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Sheng M, Sun R, Fu J, Lu G. The podoplanin-CLEC-2 interaction promotes platelet-mediated melanoma pulmonary metastasis. BMC Cancer 2024; 24:399. [PMID: 38561690 PMCID: PMC10983743 DOI: 10.1186/s12885-024-12194-w] [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: 03/08/2023] [Accepted: 03/27/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Podoplanin (PDPN) expressed on tumour cells interacts with platelet C-type lectin-like receptor 2 (CLEC-2). This study aimed to investigate the role of the PDPN-platelet CLEC-2 interaction in melanoma pulmonary metastasis. METHODS Murine melanoma B16-F0 cells, which have two populations that express podoplanin, were sorted by FACS with anti-podoplanin staining to obtain purified PDPN + and PDPN- B16-F0 cells. C57BL/6J mice transplanted with CLEC-2-deficient bone marrow cells were used for in vivo experiments. RESULTS The in vivo data showed that the number of metastatic lung nodules in WT mice injected with PDPN + cells was significantly higher than that in WT mice injected with PDPN- cells and in WT or CLEC-2 KO mice injected with PDPN- cells. In addition, our results revealed that the platelet Syk-dependent signalling pathway contributed to platelet aggregation and melanoma metastasis. CONCLUSIONS Our study indicates that the PDPN-CLEC-2 interaction promotes experimental pulmonary metastasis in a mouse melanoma model. Tumour cell-induced platelet aggregation mediated by the interaction between PDPN and CLEC-2 is a key factor in melanoma pulmonary metastasis.
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Affiliation(s)
- Minjia Sheng
- Reproductive Medicine Center, China-Japan Union Hospital, Jilin University, Changchun, China.
| | - Ran Sun
- Reproductive Medicine Center, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Jianxin Fu
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, 73104, Oklahoma City, OK, USA
- Central Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, 215006, Suzhou, Jiangsu, China
| | - Gao Lu
- Reproductive Medicine Center, China-Japan Union Hospital, Jilin University, Changchun, China
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2
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Interactions between Platelets and Tumor Microenvironment Components in Ovarian Cancer and Their Implications for Treatment and Clinical Outcomes. Cancers (Basel) 2023; 15:cancers15041282. [PMID: 36831623 PMCID: PMC9953912 DOI: 10.3390/cancers15041282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Platelets, the primary operatives of hemostasis that contribute to blood coagulation and wound healing after blood vessel injury, are also involved in pathological conditions, including cancer. Malignancy-associated thrombosis is common in ovarian cancer patients and is associated with poor clinical outcomes. Platelets extravasate into the tumor microenvironment in ovarian cancer and interact with cancer cells and non-cancerous elements. Ovarian cancer cells also activate platelets. The communication between activated platelets, cancer cells, and the tumor microenvironment is via various platelet membrane proteins or mediators released through degranulation or the secretion of microvesicles from platelets. These interactions trigger signaling cascades in tumors that promote ovarian cancer progression, metastasis, and neoangiogenesis. This review discusses how interactions between platelets, cancer cells, cancer stem cells, stromal cells, and the extracellular matrix in the tumor microenvironment influence ovarian cancer progression. It also presents novel potential therapeutic approaches toward this gynecological cancer.
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Abstract
The formation of new blood and lymphatic vessels is essential for both the development of multicellular organisms and (patho)physiological processes like wound repair and tumor growth. In the 1990s, circulating blood platelets were first postulated to regulate tumor angiogenesis by interacting with the endothelium and releasing angiogenic regulators from specialized α granules. Since then, many studies have validated the contributions of platelets to tumor angiogenesis, while uncovering novel roles for platelets in other angiogenic processes like wound resolution and retinal vascular disease. Although the majority of (lymph)angiogenesis occurs during development, platelets appear necessary for lymphatic but not vascular growth, implying their particular importance in pathological cases of adult angiogenesis. Future work is required to determine whether drugs targeting platelet production or function offer a clinically relevant tool to limit detrimental angiogenesis.
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Affiliation(s)
- Harvey G Roweth
- Hematology Division, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Elisabeth M Battinelli
- Hematology Division, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
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4
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Ghose D, Swain S, Patra CN, Jena BR, Rao MEB. Advancement and Applications of Platelet-inspired Nanoparticles: A Paradigm for Cancer Targeting. Curr Pharm Biotechnol 2023; 24:213-237. [PMID: 35352648 DOI: 10.2174/1389201023666220329111920] [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: 07/23/2021] [Revised: 12/16/2021] [Accepted: 12/28/2021] [Indexed: 11/22/2022]
Abstract
Platelet-inspired nanoparticles have ignited the possibility of new opportunities for producing similar biological particulates, such as structural cellular and vesicular components, as well as various viral forms, to improve biocompatible features that could improve the nature of biocompatible elements and enhance therapeutic efficacy. The simplicity and more effortless adaptability of such biomimetic techniques uplift the delivery of the carriers laden with cellular structures, which has created varied opportunities and scope of merits like; prolongation in circulation and alleviating immunogenicity improvement of the site-specific active targeting. Platelet-inspired nanoparticles or medicines are the most recent nanotechnology-based drug targeting systems used mainly to treat blood-related disorders, tumors, and cancer. The present review encompasses the current approach of platelet-inspired nanoparticles or medicines that have boosted the scientific community from versatile fields to advance biomedical sciences. Surprisingly, this knowledge has streamlined to development of newer diagnostic methods, imaging techniques, and novel nanocarriers, which might further help in the treatment protocol of the various diseased conditions. The review primarily focuses on the novel advancements and recent patents in nanoscience and nanomedicine that could be streamlined in the future for the management of progressive cancers and tumor targeting. Rigorous technological advancements like biomimetic stem cells, pH-sensitive drug delivery of nanoparticles, DNA origami devices, virosomes, nano cells like exosomes mimicking nanovesicles, DNA nanorobots, microbots, etc., can be implemented effectively for target-specific drug delivery.
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Affiliation(s)
- Debashish Ghose
- Department of Pharmaceutics, Roland Institute of Pharmaceutical Sciences, Berhampur, 760 010, Biju Patnaik University of Technology, Rourkela, Odisha-769015, India
| | - Suryakanta Swain
- Department of Pharmacy, School of Health Sciences, The Assam Kaziranga University, Koraikhowa, NH-37, Jorhat, 785006, Assam, India
| | - Chinam Niranjan Patra
- Department of Pharmaceutics, Roland Institute of Pharmaceutical Sciences, Berhampur, 760 010, Biju Patnaik University of Technology, Rourkela, Odisha-769015, India
| | - Bikash Ranjan Jena
- School of Pharmacy and Life Sciences, Centurion University of Technology and Management, Jatni, Bhubaneswar, 752050, Odisha, India
| | - Muddana Eswara Bhanoji Rao
- Calcutta Institute of Pharmaceutical Technology and AHS, Banitabla, Uluberia, Howrah, 711316, West Bengal, India
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5
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Bourne JH, Smith CW, Jooss NJ, Di Y, Brown HC, Montague SJ, Thomas MR, Poulter NS, Rayes J, Watson SP. CLEC-2 Supports Platelet Aggregation in Mouse but not Human Blood at Arterial Shear. Thromb Haemost 2022; 122:1988-2000. [PMID: 35817083 PMCID: PMC9718592 DOI: 10.1055/a-1896-6992] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 06/01/2022] [Indexed: 10/17/2022]
Abstract
C-type lectin-like receptor 2 (CLEC-2) is highly expressed on platelets and a subpopulation of myeloid cells, and is critical in lymphatic development. CLEC-2 has been shown to support thrombus formation at sites of inflammation, but to have a minor/negligible role in hemostasis. This identifies CLEC-2 as a promising therapeutic target in thromboinflammatory disorders, without hemostatic detriment. We utilized a GPIbα-Cre recombinase mouse for more restricted deletion of platelet-CLEC-2 than the previously used PF4-Cre mouse. clec1bfl/flGPIbα-Cre+ mice are born at a Mendelian ratio, with a mild reduction in platelet count, and present with reduced thrombus size post-FeCl3-induced thrombosis, compared to littermates. Antibody-mediated depletion of platelet count in C57BL/6 mice, to match clec1bfl/flGPIbα-Cre+ mice, revealed that the reduced thrombus size post-FeCl3-injury was due to the loss of CLEC-2, and not mild thrombocytopenia. Similarly, clec1bfl/flGPIbα-Cre+ mouse blood replenished with CLEC-2-deficient platelets ex vivo to match littermates had reduced aggregate formation when perfused over collagen at arterial flow rates. In contrast, platelet-rich thrombi formed following perfusion of human blood under flow conditions over collagen types I or III, atherosclerotic plaque, or inflammatory endothelial cells were unaltered in the presence of CLEC-2-blocking antibody, AYP1, or recombinant CLEC-2-Fc. The reduction in platelet aggregation observed in clec1bfl/flGPIbα-Cre+ mice during arterial thrombosis is mediated by the loss of CLEC-2 on mouse platelets. In contrast, CLEC-2 does not support thrombus generation on collagen, atherosclerotic plaque, or inflamed endothelial cells in human at arterial shear.
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Affiliation(s)
- Joshua H. Bourne
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Christopher W. Smith
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Natalie J. Jooss
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Ying Di
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Helena C. Brown
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center for Integrative and Translational Bioimaging, University of Würzburg, Würzburg, Germany.
| | - Samantha J. Montague
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Mark R. Thomas
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- UHB and SWBH NHS Trusts, Birmingham, United Kingdom
| | - Natalie S. Poulter
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, The Midlands, United Kingdom
| | - Julie Rayes
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, The Midlands, United Kingdom
| | - Steve P. Watson
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, The Midlands, United Kingdom
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6
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Kuszynski DS, Lauver DA. Pleiotropic effects of clopidogrel. Purinergic Signal 2022; 18:253-265. [PMID: 35678974 DOI: 10.1007/s11302-022-09876-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 05/26/2022] [Indexed: 01/04/2023] Open
Abstract
Clopidogrel is a widely prescribed prodrug with anti-thrombotic activity through irreversible inhibition of the P2Y12 receptor on platelets. It is FDA-approved for the clinical management of thrombotic diseases like unstable angina, myocardial infarction, stroke, and during percutaneous coronary interventions. Hepatic clopidogrel metabolism generates several distinct metabolites. Only one of these metabolites is responsible for inhibiting the platelet P2Y12 receptor. Importantly, various non-hemostatic effects of clopidogrel therapy have been described. These non-hemostatic effects are perhaps unsurprising, as P2Y12 receptor expression has been reported in multiple tissues, including osteoblasts, leukocytes, as well as vascular endothelium and smooth muscle. While the "inactive" metabolites have been commonly thought to be biologically inert, recent findings have uncovered P2Y12 receptor-independent effects of clopidogrel treatment that may be mediated by understudied metabolites. In this review, we summarize both the P2Y12 receptor-mediated and non-P2Y12 receptor-mediated effects of clopidogrel and its metabolites in various tissues.
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Affiliation(s)
- Dawn S Kuszynski
- Department of Pharmacology and Toxicology, College of Veterinary Medicine, Michigan State University, 1355 Bogue Street, B336 Life Science, East Lansing, MI, USA.,Institute of Integrative Toxicology, Michigan State University, East Lansing, MI, USA
| | - D Adam Lauver
- Department of Pharmacology and Toxicology, College of Veterinary Medicine, Michigan State University, 1355 Bogue Street, B336 Life Science, East Lansing, MI, USA.
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7
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Mezei T, Bőde I, Tenke P, Jósa V, Merkel K, Szilasi Z, Tordai A, Máthé D, Baranyai Z. The Correlation Between Platelet Count and Survival in Prostate Cancer. Res Rep Urol 2022; 14:193-202. [PMID: 35572814 PMCID: PMC9092472 DOI: 10.2147/rru.s359715] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 04/16/2022] [Indexed: 12/15/2022] Open
Abstract
Purpose A number of studies have confirmed that elevated platelet count accompanying various solid tumours is associated with worse survival. However, only meagre data are available on the relationship between thrombocytosis and survival in prostate cancer. Methods We conducted a retrospective analysis on clinical-pathological data accumulated from 316 patients during on average 51 months of follow-up after laparoscopic prostatectomy performed for prostate cancer. We analyzed the relationship between platelet count, risk factors, prostate-specific antigen (PSA) and cancer stage with use the Tumor, Node, Metastase system (TNM), as well as surgical margin, and prognosis. Results Thrombocytosis occurred in only one out of the 316 patients. The multivariate Cox proportional hazard model showed that preoperative PSA, risk group, preoperative haemoglobin level, and surgical margin status were significant, independent predictors of biochemical progression-free survival. By contrast, age at diagnosis and thrombocytosis had no such predictive value. Conclusion We could not demonstrate an association between elevated platelet count and worse survival in our study population of patients with prostate cancer.
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Affiliation(s)
- Tünde Mezei
- Department of Urology, Jahn Ferenc South-Pest Hospital, Budapest, Hungary
- Correspondence: Tünde Mezei, Jahn Ferenc South-Pest Hospital, Department of Urology, Budapest, Hungary, Köves str 1, Budapest, 1204, Hungary, Tel +3620/2013038, Email
| | - Imre Bőde
- Department of Urology, Jahn Ferenc South-Pest Hospital, Budapest, Hungary
| | - Péter Tenke
- Department of Urology, Jahn Ferenc South-Pest Hospital, Budapest, Hungary
| | - Valéria Jósa
- Department of Otorhinolaryngology and Head and Neck Surgery, Jahn Ferenc South-Pest Hospital, Budapest, Hungary
| | | | - Zsuzsanna Szilasi
- Department of Otorhinolaryngology and Head and Neck Surgery, HDF Medical Centre, Budapest, Hungary
| | - Attila Tordai
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Zsolt Baranyai
- Semmelweis University, Department of Transplantation and Surgery, Budapest, Hungary
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8
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Kumode T, Tanaka H, Esipinoza JL, Rai S, Taniguchi Y, Fujiwara R, Sano K, Serizawa K, Iwata Y, Morita Y, Matsumura I. C-type lectin-like receptor 2 specifies a functionally distinct subpopulation within phenotypically defined hematopoietic stem cell population that contribute to emergent megakaryopoiesis. Int J Hematol 2022; 115:310-321. [PMID: 35106701 DOI: 10.1007/s12185-021-03220-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/08/2021] [Accepted: 09/08/2021] [Indexed: 10/19/2022]
Abstract
C-type lectin-like receptor 2 (CLEC-2) expressed on megakaryocytes plays important roles in megakaryopoiesis. We found that CLEC-2 was expressed in about 20% of phenotypical long-term hematopoietic stem cells (LT-HSCs), which expressed lower levels of HSC-specific genes and produced larger amounts of megakaryocyte-related molecules than CLEC-2low LT-HSCs. Although CLEC-2high LT-HSCs had immature clonogenic activity, cultured CLEC-2high LT-HSCs preferentially differentiated into megakaryocytes. CLEC-2high HSCs yielded 6.8 times more megakaryocyte progenitors (MkPs) and 6.0 times more platelets 2 weeks and 1 week after transplantation compared with CLEC-2low LT-HSCs. However, platelet yield from CLEC-2high HSCs gradually declined with the loss of MkPs, while CLEC-2low HSCs self-renewed long-term, indicating that CLEC-2high LT-HSCs mainly contribute to early megakaryopoiesis. Treatment with pI:C and LPS increased the proportion of CLEC-2high LT-HSCs within LT-HSCs. Almost all CLEC-2low LT-HSCs were in the G0 phase and barely responded to pI:C. In contrast, 54% of CLEC-2high LT-HSCs were in G0, and pI:C treatment obliged CLEC-2high LT-HSCs to enter the cell cycle and differentiate into megakaryocytes, indicating that CLEC-2high LT-HSCs are primed for cell cycle entry and rapidly yield platelets in response to inflammatory stress. In conclusion, CLEC-2high LT-HSCs appear to act as a reserve for emergent platelet production under stress conditions.
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Affiliation(s)
- Takahiro Kumode
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Hirokazu Tanaka
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan.
| | - Jorge Luis Esipinoza
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Shinya Rai
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Yasuhiro Taniguchi
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Ryosuke Fujiwara
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Keigo Sano
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Kentaro Serizawa
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Yoshio Iwata
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Yasuyoshi Morita
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
| | - Itaru Matsumura
- Department of Hematology and Rheumatology, Faculty of Medicine, Kindai University, 377-2, Ohno-higashi, Osaka-sayama, Osaka, Japan
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9
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Amer S, Nabil M, Negm M. Expression of Podoplanin in Hepatocellular Carcinoma in a Sample of Egyptian Population – Immunohistopathological Study. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.8460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Hepatocellular carcinoma (HCC) is a highly incident malignancy with a dreadful prognosis. It evolves through a multistep process, with a contribution from different stromal cells like cancer associated fibroblasts. Podoplanin is a glycoprotein that influences epithelial mesenchymal interplay facilitating the tumor invasion.
AIM: The aim of the study was to evaluate the immunohistochemical expression of Podoplanin in HCC in cancer associated fibroblasts (CAFs) and malignant hepatocytes as well as assessing the lymphovascular density, and correlating them with the clinicopathological parameters.
METHODS: Sixty formalin-fixed paraffin-embedded HCC tissue blocks were retrieved from the pathology Department of the National Hepatology and Tropical Medicine Research Institute and Kasr Al-aini Hospital during the period of January 2012 till December 2019. The specimens were obtained through partial or total hepatectomy inclusion criteria included HCC cases obtained through resection type biopsy and those having no history of pre-operative cancer therapy, while cases with insufficient data, core biopsy, and marked necrosis were excluded from the study. Tumor tissue blocks were immunostained for Podoplanin and its expression was interpreted in lymphatic vessels, CAFs, and malignant hepatocytes.
RESULTS: Podoplanin expression in CAFs and malignant hepatocytes was detected in the majority of HCC cases (81.7%) and (88.3%), respectively. The malignant hepatocytes showed increased expression of Grade 1 immunostaining (36.7%). High lymphovascular density was detected over the majority of the cases (73.3%). Podoplanin expression was significantly correlated with higher mean age, male gender, presence of viral infection, cirrhosis, and higher tumor grade. Unifocal tumor mass, tumor size <5 cm, and presence of invasion showed a significant correlation with Podoplanin in malignant hepatocytes and CAFs for the formers and the later, respectively.
CONCLUSION: Podoplanin is highly expressed in HCC, which could be used as a prognostic marker for lymphangiogenesis. Furthermore, within the malignant hepatocytes and CAFs suggesting a role in hepatocellular tumorigenesis. Podoplanin targeted therapy can be investigated to slow down the tumor progression and metastasis.
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10
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Meng D, Luo M, Liu B. The Role of CLEC-2 and Its Ligands in Thromboinflammation. Front Immunol 2021; 12:688643. [PMID: 34177942 PMCID: PMC8220156 DOI: 10.3389/fimmu.2021.688643] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/24/2021] [Indexed: 12/17/2022] Open
Abstract
C-type lectin-like receptor 2 (CLEC-2, also known as CLEC-1b) is expressed on platelets, Kupffer cells and other immune cells, and binds to various ligands including the mucin-like protein podoplanin (PDPN). The role of CLEC-2 in infection and immunity has become increasingly evident in recent years. CLEC-2 is involved in platelet activation, tumor cell metastasis, separation of blood/lymphatic vessels, and cerebrovascular patterning during embryonic development. In this review, we have discussed the role of CLEC-2 in thromboinflammation, and focused on the recent research.
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Affiliation(s)
- Danyang Meng
- Department of Neurology, Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Man Luo
- Department of Neurology, Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Beibei Liu
- Department of Central Laboratory, Affiliated Hospital of Jiaxing University, Jiaxing, China
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11
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Dymicka-Piekarska V, Koper-Lenkiewicz OM, Zińczuk J, Kratz E, Kamińska J. Inflammatory cell-associated tumors. Not only macrophages (TAMs), fibroblasts (TAFs) and neutrophils (TANs) can infiltrate the tumor microenvironment. The unique role of tumor associated platelets (TAPs). Cancer Immunol Immunother 2021; 70:1497-1510. [PMID: 33146401 PMCID: PMC8139882 DOI: 10.1007/s00262-020-02758-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 10/15/2020] [Indexed: 12/13/2022]
Abstract
It is well known that various inflammatory cells infiltrate cancer cells. Next to TAMs (tumor-associated macrophages), TAFs (tumor-associated fibroblasts) and TANs (tumor-associated neutrophils) also platelets form the tumor microenvironment. Taking into account the role of platelets in the development of cancer, we have decided to introduce a new term: tumor associated platelets-TAPs. To the best of our knowledge, thus far this terminology has not been employed by anyone. Platelets are the first to appear at the site of the inflammatory process that accompanies cancer development. Within the first few hours from the start of the colonization of cancer cells platelet-tumor aggregates are responsible for neutrophils recruitment, and further release a number of factors associated with tumor growth, metastasis and neoangiogenesis. On the other hand, it also has been indicated that factors delivered from platelets can induce a cytotoxic effect on the proliferating neoplastic cells, and even enhance apoptosis. Undoubtedly, TAPs' role seems to be more complex when compared to tumor associated neutrophils and macrophages, which do not allow for their division into TAP P1 and TAP P2, as in the case of TANs and TAMs. In this review we discuss the role of TAPs as an important element of tumor invasiveness and as a potentially new therapeutic target to prevent cancer development. Nevertheless, better exploring the interactions between platelets and tumor cells could help in the formulation of new therapeutic goals that support or improve the effectiveness of cancer treatment.
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Affiliation(s)
- Violetta Dymicka-Piekarska
- Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, Waszyngtona 15A, 15-269 Bialystok, Poland
| | - Olga M. Koper-Lenkiewicz
- Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, Waszyngtona 15A, 15-269 Bialystok, Poland
| | - Justyna Zińczuk
- Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, Waszyngtona 15A, 15-269 Bialystok, Poland
| | - Ewa Kratz
- Department of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wrocław, Poland
| | - Joanna Kamińska
- Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, Waszyngtona 15A, 15-269 Bialystok, Poland
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12
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Introduction to a review series on platelets and cancer. Blood 2021; 137:3151-3152. [PMID: 33940613 DOI: 10.1182/blood.2020010237] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 04/30/2021] [Indexed: 12/14/2022] Open
Abstract
Platelets are critical for hemostasis and thrombosis, but recent research highlights their role in many other processes, including inflammation, wound healing, and lymphangiogenesis. Edited by José López, this series focuses on the emerging role of platelets in cancer, influencing tumor growth and metastasis, immune evasion, and tumor angiogenesis. The reviews present the current understanding of mutual cross talk between platelets and tumors, communication mediated by RNA transfer and extracellular vesicles, and the potential of antiplatelet agents for cancer treatment.
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13
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Ukaji T, Takemoto A, Shibata H, Kakino M, Takagi S, Katayama R, Fujita N. Novel knock-in mouse model for the evaluation of the therapeutic efficacy and toxicity of human podoplanin-targeting agents. Cancer Sci 2021; 112:2299-2313. [PMID: 33735501 PMCID: PMC8177788 DOI: 10.1111/cas.14891] [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: 01/24/2021] [Revised: 03/14/2021] [Accepted: 03/16/2021] [Indexed: 01/19/2023] Open
Abstract
Podoplanin is a key molecule for enhancing tumor‐induced platelet aggregation. Podoplanin interacts with CLEC‐2 on platelets via PLatelet Aggregation–inducing domains (PLAGs). Among our generated antibodies, those targeting the fourth PLAG domain (PLAG4) strongly suppress podoplanin–CLEC‐2 binding and podoplanin‐expressing tumor growth and metastasis. We previously performed a single‐dose toxicity study of PLAG4‐targeting anti‐podoplanin–neutralizing antibodies and found no acute toxicity in cynomolgus monkeys. To confirm the therapeutic efficacy and toxicity of podoplanin‐targeting antibodies, a syngeneic mouse model that enables repeated dose toxicity tests is needed. Replacement of mouse PLAG1‐PLAG4 domains with human homologous domains drastically decreased the platelet‐aggregating activity. Therefore, we searched the critical domain of the platelet‐aggregating activity in mouse podoplanin and found that the mouse PLAG4 domain played a critical role in platelet aggregation, similar to the human PLAG4 domain. Human/mouse chimeric podoplanin, in which a limited region containing mouse PLAG4 was replaced with human homologous region, exhibited a similar platelet‐aggregating activity to wild‐type mouse podoplanin. Thus, we generated knock‐in mice with human/mouse chimeric podoplanin expression (PdpnKI/KI mice). Our previously established PLAG4‐targeting antibodies could suppress human/mouse chimeric podoplanin–mediated platelet aggregation and tumor growth in PdpnKI/KI mice. Repeated treatment of PdpnKI/KI mice with antibody‐dependent cell‐mediated cytotoxicity activity–possessing PG4D2 antibody did not result in toxicity or changes in hematological and biochemical parameters. Our results suggest that anti‐podoplanin–neutralizing antibodies could be used safely as novel anti‐tumor agents. Our generated PdpnKI/KI mice are useful for investigating the efficacy and toxicity of human podoplanin–targeting drugs.
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Affiliation(s)
- Takao Ukaji
- Division of Experimental Chemotherapy, The Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Ai Takemoto
- Division of Experimental Chemotherapy, The Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Harumi Shibata
- Division of Clinical Chemotherapy, The Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | | | - Satoshi Takagi
- Division of Experimental Chemotherapy, The Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Ryohei Katayama
- Division of Experimental Chemotherapy, The Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Naoya Fujita
- Division of Clinical Chemotherapy, The Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan.,The Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
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14
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Meng D, Ma X, Li H, Wu X, Cao Y, Miao Z, Zhang X. A Role of the Podoplanin-CLEC-2 Axis in Promoting Inflammatory Response After Ischemic Stroke in Mice. Neurotox Res 2021; 39:477-488. [PMID: 33165736 DOI: 10.1007/s12640-020-00295-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/15/2020] [Accepted: 10/07/2020] [Indexed: 12/13/2022]
Abstract
C-type lectin-like receptor 2 (CLEC-2) is a platelet surface-activating receptor with the prominent involvement in platelet activation, which was found to be associated with the progression and prognosis of acute ischemic stroke patients. Although podoplanin is the only known endogenous ligand for CLEC-2, the role of podoplanin/CLEC-2 in cerebral ischemia injury was unclear. In this study, we examined their role by using a mouse middle cerebral artery occlusion (MCAO) model. The expression of CLEC-2 and podoplanin increased after ischemia/reperfusion (I/R) injury, peaked at 24 h, and then decreased gradually. Podoplanin and CLEC-2 co-localized mainly in the ischemia/reperfusion cortex and expressed on neurons and microglia. Anti-podoplanin antibody pretreatment reduced cerebral infarct volume from 52.67 ± 4.67 to 34.08 ± 6.04% (P < 0.05) and attenuated the neurological deficits during acute stage and recovery stage. Moreover, a significant decrease of IL-18 and IL-1β was observed in the mice pretreated with the anti-podoplanin antibody. Our results demonstrate that the podoplanin-CLEC-2 axis might play an important role in cerebral ischemia/reperfusion injury in mice by promoting inflammatory reactions.
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Affiliation(s)
- Danyang Meng
- Department of Neurology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, China
- Institute of Neuroscience, Soochow University, 199 Ren-Ai Road, Suzhou, 215123, China
| | - Xiaohua Ma
- Institute of Neuroscience, Soochow University, 199 Ren-Ai Road, Suzhou, 215123, China
| | - Hui Li
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China
| | - Xuechun Wu
- Department of Neurology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, China
| | - Yongjun Cao
- Department of Neurology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, China
| | - Zhigang Miao
- Institute of Neuroscience, Soochow University, 199 Ren-Ai Road, Suzhou, 215123, China.
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Soochow University, Suzhou, 215123, Jiangsu,, China.
| | - Xia Zhang
- Department of Neurology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, China.
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15
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Josefsson EC, Vainchenker W, James C. Regulation of Platelet Production and Life Span: Role of Bcl-xL and Potential Implications for Human Platelet Diseases. Int J Mol Sci 2020; 21:ijms21207591. [PMID: 33066573 PMCID: PMC7589436 DOI: 10.3390/ijms21207591] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 01/14/2023] Open
Abstract
Blood platelets have important roles in haemostasis, where they quickly stop bleeding in response to vascular damage. They have also recognised functions in thrombosis, immunity, antimicrobal defense, cancer growth and metastasis, tumour angiogenesis, lymphangiogenesis, inflammatory diseases, wound healing, liver regeneration and neurodegeneration. Their brief life span in circulation is strictly controlled by intrinsic apoptosis, where the prosurvival Bcl-2 family protein, Bcl-xL, has a major role. Blood platelets are produced by large polyploid precursor cells, megakaryocytes, residing mainly in the bone marrow. Together with Mcl-1, Bcl-xL regulates megakaryocyte survival. This review describes megakaryocyte maturation and survival, platelet production, platelet life span and diseases of abnormal platelet number with a focus on the role of Bcl-xL during these processes.
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Affiliation(s)
- Emma C Josefsson
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC 3052, Australia
| | - William Vainchenker
- University Paris-Saclay, INSERM UMR 1270, Gustave Roussy, 94800 Villejuif, France
| | - Chloe James
- University of Bordeaux, INSERM U1034, Biology of Cardiovascular Diseases, 33600 Pessac, France
- Laboratory of Hematology, Bordeaux University Hospital Center, Haut-Leveque Hospital, 33604 Pessac, France
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16
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Haining EJ, Lowe KL, Wichaiyo S, Kataru RP, Nagy Z, Kavanagh DP, Lax S, Di Y, Nieswandt B, Ho-Tin-Noé B, Mehrara BJ, Senis YA, Rayes J, Watson SP. Lymphatic blood filling in CLEC-2-deficient mouse models. Platelets 2020; 32:352-367. [PMID: 32129691 PMCID: PMC8443399 DOI: 10.1080/09537104.2020.1734784] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C-type lectin-like receptor 2 (CLEC-2) is considered as a potential drug target in settings of wound healing, inflammation, and infection. A potential barrier to this is evidence that CLEC-2 and its ligand podoplanin play a critical role in preventing lymphatic vessel blood filling in mice throughout life. In this study, this aspect of CLEC-2/podoplanin function is investigated in more detail using new and established mouse models of CLEC-2 and podoplanin deficiency, and models of acute and chronic vascular remodeling. We report that CLEC-2 expression on platelets is not required to maintain a barrier between the blood and lymphatic systems in unchallenged mice, post-development. However, under certain conditions of chronic vascular remodeling, such as during tumorigenesis, deficiency in CLEC-2 can lead to lymphatic vessel blood filling. These data provide a new understanding of the function of CLEC-2 in adult mice and confirm the essential nature of CLEC-2-driven platelet activation in vascular developmental programs. This work expands our understanding of how lymphatic blood filling is prevented by CLEC-2-dependent platelet function and provides a context for the development of safe targeting strategies for CLEC-2 and podoplanin.
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Affiliation(s)
- Elizabeth J Haining
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Kate L Lowe
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Surasak Wichaiyo
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.,Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Raghu P Kataru
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Zoltan Nagy
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Dean Pj Kavanagh
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Sian Lax
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Ying Di
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Bernhard Nieswandt
- Rudolf Virchow Center for Experimental Biomedicine and Institute of Experimental Biomedicine, University of Würzburg and University Hospital of Würzburg, Würzburg, Germany
| | - Benoît Ho-Tin-Noé
- Institut National de la Santé et de la Recherche Médicale, UMR_S1148, Université Paris Diderot, Sorbonne Paris Cité, Hôpital Bichat, Paris, France
| | - Babak J Mehrara
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yotis A Senis
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Julie Rayes
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.,Centre of Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, The Midlands, UK
| | - Steve P Watson
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.,Centre of Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, The Midlands, UK
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17
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Xu M, Wang X, Pan Y, Zhao X, Yan B, Ruan C, Xia L, Zhao Y. Blocking podoplanin suppresses growth and pulmonary metastasis of human malignant melanoma. BMC Cancer 2019; 19:599. [PMID: 31208371 PMCID: PMC6580467 DOI: 10.1186/s12885-019-5808-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 06/06/2019] [Indexed: 11/29/2022] Open
Abstract
Background Podoplanin (PDPN), a transmembrane O-glycoprotein, is up-regulated in many tumors and is involved in tumor metastasis and malignant progression. In previous studies, we generated a functional blocking monoclonal antibody (mAb, SZ168) against the extracellular domain of human PDPN. This study is aimed to investigate whether blocking PDPN by SZ168 inhibits tumor growth and metastasis. Methods Malignant melanoma xenograft model by inoculating subcutaneously human malignant melanoma cell line C8161 into the back of BALB/c nude mice was used. Endogenous PDPN expression in C8161 cells and nasopharyngeal cancer cell line CNE-2 was detected using western blot and flow cytometry. Results SZ168 significantly inhibited C8161 or CNE-2 cell-induced platelet aggregation in a dose-dependent manner with a maximal inhibition of 73.9 ± 3.0% in C8161 cells or 77.1 ± 2.7% in CNE-2 cells. Moreover, SZ168 inhibited the growth and pulmonary metastasis of C8161cells in vivo. The number of lung metastatic foci in the SZ168-treated group was significantly decreased compared with that in the control mouse IgG group (1.61 ± 0.44 vs.3.83 ± 0.60, P < 0.01). Subcutaneous tumor volume, weight, and incidence were also significantly reduced in the SZ168-treated group compared to the control group (P < 0.05). Additionally, SZ168 recognized PDPN in immunohistochemical analyses of tumor tissue sections. Conclusions SZ168 blocks growth and pulmonary metastasis of human malignant melanoma by inhibiting the interaction between tumor PDPN and platelet CLEC-2 and therefore is a promising antibody for therapeutic development against malignant melanoma.
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Affiliation(s)
- Mengqiao Xu
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China
| | - Xia Wang
- The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215006, Jiangsu, China
| | | | - Xingpeng Zhao
- Clinical Laboratory Center, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, 471000, Henan, China
| | - Bin Yan
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China
| | - Changgeng Ruan
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China
| | - Lijun Xia
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China.,State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
| | - Yiming Zhao
- Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of the Ministry of Health, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China. .,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, 215006, Jiangsu, China.
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18
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Kuriri FA, O'Malley CJ, Jackson DE. Molecular mechanisms of immunoreceptors in platelets. Thromb Res 2019; 176:108-114. [DOI: 10.1016/j.thromres.2019.01.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 01/20/2019] [Accepted: 01/28/2019] [Indexed: 01/05/2023]
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19
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Podoplanin in Inflammation and Cancer. Int J Mol Sci 2019; 20:ijms20030707. [PMID: 30736372 PMCID: PMC6386838 DOI: 10.3390/ijms20030707] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 02/07/2023] Open
Abstract
Podoplanin is a small cell-surface mucin-like glycoprotein that plays a crucial role in the development of the alveoli, heart, and lymphatic vascular system. Emerging evidence indicates that it is also involved in the control of mammary stem-cell activity and biogenesis of platelets in the bone marrow, and exerts an important function in the immune response. Podoplanin expression is upregulated in different cell types, including fibroblasts, macrophages, T helper cells, and epithelial cells, during inflammation and cancer, where it plays important roles. Podoplanin is implicated in chronic inflammatory diseases, such as psoriasis, multiple sclerosis, and rheumatoid arthritis, promotes inflammation-driven and cancer-associated thrombosis, and stimulates cancer cell invasion and metastasis through a variety of strategies. To accomplish its biological functions, podoplanin must interact with other proteins located in the same cell or in neighbor cells. The binding of podoplanin to its ligands leads to modulation of signaling pathways that regulate proliferation, contractility, migration, epithelial⁻mesenchymal transition, and remodeling of the extracellular matrix. In this review, we describe the diverse roles of podoplanin in inflammation and cancer, depict the protein ligands of podoplanin identified so far, and discuss the mechanistic basis for the involvement of podoplanin in all these processes.
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20
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A safety study of newly generated anti-podoplanin-neutralizing antibody in cynomolgus monkey ( Macaca fascicularis). Oncotarget 2018; 9:33322-33336. [PMID: 30279963 PMCID: PMC6161800 DOI: 10.18632/oncotarget.26055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 08/16/2018] [Indexed: 11/25/2022] Open
Abstract
Hematogenous metastases are enhanced by platelet aggregation induced by tumor cell-platelet interaction. Podoplanin is a key molecule to enhance the platelet aggregation and interacts with C-type lectin-like receptor 2 (CLEC-2) on platelet via PLAG domains. Our previous reports have shown that blocking podoplanin binding to platelets by neutralizing antibody specific to PLAG4 domain strongly reduces hematogenous metastasis. However, podoplanin is expressed in a variety of normal tissues such as lymphatic vessels and the question remains whether treatment of tumors with anti-podoplanin neutralizing antibodies would be toxic. Monkeys are the most suitable species for that purpose. PLAG3 and PLAG4 domains had high homology among various monkey species and human. PLAG domain deleted mutants were indicated that monkey PLAG4 domain played a more crucial role in podoplanin-induced platelet aggregation than did the PLAG3 domain as in human. Moreover, newly established neutralizing antibodies (1F6, 2F7, and 3F4) targeting the monkey PLAG4 domain blocked interaction between monkey podoplanin and CLEC-2. Especially, the 2F7 neutralizing antibody strongly suppressed platelet aggregation and pulmonary metastasis. Furthermore, inhibiting podoplanin function with 2F7 neutralizing antibody exhibited no acute toxicity in cynomolgus monkeys. Our results suggested that targeting podoplanin with specific neutralizing antibodies may be an effective anticancer treatment.
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21
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Wojtukiewicz MZ, Hempel D, Sierko E, Tucker SC, Honn KV. Antiplatelet agents for cancer treatment: a real perspective or just an echo from the past? Cancer Metastasis Rev 2018; 36:305-329. [PMID: 28752248 PMCID: PMC5557869 DOI: 10.1007/s10555-017-9683-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The association between coagulation and cancer development has been observed for centuries. However, the connection between inflammation and malignancy is also well-recognized. The plethora of evidence indicates that among multiple hemostasis components, platelets play major roles in cancer progression by providing surface and granular contents for several interactions as well as behaving like immune cells. Therefore, the anticancer potential of anti-platelet therapy has been intensively investigated for many years. Anti-platelet agents may prevent cancer, decrease tumor growth, and metastatic potential, as well as improve survival of cancer patients. On the other hand, there are suggestions that antiplatelet treatment may promote solid tumor development in a phenomenon described as "cancers follow bleeding." The controversies around antiplatelet agents justify insight into the subject to establish what, if any, role platelet-directed therapy has in the continuum of anticancer management.
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Affiliation(s)
- Marek Z Wojtukiewicz
- Department of Oncology, Medical University of Bialystok, 12 Ogrodowa St., 15-025, Bialystok, Poland.
| | - Dominika Hempel
- Department of Radiotherapy, Comprehensive Cancer Center in Bialystok, Bialystok, Poland
| | - Ewa Sierko
- Department of Clinical Oncology, Comprehensive Cancer Center in Bialystok, Bialystok, Poland
| | - Stephanie C Tucker
- Department of Pathology-School of Medicine, Bioactive Lipids Research Program, Detroit, MI, 48202, USA
| | - Kenneth V Honn
- Department of Pathology-School of Medicine, Bioactive Lipids Research Program, Detroit, MI, 48202, USA.,Departments of Chemistry, Wayne State University, Detroit, MI, 48202, USA.,Department of Oncology, Karmanos Cancer Institute, Detroit, MI, 48202, USA
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22
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Denslow A, Świtalska M, Jarosz J, Papiernik D, Porshneva K, Nowak M, Wietrzyk J. Clopidogrel in a combined therapy with anticancer drugs-effect on tumor growth, metastasis, and treatment toxicity: Studies in animal models. PLoS One 2017; 12:e0188740. [PMID: 29206871 PMCID: PMC5716579 DOI: 10.1371/journal.pone.0188740] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 11/13/2017] [Indexed: 12/31/2022] Open
Abstract
Clopidogrel, a thienopyridine derivative with antiplatelet activity, is widely prescribed for patients with cardiovascular diseases. In addition to antiplatelet activity, antiplatelet agents possess anticancer and antimetastatic properties. Contrary to this, results of some studies have suggested that the use of clopidogrel and other thienopyridines accelerates the progression of breast, colorectal, and prostate cancer. Therefore, in this study, we aimed to evaluate the efficacy of clopidogrel and various anticancer agents as a combined treatment using mouse models of breast, colorectal, and prostate cancer. Metastatic dissemination, selected parameters of platelet morphology and biochemistry, as well as angiogenesis were assessed. In addition, body weight, blood morphology, and biochemistry were evaluated to test toxicity of the studied compounds. According to the results, clopidogrel increased antitumor and/or antimetastatic activity of chemotherapeutics such as 5-fluorouracil, cyclophosphamide, and mitoxantrone, whereas it decreased the anticancer activity of doxorubicin, cisplatin, and tamoxifen. The mechanisms of such divergent activities may be based on the modulation of tumor vasculature via factors, such as transforming growth factor β1 released from platelets. Moreover, clopidogrel increased the toxicity of docetaxel and protected against mitoxantrone-induced toxicity, which may be due to the modulation of hepatic enzymes and protection of the vasculature, respectively. These results demonstrate that antiplatelet agents can be useful but also dangerous in anticancer treatment and therefore use of thienopyridines in patients undergoing chemotherapy should be carefully evaluated.
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Affiliation(s)
- Agnieszka Denslow
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Marta Świtalska
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Joanna Jarosz
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Diana Papiernik
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Kseniia Porshneva
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Marcin Nowak
- Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | - Joanna Wietrzyk
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
- * E-mail:
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23
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Valenzuela CA, Quintanilla R, Moore-Carrasco R, Brown NE. The Potential Role of Senescence As a Modulator of Platelets and Tumorigenesis. Front Oncol 2017; 7:188. [PMID: 28894697 PMCID: PMC5581331 DOI: 10.3389/fonc.2017.00188] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/09/2017] [Indexed: 12/16/2022] Open
Abstract
In addition to thrombus formation, alterations in platelet function are frequently observed in cancer patients. Importantly, both thrombus and tumor formation are influenced by age, although the mechanisms through which physiological aging modulates these processes remain poorly understood. In this context, the potential effects of senescent cells on platelet function represent pathophysiological mechanisms that deserve further exploration. Cellular senescence has traditionally been viewed as a barrier to tumorigenesis. However, far from being passive bystanders, senescent cells are metabolically active and able to secrete a variety of soluble and insoluble factors. This feature, known as the senescence-associated secretory phenotype (SASP), may provide senescent cells with the capacity to modify the tissue environment and, paradoxically, promote proliferation and neoplastic transformation of neighboring cells. In fact, the SASP-dependent ability of senescent cells to enhance tumorigenesis has been confirmed in cellular systems involving epithelial cells and fibroblasts, leaving open the question as to whether similar interactions can be extended to other cellular contexts. In this review, we discuss the diverse functions of platelets in tumorigenesis and suggest the possibility that senescent cells might also influence tumorigenesis through their ability to modulate the functional status of platelets through the SASP.
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Affiliation(s)
| | - Ricardo Quintanilla
- Center for Medical Research, University of Talca Medical School, Talca, Chile
| | | | - Nelson E Brown
- Center for Medical Research, University of Talca Medical School, Talca, Chile
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24
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Cai D, Wu X, Hong T, Mao Y, Ge X, Hua D. CD61+ and CAF+ were found to be good prognosis factors for invasive breast cancer patients. Pathol Res Pract 2017; 213:1296-1301. [PMID: 28935175 DOI: 10.1016/j.prp.2017.06.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 06/01/2017] [Accepted: 06/24/2017] [Indexed: 11/18/2022]
Abstract
BACKGROUND During the epithelial tumor development process, changes in tumor cell genes are an important driving factor for tumorigenesis. Recently, however, studies have shown that the tumor microenvironment, especially for cancer-associated fibroblasts (CAFs) and the infiltration of platelets into tumors, plays an essential role in the progression of human malignant disease. METHODS In this study, we investigated the presence and prognostic role of podoplanin-expressing CAFs (CAF+), the infiltration of platelets into tumors (CD61+) and platelet count before surgery in a large sample of patients with breast cancer. Podoplanin expression and platelet infiltration were evaluated by immunohistochemistry in 164 patients with breast cancer. RESULTS Seventy-two patients (44%) showed CAF+, while fifty-seven patients (35%) showed CD61+. Several strong positive correlations were found, including CD61+ with blood platelet count before surgery (P=0.004), and CAF+ with CD61+ (P=0.048). Patients with CAF+, CD61+ or platelet count >280×109/L before surgery had a significantly shorter disease-free survival according to univariate analysis. Multivariable analysis showed that CAF+ was an independent prognostic factor (Hazard ratio=3.928; p=0.005). CONCLUSIONS CAF+ and CD61+ were found to be good negative prognosis factors for invasive breast cancer patients. CD61+ also had strong positive correlation with blood platelet count before surgery. These targets may be used as strategies for the treatment of breast cancer in the future.
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Affiliation(s)
- Dongyan Cai
- Department of Oncology, The Fourth People's Hospital of Wuxi, No. 200, Huihe road, Wuxi 214062, China
| | - Xiaohong Wu
- Department of Oncology, The Fourth People's Hospital of Wuxi, No. 200, Huihe road, Wuxi 214062, China
| | - Tingting Hong
- Department of Oncology, The Fourth People's Hospital of Wuxi, No. 200, Huihe road, Wuxi 214062, China
| | - Yong Mao
- Department of Oncology, The Fourth People's Hospital of Wuxi, No. 200, Huihe road, Wuxi 214062, China
| | - Xiaosong Ge
- Department of Oncology, The Fourth People's Hospital of Wuxi, No. 200, Huihe road, Wuxi 214062, China
| | - Dong Hua
- Department of Oncology, The Fourth People's Hospital of Wuxi, No. 200, Huihe road, Wuxi 214062, China.
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25
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Introduction to a series of reviews on clinical platelet disorders. Blood 2017; 129:2821-2822. [PMID: 28416504 DOI: 10.1182/blood-2017-04-773507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 04/17/2017] [Indexed: 12/24/2022] Open
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26
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Sekiguchi T, Takemoto A, Takagi S, Takatori K, Sato S, Takami M, Fujita N. Targeting a novel domain in podoplanin for inhibiting platelet-mediated tumor metastasis. Oncotarget 2016; 7:3934-46. [PMID: 26684030 PMCID: PMC4826181 DOI: 10.18632/oncotarget.6598] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 11/22/2015] [Indexed: 01/26/2023] Open
Abstract
Podoplanin/Aggrus is a sialoglycoprotein expressed in various cancers. We previously identified podoplanin as a key factor in tumor-induced platelet aggregation. Podoplanin-mediated platelet aggregation enhances tumor growth and metastasis by secreting growth factors and by forming tumor emboli in the microvasculature. Thus, precise analysis of the mechanisms of podoplanin-mediated platelet aggregation is critical for developing anti-tumor therapies. Here we report the discovery of a novel platelet aggregation-inducing domain, PLAG4 (81-EDLPT-85). PLAG4 has high homology to the previously reported PLAG3 and contributes to the binding of its platelet receptor CLEC-2. Mutant analyses indicated that PLAG4 exhibits a predominant platelet-aggregating function relative to PLAG3 and that conserved Glu81/Asp82/Thr85 residues in PLAG4 are indispensable for CLEC-2 binding. By establishing anti-PLAG4-neutralizing monoclonal antibodies, we confirmed its role in CLEC-2 binding, platelet aggregation, and tumor emboli formation. Our results suggest the requirement of simultaneous inhibition of PLAG3/4 for complete suppression of podoplanin-mediated tumor growth and metastasis.
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Affiliation(s)
- Takaya Sekiguchi
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Japan
| | - Ai Takemoto
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Satoshi Takagi
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Kazuki Takatori
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Japan
| | - Shigeo Sato
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Miho Takami
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Naoya Fujita
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Japan
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Shao M, Li L, Song S, Wu W, Peng P, Yang C, Zhang M, Duan F, Jia D, Zhang J, Wu H, Zhao R, Wang L, Ruan Y, Gu J. E3 ubiquitin ligase CHIP interacts with C-type lectin-like receptor CLEC-2 and promotes its ubiquitin-proteasome degradation. Cell Signal 2016; 28:1530-6. [PMID: 27443248 DOI: 10.1016/j.cellsig.2016.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 06/30/2016] [Accepted: 07/17/2016] [Indexed: 01/14/2023]
Abstract
C-type lectin-like receptor 2 (CLEC-2) was originally identified as a member of non-classical C-type lectin-like receptors in platelets and immune cells. Activation of CLEC-2 is involved in thrombus formation, lymphatic/blood vessel separation, platelet-mediated tumor metastasis and immune response. Nevertheless, the regulation of CLEC-2 expression is little understood. In this study, we identified that the C terminus of Hsc70-interacting protein (CHIP) interacted with CLEC-2 by mass spectrometry analysis, and CHIP decreased the protein expression of CLEC-2 through lysine-48-linked ubiquitination and proteasomal degradation. Deleted and point mutation also revealed that CHIP controlled CLEC-2 protein expression via both tetratricopeptide repeats (TPR) domain and Ubox domain in a HSP70/90-independent manner. Moreover, reduced CHIP expression was associated with decreased CLEC-2 polyubiquitination and increased CLEC-2 protein levels in PMA-induced differentiation of THP-1 monocytes into macrophages. These results indicate that CLEC-2 is the target substrate of E3 ubiquitin ligase CHIP, and suggest that the CHIP/CLEC-2 axis may play an important role in the modulation of immune response.
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Affiliation(s)
- Miaomiao Shao
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Lili Li
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Shushu Song
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Weicheng Wu
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Peike Peng
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Caiting Yang
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Mingming Zhang
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Fangfang Duan
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Dongwei Jia
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Jie Zhang
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Hao Wu
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Ran Zhao
- Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Lan Wang
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China.
| | - Yuanyuan Ruan
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China.
| | - Jianxin Gu
- Key Laboratory of Glycoconjugate Research Ministry of Public Health, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, PR China
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Karachaliou N, Pilotto S, Bria E, Rosell R. Platelets and their role in cancer evolution and immune system. Transl Lung Cancer Res 2016; 4:713-20. [PMID: 26798580 DOI: 10.3978/j.issn.2218-6751.2015.10.09] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Platelets are anucleate fragments formed from the cytoplasm of megakaryocytes and represent the smallest circulating hematopoietic cells. Thought for almost a century to possess solely hemostatic potentials, platelets actually play a much wider role in tissue regeneration and repair and interact intimately with tumor cells. On the one hand, tumor cells induce platelet aggregation, known to act as the trigger of cancer-associated thrombosis and on the other hand, platelets recruited to the tumor microenvironment interact directly with tumor cells favoring proliferation, and indirectly through the release of angiogenic and mitogenic proteins. Furthermore, platelets are immunosuppressive cells that protect metastatic cancer cells from surveillance by killer cells, nullifying the effects of immunotherapy.
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Affiliation(s)
- Niki Karachaliou
- 1 Instituto Oncológico Dr Rosell, Quiron-Dexeus University Hospital, Barcelona, Spain ; 2 Department of Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy ; 3 Pangaea Biotech, Barcelona, Spain ; 4 Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Spain ; 5 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Spain
| | - Sara Pilotto
- 1 Instituto Oncológico Dr Rosell, Quiron-Dexeus University Hospital, Barcelona, Spain ; 2 Department of Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy ; 3 Pangaea Biotech, Barcelona, Spain ; 4 Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Spain ; 5 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Spain
| | - Emilio Bria
- 1 Instituto Oncológico Dr Rosell, Quiron-Dexeus University Hospital, Barcelona, Spain ; 2 Department of Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy ; 3 Pangaea Biotech, Barcelona, Spain ; 4 Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Spain ; 5 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Spain
| | - Rafael Rosell
- 1 Instituto Oncológico Dr Rosell, Quiron-Dexeus University Hospital, Barcelona, Spain ; 2 Department of Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy ; 3 Pangaea Biotech, Barcelona, Spain ; 4 Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Spain ; 5 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Spain
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Yin H, Zhou H, Kang Y, Zhang X, Duan X, Alnabhan R, Liang S, Scott DA, Lamont RJ, Shang J, Wang H. Syk negatively regulates TLR4-mediated IFNβ and IL-10 production and promotes inflammatory responses in dendritic cells. Biochim Biophys Acta Gen Subj 2015; 1860:588-98. [PMID: 26708990 DOI: 10.1016/j.bbagen.2015.12.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 12/14/2015] [Accepted: 12/16/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND While Syk has been shown to associate with TLR4, the immune consequences of Syk-TLR interactions and related molecular mechanisms are unclear. METHODS Gain- and loss-of-function approaches were utilized to determine the regulatory function of Syk and elucidate the related molecular mechanisms in TLR4-mediated inflammatory responses. Cytokine production was measured by ELISA and phosphorylation of signaling molecules determined by Western blotting. RESULTS Syk deficiency in murine dendritic cells resulted in the enhancement of LPS-induced IFNβ and IL-10 but suppression of pro-inflammatory cytokines (TNFα, IL-6). Deficiency of Syk enhanced the activity of PI3K and elevated the phosphorylation of PI3K and Akt, which in turn, lead to the phospho-inactivation of the downstream, central gatekeeper of the innate response, GSK3β. Inhibition of PI3K or Akt abrogated the ability of Syk deficiency to enhance IFNβ and IL-10 in Syk deficient cells, confirmed by the overexpression of Akt (Myr-Akt) or constitutively active GSK3β (GSK3 S9A). Moreover, neither inhibition of PI3K-Akt signaling nor neutralization of de novo synthesized IFNβ could rescue TNFα and IL-6 production in LPS-stimulated Syk deficient cells. Syk deficiency resulted in decreased phosphorylation of IKKβ and the NF-κB p65 subunit, further suggesting a divergent influence of Syk on pro- and anti-inflammatory TLR responses. CONCLUSIONS Syk negatively regulates TLR4-mediated production of IFNβ and IL-10 and promotes inflammatory responses in dendritic cells through divergent regulation of downstream PI3K-Akt and NF-κB signaling pathways. GENERAL SIGNIFICANCE Syk may represent a novel target for manipulating the direction or intensity of the innate response, depending on clinical necessity.
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Affiliation(s)
- Hui Yin
- Department of Infectious Diseases, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, Henan 450001, China
| | - Huaxin Zhou
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Yi Kang
- Department of Infectious Diseases, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, Henan 450001, China
| | - Xiaoju Zhang
- Department of Infectious Diseases, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, Henan 450001, China
| | - Xiaoxian Duan
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Ridab Alnabhan
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Shuang Liang
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - David A Scott
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Richard J Lamont
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Jia Shang
- Department of Infectious Diseases, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, Henan 450001, China.
| | - Huizhi Wang
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA.
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30
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Lambert MP, Meng R, Xiao L, Harper DC, Marks MS, Kowalska AM, Poncz M. Intramedullary megakaryocytes internalize released platelet factor 4 and store it in alpha granules. J Thromb Haemost 2015; 13:1888-99. [PMID: 26256688 PMCID: PMC4638179 DOI: 10.1111/jth.13069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Indexed: 01/13/2023]
Abstract
BACKGROUND Megakaryocytes express and store platelet factor 4 (PF4) in alpha granules. In vivo, PF4 is a clinically relevant, negative regulator of megakaryopoiesis and hematopoietic stem cell replication. These findings would suggest a regulated source of free intramedullary PF4. OBJECTIVES Define the source of free intramedullary PF4 and its intramedullary life cycle. METHODS We interrogated both murine and human bone marrow-derived cells during megakaryopoiesis in vitro by using confocal microscopy and enzyme-linked immunosorbent assay. With immunohistochemistry, we examined in vivo free PF4 in murine bone marrow before and after radiation injury and in the setting of megakaryocytopenia and thrombocytopenia. RESULTS Exogenously added human PF4 is internalized by murine megakaryocytes. Human megakaryocytes similarly take up murine PF4 but not the related chemokine, platelet basic protein. Confocal microscopy shows that internalized PF4 colocalizes with endogenous PF4 in alpha granules and is available for release on thrombin stimulation. Immunohistochemistry shows free PF4 in the marrow, but not another alphagranule protein, von Willebrand factor. Free PF4 increases with radiation injury and decreases with megakaryocytopenia. Consistent with the known role of low-density lipoprotein receptor-related protein 1 in the negative paracrine effect of PF4 on megakaryopoiesis, PF4 internalization is at least partially low-density lipoprotein receptor-related protein 1 dependent. CONCLUSIONS PF4 has a complex intramedullary life cycle with important implications in megakaryopoiesis and hematopoietic stem cell replication not seen with other tested alpha granule proteins.
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Affiliation(s)
- Michele P. Lambert
- Department of Pediatrics Perelman School of Medicine, Univ. of Pennsylvania, Philadelphia, PA 19104
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104
| | - Ronghua Meng
- Departments of Pathology & Laboratory Medicine, and Physiology, Perelman School of Medicine, Univ. of Pennsylvania, Philadelphia, PA 19104
| | - Liqing Xiao
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104
| | - Dawn C. Harper
- Departments of Pathology & Laboratory Medicine, and Physiology, Perelman School of Medicine, Univ. of Pennsylvania, Philadelphia, PA 19104
- Department of Pathology & Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104
| | - Michael S. Marks
- Departments of Pathology & Laboratory Medicine, and Physiology, Perelman School of Medicine, Univ. of Pennsylvania, Philadelphia, PA 19104
- Department of Pathology & Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104
| | - Anna M. Kowalska
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104
- Institute of Medical Biology, Polish Academy of Science, Lodz, Poland
| | - Mortimer Poncz
- Department of Pediatrics Perelman School of Medicine, Univ. of Pennsylvania, Philadelphia, PA 19104
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104
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31
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Blazejczyk A, Papiernik D, Porshneva K, Sadowska J, Wietrzyk J. Endothelium and cancer metastasis: Perspectives for antimetastatic therapy. Pharmacol Rep 2015; 67:711-8. [DOI: 10.1016/j.pharep.2015.05.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 04/27/2015] [Accepted: 05/18/2015] [Indexed: 01/08/2023]
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Manne BK, Badolia R, Dangelmaier C, Eble JA, Ellmeier W, Kahn M, Kunapuli SP. Distinct pathways regulate Syk protein activation downstream of immune tyrosine activation motif (ITAM) and hemITAM receptors in platelets. J Biol Chem 2015; 290:11557-68. [PMID: 25767114 DOI: 10.1074/jbc.m114.629527] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Indexed: 11/06/2022] Open
Abstract
Tyrosine kinase pathways are known to play an important role in the activation of platelets. In particular, the GPVI and CLEC-2 receptors are known to activate Syk upon tyrosine phosphorylation of an immune tyrosine activation motif (ITAM) and hemITAM, respectively. However, unlike GPVI, the CLEC-2 receptor contains only one tyrosine motif in the intracellular domain. The mechanisms by which this receptor activates Syk are not completely understood. In this study, we identified a novel signaling mechanism in CLEC-2-mediated Syk activation. CLEC-2-mediated, but not GPVI-mediated, platelet activation and Syk phosphorylation were abolished by inhibition of PI3K, which demonstrates that PI3K regulates Syk downstream of CLEC-2. Ibrutinib, a Tec family kinase inhibitor, also completely abolished CLEC-2-mediated aggregation and Syk phosphorylation in human and murine platelets. Furthermore, embryos lacking both Btk and Tec exhibited cutaneous edema associated with blood-filled vessels in a typical lymphatic pattern similar to CLEC-2 or Syk-deficient embryos. Thus, our data show, for the first time, that PI3K and Tec family kinases play a crucial role in the regulation of platelet activation and Syk phosphorylation downstream of the CLEC-2 receptor.
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Affiliation(s)
- Bhanu Kanth Manne
- From the Department of Physiology, Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140
| | - Rachit Badolia
- From the Department of Physiology, Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140
| | - Carol Dangelmaier
- From the Department of Physiology, Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140
| | - Johannes A Eble
- the Institute for Physiological Chemistry and Pathobiochemistry, University of Münster, 48149 Münster, Germany
| | - Wilfried Ellmeier
- the Division of Immunobiology, Institution of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, A-1090 Vienna, Austria, and
| | - Mark Kahn
- the Department of Medicine and Division of Cardiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104-5159
| | - Satya P Kunapuli
- From the Department of Physiology, Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140,
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Manne BK, Badolia R, Dangelmaier CA, Kunapuli SP. C-type lectin like receptor 2 (CLEC-2) signals independently of lipid raft microdomains in platelets. Biochem Pharmacol 2014; 93:163-70. [PMID: 25462818 DOI: 10.1016/j.bcp.2014.11.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 11/05/2014] [Accepted: 11/12/2014] [Indexed: 10/24/2022]
Abstract
C-type lectin like receptor 2 (CLEC-2) has been reported to activate platelets through a lipid raft-dependent manner. Secreted ADP potentiates CLEC-2-mediated platelet aggregation. We have investigated whether the decrease in CLEC-2-mediated platelet aggregation, previously reported in platelets with disrupted rafts, is a result of the loss of agonist potentiation by ADP. We disrupted platelet lipid rafts with methyl-β-cyclodextrin (MβCD) and measured signaling events downstream of CLEC-2 activation. Lipid raft disruption decreases platelet aggregation induced by CLEC-2 agonists. The inhibition of platelet aggregation by the disruption of lipid rafts was rescued by the exogenous addition of epinephrine but not 2-methylthioadenosine diphosphate (2MeSADP), which suggests that lipid raft disruption effects P2Y12-mediated Gi activation but not Gz. Phosphorylation of Syk (Y525/526) and PLCγ2 (Y759), were not affected by raft disruption in CLEC-2 agonist-stimulated platelets. Furthermore, tyrosine phosphorylation of the CLEC-2 hemi-ITAM was not effected when MβCD disrupts lipid rafts. Lipid rafts do not directly contribute to CLEC-2 receptor activation in platelets. The effects of disruption of lipid rafts in in vitro assays can be attributed to inhibition of ADP feedback that potentiates CLEC-2 signaling.
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Affiliation(s)
- Bhanu Kanth Manne
- Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA; Sol Sherry Thrombosis Research Center and Temple University School of Medicine, Philadelphia, PA, USA
| | - Rachit Badolia
- Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA; Sol Sherry Thrombosis Research Center and Temple University School of Medicine, Philadelphia, PA, USA
| | - Carol A Dangelmaier
- Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA; Sol Sherry Thrombosis Research Center and Temple University School of Medicine, Philadelphia, PA, USA
| | - Satya P Kunapuli
- Department of Physiology, Temple University School of Medicine, Philadelphia, PA, USA; Sol Sherry Thrombosis Research Center and Temple University School of Medicine, Philadelphia, PA, USA.
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Duerschmied D, Bode C, Ahrens I. Immune functions of platelets. Thromb Haemost 2014; 112:678-91. [PMID: 25209670 DOI: 10.1160/th14-02-0146] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 09/03/2014] [Indexed: 01/12/2023]
Abstract
This review collects evidence about immune and inflammatory functions of platelets from a clinician's point of view. A focus on clinically relevant immune functions aims at stimulating further research, because the complexity of platelet immunity is incompletely understood and not yet translated into patient care. Platelets promote chronic inflammatory reactions (e.g. in atherosclerosis), modulate acute inflammatory disorders such as sepsis and other infections (participating in the host defense against pathogens), and contribute to exacerbations of autoimmune conditions (like asthma or arthritis). It would hence be obsolete to restrict a description of platelet functions to thrombosis and haemostasis--platelets clearly are the most abundant cells with immune functions in the circulation.
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Affiliation(s)
- Daniel Duerschmied
- Daniel Duerschmied, MD, Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany, Tel.: +49 761 207 34410, Fax: +49 761 270 37855, E-mail:
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Seretis C, Youssef H, Chapman M. Hypercoagulation in colorectal cancer: what can platelet indices tell us? Platelets 2014; 26:114-8. [PMID: 25192361 DOI: 10.3109/09537104.2014.894969] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Colorectal cancer, as all solid malignancies, is accompanied by changes in the haemostatic mechanism favoring the establishment of a thrombotic potential, with platelets playing a key-role in this framework; they further link colorectal cancer progression and hypercoagulation with the immune-response against the neoplastic spread. Under this rationale, various studies have assessed the use of platelet indices as prognostic markers of the biological behavior of colorectal cancer, demonstrating significant results. We herein attempt to summarize in a narrative and critical approach the relevant available data and the underlying pathophysiology, stressing the necessity of a more thorough understanding and future implementation of platelet indices in all stages of care we deliver to colorectal cancer patients.
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Affiliation(s)
- Charalampos Seretis
- Department of Colorectal Surgery, Good Hope Hospital, Heart of England NHS Foundation Trust , Birmingham , UK
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Abstract
The C-type lectin-like receptor CLEC-2 mediates platelet activation through a hem-immunoreceptor tyrosine-based activation motif (hemITAM). CLEC-2 initiates a Src- and Syk-dependent signaling cascade that is closely related to that of the 2 platelet ITAM receptors: glycoprotein (GP)VI and FcγRIIa. Activation of either of the ITAM receptors induces shedding of GPVI and proteolysis of the ITAM domain in FcγRIIa. In the present study, we generated monoclonal antibodies against human CLEC-2 and used these to measure CLEC-2 expression on resting and stimulated platelets and on other hematopoietic cells. We show that CLEC-2 is restricted to platelets with an average copy number of ∼2000 per cell and that activation of CLEC-2 induces proteolytic cleavage of GPVI and FcγRIIa but not of itself. We further show that CLEC-2 and GPVI are expressed on CD41+ microparticles in megakaryocyte cultures and in platelet-rich plasma, which are predominantly derived from megakaryocytes in healthy donors, whereas microparticles derived from activated platelets only express CLEC-2. Patients with rheumatoid arthritis, an inflammatory disease associated with increased microparticle production, had raised plasma levels of microparticles that expressed CLEC-2 but not GPVI. Thus, CLEC-2, unlike platelet ITAM receptors, is not regulated by proteolysis and can be used to monitor platelet-derived microparticles.
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37
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Abstract
In this issue of Blood, Bénézech and colleagues demonstrate a role for platelets beyond fetal development, to maintaining integrity of the adult lymphatic system.
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38
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Colmenero I, Hoeger P. Vascular tumours in infants. Part
II
: vascular tumours of intermediate dignity and malignant tumours. Br J Dermatol 2014; 171:474-84. [DOI: 10.1111/bjd.12835] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2013] [Indexed: 02/06/2023]
Affiliation(s)
- I. Colmenero
- Histopathology Department Birmingham Children's Hospital Birmingham U.K
| | - P.H. Hoeger
- Paediatric Dermatology Department Catholic Children's Hospital Wilhelmstift Hamburg Germany
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39
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Abstract
The significant role of platelets and P-selectin in assisting tumor cell metastasis to the lungs has been frequently reported and reviewed. However, evidence recently has come to light on other pro-metastatic mechanisms of platelets beyond that of tumor cell protection from immune cell attack and aiding extravasation, such as promoting epithelial to mesenchymal transition in tumor cells and conveying signals from the primary tumor to distant tissues that optimize conditions for metastasis. Moreover, the role of platelets and selectins in hematogenous metastasis to frequently targeted organs other than the lungs has been less well examined. This review aims to summarize the literature on the roles of platelets in all stages of the metastatic process and to examine the participation of platelets and selectins in hematogenous metastasis to the lungs, liver, bone, and brain. In the light of the available evidence, potential therapeutic avenues for the control of metastasis are also discussed.
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Affiliation(s)
- Lucy A Coupland
- Cancer & Vascular Biology Group, Department of Immuology, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia; Clinical Haematology Unit, The Canberra Hospital, Garran, ACT, Australia
| | - Christopher R Parish
- Cancer & Vascular Biology Group, Department of Immuology, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia.
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40
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Takagi S, Oh-hara T, Sato S, Gong B, Takami M, Fujita N. Expression of Aggrus/podoplanin in bladder cancer and its role in pulmonary metastasis. Int J Cancer 2013; 134:2605-14. [PMID: 24222607 PMCID: PMC4233981 DOI: 10.1002/ijc.28602] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/15/2013] [Accepted: 11/04/2013] [Indexed: 11/16/2022]
Abstract
Platelet aggregation-inducing factor Aggrus, also known as podoplanin, is associated with tumor malignancy by promoting hematogenous metastasis. Aggrus overexpression has been reported in some tumor tissues including lung, esophagus, head and neck and brain. We here found the frequent upregulation of aggrus mRNA in urinary bladder cancers using cancer tissue panels from various organs. Immunohistochemical analysis confirmed Aggrus protein expression in urinary bladder cancers and suggested a positive correlation between Aggrus expression and metastatic tendency in bladder cancers. Endogenous expression of Aggrus protein on the cell surface was found in the mouse bladder cancer MBT-2 cell line and human bladder cancer SCaBER cell lines. Knockdown of Aggrus expression in MBT-2 cells decreased their ability to induce platelet aggregation and form pulmonary metastasis in syngeneic mouse models. Knockdown of Aggrus expression in the human bladder cancer SCaBER cells also attenuated their ability to induce platelet aggregation and form pulmonary metastasis in mice. Moreover, pulmonary metastasis of SCaBER cells was prevented by prior administration of our generated anti-Aggrus neutralizing monoclonal antibodies by attenuating their retention in lung. These results indicate that Aggrus plays an important role in bladder cancer metastasis. Thus, anti-Aggrus neutralizing antibodies would be useful for the prevention of hematogenous metastasis of Aggrus-positive bladder cancer.
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Affiliation(s)
- Satoshi Takagi
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, Tokyo, Japan
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41
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Platelets promote tumor growth and metastasis via direct interaction between Aggrus/podoplanin and CLEC-2. PLoS One 2013; 8:e73609. [PMID: 23991201 PMCID: PMC3749157 DOI: 10.1371/journal.pone.0073609] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 07/20/2013] [Indexed: 12/18/2022] Open
Abstract
The platelet aggregation-inducing factor Aggrus, also known as podoplanin, is frequently upregulated in several types of tumors and enhances hematogenous metastasis by interacting with and activating the platelet receptor CLEC-2. Thus, Aggrus-CLEC-2 binding could be a therapeutic molecular mechanism for cancer therapy. We generated a new anti-human Aggrus monoclonal antibody, MS-1, that suppressed Aggrus-CLEC-2 binding, Aggrus-induced platelet aggregation, and Aggrus-mediated tumor metastasis. Interestingly, the MS-1 monoclonal antibody attenuated the growth of Aggrus-positive tumors in vivo. Moreover, the humanized chimeric MS-1 antibody, ChMS-1, also exhibited strong antitumor activity against Aggrus-positive lung squamous cell carcinoma xenografted into NOD-SCID mice compromising antibody-dependent cellular cytotoxic and complement-dependent cytotoxic activities. Because Aggrus knockdown suppressed platelet-induced proliferation in vitro and tumor growth of the lung squamous cell carcinoma in vivo, Aggrus may be involved in not only tumor metastasis but also tumor growth by promoting platelet-tumor interaction, platelet activation, and secretion of platelet-derived factors in vivo. Our results indicate that molecular target drugs inhibiting specific platelet-tumor interactions can be developed as antitumor drugs that suppress both metastasis and proliferation of tumors such as lung squamous cell carcinoma.
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42
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Schoppmann SF, Alidzanovic L, Schultheis A, Perkmann T, Brostjan C, Birner P. Thrombocytes Correlate with Lymphangiogenesis in Human Esophageal Cancer and Mediate Growth of Lymphatic Endothelial Cells In Vitro. PLoS One 2013; 8:e66941. [PMID: 23840559 PMCID: PMC3694157 DOI: 10.1371/journal.pone.0066941] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 05/13/2013] [Indexed: 01/28/2023] Open
Abstract
Recent data provide evidence for an important role of thrombocytes in lymphangiogenesis within human malignant disease. The aim of this study was to investigate the role of thrombocytes in lymphangiogenesis in human esophageal cancer. Perioperative peripheral blood platelet counts (PBPC) were evaluated retrospectively in 320 patients with esophageal cancer, comprising 184 adenocarcinomas (AC), and 136 squamous cell carcinomas (SCC). Data on lymphangiogenesis evaluated by anti-podoplanin immunostaining were available from previous studies, platelets within the tumor tissue were assessed by CD61 immunostaining. For in vitro studies, human lymphatic endothelial cells (LECs) were isolated and co-cultured with peripheral blood platelets. Stromal thrombocytic clusters (STC) were evident in 82 samples (25.6%), and vascular thrombocytic clusters (VTC) in 56 (17.5%). STC and VTC were associated with a significantly higher PBPC at investigation of all cases. The presence of STC was associated with higher lymphatic microvessel density (p<0.001), PBPC and STC were associated with lymphovascular invasion of tumor cells in a regression model. The presence of STCs was associated with shorter DFS of all patients (p = 0.036, Breslow test), and VTC with shorter DFS in in SCC (p = 0.025, Breslow test). In cell culture, LEC proliferation was enhanced by co-culture with human platelets in a dose- and time-dependent manner mediated by the release of PDGF-BB and VEGF-C. Platelets play an important role in lymphangiogenesis and lymphovascular invasion in esophageal cancer, influencing prognosis. So the disruption of signaling pathways between platelets, tumor cells and lymphatic endothelium might be of benefit for patients.
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Affiliation(s)
- Sebastian F. Schoppmann
- Department of Surgery, Medical University of Vienna, Vienna, Austria
- Comprehensive Cancer Center, Gastroesophageal Unit, Medical University of Vienna, Vienna, Austria
| | - Lejla Alidzanovic
- Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Andrea Schultheis
- Department of Pathology, Hospital Rudolfsstiftung, Vienna, Vienna, Austria
| | - Thomas Perkmann
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | | | - Peter Birner
- Department of Pathology, Medical University of Vienna, Vienna, Austria
- Comprehensive Cancer Center, Gastroesophageal Unit, Medical University of Vienna, Vienna, Austria
- * E-mail:
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43
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Choi I, Lee S, Hong YK. The new era of the lymphatic system: no longer secondary to the blood vascular system. Cold Spring Harb Perspect Med 2013; 2:a006445. [PMID: 22474611 DOI: 10.1101/cshperspect.a006445] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The blood and lymphatic systems are the two major circulatory systems in our body. Although the blood system has been studied extensively, the lymphatic system has received much less scientific and medical attention because of its elusive morphology and mysterious pathophysiology. However, a series of landmark discoveries made in the past decade has begun to change the previous misconception of the lymphatic system to be secondary to the more essential blood vascular system. In this article, we review the current understanding of the development and pathology of the lymphatic system. We hope to convince readers that the lymphatic system is no less essential than the blood circulatory system for human health and well-being.
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Affiliation(s)
- Inho Choi
- Department of Surgery, Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA
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44
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The snake venom rhodocytin from Calloselasma rhodostoma- a clinically important toxin and a useful experimental tool for studies of C-type lectin-like receptor 2 (CLEC-2). Toxins (Basel) 2013; 5:665-74. [PMID: 23594438 PMCID: PMC3705285 DOI: 10.3390/toxins5040665] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 04/01/2013] [Accepted: 04/07/2013] [Indexed: 12/21/2022] Open
Abstract
The snake venom, rhodocytin, from the Malayan viper, Calloselasma rhodostoma, and the endogenous podoplanin are identified as ligands for the C-type lectin-like receptor 2 (CLEC-2). The snakebites caused by Calloselasma rhodostoma cause a local reaction with swelling, bleeding and eventually necrosis, together with a systemic effect on blood coagulation with distant bleedings that can occur in many different organs. This clinical picture suggests that toxins in the venom have effects on endothelial cells and vessel permeability, extravasation and, possibly, activation of immunocompetent cells, as well as effects on platelets and the coagulation cascade. Based on the available biological studies, it seems likely that ligation of CLEC-2 contributes to local extravasation, inflammation and, possibly, local necrosis, due to microthrombi and ischemia, whereas other toxins may be more important for the distant hemorrhagic complications. However, the venom contains several toxins and both local, as well as distant, symptoms are probably complex reactions that cannot be explained by the effects of rhodocytin and CLEC-2 alone. The in vivo reactions to rhodocytin are thus examples of toxin-induced crosstalk between coagulation (platelets), endothelium and inflammation (immunocompetent cells). Very few studies have addressed this crosstalk as a part of the pathogenesis behind local and systemic reactions to Calloselasma rhodostoma bites. The author suggests that detailed biological studies based on an up-to-date methodology of local and systemic reactions to Calloselasma rhodostoma bites should be used as a hypothesis-generating basis for future functional studies of the CLEC-2 receptor. It will not be possible to study the effects of purified toxins in humans, but the development of animal models (e.g., cutaneous injections of rhodocytin to mimic snakebites) would supplement studies in humans.
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45
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Pula B, Witkiewicz W, Dziegiel P, Podhorska-Okolow M. Significance of podoplanin expression in cancer-associated fibroblasts: a comprehensive review. Int J Oncol 2013; 42:1849-57. [PMID: 23588876 DOI: 10.3892/ijo.2013.1887] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 03/14/2013] [Indexed: 11/05/2022] Open
Abstract
Cancer-associated fibroblasts (CAFs) are well-known to be part of the tumor microenvironment. This heterogeneous population of cells of the tumor microenvironment via secretion of various growth factors and cytokines was shown to contribute to increased cancer cell proliferation rate, migration, invasiveness and other key processes such as angiogenesis and lymphangiogenesis. Recent studies identified podoplanin as a marker of CAFs in various malignancies and its expression in these cells was shown to influence cancer progression. In some studies it yielded a prognostic impact on patient survival which was strongly dependent on the entity of the tumor. This review summarizes recent findings concerning the biology of podoplanin in cancer progression with particular emphasis on its expression in CAFs.
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Affiliation(s)
- Bartosz Pula
- Regional Specialist Hospital, Research and Development Center, 51-124 Wroclaw, Poland
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46
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Gachet C. Les mécanismes moléculaires de l’activation plaquettaire. BULLETIN DE L ACADEMIE NATIONALE DE MEDECINE 2013. [DOI: 10.1016/s0001-4079(19)31591-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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47
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Manne BK, Getz TM, Hughes CE, Alshehri O, Dangelmaier C, Naik UP, Watson SP, Kunapuli SP. Fucoidan is a novel platelet agonist for the C-type lectin-like receptor 2 (CLEC-2). J Biol Chem 2013; 288:7717-7726. [PMID: 23341451 DOI: 10.1074/jbc.m112.424473] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Fucoidan, a sulfated polysaccharide from Fucus vesiculosus, decreases bleeding time and clotting time in hemophilia, possibly through inhibition of tissue factor pathway inhibitor. However, its effect on platelets and the receptor by which fucoidan induces cellular processes has not been elucidated. In this study, we demonstrate that fucoidan induces platelet activation in a concentration-dependent manner. Fucoidan-induced platelet activation was completely abolished by the pan-Src family kinase (SFK) inhibitor, PP2, or when Syk is inhibited. PP2 abolished phosphorylations of Syk and Phospholipase C-γ2. Fucoidan-induced platelet activation had a lag phase, which is reminiscent of platelet activation by collagen and CLEC-2 receptor agonists. Platelet activation by fucoidan was only slightly inhibited in FcRγ-chain null mice, indicating that fucoidan was not acting primarily through GPVI receptor. On the other hand, fucoidan-induced platelet activation was inhibited in platelet-specific CLEC-2 knock-out murine platelets revealing CLEC-2 as a physiological target of fucoidan. Thus, our data show fucoidan as a novel CLEC-2 receptor agonist that activates platelets through a SFK-dependent signaling pathway. Furthermore, the efficacy of fucoidan in hemophilia raises the possibility that decreased bleeding times could be achieved through activation of platelets.
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Affiliation(s)
- Bhanu Kanth Manne
- Department of Physiology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140; Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140
| | - Todd M Getz
- Department of Physiology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140; Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140
| | - Craig E Hughes
- Centre for Cardiovascular Sciences, Institute for Biomedical Research, The College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Osama Alshehri
- Centre for Cardiovascular Sciences, Institute for Biomedical Research, The College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Carol Dangelmaier
- Department of Physiology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140; Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140
| | - Ulhas P Naik
- Cardiovascular Research Institute, University of Delaware, Newark, Delaware 19716
| | - Steve P Watson
- Centre for Cardiovascular Sciences, Institute for Biomedical Research, The College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Satya P Kunapuli
- Department of Physiology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140; Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140; Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140.
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48
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Fujita N, Takagi S. The impact of Aggrus/podoplanin on platelet aggregation and tumour metastasis. J Biochem 2012; 152:407-13. [PMID: 22992842 DOI: 10.1093/jb/mvs108] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Platelets are small blood components that play indispensable roles in the initial stages of coagulation. In addition to their role in haemostasis, platelets participate in inflammation and tissue regeneration under physiological conditions. Recent studies also revealed the role of platelets under pathological conditions, including the oncogenic process. Platelets enhance tumour growth and metastasis by secreting many growth factors and angiogenic factors or by forming a coat around tumour cells in the blood stream. We previously discovered Aggrus (also known as podoplanin, gp36, gp38P, T1alpha and OTS-8) expressed on tumour cell surfaces as a key molecule for tumour-induced platelet aggregation. Aggrus expression is increased in various malignant tumours such as squamous cell carcinomas, mesotheliomas, glioblastomas and osteosarcomas. Detailed analysis revealed that Aggrus contains three tandem repeats of platelet aggregation-stimulating (PLAG) domains that are associated with its platelet aggregation-inducing ability. PLAG domains of Aggrus are involved in binding to its platelet receptor, C-type lectin-like receptor 2 (CLEC-2). Neutralizing monoclonal antibodies that interfere with Aggrus-CLEC-2 binding attenuate Aggrus-induced platelet aggregation, tumour cell growth and metastasis formation. Aggrus is also expressed in advanced atherosclerotic lesions, suggesting that Aggrus is associated with thrombus formation on disrupted atherosclerotic lesions. These data suggest that Aggrus is a promising cell surface target for developing new therapies against cancer and thrombosis.
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Affiliation(s)
- Naoya Fujita
- Division of Experimental Chemotherapy, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Tokyo 135-8550, Japan.
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49
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Watabe T. Roles of transcriptional network during the formation of lymphatic vessels. J Biochem 2012; 152:213-20. [PMID: 22825883 DOI: 10.1093/jb/mvs081] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The lymphatic vascular system, also known as the second vascular system in vertebrates, plays crucial roles in various physiological and pathological processes. It participates in the maintenance of normal tissue fluid balance, trafficking of the immune cells and absorption of fatty acids in the gut. Furthermore, lymphatic system is associated with the pathogenesis of a number of diseases, including lymphedema, inflammatory diseases and tumour metastasis. Lymphatic vessels are comprised of lymphatic endothelial cells (LECs), which are differentiated from blood vascular endothelial cells. This review highlights recent advances in our understanding of the transcriptional control of LEC fate determination and reflects on efforts to understand the roles of transcriptional networks during this discrete developmental process.
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Affiliation(s)
- Tetsuro Watabe
- Department of Molecular Pathology, Graduate School of Medicine, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
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