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Kasper R, Rodriguez-Alfonso A, Ständker L, Wiese S, Schneider EM. Major endothelial damage markers identified from hemadsorption filters derived from treated patients with septic shock - endoplasmic reticulum stress and bikunin may play a role. Front Immunol 2024; 15:1359097. [PMID: 38698864 PMCID: PMC11063272 DOI: 10.3389/fimmu.2024.1359097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 04/08/2024] [Indexed: 05/05/2024] Open
Abstract
Introduction In septic patients the damage of the endothelial barrier is decisive leading to circulatory septic shock with disseminated vascular coagulation, edema and multiorgan failure. Hemadsorption therapy leads to rapid resolution of clinical symptoms. We propose that the isolation of proteins adsorbed to hemadsorption devices contributes to the identification of mediators responsible for endothelial barrier dysfunction. Material and methods Plasma materials enriched to hemadsorption filters (CytoSorb®) after therapy of patients in septic shock were fractionated and functionally characterized for their effect on cell integrity, viability, proliferation and ROS formation by human endothelial cells. Fractions were further studied for their contents of oxidized nucleic acids as well as peptides and proteins by mass spectrometry. Results Individual fractions exhibited a strong effect on endothelial cell viability, the endothelial layer morphology, and ROS formation. Fractions with high amounts of DNA and oxidized DNA correlated with ROS formation in the target endothelium. In addition, defined proteins such as defensins (HNP-1), SAA1, CXCL7, and the peptide bikunin were linked to the strongest additive effects in endothelial damage. Conclusion Our results indicate that hemadsorption is efficient to transiently remove strong endothelial damage mediators from the blood of patients with septic shock, which explains a rapid clinical improvement of inflammation and endothelial function. The current work indicates that a combination of stressors leads to the most detrimental effects. Oxidized ssDNA, likely derived from mitochondria, SAA1, the chemokine CXCL7 and the human neutrophil peptide alpha-defensin 1 (HNP-1) were unique for their significant negative effect on endothelial cell viability. However, the strongest damage effect occurred, when, bikunin - cleaved off from alpha-1-microglobulin was present in high relative amounts (>65%) of protein contents in the most active fraction. Thus, a relevant combination of stressors appears to be removed by hemadsorption therapy which results in fulminant and rapid, though only transient, clinical restitution.
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Affiliation(s)
- Robin Kasper
- Clinic of Anesthesiology and Intensive Care Medicine, University Hospital Ulm, Ulm, Germany
| | - Armando Rodriguez-Alfonso
- Core Facility Functional Peptidomics, Ulm University Medical Center, Ulm, Germany
- Core Unit Mass Spectrometry and Proteomics (CUMP), Ulm University, Ulm, Germany
| | - Ludger Ständker
- Core Facility Functional Peptidomics, Ulm University Medical Center, Ulm, Germany
| | - Sebastian Wiese
- Core Unit Mass Spectrometry and Proteomics (CUMP), Ulm University, Ulm, Germany
| | - E. Marion Schneider
- Clinic of Anesthesiology and Intensive Care Medicine, University Hospital Ulm, Ulm, Germany
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Struck EC, Belova T, Hsieh PH, Odeberg JO, Kuijjer ML, Dusart PJ, Butler LM. Global Transcriptome Analysis Reveals Distinct Phases of the Endothelial Response to TNF. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:117-129. [PMID: 38019121 PMCID: PMC10733583 DOI: 10.4049/jimmunol.2300419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 10/19/2023] [Indexed: 11/30/2023]
Abstract
The vascular endothelium acts as a dynamic interface between blood and tissue. TNF-α, a major regulator of inflammation, induces endothelial cell (EC) transcriptional changes, the overall response dynamics of which have not been fully elucidated. In the present study, we conducted an extended time-course analysis of the human EC response to TNF, from 30 min to 72 h. We identified regulated genes and used weighted gene network correlation analysis to decipher coexpression profiles, uncovering two distinct temporal phases: an acute response (between 1 and 4 h) and a later phase (between 12 and 24 h). Sex-based subset analysis revealed that the response was comparable between female and male cells. Several previously uncharacterized genes were strongly regulated during the acute phase, whereas the majority in the later phase were IFN-stimulated genes. A lack of IFN transcription indicated that this IFN-stimulated gene expression was independent of de novo IFN production. We also observed two groups of genes whose transcription was inhibited by TNF: those that resolved toward baseline levels and those that did not. Our study provides insights into the global dynamics of the EC transcriptional response to TNF, highlighting distinct gene expression patterns during the acute and later phases. Data for all coding and noncoding genes is provided on the Web site (http://www.endothelial-response.org/). These findings may be useful in understanding the role of ECs in inflammation and in developing TNF signaling-targeted therapies.
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Affiliation(s)
- Eike C. Struck
- Department of Clinical Medicine, The Arctic University of Norway, Tromsø, Norway
| | - Tatiana Belova
- Centre for Molecular Medicine Norway, Nordic EMBL Partnership, University of Oslo, Oslo, Norway
| | - Ping-Han Hsieh
- Centre for Molecular Medicine Norway, Nordic EMBL Partnership, University of Oslo, Oslo, Norway
| | - Jacob O. Odeberg
- Department of Clinical Medicine, The Arctic University of Norway, Tromsø, Norway
- Science for Life Laboratory, Department of Protein Science, Royal Institute of Technology, Stockholm, Sweden
- The University Hospital of North Norway, Tromsø, Norway
- Coagulation Unit, Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
| | - Marieke L. Kuijjer
- Centre for Molecular Medicine Norway, Nordic EMBL Partnership, University of Oslo, Oslo, Norway
- Department of Pathology, Leiden University Medical Center, Leiden, the Netherlands
- Leiden Center for Computational Oncology, Leiden University Medical Center, Leiden, the Netherlands
| | - Philip J. Dusart
- Science for Life Laboratory, Department of Protein Science, Royal Institute of Technology, Stockholm, Sweden
- Clinical Chemistry and Blood Coagulation Research, Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - Lynn M. Butler
- Department of Clinical Medicine, The Arctic University of Norway, Tromsø, Norway
- Science for Life Laboratory, Department of Protein Science, Royal Institute of Technology, Stockholm, Sweden
- Clinical Chemistry and Blood Coagulation Research, Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
- Clinical Chemistry, Karolinska University Laboratory, Karolinska University Hospital, Stockholm, Sweden
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Halici Z, Bulut V, Cadirci E, Yayla M. Investigation of the effects of urotensin II receptors in LPS-induced inflammatory response in HUVEC cell line through calcineurin/NFATc/IL-2 pathway. Adv Med Sci 2023; 68:433-440. [PMID: 37913738 DOI: 10.1016/j.advms.2023.10.008] [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: 01/13/2023] [Revised: 07/03/2023] [Accepted: 10/20/2023] [Indexed: 11/03/2023]
Abstract
PURPOSE The effect of urotensin II (U-II), a powerful endogenous vasoconstrictor substance, on the immune system and its mediators is very important. It was herein aimed to demonstrate the possible relationship between the calcineurin/nuclear factor of activated T-cells cytoplasmic 1/interleukin-2 (CaN/NFATc/IL-2) pathway and urotensin receptors (UTRs) in inflammatory response due to lipopolysaccharide (LPS). METHODS An LPS-induced inflammation model was used on the human umbilical vein endothelial cells (HUVEC) cell line and drugs were applied accordingly, forming the following groups: Control Group, LPS Group, Agonist Group (10-8 M U-II), Antagonist Group (10-6 M palosuran), Tacrolimus (TAC) Group (10 ng/mL FK-506), Agonist + TAC Group, and Antagonist + TAC Group. Gene expression analyses were performed using real-time polymerase chain reaction (RT-PCR). RESULTS In the analysis of the cell viability at 48 and 72 h, there was a decrease in the Agonist Group, while in the Agonist + TAC Group, the cell viability increased. In the Antagonist Group, cell viability was maintained when compared to the LPS Group, while in the TAC Group, this effect was reduced. The mRNA expression levels of UTR, CaN, NFATc, IL-2 receptor (IL-2R), IL-6 and nuclear factor kappa B (NF-κB) were higher in the LPS Group than in the Control Group, and even the UTR, CaN, NFATc, IL-2R were higher with agonist administration. This effect of the agonist was shown to be completely mitigated in the presence of the CaN inhibitor. CONCLUSION U-II and its receptors can perform key functions regarding the endothelial cell damage via the CaN/NFATc/IL-2 pathway.
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Affiliation(s)
- Zekai Halici
- Department of Pharmacology, Ataturk University, Erzurum, Turkey; Clinical Research, Development and Design Application and Research Center, Ataturk University, Erzurum, Turkey.
| | - Vedat Bulut
- Department of Immunology, Gazi University, Ankara, Turkey
| | - Elif Cadirci
- Department of Pharmacology, Ataturk University, Erzurum, Turkey; Clinical Research, Development and Design Application and Research Center, Ataturk University, Erzurum, Turkey
| | - Muhammed Yayla
- Department of Pharmacology, Kafkas University, Kars, Turkey
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Single-cell RNA sequencing depicts the local cell landscape in thyroid-associated ophthalmopathy. Cell Rep Med 2022; 3:100699. [PMID: 35896115 PMCID: PMC9418739 DOI: 10.1016/j.xcrm.2022.100699] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 02/18/2022] [Accepted: 07/08/2022] [Indexed: 12/03/2022]
Abstract
There is a specific reactivity and characteristic remodeling of the periocular tissue in thyroid-associated ophthalmopathy (TAO). However, local cell changes responsible for these pathological processes have not been sufficiently identified. Here, single-cell RNA sequencing is performed to characterize the transcriptional changes of cellular components in the orbital connective tissue in individuals with TAO. Our study shows that lipofibroblasts with RASD1 expression are highly involved in inflammation and adipogenesis during TAO. ACKR1+ endothelial cells and adipose tissue macrophages may engage in TAO pathogenesis. We find CD8+CD57+ cytotoxic T lymphocytes with the terminal differentiation phenotype to be another source of interferon-γ, a molecule actively engaging in TAO pathogenesis. Cell-cell communication analysis reveals increased activity of CXCL8/ACKR1 and TNFSF4/TNFRSF4 interactions in TAO. This study provides a comprehensive local cell landscape of TAO and may be valuable for future therapy investigation. A local transcriptional landscape of orbital connective tissue in TAO is developed RASD1-expressing lipofibroblasts are highly involved in adipogenesis and inflammation ACKR1+ endothelial cells contribute to inflammatory cell infiltration in TAO Adipose tissue macrophages engage in lipid metabolism and inflammatory response in TAO
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Lourenço WDJ, Reis RF, Ruiz-Baier R, Rocha BM, dos Santos RW, Lobosco M. A Poroelastic Approach for Modelling Myocardial Oedema in Acute Myocarditis. Front Physiol 2022; 13:888515. [PMID: 35860652 PMCID: PMC9289286 DOI: 10.3389/fphys.2022.888515] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/27/2022] [Indexed: 12/28/2022] Open
Abstract
Myocarditis is a general set of mechanisms that manifest themselves into the inflammation of the heart muscle. In 2017, more than 3 million people were affected by this disease worldwide, causing about 47,000 deaths. Many aspects of the origin of this disease are well known, but several important questions regarding the disease remain open. One of them is why some patients develop a significantly localised inflammation while others develop a much more diffuse inflammation, reaching across large portions of the heart. Furthermore, the specific role of the pathogenic agent that causes inflammation as well as the interaction with the immune system in the progression of the disease are still under discussion. Providing answers to these crucial questions can have an important impact on patient treatment. In this scenario, computational methods can aid specialists to understand better the relationships between pathogens and the immune system and elucidate why some patients develop diffuse myocarditis. This paper alters a recently developed model to study the myocardial oedema formation in acute infectious myocarditis. The model describes the finite deformation regime using partial differential equations to represent tissue displacement, fluid pressure, fluid phase, and the concentrations of pathogens and leukocytes. A sensitivity analysis was performed to understand better the influence of the most relevant model parameters on the disease dynamics. The results showed that the poroelastic model could reproduce local and diffuse myocarditis dynamics in simplified and complex geometrical domains.
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Affiliation(s)
- Wesley de Jesus Lourenço
- Graduate Program on Computational Modelling, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Ruy Freitas Reis
- Department of Computer Science, Institute of Exact Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Ricardo Ruiz-Baier
- School of Mathematics and Victorian Heart Institute, Monash University, Melbourne, VIC, Australia
- Research Core on Natural and Exact Sciences, Universidad Adventista de Chile, Chillán, Chile
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Bernardo Martins Rocha
- Graduate Program on Computational Modelling, Federal University of Juiz de Fora, Juiz de Fora, Brazil
- Department of Computer Science, Institute of Exact Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Rodrigo Weber dos Santos
- Graduate Program on Computational Modelling, Federal University of Juiz de Fora, Juiz de Fora, Brazil
- Department of Computer Science, Institute of Exact Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Marcelo Lobosco
- Graduate Program on Computational Modelling, Federal University of Juiz de Fora, Juiz de Fora, Brazil
- Department of Computer Science, Institute of Exact Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
- *Correspondence: Marcelo Lobosco,
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Targeting vascular inflammation through emerging methods and drug carriers. Adv Drug Deliv Rev 2022; 184:114180. [PMID: 35271986 PMCID: PMC9035126 DOI: 10.1016/j.addr.2022.114180] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 02/18/2022] [Accepted: 03/04/2022] [Indexed: 12/16/2022]
Abstract
Acute inflammation is a common dangerous component of pathogenesis of many prevalent conditions with high morbidity and mortality including sepsis, thrombosis, acute respiratory distress syndrome (ARDS), COVID-19, myocardial and cerebral ischemia-reperfusion, infection, and trauma. Inflammatory changes of the vasculature and blood mediate the course and outcome of the pathology in the tissue site of insult, remote organs and systemically. Endothelial cells lining the luminal surface of the vasculature play the key regulatory functions in the body, distinct under normal vs. pathological conditions. In theory, pharmacological interventions in the endothelial cells might enable therapeutic correction of the overzealous damaging pro-inflammatory and pro-thrombotic changes in the vasculature. However, current agents and drug delivery systems (DDS) have inadequate pharmacokinetics and lack the spatiotemporal precision of vascular delivery in the context of acute inflammation. To attain this level of precision, many groups design DDS targeted to specific endothelial surface determinants. These DDS are able to provide specificity for desired tissues, organs, cells, and sub-cellular compartments needed for a particular intervention. We provide a brief overview of endothelial determinants, design of DDS targeted to these molecules, their performance in experimental models with focus on animal studies and appraisal of emerging new approaches. Particular attention is paid to challenges and perspectives of targeted therapeutics and nanomedicine for advanced management of acute inflammation.
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Mauersberger C, Hinterdobler J, Schunkert H, Kessler T, Sager HB. Where the Action Is-Leukocyte Recruitment in Atherosclerosis. Front Cardiovasc Med 2022; 8:813984. [PMID: 35087886 PMCID: PMC8787128 DOI: 10.3389/fcvm.2021.813984] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 12/15/2021] [Indexed: 12/12/2022] Open
Abstract
Atherosclerosis is the leading cause of death worldwide and leukocyte recruitment is a key element of this phenomenon, thus allowing immune cells to enter the arterial wall. There, in concert with accumulating lipids, the invading leukocytes trigger a plethora of inflammatory responses which promote the influx of additional leukocytes and lead to the continued growth of atherosclerotic plaques. The recruitment process follows a precise scheme of tethering, rolling, firm arrest, crawling and transmigration and involves multiple cellular and subcellular players. This review aims to provide a comprehensive up-to-date insight into the process of leukocyte recruitment relevant to atherosclerosis, each from the perspective of endothelial cells, monocytes and macrophages, neutrophils, T lymphocytes and platelets. In addition, therapeutic options targeting leukocyte recruitment into atherosclerotic lesions-or potentially arising from the growing body of insights into its precise mechanisms-are highlighted.
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Affiliation(s)
- Carina Mauersberger
- Department of Cardiology, German Heart Center Munich, Technical University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Julia Hinterdobler
- Department of Cardiology, German Heart Center Munich, Technical University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Heribert Schunkert
- Department of Cardiology, German Heart Center Munich, Technical University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Thorsten Kessler
- Department of Cardiology, German Heart Center Munich, Technical University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Hendrik B. Sager
- Department of Cardiology, German Heart Center Munich, Technical University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
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Kozlovski S, Regev O, Sapoznikov A, Kizner M, Achdout H, Petrovich-Kopitman E, Elkahal J, Addadi Y, Silva Castanheira FVE, Feigelson SW, Kubes P, Erez N, Garbi N, Alon R. ICAMs are dispensable for influenza clearance and anti-viral humoral and cellular immunity. Front Immunol 2022; 13:1041552. [PMID: 36895258 PMCID: PMC9988921 DOI: 10.3389/fimmu.2022.1041552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 12/12/2022] [Indexed: 02/25/2023] Open
Abstract
αLβ2 (LFA-1) mediated interactions with ICAM-1 and ICAM-2 predominate leukocyte-vascular interactions, but their functions in extravascular cell-cell communications is still debated. The roles of these two ligands in leukocyte trafficking, lymphocyte differentiation, and immunity to influenza infections were dissected in the present study. Surprisingly, double ICAM-1 and ICAM-2 knock out mice (herein ICAM-1/2-/- mice) infected with a lab adapted H1N1 influenza A virus fully recovered from infection, elicited potent humoral immunity, and generated normal long lasting anti-viral CD8+ T cell memory. Furthermore, lung capillary ICAMs were dispensable for both NK and neutrophil entry to virus infected lungs. Mediastinal lymph nodes (MedLNs) of ICAM-1/2-/- mice poorly recruited naïve T cells and B lymphocytes but elicited normal humoral immunity critical for viral clearance and effective CD8+ differentiation into IFN-γ producing T cells. Furthermore, whereas reduced numbers of virus specific effector CD8+ T cells accumulated inside infected ICAM-1/2-/- lungs, normal virus-specific TRM CD8+ cells were generated inside these lungs and fully protected ICAM-1/2-/- mice from secondary heterosubtypic infections. B lymphocyte entry to the MedLNs and differentiation into extrafollicular plasmablasts, producing high affinity anti-influenza IgG2a antibodies, were also ICAM-1 and ICAM-2 independent. A potent antiviral humoral response was associated with accumulation of hyper-stimulated cDC2s in ICAM null MedLNs and higher numbers of virus-specific T follicular helper (Tfh) cells generated following lung infection. Mice selectively depleted of cDC ICAM-1 expression supported, however, normal CTL and Tfh differentiation following influenza infection, ruling out essential co-stimulatory functions of DC ICAM-1 in CD8+ and CD4+ T cell differentiation. Collectively our findings suggest that lung ICAMs are dispensable for innate leukocyte trafficking to influenza infected lungs, for the generation of peri-epithelial TRM CD8+ cells, and long term anti-viral cellular immunity. In lung draining LNs, although ICAMs promote lymphocyte homing, these key integrin ligands are not required for influenza-specific humoral immunity or generation of IFN-γ effector CD8+ T cells. In conclusion, our findings suggest unexpected compensatory mechanisms that orchestrate protective anti-influenza immunity in the absence of vascular and extravascular ICAMs.
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Affiliation(s)
- Stav Kozlovski
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Ofer Regev
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Anita Sapoznikov
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Marina Kizner
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Hagit Achdout
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona, Israel
| | | | - Jacob Elkahal
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Yoseph Addadi
- Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | | | - Sara W Feigelson
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Paul Kubes
- Department of Pharmacology and Physiology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Noam Erez
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Natalio Garbi
- Department of Cellular Immunology, Institute of Experimental Immunology Medical Faculty, University of Bonn, Bonn, Germany
| | - Ronen Alon
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
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Hennigs JK, Matuszcak C, Trepel M, Körbelin J. Vascular Endothelial Cells: Heterogeneity and Targeting Approaches. Cells 2021; 10:2712. [PMID: 34685692 PMCID: PMC8534745 DOI: 10.3390/cells10102712] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/01/2021] [Accepted: 10/05/2021] [Indexed: 01/18/2023] Open
Abstract
Forming the inner layer of the vascular system, endothelial cells (ECs) facilitate a multitude of crucial physiological processes throughout the body. Vascular ECs enable the vessel wall passage of nutrients and diffusion of oxygen from the blood into adjacent cellular structures. ECs regulate vascular tone and blood coagulation as well as adhesion and transmigration of circulating cells. The multitude of EC functions is reflected by tremendous cellular diversity. Vascular ECs can form extremely tight barriers, thereby restricting the passage of xenobiotics or immune cell invasion, whereas, in other organ systems, the endothelial layer is fenestrated (e.g., glomeruli in the kidney), or discontinuous (e.g., liver sinusoids) and less dense to allow for rapid molecular exchange. ECs not only differ between organs or vascular systems, they also change along the vascular tree and specialized subpopulations of ECs can be found within the capillaries of a single organ. Molecular tools that enable selective vascular targeting are helpful to experimentally dissect the role of distinct EC populations, to improve molecular imaging and pave the way for novel treatment options for vascular diseases. This review provides an overview of endothelial diversity and highlights the most successful methods for selective targeting of distinct EC subpopulations.
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Affiliation(s)
- Jan K. Hennigs
- ENDomics Lab, Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany;
| | - Christiane Matuszcak
- ENDomics Lab, Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany;
| | - Martin Trepel
- Department of Hematology and Medical Oncology, University Medical Center Augsburg, 86156 Augsburg, Germany;
| | - Jakob Körbelin
- ENDomics Lab, Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany;
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10
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Kose D, Un H, Ugan RA, Halici Z, Cadirci E, Tastan TB, Kahramanlar A. Aprepitant: an antiemetic drug, contributes to the prevention of acute lung injury with its anti-inflammatory and antioxidant properties. J Pharm Pharmacol 2021; 73:1302-1309. [PMID: 34160038 DOI: 10.1093/jpp/rgab088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/20/2021] [Indexed: 12/21/2022]
Abstract
OBJECTIVES We investigated, the effects of aprepitant (APRE) on the lung tissues of rats with an experimental polymicrobial sepsis model (CLP: cecal ligation and puncture) biochemically, molecularly and histopathologically. METHODS A total of 40 rats were divided into 5 groups with 8 animals in each group. Group 1 (SHAM), control group; Group 2 (CLP), cecal ligation and puncture; Group 3 (CLP + APRE10), rats were administered CLP + 10 mg/kg aprepitant; Group 4 (CLP + APRE20), rats were administered CLP + 20 mg/kg aprepitant; and Group 5 (CLP + APRE40), rats were administered CLP + 40 mg/kg aprepitant. A polymicrobial sepsis model was induced with CLP. After 16 h, lung tissues were taken for examination. Tumour necrosis factor α (TNF-α) and nuclear factor-kappa b (NFK-b) messenger ribonucleic acid (mRNA) expressions were analysed by real-time PCR (RT-PCR), biochemically antioxidant parameters such as superoxide dismutase (SOD) and glutathione (GSH) and oxidant parameters such as malondialdehyde (MDA) and lung damage histopathologically. KEY FINDINGS AND CONCLUSIONS The GSH level and SOD activity increased while the MDA level and the expressions of TNF-α and NFK-b were reduced in the groups treated with APRE, especially in the CLP + APRE40 group. The histopathology results supported the molecular and biochemical results.
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Affiliation(s)
- Duygu Kose
- Clinical Research, Development and Design Application, and Research Center, Ataturk University, Erzurum, Turkey
| | - Harun Un
- Faculty of Pharmacy, Department of Biochemistry, Agri İbrahim Çeçen University, Ağrı, Turkey
| | - Rustem Anil Ugan
- Faculty of Pharmacy, Department of Pharmacology, Atatürk University, Erzurum, Turkey
| | - Zekai Halici
- Clinical Research, Development and Design Application, and Research Center, Ataturk University, Erzurum, Turkey
| | - Elif Cadirci
- Faculty of Medicine, Department of Pharmacology, Atatürk University, Erzurum, Turkey
| | - Tugba Bal Tastan
- Faculty of Medicine, Department of Histology and Embryology Department, Binali Yıldırım University, Erzincan, Turkey
| | - Aysenur Kahramanlar
- Faculty of Pharmacy, Department of Biochemistry, Ataturk University, Erzurum, Turkey
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11
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Zou SS, Zou QC, Xiong WJ, Cui NY, Wang K, Liu HX, Lou WJ, Higazy D, Zhang YG, Cui M. Brain Microvascular Endothelial Cell-Derived HMGB1 Facilitates Monocyte Adhesion and Transmigration to Promote JEV Neuroinvasion. Front Cell Infect Microbiol 2021; 11:701820. [PMID: 34532298 PMCID: PMC8439198 DOI: 10.3389/fcimb.2021.701820] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 08/10/2021] [Indexed: 12/30/2022] Open
Abstract
Infection with Japanese encephalitis virus (JEV) induces high morbidity and mortality, including potentially permanent neurological sequelae. However, the mechanisms by which viruses cross the blood-brain barrier (BBB) and invade into the central nervous system (CNS) remain unclear. Here, we show that extracellular HMGB1 facilitates immune cell transmigration. Furthermore, the migration of immune cells into the CNS dramatically increases during JEV infection which may enhance viral clearance, but paradoxically expedite the onset of Japanese encephalitis (JE). In this study, brain microvascular endothelial cells (BMECs) were utilized for the detection of HMGB1 release, and leucocyte, adhesion, and the integrity of the BBB in vitro. Genetically modified JEV-expressing EGFP (EGFP-JEV) and the BBB model were established to trace JEV-infected immune cell transmigration, which mimics the process of viral neuroinfection. We find that JEV causes HMGB1 release from BMECs while increasing adhesion molecules. Recombinant HMGB1 enhances leukocyte-endothelium adhesion, facilitating JEV-infected monocyte transmigration across endothelia. Thus, JEV successfully utilizes infected monocytes to spread into the brain, expanding inside of the brain, and leading to the acceleration of JE onset, which was facilitated by HMGB1. HMGB1-promoted monocyte transmigration may represent the mechanism of JEV neuroinvasion, revealing potential therapeutic targets.
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Affiliation(s)
- Song-Song Zou
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Qing-Cui Zou
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Wen-Jing Xiong
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Ning-Yi Cui
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Ke Wang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Hao-Xuan Liu
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Wen-Juan Lou
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Doaa Higazy
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Ya-Ge Zhang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
| | - Min Cui
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, China
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12
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Desideri E, Ciccarone F, Ciriolo MR, Fratantonio D. Extracellular vesicles in endothelial cells: from mediators of cell-to-cell communication to cargo delivery tools. Free Radic Biol Med 2021; 172:508-520. [PMID: 34214634 DOI: 10.1016/j.freeradbiomed.2021.06.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/19/2021] [Accepted: 06/23/2021] [Indexed: 12/19/2022]
Abstract
Extracellular vesicles (EVs) are nanosized vesicles released from most cell types that play a key role in cell-to-cell communication by carrying DNA, non-coding RNAs, proteins and lipids out of cells. The composition of EVs depends on the cell or tissue of origin and changes according to their pathophysiological conditions, making EVs a potential circulating biomarker of disease. Additionally, the natural tropism of EVs for specific organs and cells has raised the interest in their use as delivery vehicles. In this review, we provide an overview of EV biogenesis, isolation and characterization. We also discuss EVs in the context of endothelial pathophysiology, summarizing the current knowledge about their role in cell communication in quiescent and activated endothelial cells. In the last part, we describe the potential use of EVs as delivery vehicles of bioactive compounds and the current strategies to load exogenous cargo and to functionalize EVs to drive them to a specific tissue.
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Affiliation(s)
- Enrico Desideri
- Department of Biology, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133, Rome
| | - Fabio Ciccarone
- IRCCS San Raffaele Pisana, Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Rome, Italy
| | - Maria Rosa Ciriolo
- Department of Biology, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133, Rome; IRCCS San Raffaele Pisana, Via della Pisana 235, 00163, Rome, Italy.
| | - Deborah Fratantonio
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari Aldo Moro, 70125 Bari, Italy.
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13
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Emerging Approaches to Understanding Microvascular Endothelial Heterogeneity: A Roadmap for Developing Anti-Inflammatory Therapeutics. Int J Mol Sci 2021; 22:ijms22157770. [PMID: 34360536 PMCID: PMC8346165 DOI: 10.3390/ijms22157770] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 12/14/2022] Open
Abstract
The endothelium is the inner layer of all blood vessels and it regulates hemostasis. It also plays an active role in the regulation of the systemic inflammatory response. Systemic inflammatory disease often results in alterations in vascular endothelium barrier function, increased permeability, excessive leukocyte trafficking, and reactive oxygen species production, leading to organ damage. Therapeutics targeting endothelium inflammation are urgently needed, but strong concerns regarding the level of phenotypic heterogeneity of microvascular endothelial cells between different organs and species have been expressed. Microvascular endothelial cell heterogeneity in different organs and organ-specific variations in endothelial cell structure and function are regulated by intrinsic signals that are differentially expressed across organs and species; a result of this is that neutrophil recruitment to discrete organs may be regulated differently. In this review, we will discuss the morphological and functional variations in differently originated microvascular endothelia and discuss how these variances affect systemic function in response to inflammation. We will review emerging in vivo and in vitro models and techniques, including microphysiological devices, proteomics, and RNA sequencing used to study the cellular and molecular heterogeneity of endothelia from different organs. A better understanding of microvascular endothelial cell heterogeneity will provide a roadmap for developing novel therapeutics to target the endothelium.
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14
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Pathophysiological Association of Endothelial Dysfunction with Fatal Outcome in COVID-19. Int J Mol Sci 2021; 22:ijms22105131. [PMID: 34066226 PMCID: PMC8150852 DOI: 10.3390/ijms22105131] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/27/2021] [Accepted: 05/10/2021] [Indexed: 12/17/2022] Open
Abstract
The outbreak of coronavirus disease 2019 (COVID-19) caused by the betacoronavirus SARS-CoV-2 is now a worldwide challenge for healthcare systems. Although the leading cause of mortality in patients with COVID-19 is hypoxic respiratory failure due to viral pneumonia and acute respiratory distress syndrome, accumulating evidence has shown that the risk of thromboembolism is substantially high in patients with severe COVID-19 and that a thromboembolic event is another major complication contributing to the high morbidity and mortality in patients with COVID-19. Endothelial dysfunction is emerging as one of the main contributors to the pathogenesis of thromboembolic events in COVID-19. Endothelial dysfunction is usually referred to as reduced nitric oxide bioavailability. However, failures of the endothelium to control coagulation, inflammation, or permeability are also instances of endothelial dysfunction. Recent studies have indicated the possibility that SARS-CoV-2 can directly infect endothelial cells via the angiotensin-converting enzyme 2 pathway and that endothelial dysfunction caused by direct virus infection of endothelial cells may contribute to thrombotic complications and severe disease outcomes in patients with COVID-19. In this review, we summarize the current understanding of relationships between SARS-CoV-2 infection, endothelial dysfunction, and pulmonary and extrapulmonary complications in patients with COVID-19.
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15
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Bayraktutan Z, Dincer B, Keskin H, Kose D, Bilen A, Toktay E, Sirin B, Halici Z. Roflumilast as a Potential Therapeutic Agent for Cecal Ligation and Puncture-Induced Septic Lung Injury. J INVEST SURG 2021; 35:605-613. [PMID: 33843406 DOI: 10.1080/08941939.2021.1908462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE/AIMS This study focused on delineating the possible effects of roflumilast (ROF), a selective phosphodiesterase 4 (PDE4) inhibitor, in rats with cecal ligation and puncture (CLP)-induced polymicrobial sepsis, and investigated whether ROF can act as a protective agent in sepsis-induced lung damage. MATERIAL AND METHODS Four experimental groups were organized, each comprising eight rats: Control, Sepsis, Sepsis + ROF 0.5 mgkg-1, and Sepsis + ROF 1 mgkg-1 groups. A polymicrobial sepsis model was induced in the rats by cecal ligation and puncture under anesthesia. Twelve hours after sepsis induction, the lungs were obtained for biochemical, molecular, and histopathological analyses. RESULTS In the sepsis group's lungs, the TNF-α, IL-1β, and IL-6 mRNA expression levels peaked in the sepsis group's lung tissues, and ROF significantly decreased these levels compared with the sepsis group dose-dependently. ROF also significantly decreased MDA levels in septic lungs and increased antioxidant parameters (SOD and GSH) compared with the sepsis group. Histopathological analysis results supported biochemical and molecular results. CONCLUSIONS ROF, a PDE4 inhibitor, suppressed the expression levels of pro-inflammatory cytokines, alleviated lung damage (probably by blocking neutrophil infiltration), and increased the capacity of the antioxidant system.
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Affiliation(s)
| | - Busra Dincer
- Department of Pharmacology, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - Halil Keskin
- Department of Child Health and Diseases, Ataturk University, Erzurum, Turkey
| | - Duygu Kose
- Department of Pharmacology, Ataturk University, Erzurum, Turkey
| | - Arzu Bilen
- Department of Internal Medicine, Ataturk University, Erzurum, Turkey
| | - Erdem Toktay
- Department of Histology and Embryology, Kafkas University, Kars, Turkey
| | - Busra Sirin
- Clinical Research, Development and Design Application and Research Center, Ataturk University, Erzurum, Turkey
| | - Zekai Halici
- Department of Pharmacology, Ataturk University, Erzurum, Turkey.,Department of Internal Medicine, Ataturk University, Erzurum, Turkey.,Department of Histology and Embryology, Kafkas University, Kars, Turkey.,Clinical Research, Development and Design Application and Research Center, Ataturk University, Erzurum, Turkey
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16
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Bedenbender K, Schmeck BT. Endothelial Ribonuclease 1 in Cardiovascular and Systemic Inflammation. Front Cell Dev Biol 2020; 8:576491. [PMID: 33015070 PMCID: PMC7500176 DOI: 10.3389/fcell.2020.576491] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/14/2020] [Indexed: 12/12/2022] Open
Abstract
The vascular endothelial cell layer forms the inner lining of all blood vessels to maintain proper functioning of the vascular system. However, dysfunction of the endothelium depicts a major issue in context of vascular pathologies, such as atherosclerosis or thrombosis that cause several million deaths per year worldwide. In recent years, the endothelial extracellular endonuclease Ribonuclease 1 (RNase1) was described as a key player in regulation of vascular homeostasis by protecting endothelial cells from detrimental effects of the damage-associated molecular pattern extracellular RNA upon acute inflammation. Despite this protective function, massive dysregulation of RNase1 was observed during prolonged endothelial cell inflammation resulting in progression of several vascular diseases. For the first time, this review article outlines the current knowledge on endothelial RNase1 and its role in function and dysfunction of the endothelium, thereby focusing on the intensive research from recent years: Uncovering the underlying mechanisms of RNase1 function and regulation in response to acute as well as long-term inflammation, the role of RNase1 in context of vascular, inflammatory and infectious diseases and the potential to develop novel therapeutic options to treat these pathologies against the background of RNase1 function in endothelial cells.
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Affiliation(s)
- Katrin Bedenbender
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Marburg, Germany
| | - Bernd T. Schmeck
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Marburg, Germany
- Department of Pulmonary and Critical Care Medicine, Department of Medicine, University Medical Center Giessen and Marburg, Philipps-University Marburg, Marburg, Germany
- Member of the German Center for Lung Research, Member of the German Center for Infectious Disease Research, Marburg, Germany
- Center for Synthetic Microbiology, Philipps-University Marburg, Marburg, Germany
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17
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Rodríguez AM, Trotta A, Melnyczajko AP, Miraglia MC, Kim KS, Delpino MV, Barrionuevo P, Giambartolomei GH. Brucella abortus-Stimulated Platelets Activate Brain Microvascular Endothelial Cells Increasing Cell Transmigration through the Erk1/2 Pathway. Pathogens 2020; 9:pathogens9090708. [PMID: 32867217 PMCID: PMC7558107 DOI: 10.3390/pathogens9090708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/14/2020] [Accepted: 08/25/2020] [Indexed: 01/18/2023] Open
Abstract
Central nervous system invasion by bacteria of the genus Brucella results in an inflammatory disorder called neurobrucellosis. A common feature associated with this pathology is blood-brain barrier (BBB) activation. However, the underlying mechanisms involved with such BBB activation remain unknown. The aim of this work was to investigate the role of Brucella abortus-stimulated platelets on human brain microvascular endothelial cell (HBMEC) activation. Platelets enhanced HBMEC activation in response to B. abortus infection. Furthermore, supernatants from B. abortus-stimulated platelets also activated brain endothelial cells, inducing increased secretion of IL-6, IL-8, CCL-2 as well as ICAM-1 and CD40 upregulation on HBMEC compared with supernatants from unstimulated platelets. Outer membrane protein 19, a B. abortus lipoprotein, recapitulated B. abortus-mediated activation of HBMECs by platelets. In addition, supernatants from B. abortus-activated platelets promoted transendothelial migration of neutrophils and monocytes. Finally, using a pharmacological inhibitor, we demonstrated that the Erk1/2 pathway is involved in the endothelial activation induced by B. abortus-stimulated platelets and also in transendothelial migration of neutrophils. These results describe a mechanism whereby B. abortus-stimulated platelets induce endothelial cell activation, promoting neutrophils and monocytes to traverse the BBB probably contributing to the inflammatory pathology of neurobrucellosis.
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Affiliation(s)
- Ana María Rodríguez
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires C1120AAD, Argentina; (A.M.R.); (A.P.M.); (M.C.M.); (M.V.D.)
| | - Aldana Trotta
- Instituto de Medicina Experimental (IMEX) (CONICET-Academia Nacional de Medicina), Buenos Aires C1425ASU, Argentina; (A.T.); (P.B.)
| | - Agustina P. Melnyczajko
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires C1120AAD, Argentina; (A.M.R.); (A.P.M.); (M.C.M.); (M.V.D.)
| | - M. Cruz Miraglia
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires C1120AAD, Argentina; (A.M.R.); (A.P.M.); (M.C.M.); (M.V.D.)
| | - Kwang Sik Kim
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA;
| | - M. Victoria Delpino
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires C1120AAD, Argentina; (A.M.R.); (A.P.M.); (M.C.M.); (M.V.D.)
| | - Paula Barrionuevo
- Instituto de Medicina Experimental (IMEX) (CONICET-Academia Nacional de Medicina), Buenos Aires C1425ASU, Argentina; (A.T.); (P.B.)
| | - Guillermo Hernán Giambartolomei
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires C1120AAD, Argentina; (A.M.R.); (A.P.M.); (M.C.M.); (M.V.D.)
- Correspondence:
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18
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Soroush F, Tang Y, Mustafa O, Sun S, Yang Q, Kilpatrick LE, Kiani MF. Neutrophil-endothelial interactions of murine cells is not a good predictor of their interactions in human cells. FASEB J 2019; 34:2691-2702. [PMID: 31908006 DOI: 10.1096/fj.201900048r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 11/14/2019] [Accepted: 12/06/2019] [Indexed: 12/20/2022]
Abstract
All drugs recently developed in rodent models to treat inflammatory disease have failed in clinical trials. We therefore used our novel biomimetic microfluidic assay (bMFA) to determine whether the response of murine cells to inflammatory activation or anti-inflammatory treatment is predictive of the response in human cells. Under physiologically relevant flow conditions, permeability and transendothelial electrical resistance (TEER) of human or mouse lung microvascular endothelial cells (HLMVEC or MLMVEC), and neutrophil-endothelial cell interaction was measured. The differential impact of a protein kinase C-delta TAT peptide inhibitor (PKCδ-i) was also quantified. Permeability of HLMVEC and MLMVEC was similar under control conditions but tumor necrosis factor α (TNF-α) and PKCδ-i had a significantly higher impact on permeability of HLMVEC. TEER across HLMVEC was significantly higher than MLMVEC, but PKCδ-i returned TEER to background levels only in human cells. The kinetics of N-formylmethionyl-leucyl-phenylalanine (fMLP)-mediated neutrophil migration was significantly different between the two species and PKCδ-i was significantly more effective in attenuating human neutrophil migration. However, human and mouse neutrophil adhesion patterns to microvascular endothelium were not significantly different. Surprisingly, while intercellular adhesion molecule 1 (ICAM-1) was significantly upregulated on activated HLMVEC, it was not significantly upregulated on activated MLMVEC. Responses to activation and anti-inflammatory treatment in mice may not always be predictive of their response in humans.
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Affiliation(s)
- Fariborz Soroush
- Department of Mechanical Engineering, College of Engineering, Temple University, Philadelphia, PA, USA
| | - Yuan Tang
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH, USA
| | - Omar Mustafa
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, PA, USA
| | - Shuang Sun
- Center for Inflammation, Clinical and Translational Lung Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
| | - Qingliang Yang
- Department of Mechanical Engineering, College of Engineering, Temple University, Philadelphia, PA, USA
| | - Laurie E Kilpatrick
- Center for Inflammation, Clinical and Translational Lung Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
| | - Mohammad F Kiani
- Department of Mechanical Engineering, College of Engineering, Temple University, Philadelphia, PA, USA.,Department of Radiation Oncology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
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19
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Sun X, Nkennor B, Mastikhina O, Soon K, Nunes SS. Endothelium-mediated contributions to fibrosis. Semin Cell Dev Biol 2019; 101:78-86. [PMID: 31791693 DOI: 10.1016/j.semcdb.2019.10.015] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/25/2019] [Accepted: 10/30/2019] [Indexed: 02/07/2023]
Abstract
Fibrosis, characterized by abnormal and excessive deposition of extracellular matrix, results in compromised tissue and organ structure. This can lead to reduced organ function and eventual failure. Although activated fibroblasts, called myofibroblasts, are considered the central players in fibrosis, the contribution of endothelial cells to the inception and progression of fibrosis has become increasingly recognized. Endothelial cells can contribute to fibrosis by acting as a source of myofibroblasts via endothelial-mesenchymal transition (EndoMT), or by becoming senescent, by secretion of profibrotic mediators and pro-inflammatory cytokines, chemokines and exosomes, promoting the recruitment of immune cells, and by participating in vascular rarefaction and decreased angiogenesis. In this review, we provide an overview of the different aspects of fibrosis in which endothelial cells have been implicated.
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Affiliation(s)
- Xuetao Sun
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada
| | - Blessing Nkennor
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada; Department of Biological Sciences, University of Toronto Scarborough, Canada
| | - Olya Mastikhina
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada
| | - Kayla Soon
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada
| | - Sara S Nunes
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada; Heart & Stroke/Richard Lewar Centre of Excellence, University of Toronto, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Canada.
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20
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Abstract
Knowledge of how the joint functions as an integrated unit in health and disease requires an understanding of the stromal cells populating the joint mesenchyme, including fibroblasts, tissue-resident macrophages and endothelial cells. Knowledge of the physiological and pathological mechanisms that involve joint mesenchymal stromal cells has begun to cast new light on why joint inflammation persists. The shared embryological origins of fibroblasts and endothelial cells might shape the behaviour of these cell types in diseased adult tissues. Cells of mesenchymal origin sustain inflammation in the synovial membrane and tendons by various mechanisms, and the important contribution of newly discovered fibroblast subtypes and their associated crosstalk with endothelial cells, tissue-resident macrophages and leukocytes is beginning to emerge. Knowledge of these mechanisms should help to shape the future therapeutic landscape and emphasizes the requirement for new strategies to address the pathogenic stroma and associated crosstalk between leukocytes and cells of mesenchymal origin.
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21
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Kerrigan SW, Devine T, Fitzpatrick G, Thachil J, Cox D. Early Host Interactions That Drive the Dysregulated Response in Sepsis. Front Immunol 2019; 10:1748. [PMID: 31447831 PMCID: PMC6691039 DOI: 10.3389/fimmu.2019.01748] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/10/2019] [Indexed: 01/18/2023] Open
Abstract
Sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection. While many individual cells and systems in the body are involved in driving the excessive and sometimes sustained host response, pathogen engagement with endothelial cells and platelets early in sepsis progression, are believed to be key. Significant progress has been made in establishing key molecular interactions between platelets and pathogens and endothelial cells and pathogens. This review will explore the growing number of compensatory connections between bacteria and viruses with platelets and endothelial cells and how a better understanding of these interactions are informing the field of potential novel ways to treat the dysregulated host response during sepsis.
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Affiliation(s)
- Steven W Kerrigan
- Cardiovascular Infection Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland.,School of Pharmacy, Royal College of Surgeons in Ireland, Dublin, Ireland.,Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland.,Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Tatyana Devine
- Cardiovascular Infection Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland.,Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland.,Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Glenn Fitzpatrick
- Cardiovascular Infection Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland.,School of Pharmacy, Royal College of Surgeons in Ireland, Dublin, Ireland.,Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Jecko Thachil
- Department of Haematology, Central Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
| | - Dermot Cox
- Cardiovascular Infection Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland.,Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland.,Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland
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22
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The Role of Tyrosine Phosphorylation of Protein Kinase C Delta in Infection and Inflammation. Int J Mol Sci 2019; 20:ijms20061498. [PMID: 30917487 PMCID: PMC6471617 DOI: 10.3390/ijms20061498] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 03/15/2019] [Accepted: 03/22/2019] [Indexed: 12/30/2022] Open
Abstract
Protein Kinase C (PKC) is a family composed of phospholipid-dependent serine/threonine kinases that are master regulators of inflammatory signaling. The activity of different PKCs is context-sensitive and these kinases can be positive or negative regulators of signaling pathways. The delta isoform (PKCδ) is a critical regulator of the inflammatory response in cancer, diabetes, ischemic heart disease, and neurodegenerative diseases. Recent studies implicate PKCδ as an important regulator of the inflammatory response in sepsis. PKCδ, unlike other members of the PKC family, is unique in its regulation by tyrosine phosphorylation, activation mechanisms, and multiple subcellular targets. Inhibition of PKCδ may offer a unique therapeutic approach in sepsis by targeting neutrophil-endothelial cell interactions. In this review, we will describe the overall structure and function of PKCs, with a focus on the specific phosphorylation sites of PKCδ that determine its critical role in cell signaling in inflammatory diseases such as sepsis. Current genetic and pharmacological tools, as well as in vivo models, that are used to examine the role of PKCδ in inflammation and sepsis are presented and the current state of emerging tools such as microfluidic assays in these studies is described.
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23
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Cinar I, Sirin B, Aydin P, Toktay E, Cadirci E, Halici I, Halici Z. Ameliorative effect of gossypin against acute lung injury in experimental sepsis model of rats. Life Sci 2019; 221:327-334. [DOI: 10.1016/j.lfs.2019.02.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/08/2019] [Accepted: 02/18/2019] [Indexed: 02/06/2023]
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Smith TL, Van Slyke P, Jones N, Dumont DJ, McGlade CJ. Tie2 signalling through Erk1/2 regulates TLR4 driven inflammation. Cell Signal 2018; 51:211-221. [DOI: 10.1016/j.cellsig.2018.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/26/2018] [Accepted: 08/01/2018] [Indexed: 12/17/2022]
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Interaction with an endothelial lumen increases neutrophil lifetime and motility in response to P aeruginosa. Blood 2018; 132:1818-1828. [PMID: 30143504 DOI: 10.1182/blood-2018-05-848465] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/14/2018] [Indexed: 12/12/2022] Open
Abstract
Neutrophil infiltration into tissues is essential for host defense and pathogen clearance. Although many of the signaling pathways involved in the transendothelial migration of neutrophils are known, the role of the endothelium in regulating neutrophil behavior in response to infection within interstitial tissues remains unclear. Here we developed a microscale 3-dimensional (3D) model that incorporates an endothelial lumen, a 3D extracellular matrix, and an intact bacterial source to model the host microenvironment. Using this system, we show that an endothelial lumen significantly increased neutrophil migration toward a source of Pseudomonas aeruginosa Surprisingly, we found neutrophils, which were thought to be short-lived cells in vitro, migrate for up to 24 hours in 3D in the presence of an endothelial lumen and bacteria. In addition, we found that endothelial cells secrete inflammatory mediators induced by the presence of P aeruginosa, including granulocyte-macrophage colony-stimulating factor (GM-CSF), a known promoter of neutrophil survival, and interleukin (IL)-6, a proinflammatory cytokine. We found that pretreatment of neutrophils with a blocking antibody against the IL-6 receptor significantly reduced neutrophil migration to P aeruginosa but did not alter neutrophil lifetime, indicating that secreted IL-6 is an important signal between endothelial cells and neutrophils that mediates migration. Taken together, these findings demonstrate an important role for endothelial paracrine signaling in neutrophil migration and survival.
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Ugan RA, Cadirci E, Halici Z, Toktay E, Cinar I. The role of urotensin-II and its receptors in sepsis-induced lung injury under diabetic conditions. Eur J Pharmacol 2018; 818:457-469. [DOI: 10.1016/j.ejphar.2017.11.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 02/07/2023]
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Abstract
The innate immune system represents the first line of defense against pathogens and comprises both a cellular and a humoral arm. Fluid-phase pattern recognition molecules (PRMs), which include collectins, ficolins, and pentraxins, are key components of the humoral arm of innate immunity and are expressed by a variety of cells, including myeloid, epithelial, and endothelial cells, mainly in response to infectious and inflammatory conditions. Soluble PRMs share basic multifunctional properties including activation and regulation of the complement cascade, opsonization of pathogens and apoptotic cells, regulation of leukocyte extravasation, and fine-tuning of inflammation. Therefore, soluble PRMs are part of the immune response and retain antibody-like effector functions. Here, we will review the expression and general function of soluble PRMs, focusing our attention on the long pentraxin PTX3.
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Lawendy AR, Bihari A, Sanders DW, Badhwar A, Cepinskas G. Compartment syndrome causes systemic inflammation in a rat. Bone Joint J 2016; 98-B:1132-7. [DOI: 10.1302/0301-620x.98b8.36325] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 04/07/2016] [Indexed: 01/13/2023]
Abstract
Aims Compartment syndrome results from increased intra-compartmental pressure (ICP) causing local tissue ischaemia and cell death, but the systemic effects are not well described. We hypothesised that compartment syndrome would have a profound effect not only on the affected limb, but also on remote organs. Methods Using a rat model of compartment syndrome, its systemic effects on the viability of hepatocytes and on inflammation and circulation were directly visualised using intravital video microscopy. Results We found that hepatocellular injury was significantly higher in the compartment syndrome group (192 PI-labelled cells/10-1 mm3, standard error of the mean (sem) 51) compared with controls (30 PI-labelled cells/10-1 mm3, sem 12, p < 0.01). The number of adherent venular white blood cells was significantly higher for the compartment syndrome group (5 leukocytes/30s/10 000 μm2, sem 1) than controls (0.2 leukocytes/30 s/10 000 μm2, sem 0.2, p < 0.01). Volumetric blood flow was not significantly different between the two groups, although there was an increase in the heterogeneity of perfusion. Conclusions Compartment syndrome can be accompanied by severe systemic inflammation and end organ damage. This study provides evidence of the relationship between compartment syndrome in a limb and systemic inflammation and dysfunction in a remote organ. Cite this article: Bone Joint J 2016; 98-B:1132–7.
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Affiliation(s)
- A-R. Lawendy
- Victoria Hospital, London
Health Sciences Centre, 800 Commissioners Road
East London, Ontario, N6A
4G5, Canada
| | - A. Bihari
- Victoria Hospital, London
Health Sciences Centre, 800 Commissioners Road
East London, Ontario, N6A
4G5, Canada
| | - D. W. Sanders
- Victoria Hospital, London
Health Sciences Centre, 800 Commissioners Road
East London, Ontario, N6A
4G5, Canada
| | - A. Badhwar
- Davol, A Bard Company, Warwick, Rhode
Island, USA
| | - G. Cepinskas
- Victoria Hospital, London
Health Sciences Centre, 800 Commissioners Road
East London, Ontario, N6A
4G5, Canada
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Endothelial Dysfunction and Inflammation: Immunity in Rheumatoid Arthritis. Mediators Inflamm 2016; 2016:6813016. [PMID: 27122657 PMCID: PMC4829719 DOI: 10.1155/2016/6813016] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 03/09/2016] [Accepted: 03/17/2016] [Indexed: 12/14/2022] Open
Abstract
Inflammation, as a feature of rheumatoid arthritis (RA), leads to the activation of endothelial cells (ECs). Activated ECs induce atherosclerosis through an increased expression of leukocyte adhesion molecules. Endothelial dysfunction (ED) is recognized as a failure of endothelial repair mechanisms. It is also an early preclinical marker of atherosclerosis and is commonly found in RA patients. RA is now established as an independent cardiovascular risk factor, while mechanistic determinants of ED in RA are still poorly understood. An expanding body of study has shown that EC at a site of RA is both active participant and regulator of inflammatory process. Over the last decade, a role for endothelial dysfunction in RA associated with cardiovascular disease (CVD) has been hypothesized. At the same time, several maintenance drugs targeting this phenomenon have been tested, which has promising results. Assessment of endothelial function may be a useful tool to identify and monitor RA patients.
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Shoda T, Futamura K, Orihara K, Emi-Sugie M, Saito H, Matsumoto K, Matsuda A. Recent advances in understanding the roles of vascular endothelial cells in allergic inflammation. Allergol Int 2016; 65:21-9. [PMID: 26666487 DOI: 10.1016/j.alit.2015.08.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 07/30/2015] [Accepted: 08/10/2015] [Indexed: 12/14/2022] Open
Abstract
Allergic disorders commonly involve both chronic tissue inflammation and remodeling caused by immunological reactions to various antigens on tissue surfaces. Due to their anatomical location, vascular endothelial cells are the final responders to interact with various exogenous factors that come into contact with the epithelial surface, such as pathogen-associated molecular patterns (PAMPs) and antigens. Recent studies have shed light on the important roles of endothelial cells in the development and exacerbation of allergic disorders. For instance, endothelial cells have the greatest potential to produce several key molecules that are deeply involved in allergic inflammation, such as periostin and thymus and activation-regulated chemokine (TARC/CCL17). Additionally, endothelial cells were recently shown to be important functional targets for IL-33--an essential regulator of allergic inflammation. Notably, almost all endothelial cell responses and functions involved in allergic inflammation are not suppressed by corticosteroids. These corticosteroid-refractory endothelial cell responses and functions include TNF-α-associated angiogenesis, leukocyte adhesion, IL-33-mediated responses and periostin and TARC production. Therefore, these unique responses and functions of endothelial cells may be critically involved in the pathogenesis of various allergic disorders, especially their refractory processes. Here, we review recent studies, including ours, which have elucidated previously unknown pathophysiological roles of vascular endothelial cells in allergic inflammation and discuss the possibility of endothelium-targeted therapy for allergic disorders.
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Affiliation(s)
- Tetsuo Shoda
- Department of Allergy and Immunology, National Research Institute for Child Health and Development, Tokyo, Japan.
| | - Kyoko Futamura
- Department of Allergy and Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kanami Orihara
- Department of Allergy and Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Maiko Emi-Sugie
- Department of Allergy and Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hirohisa Saito
- Department of Allergy and Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kenji Matsumoto
- Department of Allergy and Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Akio Matsuda
- Department of Allergy and Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
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Eğin S, Açıksarı K, Ercan G, Aydın AF, Üstyol EA, Eser M, Tanrıverdi G, Yanar HT. Effects of pentoxifylline on oxidative stress in rats with abdominal compartment syndrome model. INTERNATIONAL JOURNAL OF SURGERY OPEN 2016. [DOI: 10.1016/j.ijso.2016.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Teixeira P, Napoleão P, Saldanha C. S-nitrosoglutathione efflux in the erythrocyte. Clin Hemorheol Microcirc 2015; 60:397-404. [DOI: 10.3233/ch-141855] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Fuchs S, Hsieh LT, Saarberg W, Erdelmeier CAJ, Wichelhaus TA, Schaefer L, Koch E, Fürst R. Haemanthus coccineus extract and its main bioactive component narciclasine display profound anti-inflammatory activities in vitro and in vivo. J Cell Mol Med 2015; 19:1021-32. [PMID: 25754537 PMCID: PMC4420604 DOI: 10.1111/jcmm.12493] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 01/05/2015] [Indexed: 12/12/2022] Open
Abstract
Haemanthus coccineus extracts (HCE) have traditionally been used to treat a variety of diseases, like febrile colds or asthma. Since new therapeutic options against inflammatory processes are still urgently needed, we aimed to pharmacologically characterise the anti-inflammatory potential of HCEin vitro and in vivo and to identify the underlying bioactive component(s). The action of HCE on oedema formation and leucocyte infiltration were analysed in two murine models of inflammation (dermal oedema induced by arachidonic acid and croton oil; kidney injury caused by unilateral ureteral obstruction). The interaction of leucocytes with endothelial cells (ECs) as well as the activation parameters of these two cell types were analysed. Moreover, the nuclear factor κB (NFκB) pathway was investigated in detail in ECs. Using different fractions of HCE, the bioactive principle was identified. In vivo, HCE (450 mg/kg orally or 2 mg/kg intraperitoneally) inhibited oedema formation, leucocyte infiltration and cytokine synthesis. In vitro, HCE (100-300 ng/ml) blocked leucocyte-EC interaction as well as the activation of isolated leucocytes (cytokine synthesis and proliferation) and of primary ECs (adhesion molecule expression). HCE suppressed NFκB-dependent gene transcription in the endothelium, but did not interfere with the NFκB activation cascade (IκB degradation, p65 nuclear translocation and NFκB DNA-binding activity). The alkaloid narciclasine was elucidated as the bioactive compound responsible for the anti-inflammatory action of HCE. Our study highlights HCE and its main alkaloid narciclasine as novel interesting approach for the treatment of inflammation-related disorders.
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Affiliation(s)
- Simone Fuchs
- Institute of Pharmaceutical Biology, Biocenter, Goethe-University, Frankfurt/Main, Germany; Department of Pharmacy, Pharmaceutical Biology, University of Munich, Munich, Germany
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Omatsu T, Cepinskas G, Clarson C, Patterson EK, Alharfi IM, Summers K, Couraud PO, Romero IA, Weksler B, Fraser DD. CXCL1/CXCL8 (GROα/IL-8) in human diabetic ketoacidosis plasma facilitates leukocyte recruitment to cerebrovascular endothelium in vitro. Am J Physiol Endocrinol Metab 2014; 306:E1077-84. [PMID: 24619879 DOI: 10.1152/ajpendo.00659.2013] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Diabetic ketoacidosis (DKA) in children is associated with intracranial vascular complications, possibly due to leukocyte-endothelial interactions. Our aim was to determine whether DKA-induced inflammation promoted leukocyte adhesion to activated human cerebrovascular endothelium. Plasma was obtained from children with type 1 diabetes either in acute DKA or in an insulin-controlled state (CON). Plasma concentrations of 21 inflammatory analytes were compared between groups. DKA was associated with altered circulating levels of ↑CXCL1 (GROα), ↑CXCL8 (IL-8), ↑IL-6, ↑IFNα2, and ↓CXCL10 (IP-10) compared with CON. These plasma analyte measurements were then used to create physiologically relevant cytokine mixtures (CM). Human cerebral microvascular endothelial cells (hCMEC/D3) were stimulated with either plasma (DKA-P or CON-P) or CM (DKA-CM or CON-CM) and assessed for polymorphonuclear leukocyte (PMN) adhesion. Stimulation of hCMEC/D3 with DKA-P or DKA-CM increased PMN adhesion to hCMEC/D3 under "flow" conditions. PMN adhesion to hCMEC/D3 was suppressed with neutralizing antibodies to CXCL1/CXCL8 or their hCMEC/D3 receptors CXCR1/CXCR2. DKA-P, but not DKA-CM, initiated oxidative stress in hCMEC/D3. Expression of ICAM-1, VCAM-1, and E-selectin were unaltered on hCMEC/D3 by either DKA-P or DKA-CM. In summary, DKA elicits inflammation in children associated with changes in circulating cytokines/chemokines. Increased CXCL1/CXCL8 instigated PMN adhesion to hCMEC/D3, possibly contributing to DKA-associated intracranial vascular complications.
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Affiliation(s)
- Tatsushi Omatsu
- Centre for Critical Illness Research, London, Ontario, Canada
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Stapleton PA, Nurkiewicz TR. Vascular distribution of nanomaterials. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 6:338-48. [PMID: 24777845 DOI: 10.1002/wnan.1271] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 03/19/2014] [Accepted: 03/29/2014] [Indexed: 02/06/2023]
Abstract
UNLABELLED Once considered primarily occupational, novel nanotechnology innovations, and applications have led to widespread domestic use and intentional biomedical exposures. With these exciting advances, the breadth and depth of toxicological considerations must also be expanded. The vascular system interacts with every tissue in the body, striving to maintain homeostasis. Engineered nanomaterials (ENM) have been reported to distribute in many different tissues and organs. However, these observations have tended to use approaches requiring tissue homogenization and/or gross organ analyses. These techniques, while effective in establishing presence, preclude an exact determination of where ENM are deposited within a tissue. If nanotechnology is to achieve its full potential, it is necessary to identify this exact distribution and deposition of ENM throughout the cardiovascular system, with respect to vascular hemodynamics and in vivo ENM modifications taken into account. Distinct levels of the vasculature will first be described as individual compartments. Then the vasculature will be considered as a whole. These unique compartments and biophysical conditions will be discussed in terms of their propensity to favor ENM deposition. Understanding levels of the vasculature will also be discussed. Ultimately, future studies must verify the mechanisms speculated on and presented herein. CONFLICT OF INTEREST The authors have declared no conflicts of interest for this article. For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Phoebe A Stapleton
- Center for Cardiovascular and Respiratory Sciences, West Virginia University School of Medicine, Morgantown, WV, USA; Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
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Predescu DN, Bardita C, Tandon R, Predescu SA. Intersectin-1s: an important regulator of cellular and molecular pathways in lung injury. Pulm Circ 2013; 3:478-98. [PMID: 24618535 PMCID: PMC4070809 DOI: 10.1086/674439] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Abstract Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are severe syndromes resulting from the diffuse damage of the pulmonary parenchyma. ALI and ARDS are induced by a plethora of local or systemic insults, leading to the activation of multiple pathways responsible for injury, resolution, and repair or scarring of the lungs. Despite the large efforts aimed at exploring the roles of different pathways in humans and animal models and the great strides made in understanding the pathogenesis of ALI/ARDS, the only viable treatment options are still dependent on ventilator and cardiovascular support. Investigation of the pathophysiological mechanisms responsible for initiation and resolution or advancement toward lung scarring in ALI/ARDS animal models led to a better understanding of the disease's complexity and helped in elucidating the links between ALI and systemic multiorgan failure. Although animal models of ALI/ARDS have pointed out a variety of new ideas for study, there are still limited data regarding the initiating factors, the critical steps in the progression of the disease, and the central mechanisms dictating its resolution or progression to lung scarring. Recent studies link deficiency of intersectin-1s (ITSN-1s), a prosurvival protein of lung endothelial cells, to endothelial barrier dysfunction and pulmonary edema as well as to the repair/recovery from ALI. This review discusses the effects of ITSN-1s deficiency on pulmonary endothelium and its significance in the pathology of ALI/ARDS.
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Affiliation(s)
- Dan N Predescu
- 1 Department of Pharmacology, Rush University, Chicago, Illinois, USA
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Mai J, Virtue A, Shen J, Wang H, Yang XF. An evolving new paradigm: endothelial cells--conditional innate immune cells. J Hematol Oncol 2013; 6:61. [PMID: 23965413 PMCID: PMC3765446 DOI: 10.1186/1756-8722-6-61] [Citation(s) in RCA: 278] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 08/19/2013] [Indexed: 12/23/2022] Open
Abstract
Endothelial cells (ECs) are a heterogeneous population that fulfills many physiological processes. ECs also actively participate in both innate and adaptive immune responses. ECs are one of the first cell types to detect foreign pathogens and endogenous metabolite-related danger signals in the bloodstream, in which ECs function as danger signal sensors. Treatment with lipopolysaccharide activates ECs, causing the production of pro-inflammatory cytokines and chemokines, which amplify the immune response by recruiting immune cells. Thus, ECs function as immune/inflammation effectors and immune cell mobilizers. ECs also induce cytokine production by immune cells, in which ECs function as immune regulators either by activating or suppressing immune cell function. In addition, under certain conditions, ECs can serve as antigen presenting cells (antigen presenters) by expressing both MHC I and II molecules and presenting endothelial antigens to T cells. These facts along with the new concept of endothelial plasticity suggest that ECs are dynamic cells that respond to extracellular environmental changes and play a meaningful role in immune system function. Based on these novel EC functions, we propose a new paradigm that ECs are conditional innate immune cells. This paradigm provides a novel insight into the functions of ECs in inflammatory/immune pathologies.
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Affiliation(s)
- Jietang Mai
- Centers of Metabolic Disease Research, Cardiovascular Research, Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Anthony Virtue
- Centers of Metabolic Disease Research, Cardiovascular Research, Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Jerry Shen
- Department of Family Medicine, College of Community Health Sciences, University of Alabama, Tuscaloosa, AL 35487, USA
| | - Hong Wang
- Centers of Metabolic Disease Research, Cardiovascular Research, Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Xiao-Feng Yang
- Centers of Metabolic Disease Research, Cardiovascular Research, Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA 19140, USA
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Barone F, Nayar S, Buckley CD. The role of non-hematopoietic stromal cells in the persistence of inflammation. Front Immunol 2013; 3:416. [PMID: 23335923 PMCID: PMC3543945 DOI: 10.3389/fimmu.2012.00416] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 12/20/2012] [Indexed: 11/13/2022] Open
Abstract
Inflammation results from the complex interaction between hematopoietic and stromal cells and growing evidence supports a key role for the stroma in driving the switch from acute resolving to persistence in chronic inflammatory diseases. Stromal cells have also been shown to play a critical role in cancer biology, being involved in cancer growth, dissemination, and inhibition of the autologous immune response, ultimately favoring persistence and metastatic spread. Similarly, blood and lymphatic endothelial cells contribute to tissue homeostasis during physiological inflammation but also lead to discorded leukocyte and tumor cell accumulation in pathological inflammation and cancer. This review aims to summarize the role that pathogenic stroma plays in the pathogenesis of diseases such as cancer and chronic inflammation.
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Affiliation(s)
- Francesca Barone
- Centre for Translational Inflammation Research, Arthritis Research UK, Rheumatology Research Group, School of Immunity and Infection, College of Medical and Dental Sciences, University of Birmingham Research Laboratories, Queen Elizabeth Hospital Birmingham, UK
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Issekutz AC, Rowter D, Macmillan HF. Intravenous immunoglobulin G (IVIG) inhibits IL-1- and TNF-α-dependent, but not chemotactic-factor-stimulated, neutrophil transendothelial migration. Clin Immunol 2011; 141:187-96. [PMID: 21917526 DOI: 10.1016/j.clim.2011.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 08/04/2011] [Accepted: 08/05/2011] [Indexed: 11/26/2022]
Abstract
High-dose intravenous immunoglobulin (IVIG) has anti-inflammatory effects via incompletely understood mechanisms. By investigating whether IVIG might modulate neutrophil (PMN) recruitment, we observed that IVIG dose-dependently inhibited (by 30-50%) PMN transendothelial migration (TEM) across human umbilical vein endothelial cells (EC) stimulated with IL-1α, IL-1β, TNF-α or IL-1β+TNF-α. Inhibition required the presence of IVIG with the responding PMNs, was attributable to the F(ab)(2) portion and was unrelated to putative contaminants in IVIG. IVIG did not inhibit IL-1β- or TNF-α-induced increase of PMN adhesion to EC, nor did it affect C5a- or IL-8-induced PMN TEM across unstimulated EC. Effects of IVIG and F(ab)(2) fragments were not associated with PMN activation, assessed by CD62L shedding, CD11b upregulation or PMN shape. Thus, IVIG selectively inhibits PMN TEM across inflammatory-cytokine-stimulated - but not unstimulated - EC, perhaps contributing to therapeutic benefit in chronic inflammation with minimal impact on chemotactic-factor-induced PMN recruitment during acute infection.
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Affiliation(s)
- Andrew C Issekutz
- Department of Pediatrics, Dalhousie University, IWK Health Centre, Halifax, Nova Scotia, Canada.
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Cepinskas G, Wilson JX. Inflammatory response in microvascular endothelium in sepsis: role of oxidants. J Clin Biochem Nutr 2011; 42:175-84. [PMID: 18545638 PMCID: PMC2386519 DOI: 10.3164/jcbn.2008026] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2007] [Accepted: 01/08/2008] [Indexed: 12/22/2022] Open
Abstract
Sepsis, as a severe systemic inflammatory response to bacterial infection, represents a major clinical problem. It is characterized by the excessive production of reactive oxygen species (ROS) both in the circulation and in the affected organs. The excessive generation of ROS inevitably leads to oxidative stress in the microvasculature and has been implicated as a causative event in a number of pathologies including sepsis. In this review, we focus on the role of oxidative and nitrosative stress during the early onset of sepsis. Changes in microvascular endothelial cells, the cell type that occurs in all organs, are discussed. The mechanisms underlying septic induction of oxidative and nitrosative stresses, the functional consequences of these stresses, and potential adjunct therapies for microvascular dysfunction in sepsis are identified.
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Affiliation(s)
- Gediminas Cepinskas
- Centre for Critical Illness Research, Lawson Health Research Institute, 800 Commissioners Rd. E., London, Ontario, N6A 4G4, Canada
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Félétou M. The Endothelium, Part I: Multiple Functions of the Endothelial Cells -- Focus on Endothelium-Derived Vasoactive Mediators. ACTA ACUST UNITED AC 2011. [DOI: 10.4199/c00031ed1v01y201105isp019] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Aversa S, Pellegrino S, Barberi I, Reiter RJ, Gitto E. Potential utility of melatonin as an antioxidant during pregnancy and in the perinatal period. J Matern Fetal Neonatal Med 2011; 25:207-21. [PMID: 21557691 DOI: 10.3109/14767058.2011.573827] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Reactive oxygen species (ROS) play a critical role in the pathogenesis of various diseases during pregnancy and the perinatal period. Newborns are more prone to oxidative stress than individuals later in life. During pregnancy, increased oxygen demand augments the rate of production of ROS and women, even during normal pregnancies, experience elevated oxidative stress compared with non-pregnant women. ROS generation is also increased in the placenta during preeclampsia. Melatonin is a highly effective direct free-radical scavenger, indirect antioxidant, and cytoprotective agent in human pregnancy and it appears to be essential for successful pregnancy. This suggests a role for melatonin in human reproduction and in neonatal pathologies (asphyxia, respiratory distress syndrome, sepsis, etc.). This review summarizes current knowledge concerning the role for melatonin in human pregnancy and in the newborn. Numerous studies agree that short-term melatonin therapy is highly effective in reducing complications during pregnancy and in the neonatal period. No significant toxicity or treatment-related side effects with long-term melatonin therapy in children and adults have been reported. Treatment with melatonin might result in a wide range of health benefits, including improved quality of life and reduced healthcare costs.
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Affiliation(s)
- Salvatore Aversa
- Neonatal Intensive Care Unit, Department of Pediatrics, University of Messina, Italy
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Novel insights into molecular mechanisms of abruption-induced preterm birth. Expert Rev Mol Med 2010; 12:e35. [PMID: 21040617 DOI: 10.1017/s1462399410001675] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Preterm birth (PTB) complicates more than 12% of all deliveries. Despite significant research, the aetiology of most cases of PTB remains elusive. Two major antecedents of PTB, intra-amniotic infection and decidual haemorrhage (abruption), can exhibit dissimilar demographic and genetic predispositions, despite sharing common molecular and cellular pathways. The use of high-throughput, high-dimensional technologies reveals substantial crosstalk between the coagulation and inflammation pathways. Tissue factor, thrombin and cytokines are key mediators of this crosstalk. Abruptions are associated with excess thrombin generated from decidual-cell-expressed tissue factor. Although thrombin is a primary mediator of the coagulation cascade, it can also promote inflammation-associated PTB by enhancing expression of matrix metalloproteinase and neutrophil-chemoattracting and -activating chemokines. Here, we provide novel insights into the molecular mechanisms and pathways leading to PTB in the setting of placental abruption.
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Carbon monoxide liberated from CO-releasing molecule (CORM-2) attenuates ischemia/reperfusion (I/R)-induced inflammation in the small intestine. Inflammation 2010; 33:92-100. [PMID: 19842024 DOI: 10.1007/s10753-009-9162-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CORM-released CO has been shown to be beneficial in resolution of acute inflammation. The acute phase of intestinal ischemia-reperfusion (I/R) injury is characterized by oxidative stress-related inflammation and leukocyte recruitment. In this study, we assessed the effects and potential mechanisms of CORM-2-released CO in modulation of inflammatory response in the small intestine following I/R-challenge. To this end mice (C57Bl/6) small intestine were challenged with ischemia by occluding superior mesenteric artery (SMA) for 45 min. CORM-2 (8 mg/kg; i.v.) was administered immediately before SMA occlusion. Sham operated mice were injected with vehicle (0.25% DMSO). Inflammatory response in the small intestine (jejunum) was assessed 4 h following reperfusion by measuring tissue levels of TNF-alpha protein (ELISA), adhesion molecules E-selectin and ICAM-1 (Western blot), NF-kappaB activation (EMSA), along with PMN tissue accumulation (MPO assay) and leukocyte rolling/adhesion in the microcirculation of jejunum (intravital microscopy). The obtained results indicate that tissue levels of TNF-alpha, E-selectin and ICAM-1 protein expression, activation of NF-kappaB, and subsequent accumulation of PMN were elevated in I/R-challenged jejunum. The above changes were significantly attenuated in CORM-2-treated mice. Taken together these findings indicate that CORM-2-released CO confers anti-inflammatory effects by interfering with NF-kappaB activation and subsequent up-regulation of vascular pro-adhesive phenotype in I/R-challenged small intestine.
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Libby P, DiCarli M, Weissleder R. The vascular biology of atherosclerosis and imaging targets. J Nucl Med 2010; 51 Suppl 1:33S-37S. [PMID: 20395349 DOI: 10.2967/jnumed.109.069633] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The growing worldwide health challenge of atherosclerosis, together with advances in imaging technologies, have stimulated considerable interest in novel approaches to gauging this disease. The last several decades have witnessed a burgeoning in understanding of the molecular pathways involved in atherogenesis, lesion progression, and the mechanisms underlying the complications of human atherosclerotic plaques. The imaging of atherosclerosis is reaching beyond anatomy to encompass assessment of aspects of plaque biology related to the pathogenesis and complication of the disease. The harnessing of these biologic insights promises to provide a plethora of new targets for molecular imaging of atherosclerosis. The goals for the years to come must include translation of the experimental work to visualization of these appealing biologic targets in humans.
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Affiliation(s)
- Peter Libby
- Donald W. Reynolds Cardiovascular Clinical Research Center, Harvard Medical School, Boston, Massachusetts, USA.
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Deban L, Russo RC, Sironi M, Moalli F, Scanziani M, Zambelli V, Cuccovillo I, Bastone A, Gobbi M, Valentino S, Doni A, Garlanda C, Danese S, Salvatori G, Sassano M, Evangelista V, Rossi B, Zenaro E, Constantin G, Laudanna C, Bottazzi B, Mantovani A. Regulation of leukocyte recruitment by the long pentraxin PTX3. Nat Immunol 2010; 11:328-34. [DOI: 10.1038/ni.1854] [Citation(s) in RCA: 335] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Accepted: 02/12/2010] [Indexed: 02/07/2023]
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New insights into the regulation of ion channels by integrins. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2010; 279:135-90. [PMID: 20797679 DOI: 10.1016/s1937-6448(10)79005-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
By controlling cell adhesion to the extracellular matrix, integrin receptors regulate processes as diverse as cell migration, proliferation, differentiation, apoptosis, and synaptic stability. Because the underlying mechanisms are generally accompanied by changes in transmembrane ion flow, a complex interplay occurs between integrins, ion channels, and other membrane transporters. This reciprocal interaction regulates bidirectional signal transduction across the cell surface and may take place at all levels of control, from transcription to direct conformational coupling. In particular, it is becoming increasingly clear that integrin receptors form macromolecular complexes with ion channels. Besides contributing to the membrane localization of the channel protein, the integrin/channel complex can regulate a variety of downstream signaling pathways, centered on regulatory proteins like tyrosine kinases and small GTPases. In turn, the channel protein usually controls integrin activation and expression. We review some recent advances in the field, with special emphasis on hematology and neuroscience. Some oncological implications are also discussed.
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