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Sukocheva OA, Neganova ME, Aleksandrova Y, Burcher JT, Chugunova E, Fan R, Tse E, Sethi G, Bishayee A, Liu J. Signaling controversy and future therapeutical perspectives of targeting sphingolipid network in cancer immune editing and resistance to tumor necrosis factor-α immunotherapy. Cell Commun Signal 2024; 22:251. [PMID: 38698424 PMCID: PMC11064425 DOI: 10.1186/s12964-024-01626-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 04/21/2024] [Indexed: 05/05/2024] Open
Abstract
Anticancer immune surveillance and immunotherapies trigger activation of cytotoxic cytokine signaling, including tumor necrosis factor-α (TNF-α) and TNF-related apoptosis-inducing ligand (TRAIL) pathways. The pro-inflammatory cytokine TNF-α may be secreted by stromal cells, tumor-associated macrophages, and by cancer cells, indicating a prominent role in the tumor microenvironment (TME). However, tumors manage to adapt, escape immune surveillance, and ultimately develop resistance to the cytotoxic effects of TNF-α. The mechanisms by which cancer cells evade host immunity is a central topic of current cancer research. Resistance to TNF-α is mediated by diverse molecular mechanisms, such as mutation or downregulation of TNF/TRAIL receptors, as well as activation of anti-apoptotic enzymes and transcription factors. TNF-α signaling is also mediated by sphingosine kinases (SphK1 and SphK2), which are responsible for synthesis of the growth-stimulating phospholipid, sphingosine-1-phosphate (S1P). Multiple studies have demonstrated the crucial role of S1P and its transmembrane receptors (S1PR) in both the regulation of inflammatory responses and progression of cancer. Considering that the SphK/S1P/S1PR axis mediates cancer resistance, this sphingolipid signaling pathway is of mechanistic significance when considering immunotherapy-resistant malignancies. However, the exact mechanism by which sphingolipids contribute to the evasion of immune surveillance and abrogation of TNF-α-induced apoptosis remains largely unclear. This study reviews mechanisms of TNF-α-resistance in cancer cells, with emphasis on the pro-survival and immunomodulatory effects of sphingolipids. Inhibition of SphK/S1P-linked pro-survival branch may facilitate reactivation of the pro-apoptotic TNF superfamily effects, although the role of SphK/S1P inhibitors in the regulation of the TME and lymphocyte trafficking should be thoroughly assessed in future studies.
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Affiliation(s)
- Olga A Sukocheva
- Department of Hepatology, Royal Adelaide Hospital, Adelaide, SA, 5000, Australia.
| | - Margarita E Neganova
- Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, 142432, Russian Federation
- Arbuzov Institute of Organic and Physical Chemistry, Federal Research Center, Kazan Scientific Center, Russian Academy of Sciences, Kazan, 420088, Russian Federation
| | - Yulia Aleksandrova
- Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, 142432, Russian Federation
- Arbuzov Institute of Organic and Physical Chemistry, Federal Research Center, Kazan Scientific Center, Russian Academy of Sciences, Kazan, 420088, Russian Federation
| | - Jack T Burcher
- College of Osteopathic Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, FL, 34211, USA
| | - Elena Chugunova
- Arbuzov Institute of Organic and Physical Chemistry, Federal Research Center, Kazan Scientific Center, Russian Academy of Sciences, Kazan, 420088, Russian Federation
| | - Ruitai Fan
- Department of Radiation Oncology, Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Edmund Tse
- Department of Hepatology, Royal Adelaide Hospital, Adelaide, SA, 5000, Australia
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore
| | - Anupam Bishayee
- College of Osteopathic Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, FL, 34211, USA.
| | - Junqi Liu
- Department of Radiation Oncology, Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
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Massicotte-Azarniouch D, Herrera CA, Jennette JC, Falk RJ, Free ME. Mechanisms of vascular damage in ANCA vasculitis. Semin Immunopathol 2022; 44:325-345. [PMID: 35254509 PMCID: PMC9064952 DOI: 10.1007/s00281-022-00920-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 02/02/2022] [Indexed: 12/12/2022]
Abstract
The discovery of anti-neutrophil cytoplasmic antibodies (ANCA) and their antigenic targets, myeloperoxidase (MPO) and proteinase 3 (PR3), has led to further understanding as to the pathophysiologic processes that underlie vascular and tissue damage in ANCA vasculitis. ANCA trigger neutrophil activation leading to vascular damage in ANCA vasculitis. However, decades of study have determined that neutrophil activation alone is not sufficient to cause disease. Inflammatory stimuli are drivers of ANCA autoantigen expression and ANCA production. Certain infections or bacterial peptides may be crucial players in the initial steps of ANCA immunopathogenesis. Genetic and epigenetic alterations of gene encoding for MPO and PR3 provide additional disturbances to the immune homeostasis which provide a substrate for pathogenic ANCA formation from an adaptive immune system predisposed to autoreactivity. Promoted by inflammatory cytokines, ANCA binding leads to neutrophil activation, a process characterized by conformational changes, production and release of cytotoxic substances, and alternative complement pathway activation, thus creating an intense inflammatory milieu. This cascade of events perpetuates a vicious cycle of further inflammatory cell recruitment and activation, culminating in tissue necrosis. Our understanding of the pathogenic process in ANCA vasculitis paves the way for the development of therapies targeting crucial steps in this process. The greater appreciation of the role for complement, monocytes, and the adaptive immune system has already led to novel complement blockers and is poised to lead to further innovations which will allow for tailored antigen- or cell-specific immunotherapy targeting the autoimmune process without exposure to undue risks or toxicities.
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Affiliation(s)
- David Massicotte-Azarniouch
- Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Carolina A Herrera
- Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina, Chapel Hill, NC, USA
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - J Charles Jennette
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ronald J Falk
- Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Meghan E Free
- Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina, Chapel Hill, NC, USA.
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Network Pharmacology Analysis of the Identification of Phytochemicals and Therapeutic Mechanisms of Paeoniae Radix Alba for the Treatment of Asthma. J Immunol Res 2021; 2021:9659304. [PMID: 34557554 PMCID: PMC8455205 DOI: 10.1155/2021/9659304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/17/2021] [Indexed: 11/30/2022] Open
Abstract
Background Paeoniae Radix Alba (PRA), the root of the plant Paeonia lactiflora Pall., has been suggested to play an important role for the treatment of asthma. A biochemical understanding of the clinical effects of Paeoniae Radix Alba is needed. Here, we explore the phytochemicals and therapeutic mechanisms via a systematic and comprehensive network pharmacology analysis. Methods Through TCMSP, PubChem, GeneCards database, and SwissTargetPrediction online tools, potential targets of active ingredients from PRA for the treatment of asthma were obtained. Cytoscape 3.7.2 was used to determine the target of active ingredients of PRA. Target protein interaction (PPI) network was constructed through the STRING database. The Gene Ontology (GO) biological process and Kyoto Encyclopedia of Genes and Genes (KEGG) pathway enrichment analysis were analyzed through the biological information annotation database (DAVID). Results Our results indicate that PRA contains 21 candidate active ingredients with the potential to treat asthma. The enrichment analysis of GO and KEGG pathways found that the treatment of asthma by PRA may be related to the process of TNF (tumor necrosis factor) release, which can regulate and inhibit multiple signaling pathways such as ceramide signaling. Conclusions Our work provides a phytochemical basis and therapeutic mechanisms of PRA for the treatment of asthma, which provides new insights on further research on PRA.
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HIV-1 Tat Protein Enters Dysfunctional Endothelial Cells via Integrins and Renders Them Permissive to Virus Replication. Int J Mol Sci 2020; 22:ijms22010317. [PMID: 33396807 PMCID: PMC7796023 DOI: 10.3390/ijms22010317] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/21/2020] [Accepted: 12/26/2020] [Indexed: 12/21/2022] Open
Abstract
Previous work has shown that the Tat protein of Human Immunodeficiency Virus (HIV)-1 is released by acutely infected cells in a biologically active form and enters dendritic cells upon the binding of its arginine-glycine-aspartic acid (RGD) domain to the α5β1, αvβ3, and αvβ5 integrins. The up-regulation/activation of these integrins occurs in endothelial cells exposed to inflammatory cytokines that are increased in HIV-infected individuals, leading to endothelial cell dysfunction. Here, we show that inflammatory cytokine-activated endothelial cells selectively bind and rapidly take up nano-micromolar concentrations of Tat, as determined by flow cytometry. Protein oxidation and low temperatures reduce Tat entry, suggesting a conformation- and energy-dependent process. Consistently, Tat entry is competed out by RGD-Tat peptides or integrin natural ligands, and it is blocked by anti-α5β1, -αvβ3, and -αvβ5 antibodies. Moreover, modelling–docking calculations identify a low-energy Tat-αvβ3 integrin complex in which Tat makes contacts with both the αv and β3 chains. It is noteworthy that internalized Tat induces HIV replication in inflammatory cytokine-treated, but not untreated, endothelial cells. Thus, endothelial cell dysfunction driven by inflammatory cytokines renders the vascular system a target of Tat, which makes endothelial cells permissive to HIV replication, adding a further layer of complexity to functionally cure and/or eradicate HIV infection.
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Velazquez FN, Hernandez-Corbacho M, Trayssac M, Stith JL, Bonica J, Jean B, Pulkoski-Gross MJ, Carroll BL, Salama MF, Hannun YA, Snider AJ. Bioactive sphingolipids: Advancements and contributions from the laboratory of Dr. Lina M. Obeid. Cell Signal 2020; 79:109875. [PMID: 33290840 PMCID: PMC8244749 DOI: 10.1016/j.cellsig.2020.109875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 02/06/2023]
Abstract
Sphingolipids and their synthetic enzymes have emerged as critical mediators in numerous diseases including inflammation, aging, and cancer. One enzyme in particular, sphingosine kinase (SK) and its product sphingosine-1-phosphate (S1P), has been extensively implicated in these processes. SK catalyzes the phosphorylation of sphingosine to S1P and exists as two isoforms, SK1 and SK2. In this review, we will discuss the contributions from the laboratory of Dr. Lina M. Obeid that have defined the roles for several bioactive sphingolipids in signaling and disease with an emphasis on her work defining SK1 in cellular fates and pathobiologies including proliferation, senescence, apoptosis, and inflammation.
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Affiliation(s)
- Fabiola N Velazquez
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Maria Hernandez-Corbacho
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Magali Trayssac
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Jeffrey L Stith
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Joseph Bonica
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA; Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790, USA
| | - Bernandie Jean
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Michael J Pulkoski-Gross
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA; Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790, USA
| | - Brittany L Carroll
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790, USA
| | - Mohamed F Salama
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA; Department of Biochemistry, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Yusuf A Hannun
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Ashley J Snider
- Department of Nutritional Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, AZ 85721, USA.
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Ulyanova T, Georgolopoulos G, Papayannopoulou T. Reappraising the role of α5 integrin and the microenvironmental support in stress erythropoiesis. Exp Hematol 2019; 81:16-31.e4. [PMID: 31887343 DOI: 10.1016/j.exphem.2019.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/13/2019] [Accepted: 12/15/2019] [Indexed: 02/06/2023]
Abstract
We previously studied the role of β1 integrin and some of its different α partners relevant to erythropoiesis. Although clear and consistent answers regarding the role of α4β1 (VLA-4) were evident, the role of its companion integrin α5β1 (VLA-5) was clouded by inconsistent outcomes in all prior publications. Furthermore, the functional consequences of integrin deficiencies only in microenvironmental (ME) cells supporting erythroid cell expansion and maturation post stress have never been explored. In the study described here, we created several additional mouse models in the aim of addressing unanswered questions regarding functional consequences of single or combined integrin deficiencies in erythroid cells or only in ME supporting cells. Our novel and expansive data solidified the intrinsic requirement of both α4 and α5 integrins in erythroid cells for their proliferative expansion and maturation in response to stress; α5 integrin alone, deleted either early in all hematopoietic cells or only in erythroid cell, has only a redundant role in proliferative expansion and is dispensable for erythroid maturation. By contrast, α4 integrin, on its own, exerts a dominant effect on timely and optimal erythroid maturation. Deficiency of both α4 and α5 integrins in ME cells, including macrophages, does not negatively influence stress response by normal erythroid cells, in great contrast to the effect of ME cells deficient in all β1 integrins. Collectively the present data offer deeper insight into the coordination of different β1 integrin functional activities in erythroid cells or in ME cells for optimal erythroid stress response.
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Affiliation(s)
- Tatyana Ulyanova
- Division of Hematology, Department of Medicine, University of Washington, Seattle, Washington, USA
| | | | - Thalia Papayannopoulou
- Division of Hematology, Department of Medicine, University of Washington, Seattle, Washington, USA.
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Labus J, Wöltje K, Stolte KN, Häckel S, Kim KS, Hildmann A, Danker K. IL-1β promotes transendothelial migration of PBMCs by upregulation of the FN/α 5β 1 signalling pathway in immortalised human brain microvascular endothelial cells. Exp Cell Res 2018; 373:99-111. [PMID: 30342992 DOI: 10.1016/j.yexcr.2018.10.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 09/29/2018] [Accepted: 10/05/2018] [Indexed: 02/06/2023]
Abstract
Neuroinflammation is often associated with pathological changes in the function of the blood-brain barrier (BBB) caused by disassembly of tight and adherens junctions that under physiological conditions are important for the maintenance of the BBB integrity. Consequently, in inflammation the BBB becomes dysfunctional, facilitating leukocyte traversal of the barrier and accumulation of immune cells within the brain. The extracellular matrix (ECM) also contributes to BBB integrity but the significance of the main ECM receptors, the β1 integrins also expressed on endothelial cells, is less well understood. To evaluate whether β1 integrin function is affected during inflammation and impacts barrier function, we used a transformed human brain microvascular endothelial cell (THBMEC)-based Interleukin 1β (IL-1β)-induced inflammatory in vitro BBB model. We demonstrate that IL-1β increases cell-matrix adhesion and induces a redistribution of active β1 integrins to the basal surface. In particular, binding of α5β1 integrin to its ligand fibronectin is enhanced and α5β1 integrin-dependent signalling is upregulated. Additionally, localisation of the tight junction protein claudin-5 is altered. Blockade of the α5β1 integrin reduces the IL-1β-induced transendothelial migration of peripheral blood mononuclear cells (PBMCs). These data imply that IL-1β-induced inflammation not only destabilizes tight junctions but also increases α5β1 integrin-dependent cell-matrix adhesion to fibronectin.
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Affiliation(s)
- Josephine Labus
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Charitéplatz 1, 10117 Berlin, Germany
| | - Kerstin Wöltje
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Charitéplatz 1, 10117 Berlin, Germany
| | - Kim Natalie Stolte
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Charitéplatz 1, 10117 Berlin, Germany
| | - Sonja Häckel
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Charitéplatz 1, 10117 Berlin, Germany
| | - Kwang Sik Kim
- Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, 200 North Wolfe Street, 21287 Baltimore, USA
| | - Annette Hildmann
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Charitéplatz 1, 10117 Berlin, Germany
| | - Kerstin Danker
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Charitéplatz 1, 10117 Berlin, Germany.
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Integrated proteomic analysis of tumor necrosis factor α and interleukin 1β-induced endothelial inflammation. J Proteomics 2018; 192:89-101. [PMID: 30153514 DOI: 10.1016/j.jprot.2018.08.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/15/2018] [Accepted: 08/23/2018] [Indexed: 12/11/2022]
Abstract
The vascular endothelium provides a unique interaction plane for plasma proteins and leukocytes in inflammation. The pro-inflammatory cytokines Tumor Necrosis Factor α (TNFα) and interleukin 1β (IL-1β) have a profound effect on endothelial cells, which includes increased levels of adhesion molecules and a disrupted barrier function. To assess the endothelial response to these cytokines at the protein level, we evaluated changes in the whole proteome, cell surface proteome and phosphoproteome after 24 h of cytokine treatment. The effects of TNFα and IL-1β on endothelial cells were strikingly similar and included changes in proteins not previously associated with endothelial inflammation. Temporal profiling revealed time-dependent proteomic changes, including a limited number of early responsive proteins such as adhesion receptors ICAM1 and SELE. In addition, this approach uncovered a greater number of late responsive proteins, including proteins related to self-antigen peptide presentation, and a transient increase in ferritin. Peptide-based cell surface proteomics revealed extensive changes at the cell surface, which were in agreement with the whole proteome. In addition, site-specific changes within ITGA5 and ICAM1 were detected. Combined, our integrated proteomic data provide detailed information on endothelial inflammation, emphasize the role of the extracellular matrix therein, and include potential targets for therapeutic intervention. SIGNIFICANCE: Pro-inflammatory cytokines induce the expression of cell adhesion molecules in vascular endothelial cells. These molecules mediate the adhesion and migration of immune cells across the vessel wall, which is a key process to resolve infections in the underlying tissue. Dysregulation of endothelial inflammation can contribute to vascular diseases and the vascular endothelium is therefore an attractive target to control inflammation. Current strategies targeting endothelial adhesion molecules, including PECAM, CD99, ICAM1 and VCAM1 do not completely prevent transmigration. To identify additional therapeutic targets, we mapped the endothelial proteome after pro-inflammatory cytokine treatment. In addition to the whole proteome, we assessed the surface proteome to focus on cell adhesion molecules, and the phosphoproteome to uncover protein activation states. Here, we present an integrated overview of affected processes which further improves our understanding of endothelial inflammation and may eventually aid in therapeutic intervention of imbalanced inflammation.
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Sphingosine Kinase 1 Regulates Inflammation and Contributes to Acute Lung Injury in Pneumococcal Pneumonia via the Sphingosine-1-Phosphate Receptor 2. Crit Care Med 2018; 46:e258-e267. [DOI: 10.1097/ccm.0000000000002916] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Rojas-Canales D, Penko D, Myo Min KK, Parham KA, Peiris H, Haberberger RV, Pitson SM, Drogemuller C, Keating DJ, Grey ST, Coates PT, Bonder CS, Jessup CF. Local Sphingosine Kinase 1 Activity Improves Islet Transplantation. Diabetes 2017; 66:1301-1311. [PMID: 28174291 DOI: 10.2337/db16-0837] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 02/02/2017] [Indexed: 11/13/2022]
Abstract
Pancreatic islet transplantation is a promising clinical treatment for type 1 diabetes, but success is limited by extensive β-cell death in the immediate posttransplant period and impaired islet function in the longer term. Following transplantation, appropriate vascular remodeling is crucial to ensure the survival and function of engrafted islets. The sphingosine kinase (SK) pathway is an important regulator of vascular beds, but its role in the survival and function of transplanted islets is unknown. We observed that donor islets from mice deficient in SK1 (Sphk1 knockout) contain a reduced number of resident intraislet vascular endothelial cells. Furthermore, we demonstrate that the main product of SK1, sphingosine-1-phosphate, controls the migration of intraislet endothelial cells in vitro. We reveal in vivo that Sphk1 knockout islets have an impaired ability to cure diabetes compared with wild-type controls. Thus, SK1-deficient islets not only contain fewer resident vascular cells that participate in revascularization, but likely also a reduced ability to recruit new vessels into the transplanted islet. Together, our data suggest that SK1 is important for islet revascularization following transplantation and represents a novel clinical target for improving transplant outcomes.
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Affiliation(s)
- Darling Rojas-Canales
- Discipline of Medicine, The University of Adelaide, Adelaide, Australia
- Central Northern Adelaide Renal and Transplantation Services, Royal Adelaide Hospital, Adelaide, Australia
| | - Daniella Penko
- Discipline of Medicine, The University of Adelaide, Adelaide, Australia
- Central Northern Adelaide Renal and Transplantation Services, Royal Adelaide Hospital, Adelaide, Australia
| | - Kay K Myo Min
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, Australia
| | - Kate A Parham
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, Australia
| | - Heshan Peiris
- Department of Human Physiology, Flinders University, Bedford Park, Australia
- Centre for Neuroscience, Flinders University, Bedford Park, Australia
| | | | - Stuart M Pitson
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, Australia
| | - Chris Drogemuller
- Discipline of Medicine, The University of Adelaide, Adelaide, Australia
- Central Northern Adelaide Renal and Transplantation Services, Royal Adelaide Hospital, Adelaide, Australia
| | - Damien J Keating
- Department of Human Physiology, Flinders University, Bedford Park, Australia
- Centre for Neuroscience, Flinders University, Bedford Park, Australia
- South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Shane T Grey
- Garvan Medical Institute, Darlinghurst, Australia
| | - Patrick T Coates
- Discipline of Medicine, The University of Adelaide, Adelaide, Australia
- Central Northern Adelaide Renal and Transplantation Services, Royal Adelaide Hospital, Adelaide, Australia
| | - Claudine S Bonder
- Discipline of Medicine, The University of Adelaide, Adelaide, Australia
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, Australia
| | - Claire F Jessup
- Discipline of Medicine, The University of Adelaide, Adelaide, Australia
- Centre for Neuroscience, Flinders University, Bedford Park, Australia
- Department of Anatomy & Histology, Flinders University, Bedford Park, Australia
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11
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Huang H, Huang Q, Wang F, Milner R, Li L. Cerebral ischemia-induced angiogenesis is dependent on tumor necrosis factor receptor 1-mediated upregulation of α5β1 and αVβ3 integrins. J Neuroinflammation 2016; 13:227. [PMID: 27586239 PMCID: PMC5009537 DOI: 10.1186/s12974-016-0697-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 08/20/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The pro-inflammatory cytokine, tumor necrosis factor-α (TNF-α), is expressed in ischemic tissue and is known to modulate angiogenesis; however, the role of the two distinct TNF-α receptors, TNFR1 and TNFR2, in mediating angiogenic signaling after cerebral ischemic stroke is relatively unknown. METHODS C57BL6 mice were subject to 90 min of ischemia by temporary occlusion of the middle cerebral artery (MCAO) and given daily intra-cerebroventricular injections of antibodies against TNFR1, TNFR2 or control IgG (doses of 10, 50, and 100 ng/day) for 4 days following 90 min MCAO. Vascular remodeling and α5β1 and αVβ3 integrin expression were then examined in the brains of these mice after 4, 7, and 14 days post-ischemia. In parallel in vitro studies, flow cytometry was used to determine the influence of TNF-α on proliferation and integrin expression of human brain microvascular endothelial cells (HBMECs). RESULTS The post-ischemic cerebral angiogenic response was inhibited by antibodies against TNFR1 but not TNFR2, and this correlated with reduced endothelial proliferation and decreased α5β1 and αVβ3 integrin expression after 4 and 7 days post-ischemia. Consistent with these findings, in vitro studies showed that TNF-α induced endothelial proliferation and upregulation of α5β1 and αVβ3 integrins was abrogated by anti-TNFR1 but not anti-TNFR2 antibodies in cultured HBMECs. In addition, blocking antibodies to α5β1 and αVβ3 integrins significantly inhibited TNF-α-induced HBMEC proliferation. CONCLUSIONS Our results suggest that TNFR1-mediated signaling plays a critical role in triggering angiogenic integrins and subsequent angiogenic responses following cerebral ischemia. These novel findings could form a platform for future therapeutic strategies aimed at stimulating angiogenesis following cerebral ischemia.
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Affiliation(s)
- Heng Huang
- Department of Neurology, Guangdong Medical University Affiliated Hospital, Zhanjiang, 524001, People's Republic of China
| | - Qijuan Huang
- Department of Neurology, Guangdong Medical University Affiliated Hospital, Zhanjiang, 524001, People's Republic of China
| | - Fuxin Wang
- Department of Neurology, Guangdong Medical University Affiliated Hospital, Zhanjiang, 524001, People's Republic of China
| | - Richard Milner
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA.
| | - Longxuan Li
- Department of Neurology, Gongli Hospital, 219 Miaopu Road, Pudong New Area, Shanghai, 200135, People's Republic of China. .,Department of Neurology, Guangdong Medical University Affiliated Hospital, Zhanjiang, 524001, People's Republic of China.
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12
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Sun WY, Dimasi DP, Pitman MR, Zhuang Y, Heddle R, Pitson SM, Grimbaldeston MA, Bonder CS. Topical Application of Fingolimod Perturbs Cutaneous Inflammation. THE JOURNAL OF IMMUNOLOGY 2016; 196:3854-64. [PMID: 27001955 DOI: 10.4049/jimmunol.1501510] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 02/23/2016] [Indexed: 01/13/2023]
Abstract
The prevalence of allergies, including rhinitis, eczema, and anaphylaxis, is rising dramatically worldwide. This increase is especially problematic in children who bear the greatest burden of this rising trend. Increasing evidence identifies neutrophils as primary perpetrators of the more severe and difficult to manage forms of inflammation. A newly recognized mechanism by which neutrophils are recruited during the early phase of histamine-induced inflammation involves the sphingosine kinase (SK)/sphingosine-1-phosphate axis. This study examines whether topical application of fingolimod, an established SK/sphingosine-1-phosphate antagonist already in clinical use to treat multiple sclerosis, may be repurposed to treat cutaneous inflammation. Using two mouse models of ear skin inflammation (histamine- and IgE-mediated passive cutaneous anaphylaxis) we topically applied fingolimod prophylactically, as well as after establishment of the inflammatory response, and examined ear swelling, SK activity, vascular permeability, leukocyte recruitment, and production of proinflammatory mediators. The present study reveals that when applied topically, fingolimod attenuates both immediate and late-phase responses to histamine with reduced extravasation of fluid, SK-1 activity, proinflammatory cytokine and chemokine production, and neutrophil influx and prevents ear swelling. Intravital microscopy demonstrates that histamine-induced neutrophil rolling and adhesion to the postcapillary venules in the mouse ears is significantly attenuated even after 24 h. More importantly, these effects are achievable even once inflammation is established. Translation into humans was also accomplished with epicutaneous application of fingolimod resolving histamine-induced and allergen-induced inflammatory reactions in forearm skin. Overall, this study demonstrates, to our knowledge for the first time, that fingolimod may be repurposed to treat cutaneous inflammation.
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Affiliation(s)
- Wai Y Sun
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia 5000, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia
| | - David P Dimasi
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia 5000, Australia
| | - Melissa R Pitman
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia 5000, Australia
| | - YiZhong Zhuang
- School of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia
| | - Robert Heddle
- School of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia; Clinical Immunology Unit, Royal Adelaide Hospital, Adelaide, South Australia 5000, Australia; and Discipline of Pediatrics and Child Health, Flinders University, Adelaide, South Australia 5042, Australia
| | - Stuart M Pitson
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia 5000, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia
| | - Michele A Grimbaldeston
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia 5000, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia
| | - Claudine S Bonder
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia 5000, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia 5000, Australia;
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13
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Dengue Virus-Induced Inflammation of the Endothelium and the Potential Roles of Sphingosine Kinase-1 and MicroRNAs. Mediators Inflamm 2015; 2015:509306. [PMID: 26609198 PMCID: PMC4644833 DOI: 10.1155/2015/509306] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 10/02/2015] [Accepted: 10/08/2015] [Indexed: 01/24/2023] Open
Abstract
One of the main pathogenic effects of severe dengue virus (DENV) infection is a vascular leak syndrome. There are no available antivirals or specific DENV treatments and without hospital support severe DENV infection can be life-threatening. The cause of the vascular leakage is permeability changes in the endothelial cells lining the vasculature that are brought about by elevated vasoactive cytokine and chemokines induced following DENV infection. The source of these altered cytokine and chemokines is traditionally believed to be from DENV-infected cells such as monocyte/macrophages and dendritic cells. Herein we discuss the evidence for the endothelium as an additional contributor to inflammatory and innate responses during DENV infection which may affect endothelial cell function, in particular the ability to maintain vascular integrity. Furthermore, we hypothesise roles for two factors, sphingosine kinase-1 and microRNAs (miRNAs), with a focus on several candidate miRNAs, which are known to control normal vascular function and inflammatory responses. Both of these factors may be potential therapeutic targets to regulate inflammation of the endothelium during DENV infection.
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14
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Affiliation(s)
- Claudine S Bonder
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia
| | - Stuart M Pitson
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia
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15
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Parham KA, Zebol JR, Tooley KL, Sun WY, Moldenhauer LM, Cockshell MP, Gliddon BL, Moretti PA, Tigyi G, Pitson SM, Bonder CS. Sphingosine 1-phosphate is a ligand for peroxisome proliferator-activated receptor-γ that regulates neoangiogenesis. FASEB J 2015; 29:3638-53. [PMID: 25985799 DOI: 10.1096/fj.14-261289] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 05/04/2015] [Indexed: 12/21/2022]
Abstract
Sphingosine 1-phosphate (S1P) is a bioactive lipid that can function both extracellularly and intracellularly to mediate a variety of cellular processes. Using lipid affinity matrices and a radiolabeled lipid binding assay, we reveal that S1P directly interacts with the transcription factor peroxisome proliferator-activated receptor (PPAR)γ. Herein, we show that S1P treatment of human endothelial cells (ECs) activated a luciferase-tagged PPARγ-specific gene reporter by ∼12-fold, independent of the S1P receptors. More specifically, in silico docking, gene reporter, and binding assays revealed that His323 of the PPARγ ligand binding domain is important for binding to S1P. PPARγ functions when associated with coregulatory proteins, and herein we identify that peroxisome proliferator-activated receptor-γ coactivator 1 (PGC1)β binds to PPARγ in ECs and their progenitors (nonadherent endothelial forming cells) and that the formation of this PPARγ:PGC1β complex is increased in response to S1P. ECs treated with S1P selectively regulated known PPARγ target genes with PGC1β and plasminogen-activated inhibitor-1 being increased, no change to adipocyte fatty acid binding protein 2 and suppression of CD36. S1P-induced in vitro tube formation was significantly attenuated in the presence of the PPARγ antagonist GW9662, and in vivo application of GW9662 also reduced vascular development in Matrigel plugs. Interestingly, activation of PPARγ by the synthetic ligand troglitazone also reduced tube formation in vitro and in vivo. To support this, Sphk1(-/-)Sphk2(+/-) mice, with low circulating S1P levels, demonstrated a similar reduction in vascular development. Taken together, our data reveal that the transcription factor, PPARγ, is a bona fide intracellular target for S1P and thus suggest that the S1P:PPARγ:PGC1β complex may be a useful target to manipulate neovascularization.
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Affiliation(s)
- Kate A Parham
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Julia R Zebol
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Katie L Tooley
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Wai Y Sun
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Lachlan M Moldenhauer
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Michaelia P Cockshell
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Briony L Gliddon
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Paul A Moretti
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Gabor Tigyi
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Stuart M Pitson
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Claudine S Bonder
- *Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia, Australia; School of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia; and Department of Physiology, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
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16
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Dimasi D, Sun WY, Bonder CS. Neutrophil interactions with the vascular endothelium. Int Immunopharmacol 2013; 17:1167-75. [DOI: 10.1016/j.intimp.2013.05.034] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 05/31/2013] [Indexed: 01/13/2023]
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17
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Molecular cloning, overexpression, and an efficient one-step purification of α5β1 integrin. Protein Expr Purif 2013; 92:21-8. [PMID: 23993979 DOI: 10.1016/j.pep.2013.08.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 08/19/2013] [Accepted: 08/20/2013] [Indexed: 11/23/2022]
Abstract
The α5β1 integrin heterodimer is involved in many cellular processes and is an anti-cancer therapeutic target. Therefore, access to quantities of protein suitable for studies aimed at understanding its biological functions is important. To this end, a large-scale protein expression system, utilizing the recombinant baculovirus/SF9 insect cell expression system, was created to produce the extracellular domain of the α5β1 integrin. An incorporated 8X-histidine tag enabled one-step nickel-column purification. Following sequence confirmation by LC-MS/MS, the conformation of the heterodimer was characterized by native dot blot and negative stain electron microscopy. Cellular transduction inhibition studies confirmed biological activity. The system allows expression and purification of α5β1 integrin in quantities suitable for an array of different experiments including structural biology.
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18
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Snider AJ. Sphingosine kinase and sphingosine-1-phosphate: regulators in autoimmune and inflammatory disease. ACTA ACUST UNITED AC 2013; 8. [PMID: 24416079 DOI: 10.2217/ijr.13.40] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Sphingolipids and their metabolizing enzymes are beginning to be recognized as critical mediators in biological processes, specifically in inflammation and autoimmunity. Sphingosine kinases (SKs) and their lipid product sphingosine-1-phosphate (S1P) play essential roles in inflammatory signaling processes, as well as disease development and progression. SKs can be activated by numerous growth factors and cytokines, including TNF-α and IL-1β, leading to the generation of S1P. S1P exerts its biological effects on intracellular and extracellular targets, such as S1P receptors. In addition to roles in inflammatory signaling pathways SKs, S1P and S1P receptors have been implicated in immune cell function and trafficking, specifically in lymphocytes. This review will discuss the contribution of the bioactive sphingolipid S1P, its generating enzyme SK, and its cell surface receptors in the inflammatory and autoimmune diseases systemic lupus erythematosus, arthritis and inflammatory bowel disease.
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Affiliation(s)
- Ashley J Snider
- Northport Veterans Affairs Medical Center, Northport, NY 11768, USA and Department of Medicine, Stony Brook University, 100 Nicolls Road, Health Sciences Center L15-023, Stony Brook, NY 11794, USA
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19
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Sphingolipids: a potential molecular approach to treat allergic inflammation. J Allergy (Cairo) 2012; 2012:154174. [PMID: 23316248 PMCID: PMC3536436 DOI: 10.1155/2012/154174] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 10/15/2012] [Accepted: 10/30/2012] [Indexed: 01/02/2023] Open
Abstract
Allergic inflammation is an immune response to foreign antigens, which begins within minutes of exposure to the allergen followed by a late phase leading to chronic inflammation. Prolonged allergic inflammation manifests in diseases such as urticaria and rhino-conjunctivitis, as well as chronic asthma and life-threatening anaphylaxis. The prevalence of allergic diseases is profound with 25% of the worldwide population affected and a rising trend across all ages, gender, and racial groups. The identification and avoidance of allergens can manage this disease, but this is not always possible with triggers being common foods, prevalent air-borne particles and only extremely low levels of allergen exposure required for sensitization. Patients who are sensitive to multiple allergens require prophylactic and symptomatic treatments. Current treatments are often suboptimal and associated with adverse effects, such as the interruption of cognition, sleep cycles, and endocrine homeostasis, all of which affect quality of life and are a financial burden to society. Clearly, a better therapeutic approach for allergic diseases is required. Herein, we review the current knowledge of allergic inflammation and discuss the role of sphingolipids as potential targets to regulate inflammatory development in vivo and in humans. We also discuss the benefits and risks of using sphingolipid inhibitors.
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20
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Safuan S, Storr SJ, Patel PM, Martin SG. A comparative study of adhesion of melanoma and breast cancer cells to blood and lymphatic endothelium. Lymphat Res Biol 2012; 10:173-81. [PMID: 23215743 DOI: 10.1089/lrb.2012.0007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Lymphovascular invasion (LVI) is an important step in the metastatic cascade; tumor cell migration and adhesion to blood and lymphatic vessels is followed by invasion through the vessel wall and subsequent systemic spread. Although primary breast cancers and melanomas have rich blood vascular networks, LVI is predominately lymphatic in nature. Whilst the adhesion of tumor cells to blood endothelium has been extensively investigated, there is a paucity of information on tumor cell adhesion to lymphatic endothelium. METHODS AND RESULTS Breast cancer (MDA-MB-231 and MCF7) and melanoma (MeWo and SKMEL-30) cell adhesion to lymphatic (hTERT-LEC and HMVEC dLy Neo) and blood (HUVEC and hMEC-1) endothelial cells were assessed using static adhesion assays. The effect of inflammatory conditions, tumor necrosis factor-α (TNF-α) stimulation of endothelial and tumor cells, on the adhesive process was also examined. In addition, the effects of TNF-α stimulation on tumor cell migration was investigated using haplotaxis (scratch wound) assays. Breast cancer and melanoma cells exhibited higher levels of adhesion to blood compared to lymphatic endothelial cells (p<0.001). TNF-α stimulation of endothelial cells, or of tumor cells alone, did not significantly alter tumor-endothelial cell adhesion or patterns. When both tumor and endothelial cells were stimulated with TNF-α, a significant increase in adhesion was observed (p<0.01), which was notably higher in the lymphatic cell models (p<0.001). TNF-α-stimulation of all tumor cell lines significantly increased their migration rate (p<0.01). CONCLUSIONS Results suggest that metastasis resultant from lymphatic vessel-tumor cell adhesion may be modulated by cytokine stimulation, which could represent an important therapeutic target in breast cancer and melanoma.
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Affiliation(s)
- Sabreena Safuan
- Academic Oncology, School of Molecular Medical Sciences, University of Nottingham , Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
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21
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Appleby SL, Cockshell MP, Pippal JB, Thompson EJ, Barrett JM, Tooley K, Sen S, Sun WY, Grose R, Nicholson I, Levina V, Cooke I, Talbo G, Lopez AF, Bonder CS. Characterization of a distinct population of circulating human non-adherent endothelial forming cells and their recruitment via intercellular adhesion molecule-3. PLoS One 2012; 7:e46996. [PMID: 23144795 PMCID: PMC3492591 DOI: 10.1371/journal.pone.0046996] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 09/11/2012] [Indexed: 01/12/2023] Open
Abstract
Circulating vascular progenitor cells contribute to the pathological vasculogenesis of cancer whilst on the other hand offer much promise in therapeutic revascularization in post-occlusion intervention in cardiovascular disease. However, their characterization has been hampered by the many variables to produce them as well as their described phenotypic and functional heterogeneity. Herein we have isolated, enriched for and then characterized a human umbilical cord blood derived CD133+ population of non-adherent endothelial forming cells (naEFCs) which expressed the hematopoietic progenitor cell markers (CD133, CD34, CD117, CD90 and CD38) together with mature endothelial cell markers (VEGFR2, CD144 and CD31). These cells also expressed low levels of CD45 but did not express the lymphoid markers (CD3, CD4, CD8) or myeloid markers (CD11b and CD14) which distinguishes them from ‘early’ endothelial progenitor cells (EPCs). Functional studies demonstrated that these naEFCs (i) bound Ulex europaeus lectin, (ii) demonstrated acetylated-low density lipoprotein uptake, (iii) increased vascular cell adhesion molecule (VCAM-1) surface expression in response to tumor necrosis factor and (iv) in co-culture with mature endothelial cells increased the number of tubes, tubule branching and loops in a 3-dimensional in vitro matrix. More importantly, naEFCs placed in vivo generated new lumen containing vasculature lined by CD144 expressing human endothelial cells (ECs). Extensive genomic and proteomic analyses of the naEFCs showed that intercellular adhesion molecule (ICAM)-3 is expressed on their cell surface but not on mature endothelial cells. Furthermore, functional analysis demonstrated that ICAM-3 mediated the rolling and adhesive events of the naEFCs under shear stress. We suggest that the distinct population of naEFCs identified and characterized here represents a new valuable therapeutic target to control aberrant vasculogenesis.
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Affiliation(s)
- Sarah L. Appleby
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
| | - Michaelia P. Cockshell
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
| | - Jyotsna B. Pippal
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
| | - Emma J. Thompson
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
| | - Jeffrey M. Barrett
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
| | - Katie Tooley
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
| | - Shaundeep Sen
- School of Medicine, University of Adelaide, Adelaide, Australia
| | - Wai Yan Sun
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
- School of Medicine, University of Adelaide, Adelaide, Australia
| | - Randall Grose
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
- Leukocyte Biology Laboratory, Women's and Children's Health Research Institute, Adelaide, South Australia, Australia
| | - Ian Nicholson
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
- Leukocyte Biology Laboratory, Women's and Children's Health Research Institute, Adelaide, South Australia, Australia
| | - Vitalina Levina
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Ira Cooke
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Gert Talbo
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Angel F. Lopez
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
- School of Medicine, University of Adelaide, Adelaide, Australia
| | - Claudine S. Bonder
- Centre for Cancer Biology, South Australian Pathology, Adelaide, South Australia, Australia
- Co-operative Research Centre for Biomarker Translation, La Trobe University, Melbourne, Victoria, Australia
- School of Medicine, University of Adelaide, Adelaide, Australia
- * E-mail:
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22
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Carr JM, Mahalingam S, Bonder CS, Pitson SM. Sphingosine kinase 1 in viral infections. Rev Med Virol 2012; 23:73-84. [PMID: 22639116 DOI: 10.1002/rmv.1718] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Revised: 03/19/2012] [Accepted: 03/22/2012] [Indexed: 12/24/2022]
Abstract
Sphingosine kinase 1 (SphK1) is an enzyme that phosphorylates the lipid sphingosine to generate sphingosine-1-phosphate (S1P). S1P can act intracellularly as a signaling molecule and extracellularly as a receptor ligand. The SphK1/S1P axis has well-described roles in cell signaling, the cell death/survival decision, the production of a pro-inflammatory response, immunomodulation, and control of vascular integrity. Agents targeting the SphK1/S1P axis are being actively developed as therapeutics for cancer and immunological and inflammatory disorders. Control of cell death/survival and pro-inflammatory immune responses is central to the pathology of infectious disease, and we can capitalize on the knowledge provided by investigations of SphK1/S1P in cancer and immunology to assess its application to selected human infections. We have herein reviewed the growing literature relating viral infections to changes in SphK1 and S1P. SphK1 activity is reportedly increased following human cytomegalovirus and respiratory syncytial virus infections, and elevated SphK1 enhances influenza virus infection. In contrast, SphK1 activity is reduced in bovine viral diarrhea virus and dengue virus infections. Sphingosine analogs that modulate S1P receptors have proven useful in animal models in alleviating influenza virus infection but have shown no benefit in simian human immunodeficiency virus and lymphocytic choriomeningitis virus infections. We have rationalized a role for SphK1/S1P in dengue virus, chikungunya virus, and Ross River virus infections, on the basis of the biology and the pathology of these diseases. The increasing number of effective SphK1 and S1P modulating agents currently in development makes it timely to investigate these roles with the potential for developing modulators of SphK1 and S1P for novel anti-viral therapies.
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Affiliation(s)
- Jillian M Carr
- Microbiology and Infectious Diseases, Flinders Medical Science and Technology, School of Medicine, Flinders University, Adelaide, South Australia, Australia.
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23
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Felcht M, Luck R, Schering A, Seidel P, Srivastava K, Hu J, Bartol A, Kienast Y, Vettel C, Loos EK, Kutschera S, Bartels S, Appak S, Besemfelder E, Terhardt D, Chavakis E, Wieland T, Klein C, Thomas M, Uemura A, Goerdt S, Augustin HG. Angiopoietin-2 differentially regulates angiogenesis through TIE2 and integrin signaling. J Clin Invest 2012; 122:1991-2005. [PMID: 22585576 DOI: 10.1172/jci58832] [Citation(s) in RCA: 339] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 04/04/2012] [Indexed: 12/11/2022] Open
Abstract
Angiopoietin-2 (ANG-2) is a key regulator of angiogenesis that exerts context-dependent effects on ECs. ANG-2 binds the endothelial-specific receptor tyrosine kinase 2 (TIE2) and acts as a negative regulator of ANG-1/TIE2 signaling during angiogenesis, thereby controlling the responsiveness of ECs to exogenous cytokines. Recent data from tumors indicate that under certain conditions ANG-2 can also promote angiogenesis. However, the molecular mechanisms of dual ANG-2 functions are poorly understood. Here, we identify a model for the opposing roles of ANG-2 in angiogenesis. We found that angiogenesis-activated endothelium harbored a subpopulation of TIE2-negative ECs (TIE2lo). TIE2 expression was downregulated in angiogenic ECs, which abundantly expressed several integrins. ANG-2 bound to these integrins in TIE2lo ECs, subsequently inducing, in a TIE2-independent manner, phosphorylation of the integrin adaptor protein FAK, resulting in RAC1 activation, migration, and sprouting angiogenesis. Correspondingly, in vivo ANG-2 blockade interfered with integrin signaling and inhibited FAK phosphorylation and sprouting angiogenesis of TIE2lo ECs. These data establish a contextual model whereby differential TIE2 and integrin expression, binding, and activation control the role of ANG-2 in angiogenesis. The results of this study have immediate translational implications for the therapeutic exploitation of angiopoietin signaling.
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Affiliation(s)
- Moritz Felcht
- Division of Vascular Oncology and Metastasis, German Cancer Research Center Heidelberg (DKFZ-ZMBH Alliance), Heidelberg, Germany
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24
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Erkol A, Oduncu V, Pala S, Kızılırmak F, Kılıcgedik A, Yılmaz F, Güler A, Karabay CY, Kırma C. Plasma osteoprotegerin level on admission is associated with no-reflow phenomenon after primary angioplasty and subsequent left ventricular remodeling in patients with acute ST-segment elevation myocardial infarction. Atherosclerosis 2012; 221:254-9. [DOI: 10.1016/j.atherosclerosis.2011.12.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 12/17/2011] [Accepted: 12/19/2011] [Indexed: 12/17/2022]
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25
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Sun WY, Abeynaike LD, Escarbe S, Smith CD, Pitson SM, Hickey MJ, Bonder CS. Rapid histamine-induced neutrophil recruitment is sphingosine kinase-1 dependent. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 180:1740-50. [PMID: 22322303 DOI: 10.1016/j.ajpath.2011.12.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 11/09/2011] [Accepted: 12/16/2011] [Indexed: 10/14/2022]
Abstract
Leukocyte recruitment to sites of inflammation is critical for the development of acute allergic responses. Rapid P-selectin up-regulation by endothelial cells is a key promoter of leukocyte infiltration in response to mediators such as histamine. However, the mechanisms underpinning this process are still incompletely understood. We examined the role of the sphingosine kinase/sphingosine-1-phosphate (SK/S1P) pathway and showed that in human umbilical vein endothelial cells, histamine rapidly activates SK in an extracellular signal-regulated kinase (ERK) 1/2-dependent manner, concurrent with the induction of P-selectin expression. Histamine activated both SK-1 and SK-2 isoforms; inhibition of SK-1, but not SK-2, attenuated histamine-induced P-selectin up-regulation and neutrophil rolling in vitro. S1P receptor antagonists failed to prevent histamine-induced P-selectin expression, and exogenous S1P did not increase P-selectin expression, suggesting that S1P cell surface receptors are not involved in this process. Finally, the role of both SK-1 and SK-2 in histamine-induced leukocyte rolling in vivo was assessed using pharmacological and genetic methods. Consistent with the in vitro findings, mice pretreated with either sphingosine kinase inhibitor or fingolimod (FTY720) significantly attenuated histamine-induced leukocyte rolling in the cremaster muscle. Similarly, Sphk1(-/-) but not Sphk2(-/-) mice exhibited reduced histamine-induced leukocyte rolling. These findings demonstrate a key role for SK-1 in histamine-induced rapid P-selectin up-regulation and associated leukocyte rolling, and suggest that endothelial SK-1 is an important contributor to allergic inflammation.
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Affiliation(s)
- Wai Y Sun
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia
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Barrett JM, Parham KA, Pippal JB, Cockshell MP, Moretti PAB, Brice SL, Pitson SM, Bonder CS. Over-expression of sphingosine kinase-1 enhances a progenitor phenotype in human endothelial cells. Microcirculation 2012; 18:583-97. [PMID: 21672077 DOI: 10.1111/j.1549-8719.2011.00119.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVES The use of endothelial progenitor cells in vascular therapies has been limited due to their low numbers present in the bone marrow and peripheral blood. The aim of this study was to investigate the effect of sphingosine kinase on the de-differentiation of mature human endothelial cells toward a progenitor phenotype. METHODS The lipid enzyme sphingosine kinase-1 was lentivirally over-expressed in human umbilical vein endothelial cells and cells were analyzed for progenitor phenotype and function. RESULTS Sphingosine kinase-1 mRNA expression was induced approximately 150-fold with a resultant 20-fold increase in sphingosine kinase-1 enzymatic activity. The mRNA expression of the progenitor cell markers CD34, CD133, and CD117 and transcription factor NANOG increased, while the endothelial cell markers analyzed were largely unchanged. The protein level of mature endothelial cell surface markers CD31, CD144, and von Willebrand factor significantly decreased compared to controls. In addition, functional assays provided further evidence for a de-differentiated phenotype with increased viability, reduced uptake of acetylated low-density lipoprotein and decreased tube formation in Matrigel in the cells over-expressing sphingosine kinase-1. CONCLUSIONS These findings suggest that over-expression of sphingosine kinase-1 in human endothelial cells promotes, in part, their de-differentiation to a progenitor cell phenotype, and is thus a potential tool for the generation of a large population of vascular progenitor cells for therapeutic use.
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Affiliation(s)
- Jeffrey M Barrett
- Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, SA, Australia
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Ghosh K, Kanapathipillai M, Korin N, McCarthy JR, Ingber DE. Polymeric nanomaterials for islet targeting and immunotherapeutic delivery. NANO LETTERS 2012; 12:203-8. [PMID: 22196766 PMCID: PMC3280082 DOI: 10.1021/nl203334c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Here we report a proof-of-concept for development of pancreatic islet-targeting nanoparticles for immunomodulatory therapy of autoimmune type 1 diabetes. Modified with a unique islet-homing peptide, these polymeric nanomaterials exhibit 3-fold greater binding to islet endothelial cells and a 200-fold greater anti-inflammatory effect through targeted islet endothelial cell delivery of an immunosuppressant drug. Our findings also underscore the need to carefully tailor drug loading and nanoparticle dosage to achieve maximal vascular targeting and immunosuppression.
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Affiliation(s)
- Kaustabh Ghosh
- Vascular Biology Program, Departments of Pathology & Surgery, Children’s Hospital and Harvard Medical School, Boston, MA, USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
| | | | - Netanel Korin
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
| | - Jason R. McCarthy
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Donald E. Ingber
- Vascular Biology Program, Departments of Pathology & Surgery, Children’s Hospital and Harvard Medical School, Boston, MA, USA
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
- To whom correspondence should be sent ()
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The Sphingosine-1 Phosphate receptor agonist FTY720 dose dependently affected endothelial integrity in vitro and aggravated ventilator-induced lung injury in mice. Pulm Pharmacol Ther 2011; 24:377-85. [DOI: 10.1016/j.pupt.2011.01.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Revised: 12/05/2010] [Accepted: 01/24/2011] [Indexed: 11/22/2022]
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Hou CH, Yang RS, Hou SM, Tang CH. TNF-α increases αvβ3 integrin expression and migration in human chondrosarcoma cells. J Cell Physiol 2011; 226:792-9. [PMID: 20857483 DOI: 10.1002/jcp.22401] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Chondrosarcoma is a type of highly malignant tumour with a potent capacity to invade locally and cause distant metastasis. Chondrosarcoma shows a predilection for metastasis to the lungs. Tumour necrosis factor (TNF)-α is a key cytokine involved in inflammation, immunity, cellular homeostasis and tumour progression. Integrins are the major adhesive molecules in mammalian cells and have been associated with metastasis of cancer cells. However, the effects of TNF-α in migration and integrin expression in chondrosarcoma cells are largely unknown. In this study, we found that TNF-α increased the migration and the expression of αvβ3 integrin in human chondrosarcoma cells. Activations of MAPK kinase (MEK), extracellular signal-regulating kinase (ERK) and nuclear factor-κB (NF-κB) pathways after TNF-α treatment were demonstrated, and TNF-α-induced expression of integrin and migration activity was inhibited by the specific inhibitor and mutant of MEK, ERK and NF-κB cascades. Taken together, our results indicated that TNF-α enhances the migration of chondrosarcoma cells by increasing αvβ3 integrin expression through the MEK/ERK/NF-κB signal transduction pathway.
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Affiliation(s)
- Chun-Han Hou
- Department of Orthopedic Surgery, National Taiwan University Hospital, and Institute of Biomedical Engineering, College of Medicine, National Taiwan University, Taipei, Taiwan
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Abstract
SummaryAgeing is associated with multiple changes in many different components of the immune system. A healthy immune system exists in a state of balance between efficient effector responses against pathogens and tolerance to self antigens. This balance is changed with age; functions such as antigen recognition, phagocytosis, antigen presentation, chemotaxis, cytokine secretion and killing ability are all compromised. Aberrant cellular responses lead to an altered cytokine network with increases in inflammatory cytokines and decreases in anti-inflammatory cytokines leading to a pro-inflammatory state. Consequently older patients require extra care in diagnosis of infections as symptoms may be perturbed, resulting in unusual presentations of common conditions. The defects in immunity due to immunosenescence also mean that older patients require more care and screening than other patients in the same disease cohort. Though it is generally understood by clinicians that older patients are more at risk from multiple infections, the wider clinical effects of immunosenescence are less understood. The immune system is involved in several neurodegenerative conditions and the inflammatory conditions of immunosenescence may be a key factor in pathogenesis. Similarly, there is reason to believe that immunosenescence might be a key factor explaining the increased incidence of cancer in older age. With increasing understanding of the immune system's involvement in many of these pathological processes, and the contribution that immunosenescence makes to these, more efficient vaccines and novel therapies may be developed to prevent/treat these conditions.
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