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Majima M, Hosono K, Ito Y, Amano H, Nagashima Y, Matsuda Y, Watanabe SI, Nishimura H. A biologically active lipid, thromboxane, as a regulator of angiogenesis and lymphangiogenesis. Biomed Pharmacother 2023; 163:114831. [PMID: 37150029 DOI: 10.1016/j.biopha.2023.114831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/13/2023] [Accepted: 04/30/2023] [Indexed: 05/09/2023] Open
Abstract
Thromboxane (TX) and prostaglandins are metabolites of arachidonic acid, a twenty-carbon unsaturated fatty acid, and have a variety of actions that are exerted via specific receptors. Angiogenesis is defined as the formation of new blood vessels from pre-existing vascular beds and is a critical component of pathological conditions, including inflammation and cancer. Lymphatic vessels play crucial roles in the regulation of interstitial fluid, immune surveillance, and the absorption of dietary fat from the intestine; and they are also involved in the pathogenesis of various diseases. Similar to angiogenesis, lymphangiogenesis, the formation of new lymphatic vessels, is a critical component of pathological conditions. The TP-dependent accumulation of platelets in microvessels has been reported to enhance angiogenesis under pathological conditions. Although the roles of some growth factors and cytokines in angiogenesis and lymphangiogenesis have been well characterized, accumulating evidence suggests that TX induces the production of proangiogenic and prolymphangiogenic factors through the activation of adenylate cyclase, and upregulates angiogenesis and lymphangiogenesis under disease conditions. In this review, we discuss the role of TX as a regulator of angiogenesis and lymphangiogenesis, and its emerging importance as a therapeutic target.
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Affiliation(s)
- Masataka Majima
- Department of Medical Therapeutics, Kanagawa Institute of Technology, 1030 Shimo-Ogino, Atsugi, Kanagawa 243-0292, Japan; Department of Pharmacology, Kitasato University School of Medicine and Department of Molecular Pharmacology, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Sagamihara, Kanagawa 252-0374, Japan.
| | - Kanako Hosono
- Department of Pharmacology, Kitasato University School of Medicine and Department of Molecular Pharmacology, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Sagamihara, Kanagawa 252-0374, Japan
| | - Yoshiya Ito
- Department of Pharmacology, Kitasato University School of Medicine and Department of Molecular Pharmacology, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Sagamihara, Kanagawa 252-0374, Japan
| | - Hideki Amano
- Department of Pharmacology, Kitasato University School of Medicine and Department of Molecular Pharmacology, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Sagamihara, Kanagawa 252-0374, Japan
| | - Yoshinao Nagashima
- Department of Medical Therapeutics, Kanagawa Institute of Technology, 1030 Shimo-Ogino, Atsugi, Kanagawa 243-0292, Japan; Tokyo Research Laboratories, Kao Corporation, 2-1-3, Bunka, Sumida-ku, Tokyo 131-8501, Japan
| | - Yasuhiro Matsuda
- Department of Life Support Engineering, Kanagawa Institute of Technology, 1030 Shimo-Ogino, Atsugi, Kanagawa 243-0292, Japan
| | - Shin-Ichi Watanabe
- Department of Exercise Physiology and Health Sciences, Kanagawa Institute of Technology, 1030 Shimo-Ogino, Atsugi, Kanagawa 243-0292, Japan
| | - Hironobu Nishimura
- Department of Biological Information, Faculty of Health and Medical Sciences, Kanagawa Institute of Technology, 1030 Shimo-Ogino, Atsugi, Kanagawa 243-0292, Japan
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Chiang KC, Gupta A, Sundd P, Krishnamurti L. Thrombo-Inflammation in COVID-19 and Sickle Cell Disease: Two Faces of the Same Coin. Biomedicines 2023; 11:338. [PMID: 36830874 PMCID: PMC9953430 DOI: 10.3390/biomedicines11020338] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/12/2023] [Accepted: 01/15/2023] [Indexed: 01/26/2023] Open
Abstract
People with sickle cell disease (SCD) are at greater risk of severe illness and death from respiratory infections, including COVID-19, than people without SCD (Centers for Disease Control and Prevention, USA). Vaso-occlusive crises (VOC) in SCD and severe SARS-CoV-2 infection are both characterized by thrombo-inflammation mediated by endothelial injury, complement activation, inflammatory lipid storm, platelet activation, platelet-leukocyte adhesion, and activation of the coagulation cascade. Notably, lipid mediators, including thromboxane A2, significantly increase in severe COVID-19 and SCD. In addition, the release of thromboxane A2 from endothelial cells and macrophages stimulates platelets to release microvesicles, which are harbingers of multicellular adhesion and thrombo-inflammation. Currently, there are limited therapeutic strategies targeting platelet-neutrophil activation and thrombo-inflammation in either SCD or COVID-19 during acute crisis. However, due to many similarities between the pathobiology of thrombo-inflammation in SCD and COVID-19, therapies targeting one disease may likely be effective in the other. Therefore, the preclinical and clinical research spurred by the COVID-19 pandemic, including clinical trials of anti-thrombotic agents, are potentially applicable to VOC. Here, we first outline the parallels between SCD and COVID-19; second, review the role of lipid mediators in the pathogenesis of these diseases; and lastly, examine the therapeutic targets and potential treatments for the two diseases.
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Affiliation(s)
| | - Ajay Gupta
- KARE Biosciences, Orange, CA 89128, USA
- Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California Irvine (UCI) School of Medicine, Irvine, CA 92868, USA
| | - Prithu Sundd
- Vascular Medicine Institute and Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Lakshmanan Krishnamurti
- Division of Pediatric Hematology-Oncology, Yale School of Medicine, New Haven, CT 06510, USA
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The Role and Regulation of Thromboxane A2 Signaling in Cancer-Trojan Horses and Misdirection. Molecules 2022; 27:molecules27196234. [PMID: 36234768 PMCID: PMC9573598 DOI: 10.3390/molecules27196234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 11/24/2022] Open
Abstract
Over the last two decades, there has been an increasing awareness of the role of eicosanoids in the development and progression of several types of cancer, including breast, prostate, lung, and colorectal cancers. Several processes involved in cancer development, such as cell growth, migration, and angiogenesis, are regulated by the arachidonic acid derivative thromboxane A2 (TXA2). Higher levels of circulating TXA2 are observed in patients with multiple cancers, and this is accompanied by overexpression of TXA2 synthase (TBXAS1, TXA2S) and/or TXA2 receptors (TBXA2R, TP). Overexpression of TXA2S or TP in tumor cells is generally associated with poor prognosis, reduced survival, and metastatic disease. However, the role of TXA2 signaling in the stroma during oncogenesis has been underappreciated. TXA2 signaling regulates the tumor microenvironment by modulating angiogenic potential, tumor ECM stiffness, and host immune response. Moreover, the by-products of TXA2S are highly mutagenic and oncogenic, adding to the overall phenotype where TXA2 synthesis promotes tumor formation at various levels. The stability of synthetic enzymes and receptors in this pathway in most cancers (with few mutations reported) suggests that TXA2 signaling is a viable target for adjunct therapy in various tumors to reduce immune evasion, primary tumor growth, and metastasis.
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Strasenburg W, Jóźwicki J, Durślewicz J, Kuffel B, Kulczyk MP, Kowalewski A, Grzanka D, Drewa T, Adamowicz J. Tumor Cell-Induced Platelet Aggregation as an Emerging Therapeutic Target for Cancer Therapy. Front Oncol 2022; 12:909767. [PMID: 35814405 PMCID: PMC9259835 DOI: 10.3389/fonc.2022.909767] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Tumor cells have the ability to induce platelet activation and aggregation. This has been documented to be involved in tumor progression in several types of cancers, such as lung, colon, breast, pancreatic, ovarian, and brain. During the process, platelets protect circulating tumor cells from the deleterious effects of shear forces, shield tumor cells from the immune system, and provide growth factors, facilitating metastatic spread and tumor growth at the original site as well as at the site of metastasis. Herein, we present a wider view on the induction of platelet aggregation by specific factors primarily developed by cancer, including coagulation factors, adhesion receptors, growth factors, cysteine proteases, matrix metalloproteinases, glycoproteins, soluble mediators, and selectins. These factors may be presented on the surface of tumor cells as well as in their microenvironment, and some may trigger more than just one simple receptor–ligand mechanism. For a better understanding, we briefly discuss the physiological role of the factors in the platelet activation process, and subsequently, we provide scientific evidence and discuss their potential role in the progression of specific cancers. Targeting tumor cell-induced platelet aggregation (TCIPA) by antiplatelet drugs may open ways to develop new treatment modalities. On the one hand, it may affect patients’ prognosis by enhancing known therapies in advanced-stage tumors. On the other hand, the use of drugs that are mostly easily accessible and widely used in general practice may be an opportunity to propose an unparalleled antitumor prophylaxis. In this review, we present the recent discoveries of mechanisms by which cancer cells activate platelets, and discuss new platelet-targeted therapeutic strategies.
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Affiliation(s)
- Wiktoria Strasenburg
- Department of Clinical Pathomorphology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
- *Correspondence: Wiktoria Strasenburg,
| | - Jakub Jóźwicki
- Department of Clinical Pathomorphology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Justyna Durślewicz
- Department of Clinical Pathomorphology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Błażej Kuffel
- Department of General and Oncological Urology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Martyna Parol Kulczyk
- Department of Clinical Pathomorphology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Adam Kowalewski
- Department of Clinical Pathomorphology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Dariusz Grzanka
- Department of Clinical Pathomorphology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Tomasz Drewa
- Department of General and Oncological Urology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Jan Adamowicz
- Department of General and Oncological Urology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Toruń, Poland
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Rovati G, Contursi A, Bruno A, Tacconelli S, Ballerini P, Patrignani P. Antiplatelet Agents Affecting GPCR Signaling Implicated in Tumor Metastasis. Cells 2022; 11:725. [PMID: 35203374 PMCID: PMC8870128 DOI: 10.3390/cells11040725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/10/2022] [Accepted: 02/16/2022] [Indexed: 11/16/2022] Open
Abstract
Metastasis requires that cancer cells survive in the circulation, colonize distant organs, and grow. Despite platelets being central contributors to hemostasis, leukocyte trafficking during inflammation, and vessel stability maintenance, there is significant evidence to support their essential role in supporting metastasis through different mechanisms. In addition to their direct interaction with cancer cells, thus forming heteroaggregates such as leukocytes, platelets release molecules that are necessary to promote a disseminating phenotype in cancer cells via the induction of an epithelial-mesenchymal-like transition. Therefore, agents that affect platelet activation can potentially restrain these prometastatic mechanisms. Although the primary adhesion of platelets to cancer cells is mainly independent of G protein-mediated signaling, soluble mediators released from platelets, such as ADP, thromboxane (TX) A2, and prostaglandin (PG) E2, act through G protein-coupled receptors (GPCRs) to cause the activation of more additional platelets and drive metastatic signaling pathways in cancer cells. In this review, we examine the contribution of the GPCRs of platelets and cancer cells in the development of cancer metastasis. Finally, the possible use of agents affecting GPCR signaling pathways as antimetastatic agents is discussed.
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Affiliation(s)
- Gianenrico Rovati
- Department of Pharmaceutical Sciences, University of Milan, 20122 Milan, Italy;
| | - Annalisa Contursi
- Laboratory of Systems Pharmacology and Translational Therapies, Center for Advanced Studies and Technology (CAST), School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy; (A.C.); (A.B.); (S.T.); (P.B.)
- Department of Neuroscience, Imaging and Clinical Science, School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy
| | - Annalisa Bruno
- Laboratory of Systems Pharmacology and Translational Therapies, Center for Advanced Studies and Technology (CAST), School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy; (A.C.); (A.B.); (S.T.); (P.B.)
- Department of Neuroscience, Imaging and Clinical Science, School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy
| | - Stefania Tacconelli
- Laboratory of Systems Pharmacology and Translational Therapies, Center for Advanced Studies and Technology (CAST), School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy; (A.C.); (A.B.); (S.T.); (P.B.)
- Department of Neuroscience, Imaging and Clinical Science, School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy
| | - Patrizia Ballerini
- Laboratory of Systems Pharmacology and Translational Therapies, Center for Advanced Studies and Technology (CAST), School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy; (A.C.); (A.B.); (S.T.); (P.B.)
- Department of Innovative Technologies in Medicine and Dentistry, “G. d’Annunzio” University, 66100 Chieti, Italy
| | - Paola Patrignani
- Laboratory of Systems Pharmacology and Translational Therapies, Center for Advanced Studies and Technology (CAST), School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy; (A.C.); (A.B.); (S.T.); (P.B.)
- Department of Neuroscience, Imaging and Clinical Science, School of Medicine, “G. d’Annunzio” University, 66100 Chieti, Italy
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Yamane S, Amano H, Ito Y, Betto T, Matsui Y, Koizumi W, Narumiya S, Majima M. The role of thromboxane prostanoid receptor signaling in gastric ulcer healing. Int J Exp Pathol 2022; 103:4-12. [PMID: 34655121 PMCID: PMC8781669 DOI: 10.1111/iep.12410] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 05/10/2021] [Accepted: 08/08/2021] [Indexed: 01/03/2023] Open
Abstract
The process of gastric ulcer healing includes cell migration, proliferation, angiogenesis and re-epithelialization. Platelets contain angiogenesis stimulating factors that induce angiogenesis. Thromboxane A2 (TXA2 ) not only induces platelet activity but also angiogenesis. This study investigated the role of TXA2 in gastric ulcer healing using TXA2 receptor knockout (TPKO) mice. Gastric ulcer healing was suppressed by treatment with the TXA2 synthase inhibitor OKY-046 and the TXA2 receptor antagonist S-1452 compared with vehicle-treated mice. TPKO showed delayed gastric ulcer healing compared with wild-type mice (WT). The number of microvessels and CD31 expression were lower in TPKO than in WT mice, and TPKO suppressed the expression of transforming growth factor beta (TGF-β) and vascular endothelial growth factor A (VEGF-A) in areas around gastric ulcers. Immunofluorescence assays showed that TGF-β and VEGF-A co-localized with platelets. Gastric ulcer healing was significantly reduced in WT mice transplanted with TPKO compared with WT bone marrow. These results suggested that TP signalling on platelets facilitates gastric ulcer healing through TGF-β and VEGF-A.
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Affiliation(s)
- Sakiko Yamane
- Department of PharmacologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
- Department of GastroenterologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
| | - Hideki Amano
- Department of PharmacologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
| | - Yoshiya Ito
- Department of PharmacologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
| | - Tomohiro Betto
- Department of PharmacologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
- Department of GastroenterologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
| | - Yoshio Matsui
- Department of GastroenterologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
| | - Wasaburo Koizumi
- Department of GastroenterologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
| | - Shuh Narumiya
- Department of GastroenterologyDrug Discovery MedicineKyoto University Graduate School of MedicineKyotoJapan
| | - Masataka Majima
- Department of PharmacologyThoracic Surgery Kitasato University School of MedicineKanagawaJapan
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Chiang KC, Rizk JG, Nelson DJ, Krishnamurti L, Subbian S, Imig JD, Khan I, Reddy ST, Gupta A. Ramatroban for chemoprophylaxis and treatment of COVID-19: David takes on Goliath. Expert Opin Ther Targets 2022; 26:13-28. [PMID: 35068281 PMCID: PMC10119876 DOI: 10.1080/14728222.2022.2031975] [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: 10/25/2021] [Accepted: 01/17/2022] [Indexed: 01/08/2023]
Abstract
INTRODUCTION In COVID-19 pneumonia, there is a massive increase in fatty acid levels and lipid mediators with a predominance of cyclooxygenase metabolites, notably TxB2 ≫ PGE2 > PGD2 in the lungs, and 11-dehydro-TxB2, a TxA2 metabolite, in the systemic circulation. While TxA2 stimulates thromboxane prostanoid (TP) receptors, 11-dehydro-TxB2 is a full agonist of DP2 (formerly known as the CRTh2) receptors for PGD2. Anecdotal experience of using ramatroban, a dual receptor antagonist of the TxA2/TP and PGD2/DP2 receptors, demonstrated rapid symptomatic relief from acute respiratory distress and hypoxemia while avoiding hospitalization. AREAS COVERED Evidence supporting the role of TxA2/TP receptors and PGD2/DP2 receptors in causing rapidly progressive lung injury associated with hypoxemia, a maladaptive immune response and thromboinflammation is discussed. An innovative perspective on the dual antagonism of TxA2/TP and PGD2/DP2 receptor signaling as a therapeutic approach in COVID-19 is presented. This paper examines ramatroban an anti-platelet, immunomodulator, and antifibrotic agent for acute and long-haul COVID-19. EXPERT OPINION Ramatroban, a dual blocker of TP and DP2 receptors, has demonstrated efficacy in animal models of respiratory dysfunction, atherosclerosis, thrombosis, and sepsis, as well as preliminary evidence for rapid relief from dyspnea and hypoxemia in COVID-19 pneumonia. Ramatroban merits investigation as a promising antithrombotic and immunomodulatory agent for chemoprophylaxis and treatment.
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Affiliation(s)
| | - John G. Rizk
- Department of Pharmaceutical Health Services Research, University of Maryland School of Pharmacy, Baltimore, MD, USA
- Arizona State University, Edson College, Phoenix, AZ, USA
| | | | - Lakshmanan Krishnamurti
- Department of Pediatric Hematology and Oncology, Yale School of Medicine, New Haven, CT, USA
| | - Selvakumar Subbian
- Rutgers University, New Jersey Medical School and Public Health Research Institute, Newark, NJ, USA
| | - John D. Imig
- Drug Discovery Center and Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Imran Khan
- Department of Pathology and Laboratory Medicine, the University of California at Davis, Sacramento, CA, USA
| | - Srinivasa T. Reddy
- Departments of Medicine, and Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- Molecular Toxicology Interdepartmental Degree Program, UCLA, Los Angeles, CA, USA
| | - Ajay Gupta
- Charak Foundation, Orange, CA
- Division of Nephrology, Hypertension and Kidney Transplantation, University of California Irvine, Orange, CA, USA
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Chiang KC, Imig JD, Kalantar-Zadeh K, Gupta A. Kidney in the net of acute and long-haul coronavirus disease 2019: a potential role for lipid mediators in causing renal injury and fibrosis. Curr Opin Nephrol Hypertens 2022; 31:36-46. [PMID: 34846312 DOI: 10.1097/mnh.0000000000000750] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE OF REVIEW Severe COVID-19 disease is often complicated by acute kidney injury (AKI), which may transition to chronic kidney disease (CKD). Better understanding of underlying mechanisms is important in advancing therapeutic approaches. RECENT FINDINGS SARS-CoV-2-induced endothelial injury initiates platelet activation, platelet-neutrophil partnership and release of neutrophil extracellular traps. The resulting thromboinflammation causes ischemia-reperfusion (I/R) injury to end organs. Severe COVID-19 induces a lipid-mediator storm with massive increases in thromboxane A2 (TxA2) and PGD2, which promote thromboinflammation and apoptosis of renal tubular cells, respectively, and thereby enhance renal fibrosis. COVID-19-associated AKI improves rapidly in the majority. However, 15-30% have protracted renal injury, raising the specter of transition from AKI to CKD. SUMMARY In COVID-19, the lipid-mediator storm promotes thromboinflammation, ischemia-reperfusion injury and cytotoxicity. The thromboxane A2 and PGD2 signaling presents a therapeutic target with potential to mitigate AKI and transition to CKD. Ramatroban, the only dual antagonist of the thromboxane A2/TPr and PGD2/DPr2 signaling could potentially mitigate renal injury in acute and long-haul COVID. Urgent studies targeting the lipid-mediator storm are needed to potentially reduce the heavy burden of kidney disease emerging in the wake of the current pandemic.
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Affiliation(s)
| | - John D Imig
- Drug Discovery Center and Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Kamyar Kalantar-Zadeh
- Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California Irvine (UCI) School of Medicine, Orange, California, USA
| | - Ajay Gupta
- KARE Biosciences, Orange, California
- Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California Irvine (UCI) School of Medicine, Orange, California, USA
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Biologically active lipids in the regulation of lymphangiogenesis in disease states. Pharmacol Ther 2021; 232:108011. [PMID: 34614423 DOI: 10.1016/j.pharmthera.2021.108011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/31/2021] [Accepted: 09/01/2021] [Indexed: 02/06/2023]
Abstract
Lymphatic vessels have crucial roles in the regulation of interstitial fluids, immune surveillance, and the absorption of dietary fat in the intestine. Lymphatic function is also closely related to the pathogenesis of various disease states such as inflammation, lymphedema, endometriosis, liver dysfunction, and tumor metastasis. Lymphangiogenesis, the formation of new lymphatic vessels from pre-existing lymphatic vessels, is a critical determinant in the above conditions. Although the effect of growth factors on lymphangiogenesis is well-characterized, and biologically active lipids are known to affect smooth muscle contractility and vasoaction, there is accumulating evidence that biologically active lipids are also important inducers of growth factors and cytokines that regulate lymphangiogenesis. This review discusses recent advances in our understanding of biologically active lipids, including arachidonic acid metabolites, sphingosine 1-phosphate, and lysophosphatidic acid, as regulators of lymphangiogenesis, and the emerging importance of the lymphangiogenesis as a therapeutic target.
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Cariello M, Piccinin E, Zerlotin R, Piglionica M, Peres C, Divella C, Signorile A, Villani G, Ingravallo G, Sabbà C, Moschetta A. Adhesion of Platelets to Colon Cancer Cells Is Necessary to Promote Tumor Development in Xenograft, Genetic and Inflammation Models. Cancers (Basel) 2021; 13:cancers13164243. [PMID: 34439397 PMCID: PMC8394609 DOI: 10.3390/cancers13164243] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Platelets are small, anucleate, metabolically active cells and they represent an important linkage between tissue damage and inflammatory response. Several studies focused on the central role of platelets in inflammation and tumor development through their direct interaction with other cell types. Mice lacking the vascular adhesion molecules P-selectin exhibited a reduction in tumor metastases. We demonstrated that P-selectin-ablated platelets reduced tumor growth in a xenograft adenocarcinoma model. Furthermore, the lack of P-selectin decreased colon cancer progression in genetic mouse models and in chemically-induced colitis colorectal carcinogenesis. Our results suggest that platelets-cancer cells crosstalk via P-selectin is fundamental for tumor development. Abstract Platelets represent the linkage between tissue damage and inflammatory response with a putative role in tumorigenesis. Given the importance of the microenvironment in colon cancer development, we elucidated the eventual role of platelets-cancer cells crosstalk in in vivo colon cancer models. To evaluate the involvement of platelets in intestinal tumorigenesis, we first analyzed if the ablation of β-integrin P-selectin that drives platelets-cell adhesion, would contribute to platelets-colon cancer cell interaction and drive cancer progression. In a xenograft tumor model, we observed that when tumors are inoculated with platelets, the ablation of P-selectin significantly reduced tumor growth compared to control platelets. Furthermore, in genetic models, as well as in chronic colitis-associated colorectal carcinogenesis, P-selectin ablated mice displayed a significant reduction in tumor number and size compared to control mice. Taken together, our data highlights the importance of platelets in the tumor microenvironment for intestinal tumorigenesis. These results support the hypothesis that a strategy aimed to inhibit platelets adhesion to tumor cells are able to block tumor growth and could represent a novel therapeutic approach to colon cancer treatment.
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Affiliation(s)
- Marica Cariello
- Department of Interdisciplinary Medicine, “Aldo Moro” University of Bari, 70124 Bari, Italy; (M.C.); (E.P.); (R.Z.); (M.P.); (C.S.)
| | - Elena Piccinin
- Department of Interdisciplinary Medicine, “Aldo Moro” University of Bari, 70124 Bari, Italy; (M.C.); (E.P.); (R.Z.); (M.P.); (C.S.)
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, “Aldo Moro” University of Bari, 70124 Bari, Italy; (A.S.); (G.V.)
| | - Roberta Zerlotin
- Department of Interdisciplinary Medicine, “Aldo Moro” University of Bari, 70124 Bari, Italy; (M.C.); (E.P.); (R.Z.); (M.P.); (C.S.)
| | - Marilidia Piglionica
- Department of Interdisciplinary Medicine, “Aldo Moro” University of Bari, 70124 Bari, Italy; (M.C.); (E.P.); (R.Z.); (M.P.); (C.S.)
| | - Claudia Peres
- INBB, National Institute for Biostructures and Biosystems, 00136 Rome, Italy;
| | - Chiara Divella
- Nephrology, Dialysis, and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, 71024 Bari, Italy;
| | - Anna Signorile
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, “Aldo Moro” University of Bari, 70124 Bari, Italy; (A.S.); (G.V.)
| | - Gaetano Villani
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, “Aldo Moro” University of Bari, 70124 Bari, Italy; (A.S.); (G.V.)
| | - Giuseppe Ingravallo
- Pathology Section, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, 70124 Bari, Italy;
| | - Carlo Sabbà
- Department of Interdisciplinary Medicine, “Aldo Moro” University of Bari, 70124 Bari, Italy; (M.C.); (E.P.); (R.Z.); (M.P.); (C.S.)
| | - Antonio Moschetta
- Department of Interdisciplinary Medicine, “Aldo Moro” University of Bari, 70124 Bari, Italy; (M.C.); (E.P.); (R.Z.); (M.P.); (C.S.)
- INBB, National Institute for Biostructures and Biosystems, 00136 Rome, Italy;
- Correspondence: ; Tel.: +39-0805593262; Fax: +39-0805478126
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11
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Rizk JG, Lavie CJ, Gupta A. Low-dose aspirin for early COVID-19: does the early bird catch the worm? Expert Opin Investig Drugs 2021; 30:785-788. [PMID: 34190669 DOI: 10.1080/13543784.2021.1950687] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- John G Rizk
- Arizona State University, Edson College, Phoenix, AZ, USA
| | - Carl J Lavie
- John Ochsner Heart and Vascular Institute, Ochsner Clinical School-The University of Queensland School of Medicine, New Orleans, LA, USA
| | - Ajay Gupta
- Division of Nephrology, Hypertension and Kidney Transplantation, University of California, Irvine, School of Medicine, Irvine, CA, USA
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12
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Matsuda H, Ito Y, Hosono K, Tsuru S, Inoue T, Nakamoto S, Kurashige C, Hirashima M, Narumiya S, Okamoto H, Majima M. Roles of Thromboxane Receptor Signaling in Enhancement of Lipopolysaccharide-Induced Lymphangiogenesis and Lymphatic Drainage Function in Diaphragm. Arterioscler Thromb Vasc Biol 2021; 41:1390-1407. [PMID: 33567865 DOI: 10.1161/atvbaha.120.315507] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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MESH Headings
- Animals
- Cells, Cultured
- Diaphragm/immunology
- Diaphragm/metabolism
- Disease Models, Animal
- Humans
- Inflammation/chemically induced
- Inflammation/immunology
- Inflammation/metabolism
- Inflammation/physiopathology
- Lipopolysaccharides
- Lymphangiogenesis/drug effects
- Lymphatic Vessels/drug effects
- Lymphatic Vessels/metabolism
- Macrophages, Peritoneal/immunology
- Macrophages, Peritoneal/metabolism
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Receptors, Thromboxane A2, Prostaglandin H2/genetics
- Receptors, Thromboxane A2, Prostaglandin H2/metabolism
- Signal Transduction
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Thromboxane A2/metabolism
- Vascular Endothelial Growth Factor C/metabolism
- Vascular Endothelial Growth Factor D/metabolism
- Mice
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Affiliation(s)
- Hiromi Matsuda
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Anesthesiology (H.M., S.T., C.K., H.O.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Yoshiya Ito
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Kanako Hosono
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Seri Tsuru
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Anesthesiology (H.M., S.T., C.K., H.O.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Tomoyoshi Inoue
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Shuji Nakamoto
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Center for Innovation in Immunoregulation Technology and Therapeutics, Kyoto University Graduate School of Medicine, Japan (S.N.)
| | - Chie Kurashige
- Department of Anesthesiology (H.M., S.T., C.K., H.O.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Masanori Hirashima
- Division of Pharmacology, Graduate School of Medical and Dental Sciences, Niigata University, Japan (M.H.)
| | - Shuh Narumiya
- Center for Innovation in Immunoregulation Technology and Therapeutics, Kyoto University Graduate School of Medicine, Japan (S.N.)
| | - Hirotsugu Okamoto
- Department of Anesthesiology (H.M., S.T., C.K., H.O.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Masataka Majima
- Department of Molecular Pharmacology, Graduate School of Medical Sciences (H.M., Y.I., K.H., S.T., T.I., S.N., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
- Department of Pharmacology (H.M., Y.I., K.H., S.T., M.M.), School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
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13
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Wang J, Zhou P, Han Y, Zhang H. Platelet transfusion for cancer secondary thrombocytopenia: Platelet and cancer cell interaction. Transl Oncol 2021; 14:101022. [PMID: 33545547 PMCID: PMC7868729 DOI: 10.1016/j.tranon.2021.101022] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 01/14/2023] Open
Abstract
Chemoradiotherapy and autoimmune disorder often lead to secondary thrombocytopenia in cancer patients, and thus, platelet transfusion is needed to stop or prevent bleeding. However, the effect of platelet transfusion remains controversial for the lack of agreement on transfusion strategies. Before being transfused, platelets are stored in blood banks, and their activation is usually stimulated. Increasing evidence shows activated platelets may promote metastasis and the proliferation of cancer cells, while cancer cells also induce platelet activation. Such a vicious cycle of interaction between activated platelets and cancer cells is harmful for the prognosis of cancer patients, which results in an increased tumor recurrence rate and decreased five-year survival rate. Therefore, it is important to explore platelet transfusion strategies, summarize mechanisms of interaction between platelets and tumor cells, and carefully evaluate the pros and cons of platelet transfusion for better treatment and prognosis for patients with cancer with secondary thrombocytopenia.
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Affiliation(s)
- Juan Wang
- Class 2016 Clinical Medicine, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Pan Zhou
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Yunwei Han
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China.
| | - Hongwei Zhang
- Department of Blood Transfusion, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China.
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14
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Bányai L, Trexler M, Kerekes K, Csuka O, Patthy L. Use of signals of positive and negative selection to distinguish cancer genes and passenger genes. eLife 2021; 10:e59629. [PMID: 33427197 PMCID: PMC7877913 DOI: 10.7554/elife.59629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 01/10/2021] [Indexed: 12/14/2022] Open
Abstract
A major goal of cancer genomics is to identify all genes that play critical roles in carcinogenesis. Most approaches focused on genes positively selected for mutations that drive carcinogenesis and neglected the role of negative selection. Some studies have actually concluded that negative selection has no role in cancer evolution. We have re-examined the role of negative selection in tumor evolution through the analysis of the patterns of somatic mutations affecting the coding sequences of human genes. Our analyses have confirmed that tumor suppressor genes are positively selected for inactivating mutations, oncogenes, however, were found to display signals of both negative selection for inactivating mutations and positive selection for activating mutations. Significantly, we have identified numerous human genes that show signs of strong negative selection during tumor evolution, suggesting that their functional integrity is essential for the growth and survival of tumor cells.
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Affiliation(s)
- László Bányai
- Institute of Enzymology, Research Centre for Natural SciencesBudapestHungary
| | - Maria Trexler
- Institute of Enzymology, Research Centre for Natural SciencesBudapestHungary
| | - Krisztina Kerekes
- Institute of Enzymology, Research Centre for Natural SciencesBudapestHungary
| | - Orsolya Csuka
- Department of Pathogenetics, National Institute of OncologyBudapestHungary
| | - László Patthy
- Institute of Enzymology, Research Centre for Natural SciencesBudapestHungary
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15
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Werfel TA, Hicks DJ, Rahman B, Bendeman WE, Duvernay MT, Maeng JG, Hamm H, Lavieri RR, Joly MM, Pulley JM, Elion DL, Brantley-Sieders DM, Cook RS. Repurposing of a Thromboxane Receptor Inhibitor Based on a Novel Role in Metastasis Identified by Phenome-Wide Association Study. Mol Cancer Ther 2020; 19:2454-2464. [PMID: 33033174 DOI: 10.1158/1535-7163.mct-19-1106] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 03/03/2020] [Accepted: 09/15/2020] [Indexed: 11/16/2022]
Abstract
Although new drug discoveries are revolutionizing cancer treatments, repurposing existing drugs would accelerate the timeline and lower the cost for bringing treatments to cancer patients. Our goal was to repurpose CPI211, a potent and selective antagonist of the thromboxane A2-prostanoid receptor (TPr), a G-protein-coupled receptor that regulates coagulation, blood pressure, and cardiovascular homeostasis. To identify potential new clinical indications for CPI211, we performed a phenome-wide association study (PheWAS) of the gene encoding TPr, TBXA2R, using robust deidentified health records and matched genomic data from more than 29,000 patients. Specifically, PheWAS was used to identify clinical manifestations correlating with a TBXA2R single-nucleotide polymorphism (rs200445019), which generates a T399A substitution within TPr that enhances TPr signaling. Previous studies have correlated 200445019 with chronic venous hypertension, which was recapitulated by this PheWAS analysis. Unexpectedly, PheWAS uncovered an rs200445019 correlation with cancer metastasis across several cancer types. When tested in several mouse models of metastasis, TPr inhibition using CPI211 potently blocked spontaneous metastasis from primary tumors, without affecting tumor cell proliferation, motility, or tumor growth. Further, metastasis following intravenous tumor cell delivery was blocked in mice treated with CPI211. Interestingly, TPr signaling in vascular endothelial cells induced VE-cadherin internalization, diminished endothelial barrier function, and enhanced transendothelial migration by tumor cells, phenotypes that were decreased by CPI211. These studies provide evidence that TPr signaling promotes cancer metastasis, supporting the study of TPr inhibitors as antimetastatic agents and highlighting the use of PheWAS as an approach to accelerate drug repurposing.
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Affiliation(s)
- Thomas A Werfel
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee.,Department of Chemical Engineering, University of Mississippi, Oxford, Mississippi
| | - Donna J Hicks
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Bushra Rahman
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Wendy E Bendeman
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Matthew T Duvernay
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jae G Maeng
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Heidi Hamm
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Robert R Lavieri
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Meghan M Joly
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jill M Pulley
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - David L Elion
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Dana M Brantley-Sieders
- Breast Cancer Research Program, Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee.,Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Rebecca S Cook
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee. .,Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee.,Breast Cancer Research Program, Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee.,Department of Biomedical Engineering, Vanderbilt University School of Engineering, Nashville, Tennessee
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16
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Gkolfinopoulos S, Jones RL, Constantinidou A. The Emerging Role of Platelets in the Formation of the Micrometastatic Niche: Current Evidence and Future Perspectives. Front Oncol 2020; 10:374. [PMID: 32257952 PMCID: PMC7093714 DOI: 10.3389/fonc.2020.00374] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/03/2020] [Indexed: 12/21/2022] Open
Abstract
Accumulating evidence suggests that platelets play a key role in cancer metastatic dissemination through their multilevel interaction with tumor cells. Most crucial is the contribution of platelets to the formation and expansion of the early metastatic niche, a protective microenvironment that nurtures the first metastatic cells and is necessary for the establishment of overt metastatic disease. A multitude of mechanisms have been proposed toward this effect. The current review examines the implication of platelets in the three most well-studied mechanisms: (a) the initial preparation of the metastatic microenvironment by the formation of the extracellular matrix (ECM) and the recruitment of granulocytes, (b) the creation of the neovasculature (important for providing the developing tumor with oxygen and nutrients and clearing away the metabolic waste), and (c) the evasion of the immune response by the creation of an immune-suppressive environment around the developing metastases. Finally, the review provides current perspectives on the potential clinical relevance of platelets in cancer progression and their consequent role in cancer therapeutics.
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Affiliation(s)
| | - Robin L Jones
- The Royal Marsden Hospital NHS Foundation Trust and Institute of Cancer Research, London, United Kingdom
| | - Anastasia Constantinidou
- BOC Oncology Center, Nicosia, Cyprus.,Medical School, University of Cyprus, Nicosia, Cyprus.,Cyprus Cancer Research Institute, Nicosia, Cyprus
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17
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Hybiak J, Broniarek I, Kiryczyński G, Los LD, Rosik J, Machaj F, Sławiński H, Jankowska K, Urasińska E. Aspirin and its pleiotropic application. Eur J Pharmacol 2019; 866:172762. [PMID: 31669590 DOI: 10.1016/j.ejphar.2019.172762] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 10/21/2019] [Accepted: 10/25/2019] [Indexed: 12/31/2022]
Abstract
Aspirin (acetylsalicylic acid), the oldest synthetic drug, was originally used as an anti-inflammatory medication. Being an irreversible inhibitor of COX (prostaglandin-endoperoxide synthase) enzymes that produce precursors for prostaglandins and thromboxanes, it has gradually found several other applications. Sometimes these applications are unrelated to its original purpose for example its use as an anticoagulant. Applications such as these have opened opportunities for new treatments. In this case, it has been tested in patients with cardiovascular disease to reduce the risk of myocardial infarct. Its function as an anticoagulant has also been explored in the prophylaxis and treatment of pre-eclampsia, where due to its anti-inflammatory properties, aspirin intake may be used to reduce the risk of colorectal cancer. It is important to always consider both the risks and benefits of aspirin's application. This is especially important for proposed use in the prevention and treatment of neurologic ailments like Alzheimer's disease, or in the prophylaxis of myocardial infarct. In such cases, the decision if aspirin should be applied, and at what dose may be guided by specific molecular markers. In this revived paper, the pleiotropic application of aspirin is summarized.
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Affiliation(s)
- Jolanta Hybiak
- Department of Pathology, Pomeranian Medical University, Szczecin, Poland.
| | - Izabela Broniarek
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University Poznan, Poland
| | - Gerard Kiryczyński
- Department of Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Laura D Los
- Faculty of Science, University of Manitoba, Winnipeg, Canada
| | - Jakub Rosik
- Department of Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Filip Machaj
- Department of Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Hubert Sławiński
- Wellcome Centre for Human Genetics, University of Oxford, United Kingdom
| | - Kornelia Jankowska
- Department of Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Elżbieta Urasińska
- Department of Pathology, Pomeranian Medical University, Szczecin, Poland
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18
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Abstract
Bioactive lipids are essential components of human cells and tissues. As discussed in this review, the cancer lipidome is diverse and malleable, with the ability to promote or inhibit cancer pathogenesis. Targeting lipids within the tumor and surrounding microenvironment may be a novel therapeutic approach for treating cancer patients. Additionally, the emergence of a novel super-family of lipid mediators termed specialized pro-resolving mediators (SPMs) has revealed a new role for bioactive lipid mediators in the resolution of inflammation in cancer biology. The role of SPMs in cancer holds great promise in our understanding of cancer pathogenesis and can ultimately be used in future cancer diagnostics and therapy.
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Affiliation(s)
- Megan L Sulciner
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Allison Gartung
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Molly M Gilligan
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Charles N Serhan
- Department of Anesthesiology, Center for Experimental Therapeutics and Reperfusion Injury, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Dipak Panigrahy
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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19
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Hsieh KY, Wei CK, Wu CC. YC-1 Prevents Tumor-Associated Tissue Factor Expression and Procoagulant Activity in Hypoxic Conditions by Inhibiting p38/NF-κB Signaling Pathway. Int J Mol Sci 2019; 20:ijms20020244. [PMID: 30634531 PMCID: PMC6359014 DOI: 10.3390/ijms20020244] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 12/31/2022] Open
Abstract
Tissue factor (TF) expressed in cancer cells has been linked to tumor-associated thrombosis, a major cause of mortality in malignancy. Hypoxia is a common feature of solid tumors and can upregulate TF. In this study, the effect of YC-1, a putative inhibitor of hypoxia-inducible factor-1α (HIF-1α), on hypoxia-induced TF expression was investigated in human lung cancer A549 cells. YC-1 selectively prevented hypoxia-induced TF expression and procoagulant activity without affecting the basal TF levels. Surprisingly, knockdown or pharmacological inhibition of HIF-1α failed to mimic YC-1′s effect on TF expression, suggesting other mechanisms are involved. NF-κB, a transcription factor for TF, and its upstream regulator p38, were activated by hypoxia exposure. Treatment of hypoxic A549 cells with YC-1 prevented the activation of both NF-κB and p38. Inhibition of p38 suppressed hypoxia-activated NF-κB, and inhibited TF expression and activity to similar levels as treatment with an NF-κB inhibitor. Furthermore, stimulation of p38 by anisomycin reversed the effects of YC-1. Taken together, our results suggest that YC-1 prevents hypoxia-induced TF in cancer cells by inhibiting the p38/NF-κB pathway, this is distinct from the conventional anticoagulants that systemically inhibit blood coagulation and may shed new light on approaches to treat tumor-associated thrombosis.
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Affiliation(s)
- Kan-Yen Hsieh
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Chien-Kei Wei
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Research Center for Natural Product and Drug Development, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
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20
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Guillem-Llobat P, Dovizio M, Bruno A, Ricciotti E, Cufino V, Sacco A, Grande R, Alberti S, Arena V, Cirillo M, Patrono C, FitzGerald GA, Steinhilber D, Sgambato A, Patrignani P. Aspirin prevents colorectal cancer metastasis in mice by splitting the crosstalk between platelets and tumor cells. Oncotarget 2018; 7:32462-77. [PMID: 27074574 PMCID: PMC5078026 DOI: 10.18632/oncotarget.8655] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 03/28/2016] [Indexed: 12/30/2022] Open
Abstract
We investigated whether platelets prime colon cancer cells for metastasis and whether pharmacological inhibition of platelet function may prevent it. Coculturing HT29 human colon carcinoma cells with human platelets led to the induction of mesenchymal-like cancer cells characterized by downregulation of E-cadherin and upregulation of Twist1, enhanced cell mobility and a proaggregatory action on platelets. These changes were prevented by different antiplatelet agents, aspirin[an inhibitor of cyclooxygenase(COX)-1], DG-041[an antagonist of prostaglandin(PG)E2 EP3 receptor] and ticagrelor (a P2Y12 receptor antagonist). The injection of HT29 cells, exposed to platelets in vitro, into the tail vein of humanized immunodeficient mice led to higher incidence of lung metastasis compared to the injection of untreated HT29 cells. This effect was associated with enhanced systemic biosynthesis of thromboxane(TX)A2 and PGE2in vivo. Platelet COX-1 inhibition by aspirin administration to mice prevented the increased rate of metastasis as well as the enhanced production of TXA2 and PGE2 induced by the in vitro priming of HT29 cells by platelets. In conclusion, targeting platelet COX-1 with low-dose aspirin exerts an antimetastatic action by averting the stem cell mimicry of cancer cells associated with enhanced proaggregatory effects induced by platelet-tumor cell interactions. These effects may be shared by other antiplatelet drugs.
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Affiliation(s)
- Paloma Guillem-Llobat
- Department of Neuroscience, Imaging and Clinical Science, Section of Cardiovascular and Pharmacological Sciences, and CeSI-MeT, "G. d'Annunzio" University, School of Medicine, Chieti, Italy
| | - Melania Dovizio
- Department of Neuroscience, Imaging and Clinical Science, Section of Cardiovascular and Pharmacological Sciences, and CeSI-MeT, "G. d'Annunzio" University, School of Medicine, Chieti, Italy
| | - Annalisa Bruno
- Department of Neuroscience, Imaging and Clinical Science, Section of Cardiovascular and Pharmacological Sciences, and CeSI-MeT, "G. d'Annunzio" University, School of Medicine, Chieti, Italy
| | - Emanuela Ricciotti
- Institute for Translational Medicine and Therapeutics, University of Pennsylvania, School of Medicine, Philadelphia, PA, USA
| | - Valerio Cufino
- Institute of General Pathology, Catholic University School of Medicine, Rome, Italy
| | - Angela Sacco
- Department of Neuroscience, Imaging and Clinical Science, Section of Cardiovascular and Pharmacological Sciences, and CeSI-MeT, "G. d'Annunzio" University, School of Medicine, Chieti, Italy
| | - Rosalia Grande
- Department of Neuroscience, Imaging and Clinical Science, Section of Cardiovascular and Pharmacological Sciences, and CeSI-MeT, "G. d'Annunzio" University, School of Medicine, Chieti, Italy
| | - Sara Alberti
- Department of Neuroscience, Imaging and Clinical Science, Section of Cardiovascular and Pharmacological Sciences, and CeSI-MeT, "G. d'Annunzio" University, School of Medicine, Chieti, Italy
| | - Vincenzo Arena
- Institute of Pathologic Anatomy, Catholic University, School of Medicine, Rome, Italy
| | - Mariangela Cirillo
- Institute of Pathologic Anatomy, Catholic University, School of Medicine, Rome, Italy
| | - Carlo Patrono
- Institute of Pharmacology, Catholic University, School of Medicine, Rome, Italy
| | - Garret A FitzGerald
- Institute for Translational Medicine and Therapeutics, University of Pennsylvania, School of Medicine, Philadelphia, PA, USA
| | - Dieter Steinhilber
- Institute of Pharmaceutical Chemistry, Goethe University, Frankfurt, Germany
| | - Alessandro Sgambato
- Institute of General Pathology, Catholic University School of Medicine, Rome, Italy
| | - Paola Patrignani
- Department of Neuroscience, Imaging and Clinical Science, Section of Cardiovascular and Pharmacological Sciences, and CeSI-MeT, "G. d'Annunzio" University, School of Medicine, Chieti, Italy
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21
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Amano H, Nakamura M, Ito Y, Kakutani H, Eshima K, Kitasato H, Narumiya S, Majima M. Thromboxane A synthase enhances blood flow recovery from hindlimb ischemia. J Surg Res 2016; 204:153-63. [DOI: 10.1016/j.jss.2016.04.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 04/06/2016] [Accepted: 04/13/2016] [Indexed: 11/30/2022]
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22
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Yokouchi H, Kanazawa K. Revisiting the role of COX-2 inhibitor for non-small cell lung cancer. Transl Lung Cancer Res 2015; 4:660-4. [PMID: 26629442 DOI: 10.3978/j.issn.2218-6751.2015.04.03] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Accumulating preclinical and clinical studies have shown that cyclooxygenase-2 (COX-2) inhibitor has some efficacy for non-small cell lung cancer (NSCLC). However, two phase III clinical trials using COX-2 inhibitor in combination with platinum-based chemotherapy showed no survival benefit for "unselected" patients with advanced NSCLC. Thus, exploratory analyses of the association between biomarker and clinical outcome of NSCLC patients treated with COX-2 inhibitors have been warranted. A report by Edelman recently published in the Journal of Clinical Oncology demonstrated the results of a prospective randomized trial using a combination of chemotherapy (docetaxel or pemetrexed) and either COX-2 inhibitor or a placebo for patients with advanced NSCLC. The remarkable point of this study was that it adopted the eligible criteria requiring decreased urinary levels of prostaglandin E metabolite (PGE-M) after administration of COX-2 inhibitor in a run-in period, as a possible predictive marker for the COX-2 inhibitor. The primary endpoint was progression-free survival (PFS). However, no improvement in PFS was observed between the patients treated with COX-2 inhibitor and those with placebo. A number of efforts from various investigators, including this report, have failed to demonstrate the meaningful clinical effect of COX-2 inhibitor for NSCLC. Is COX-2 inhibitor useless anymore? Here, we address the "difficult" character of this COX-2 inhibitor from various viewpoints and discuss potential future strategy using this drug.
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Affiliation(s)
- Hiroshi Yokouchi
- Department of Pulmonary Medicine, Fukushima Medical University, Fukushima, Japan
| | - Kenya Kanazawa
- Department of Pulmonary Medicine, Fukushima Medical University, Fukushima, Japan
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Gravina GL, Mancini A, Muzi P, Ventura L, Biordi L, Ricevuto E, Pompili S, Mattei C, Di Cesare E, Jannini EA, Festuccia C. CXCR4 pharmacogical inhibition reduces bone and soft tissue metastatic burden by affecting tumor growth and tumorigenic potential in prostate cancer preclinical models. Prostate 2015; 75:1227-46. [PMID: 26073897 DOI: 10.1002/pros.23007] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 03/25/2015] [Indexed: 12/22/2022]
Abstract
BACKGROUND The majority of prostate cancer (Pca) patient morbidity can be attributed to bone metastatic events, which poses a significant clinical obstacle. Therefore, a better understanding of this phenomenon is imperative and might help to develop novel therapeutic strategies. Stromal cell-derived factor 1α (SDF-1α) and its receptor CXCR4 have been implicated as regulators of bone resorption and bone metastatic development, suggesting that agents able to suppress this signaling pathway may be used as pharmacological treatments. In this study we studied if two CXCR4 receptor antagonists, Plerixafor and CTE9908, may affect bone metastatic disease induced by Pca in preclinical experimental models METHODS To verify the hypothesis that CXCR4 inhibition affects Pca metastatic disease, selective CXCR4 compounds, Plerixafor, and CTE9908, were tested in preclinical models known to generate bone lesions. Additionally, the expression levels of CXCR4 and SDF-1α were analyzed in a number of human tissues derived from primary tumors, lymph-nodes and osseous metastases of Pca as well as in a wide panel of human Pca cell lines to non-tumorigenic and tumorigenic phenotype. RESULTS Bone-derived Pca cells express higher CXCR4 levels than other Pca cell lines. This differential expression was also observed in human Pca samples. In vitro evidence supports the hypothesis that factors produced by bone microenvironment differentially sustain CXCR4 and SDF1-α expression with respect to prostate microenvironment determining increased efficacy toward Plerixafor. The use of SDF1-α neutralizing antibodies greatly reduced the increase of CXCR4 expression in cells co-cultured with bone stromal cells (BMSc) and to a lesser extent in cells co-cultured with prostate stromal cells (HPSc) and partially reduced SDF1-α Plerixafor efficacy. SDF-1α induced tumor cell migration and invasion, as well as MMP-9, MMP-2, and uPA expression, which were reduced by Plerixafor. The incidence of X-ray detectable bone lesions was significantly reduced following Plerixafor and CTE9908 treatment Kaplan-Meier probability plots showed a significant improvement in the overall survival of mice treated with Plerixafor and CTE9908. The reduced intra-osseous growth of PC3 and PCb2 tumor cells after intratibial injection, as a result of Plerixafor and CTE9908 treatment, correlated with decreased osteolysis and serum levels of both mTRAP and type I collagen fragments (CTX), which were significantly lower with respect to controls. CONCLUSIONS Our report provides novel information on the potential activity of CXCR4 inhibitors on the formation and progression of Pca bone and soft tissue metastases and supports a biological rationale for the use of these inhibitors in men at high risk to develop clinically evident bone lesions.
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Affiliation(s)
- Giovanni Luca Gravina
- Division of Radiation Oncology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
- Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | - Andrea Mancini
- Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | - Paola Muzi
- Department of Life, Health and Environmental Sciences, L'Aquila, Italy
| | - Luca Ventura
- Pathology Department, San Salvatore Hospital L'Aquila, L'Aquila, Italy
| | - Leda Biordi
- Department of Biotechnological and Applied Clinical Sciences, Laboratory of Molecular Pathology, University of L'Aquila, L'Aquila, Italy
| | - Enrico Ricevuto
- Department of Biotechnological and Applied Clinical Sciences, Laboratory of Molecular Pathology, University of L'Aquila, L'Aquila, Italy
| | - Simona Pompili
- Department of Biotechnological and Applied Clinical Sciences, Laboratory of Human Anatomy, L'Aquila, Italy
| | - Claudia Mattei
- Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | - Ernesto Di Cesare
- Division of Radiation Oncology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
- Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | | | - Claudio Festuccia
- Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
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Yan M, Jurasz P. The role of platelets in the tumor microenvironment: From solid tumors to leukemia. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1863:392-400. [PMID: 26193075 DOI: 10.1016/j.bbamcr.2015.07.008] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/06/2015] [Accepted: 07/08/2015] [Indexed: 12/25/2022]
Abstract
Platelets are increasingly being recognized for promoting tumor growth and metastasis. Many cells derived from solid tumors have the ability to aggregate platelets, and this ability correlates with their metastatic potential. Over the past half century, our understanding of tumor cell-induced platelet aggregation (TCIPA) has grown beyond the simple concept that tumor cell-containing microthrombi mechanically embolize the microvasculature. Tumor cell-activated platelets secrete a multitude of factors that reciprocally act on tumor cells, as well as other cells within the tumor microenvironment; thus, affecting both parenychma and tumor-associated stroma. In this review, we summarize the current knowledge of tumor cell-platelet interactions and their influence on the tumor microenvironment, including how these interactions impact neoplastic epithelial cells, endothelial cells, pericytes, fibroblasts, immune cells, and early metastatic niches. In addition, we review the current knowledge of platelet-cancer cell interactions within hematological malignancies and speculate on how platelets may influence the leukemic microenvironment. This article is part of a Special Issue entitled: Tumor Microenvironment Regulation of Cancer Cell Survival, Metastasis, Inflammation, and Immune Surveillance edited by Peter Ruvolo and Gregg L. Semenza.
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Affiliation(s)
- MengJie Yan
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada; Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Paul Jurasz
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada; Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada; Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada; Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada.
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Amano H, Kato S, Ito Y, Eshima K, Ogawa F, Takahashi R, Sekiguchi K, Tamaki H, Sakagami H, Shibuya M, Majima M. The Role of Vascular Endothelial Growth Factor Receptor-1 Signaling in the Recovery from Ischemia. PLoS One 2015; 10:e0131445. [PMID: 26133989 PMCID: PMC4489890 DOI: 10.1371/journal.pone.0131445] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Accepted: 06/02/2015] [Indexed: 11/18/2022] Open
Abstract
Vascular endothelial growth factor (VEGF) is one of the most potent angiogenesis stimulators. VEGF binds to VEGF receptor 1 (VEGFR1), inducing angiogenesis through the receptor’s tyrosine kinase domain (TK), but the mechanism is not well understood. We investigated the role of VEGFR1 tyrosine kinase signaling in angiogenesis using the ischemic hind limb model. Relative to control mice, blood flow recovery was significantly impaired in mice treated with VEGFA-neutralizing antibody. VEGFR1 tyrosine kinase knockout mice (TK-/-) had delayed blood flow recovery from ischemia and impaired angiogenesis, and this phenotype was unaffected by treatment with a VEGFR2 inhibitor. Compared to wild type mice (WT), TK-/- mice had no change in the plasma level of VEGF, but the plasma levels of stromal-derived cell factor 1 (SDF-1) and stem cell factor, as well as the bone marrow (BM) level of pro-matrix metalloproteinase-9 (pro-MMP-9), were significantly reduced. The recruitment of cells expressing VEGFR1 and C-X-C chemokine receptor type 4 (CXCR4) into peripheral blood and ischemic muscles was also suppressed. Furthermore, WT transplanted with TK-/- BM significantly impaired blood flow recovery more than WT transplanted with WT BM. These results suggest that VEGFR1-TK signaling facilitates angiogenesis by recruiting CXCR4+VEGFR1+ cells from BM.
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Affiliation(s)
- Hideki Amano
- Departments of Pharmacology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Shintaro Kato
- Departments of Pharmacology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Yoshiya Ito
- Departments of Surgery, Kitasato University School of Medicine, Kanagawa, Japan
| | - Koji Eshima
- Departments of Immunology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Fumihiro Ogawa
- Departments of Pharmacology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Ryo Takahashi
- Departments of Pharmacology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Kazuki Sekiguchi
- Departments of Pharmacology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Hideaki Tamaki
- Departments of Anatomy, Kitasato University School of Medicine, Kanagawa, Japan
| | - Hiroyuki Sakagami
- Departments of Anatomy, Kitasato University School of Medicine, Kanagawa, Japan
| | - Masabumi Shibuya
- Gakubunkan Institute of Physiology and Medicine, Jobu University, Gunma, Japan
| | - Masataka Majima
- Departments of Pharmacology, Kitasato University School of Medicine, Kanagawa, Japan
- * E-mail: -.u.ac.jp
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The role of vascular endothelial growth factor receptor-1 signaling in compensatory contralateral lung growth following unilateral pneumonectomy. J Transl Med 2015; 95:456-68. [PMID: 25642830 DOI: 10.1038/labinvest.2014.159] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 10/31/2014] [Accepted: 12/02/2014] [Indexed: 01/09/2023] Open
Abstract
Compensatory lung growth models have been widely used to investigate alveolization because the remaining lung can be kept intact and volume loss can be controlled. Vascular endothelial growth factor (VEGF) plays an important role in blood formation during lung growth and repair, but the precise mechanisms involved are poorly understood; therefore, the aim of this study was to investigate the role of VEGF signaling in compensatory lung growth. After left pneumonectomy, the right lung weight was higher in VEGF transgenic mice than wild-type (WT) mice. Compensatory lung growth was suppressed significantly in mice injected with a VEGF neutralizing antibody and in VEGF receptor-1 tyrosine kinase-deficient mice (TK(-/-) mice). The mobilization of progenitor cells expressing VEGFR1(+) cells from bone marrow and the recruitment of these cells to lung tissue were also suppressed in the TK(-/-) mice. WT mice transplanted with bone marrow from TK(-/-)transgenic GFP(+) mice had significantly lower numbers of GFP(+)/aquaporin 5(+), GFP(+)/surfactant protein A(+), and GFP(+)/VEGFR1(+) cells than WT mice transplanted with bone marrow from WTGFP(+) mice. The GFP(+)/VEGFR1(+) cells also co-stained for aquaporin 5 and surfactant protein A. Overall, these results suggest that VEGF signaling contributes to compensatory lung growth by mobilizing VEGFR1(+) cells.
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Yokouchi H, Kanazawa K, Ishida T, Oizumi S, Shinagawa N, Sukoh N, Harada M, Ogura S, Munakata M, Dosaka-Akita H, Isobe H, Nishimura M. Cyclooxygenase-2 inhibitors for non-small-cell lung cancer: A phase II trial and literature review. Mol Clin Oncol 2014; 2:744-750. [PMID: 25054040 DOI: 10.3892/mco.2014.319] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 05/13/2014] [Indexed: 11/06/2022] Open
Abstract
Several preclinical and clinical studies have demonstrated that cyclooxygenase-2 (COX-2) inhibitors are efficient for the treatment of non-small-cell lung cancer (NSCLC). However, two recent phase III clinical trials using COX-2 inhibitors in combination with platinum-based chemotherapy failed to demonstrate a survival benefit. Thus, validation and discussion regarding the usefulness of COX-2 inhibitors for patients with NSCLC are required. We conducted a prospective trial using COX-2 inhibitors for the treatment of 50 NSCLC patients accrued between April, 2005 and July, 2006. Patients with untreated advanced NSCLC received oral meloxicam (150 mg daily), carboplatin (area under the curve = 5 mg/ml × min on day 1) and docetaxel (60 mg/m2 on day 1) every 3 weeks. The primary endpoint was response rate. The response and disease control rates were 36.0 and 76.0%, respectively. The time-to-progression (TTP) and overall survival (OS) were 5.7 months [95% confidence interval (CI): 4.6-6.7] and 13.7 months (95% CI: 11.4-15.9), respectively. The 1-year survival ratio was 56.0%. Grade 3 neuropathy was observed in only 1 patient. We performed tumor immunohistochemistry for COX-2 and p27 and investigated the correlation between their expression and clinical outcome. COX-2 expression in the tumor tended to correlate with a higher response rate (50.0% in the high- and 18.2% in the low-COX-2 group; P=0.092). Based on our results and previous reports, various trial designs, such as the prospective use of COX-2 inhibitors only for patients with COX-2-positive NSCLC, including the exploratory analysis of biomarkers associated with the COX-2 pathway, may be worth further consideration.
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Affiliation(s)
- Hiroshi Yokouchi
- Department of Pulmonary Medicine, Fukushima Medical University, Fukushima 960-1295, Japan ; First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Hokkaido 060-8648, Japan
| | - Kenya Kanazawa
- Department of Pulmonary Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Takashi Ishida
- Department of Pulmonary Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Satoshi Oizumi
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Hokkaido 060-8648, Japan
| | - Naofumi Shinagawa
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Hokkaido 060-8648, Japan
| | - Noriaki Sukoh
- Department of Respiratory Medicine, National Hospital Organization Hokkaido Cancer Center, Sapporo, Hokkaido 003-0804, Japan
| | - Masao Harada
- Department of Respiratory Medicine, National Hospital Organization Hokkaido Cancer Center, Sapporo, Hokkaido 003-0804, Japan
| | - Shigeaki Ogura
- Department of Respiratory Disease, Sapporo City General Hospital, Sapporo, Hokkaido 060-8604, Japan
| | - Mitsuru Munakata
- Department of Pulmonary Medicine, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Hirotoshi Dosaka-Akita
- Department of Medical Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido 060-8648, Japan
| | - Hiroshi Isobe
- Department of Medical Oncology, KKR Sapporo Medical Center, Sapporo, Hokkaido 062-0931, Japan
| | - Masaharu Nishimura
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Hokkaido 060-8648, Japan
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28
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Mezouar S, Darbousset R, Dignat-George F, Panicot-Dubois L, Dubois C. Inhibition of platelet activation prevents the P-selectin and integrin-dependent accumulation of cancer cell microparticles and reduces tumor growth and metastasis in vivo. Int J Cancer 2014; 136:462-75. [PMID: 24889539 DOI: 10.1002/ijc.28997] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 05/12/2014] [Accepted: 05/20/2014] [Indexed: 12/16/2022]
Abstract
Venous thromboembolism constitutes one of the main causes of death during the progression of a cancer. We previously demonstrated that tissue factor (TF)-bearing cancer cell-derived microparticles accumulate at the site of injury in mice developing a pancreatic cancer. The presence of these microparticles at the site of thrombosis correlates with the size of the platelet-rich thrombus. The objective of this study was to determine the involvement of TF expressed by cancer cell-derived microparticles on thrombosis associated with cancer. We observed that pancreatic cancer cell derived microparticles expressed TF, its inhibitor tissue factor pathway inhibitor (TFPI) as well as the integrins αvβ1 and αvβ3. In mice bearing a tumor under-expressing TF, a significant decrease in circulating TF activity associated with an increase bleeding time and a 100-fold diminished fibrin generation and platelet accumulation at the site of injury were observed. This was mainly due to the interaction of circulating cancer cell-derived microparticles expressing TFPI with activated platelets and fibrinogen. In an ectopic model of cancer, treatment of mice with Clopidogrel, an anti-platelet drug, decreased the size of the tumors and restored hemostasis by preventing the accumulation of cancer cell-derived microparticles at the site of thrombosis. In a syngeneic orthotopic model of pancreatic cancer Clopidogrel also significantly inhibited the development of metastases. Together, these results indicate that an anti-platelet strategy may efficiently treat thrombosis associated with cancer and reduce the progression of pancreatic cancer in mice.
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Affiliation(s)
- Soraya Mezouar
- Aix Marseille Université, INSERM UMR-S1076, 13385, Marseille, France
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29
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Sato T, Amano H, Ito Y, Eshima K, Minamino T, Ae T, Katada C, Ohno T, Hosono K, Suzuki T, Shibuya M, Koizumi W, Majima M. Vascular endothelial growth factor receptor 1 signaling facilitates gastric ulcer healing and angiogenesis through the upregulation of epidermal growth factor expression on VEGFR1+CXCR4 + cells recruited from bone marrow. J Gastroenterol 2014; 49:455-69. [PMID: 23982810 DOI: 10.1007/s00535-013-0869-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 08/01/2013] [Indexed: 02/04/2023]
Abstract
BACKGROUND Angiogenesis is essential for gastric ulcer healing. Recent results suggest that vascular endothelial growth factor receptor 1 (VEGFR1), which binds to VEGF, promotes angiogenesis. In the present study, we investigated the role of VEGFR1 signaling in gastric ulcer healing and angiogenesis. METHODS Gastric ulcers were induced by serosal application of 100 % acetic acid in wild-type (WT) and tyrosine kinase-deficient VEGFR1 mice (VEGFR1 TK(-/-)). Bone marrow transplantation into irradiated WT mice was carried out using bone marrow cells isolated from WT and VEGFR1 TK(-/-) mice. RESULTS Ulcer healing was delayed in VEGFR1 TK(-/-) mice compared to WT mice and this was accompanied by decreased angiogenesis, as evidenced by reduced mRNA levels of CD31 and decreased microvessel density. Recruitment of cells expressing VEGFR1 and C-X-C chemokine receptor type 4 (CXCR4) was suppressed and epidermal growth factor (EGF) expression in ulcer granulation tissue was attenuated. Treatment of WT mice with neutralizing antibodies against VEGF or CXCR4 also delayed ulcer healing. In WT mice transplanted with bone marrow cells from VEGFR1 TK(-/-) mice, ulcer healing and angiogenesis were suppressed, and this was associated with reduced recruitment of bone marrow cells to ulcer granulation tissue. VEGFR1 TK(-/-) bone marrow chimeras also exhibited downregulation of EGF expression on CXCR4(+)VEGFR1(+) cells recruited from the bone marrow into ulcer lesions. CONCLUSION VEGFR1-mediated signaling plays a critical role in gastric ulcer healing and angiogenesis through enhanced EGF expression on VEGFR1(+)CXCR4(+) cells recruited from the bone marrow into ulcer granulation tissue.
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Affiliation(s)
- Takehito Sato
- Department of Pharmacology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan
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Takahashi R, Amano H, Satoh T, Tabata K, Ikeda M, Kitasato H, Akira S, Iwamura M, Majima M. Roles of microsomal prostaglandin E synthase-1 in lung metastasis formation in prostate cancer RM9 cells. Biomed Pharmacother 2014; 68:71-7. [DOI: 10.1016/j.biopha.2013.10.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 10/24/2013] [Indexed: 12/20/2022] Open
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Cheema AK, Suman S, Kaur P, Singh R, Fornace AJ, Datta K. Long-term differential changes in mouse intestinal metabolomics after γ and heavy ion radiation exposure. PLoS One 2014; 9:e87079. [PMID: 24475228 PMCID: PMC3903607 DOI: 10.1371/journal.pone.0087079] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 12/16/2013] [Indexed: 01/26/2023] Open
Abstract
Tissue consequences of radiation exposure are dependent on radiation quality and high linear energy transfer (high-LET) radiation, such as heavy ions in space is known to deposit higher energy in tissues and cause greater damage than low-LET γ radiation. While radiation exposure has been linked to intestinal pathologies, there are very few studies on long-term effects of radiation, fewer involved a therapeutically relevant γ radiation dose, and none explored persistent tissue metabolomic alterations after heavy ion space radiation exposure. Using a metabolomics approach, we report long-term metabolomic markers of radiation injury and perturbation of signaling pathways linked to metabolic alterations in mice after heavy ion or γ radiation exposure. Intestinal tissues (C57BL/6J, female, 6 to 8 wks) were analyzed using ultra performance liquid chromatography coupled with electrospray quadrupole time-of-flight mass spectrometry (UPLC-QToF-MS) two months after 2 Gy γ radiation and results were compared to an equitoxic 56Fe (1.6 Gy) radiation dose. The biological relevance of the metabolites was determined using Ingenuity Pathway Analysis, immunoblots, and immunohistochemistry. Metabolic profile analysis showed radiation-type-dependent spatial separation of the groups. Decreased adenine and guanosine and increased inosine and uridine suggested perturbed nucleotide metabolism. While both the radiation types affected amino acid metabolism, the 56Fe radiation preferentially altered dipeptide metabolism. Furthermore, 56Fe radiation caused upregulation of ‘prostanoid biosynthesis’ and ‘eicosanoid signaling’, which are interlinked events related to cellular inflammation and have implications for nutrient absorption and inflammatory bowel disease during space missions and after radiotherapy. In conclusion, our data showed for the first time that metabolomics can not only be used to distinguish between heavy ion and γ radiation exposures, but also as a radiation-risk assessment tool for intestinal pathologies through identification of biomarkers persisting long after exposure.
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Affiliation(s)
- Amrita K. Cheema
- Department of Biochemistry and Molecular & Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C., United States of America
| | - Shubhankar Suman
- Department of Biochemistry and Molecular & Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C., United States of America
| | - Prabhjit Kaur
- Department of Biochemistry and Molecular & Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C., United States of America
| | - Rajbir Singh
- Department of Biochemistry and Molecular & Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C., United States of America
| | - Albert J. Fornace
- Department of Biochemistry and Molecular & Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C., United States of America
- Center of Excellence In Genomic Medicine Research (CEGMR), King Abdulaziz University, Jeddah, Saudi Arabia
| | - Kamal Datta
- Department of Biochemistry and Molecular & Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C., United States of America
- * E-mail:
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Dovizio M, Maier TJ, Alberti S, Di Francesco L, Marcantoni E, Münch G, John CM, Suess B, Sgambato A, Steinhilber D, Patrignani P. Pharmacological inhibition of platelet-tumor cell cross-talk prevents platelet-induced overexpression of cyclooxygenase-2 in HT29 human colon carcinoma cells. Mol Pharmacol 2013; 84:25-40. [PMID: 23580446 PMCID: PMC11037430 DOI: 10.1124/mol.113.084988] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 04/11/2013] [Indexed: 04/26/2024] Open
Abstract
Cyclooxygenase (COX)-2-derived prostanoids can influence several processes that are linked to carcinogenesis. We aimed to address the hypothesis that platelets contribute to aberrant COX-2 expression in HT29 colon carcinoma cells and to reveal the role of platelet-induced COX-2 on the expression of proteins involved in malignancy and marker genes of epithelial-mesenchymal transition (EMT). Human platelets cocultured with HT29 cells rapidly adhered to cancer cells and induced COX-2 mRNA expression, but not protein synthesis, which required the late release of platelet-derived growth factor and COX-2 mRNA stabilization. Platelet-induced COX-2-dependent prostaglandin E2 (PGE2) synthesis in HT29 cells was involved in the downregulation of p21(WAF1/CIP1) and the upregulation of cyclinB1 since these effects were prevented by rofecoxib (a selective COX-2 inhibitor) and rescued by exogenous PGE2. Galectin-3, which is highly expressed in HT29 cells, is unique among galectins because it contains a collagen-like domain. Thus, we studied the role of galectin-3 and platelet collagen receptors in platelet-induced COX-2 overexpression. Inhibitors of galectin-3 function (β-lactose, a dominant-negative form of galectin-3, Gal-3C, and anti-galectin-3 antibody M3/38) or collagen receptor-mediated platelet adhesion (revacept, a dimeric platelet collagen receptor GPVI-Fc) prevented aberrant COX-2 expression. Inhibition of platelet-cancer cell interaction by revacept was more effective than rofecoxib in preventing platelet-induced mRNA changes of EMT markers, suggesting that direct cell-cell contact and aberrant COX-2 expression synergistically induced gene expression modifications associated with EMT. In conclusion, our findings provide the rationale for testing blockers of collagen binding sites, such as revacept, and galectin-3 inhibitors in the prevention of colon cancer metastasis in animal models, followed by studies in patients.
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Affiliation(s)
- Melania Dovizio
- Department of Neuroscience and Imaging and Center of Excellence on Aging (CeSI), G. d'Annunzio University, Via dei Vestini, 31, 66100 Chieti, Italy
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NSAID, aspirin delays gastric ulcer healing with reduced accumulation of CXCR4(+)VEGFR1(+) cells to the ulcer granulation tissues. Biomed Pharmacother 2013; 67:607-13. [PMID: 23809370 DOI: 10.1016/j.biopha.2013.01.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Accepted: 01/24/2013] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Ulcer healing is a complex process, which involves cell migration, proliferation, angiogenesis and re-epithelialization. Several growth factors have been implicated in this process but the precise mechanism is not well understood. This study examined the involvement of VEGFR1 signaling in the gastric ulcer healing. METHODS Gastric ulcers were induced by the serosal application of 100% acetic acid, and the areas of the ulcers were measured thereafter. RESULTS The healing of acetic acid induced ulcers and the progenitor cells expressing CXCR4(+)VEGFR1(+) cell were significantly delayed in NSAID treated mice. The areas of the ulcer was significantly suppressed in tyrosine kinase-deficient VEGFR1 mice (VEGFR1TKKO) compared with wild type (WT) mice. The plasma level of SDF-1 and stem cell factor (SCF) and bone marrow level of pro-matrix metallopeptidase 9 (pro-MMP-9) were significantly reduced in VEGFR1TKKO mice. In VEGFR1 TKKOmice, the progenitor cells expressing CXCR4(+)VEGFR1(+) cell from bone marrow and the recruitment of these cells in healing ulcer were suppressed. Furthermore, VEGFR1 TKKO mice treated with NSAID did not suppress gastric ulcer healing compared to vehicle mice. These results suggested that NSAID suppressed VEGFR1 TK signaling plays a critical role in ulcer healing through mobilization of CXCR4(+)VEGFR1(+) cells. CONCLUSION VEGFR1 signaling is required for healing of NSAID induced gastric ulcer and angiogenesis with increased recruitment of CXCR4(+)VEGFR1(+) cells to the ulcerative lesion.
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Martinez P, Vergoten G, Colomb F, Bobowski M, Steenackers A, Carpentier M, Allain F, Delannoy P, Julien S. Over-sulfated glycosaminoglycans are alternative selectin ligands: insights into molecular interactions and possible role in breast cancer metastasis. Clin Exp Metastasis 2013; 30:919-31. [PMID: 23739843 DOI: 10.1007/s10585-013-9592-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 05/23/2013] [Indexed: 12/15/2022]
Abstract
Distant metastasis account for about 90 % of cancer associated deaths, and yet the oncology field is cruelly lacking tools to accurately predict and/or prevent metastasis. Distant metastasis occurs when circulating tumor cells interact with the endothelium of distant organs and extravasate from the blood vessel into the surrounding tissue. Selectins are a family of carbohydrate receptors well depicted for their role in tumor cells extravasation. They mediate primary interactions of cancer cells with endothelial cells, as well as secondary interactions with leucocytes and platelets, which are also promoting metastasis. The cancer associated carbohydrate antigen sialyl-Lewis x (sLe(x)) has been repeatedly shown to be involved, as selectin ligand, in these interactions. However, recent studies have highlighted that glycosaminoglycans (GAGs), another class of glycans, may also serve as ligands for selectins. We report herein that cancer-associated GAGs are differentially recognized by selectins according to their density of sulfation and the pH conditions of the binding. We also show that these parameters regulate platelets-cancer cells heterotypic aggregation, supporting the idea that GAGs may have pro-metastatic function. Combining our experimental results with in depth analyses of molecular dockings, we propose a model of GAG/selectin interactions robust enough to recapitulate the differential binding of selectins to GAGs, the competition between GAGs and sLe(x) for selectin binding and the effect of sub-physiological pH on GAGs affinities towards selectins. Altogether, our data suggest GAGs to be good ligands for selectins, potentially promoting distant metastasis in a complementary way to sLe(x).
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Affiliation(s)
- Pierre Martinez
- Unité de Glycobiologie Structurale et Fonctionnelle, Unité Mixte de Recherche 8576 du Centre National de la Recherche Scientifique, Institut Fédératif de Recherche 147, Université Lille Nord de France-Université des Sciences et Technologies, Bat C9 Université Lille 1, 59655, Villeneuve d'Ascq, France
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Amano H, Ito Y, Ogawa F, Eshima K, Suzuki T, Oba K, Matsui Y, Kato S, Fukui T, Nakamura M, Kitasato H, Fukamizu A, Majima M. Angiotensin II type 1A receptor signaling facilitates tumor metastasis formation through P-selectin-mediated interaction of tumor cells with platelets and endothelial cells. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 182:553-64. [PMID: 23219751 DOI: 10.1016/j.ajpath.2012.10.026] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Revised: 10/09/2012] [Accepted: 10/31/2012] [Indexed: 11/28/2022]
Abstract
Angiotensin II is involved in tumor growth; however, the precise mechanism is not known. Platelets also contribute to tumor growth, and angiotensin II type 1 receptor (AT1) is expressed on the platelet surface. We hypothesized that interaction of platelets with tumor cells through AT1 receptor signaling promotes tumor metastasis. B16F1 melanoma cells were intravenously injected into Agtr1a knockout mice (AT1a(-/-)) and wild-type littermates (WT); the AT1a(-/-) mice exhibited a reduction in lung colonies. Angiotensin II induced expression of P-selectin on platelets in WT but not in AT1a(-/-) mice. A selective P-selectin neutralizing antibody decreased lung colony numbers in WT but not in AT1a(-/-) mice. Levels of vascular endothelial growth factor (VEGF) and stromal cell-derived factor 1 (SDF-1) receptor in platelets at metastatic locus were lower in AT1a(-/-) mice. Treatment of neutralizing antibodies against VEGF and CXCR4 decreased lung colony numbers in WT but not in AT1a(-/-) mice. In AT1a(-/-) mice, and both mobilization of progenitor cells expressing CXCR4(+)VEGFR1(+) cells from bone marrow and their recruitment to lung tissues were suppressed. These results suggest that AT1A signaling plays a critical role in tumor metastasis through P-selectin-mediated interactions of platelets with tumor and endothelial cells and through the AT1A signaling-dependent production of VEGF and SDF-1, which may be involved in mobilization of CXCR4(+)VEGFR1(+) cells.
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Affiliation(s)
- Hideki Amano
- Department of Pharmacology, Kitasato University School of Medicine, Kanagawa 252-0374, Japan
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