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Ibrahim AA, Fujimura T, Uno T, Terada T, Hirano KI, Hosokawa H, Ohta A, Miyata T, Ando K, Yahata T. Plasminogen activator inhibitor-1 promotes immune evasion in tumors by facilitating the expression of programmed cell death-ligand 1. Front Immunol 2024; 15:1365894. [PMID: 38779680 PMCID: PMC11109370 DOI: 10.3389/fimmu.2024.1365894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/23/2024] [Indexed: 05/25/2024] Open
Abstract
Background Increased levels of plasminogen activator inhibitor-1 (PAI-1) in tumors have been found to correlate with poor clinical outcomes in patients with cancer. Although abundant data support the involvement of PAI-1 in cancer progression, whether PAI-1 contributes to tumor immune surveillance remains unclear. The purposes of this study are to determine whether PAI-1 regulates the expression of immune checkpoint molecules to suppresses the immune response to cancer and demonstrate the potential of PAI-1 inhibition for cancer therapy. Methods The effects of PAI-1 on the expression of the immune checkpoint molecule programmed cell death ligand 1 (PD-L1) were investigated in several human and murine tumor cell lines. In addition, we generated tumor-bearing mice and evaluated the effects of a PAI-1 inhibitor on tumor progression or on the tumor infiltration of cells involved in tumor immunity either alone or in combination with immune checkpoint inhibitors. Results PAI-1 induces PD-L1 expression through the JAK/STAT signaling pathway in several types of tumor cells and surrounding cells. Blockade of PAI-1 impedes PD-L1 induction in tumor cells, significantly reducing the abundance of immunosuppressive cells at the tumor site and increasing cytotoxic T-cell infiltration, ultimately leading to tumor regression. The anti-tumor effect elicited by the PAI-1 inhibitor is abolished in immunodeficient mice, suggesting that PAI-1 blockade induces tumor regression by stimulating the immune system. Moreover, combining a PAI-1 inhibitor with an immune checkpoint inhibitor significantly increases tumor regression. Conclusions PAI-1 protects tumors from immune surveillance by increasing PD-L1 expression; hence, therapeutic PAI-1 blockade may prove valuable in treating malignant tumors.
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Affiliation(s)
- Abd Aziz Ibrahim
- Translational Molecular Therapeutics Laboratory, Division of Host Defense Mechanism, Tokai University School of Medicine, Kanagawa, Japan
| | - Taku Fujimura
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tomoko Uno
- Department of Hematology and Oncology, Tokai University School of Medicine, Kanagawa, Japan
| | - Tomoya Terada
- Translational Molecular Therapeutics Laboratory, Division of Host Defense Mechanism, Tokai University School of Medicine, Kanagawa, Japan
| | - Ken-ichi Hirano
- Department of Immunology, Tokai University School of Medicine, Kanagawa, Japan
| | - Hiroyuki Hosokawa
- Department of Immunology, Tokai University School of Medicine, Kanagawa, Japan
| | - Akio Ohta
- Department of Immunology, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe, Japan
| | - Toshio Miyata
- Department of Molecular Medicine and Therapy, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Kiyoshi Ando
- Department of Hematology and Oncology, Tokai University School of Medicine, Kanagawa, Japan
| | - Takashi Yahata
- Translational Molecular Therapeutics Laboratory, Division of Host Defense Mechanism, Tokai University School of Medicine, Kanagawa, Japan
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2
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Pesce NA, Plastino F, Reyes-Goya C, Bernd J, Pavone V, Dal Monte M, Kvanta A, Locri F, André H. Mitigation of human iris angiogenesis through uPAR/LRP-1 interaction antagonism in an organotypic ex vivo model. FASEB J 2024; 38:e23533. [PMID: 38451430 DOI: 10.1096/fj.202301892rr] [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: 09/15/2023] [Revised: 02/05/2024] [Accepted: 02/19/2024] [Indexed: 03/08/2024]
Abstract
Rubeosis Iridis (RI) is characterized by an increase in neovascularization and inflammation factors in the iris. During angiogenesis, the urokinase plasminogen activator (uPA) and its receptor (uPAR) play a pivotal role in extracellular matrix remodeling, where uPAR regulates endothelial cell migration and proliferation through assembly with transmembrane receptors. Here, in the context of hypoxia-induced angiogenesis, the uPA/uPAR system blockage was investigated by using UPARANT in a novel ex vivo human iris organotypic angiogenesis assay. The effects of uPA/uPAR system antagonism in the humanized model of ocular pathologic angiogenesis were analyzed by sprouting angiogenesis and protein assays (western, dot blots, and co-immunoprecipitation) and correlated to vascular endothelial growth factor (VEGF) inhibition. Phosphoprotein and co-immunoprecipitation assay illustrated an unidentified antagonism of UPARANT in the interaction of uPAR with the low-density lipoprotein receptor-related protein-1 (LRP-1), resulting in inhibition of β-catenin-mediated angiogenesis in this model. The effects of uPA/uPAR system inhibition were focal to endothelial cells ex vivo. Comparison between human iris endothelial cells and human retinal endothelial revealed an endothelial-specific mechanism of β-catenin-mediated angiogenesis inhibited by uPA/uPAR system blockage and not by VEGF inhibition. Collectively, these findings broaden the understanding of the effects of the uPA/uPAR system antagonism in the context of angiogenesis, revealing non-canonical β-catenin downstream effects mediated by LRP-1/uPAR interaction.
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Affiliation(s)
- Noemi Anna Pesce
- Division of Eye and Vision, Department of Clinical Neuroscience, St Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
- Department of Biology, University of Pisa, Pisa, Italy
| | - Flavia Plastino
- Division of Eye and Vision, Department of Clinical Neuroscience, St Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
| | | | - Jonathan Bernd
- Division of Eye and Vision, Department of Clinical Neuroscience, St Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Vincenzo Pavone
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
| | | | - Anders Kvanta
- Division of Eye and Vision, Department of Clinical Neuroscience, St Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Filippo Locri
- Division of Eye and Vision, Department of Clinical Neuroscience, St Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Helder André
- Division of Eye and Vision, Department of Clinical Neuroscience, St Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
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3
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Garcia V, Park EJ, Siragusa M, Frohlich F, Mahfuzul Haque M, Pascale JV, Heberlein KR, Isakson BE, Stuehr DJ, Sessa WC. Unbiased proteomics identifies plasminogen activator inhibitor-1 as a negative regulator of endothelial nitric oxide synthase. Proc Natl Acad Sci U S A 2020; 117:9497-9507. [PMID: 32300005 PMCID: PMC7196906 DOI: 10.1073/pnas.1918761117] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Nitric oxide (NO) produced by endothelial nitric oxide synthase (eNOS) is a critical mediator of vascular function. eNOS is tightly regulated at various levels, including transcription, co- and posttranslational modifications, and by various protein-protein interactions. Using stable isotope labeling with amino acids in cell culture (SILAC) and mass spectrometry (MS), we identified several eNOS interactors, including the protein plasminogen activator inhibitor-1 (PAI-1). In cultured human umbilical vein endothelial cells (HUVECs), PAI-1 and eNOS colocalize and proximity ligation assays demonstrate a protein-protein interaction between PAI-1 and eNOS. Knockdown of PAI-1 or eNOS eliminates the proximity ligation assay (PLA) signal in endothelial cells. Overexpression of eNOS and HA-tagged PAI-1 in COS7 cells confirmed the colocalization observations in HUVECs. Furthermore, the source of intracellular PAI-1 interacting with eNOS was shown to be endocytosis derived. The interaction between PAI-1 and eNOS is a direct interaction as supported in experiments with purified proteins. Moreover, PAI-1 directly inhibits eNOS activity, reducing NO synthesis, and the knockdown or antagonism of PAI-1 increases NO bioavailability. Taken together, these findings place PAI-1 as a negative regulator of eNOS and disruptions in eNOS-PAI-1 binding promote increases in NO production and enhance vasodilation in vivo.
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Affiliation(s)
- Victor Garcia
- Vascular Biology and Therapeutics Program, Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520
| | - Eon Joo Park
- Vascular Biology and Therapeutics Program, Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520
| | - Mauro Siragusa
- Institute for Vascular Signaling, Centre for Molecular Medicine, Goethe University, 60596 Frankfurt am Main, Germany
| | - Florian Frohlich
- Vascular Biology and Therapeutics Program, Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520
- Department of Biology/Chemistry, Molecular Membrane Biology Section, University of Osnabrück, 49076 Osnabrück, Germany
| | - Mohammad Mahfuzul Haque
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
| | - Jonathan V Pascale
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595
| | - Katherine R Heberlein
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA 22908
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA 22908
| | - Dennis J Stuehr
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
| | - William C Sessa
- Vascular Biology and Therapeutics Program, Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520;
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4
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Identification of SERPINE1 as a Regulator of Glioblastoma Cell Dispersal with Transcriptome Profiling. Cancers (Basel) 2019; 11:cancers11111651. [PMID: 31731490 PMCID: PMC6896086 DOI: 10.3390/cancers11111651] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/18/2019] [Accepted: 10/21/2019] [Indexed: 12/23/2022] Open
Abstract
High mortality rates of glioblastoma (GBM) patients are partly attributed to the invasive behavior of tumor cells that exhibit extensive infiltration into adjacent brain tissue, leading to rapid, inevitable, and therapy-resistant recurrence. In this study, we analyzed transcriptome of motile (dispersive) and non-motile (core) GBM cells using an in vitro spheroid dispersal model and identified SERPINE1 as a modulator of GBM cell dispersal. Genetic or pharmacological inhibition of SERPINE1 reduced spheroid dispersal and cell adhesion by regulating cell-substrate adhesion. We examined TGFβ as a potential upstream regulator of SERPINE1 expression. We also assessed the significance of SERPINE1 in GBM growth and invasion using TCGA glioma datasets and a patient-derived orthotopic GBM model. SERPINE1 expression was associated with poor prognosis and mesenchymal GBM in patients. SERPINE1 knock-down in primary GBM cells suppressed tumor growth and invasiveness in the brain. Together, our results indicate that SERPINE1 is a key player in GBM dispersal and provide insights for future anti-invasive therapy design.
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5
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Valenzuela CA, Quintanilla R, Olate-Briones A, Venturini W, Mancilla D, Cayo A, Moore-Carrasco R, Brown NE. SASP-Dependent Interactions between Senescent Cells and Platelets Modulate Migration and Invasion of Cancer Cells. Int J Mol Sci 2019; 20:ijms20215292. [PMID: 31653055 PMCID: PMC6862446 DOI: 10.3390/ijms20215292] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/17/2019] [Accepted: 10/22/2019] [Indexed: 12/19/2022] Open
Abstract
Alterations in platelet aggregation are common in aging individuals and in the context of age-related pathologies such as cancer. So far, however, the effects of senescent cells on platelets have not been explored. In addition to serving as a barrier to tumor progression, cellular senescence can contribute to remodeling tissue microenvironments through the capacity of senescent cells to synthesize and secrete a plethora of bioactive factors, a feature referred to as the senescence-associated secretory phenotype (SASP). As senescent cells accumulate in aging tissues, sites of tissue injury, or in response to drugs, SASP factors may contribute to increase platelet activity and, through this mechanism, generate a microenvironment that facilitates cancer progression. Using in vitro models of drug-induced senescence, in which cellular senescence was induced following exposure of mammary epithelial cells (MCF-10A and MCF-7) and gastric cancer cells (AGS) to the CDK4/6 inhibitor Palbociclib, we show that senescent mammary and gastric cells display unique expression profiles of selected SASP factors, most of them being downregulated at the RNA level in senescent AGS cells. In addition, we observed cell-type specific differences in the levels of secreted factors, including IL-1β, in media conditioned by senescent cells. Interestingly, only media conditioned by senescent MCF-10A and MCF-7 cells were able to enhance platelet aggregation, although all three types of senescent cells were able to attract platelets in vitro. Nevertheless, the effects of factors secreted by senescent cells and platelets on the migration and invasion of non-senescent cells are complex. Overall, platelets have prominent effects on migration, while factors secreted by senescent cells tend to promote invasion. These differential responses likely reflect differences in the specific arrays of secreted senescence-associated factors, specific factors released by platelets upon activation, and the susceptibility of target cells to respond to these agents.
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Affiliation(s)
- Claudio A Valenzuela
- Center for Medical Research, Medical School, University of Talca, Talca 3460000, Chile.
- Núcleo Científico Multidisciplinario, Universidad de Talca, Talca 3460000, Chile.
| | - Ricardo Quintanilla
- Center for Medical Research, Medical School, University of Talca, Talca 3460000, Chile.
- Faculty of Health Sciences, University of Talca, Talca 3460000, Chile.
| | | | - Whitney Venturini
- Center for Medical Research, Medical School, University of Talca, Talca 3460000, Chile.
- Faculty of Health Sciences, University of Talca, Talca 3460000, Chile.
| | - Daniel Mancilla
- Center for Medical Research, Medical School, University of Talca, Talca 3460000, Chile.
| | - Angel Cayo
- Center for Medical Research, Medical School, University of Talca, Talca 3460000, Chile.
- Faculty of Health Sciences, University of Talca, Talca 3460000, Chile.
| | - Rodrigo Moore-Carrasco
- Faculty of Health Sciences, University of Talca, Talca 3460000, Chile.
- Programa de Investigación Asociativa en Cáncer Gástrico (PIA-CG), Talca 3460000, Chile.
| | - Nelson E Brown
- Center for Medical Research, Medical School, University of Talca, Talca 3460000, Chile.
- Programa de Investigación Asociativa en Cáncer Gástrico (PIA-CG), Talca 3460000, Chile.
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6
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Wang HC, Lin YL, Hsu CC, Chao YJ, Hou YC, Chiu TJ, Huang PH, Tang MJ, Chen LT, Shan YS. Pancreatic stellate cells activated by mutant KRAS-mediated PAI-1 upregulation foster pancreatic cancer progression via IL-8. Theranostics 2019; 9:7168-7183. [PMID: 31695760 PMCID: PMC6831292 DOI: 10.7150/thno.36830] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 09/02/2019] [Indexed: 12/15/2022] Open
Abstract
Background: The dense fibrotic stroma enveloping pancreatic tumors is a major cause of drug resistance. Pancreatic stellate cells (PSCs) in the stroma can be activated to induce intra-tumor fibrosis and worsen patient survival; however, the molecular basics for the regulation of PSC activation remains unclear. Methods: The in vitro coculture system was used to study cancer cell-PSC interactions. Atomic force microscopy was used to measure the stiffness of tumor tissues and coculture gels. Cytokine arrays, qPCR, and Western blotting were performed to identify the potential factors involved in PSC activation and to elucidate underlying pathways. Results: PSC activation characterized by α-SMA expression was associated with increased pancreatic tumor stiffness and poor prognosis. Coculture with cancer cells induced PSC activation, which increased organotypic coculture gel stiffness and cancer cell invasion. Cancer cells-derived PAI-1 identified from coculture medium could activate PSCs, consistent with pancreatic cancer tissue microarray analysis showing a strong positive correlation between PAI-1 and α-SMA expression. Suppression by knocking down PAI-1 in cancer cells demonstrated the requirement of PAI-1 for coculture-induced PSC activation and gel stiffness. PAI-1 could be upregulated by KRAS in pancreatic cancer cells through ERK. In PSCs, inhibition of LRP-1, ERK, and c-JUN neutralized the effect of PAI-1, suggesting the contribution of LRP-1/ERK/c-JUN signaling. Furthermore, activated PSCs might exacerbate malignant behavior of cancer cells via IL-8 because suppression of IL-8 signaling reduced pancreatic tumor growth and fibrosis in vivo. Conclusions: KRAS-mutant pancreatic cancer cells can activate PSCs through PAI-1/LRP-1 signaling to promote fibrosis and cancer progression.
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7
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Ramaswamy AK, Vorp DA, Weinbaum JS. Functional Vascular Tissue Engineering Inspired by Matricellular Proteins. Front Cardiovasc Med 2019; 6:74. [PMID: 31214600 PMCID: PMC6554335 DOI: 10.3389/fcvm.2019.00074] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 05/15/2019] [Indexed: 12/17/2022] Open
Abstract
Modern regenerative medicine, and tissue engineering specifically, has benefited from a greater appreciation of the native extracellular matrix (ECM). Fibronectin, collagen, and elastin have entered the tissue engineer's toolkit; however, as fully decellularized biomaterials have come to the forefront in vascular engineering it has become apparent that the ECM is comprised of more than just fibronectin, collagen, and elastin, and that cell-instructive molecules known as matricellular proteins are critical for desired outcomes. In brief, matricellular proteins are ECM constituents that contrast with the canonical structural proteins of the ECM in that their primary role is to interact with the cell. Of late, matricellular genes have been linked to diseases including connective tissue disorders, cardiovascular disease, and cancer. Despite the range of biological activities, this class of biomolecules has not been actively used in the field of regenerative medicine. The intent of this review is to bring matricellular proteins into wider use in the context of vascular tissue engineering. Matricellular proteins orchestrate the formation of new collagen and elastin fibers that have proper mechanical properties-these will be essential components for a fully biological small diameter tissue engineered vascular graft (TEVG). Matricellular proteins also regulate the initiation of thrombosis via fibrin deposition and platelet activation, and the clearance of thrombus when it is no longer needed-proper regulation of thrombosis will be critical for maintaining patency of a TEVG after implantation. Matricellular proteins regulate the adhesion, migration, and proliferation of endothelial cells-all are biological functions that will be critical for formation of a thrombus-resistant endothelium within a TEVG. Lastly, matricellular proteins regulate the adhesion, migration, proliferation, and activation of smooth muscle cells-proper control of these biological activities will be critical for a TEVG that recellularizes and resists neointimal formation/stenosis. We review all of these functions for matricellular proteins here, in addition to reviewing the few studies that have been performed at the intersection of matricellular protein biology and vascular tissue engineering.
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Affiliation(s)
- Aneesh K Ramaswamy
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - David A Vorp
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Surgery, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, United States
| | - Justin S Weinbaum
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Pathology, University of Pittsburgh, Pittsburgh, PA, United States
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8
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Furlan F, Eden G, Archinti M, Arnaudova R, Andreotti G, Citro V, Cubellis MV, Motta A, Degryse B. Data on the inhibition of cell proliferation and invasion by the D2A-Ala peptide derived from the urokinase receptor. Data Brief 2019; 22:903-908. [PMID: 30723759 PMCID: PMC6352295 DOI: 10.1016/j.dib.2019.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/04/2019] [Accepted: 01/04/2019] [Indexed: 11/28/2022] Open
Abstract
The data presented in this article are connected to our research article entitled “D2A-Ala peptide derived from the urokinase receptor exerts anti-tumoural effects in vitro and in vivo” (Furlan et al., 2018). These data further extend our understanding of the inhibitory effects of D2A-Ala peptide. Dose-response curve using a wide range of concentrations of D2A-Ala shows that this peptide has no effects per se on proliferation of rat smooth muscle cells (RSMC). However, D2A-Ala dose-dependently inhibits epidermal growth factor (EGF)-induced RSMC proliferation. Kinetics lasting up to seven days revealed that D2A-Ala peptide completely blocked EGF-promoted RSMC proliferation. Moreover, D2A-Ala peptide inhibited invasion of HT 1080 cells towards RSMC.
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Affiliation(s)
- Federico Furlan
- Dept. of Molecular Biology and Functional Genomics, DIBIT, Università Vita-Salute San Raffaele, Via Olgettina 58, 20132 Milan, Italy
| | - Gabriele Eden
- IFOM, FIRC Institute of Molecular Oncology, Via Adamello 16, 20139 Milan, Italy
| | - Marco Archinti
- Dept. of Molecular Biology and Functional Genomics, DIBIT, Università Vita-Salute San Raffaele, Via Olgettina 58, 20132 Milan, Italy
| | - Ralitsa Arnaudova
- Dept. of Molecular Biology and Functional Genomics, DIBIT, Università Vita-Salute San Raffaele, Via Olgettina 58, 20132 Milan, Italy
| | - Giuseppina Andreotti
- Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy
| | - Valentina Citro
- Dipartimento di Biologia, Università Federico II, Naples, Italy
| | | | - Andrea Motta
- Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy
| | - Bernard Degryse
- Dept. of Molecular Biology and Functional Genomics, DIBIT, Università Vita-Salute San Raffaele, Via Olgettina 58, 20132 Milan, Italy
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9
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Luo M, Ji Y, Luo Y, Li R, Fay WP, Wu J. Plasminogen activator inhibitor-1 regulates the vascular expression of vitronectin. J Thromb Haemost 2017; 15:2451-2460. [PMID: 29028290 PMCID: PMC5716874 DOI: 10.1111/jth.13869] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Indexed: 11/30/2022]
Abstract
Essentials Vitronectin (VN) is produced by smooth muscle cells (SMCs) and promotes neointima formation. We studied the regulation of vascular VN expression by plasminogen activator inhibitor-1 (PAI-1). PAI-1 stimulates VN gene expression in SMCs by binding LDL receptor-related protein 1. Stimulation of VN gene expression may be a mechanism by which PAI-1 controls vascular remodeling. SUMMARY Background Increased expression of vitronectin (VN) by smooth muscle cells (SMCs) promotes neointima formation after vascular injury, and may contribute to chronic vascular diseases, such as atherosclerosis. However, the molecular regulation of vascular VN expression is poorly defined. Given the overlapping expression profiles and functions of VN and plasminogen activator inhibitor (PAI)-1, we hypothesized that PAI-1 regulates vascular VN expression. Objectives To determine whether PAI-1 regulates VN expression in SMCs and in vivo. Methods The effects of genetic alterations in PAI-1 expression, pharmacologic PAI-1 inhibition and recombinant PAI-1 on SMC VN expression were studied, and vascular VN expression in wild-type (WT) and PAI-1-deficient mice was assessed. Results VN expression was significantly lower in PAI-1-deficient SMCs and significantly increased in PAI-1-overexpressing SMCs. PAI-1 small interfering RNA and pharmacologic PAI-1 inhibition significantly decreased SMC VN expression. Recombinant PAI-1 stimulated VN expression by binding LDL receptor-related protein-1 (LRP1), but another LRP1 ligand, α2 -macroglobulin, did not. As compared with WT controls, carotid artery VN expression was significantly lower in PAI-1-deficient mice and significantly higher in PAI-1-transgenic mice. In a vein graft (VG) model of intimal hyperplasia, VN expression was significantly attenuated in PAI-1-deficient VGs as compared with WT controls. The plasma VN concentration was significantly decreased in PAI-1-deficient mice versus WT controls at 4 weeks, but not at 5 days or 8 weeks, after surgery. Conclusions PAI-1 stimulates SMC VN expression by binding LRP1, and controls vascular VN expression in vivo. Autocrine regulation of vascular VN expression by PAI-1 may play important roles in vascular homeostasis and pathologic vascular remodeling.
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MESH Headings
- Animals
- Cells, Cultured
- Gene Expression Regulation
- Humans
- Low Density Lipoprotein Receptor-Related Protein-1
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/metabolism
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/metabolism
- Neointima/etiology
- Neointima/genetics
- Neointima/metabolism
- RNA, Small Interfering/genetics
- Receptors, LDL/metabolism
- Recombinant Proteins/genetics
- Recombinant Proteins/metabolism
- Serpin E2/deficiency
- Serpin E2/genetics
- Serpin E2/metabolism
- Tumor Suppressor Proteins/metabolism
- Vascular Remodeling
- Vitronectin/deficiency
- Vitronectin/genetics
- Vitronectin/metabolism
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Affiliation(s)
- M Luo
- Drug Discovery Research Center, Southwest Medical University, Luzhou, Sichuan, China
- Laboratory for Cardiovascular Pharmacology of the Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Y Ji
- Department of Medicine, University of Missouri School of Medicine, Columbia, MO, USA
| | - Y Luo
- Drug Discovery Research Center, Southwest Medical University, Luzhou, Sichuan, China
| | - R Li
- Drug Discovery Research Center, Southwest Medical University, Luzhou, Sichuan, China
| | - W P Fay
- Department of Medicine, University of Missouri School of Medicine, Columbia, MO, USA
- Department of Medical Pharmacology & Physiology, University of Missouri School of Medicine, Columbia, MO, USA
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO, USA
| | - J Wu
- Drug Discovery Research Center, Southwest Medical University, Luzhou, Sichuan, China
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10
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Inhibitory serpins. New insights into their folding, polymerization, regulation and clearance. Biochem J 2017; 473:2273-93. [PMID: 27470592 DOI: 10.1042/bcj20160014] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/31/2016] [Indexed: 12/20/2022]
Abstract
Serpins are a widely distributed family of high molecular mass protein proteinase inhibitors that can inhibit both serine and cysteine proteinases by a remarkable mechanism-based kinetic trapping of an acyl or thioacyl enzyme intermediate that involves massive conformational transformation. The trapping is based on distortion of the proteinase in the complex, with energy derived from the unique metastability of the active serpin. Serpins are the favoured inhibitors for regulation of proteinases in complex proteolytic cascades, such as are involved in blood coagulation, fibrinolysis and complement activation, by virtue of the ability to modulate their specificity and reactivity. Given their prominence as inhibitors, much work has been carried out to understand not only the mechanism of inhibition, but how it is fine-tuned, both spatially and temporally. The metastability of the active state raises the question of how serpins fold, whereas the misfolding of some serpin variants that leads to polymerization and pathologies of liver disease, emphysema and dementia makes it clinically important to understand how such polymerization might occur. Finally, since binding of serpins and their proteinase complexes, particularly plasminogen activator inhibitor-1 (PAI-1), to the clearance and signalling receptor LRP1 (low density lipoprotein receptor-related protein 1), may affect pathways linked to cell migration, angiogenesis, and tumour progression, it is important to understand the nature and specificity of binding. The current state of understanding of these areas is addressed here.
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Ji Y, Weng Z, Fish P, Goyal N, Luo M, Myears SP, Strawn TL, Chandrasekar B, Wu J, Fay WP. Pharmacological Targeting of Plasminogen Activator Inhibitor-1 Decreases Vascular Smooth Muscle Cell Migration and Neointima Formation. Arterioscler Thromb Vasc Biol 2016; 36:2167-2175. [PMID: 27659097 DOI: 10.1161/atvbaha.116.308344] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 09/09/2016] [Indexed: 01/23/2023]
Abstract
OBJECTIVE Plasminogen activator inhibitor-1 (PAI-1), a serine protease inhibitor that promotes and inhibits cell migration, plays a complex and important role in adverse vascular remodeling. Little is known about the effects of pharmacological PAI-1 inhibitors, an emerging drug class, on migration of vascular smooth muscle cells (SMCs) and endothelial cells (ECs), crucial mediators of vascular remodeling. We investigated the effects of PAI-039 (tiplaxtinin), a specific PAI-1 inhibitor, on SMC and EC migration in vitro and vascular remodeling in vivo. APPROACH AND RESULTS PAI-039 inhibited SMC migration through collagen gels, including those supplemented with vitronectin and other extracellular matrix proteins, but did not inhibit migration of PAI-1-deficient SMCs, suggesting that its antimigratory effects were PAI-1-specific and physiologically relevant. However, PAI-039 did not inhibit EC migration. PAI-039 inhibited phosphorylation and nuclear translocation of signal transducers and activators of transcription-1 in SMCs, but had no discernable effect on signal transducer and activator of transcription-1 signaling in ECs. Expression of low-density lipoprotein receptor-related protein 1, a motogenic PAI-1 receptor that activates Janus kinase/signal transducers and activators of transcription-1 signaling, was markedly lower in ECs than in SMCs. Notably, PAI-039 significantly inhibited intimal hyperplasia and inflammation in murine models of adverse vascular remodeling, but did not adversely affect re-endothelialization after endothelium-denuding mechanical vascular injury. CONCLUSIONS PAI-039 inhibits SMC migration and intimal hyperplasia, while having no inhibitory effect on ECs, which seems to be because of differences in PAI-1-dependent low-density lipoprotein receptor-related protein 1/Janus kinase/signal transducer and activator of transcription-1 signaling between SMCs and ECs. These findings suggest that PAI-1 may be an important therapeutic target in obstructive vascular diseases characterized by neointimal hyperplasia.
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Affiliation(s)
- Yan Ji
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - Zhen Weng
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - Philip Fish
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - Neha Goyal
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - Mao Luo
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - Samantha P Myears
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - Tammy L Strawn
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - Bysani Chandrasekar
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - Jianbo Wu
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO
| | - William P Fay
- From the Departments of Medicine and Medical Pharmacology & Physiology, University of Missouri School of Medicine (Y.J., Z.W., P.F., N.G., M.L., S.P.M., T.L.S., B.C., J.W., W.P.F.), and the Research Service, Harry S. Truman Memorial Veterans Hospital (B.C., W.P.F.), Columbia, MO.
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Pavón MA, Arroyo-Solera I, Téllez-Gabriel M, León X, Virós D, López M, Gallardo A, Céspedes MV, Casanova I, López-Pousa A, Mangues MA, Quer M, Barnadas A, Mangues R. Enhanced cell migration and apoptosis resistance may underlie the association between high SERPINE1 expression and poor outcome in head and neck carcinoma patients. Oncotarget 2016; 6:29016-33. [PMID: 26359694 DOI: 10.18632/oncotarget.5032] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 08/14/2015] [Indexed: 12/24/2022] Open
Abstract
High SERPINE1 expression is a common event in head and neck squamous cell carcinoma (HNSCC); however, whether it plays a role in determining clinical outcome remains still unknown. We studied SERPINE1 as a prognostic marker in two HNSCC patient cohorts. In a retrospective study (n = 80), high expression of SERPINE1 was associated with poor progression-free (p = 0.022) and cancer-specific (p = 0.040) survival. In a prospective study (n = 190), high SERPINE1 expression was associated with poor local recurrence-free (p = 0.022), progression-free (p = 0.002) and cancer-specific (p = 0.006) survival. SERPINE1 expression was identified as an independent risk factor for progression-free survival in patients treated with chemo-radiotherapy or radiotherapy (p = 0.043). In both patient cohorts, high SERPINE1 expression increased the risk of metastasis spread (p = 0.045; p = 0.029). The association between SERPINE1 expression and survival was confirmed using the HNSCC cohort included in The Cancer Genome Atlas project (n = 507). Once again, patients showing high expression had a poorer survival (p < 0.001). SERPINE1 over-expression in HNSCC cells reduced cell proliferation and enhanced migration. It also protected cells from cisplatin-induced apoptosis, which was accompanied by PI3K/AKT pathway activation. Downregulation of SERPINE1 expression had the opposite effect. We propose SERPINE1 expression as a prognostic marker that could be used to stratify HNSCC patients according to their risk of recurrence.
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Affiliation(s)
- Miguel Angel Pavón
- Grup d'Oncogènesi i Antitumorals, lnstitut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomecidicina (CIBER-BBN), Barcelona, Spain
| | - Irene Arroyo-Solera
- Grup d'Oncogènesi i Antitumorals, lnstitut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomecidicina (CIBER-BBN), Barcelona, Spain
| | - Marta Téllez-Gabriel
- Grup d'Oncogènesi i Antitumorals, lnstitut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomecidicina (CIBER-BBN), Barcelona, Spain
| | - Xavier León
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomecidicina (CIBER-BBN), Barcelona, Spain.,Department of Otorrinolaryngology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - David Virós
- Department of Otorrinolaryngology, Hospital Moises Broggi, Sant Joan Despí, Spain
| | - Montserrat López
- Department of Otorrinolaryngology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | | | - Maria Virtudes Céspedes
- Grup d'Oncogènesi i Antitumorals, lnstitut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomecidicina (CIBER-BBN), Barcelona, Spain
| | - Isolda Casanova
- Grup d'Oncogènesi i Antitumorals, lnstitut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomecidicina (CIBER-BBN), Barcelona, Spain
| | - Antonio López-Pousa
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomecidicina (CIBER-BBN), Barcelona, Spain.,Department of Medical Oncology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | | | - Miquel Quer
- Department of Otorrinolaryngology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Agustí Barnadas
- Department of Medical Oncology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Ramón Mangues
- Grup d'Oncogènesi i Antitumorals, lnstitut d'Investigacions Biomèdiques Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomecidicina (CIBER-BBN), Barcelona, Spain
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13
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Protease Inhibitors in the Interstitial Space. Protein Sci 2016. [DOI: 10.1201/9781315374307-10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Kozlova N, Jensen JK, Chi TF, Samoylenko A, Kietzmann T. PAI-1 modulates cell migration in a LRP1-dependent manner via β-catenin and ERK1/2. Thromb Haemost 2015; 113:988-98. [PMID: 25694133 DOI: 10.1160/th14-08-0678] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 01/06/2015] [Indexed: 01/28/2023]
Abstract
Plasminogen activator inhibitor-1 (PAI-1) is the major and most specific acting urokinase (uPA) and tissue plasminogen activator (tPA) inhibitor. Apart from its function in the fibrinolytic system, PAI-1 was also found to contribute to processes like tissue remodelling, angiogenesis, and tumour progression. However, the role of PAI-1 in those processes remains largely controversial with respect to the influence of PAI-1 on cell signalling pathways. Although PAI-1 does not possess its own cellular receptor, it can be bound to low-density lipoprotein receptor-related protein 1 (LRP1) which was proposed to modulate the β-catenin pathway. Therefore, we used wild-type mouse embryonic fibroblasts (MEFs), and MEFs deficient of LRP1 to study PAI-1 as modulator of the β-catenin pathway. We found that PAI-1 influences MEF proliferation and motility in a LRP1-dependent manner and that β-catenin is important for that response. In addition, expression of β-catenin and β-catenin-dependent transcriptional activity were induced by PAI-1 in wild type MEFs, but not in LRP1-deficient cells. Moreover, PAI-1-induced ERK1/2 activation was more prominent in the LRP1-deficient cells and interestingly knockdown of β-catenin abolished this effect. Together, the data of the current study show that PAI-1 can promote cell migration via LRP1-dependent activation of the β-catenin and ERK1/2 MAPK pathway which may be important in stage-specific treatment of human diseases associated with high PAI-1 levels.
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Affiliation(s)
| | | | | | - Anatoly Samoylenko
- Anatoly Samoylenko, Faculty of Biochemistry and Molecular Medicine, University of Oulu, P. O.Box 3000, FI-90014 Oulu, Finland, E-mail:
| | - Thomas Kietzmann
- Thomas Kietzmann, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, P. O.Box 3000, FI-90014 Oulu, Finland, Tel : +358 2 9448 7713,
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15
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Simone TM, Higgins CE, Czekay RP, Law BK, Higgins SP, Archambeault J, Kutz SM, Higgins PJ. SERPINE1: A Molecular Switch in the Proliferation-Migration Dichotomy in Wound-"Activated" Keratinocytes. Adv Wound Care (New Rochelle) 2014; 3:281-290. [PMID: 24669362 DOI: 10.1089/wound.2013.0512] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 01/13/2014] [Indexed: 11/13/2022] Open
Abstract
Significance: A highly interactive serine protease/plasmin/matrix metalloproteinase axis regulates stromal remodeling in the wound microenvironment. Current findings highlight the importance of stringent controls on protease expression and their topographic activities in cell proliferation, migration, and tissue homeostasis. Targeting elements in this cascading network may lead to novel therapeutic approaches for fibrotic diseases and chronic wounds. Recent Advances: Matrix-active proteases and their inhibitors orchestrate wound site tissue remodeling, cell migration, and proliferation. Indeed, the serine proteases urokinase plasminogen activator and tissue-type plasminogen activator (uPA/tPA) and their major phsyiological inhibitor, plasminogen activator inhibitor-1 (PAI-1; serine protease inhibitor clade E member 1 [SERPINE1]), are upregulated in several cell types during injury repair. Coordinate expression of proteolytic enzymes and their inhibitors in the wound bed provides a mechanism for fine control of focal proteolysis to facilitate matrix restructuring and cell motility in complex environments. Critical Issues: Cosmetic and tissue functional consequences of wound repair anomalies affect the quality of life of millions of patients in the United States alone. The development of novel therapeutics to manage individuals most affected by healing anomalies will likely derive from the identification of critical, translationally accessible, control elements in the wound site microenvironment. Future Directions: Activation of the PAI-1 gene early after wounding, its prominence in the repair transcriptome and varied functions suggest a key role in the global cutaneous injury response program. Targeting PAI-1 gene expression and/or PAI-1 function with molecular genetic constructs, neutralizing antibodies or small molecule inhibitors may provide a novel, therapeutically relevant approach, to manage the pathophysiology of wound healing disorders associated with deficient or excessive PAI-1 levels.
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Affiliation(s)
- Tessa M. Simone
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York
| | - Craig E. Higgins
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York
| | - Ralf-Peter Czekay
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York
| | - Brian K. Law
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, Florida
| | - Stephen P. Higgins
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York
| | - Jaclyn Archambeault
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York
| | - Stacie M. Kutz
- Department of Biology, Sage College of Albany, Albany, New York
| | - Paul J. Higgins
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, New York
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16
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Simone TM, Higgins SP, Higgins CE, Lennartz MR, Higgins PJ. Chemical Antagonists of Plasminogen Activator Inhibitor-1: Mechanisms of Action and Therapeutic Potential in Vascular Disease. J Mol Genet Med 2014; 8. [PMID: 26110015 PMCID: PMC4476021 DOI: 10.4172/1747-0862.1000125] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Tessa M Simone
- Center for Cell Biology & Cancer Research, Albany Medical College, Albany, New York 12208, USA
| | - Stephen P Higgins
- Center for Cell Biology & Cancer Research, Albany Medical College, Albany, New York 12208, USA
| | - Craig E Higgins
- Center for Cell Biology & Cancer Research, Albany Medical College, Albany, New York 12208, USA
| | - Michelle R Lennartz
- Center for Cell Biology & Cancer Research, Albany Medical College, Albany, New York 12208, USA
| | - Paul J Higgins
- Center for Cell Biology & Cancer Research, Albany Medical College, Albany, New York 12208, USA
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17
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Klein RM, Bernstein D, Higgins SP, Higgins CE, Higgins PJ. SERPINE1 expression discriminates site-specific metastasis in human melanoma. Exp Dermatol 2012; 21:551-4. [PMID: 22716255 DOI: 10.1111/j.1600-0625.2012.01523.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Depth of invasion, a quantifier of vertical growth, is a major cutaneous melanoma staging factor. Stromal penetrance requires pericellular proteolysis regulated by the serine protease and matrix metalloproteinase cascades. The serine protease inhibitor SERPINE1, a poor prognosis biomarker in various cancers, promotes tumor progression likely by titrating the extent and local of plasmin-initiated matrix remodelling. SERPINE1 in human melanoma was assessed using tissue arrays that included primary/metastatic tumors and normal skin. SERPINE1 was basal layer-restricted in the normal epidermis. SERPINE1 immunoreactivity was evident in 27/28 primary (96%) and 24/26 metastatic tumors (92%); cutaneous metastases (80%) had significantly elevated SERPINE1 levels compared with low signals characteristic of lymph node lesions. Moderate SERPINE1 expression was a general finding in primary melanoma, whereas reduced or increased SERPINE1 immunolocalization typified metastatic deposits. The amplitude of SERPINE1 expression may impact melanoma site-specific dissemination, with cutaneous metastases representing a high-SERPINE1 tumor subtype.
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18
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Narasaki R, Xu Z, Liang Z, Fung LCW, Donahue D, Castellino FJ, Ploplis VA. The vitronectin-binding domain of plasminogen activator inhibitor-1 plays an important functional role in lipopolysaccharide-induced lethality in mice. J Thromb Haemost 2012; 10:2618-21. [PMID: 23082983 PMCID: PMC3674865 DOI: 10.1111/jth.12032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang Y, Xu J, Chen J, Fan X, Zhang Y, Yu W, Liu J, Hui R. Promoter variants of VTN are associated with vascular disease. Int J Cardiol 2012; 168:163-8. [PMID: 23041018 DOI: 10.1016/j.ijcard.2012.09.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 09/15/2012] [Indexed: 11/17/2022]
Abstract
BACKGROUND Vitronectin is involved in the whole process of atherosclerosis. Our aim is to determine the association of VTN functional promoter variants with different types of vascular disease, and conclude the roles of vitronectin involved in vascular disease. METHODS Gel shift assays and luciferase reporter assays were used to determine the impact of variants on promoter activity. The correlation of plasma vitronectin levels with the variant was assessed in normal controls. The association of the variant with vascular disease was determined in 3 case-control studies. RESULTS A strong linkage disequilibrium was found between rs2227721 and rs2227720 in VTN promoter in Chinese (r(2)=1.0). Both variants resulted in a decreased transcription activity, and rs2227721 decreased the binding efficiency of transcription factor YY1 to the region. The rs2227721 was correlated with plasma vitronectin levels in normal controls (r=-0.207, P=0.028). The rs2227721 was associated with susceptibility of vascular disease; the odds ratios among subjects carrying rs2227721-T allele were 1.298 (95% Confidence Interval-CI, 1.033-1.631) for non-MI CAD (P<0.05), 1.346 (95% CI, 1.068-1.695) for chronic MI (P<0.05), 1.486 (95% CI, 1.145-1.928) for acute MI (P<0.001), and 1.619 (95% CI, 1.108-2.366) for deep venous thrombosis (P<0.05). CONCLUSION VTN promoter haplotype would be a novel genetic marker for vascular disease.
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Affiliation(s)
- Yibo Wang
- Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 167 Beilishi Road, Beijing 100037, China.
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Jeon H, Kim JH, Kim JH, Lee WH, Lee MS, Suk K. Plasminogen activator inhibitor type 1 regulates microglial motility and phagocytic activity. J Neuroinflammation 2012; 9:149. [PMID: 22747686 PMCID: PMC3418576 DOI: 10.1186/1742-2094-9-149] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Accepted: 06/29/2012] [Indexed: 01/05/2023] Open
Abstract
Background Plasminogen activator inhibitor type 1 (PAI-1) is the primary inhibitor of urokinase type plasminogen activators (uPA) and tissue type plasminogen activators (tPA), which mediate fibrinolysis. PAI-1 is also involved in the innate immunity by regulating cell migration and phagocytosis. However, little is known about the role of PAI-1 in the central nervous system. Methods In this study, we identified PAI-1 in the culture medium of mouse mixed glial cells by liquid chromatography and tandem mass spectrometry. Secretion of PAI-1 from glial cultures was detected by ELISA and western blotting analysis. Cell migration was evaluated by in vitro scratch-wound healing assay or Boyden chamber assay and an in vivo stab wound injury model. Phagocytic activity was measured by uptake of zymosan particles. Results The levels of PAI-1 mRNA and protein expression were increased by lipopolysaccharide and interferon-γ stimulation in both microglia and astrocytes. PAI-1 promoted the migration of microglial cells in culture via the low-density lipoprotein receptor-related protein (LRP) 1/Janus kinase (JAK)/signal transducer and activator of transcription (STAT)1 axis. PAI-1 also increased microglial migration in vivo when injected into mouse brain. PAI-1-mediated microglial migration was independent of protease inhibition, because an R346A mutant of PAI-1 with impaired PA inhibitory activity also promoted microglial migration. Moreover, PAI-1 was able to modulate microglial phagocytic activity. PAI-1 inhibited microglial engulfment of zymosan particles in a vitronectin- and Toll-like receptor 2/6-dependent manner. Conclusion Our results indicate that glia-derived PAI-1 may regulate microglial migration and phagocytosis in an autocrine or paracrine manner. This may have important implications in the regulation of brain microglial activities in health and disease.
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Affiliation(s)
- Hyejin Jeon
- Department of Pharmacology, Brain Science & Engineering Institute, CMRI, Kyungpook National University School of Medicine, 101 Dong-In, Daegu, Joong-gu, 700-422, South Korea
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Complex Regulation of the Pericellular Proteolytic Microenvironment during Tumor Progression and Wound Repair: Functional Interactions between the Serine Protease and Matrix Metalloproteinase Cascades. Biochem Res Int 2012; 2012:454368. [PMID: 22454771 PMCID: PMC3290807 DOI: 10.1155/2012/454368] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 11/21/2011] [Indexed: 01/08/2023] Open
Abstract
Spatial and temporal regulation of the pericellular proteolytic environment by local growth factors, such as EGF and TGF-β, initiates a wide repertoire of cellular responses coupled to a plasmin/matrix metalloproteinase (MMP) dependent stromal-remodeling axis. Cell motility and invasion, tumor metastasis, wound healing, and organ fibrosis, for example, represent diverse events controlled by expression of a subset of genes that encode various classes of tissue remodeling proteins. These include members of the serine protease and MMP families that functionally constitute a complex system of interacting protease cascades and titrated by their respective inhibitors. Several structural components of the extracellular matrix are upregulated by TGF-β as are matrix-active proteases (e.g., urokinase (uPA), plasmin, MMP-1, -3, -9, -10, -11, -13, -14). Stringent controls on serine protease/MMP expression and their topographic activity are essential for maintaining tissue homeostasis. Targeting individual elements in this highly interactive network may lead to novel therapeutic approaches for the treatment of cancer, fibrotic diseases, and chronic wounds.
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Simone TM, Higgins PJ. Low Molecular Weight Antagonists of Plasminogen Activator Inhibitor-1: Therapeutic Potential in Cardiovascular Disease. ACTA ACUST UNITED AC 2012; 1:101. [PMID: 23936868 DOI: 10.4172/2324-8769.1000102] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Plasminogen activator inhibitor-1 (PAI-1; SERPINE1) is the major physiologic regulator of the plasmin-based pericellular proteolytic cascade, a modulator of vascular smooth muscle cell (VSMC) migration and a causative factor in cardiovascular disease and restenosis, particularly in the context of increased vessel transforming growth factor- β1 (TGF-β1) levels. PAI-1 limits conversion of plasminogen to plasmin (and, thereby, fibrin degradation) by inhibiting its protease targets urokinase and tissue-type plasminogen activators (uPA, tPA). PAI-1 also has signaling functions and binds to the low density lipoprotein receptor-related protein 1 (LRP1) to regulate LRP1-dependent cell motility that, in turn, contributes to neointima formation. PAI-1/uPA/uPA receptor/LRPI/integrin complexes are endocytosed with subsequent uPAR/LRP1/integrin redistribution to the leading edge, initiating an "adhesion-detachment-readhesion" cycle to promote cell migration. PAI-1 also interacts with LRP1 in a uPA/uPAR-independent manner triggering Jak/Stat1 pathway activation to stimulate cell motility. PAI-1 itself is a substrate for extracellular proteases and exists in a "cleaved" form which, while unable to interact with uPA and tPA, retains LRP1-binding and migratory activity. These findings suggest that there are multiple mechanisms through which inhibition of PAI-1 may promote cardiovascular health. Several studies have focused on the design, synthesis and preclinical assessment of PAI-1 antagonists including monoclonal antibodies, peptides and low molecular weight (LMW) antagonists. This review discusses the translational impact of LMW PAI-1 antagonists on cardiovascular disease addressing PAI-1-initiated signaling, PAI-1 structure, the design and characteristics of PAI-1-targeting drugs, results of in vitro and in vivo studies, and their clinical implications.
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Affiliation(s)
- Tessa M Simone
- Center for Cell Biology & Cancer Research, Albany Medical College, Albany, New York 12208, USA
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PAI-1: An Integrator of Cell Signaling and Migration. Int J Cell Biol 2011; 2011:562481. [PMID: 21837240 PMCID: PMC3151495 DOI: 10.1155/2011/562481] [Citation(s) in RCA: 136] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 05/09/2011] [Accepted: 05/17/2011] [Indexed: 12/23/2022] Open
Abstract
Cellular migration, over simple surfaces or through complex stromal barriers, requires coordination between detachment/re-adhesion cycles, involving structural components of the extracellular matrix and their surface-binding elements (integrins), and the precise regulation of the pericellular proteolytic microenvironment. It is now apparent that several proteases and protease inhibitors, most notably urokinase plasminogen activator (uPA) and plasminogen activator inhibitor type-1 (PAI-1), also interact with several cell surface receptors transducing intracellular signals that significantly affect both motile and proliferative programs. These events appear distinct from the original function of uPA/PAI-1 as modulators of the plasmin-based proteolytic cascade. The multifaceted interactions of PAI-1 with specific matrix components (i.e., vitronectin), the low-density lipoprotein receptor-related protein-1 (LRP1), and the uPA/uPA receptor complex have dramatic consequences on the migratory phenotype and may underlie the pathophysiologic sequalae of PAI-1 deficiency and overexpression. This paper focuses on the increasingly intricate role of PAI-1 as a major mechanistic determinant of the cellular migratory phenotype.
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López-Guisa JM, Rassa AC, Cai X, Collins SJ, Eddy AA. Vitronectin accumulates in the interstitium but minimally impacts fibrogenesis in experimental chronic kidney disease. Am J Physiol Renal Physiol 2011; 300:F1244-54. [PMID: 21270094 DOI: 10.1152/ajprenal.00701.2010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Vitronectin (Vtn) is a glycoprotein found in normal serum and pathological extracellular matrix. Given its known interactions with plasminogen activator inhibitor-1 (PAI-1) and Vtn cellular receptors, especially αvβ3 integrin and the urokinase receptor (uPAR), this study was designed to investigate its role in renal fibrogenesis in the mouse model of unilateral ureteral obstruction (UUO). Kidney Vtn mRNA levels were increased ×1.8-5.1 and Vtn protein levels ×1.9-3 on days 7, 14, and 21 after UUO compared with sham kidney levels. Groups of age-matched C57BL/6 wild-type (Vtn+/+) and Vtn-/- mice (n = 10-11/group) were killed 7, 14, or 21 days after UUO. Absence of Vtn resulted in the following significant differences, but only on day 14: fewer αSMA+ interstitial myofibroblasts (×0.53), lower procollagen III mRNA levels (×0.41), lower PAI-1 protein (×0.23), higher uPA activity (×1.1), and lower αv protein (×0.32). The number of CD68+ macrophages did not differ between the genotypes. Despite these transient differences on day 14, the absence of Vtn had no effect on fibrosis severity based on both picrosirius red-positive interstitial area and total kidney collagen measured by the hydroxyproline assay. These findings suggest that despite significant interstitial Vtn deposition in the UUO model of chronic kidney disease, its fibrogenic role is either nonessential or redundant. These data are remarkable given Vtn's strong affinity for the potent fibrogenic molecule PAI-1.
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Affiliation(s)
- Jesús M López-Guisa
- Seattle Children’s Research Institute, Department of Pediatrics, University of Washington, USA
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Garg N, Goyal N, Strawn TL, Wu J, Mann KM, Lawrence DA, Fay WP. Plasminogen activator inhibitor-1 and vitronectin expression level and stoichiometry regulate vascular smooth muscle cell migration through physiological collagen matrices. J Thromb Haemost 2010; 8:1847-54. [PMID: 20492459 PMCID: PMC2941703 DOI: 10.1111/j.1538-7836.2010.03907.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Vascular smooth muscle cell (VSMC) migration is a critical process in arterial remodeling. Purified plasminogen activator inhibitor-1 (PAI-1) is reported to both promote and inhibit VSMC migration on two-dimensional (D) surfaces. OBJECTIVE To determine the effects of PAI-1 and vitronectin (VN) expressed by VSMC themselves on migration through physiological collagen matrices. METHODS We studied migration of wild-type (WT), PAI-1-deficient, VN-deficient, PAI-1/VN doubly-deficient (DKO) and PAI-1-transgenic (Tg) VSMC through three-D collagen gels. RESULTS WT VSMC migrated significantly slower than PAI-1- and VN-deficient VSMC, but significantly faster than DKO VSMC. Experiments with recombinant PAI-1 suggested that basal VSMC PAI-1 expression inhibits migration by binding VN, which is secreted by VSMC and binds collagen. However, PAI-1-over-expressing Tg VSMC migrated faster than WT VSMC. Reconstitution experiments with recombinant PAI-1 mutants suggested that the pro-migratory effect of PAI-1 over-expression required its anti-plasminogen activator (PA) and LDL receptor-related protein (LRP) binding functions, but not VN binding. While promoting VSMC migration in the absence of PAI-1, VN inhibited the pro-migratory effect of active PAI-1. CONCLUSIONS In isolation, VN and PAI-1 are each pro-migratory. However, via formation of a high-affinity, non-motogenic complex, PAI-1 and VN each buffers the other's pro-migratory effect. The level of PAI-1 expression by VSMC and the concentration of VN in extracellular matrix are critical determinants of whether PAI-1 and VN promote or inhibit migration. These findings help to rectify previously conflicting reports and suggest that PAI-1/VN stoichiometry plays an important role in VSMC migration and vascular remodeling.
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Affiliation(s)
- N Garg
- Department of Internal Medicine, University of Missouri School of Medicine and Research Service, Harry S. Truman Memorial Veterans Affairs Hospital, Columbia, MO, USA
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Masset A, Maillard C, Sounni NE, Jacobs N, Bruyére F, Delvenne P, Tacke M, Reinheckel T, Foidart JM, Coussens LM, Noël A. Unimpeded skin carcinogenesis in K14-HPV16 transgenic mice deficient for plasminogen activator inhibitor. Int J Cancer 2010; 128:283-93. [PMID: 20232379 DOI: 10.1002/ijc.25326] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Accepted: 02/23/2010] [Indexed: 12/12/2022]
Abstract
Angiogenesis, extracellular matrix remodeling and cell migration are associated with cancer progression and involve at least, the plasminogen activating system and its main physiological inhibitor, the plasminogen activator inhibitor-1 (PAI-1). Considering the recognized importance of PAI-1 in the regulation of tumor angiogenesis and invasion in murine models of skin tumor transplantation, we explored the functional significance of PAI-1 during early stages of neoplastic progression in the transgenic mouse model of multistage epithelial carcinogenesis (K14-HPV16 mice). We have studied the effect of genetic deletion of PAI-1 on inflammation, angiogenesis, lymphangiogenesis and tumor progression. In this model, PAI-1 deficiency neither impaired keratinocyte hyperproliferation or tumor development nor affected the infiltration of inflammatory cells and development of angiogenic or lymphangiogenic vasculature. We are reporting evidence for concomitant lymphangiogenic and angiogenic switches independent to PAI-1 status. Taken together, these data indicate that PAI-1 is not rate limiting for neoplastic progression and vascularization during premalignant progression, or that there is a functional redundancy between PAI-1 and other tumor regulators, masking the effect of PAI-1 deficiency in this long-term model of multistage epithelial carcinogenesis.
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Affiliation(s)
- Anne Masset
- Laboratory of Biology of Tumor and Development, Groupe Interdisciplinaire de Génoprotéomique Appliqué-GIGA Cancer, Tour de Pathologie (B23), Sart-Tilman, Liège, University of Liège, Liège, Belgium
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Wu J, Peng L, McMahon GA, Lawrence DA, Fay WP. Recombinant plasminogen activator inhibitor-1 inhibits intimal hyperplasia. Arterioscler Thromb Vasc Biol 2009; 29:1565-70. [PMID: 19574558 DOI: 10.1161/atvbaha.109.189514] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Plasminogen activator inhibitor-1 (PAI-1) overexpression is implicated in vascular disease. However, the effects of a primary increase in PAI-1 expression on arterial remodeling are poorly defined. We tested the hypothesis that recombinant PAI-1 inhibits intimal hyperplasia after vascular injury. METHODS AND RESULTS Rats underwent carotid artery injury and received intraperitoneal injections of saline or mutant forms of PAI-1 for 14 days, including an active stable mutant (PAI-1-14-1b), a mutant lacking anti-PA activity (PAI-1-R), or a mutant defective in vitronectin (VN) binding (PAI-1-K). All forms of PAI-1 significantly inhibited neointima formation, whereas elastase-cleaved PAI-1, which lacks both anti-PA and VN-binding functions, did not. Similar effects were observed in a murine model. However, the antiproliferative effect of PAI-1-R was lost in Vn(-/-) mice, suggesting that PAI-1 can inhibit intimal hyperplasia in vivo by a VN-dependent pathway not involving direct inhibition of proteases. In vitro, recombinant PAI-1 inhibited wild-type vascular smooth muscle cell (VSMC) proliferation, promoted apoptosis, and inhibited migration. These effects were lost in VN-deficient VSMCs. CONCLUSIONS Recombinant PAI-1 inhibits intimal hyperplasia by inhibiting proteases and binding VN. VN is a key determinant of the antiproliferative effect of PAI-1 overexpression. PAI-1-R has therapeutic potential to inhibit vascular restenosis without promoting thrombosis.
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Affiliation(s)
- Jianbo Wu
- Department of Internal Medicine, University of Missouri School of Medicine, and Research Service, Harry S. Truman Memorial Veterans Affairs Hospital, Columbia, MO 65212, USA.
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Abstract
Serpins form an enormous superfamily of 40-60-kDa proteins found in almost all types of organisms, including humans. Most are one-use suicide substrate serine and cysteine proteinase inhibitors that have evolved to finely regulate complex proteolytic pathways, such as blood coagulation, fibrinolysis, and inflammation. Despite distinct functions for each serpin, there is much redundancy in the primary specificity-determining residues. However, many serpins exploit additional exosites to generate the exquisite specificity that makes a given serpin effective only when certain other criteria, such as the presence of specific cofactors, are met. With a focus on human serpins, this minireview examines use of exosites by nine serpins in the initial complex-forming phase to modulate primary specificity in either binary serpin-proteinase complexes or ternary complexes that additionally employ a protein or other cofactor. A frequent theme is down-regulation of inhibitory activity unless the exosite(s) are engaged. In addition, the use of exosites by maspin and plasminogen activator inhibitor-1 to indirectly affect proteolytic processes is considered.
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Affiliation(s)
- Peter G W Gettins
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, Illinois 60612, USA.
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