece
| | - Argyrios Tzouvelekis
- b Division of Immunology , Biomedical Sciences Research Center 'Alexander Fleming,' , Athens , Greece
| | - Vassilis Aidinis
- b Division of Immunology , Biomedical Sciences Research Center 'Alexander Fleming,' , Athens , Greece
| | - Effrosyni D Manali
- a Respiratory Medicine Department , 'Attikon' University Hospital, Athens Medical School, National and Kapodistrian University of Athens , Athens , Greece
| | - Evangelos Bouros
- c First Academic Department of Pneumonology, Hospital for Diseases of the Chest, 'Sotiria,' Medical School , National and Kapodistrian University of Athens , Athens , Greece
| | - Demosthenes Bouros
- c First Academic Department of Pneumonology, Hospital for Diseases of the Chest, 'Sotiria,' Medical School , National and Kapodistrian University of Athens , Athens , Greece
| | - Spyros A Papiris
- a Respiratory Medicine Department , 'Attikon' University Hospital, Athens Medical School, National and Kapodistrian University of Athens , Athens , Greece
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Role of Drebrin at the Immunological Synapse. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1006:271-280. [PMID: 28865025 DOI: 10.1007/978-4-431-56550-5_15] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Although drebrin was first described in neurons, it is also expressed in cells of the immune system, such as T lymphocytes and mast cells. Another member of the drebrin family of proteins, mammalian actin-binding protein 1 (mAbp-1) is more widely expressed and plays important roles in the function of macrophages, polymorphonuclear neutrophils, and B lymphocytes. We will briefly discuss on the function of mAbp-1 and drebrin in immune cells with emphasis on T cells. Specifically, drebrin enables the immune responses of CD4+ T lymphocytes. T cells are activated after the recognition of an antigen presented by antigen-presenting cells through cognate cell-cell contacts called immunological synapses (IS). In CD4+ T cells, drebrin associates with the chemokine receptor CXCR4, and both molecules redistribute to the IS displaying similar dynamics. Through its interaction with CXCR4 and the actin cytoskeleton, drebrin regulates T cell activation. CD4+ T cells are one of the main targets for the human immunodeficiency virus (HIV)-1. This virus utilizes the IS structure to be transmitted to uninfected cells, forming cell-cell contacts called virological synapses (VS). Interestingly, drebrin negatively regulates HIV-1 infection of CD4+ T lymphocytes, by regulating actin polymerization at the VS.
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Abstract
Neutrophils play a critical role in antimicrobial host defense, but their improper activation also contributes to inflammation-induced tissue damage. Therefore, understanding neutrophil biology is important for the understanding, diagnosis, and therapy of both infectious and inflammatory diseases. Neutrophils express a large number of cell-surface receptors that sense extracellular cues and trigger various functional responses through complex intracellular signaling pathways. During the last several years, we and others have shown that tyrosine kinases play a critical role in those processes. In particular, Src-family and Syk tyrosine kinases couple Fc-receptors and adhesion receptors (integrins and selectins) to various neutrophil effector functions. This pathway shows surprising similarity to lymphocyte antigen receptor signaling and involves various other enzymes (e.g. PLCγ2), exchange factors (e.g. Vav-family members) and adapter proteins (such as ITAM-containing adapters, SLP-76, and CARD9). Those mediators trigger various antimicrobial functions and play a critical role in coordinating the inflammatory response through the release of inflammatory mediators, such as chemokines and LTB4 . Interestingly, however, tyrosine kinases have a limited direct role in the migration of neutrophils to the site of inflammation. Here, we review the role of tyrosine kinase signaling pathways in neutrophils and how those pathways contribute to neutrophil activation in health and disease.
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Affiliation(s)
- Krisztina Futosi
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
- MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Budapest, Hungary
- MTA-SE "Lendület" Inflammation Physiology Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
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Chen W, Spitzl A, Mathes D, Nikolaev VO, Werner F, Weirather J, Špiranec K, Röck K, Fischer JW, Kämmerer U, Stegner D, Baba HA, Hofmann U, Frantz S, Kuhn M. Endothelial Actions of ANP Enhance Myocardial Inflammatory Infiltration in the Early Phase After Acute Infarction. Circ Res 2016; 119:237-48. [PMID: 27142162 DOI: 10.1161/circresaha.115.307196] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 03/03/2016] [Indexed: 12/21/2022]
Abstract
RATIONALE In patients after acute myocardial infarction (AMI), the initial extent of necrosis and inflammation determine clinical outcome. One early event in AMI is the increased cardiac expression of atrial natriuretic peptide (NP) and B-type NP, with their plasma levels correlating with severity of ischemia. It was shown that NPs, via their cGMP-forming guanylyl cyclase-A (GC-A) receptor and cGMP-dependent kinase I (cGKI), strengthen systemic endothelial barrier properties in acute inflammation. OBJECTIVE We studied whether endothelial actions of local NPs modulate myocardial injury and early inflammation after AMI. METHODS AND RESULTS Necrosis and inflammation after experimental AMI were compared between control mice and littermates with endothelial-restricted inactivation of GC-A (knockout mice with endothelial GC-A deletion) or cGKI (knockout mice with endothelial cGKI deletion). Unexpectedly, myocardial infarct size and neutrophil infiltration/activity 2 days after AMI were attenuated in knockout mice with endothelial GC-A deletion and unaltered in knockout mice with endothelial cGKI deletion. Molecular studies revealed that hypoxia and tumor necrosis factor-α, conditions accompanying AMI, reduce the endothelial expression of cGKI and enhance cGMP-stimulated phosphodiesterase 2A (PDE2A) levels. Real-time cAMP measurements in endothelial microdomains using a novel fluorescence resonance energy transfer biosensor revealed that PDE2 mediates NP/cGMP-driven decreases of submembrane cAMP levels. Finally, intravital microscopy studies of the mouse cremaster microcirculation showed that tumor necrosis factor-α-induced endothelial NP/GC-A/cGMP/PDE2 signaling impairs endothelial barrier functions. CONCLUSIONS Hypoxia and cytokines, such as tumor necrosis factor-α, modify the endothelial postreceptor signaling pathways of NPs, with downregulation of cGKI, induction of PDE2A, and altered cGMP/cAMP cross talk. Increased expression of PDE2 can mediate hyperpermeability effects of paracrine endothelial NP/GC-A/cGMP signaling and facilitate neutrophil extravasation during the early phase after MI.
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Affiliation(s)
- Wen Chen
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Annett Spitzl
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Denise Mathes
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Viacheslav O Nikolaev
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Franziska Werner
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Johannes Weirather
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Katarina Špiranec
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Katharina Röck
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Jens W Fischer
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Ulrike Kämmerer
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - David Stegner
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Hideo A Baba
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Ulrich Hofmann
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Stefan Frantz
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.)
| | - Michaela Kuhn
- From the Institute of Physiology (W.C., A.S., F.W., K.Š., M.K.), Comprehensive Heart Failure Center (D.M., J.W., U.H., S.F., M.K.), and Department of Experimental Biomedicine and Rudolf Virchow Center for Experimental Biomedicine (D.S.), University of Würzburg, Würzburg, Germany; Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (V.O.N.); Institut für Pharmakologie und Klinische Pharmakologie und CARID, Universitätsklinikum der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany (K.R., J.W.F.); Department of Obstetrics and Gynecology, University Hospital Würzburg, Würzburg, Germany (U.K.); Institute of Pathology, University Duisburg-Essen, Essen, Germany (H.A.B.); and Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), Halle (Saale), Germany (U.H., S.F.).
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Mócsai A, Walzog B, Lowell CA. Intracellular signalling during neutrophil recruitment. Cardiovasc Res 2015; 107:373-85. [PMID: 25998986 PMCID: PMC4502828 DOI: 10.1093/cvr/cvv159] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 05/19/2015] [Indexed: 12/29/2022] Open
Abstract
Recruitment of leucocytes such as neutrophils to the extravascular space is a critical step of the inflammation process and plays a major role in the development of various diseases including several cardiovascular diseases. Neutrophils themselves play a very active role in that process by sensing their environment and responding to the extracellular cues by adhesion and de-adhesion, cellular shape changes, chemotactic migration, and other effector functions of cell activation. Those responses are co-ordinated by a number of cell surface receptors and their complex intracellular signal transduction pathways. Here, we review neutrophil signal transduction processes critical for recruitment to the site of inflammation. The two key requirements for neutrophil recruitment are the establishment of appropriate chemoattractant gradients and the intrinsic ability of the cells to migrate along those gradients. We will first discuss signalling steps required for sensing extracellular chemoattractants such as chemokines and lipid mediators and the processes (e.g. PI3-kinase pathways) leading to the translation of extracellular chemoattractant gradients to polarized cellular responses. We will then discuss signal transduction by leucocyte adhesion receptors (e.g. tyrosine kinase pathways) which are critical for adhesion to, and migration through the vessel wall. Finally, additional neutrophil signalling pathways with an indirect effect on the neutrophil recruitment process, e.g. through modulation of the inflammatory environment, will be discussed. Mechanistic understanding of these pathways provide better understanding of the inflammation process and may point to novel therapeutic strategies for controlling excessive inflammation during infection or tissue damage.
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Affiliation(s)
- Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, Tűzoltó utca 37-47, 1094 Budapest, Hungary MTA-SE 'Lendület' Inflammation Physiology Research Group of the Hungarian Academy of Sciences and the Semmelweis University, 1094 Budapest, Hungary
| | - Barbara Walzog
- Department of Cardiovascular Physiology and Pathophysiology, Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-University, 80336 Munich, Germany
| | - Clifford A Lowell
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
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Abstract
Neutrophils, the most abundant human immune cells, are rapidly recruited to sites of infection, where they fulfill their life-saving antimicrobial functions. While traditionally regarded as short-lived phagocytes, recent findings on long-term survival, neutrophil extracellular trap (NET) formation, heterogeneity and plasticity, suppressive functions, and tissue injury have expanded our understanding of their diverse role in infection and inflammation. This review summarises our current understanding of neutrophils in host-pathogen interactions and disease involvement, illustrating the versatility and plasticity of the neutrophil, moving between host defence, immune modulation, and tissue damage.
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Germena G, Volmering S, Sohlbach C, Zarbock A. Mutation in the CD45 inhibitory wedge modulates integrin activation and leukocyte recruitment during inflammation. THE JOURNAL OF IMMUNOLOGY 2014; 194:728-38. [PMID: 25505282 DOI: 10.4049/jimmunol.1401646] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Neutrophil recruitment to the site of inflammation plays a pivotal role in host defense. Src family kinases (SFKs) activation is required for integrin and chemokine signaling as well as immune cell function. The receptor-like protein tyrosine phosphatase CD45 positively regulates chemoattractant signaling acting on SFK activity. To further investigate the role of CD45 in neutrophil recruitment and function, we analyzed transgenic mice carrying a single point mutation (CD45E613R), which constitutively activates CD45. By using intravital microscopy experiments, we demonstrated that different steps of the leukocyte recruitment cascade were affected in CD45E613R mutant mice. The rolling velocity of CD45E613R mutant neutrophils was decreased compared with wild-type neutrophils that subsequently resulted in an increased number of adherent cells. The analysis of β2 integrins LFA-1 and macrophage-1 Ag (Mac-1) showed that in CD45E613R mutant neutrophils LFA-1 adhesiveness was impaired, and avidity was enhanced, whereas Mac-1 adhesiveness was increased. Because of the increased Mac-1 adhesiveness, neutrophil crawling was impaired in CD45E613R mutant compared with wild-type neutrophils. In an Escherichia coli lung infection model, CD45E613R mice displayed a decreased neutrophil recruitment into the alveolar compartment, which resulted in an increased number of CFUs in the lung. Our data demonstrate that the CD45E613R mutation modulates integrin activation and leukocyte recruitment during inflammation.
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Affiliation(s)
- Giulia Germena
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital of Münster, 48149 Münster, Germany; andMax-Planck Institute for Molecular Biomedicine, 48149 Münster, Germany
| | - Stephanie Volmering
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital of Münster, 48149 Münster, Germany; andMax-Planck Institute for Molecular Biomedicine, 48149 Münster, Germany
| | - Charlotte Sohlbach
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital of Münster, 48149 Münster, Germany; andMax-Planck Institute for Molecular Biomedicine, 48149 Münster, Germany
| | - Alexander Zarbock
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital of Münster, 48149 Münster, Germany; andMax-Planck Institute for Molecular Biomedicine, 48149 Münster, Germany
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The cytokine midkine supports neutrophil trafficking during acute inflammation by promoting adhesion via β2 integrins (CD11/CD18). Blood 2014; 123:1887-96. [PMID: 24458438 DOI: 10.1182/blood-2013-06-510875] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Emerging evidence suggests a role of the cytokine midkine (MK) in inflammation. In this study, its functional relevance for recruitment of polymorphonuclear neutrophils (PMNs) during acute inflammation was investigated. Intravital microscopy and histologic analysis of tumor necrosis factor-α-stimulated cremaster muscle venules revealed severely compromised leukocyte adhesion and extravasation in MK(-/-) mice compared with MK(+/+) animals. Systemic administration of recombinant MK completely rescued the adhesion defect in MK(-/-) mice. In a hind limb ischemia model, leukocyte accumulation in MK(-/-) mice was significantly diminished compared with MK(+/+) animals. However, MK did not lead to an inflammatory activation of PMNs or endothelial cells suggesting that it does not serve as classical proinflammatory cytokine. Unexpectedly, immobilized MK mediated PMN adhesion under static and flow conditions, whereas PMN-derived MK was dispensable for the induction of adhesion. Furthermore, adhesion strengthening remained unaffected by MK. Flow cytometry revealed that immobilized, but not soluble MK, significantly promoted the high affinity conformation of β2 integrins of PMNs. Blocking studies of low-density lipoprotein receptor-related protein 1 (LRP1) suggested that LRP1 may act as a receptor for MK on PMNs. Thus, MK seems to support PMN adhesion by promoting the high affinity conformation of β2 integrins, thereby facilitating PMN trafficking during acute inflammation.
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Gimme a brake: HPK1 regulates LFA-1 and neutrophil traction. Blood 2013; 121:4017-8. [PMID: 23682030 DOI: 10.1182/blood-2013-03-489856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In this issue of Blood, Jakob et al report that hematopoietic progenitor kinase 1 (HPK1) participates during signaling of neutrophil recruitment by acting as a regulator of the adhesiveness of the b2-integrin lymphocyte function-associated antigen 1 (LFA-1) during acute inflammation.
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