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Xie Q, Zhou J, He C, Xu Y, Tao F, Hu M. Unlocking the intricacies: Exploring the complex interplay between platelets and ovarian cancer. Crit Rev Oncol Hematol 2024; 202:104465. [PMID: 39097249 DOI: 10.1016/j.critrevonc.2024.104465] [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: 06/07/2024] [Revised: 07/24/2024] [Accepted: 07/28/2024] [Indexed: 08/05/2024] Open
Abstract
Ovarian cancer, an aggressive malignancy of the female reproductive tract, is frequently linked to an elevated risk of thrombotic events. This association is manifested by a pronounced rise in platelet counts and activation levels. Current research firmly supports the pivotal role of platelets in the oncogenic processes of ovarian cancer, influencing tumor cell proliferation and metastasis. Platelets influence these processes through direct interactions with tumor cells or by secreting cytokines and growth factors that enhance tumor growth, angiogenesis, and metastasis. This review aims to thoroughly dissect the interactions between platelets and ovarian cancer cells, emphasizing their combined role in tumor progression and associated thrombotic events. Additionally, it summarizes therapeutic strategies targeting platelet-cancer interface which show significant promise. Such approaches could not only be effective in managing the primary ovarian tumor but also play a pivotal role in preventing metastasis and attenuating thrombotic complications associated with ovarian cancer.
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Affiliation(s)
- Qianxin Xie
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jie Zhou
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chaonan He
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ye Xu
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fangfang Tao
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China.
| | - Mengjiao Hu
- Department of Immunology and Microbiology, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China.
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2
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Roweth HG, Becker IC, Malloy MW, Clarke EM, Munn SA, Kumar PL, Aivasovsky I, Tray K, Schmaier AA, Battinelli EM. Platelet Angiopoietin-1 Protects Against Murine Models of Tumor Metastasis. Arterioscler Thromb Vasc Biol 2024; 44:2024-2037. [PMID: 39051116 PMCID: PMC11335083 DOI: 10.1161/atvbaha.124.321189] [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: 05/06/2024] [Accepted: 07/15/2024] [Indexed: 07/27/2024]
Abstract
BACKGROUND In addition to their fundamental roles in preserving vascular integrity, platelets also contribute to tumor angiogenesis and metastasis. However, despite being a reservoir for angiogenic and metastatic cytokines, platelets also harbor negative regulators of tumor progression. Angpt1 (angiopoietin-1) is a cytokine essential for developmental angiogenesis that also protects against tumor cell metastasis through an undefined mechanism. Although activated platelets release Angpt1 from α-granules into circulation, the contributions of platelet Angpt1 to tumor growth, angiogenesis, and metastasis have not been investigated. METHODS Using cytokine arrays and ELISAs, we first compared platelet Angpt1 levels in breast and melanoma mouse tumor models to tumor-free controls. We then assessed tumor growth and metastasis in mice lacking megakaryocyte and platelet Angpt1 (Angpt1Plt KO). The spontaneous metastasis of mammary-injected tumor cells to the lungs was quantified using RT-PCR (reverse transcription-polymerase chain reaction). The lung colonization of intravenously injected tumor cells and tumor cell extravasation were determined using fluorescent microscopy and flow cytometry. RESULTS Platelet Angpt1 is selectively upregulated in the PyMT (polyoma middle tumor antigen) breast cancer mouse model, and platelets are the principal source of Angpt1 in blood circulation. While primary tumor growth and angiogenesis were unaffected, Angpt1Plt KO mice had both increased spontaneous lung metastasis and tumor cell lung colonization following mammary or intravenous injection, respectively. Although platelet Angpt1 did not affect initial tumor cell entrapment in the lungs, Angpt1Plt KO mice had increased tumor cell retention and extravasation. Serum from Angpt1Plt KO mice increased endothelial permeability and reduced VE (vascular endothelial)-cadherin expression at endothelial junctions compared with serum from control mice (Angpt1WT). CONCLUSIONS Platelets provide an intravascular source of Angpt1 that restrains tumor metastasis by preserving the lung microvasculature to limit tumor cell extravasation.
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MESH Headings
- Animals
- Angiopoietin-1/genetics
- Angiopoietin-1/metabolism
- Angiopoietin-1/blood
- Blood Platelets/metabolism
- Blood Platelets/pathology
- Female
- Lung Neoplasms/secondary
- Lung Neoplasms/pathology
- Lung Neoplasms/genetics
- Lung Neoplasms/blood
- Lung Neoplasms/metabolism
- Lung Neoplasms/prevention & control
- Mice, Knockout
- Neovascularization, Pathologic
- Mice, Inbred C57BL
- Melanoma, Experimental/pathology
- Melanoma, Experimental/metabolism
- Melanoma, Experimental/blood supply
- Melanoma, Experimental/blood
- Melanoma, Experimental/secondary
- Melanoma, Experimental/genetics
- Cell Line, Tumor
- Mice
- Mammary Neoplasms, Experimental/pathology
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/metabolism
- Mammary Neoplasms, Experimental/blood
- Tumor Burden
- Disease Models, Animal
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Affiliation(s)
- Harvey G. Roweth
- Division of Hematology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (H.G.R., M.W.M., E.M.C., S.A.M., P.L.K., E.M.B.)
- Harvard Medical School, Boston, MA (H.G.R., I.C.B., P.L.K., I.A., A.A.S., E.M.B.)
| | - Isabelle C. Becker
- Harvard Medical School, Boston, MA (H.G.R., I.C.B., P.L.K., I.A., A.A.S., E.M.B.)
- Vascular Biology Program, Department of Surgery, Boston Children’s Hospital, MA (I.C.B.)
| | - Michael W. Malloy
- Division of Hematology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (H.G.R., M.W.M., E.M.C., S.A.M., P.L.K., E.M.B.)
| | - Emily M. Clarke
- Division of Hematology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (H.G.R., M.W.M., E.M.C., S.A.M., P.L.K., E.M.B.)
| | - Sophie A. Munn
- Division of Hematology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (H.G.R., M.W.M., E.M.C., S.A.M., P.L.K., E.M.B.)
| | - Priya L. Kumar
- Division of Hematology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (H.G.R., M.W.M., E.M.C., S.A.M., P.L.K., E.M.B.)
- Harvard Medical School, Boston, MA (H.G.R., I.C.B., P.L.K., I.A., A.A.S., E.M.B.)
| | - Ivan Aivasovsky
- Harvard Medical School, Boston, MA (H.G.R., I.C.B., P.L.K., I.A., A.A.S., E.M.B.)
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Boston, MA (I.A., K.T., A.A.S.)
| | - Kobe Tray
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Boston, MA (I.A., K.T., A.A.S.)
| | - Alec A. Schmaier
- Harvard Medical School, Boston, MA (H.G.R., I.C.B., P.L.K., I.A., A.A.S., E.M.B.)
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Boston, MA (I.A., K.T., A.A.S.)
| | - Elisabeth M. Battinelli
- Division of Hematology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (H.G.R., M.W.M., E.M.C., S.A.M., P.L.K., E.M.B.)
- Harvard Medical School, Boston, MA (H.G.R., I.C.B., P.L.K., I.A., A.A.S., E.M.B.)
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3
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Chen J, Liu S, Ruan Z, Wang K, Xi X, Mao J. Thrombotic events associated with immune checkpoint inhibitors and novel antithrombotic strategies to mitigate bleeding risk. Blood Rev 2024; 67:101220. [PMID: 38876840 DOI: 10.1016/j.blre.2024.101220] [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: 04/26/2024] [Revised: 05/23/2024] [Accepted: 06/05/2024] [Indexed: 06/16/2024]
Abstract
Although immunotherapy is expanding treatment options for cancer patients, the prognosis of advanced cancer remains poor, and these patients must contend with both cancers and cancer-related thrombotic events. In particular, immune checkpoint inhibitors are associated with an increased risk of atherosclerotic thrombotic events. Given the fundamental role of platelets in atherothrombosis, co-administration of antiplatelet agents is always indicated. Platelets are also involved in all steps of cancer progression. Classical antithrombotic drugs can cause inevitable hemorrhagic side effects due to blocking integrin β3 bidirectional signaling, which regulates simultaneously thrombosis and hemostasis. Meanwhile, many promising new targets are emerging with minimal bleeding risk and desirable anti-tumor effects. This review will focus on the issue of thrombosis during immune checkpoint inhibitor treatment and the role of platelet activation in cancer progression as well as explore the mechanisms by which novel antiplatelet therapies may exert both antithrombotic and antitumor effects without excessive bleeding risk.
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Affiliation(s)
- Jiayi Chen
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Shuang Liu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zheng Ruan
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Kankan Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; Sino-French Research Center for Life Sciences and Genomics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Xiaodong Xi
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Jianhua Mao
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, Collaborative Innovation Center of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
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4
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Schaubaecher JB, Smiljanov B, Haring F, Steiger K, Wu Z, Ugurluoglu A, Luft J, Ballke S, Mahameed S, Schneewind V, Hildinger J, Canis M, Mittmann LA, Braun C, Zuchtriegel G, Kaiser R, Nicolai L, Mack M, Weichert W, Lauber K, Uhl B, Reichel CA. Procoagulant platelets promote immune evasion in triple-negative breast cancer. Blood 2024; 144:216-226. [PMID: 38648571 DOI: 10.1182/blood.2023022928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024] Open
Abstract
ABSTRACT Triple-negative breast cancer (TNBC) is an aggressive tumor entity in which immune checkpoint (IC) molecules are primarily synthesized in the tumor environment. Here, we report that procoagulant platelets bear large amounts of such immunomodulatory factors and that the presence of these cellular blood components in TNBC relates to protumorigenic immune-cell activity and impaired survival. Mechanistically, tumor-released nucleic acids attract platelets to the aberrant tumor microvasculature, where they undergo procoagulant activation, thus delivering specific stimulatory and inhibitory IC molecules. This concomitantly promotes protumorigenic myeloid leukocyte responses and compromises antitumorigenic lymphocyte activity, ultimately supporting tumor growth. Interference with platelet-leukocyte interactions prevented immune cell misguidance and suppressed tumor progression, nearly as effective as systemic IC inhibition. Hence, our data uncover a self-sustaining mechanism of TNBC by using platelets to misdirect immune-cell responses. Targeting this irregular multicellular interplay may represent a novel immunotherapeutic strategy for TNBC without the adverse effects of systemic IC inhibition.
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Affiliation(s)
- Johanna B Schaubaecher
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Bojan Smiljanov
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Florian Haring
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Katja Steiger
- Department of Pathology, Technical University Munich, Munich, Germany
| | - Zhengquan Wu
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Anais Ugurluoglu
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Joshua Luft
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Simone Ballke
- Department of Pathology, Technical University Munich, Munich, Germany
| | - Shaan Mahameed
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Vera Schneewind
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Jonas Hildinger
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Comprehensive Cancer Center, Munich Ludwig-Maximilians-Universität, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Laura A Mittmann
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Constanze Braun
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Gabriele Zuchtriegel
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Rainer Kaiser
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Medicine I, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- German Centre for Cardiovascular Research, Partner Site Munich Heart Alliance, Berlin, Germany
| | - Leo Nicolai
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Medicine I, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- German Centre for Cardiovascular Research, Partner Site Munich Heart Alliance, Berlin, Germany
| | - Matthias Mack
- Department of Nephrology, University of Regensburg, Regensburg, Germany
| | - Wilko Weichert
- Department of Pathology, Technical University Munich, Munich, Germany
| | - Kirsten Lauber
- Department of Radiation Oncology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Bernd Uhl
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
| | - Christoph A Reichel
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
- Comprehensive Cancer Center, Munich Ludwig-Maximilians-Universität, Ludwig-Maximilians-Universität University Hospital, Munich, Germany
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5
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Peng D, Sun S, Zhao M, Zhan L, Wang X. Current Advances in Nanomaterials Affecting Functions and Morphology of Platelets. J Funct Biomater 2024; 15:188. [PMID: 39057309 PMCID: PMC11278457 DOI: 10.3390/jfb15070188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/28/2024] [Accepted: 06/28/2024] [Indexed: 07/28/2024] Open
Abstract
Nanomaterials have been extensively used in the biomedical field due to their unique physical and chemical properties. They promise wide applications in the diagnosis, prevention, and treatment of diseases. Nanodrugs are generally transported to target tissues or organs by coupling targeting molecules or enhanced permeability and retention effect (EPR) passively. As intravenous injection is the most common means of administration of nanomedicine, the transport process inevitably involves the interactions between nanoparticles (NPs) and blood cells. Platelets are known to not only play a critical role in normal coagulation by performing adhesion, aggregation, release, and contraction functions, but also be associated with pathological thrombosis, tumor metastasis, inflammation, and immune reactions, making it necessary to investigate the effects of NPs on platelet function during transport, particularly the way in which their physical and chemical properties determine their interaction with platelets and the underlying mechanisms by which they activate and induce platelet aggregation. However, such data are lacking. This review is intended to summarize the effects of NPs on platelet activation, aggregation, release, and apoptosis, as well as their effects on membrane proteins and morphology in order to shed light on such key issues as how to reduce their adverse reactions in the blood system, which should be taken into consideration in NP engineering.
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Affiliation(s)
| | | | | | - Linsheng Zhan
- Institute of Health Service and Transfusion Medicine, Beijing 100850, China; (D.P.); (S.S.); (M.Z.)
| | - Xiaohui Wang
- Institute of Health Service and Transfusion Medicine, Beijing 100850, China; (D.P.); (S.S.); (M.Z.)
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6
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Han J, Dong H, Zhu T, Wei Q, Wang Y, Wang Y, Lv Y, Mu H, Huang S, Zeng K, Xu J, Ding J. Biochemical hallmarks-targeting antineoplastic nanotherapeutics. Bioact Mater 2024; 36:427-454. [PMID: 39044728 PMCID: PMC11263727 DOI: 10.1016/j.bioactmat.2024.05.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/18/2024] [Accepted: 05/27/2024] [Indexed: 07/25/2024] Open
Abstract
Tumor microenvironments (TMEs) have received increasing attention in recent years as they play pivotal roles in tumorigenesis, progression, metastases, and resistance to the traditional modalities of cancer therapy like chemotherapy. With the rapid development of nanotechnology, effective antineoplastic nanotherapeutics targeting the aberrant hallmarks of TMEs have been proposed. The appropriate design and fabrication endow nanomedicines with the abilities for active targeting, TMEs-responsiveness, and optimization of physicochemical properties of tumors, thereby overcoming transport barriers and significantly improving antineoplastic therapeutic benefits. This review begins with the origins and characteristics of TMEs and discusses the latest strategies for modulating the TMEs by focusing on the regulation of biochemical microenvironments, such as tumor acidosis, hypoxia, and dysregulated metabolism. Finally, this review summarizes the challenges in the development of smart anti-cancer nanotherapeutics for TME modulation and examines the promising strategies for combination therapies with traditional treatments for further clinical translation.
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Affiliation(s)
- Jing Han
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - He Dong
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - Tianyi Zhu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - Qi Wei
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, PR China
| | - Yongheng Wang
- Department of Biomedical Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Yun Wang
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - Yu Lv
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - Haoran Mu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - Shandeng Huang
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - Ke Zeng
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - Jing Xu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Bone Tumor Institution, 100 Haining Street, Shanghai, 200080, PR China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, PR China
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7
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Ryan AT, Kim M, Lim K. Immune Cell Migration to Cancer. Cells 2024; 13:844. [PMID: 38786066 PMCID: PMC11120175 DOI: 10.3390/cells13100844] [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: 03/23/2024] [Revised: 04/27/2024] [Accepted: 05/03/2024] [Indexed: 05/25/2024] Open
Abstract
Immune cell migration is required for the development of an effective and robust immune response. This elegant process is regulated by both cellular and environmental factors, with variables such as immune cell state, anatomical location, and disease state that govern differences in migration patterns. In all cases, a major factor is the expression of cell surface receptors and their cognate ligands. Rapid adaptation to environmental conditions partly depends on intrinsic cellular immune factors that affect a cell's ability to adjust to new environment. In this review, we discuss both myeloid and lymphoid cells and outline key determinants that govern immune cell migration, including molecules required for immune cell adhesion, modes of migration, chemotaxis, and specific chemokine signaling. Furthermore, we summarize tumor-specific elements that contribute to immune cell trafficking to cancer, while also exploring microenvironment factors that can alter these cellular dynamics within the tumor in both a pro and antitumor fashion. Specifically, we highlight the importance of the secretome in these later aspects. This review considers a myriad of factors that impact immune cell trajectory in cancer. We aim to highlight the immunotherapeutic targets that can be harnessed to achieve controlled immune trafficking to and within tumors.
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Affiliation(s)
- Allison T. Ryan
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY 14642, USA; (A.T.R.); (M.K.)
- David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY 14642, USA
| | - Minsoo Kim
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY 14642, USA; (A.T.R.); (M.K.)
- David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY 14642, USA
| | - Kihong Lim
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY 14642, USA; (A.T.R.); (M.K.)
- David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY 14642, USA
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8
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Gremmel T, Frelinger AL, Michelson AD. Platelet Physiology. Semin Thromb Hemost 2024. [PMID: 38653463 DOI: 10.1055/s-0044-1786387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Platelets are the smallest blood cells, numbering 150 to 350 × 109/L in healthy individuals. The ability of activated platelets to adhere to an injured vessel wall and form aggregates was first described in the 19th century. Besides their long-established roles in thrombosis and hemostasis, platelets are increasingly recognized as pivotal players in numerous other pathophysiological processes including inflammation and atherogenesis, antimicrobial host defense, and tumor growth and metastasis. Consequently, profound knowledge of platelet structure and function is becoming more important in research and in many fields of modern medicine. This review provides an overview of platelet physiology focusing particularly on the structure, granules, surface glycoproteins, and activation pathways of platelets.
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Affiliation(s)
- Thomas Gremmel
- Division of Hematology/Oncology, Boston Children's Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
- Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
- Institute of Cardiovascular Pharmacotherapy and Interventional Cardiology, Karl Landsteiner Society, St. Pölten, Austria
- Karl Landsteiner University of Health Sciences, Krems, Austria
- Department of Internal Medicine I, Cardiology and Intensive Care Medicine, Landesklinikum Mistelbach-Gänserndorf, Mistelbach, Austria
| | - Andrew L Frelinger
- Division of Hematology/Oncology, Boston Children's Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Alan D Michelson
- Division of Hematology/Oncology, Boston Children's Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
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9
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Le Chapelain O, Jadoui S, Gros A, Barbaria S, Benmeziane K, Ollivier V, Dupont S, Solo Nomenjanahary M, Mavouna S, Rogozarski J, Mawhin MA, Caligiuri G, Delbosc S, Porteu F, Nieswandt B, Mangin PH, Boulaftali Y, Ho-Tin-Noé B. The localization, origin, and impact of platelets in the tumor microenvironment are tumor type-dependent. J Exp Clin Cancer Res 2024; 43:84. [PMID: 38493157 PMCID: PMC10944607 DOI: 10.1186/s13046-024-03001-2] [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: 11/27/2023] [Accepted: 03/01/2024] [Indexed: 03/18/2024] Open
Abstract
BACKGROUND How platelets interact with and influence the tumor microenvironment (TME) remains poorly characterized. METHODS We compared the presence and participation of platelets in the TME of two tumors characterized by highly different TME, PyMT AT-3 mammary tumors and B16F1 melanoma. RESULTS We show that whereas firmly adherent platelets continuously line tumor vessels of both AT-3 and B16F1 tumors, abundant extravascular stromal clusters of platelets from thrombopoietin-independent origin were present only in AT-3 mammary tumors. We further show that platelets influence the angiogenic and inflammatory profiles of AT-3 and B16F1 tumors, though with very different outcomes according to tumor type. Whereas thrombocytopenia increased bleeding in both tumor types, it further caused severe endothelial degeneration associated with massive vascular leakage, tumor swelling, and increased infiltration of cytotoxic cells, only in AT-3 tumors. CONCLUSIONS These results indicate that while platelets are integral components of solid tumors, their localization and origin in the TME, as well as their impact on its shaping, are tumor type-dependent.
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Affiliation(s)
- Ophélie Le Chapelain
- Faculté de Pharmacie de Paris, Université Paris Cité, Inserm UMR-S 1144 -Optimisation Thérapeutique en Neuropsychopharmacologie, 4 avenue de l'Observatoire, Paris, 75006, France
| | - Soumaya Jadoui
- Université Paris Cité, INSERM UMR 1148, LVTS, Paris, F-75018, France
| | - Angèle Gros
- Université Paris Cité, INSERM UMR 1148, LVTS, Paris, F-75018, France
| | - Samir Barbaria
- Université Paris Cité, INSERM UMR 1148, LVTS, Paris, F-75018, France
| | | | - Véronique Ollivier
- Faculté de Pharmacie de Paris, Université Paris Cité, Inserm UMR-S 1144 -Optimisation Thérapeutique en Neuropsychopharmacologie, 4 avenue de l'Observatoire, Paris, 75006, France
- Université Paris Cité, INSERM UMR 1148, LVTS, Paris, F-75018, France
| | - Sébastien Dupont
- Faculté de Pharmacie de Paris, Université Paris Cité, Inserm UMR-S 1144 -Optimisation Thérapeutique en Neuropsychopharmacologie, 4 avenue de l'Observatoire, Paris, 75006, France
| | - Mialitiana Solo Nomenjanahary
- Faculté de Pharmacie de Paris, Université Paris Cité, Inserm UMR-S 1144 -Optimisation Thérapeutique en Neuropsychopharmacologie, 4 avenue de l'Observatoire, Paris, 75006, France
| | - Sabrina Mavouna
- Faculté de Pharmacie de Paris, Université Paris Cité, Inserm UMR-S 1144 -Optimisation Thérapeutique en Neuropsychopharmacologie, 4 avenue de l'Observatoire, Paris, 75006, France
| | - Jasmina Rogozarski
- Faculté de Pharmacie de Paris, Université Paris Cité, Inserm UMR-S 1144 -Optimisation Thérapeutique en Neuropsychopharmacologie, 4 avenue de l'Observatoire, Paris, 75006, France
| | - Marie-Anne Mawhin
- Université Paris Cité, INSERM UMR 1148, LVTS, Paris, F-75018, France
| | | | - Sandrine Delbosc
- Université Paris Cité, INSERM UMR 1148, LVTS, Paris, F-75018, France
| | | | - Bernhard Nieswandt
- Institute of Experimental Biomedicine I, University Hospital Würzburg and Rudolf Virchow Center for Integrative and Translational Bioimaging, University of Würzburg, Würzburg, Germany
| | - Pierre H Mangin
- Université de Strasbourg, Institut National de la Santé et de la Recherche Médicale, Etablissement Français du Sang Grand-Est, Unité Mixte de Recherche-S1255, Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, F-67065, France
| | - Yacine Boulaftali
- Université Paris Cité, INSERM UMR 1148, LVTS, Paris, F-75018, France
| | - Benoit Ho-Tin-Noé
- Faculté de Pharmacie de Paris, Université Paris Cité, Inserm UMR-S 1144 -Optimisation Thérapeutique en Neuropsychopharmacologie, 4 avenue de l'Observatoire, Paris, 75006, France.
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10
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Najafi S, Asemani Y, Majidpoor J, Mahmoudi R, Aghaei-Zarch SM, Mortezaee K. Tumor-educated platelets. Clin Chim Acta 2024; 552:117690. [PMID: 38056548 DOI: 10.1016/j.cca.2023.117690] [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: 10/15/2023] [Revised: 11/29/2023] [Accepted: 12/02/2023] [Indexed: 12/08/2023]
Abstract
Beyond traditional roles in homeostasis and coagulation, growing evidence suggests that platelets also reflect malignant transformation in cancer. Platelets are present in the tumor microenvironment where they interact with cancer cells. This interaction results in direct and indirect "education" as evident by platelet alterations in adhesion molecules, glycoproteins, nucleic acids, proteins and various receptors. Subsequently, these tumor-educated platelets (TEPs) circulate throughout the body and play pivotal roles in promotion of tumor growth and dissemination. Accordingly, platelet status can be considered a unique blood-based biomarker that can potentially predict prognosis and therapeutic success. Recently, liquid biopsies including TEPs have received much attention as safe, minimally invasive and sensitive alternatives for patient management. Herein, we provide an overview of TEPs and explore their benefits and limitations in cancer.
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Affiliation(s)
- Sajad Najafi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yahya Asemani
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jamal Majidpoor
- Department of Anatomy, School of Medicine, Infectious Diseases Research Center, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Reza Mahmoudi
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Mohsen Aghaei-Zarch
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Keywan Mortezaee
- Department of Anatomy, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.
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11
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Sharma P, Otto M. Multifunctional nanocomposites modulating the tumor microenvironment for enhanced cancer immunotherapy. Bioact Mater 2024; 31:440-462. [PMID: 37701452 PMCID: PMC10494322 DOI: 10.1016/j.bioactmat.2023.08.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/09/2023] [Accepted: 08/28/2023] [Indexed: 09/14/2023] Open
Abstract
Cancer immunotherapy has gained momentum for treating malignant tumors over the past decade. Checkpoint blockade and chimeric antigen receptor cell therapy (CAR-T) have shown considerable potency against liquid and solid cancers. However, the tumor microenvironment (TME) is highly immunosuppressive and hampers the effect of currently available cancer immunotherapies on overall treatment outcomes. Advancements in the design and engineering of nanomaterials have opened new avenues to modulate the TME. Progress in the current nanocomposite technology can overcome immunosuppression and trigger robust immunotherapeutic responses by integrating synergistic functions of different molecules. We will review recent advancements in nanomedical applications and discuss specifically designed nanocomposites modulating the TME for cancer immunotherapy. In addition, we provide information on the current landscape of clinical-stage nanocomposites for cancer immunotherapy.
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Affiliation(s)
- Prashant Sharma
- Department of Child Health, University of Arizona College of Medicine-Phoenix, ABC1 Building, 425 N 5th Street, Phoenix, AZ, 85004, USA
| | - Mario Otto
- Department of Child Health, University of Arizona College of Medicine-Phoenix, ABC1 Building, 425 N 5th Street, Phoenix, AZ, 85004, USA
- Center for Cancer and Blood Disorders (CCBD), Phoenix Children's, 1919 E Thomas Rd, Phoenix, AZ, 85016, USA
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12
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Li S, Lu Z, Wu S, Chu T, Li B, Qi F, Zhao Y, Nie G. The dynamic role of platelets in cancer progression and their therapeutic implications. Nat Rev Cancer 2024; 24:72-87. [PMID: 38040850 DOI: 10.1038/s41568-023-00639-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/13/2023] [Indexed: 12/03/2023]
Abstract
Systemic antiplatelet treatment represents a promising option to improve the therapeutic outcomes and therapeutic efficacy of chemotherapy and immunotherapy due to the critical contribution of platelets to tumour progression. However, until recently, targeting platelets as a cancer therapeutic has been hampered by the elevated risk of haemorrhagic and thrombocytopenic (low platelet count) complications owing to the lack of specificity for tumour-associated platelets. Recent work has advanced our understanding of the molecular mechanisms responsible for the contribution of platelets to tumour progression and metastasis. This has led to the identification of the biological changes in platelets in the presence of tumours, the complex interactions between platelets and tumour cells during tumour progression, and the effects of platelets on antitumour therapeutic response. In this Review, we present a detailed picture of the dynamic roles of platelets in tumour development and progression as well as their use in diagnosis, prognosis and monitoring response to therapy. We also provide our view on how to overcome challenges faced by the development of precise antiplatelet strategies for safe and efficient clinical cancer therapy.
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Affiliation(s)
- Suping Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China.
| | - Zefang Lu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Suying Wu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Tianjiao Chu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- College of Pharmaceutical Science, Jilin University, Changchun, China
| | - Bozhao Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
| | - Feilong Qi
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China.
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13
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Nappi F. To Gain Insights into the Pathophysiological Mechanisms of the Thrombo-Inflammatory Process in the Atherosclerotic Plaque. Int J Mol Sci 2023; 25:47. [PMID: 38203218 PMCID: PMC10778759 DOI: 10.3390/ijms25010047] [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: 11/17/2023] [Revised: 12/17/2023] [Accepted: 12/17/2023] [Indexed: 01/12/2024] Open
Abstract
Thromboinflammation, the interplay between thrombosis and inflammation, is a significant pathway that drives cardiovascular and autoimmune diseases, as well as COVID-19. SARS-CoV-2 causes inflammation and blood clotting issues. Innate immune cells have emerged as key modulators of this process. Neutrophils, the most predominant white blood cells in humans, are strategically positioned to promote thromboinflammation. By releasing decondensed chromatin structures called neutrophil extracellular traps (NETs), neutrophils can initiate an organised cell death pathway. These structures are adorned with histones, cytoplasmic and granular proteins, and have cytotoxic, immunogenic, and prothrombotic effects that can hasten disease progression. Protein arginine deiminase 4 (PAD4) catalyses the citrullination of histones and is involved in the release of extracellular DNA (NETosis). The neutrophil inflammasome is also required for this process. Understanding the link between the immunological function of neutrophils and the procoagulant and proinflammatory activities of monocytes and platelets is important in understanding thromboinflammation. This text discusses how vascular blockages occur in thromboinflammation due to the interaction between neutrophil extracellular traps and ultra-large VWF (von Willebrand Factor). The activity of PAD4 is important for understanding the processes that drive thromboinflammation by linking the immunological function of neutrophils with the procoagulant and proinflammatory activities of monocytes and platelets. This article reviews how vaso-occlusive events in thrombo-inflammation occur through the interaction of neutrophil extracellular traps with von Willebrand factor. It highlights the relevance of PAD4 in neutrophil inflammasome assembly and neutrophil extracellular traps in thrombo-inflammatory diseases such as atherosclerosis and cardiovascular disease. Interaction between platelets, VWF, NETs and inflammasomes is critical for the progression of thromboinflammation in several diseases and was recently shown to be active in COVID-19.
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Affiliation(s)
- Francesco Nappi
- Department of Cardiac Surgery, Centre Cardiologique du Nord, 93200 Saint-Denis, France
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14
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Zhao J, Huang A, Zeller J, Peter K, McFadyen JD. Decoding the role of platelets in tumour metastasis: enigmatic accomplices and intricate targets for anticancer treatments. Front Immunol 2023; 14:1256129. [PMID: 38106409 PMCID: PMC10722285 DOI: 10.3389/fimmu.2023.1256129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 11/15/2023] [Indexed: 12/19/2023] Open
Abstract
The canonical role of platelets as central players in cardiovascular disease by way of their fundamental role in mediating thrombosis and haemostasis is well appreciated. However, there is now a large body of experimental evidence demonstrating that platelets are also pivotal in various physiological and pathophysiological processes other than maintaining haemostasis. Foremost amongst these is the emerging data highlighting the key role of platelets in driving cancer growth, metastasis and modulating the tumour microenvironment. As such, there is significant interest in targeting platelets therapeutically for the treatment of cancer. Therefore, the purpose of this review is to provide an overview of how platelets contribute to the cancer landscape and why platelets present as valuable targets for the development of novel cancer diagnosis tools and therapeutics.
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Affiliation(s)
- Jessie Zhao
- Department of Clinical Haematology, Alfred Hospital, Melbourne, VI, Australia
- Australian Centre for Blood Diseases, Monash University, Melbourne, VI, Australia
| | - Angela Huang
- Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VI, Australia
| | - Johannes Zeller
- Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VI, Australia
- Department of Plastic and Hand Surgery, Medical Center – University of Freiburg, Medical Faculty of the University of Freiburg, Freiburg, Germany
| | - Karlheinz Peter
- Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VI, Australia
- Department of Cardiology, Alfred Hospital, Melbourne, VI, Australia
- Department of Cardiometabolic Health, The University of Melbourne, Parkville, VI, Australia
- Department of Medicine, Monash University, Melbourne, VI, Australia
| | - James D. McFadyen
- Department of Clinical Haematology, Alfred Hospital, Melbourne, VI, Australia
- Australian Centre for Blood Diseases, Monash University, Melbourne, VI, Australia
- Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VI, Australia
- Department of Cardiometabolic Health, The University of Melbourne, Parkville, VI, Australia
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15
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Nording H, Baron L, Sauter M, Lübken A, Rawish E, Szepanowski R, von Esebeck J, Sun Y, Emami H, Meusel M, Saraei R, Schanze N, Gorantla SP, von Bubnoff N, Geisler T, von Hundelshausen P, Stellos K, Marquardt J, Sadik CD, Köhl J, Duerschmied D, Kleinschnitz C, Langer HF. Platelets regulate ischemia-induced revascularization and angiogenesis by secretion of growth factor-modulating factors. Blood Adv 2023; 7:6411-6427. [PMID: 37257194 PMCID: PMC10598500 DOI: 10.1182/bloodadvances.2021006891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/16/2023] [Accepted: 02/26/2023] [Indexed: 06/02/2023] Open
Abstract
In ischemic tissue, platelets can modulate angiogenesis. The specific factors influencing this function, however, are poorly understood. Here, we characterized the complement anaphylatoxin C5a-mediated activation of C5a receptor 1 (C5aR1) expressed on platelets as a potent regulator of ischemia-driven revascularization. We assessed the relevance of the anaphylatoxin receptor C5aR1 on platelets in patients with coronary artery disease as well as those with peripheral artery disease and used genetic mouse models to characterize its significance for ischemia and growth factor-driven revascularization. The presence of C5aR1-expressing platelets was increased in the hindlimb ischemia model. Ischemia-driven angiogenesis was significantly improved in C5aR1-/- mice but not in C5-/- mice, suggesting a specific role of C5aR1. Experiments using the supernatant of C5a-stimulated platelets suggested a paracrine mechanism of angiogenesis inhibition by platelets by means of antiangiogenic CXC chemokine ligand 4 (CXCL4, PF4). Lineage-specific C5aR1 deletion verified that the secretion of CXCL4 depends on C5aR1 ligation on platelets. Using C5aR1-/-CXCL4-/- mice, we observed no additional effect in the revascularization response, underscoring a strong dependence of CXCL4 secretion on the C5a-C5aR1-axis. We identified a novel mechanism for inhibition of neovascularization via platelet C5aR1, which was mediated by the release of antiangiogenic CXCL4.
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Affiliation(s)
- Henry Nording
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Lübeck/Kiel, Lübeck, Germany
| | - Lasse Baron
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Manuela Sauter
- Cardioimmunology Group, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Antje Lübken
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Elias Rawish
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Rebecca Szepanowski
- Department of Neurology and Center for Translational and Behavioral Neurosciences, University Hospital Essen, Essen, Germany
| | - Jacob von Esebeck
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Ying Sun
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Hossein Emami
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Moritz Meusel
- University Hospital, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Roza Saraei
- University Hospital, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
| | - Nancy Schanze
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Sivahari Prasad Gorantla
- Department of Hematology and Oncology, Medical Center, University of Schleswig-Holstein, Lübeck, Germany
| | - Nikolas von Bubnoff
- Department of Hematology and Oncology, Medical Center, University of Schleswig-Holstein, Lübeck, Germany
| | - Tobias Geisler
- Department of Cardiovascular Medicine, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Philipp von Hundelshausen
- Institute for Cardiovascular Prevention, Ludwig Maximilians University Munich, Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany
| | - Konstantinos Stellos
- German Centre for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim, Germany
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- Department of Cardiovascular Research, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Jens Marquardt
- First Department of Medicine, University of Schleswig-Holstein, Lübeck, Germany
| | | | - Jörg Köhl
- Institute for Systemic Inflammation Research, University of Schleswig-Holstein, Lübeck, Germany
| | - Daniel Duerschmied
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim, Germany
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Christoph Kleinschnitz
- Department of Neurology and Center for Translational and Behavioral Neurosciences, University Hospital Essen, Essen, Germany
| | - Harald F. Langer
- Cardioimmunology Group, Medical Clinic II, University Heart Center Lübeck, Lübeck, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Lübeck/Kiel, Lübeck, Germany
- Cardioimmunology Group, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim, Germany
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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16
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Kaiser R, Escaig R, Nicolai L. Hemostasis without clot formation: how platelets guard the vasculature in inflammation, infection, and malignancy. Blood 2023; 142:1413-1425. [PMID: 37683182 DOI: 10.1182/blood.2023020535] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/23/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Platelets are key vascular effectors in hemostasis, with activation signals leading to fast recruitment, aggregation, and clot formation. The canonical process of hemostasis is well-characterized and shares many similarities with pathological thrombus formation. However, platelets are also crucially involved in the maintenance of vascular integrity under both steady-state and inflammatory conditions by ensuring blood vessel homeostasis and preventing microbleeds. In these settings, platelets use distinct receptors, signaling pathways, and ensuing effector functions to carry out their deeds. Instead of simply forming clots, they mainly act as individual sentinels that swiftly adapt their behavior to the local microenvironment. In this review, we summarize previously recognized and more recent studies that have elucidated how anucleate, small platelets manage to maintain vascular integrity when faced with challenges of infection, sterile inflammation, and even malignancy. We dissect how platelets are recruited to the vascular wall, how they identify sites of injury, and how they prevent hemorrhage as single cells. Furthermore, we discuss mechanisms and consequences of platelets' interaction with leukocytes and endothelial cells, the relevance of adhesion as well as signaling receptors, in particular immunoreceptor tyrosine-based activation motif receptors, and cross talk with the coagulation system. Finally, we outline how recent insights into inflammatory hemostasis and vascular integrity may aid in the development of novel therapeutic strategies to prevent hemorrhagic events and vascular dysfunction in patients who are critically ill.
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Affiliation(s)
- Rainer Kaiser
- Medizinische Klinik und Poliklinik I, University Hospital Ludwig Maximilian University, Munich, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Partner Site Munich Heart Alliance, Munich, Germany
| | - Raphael Escaig
- Medizinische Klinik und Poliklinik I, University Hospital Ludwig Maximilian University, Munich, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Partner Site Munich Heart Alliance, Munich, Germany
| | - Leo Nicolai
- Medizinische Klinik und Poliklinik I, University Hospital Ludwig Maximilian University, Munich, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Partner Site Munich Heart Alliance, Munich, Germany
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17
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Liao K, Zhang X, Liu J, Teng F, He Y, Cheng J, Yang Q, Zhang W, Xie Y, Guo D, Cao G, Xu Y, Huang B, Wang X. The role of platelets in the regulation of tumor growth and metastasis: the mechanisms and targeted therapy. MedComm (Beijing) 2023; 4:e350. [PMID: 37719444 PMCID: PMC10501337 DOI: 10.1002/mco2.350] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/21/2023] [Accepted: 07/23/2023] [Indexed: 09/19/2023] Open
Abstract
Platelets are a class of pluripotent cells that, in addition to hemostasis and maintaining vascular endothelial integrity, are also involved in tumor growth and distant metastasis. The tumor microenvironment is a complex and comprehensive system composed of tumor cells and their surrounding immune and inflammatory cells, tumor-related fibroblasts, nearby interstitial tissues, microvessels, and various cytokines and chemokines. As an important member of the tumor microenvironment, platelets can promote tumor invasion and metastasis through various mechanisms. Understanding the role of platelets in tumor metastasis is important for diagnosing the risk of metastasis and prolonging survival. In this study, we more fully elucidate the underlying mechanisms by which platelets promote tumor growth and metastasis by modulating processes, such as immune escape, angiogenesis, tumor cell homing, and tumor cell exudation, and further summarize the effects of platelet-tumor cell interactions in the tumor microenvironment and possible tumor treatment strategies based on platelet studies. Our summary will more comprehensively and clearly demonstrate the role of platelets in tumor metastasis, so as to help clinical judgment of the potential risk of metastasis in cancer patients, with a view to improving the prognosis of patients.
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Affiliation(s)
- Kaili Liao
- Jiangxi Province Key Laboratory of Laboratory MedicineJiangxi Provincial Clinical Research Center for Laboratory MedicineDepartment of Clinical LaboratoryThe Second Affiliated Hospital of Nanchang UniversityNanchangChina
| | - Xue Zhang
- Queen Mary College of Nanchang UniversityNanchangChina
| | - Jie Liu
- School of Public HealthNanchang UniversityNanchangChina
| | - Feifei Teng
- School of Public HealthNanchang UniversityNanchangChina
| | - Yingcheng He
- Queen Mary College of Nanchang UniversityNanchangChina
| | - Jinting Cheng
- School of Public HealthNanchang UniversityNanchangChina
| | - Qijun Yang
- Queen Mary College of Nanchang UniversityNanchangChina
| | - Wenyige Zhang
- Queen Mary College of Nanchang UniversityNanchangChina
| | - Yuxuan Xie
- The Second Clinical Medical CollegeNanchang UniversityNanchangChina
| | - Daixin Guo
- School of Public HealthNanchang UniversityNanchangChina
| | - Gaoquan Cao
- The Fourth Clinical Medical CollegeNanchang UniversityNanchangChina
| | - Yanmei Xu
- Jiangxi Province Key Laboratory of Laboratory MedicineJiangxi Provincial Clinical Research Center for Laboratory MedicineDepartment of Clinical LaboratoryThe Second Affiliated Hospital of Nanchang UniversityNanchangChina
| | - Bo Huang
- Jiangxi Province Key Laboratory of Laboratory MedicineJiangxi Provincial Clinical Research Center for Laboratory MedicineDepartment of Clinical LaboratoryThe Second Affiliated Hospital of Nanchang UniversityNanchangChina
| | - Xiaozhong Wang
- Jiangxi Province Key Laboratory of Laboratory MedicineJiangxi Provincial Clinical Research Center for Laboratory MedicineDepartment of Clinical LaboratoryThe Second Affiliated Hospital of Nanchang UniversityNanchangChina
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18
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Wang L, Zhang K, Feng J, Wang D, Liu J. The Progress of Platelets in Breast Cancer. Cancer Manag Res 2023; 15:811-821. [PMID: 37589033 PMCID: PMC10426457 DOI: 10.2147/cmar.s418574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/27/2023] [Indexed: 08/18/2023] Open
Abstract
Breast cancer is the most common female cancer and the sixth leading cause of death, seriously affecting the quality of life of women. Platelets, one of the fragments derived from megakaryocytes, are being increasingly investigated by tumor researchers because of their anticoagulant function. According to relevant studies, platelets, as the key source of circulating angiogenesis-related factors, can regulate tumor angiogenesis and vascular integrity, and they can also affect the tumor microenvironment, thereby facilitating the proliferation and differentiation of tumor cells. By covering or transferring normal MHC I molecules to tumor cells, platelets can protect tumor cells from being killed by the immune system and facilitate tumor cell metastasis. However, details on the mechanisms involved have remained elusive. This paper reviews and analyzes studies of the role of platelets in tumorigenesis, tumor cell proliferation, tumor metastasis, and cancer treatment to provide readers with a better understanding of the relevant studies.
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Affiliation(s)
- Luchang Wang
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People’s Republic of China
- Department of Clinical Laboratory, Chengdu Second People’s Hospital, Chengdu, 610017, People’s Republic of China
| | - Kaijiong Zhang
- Department of Clinical Laboratory, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610041, People’s Republic of China
| | - Jia Feng
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People’s Republic of China
| | - Dongsheng Wang
- Department of Clinical Laboratory, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610041, People’s Republic of China
| | - Jinbo Liu
- Department of Laboratory Medicine, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People’s Republic of China
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19
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Graca FA, Stephan A, Minden-Birkenmaier BA, Shirinifard A, Wang YD, Demontis F, Labelle M. Platelet-derived chemokines promote skeletal muscle regeneration by guiding neutrophil recruitment to injured muscles. Nat Commun 2023; 14:2900. [PMID: 37217480 DOI: 10.1038/s41467-023-38624-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 05/09/2023] [Indexed: 05/24/2023] Open
Abstract
Skeletal muscle regeneration involves coordinated interactions between different cell types. Injection of platelet-rich plasma is circumstantially considered an aid to muscle repair but whether platelets promote regeneration beyond their role in hemostasis remains unexplored. Here, we find that signaling via platelet-released chemokines is an early event necessary for muscle repair in mice. Platelet depletion reduces the levels of the platelet-secreted neutrophil chemoattractants CXCL5 and CXCL7/PPBP. Consequently, early-phase neutrophil infiltration to injured muscles is impaired whereas later inflammation is exacerbated. Consistent with this model, neutrophil infiltration to injured muscles is compromised in male mice with Cxcl7-knockout platelets. Moreover, neo-angiogenesis and the re-establishment of myofiber size and muscle strength occurs optimally in control mice post-injury but not in Cxcl7ko mice and in neutrophil-depleted mice. Altogether, these findings indicate that platelet-secreted CXCL7 promotes regeneration by recruiting neutrophils to injured muscles, and that this signaling axis could be utilized therapeutically to boost muscle regeneration.
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Affiliation(s)
- Flavia A Graca
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Anna Stephan
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Benjamin A Minden-Birkenmaier
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
- Department of Oncology, Division of Molecular Oncology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Abbas Shirinifard
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Yong-Dong Wang
- Department of Cell and Molecular Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Fabio Demontis
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
| | - Myriam Labelle
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
- Department of Oncology, Division of Molecular Oncology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
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20
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Ding S, Dong X, Song X. Tumor educated platelet: the novel BioSource for cancer detection. Cancer Cell Int 2023; 23:91. [PMID: 37170255 PMCID: PMC10176761 DOI: 10.1186/s12935-023-02927-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/15/2023] [Indexed: 05/13/2023] Open
Abstract
Platelets, involved in the whole process of tumorigenesis and development, constantly absorb and enrich tumor-specific substances in the circulation during their life span, thus called "Tumor Educated Platelets" (TEPs). The alterations of platelet mRNA profiles have been identified as tumor markers due to the regulatory mechanism of post-transcriptional splicing. Small nuclear RNAs (SnRNAs), the important spliceosome components in platelets, dominate platelet RNA splicing and regulate the splicing intensity of pre-mRNA. Endogenous variation at the snRNA levels leads to widespread differences in alternative splicing, thereby driving the development and progression of neoplastic diseases. This review systematically expounds the bidirectional tumor-platelets interactions, especially the tumor induced alternative splicing in TEP, and further explores whether molecules related to alternative splicing such as snRNAs can serve as novel biomarkers for cancer diagnostics.
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Affiliation(s)
- Shanshan Ding
- Department of Clinical Laboratory, Shandong Cancer Hospital & Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, PR China
| | - Xiaohan Dong
- Department of Laboratory Medicine, Affiliated Hospital of Jining Medical University, Jining, Shandong, China
| | - Xingguo Song
- Department of Clinical Laboratory, Shandong Cancer Hospital & Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, PR China.
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21
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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: 4] [Impact Index Per Article: 4.0] [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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22
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Ke Y, Ma Z, Ye H, Guan X, Xiang Z, Xia Y, Shi Q. Chlorogenic Acid-Conjugated Nanoparticles Suppression of Platelet Activation and Disruption to Tumor Vascular Barriers for Enhancing Drug Penetration in Tumor. Adv Healthc Mater 2022; 12:e2202205. [PMID: 36509084 DOI: 10.1002/adhm.202202205] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/25/2022] [Indexed: 12/14/2022]
Abstract
Hypercoagulation threatens the lives of cancer patients and cancer progression. Platelet overactivation attributes to the tumor-associated hypercoagulation and maintenance of the tumor endothelial integrity, leading to limited intratumoral perfusion of nanoagents into solid tumors in spite of the enhanced penetration and retention effect (EPR). Therefore, the clinical application of nanotherapeutics in solid cancer still faces great challenges. Herein, this work establishes platelet inhibiting nanoagents based on FeIII -doped C3 N4 coloaded with the chemotherapy drug and the antiplatelet drug chlorogenic acid (CA), further opening tumor vascular endothelial junctions, thereby disrupting the tumor vascular endothelial integrity, and enhancing drug perfusion. Moreover, CA not only damages the cancer cells but also potentiates the cytotoxicity induced by the chemotherapy drug doxorubicin, synergistically ablating the tumor tissue. Further, the introduction of CA relieves the original causes of the hypercoagulable state such as tissue factor (TF), thrombin, and matrix metalloproteinases (MMPs) secreted by cancer cells. It is anticipated that the hypercoagulation- and platelet-inhibition strategy by integration of phenolic acid CA into chemotherapy provides insights into platelet inhibition-assisted theranostics based on nanomedicines.
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Affiliation(s)
- Yue Ke
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Zhifang Ma
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Hongbo Ye
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Xinghua Guan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Zehong Xiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yu Xia
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Qiang Shi
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
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23
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Abstract
The activating interplay of thrombosis and inflammation (thromboinflammation) has been established as a major underlying pathway, driving not only cardiovascular disease but also autoimmune disease and most recently, COVID-19. Throughout the years, innate immune cells have emerged as important modulators of this process. As the most abundant white blood cell in humans, neutrophils are well-positioned to propel thromboinflammation. This includes their ability to trigger an organized cell death pathway with the release of decondensed chromatin structures called neutrophil extracellular traps. Decorated with histones and cytoplasmic and granular proteins, neutrophil extracellular traps exert cytotoxic, immunogenic, and prothrombotic effects accelerating disease progression. Distinct steps leading to extracellular DNA release (NETosis) require the activities of PAD4 (protein arginine deiminase 4) catalyzing citrullination of histones and are supported by neutrophil inflammasome. By linking the immunologic function of neutrophils with the procoagulant and proinflammatory activities of monocytes and platelets, PAD4 activity holds important implications for understanding the processes that fuel thromboinflammation. We will also discuss mechanisms whereby vascular occlusion in thromboinflammation depends on the interaction of neutrophil extracellular traps with ultra-large VWF (von Willebrand Factor) and speculate on the importance of PAD4 in neutrophil inflammasome assembly and neutrophil extracellular traps in thromboinflammatory diseases including atherosclerosis and COVID-19.
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Affiliation(s)
- Denisa D Wagner
- Program in Cellular and Molecular Medicine, Division of Hematology and Oncology, Boston Children's Hospital/Harvard Medical School, MA (D.D.W., L.A.H.)
| | - Lukas A Heger
- Program in Cellular and Molecular Medicine, Division of Hematology and Oncology, Boston Children's Hospital/Harvard Medical School, MA (D.D.W., L.A.H.)
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24
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Ng L, Wan TMH, Iyer DN, Huang Z, Sin RWY, Man ATK, Li X, Foo DCC, Lo OSH, Law WL. High Levels of Tumor miR-187-3p—A Potential Tumor-Suppressor microRNA—Are Correlated with Poor Prognosis in Colorectal Cancer. Cells 2022; 11:cells11152421. [PMID: 35954265 PMCID: PMC9367907 DOI: 10.3390/cells11152421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/29/2022] [Accepted: 08/03/2022] [Indexed: 12/19/2022] Open
Abstract
Background: The microRNA miR-187-3p plays antitumor roles in a variety of cancers. We and others have previously identified miR-187-3p as a potential tumor suppressor in colorectal cancer (CRC), but there are also reports revealing that high miR-187-3p levels are associated with poor prognosis among CRC patients. This study further investigated the clinicopathological significance of miR-187-3p in CRC. Methods: MiR-187-3p levels in paired polyp/CRC/normal specimens or primary CRC/liver metastasis specimens were determined by qPCR, and correlated with the patient’s clinicopathological and postoperative survival data. The clinical findings were validated using our validation cohort and data obtained from the TCGA or GEO databases. The functional effects of miR-187-3p were investigated through its overexpression in CRC cell lines. Results: MiR-187-3p was significantly repressed in colorectal polyps and CRC when compared to adjacent normal tissue. Overexpression of miR-187-3p in CRC cell lines impaired colony formation, cell migration, and invasion, and induced chemosensitivity. Clinical analysis revealed that despite miR-187-3p being repressed in CRC, high tumor miR-187-3p levels were positively correlated with tumor stage and disease recurrence. Further analysis showed that miR-187-3p levels were lower in metastatic specimens when compared to paired primary CRC, suggesting that high tumor miR-187-3p levels resulted from the dissemination of metastatic tumor cells. Tumor miR-187-3p levels were positively correlated with peripheral inflammation-related blood markers. Finally, SPRY1 was identified as a novel target gene of miR-187-3p, and was involved in miR-187-3p-impaired CRC metastasis. Conclusions: This study demonstrated that in spite of its repression and role as a tumor suppressor in CRC, high levels of miR-187-3p in tumors were correlated with poor prognosis and higher levels of peripheral inflammation-related blood markers.
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Affiliation(s)
- Lui Ng
- Correspondence: (L.N.); (W.-L.L.)
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25
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Le Chapelain O, Ho-Tin-Noé B. Intratumoral Platelets: Harmful or Incidental Bystanders of the Tumor Microenvironment? Cancers (Basel) 2022; 14:cancers14092192. [PMID: 35565321 PMCID: PMC9105443 DOI: 10.3390/cancers14092192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/23/2022] [Accepted: 04/25/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The tumor microenvironment (TME) is the complex and heterogenous ecosystem of solid tumors known to influence their growth and their progression. Besides tumor cells, the TME comprises a variety of host-derived cell types, ranging from endothelial cells to fibroblasts and immune cells. Clinical and experimental data are converging to indicate that platelets, originally known for their fundamental hemostatic function, also participate in tumor development and shaping of the TME. Considering the abundance of antiplatelet drugs, understanding if and how platelets contribute to the TME may lead to new therapeutic tools for improved cancer prevention and treatments. Abstract The tumor microenvironment (TME) has gained considerable interest because of its decisive impact on cancer progression, response to treatment, and disease recurrence. The TME can favor the proliferation, dissemination, and immune evasion of cancer cells. Likewise, there is accumulating evidence that intratumoral platelets could favor the development and aggressiveness of solid tumors, notably by influencing tumor cell phenotype and shaping the vascular and immune TME components. Yet, in contrast to other tumor-associated cell types like macrophages and fibroblasts, platelets are still often overlooked as components of the TME. This might be due, in part, to a deficit in investigating and reporting the presence of platelets in the TME and its relationships with cancer characteristics. This review summarizes available evidence from clinical and animal studies supporting the notion that tumor-associated platelets are not incidental bystanders but instead integral and active components of the TME. A particular emphasis is given to the description of intratumoral platelets, as well as to the functional consequences and possible mechanisms of intratumoral platelet accumulation.
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26
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Bendas G, Schlesinger M. The GPIb-IX complex on platelets: insight into its novel physiological functions affecting immune surveillance, hepatic thrombopoietin generation, platelet clearance and its relevance for cancer development and metastasis. Exp Hematol Oncol 2022; 11:19. [PMID: 35366951 PMCID: PMC8976409 DOI: 10.1186/s40164-022-00273-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/19/2022] [Indexed: 12/13/2022] Open
Abstract
The glycoprotein (GP) Ib-IX complex is a platelet receptor that mediates the initial interaction with subendothelial von Willebrand factor (VWF) causing platelet arrest at sites of vascular injury even under conditions of high shear. GPIb-IX dysfunction or deficiency is the reason for the rare but severe Bernard-Soulier syndrome (BSS), a congenital bleeding disorder. Although knowledge on GPIb-IX structure, its basic functions, ligands, and intracellular signaling cascades have been well established, several advances in GPIb-IX biology have been made in the recent years. Thus, two mechanosensitive domains and a trigger sequence in GPIb were characterized and its role as a thrombin receptor was deciphered. Furthermore, it became clear that GPIb-IX is involved in the regulation of platelet production, clearance and thrombopoietin secretion. GPIb is deemed to contribute to liver cancer development and metastasis. This review recapitulates these novel findings highlighting GPIb-IX in its multiple functions as a key for immune regulation, host defense, and liver cancer development.
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Affiliation(s)
- Gerd Bendas
- Department of Pharmacy, Rheinische Friedrich-Wilhelms-University Bonn, An der Immenburg 4, 53121, Bonn, Germany
| | - Martin Schlesinger
- Department of Pharmacy, Rheinische Friedrich-Wilhelms-University Bonn, An der Immenburg 4, 53121, Bonn, Germany. .,Federal Institute for Drugs and Medical Devices (BfArM), Bonn, Germany.
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27
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Smeda M, Stojak M, Przyborowski K, Sternak M, Suraj-Prazmowska J, Kus K, Derszniak K, Jasztal A, Kij A, Kurpinska A, Kieronska-Rudek A, Wojnar-Lason K, Buczek E, Mohaissen T, Chlopicki S. Direct Thrombin Inhibitor Dabigatran Compromises Pulmonary Endothelial Integrity in a Murine Model of Breast Cancer Metastasis to the Lungs; the Role of Platelets and Inflammation-Associated Haemostasis. Front Pharmacol 2022; 13:834472. [PMID: 35295330 PMCID: PMC8918823 DOI: 10.3389/fphar.2022.834472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/24/2022] [Indexed: 11/13/2022] Open
Abstract
Activation of the coagulation cascade favours metastatic spread, but antithrombotic therapy might also have detrimental effects on cancer progression. In this study, we characterized the effects of dabigatran, a direct reversible thrombin inhibitor, on the pulmonary endothelial barrier and metastatic spread in a murine model of breast cancer metastasis. Dabigatran etexilate (100 mg kg−1) was administered to mice twice daily by oral gavage. Pulmonary metastasis, pulmonary endothelium permeability in vivo, and platelet reactivity were evaluated after intravenous injection of 4T1 breast cancer cells into BALB/c mice. The effect of dabigatran on platelet-dependent protection of pulmonary endothelial barrier in the presence of an inflammatory stimulus was also verified in vitro using human lung microvascular endothelial cell (HLMVEC) cultures. Dabigatran-treated mice harbored more metastases in their lungs and displayed increased pulmonary endothelium permeability after cancer cell injection. It was not associated with altered lung fibrin deposition, changes in INFγ, or complement activation. In the in vitro model of the pulmonary endothelial barrier, dabigatran inhibited platelet-mediated protection of pulmonary endothelium. In a murine model of breast cancer metastasis, dabigatran treatment promoted pulmonary metastasis by the inhibition of platelet-dependent protection of pulmonary endothelial barrier integrity.
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Affiliation(s)
- Marta Smeda
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
- *Correspondence: Marta Smeda, ; Stefan Chlopicki,
| | - Marta Stojak
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Kamil Przyborowski
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Magdalena Sternak
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Joanna Suraj-Prazmowska
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Kamil Kus
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Katarzyna Derszniak
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
- Faculty of Chemistry, Jagiellonian University, Krakow, Poland
| | - Agnieszka Jasztal
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Agnieszka Kij
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Anna Kurpinska
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Anna Kieronska-Rudek
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
- Department of Pharmacology, Jagiellonian University Medical College, Krakow, Poland
| | - Kamila Wojnar-Lason
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
- Department of Pharmacology, Jagiellonian University Medical College, Krakow, Poland
| | - Elzbieta Buczek
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Tasnim Mohaissen
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
- Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland
| | - Stefan Chlopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
- Department of Pharmacology, Jagiellonian University Medical College, Krakow, Poland
- *Correspondence: Marta Smeda, ; Stefan Chlopicki,
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28
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Aiolfi R, Sitia G, Iannacone M, Brunetta I, Guidotti LG, Ruggeri ZM. Arenaviral infection causes bleeding in mice due to reduced serotonin release from platelets. Sci Signal 2022; 15:eabb0384. [PMID: 35192415 DOI: 10.1126/scisignal.abb0384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Bleeding correlates with disease severity in viral hemorrhagic fevers. We found that the increase in type I interferon (IFN-I) in mice caused by infection with the Armstrong strain of lymphocytic choriomeningitis virus (LCMV; an arenavirus) reduced the megakaryocytic expression of genes encoding enzymes involved in lipid biosynthesis (cyclooxygenase 1 and thromboxane A synthase 1) and a thrombopoietic transcription factor (Nf-e2). The decreased expression of these genes was associated with reduced numbers of circulating platelets and defects in the arachidonic acid synthetic pathway, thereby suppressing serotonin release from δ-granules in platelets. Bleeding resulted when severe thrombocytopenia and altered platelet function reduced the amount of platelet-derived serotonin below a critical threshold. Bleeding was facilitated by the absence of the activity of the kinase Lyn or the administration of aspirin, an inhibitor of arachidonic acid synthesis. Mouse platelets were not directly affected by IFN-I because they lack the receptor for the cytokine (IFNAR1), suggesting that transfusion of normal platelets into LCMV-infected mice could increase the amount of platelet-released serotonin and help to control hemorrhage.
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Affiliation(s)
- Roberto Aiolfi
- Department of Molecular Medicine, MERU-Roon Research Center for Vascular Biology, Scripps Research, La Jolla, CA 92037, USA.,Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Giovanni Sitia
- Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Matteo Iannacone
- Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy.,Vita-Salute San Raffaele University, Milan, Italy.,Experimental Imaging Center, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Ivan Brunetta
- Department of Molecular Medicine, MERU-Roon Research Center for Vascular Biology, Scripps Research, La Jolla, CA 92037, USA
| | - Luca G Guidotti
- Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Zaverio M Ruggeri
- Department of Molecular Medicine, MERU-Roon Research Center for Vascular Biology, Scripps Research, La Jolla, CA 92037, USA
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29
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Zhang Y, He J. Tumor vasculature-targeting nanomedicines. Acta Biomater 2021; 134:1-12. [PMID: 34271167 DOI: 10.1016/j.actbio.2021.07.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 12/15/2022]
Abstract
Uncontrolled tumor growth and subsequent distant metastasis are highly dependent on an adequate nutrient supply from tumor blood vessels, which have relatively different pathophysiological characteristics from those of normal vasculature. Obviously, strategies targeting tumor vasculature, such as anti-angiogenic drugs and vascular disrupting agents, are attractive methods for cancer therapy. However, the off-target effects and high dose administration of these drug regimens critically restrict their clinical applications. In recent years, nanomedicines focused on tumor vasculature have been shown to be superior to traditional therapeutic methods and do not induce side effects. This review will first highlight the recent development of tumor vasculature-targeting nanomedicines from the following four aspects: 1) angiogenesis-inhibiting nanomedicines (AINs); 2) vasculature-disrupting nanomedicines (VDNs); 3) vasculature infarction nanomedicines (VINs); and 4) vasculature-regulating nanomedicines (VRNs). Furthermore, the design principles, limitations, and future directions are also discussed. STATEMENT OF SIGNIFICANCE: Based on the essential roles of tumor blood vessels, the therapeutic strategies targeting tumor vasculature have exhibited good clinical therapeutic outcomes. However, poor patient adherence to free drug administration limits their clinical usage. Nanomedicines have great potential to overcome the abovementioned obstacle. This review summarizes the tumor-vasculature targeting nanomedicines from four aspects: 1) angiogenesis-inhibiting nanomedicines (AINs); 2) vasculature-disrupting nanomedicines (VDNs); 3) vasculature infarction nanomedicines (VINs); and 4) vasculature regulating nanomedicines (VRNs). In addition, this review provides perspectives on this research field.
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Affiliation(s)
- Ying Zhang
- Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, 110022, PR China
| | - Jingni He
- Department of General Surgery, Shengjing Hospital of China Medical University, No. 39 Huaxiang Road, Tiexi District, Shenyang 110022, PR China.
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30
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Perrella G, Nagy M, Watson SP, Heemskerk JWM. Platelet GPVI (Glycoprotein VI) and Thrombotic Complications in the Venous System. Arterioscler Thromb Vasc Biol 2021; 41:2681-2692. [PMID: 34496636 PMCID: PMC9653110 DOI: 10.1161/atvbaha.121.316108] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
The immunoglobulin receptor GPVI (glycoprotein VI) is selectively expressed on megakaryocytes and platelets and is currently recognized as a receptor for not only collagen but also a variety of plasma and vascular proteins, including fibrin, fibrinogen, laminin, fibronectin, and galectin-3. Deficiency of GPVI is protective in mouse models of experimental thrombosis, pulmonary thromboembolism as well as in thromboinflammation, suggesting a role of GPVI in arterial and venous thrombus formation. In humans, platelet GPVI deficiency is associated with a mild bleeding phenotype, whereas a common variant rs1613662 in the GP6 gene is considered a risk factor for venous thromboembolism. However, preclinical studies on the inhibition of GPVI-ligand interactions are focused on arterial thrombotic complications. In this review we discuss the emerging evidence for GPVI in venous thrombus formation and leukocyte-dependent thromboinflammation, extending to venous thromboembolism, pulmonary thromboembolism, and cancer metastasis. We also recapitulate indications for circulating soluble GPVI as a biomarker of thrombosis-related complications. Collectively, we conclude that the current evidence suggests that platelet GPVI is also a suitable cotarget in the prevention of venous thrombosis due to its role in thrombus consolidation and platelet-leukocyte complex formation.
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Affiliation(s)
- Gina Perrella
- Department of Biochemistry, CARIM, Maastricht University, The Netherlands (G.P., M.N., J.W.M.H.).,Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, United Kingdom (G.P., S.P.W.)
| | - Magdolna Nagy
- Department of Biochemistry, CARIM, Maastricht University, The Netherlands (G.P., M.N., J.W.M.H.)
| | - Steve P Watson
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, United Kingdom (G.P., S.P.W.).,COMPARE, Universities of Birmingham and Nottingham, The Midlands, United Kingdom (S.P.W.)
| | - Johan W M Heemskerk
- Department of Biochemistry, CARIM, Maastricht University, The Netherlands (G.P., M.N., J.W.M.H.).,Now with Synapse Research Institute, Maastricht, the Netherlands (J.W.M.H.)
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31
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Xiong W, Qi L, Si D, Jiang X, Liu Y, Zheng C, Li Y, Shen J, Zhou Z. Effective tumor vessel barrier disruption mediated by perfluoro-N-(4-methylcyclohexyl) piperidine nanoparticles to enhance the efficacy of photodynamic therapy. NANOSCALE 2021; 13:13473-13486. [PMID: 34477752 DOI: 10.1039/d1nr02880d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
BACKGROUND Currently, limited tumor drug permeation, poor oxygen perfusion and immunosuppressive microenvironments are the most important bottlenecks that significantly reduce the efficacy of photodynamic therapy (PDT). The main cause of these major bottlenecks is the platelet activation maintained abnormal tumor vessel barriers. Thus, platelet inhibition may present a new way to most effectively enhance the efficacy of PDT. However, to the best of our knowledge, few studies have validated the effectiveness of such a way in enhancing the efficacy of PDT both in vivo and in vitro. In this study, perfluoro-N-(4-methylcyclohexyl) piperidine-loaded albumin (PMP@Alb) nanoparticles were discovered, which possess excellent platelet inhibition ability. After PMP@Alb treatment, remarkably enhanced intra-tumoral drug accumulation, oxygen perfusion and T cell infiltration could be observed owing to the disrupted tumor vessel barriers. Besides, the effect of ICG@Lip mediated PDT was significantly amplified by PMP@Alb nanoparticles. It was demonstrated that PMP@Alb could be used as a useful tool to improve the efficacy of existing PDT by disrupting tumor vessel barriers through effective platelet inhibition.
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Affiliation(s)
- Wei Xiong
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China.
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32
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Preferential interaction of platelets with prostate cancer cells with stem cell markers. Thromb Res 2021; 206:42-51. [PMID: 34403851 DOI: 10.1016/j.thromres.2021.08.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 07/29/2021] [Accepted: 08/10/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Prostate cancer (PCa) may be initiated by CD133+/CD44+ expressing stem cell-like cells (PCSC), which are also thought to drive metastasis. Platelets also contribute to metastasis via tumor cell-induced platelet aggregation (TCIPA), which in part enhances cancer cell invasion. Moreover, activated platelets secrete stromal derived growth factor-1α (SDF-1α) that can mobilize CSCs via the CXCR4 receptor. However, the potential reciprocal interactions between CSCs and platelets have not been investigated. OBJECTIVE To characterize the mechanisms behind PCSC-platelet interaction. METHODS Fluorescence Activated Cell Sorting was utilized to separate DU145 and PC3 PCa cells into CD133+/CD44+, CD133+/CD44-, CD44+/CD133-, and CD133-/CD44- subpopulations and to measure their CXCR4 surface expression. PCa subpopulation TCIPA experiments were performed using aggregometry and immunoblot was used to measure prothrombin. Platelet SDF-1α secretion was measured by ELISA. Modified-Boyden chamber assays were used to assess the role of SDF-1α:CXCR4 pathway in platelet-PCSC interactions. RESULTS DU145 and PC3 expressing both CD133 and CD44 stem cell markers accounted for only small fractions of total cells (DU145: CD133+/CD44+ 3.44 ± 1.45% vs. CD133+/CD44- 1.56 ± 0.45% vs. CD44+/CD133- 68.19 ± 6.25% vs. CD133-/CD44- 20.36 ± 4.51%). However, CD133+ subpopulations induced the greatest amount of aggregation compared to CD44+/CD133- and double-negative DU145, and this aggregation potency of CD133+ PCa cells corresponded with high levels of prothrombin expression. Additionally, CD133+ subpopulations expressed significantly higher level of CXCR4 compared to CD133-/CD44- and CD44+/CD133-. Disruption of SDF-1α:CXCR4 pathway reduced platelet-induced PCSC invasion. CONCLUSIONS CD133+/CD44+ and CD133+/CD44- PCSCs have highest platelet aggregation potency, which could be attributed to their increased prothrombin expression. Reciprocally, platelet-derived SDF-1α stimulates PCSC invasion.
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33
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Effects of Cancer Presence and Therapy on the Platelet Proteome. Int J Mol Sci 2021; 22:ijms22158236. [PMID: 34361002 PMCID: PMC8347210 DOI: 10.3390/ijms22158236] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 12/27/2022] Open
Abstract
Platelets are involved in tumor angiogenesis and cancer progression. Previous studies indicated that cancer could affect platelet content. In the current study, we investigated whether cancer-associated proteins can be discerned in the platelets of cancer patients, and whether antitumor treatment may affect the platelet proteome. Platelets were isolated from nine patients with different cancer types and ten healthy volunteers. From three patients, platelets were isolated before and after the start of antitumor treatment. Mass spectrometry-based proteomics of gel-fractionated platelet proteins were used to compare patients versus controls and before and after treatment initiation. A total of 4059 proteins were detected, of which 50 were significantly more abundant in patients, and 36 more in healthy volunteers. Eight of these proteins overlapped with our previous cancer platelet proteomics study. From these data, we selected potential biomarkers of cancer including six upregulated proteins (RNF213, CTSG, PGLYRP1, RPL8, S100A8, S100A9) and two downregulated proteins (GPX1, TNS1). Antitumor treatment resulted in increased levels of 432 proteins and decreased levels of 189 proteins. In conclusion, the platelet proteome may be affected in cancer patients and platelets are a potential source of cancer biomarkers. In addition, we found in a small group of patients that anticancer treatment significantly changes the platelet proteome.
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34
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Braun A, Anders HJ, Gudermann T, Mammadova-Bach E. Platelet-Cancer Interplay: Molecular Mechanisms and New Therapeutic Avenues. Front Oncol 2021; 11:665534. [PMID: 34322381 PMCID: PMC8311658 DOI: 10.3389/fonc.2021.665534] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 06/17/2021] [Indexed: 12/18/2022] Open
Abstract
Although platelets are critically involved in thrombosis and hemostasis, experimental and clinical evidence indicate that platelets promote tumor progression and metastasis through a wide range of physical and functional interactions between platelets and cancer cells. Thrombotic and thromboembolic events are frequent complications in patients with solid tumors. Hence, cancer modulates platelet function by directly inducing platelet-tumor aggregates and triggering platelet granule release and altering platelet turnover. Also, platelets enhance tumor cell dissemination by activating endothelial cell function and recruiting immune cells to primary and metastatic tumor sites. In this review, we summarize current knowledge on the complex interactions between platelets and tumor cells and the host microenvironment. We also critically discuss the potential of anti-platelet agents for cancer prevention and treatment.
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Affiliation(s)
- Attila Braun
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilian-University, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Hans-Joachim Anders
- Division of Nephrology, Department of Medicine IV, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Thomas Gudermann
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilian-University, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Elmina Mammadova-Bach
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilian-University, Member of the German Center for Lung Research (DZL), Munich, Germany.,Division of Nephrology, Department of Medicine IV, Ludwig-Maximilians-University Hospital, Munich, Germany
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35
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Sabrkhany S, Kuijpers MJE, Oude Egbrink MGA, Griffioen AW. Platelets as messengers of early-stage cancer. Cancer Metastasis Rev 2021; 40:563-573. [PMID: 33634328 PMCID: PMC8213673 DOI: 10.1007/s10555-021-09956-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/28/2021] [Indexed: 12/14/2022]
Abstract
Platelets have an important role in tumor angiogenesis, growth, and metastasis. The reciprocal interaction between cancer and platelets results in changes of several platelet characteristics. It is becoming clear that analysis of these platelet features could offer a new strategy in the search for biomarkers of cancer. Here, we review the human studies in which platelet characteristics (e.g., count, volume, protein, and mRNA content) are investigated in early-stage cancer. The main focus of this paper is to evaluate which platelet features are suitable for the development of a blood test that could detect cancer in its early stages.
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Affiliation(s)
- Siamack Sabrkhany
- Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Marijke J E Kuijpers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Mirjam G A Oude Egbrink
- Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Arjan W Griffioen
- Angiogenesis Laboratory, Cancer Center Amsterdam, Department of Medical Oncology, VU University Medical Center, Amsterdam UMC, Amsterdam, The Netherlands.
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36
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Hoover C, Kondo Y, Shao B, McDaniel MJ, Lee R, McGee S, Whiteheart S, Bergmeier W, McEver RP, Xia L. Heightened activation of embryonic megakaryocytes causes aneurysms in the developing brain of mice lacking podoplanin. Blood 2021; 137:2756-2769. [PMID: 33619517 PMCID: PMC8138551 DOI: 10.1182/blood.2020010310] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 02/06/2021] [Indexed: 12/29/2022] Open
Abstract
During early embryonic development in mammals, including humans and mice, megakaryocytes (Mks) first originate from primitive hematopoiesis in the yolk sac. These embryonic Mks (eMks) circulate in the vasculature with unclear function. Herein, we report that podoplanin (PDPN), the ligand of C-type lectin-like receptor (CLEC-2) on Mks/platelets, is temporarily expressed in neural tissue during midgestation in mice. Loss of PDPN or CLEC-2 resulted in aneurysms and spontaneous hemorrhage, specifically in the lower diencephalon during midgestation. Surprisingly, more eMks/platelets had enhanced granule release and localized to the lower diencephalon in mutant mouse embryos than in wild-type littermates before hemorrhage. We found that PDPN counteracted the collagen-1-induced secretion of angiopoietin-1 from fetal Mks, which coincided with enhanced TIE-2 activation in aneurysm-like sprouts of PDPN-deficient embryos. Blocking platelet activation prevented the PDPN-deficient embryo from developing vascular defects. Our data reveal a new role for PDPN in regulating eMk function during midgestation.
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MESH Headings
- Aneurysm, Ruptured/embryology
- Aneurysm, Ruptured/etiology
- Angiopoietin-1/metabolism
- Animals
- Brain/blood supply
- Brain/embryology
- Cells, Cultured
- Cerebral Hemorrhage/embryology
- Cerebral Hemorrhage/etiology
- Collagen/pharmacology
- Diencephalon/blood supply
- Diencephalon/embryology
- Gene Expression Regulation, Developmental
- Gestational Age
- Intracranial Aneurysm/embryology
- Intracranial Aneurysm/etiology
- Intracranial Aneurysm/genetics
- Intracranial Aneurysm/pathology
- Lectins, C-Type/deficiency
- Lectins, C-Type/genetics
- Lectins, C-Type/physiology
- Megakaryocytes/metabolism
- Megakaryocytes/pathology
- Membrane Glycoproteins/deficiency
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/physiology
- Mice
- Mice, Knockout
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/physiopathology
- Neovascularization, Physiologic/physiology
- Platelet Activation
- Platelet Aggregation/drug effects
- Platelet Aggregation Inhibitors/pharmacology
- Receptor, TIE-2/metabolism
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Affiliation(s)
- Christopher Hoover
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - Yuji Kondo
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Bojing Shao
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Michael J McDaniel
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Robert Lee
- Department of Biochemistry and Biophysics-UNC Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC; and
| | - Samuel McGee
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Sidney Whiteheart
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY
| | - Wolfgang Bergmeier
- Department of Biochemistry and Biophysics-UNC Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC; and
| | - Rodger P McEver
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - Lijun Xia
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK
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37
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Ho-Tin-Noé B, Le Chapelain O, Camerer E. Platelets maintain vascular barrier function in the absence of injury or inflammation. J Thromb Haemost 2021; 19:1145-1148. [PMID: 33595179 DOI: 10.1111/jth.15240] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 01/05/2021] [Indexed: 11/27/2022]
Affiliation(s)
- Benoit Ho-Tin-Noé
- Laboratory of Vascular Translational Science, U1148 Institut National de la Santé et de la Recherche Médicale (INSERM, Université de Paris, Paris, France
| | - Ophélie Le Chapelain
- Laboratory of Vascular Translational Science, U1148 Institut National de la Santé et de la Recherche Médicale (INSERM, Université de Paris, Paris, France
| | - Eric Camerer
- Université de Paris, Paris Cardiovascular Research Centre, INSERM U970, Paris, France
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38
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Platelets docking to VWF prevent leaks during leukocyte extravasation by stimulating Tie-2. Blood 2021; 136:627-639. [PMID: 32369573 DOI: 10.1182/blood.2019003442] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 04/14/2020] [Indexed: 12/19/2022] Open
Abstract
Neutrophil extravasation requires opening of the endothelial barrier but does not necessarily cause plasma leakage. Leaks are prevented by contractile actin filaments surrounding the diapedesis pore, keeping this opening tightly closed around the transmigrating neutrophils. We have identified the receptor system that is responsible for this. We show that silencing, or gene inactivation, of endothelial Tie-2 results in leak formation in postcapillary venules of the inflamed cremaster muscle at sites of neutrophil extravasation, as visualized by fluorescent microspheres. Leakage was dependent on neutrophil extravasation, because it was absent upon neutrophil depletion. We identified the Cdc42 GTPase exchange factor FGD5 as a downstream target of Tie-2 that is essential for leakage prevention during neutrophil extravasation. Looking for the Tie-2 agonist and its source, we found that platelet-derived angiopoietin-1 (Angpt1) was required to prevent neutrophil-induced leaks. Intriguingly, blocking von Willebrand factor (VWF) resulted in vascular leaks during transmigration, indicating that platelets interacting with endothelial VWF activate Tie-2 by secreting Angpt1, thereby preventing diapedesis-induced leakiness.
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39
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Abstract
Thrombocytopenia-induced tumor hemorrhage improves drug delivery to tumors. This phenomenon presents a new way to increase drug efficacy with minimal side effects. Combining anti-platelet treatment with therapeutic drugs may help us in the search for more effective ways to fight cancer.
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Affiliation(s)
- Mélanie Demers
- Immune Disease Institute; Program in Cellular and Molecular Medicine; Children's Hospital Boston; Department of Pediatrics; Harvard Medical School; Boston, MA USA
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40
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Zhang Y, Han X, Nie G. Responsive and activable nanomedicines for remodeling the tumor microenvironment. Nat Protoc 2021; 16:405-430. [PMID: 33311713 DOI: 10.1038/s41596-020-00421-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 09/23/2020] [Indexed: 01/19/2023]
Abstract
Here we describe two protocols for the construction of responsive and activable nanomedicines that regulate the tumor microenvironment (TME). The TME is composed of all non-cellular and cellular components surrounding a tumor, including the surrounding blood vessels, immune cells, fibroblasts, signaling molecules, and extracellular matrix and has a crucial role in tumor initiation, growth, and metastasis. Owing to the relatively stable properties of the TME compared to tumor cells, which exhibit frequent genetic mutations and epigenetic changes, therapeutic strategies targeting the TME using multifunctional nanomedicines hold great potential for anti-tumor therapy. By regulating tumor-associated platelets and pancreatic stellate cells (PSCs), the two major players in the TME, we can effectively manipulate the physiological barriers for enhanced drug delivery and significantly improve the tumor penetration and therapeutic efficacy of chemotherapeutics. The preparation and characterization of the multifunctional nanoparticles takes ~10 h for tumor-associated platelet regulation and 16 h for PSC regulation. These nanoformulations can be readily applied to regulate other components in the TME to realize synergistic or additive anti-tumor activity.
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Affiliation(s)
- Yinlong Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Xuexiang Han
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China.
- GBA Research Innovation Institute for Nanotechnology, Guangdong, China.
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41
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Cao J, Yang P, Wang P, Xu S, Cheng Y, Qian K, Xu M, Sheng D, Li Y, Wei Y, Zhang Q. 'Adhesion and release' nanoparticle-mediated efficient inhibition of platelet activation disrupts endothelial barriers for enhanced drug delivery in tumors. Biomaterials 2020; 269:120620. [PMID: 33421709 DOI: 10.1016/j.biomaterials.2020.120620] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 12/10/2020] [Accepted: 12/17/2020] [Indexed: 12/14/2022]
Abstract
Activated platelets can maintain tumor vessel integrity, thereby leading to limited tumor perfusion and suboptimal antitumor efficacy of nanoparticle-based drugs. Herein, to disrupt the tumor vascular endothelial barriers by inhibiting the transformation of resting platelets to activated platelets, a TM33 peptide-modified gelatin/oleic acid nanoparticle loaded with tanshinone IIA (TNA) was constructed (TM33-GON/TNA). TM33-GON/TNA could adhere to activated platelets by specifically binding their superficial P-selectin and release TNA into the extracellular space under matrix metalloproteinase-2 (MMP-2) stimulation, leading to local high TNA exposure. Thus, platelet activation, adhesion, and aggregation, which occur in the local environment around the activated platelets, were efficiently inhibited, leading to leaky tumor endothelial junctions. Accordingly, TM33-GON/TNA treatment resulted in a 3.2-, 4.0-, and 11.2-fold increase in tumor permeation of Evans blue (macromolecule marker), small-sized Nab-PTX (~10 nm), and large-sized DOX-Lip (~100 nm), respectively, without elevating drug delivery to normal tissues. Ultimately, TM33-GON/TNA plus Nab-PTX exhibited superior antitumor efficacy with minimal side effects in a murine pancreatic cancer model. In addition, the TM33-GON/TNA-induced disrupted endothelial junctions were reversibly restored after the treatment because the number of platelets was not reduced, which implies a low risk of the undesirable systemic bleeding. Hence, TM33-GON/TNA represents a clinically translational adjuvant therapy to magnify the antitumor efficacy of existing nanomedicines in pancreatic cancer and other tumors with tight endothelial lining.
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Affiliation(s)
- Jinxu Cao
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Peng Yang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Pengzhen Wang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Shuting Xu
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yunlong Cheng
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Kang Qian
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Minjun Xu
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Dongyu Sheng
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yixian Li
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yan Wei
- Institute of Translational Medicine, Shanghai University, Shanghai, 200436, China.
| | - Qizhi Zhang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, 201203, China.
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42
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Zaslavsky AB, Adams MP, Cao X, Maj T, Choi JE, Stangl-Kremser J, Patel S, Putelo A, Lee SK, Nallandhighal S, Kasputis A, Alva A, Lew M, Qin A, Mehra R, Morgan TM, Salami SS, Reichert Z, Udager A, Zou W, Palapattu GS. Platelet PD-L1 suppresses anti-cancer immune cell activity in PD-L1 negative tumors. Sci Rep 2020; 10:19296. [PMID: 33168847 PMCID: PMC7652857 DOI: 10.1038/s41598-020-76351-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 10/26/2020] [Indexed: 12/11/2022] Open
Abstract
Strategies that interfere with the binding of the receptor programmed cell death protein-1 (PD-1) to programmed death ligand-1 (PD-L1) have shown marked efficacy against many advanced cancers, including those that are negative for PD-L1. Precisely why patients with PD-L1 negative tumors respond to PD-1/PD-L1 checkpoint inhibition remains unclear. Here, we show that platelet-derived PD-L1 regulates the growth of PD-L1 negative tumors and that interference with platelet binding to PD-L1 negative cancer cells promotes T cell-induced cancer cytotoxicity. These results suggest that the successful outcomes of PD-L1 based therapies in patients with PD-L1 negative tumors may be explained, in part, by the presence of intra-tumoral platelets. Altogether, our findings demonstrate the impact of non-cancer/non-immune cell sources of PD-L1 in the tumor microenvironment in the promotion of cancer cell immune evasion. Our study also provides a compelling rationale for future testing of PD-L1 checkpoint inhibitor therapies in combination with antiplatelet agents, in patients with PD-L1 negative tumors.
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Affiliation(s)
- Alexander B Zaslavsky
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA.
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA.
| | - M P Adams
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - X Cao
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - T Maj
- Department of Internal Medicine, Division of Hematology/Oncology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - J E Choi
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
- Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, USA
- Michigan Center for Translational Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - J Stangl-Kremser
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Department of Urology, Medical University of Vienna, Vienna, Austria
| | - S Patel
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - A Putelo
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - S K Lee
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - S Nallandhighal
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - A Kasputis
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - A Alva
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
- Department of Internal Medicine, Division of Hematology/Oncology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - M Lew
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - A Qin
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
- Department of Internal Medicine, Division of Hematology/Oncology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - R Mehra
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - T M Morgan
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - S S Salami
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - Z Reichert
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
- Department of Internal Medicine, Division of Hematology/Oncology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - A Udager
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - W Zou
- Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Ganesh S Palapattu
- Department of Urology, University of Michigan Medical School, 3875 Taubman Center, 1500 E. Medical Center Dr., Ann Arbor, MI, USA.
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA.
- Department of Urology, Medical University of Vienna, Vienna, Austria.
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43
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Sun X, Ni N, Ma Y, Wang Y, Leong DT. Retooling Cancer Nanotherapeutics' Entry into Tumors to Alleviate Tumoral Hypoxia. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2003000. [PMID: 32803846 DOI: 10.1002/smll.202003000] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/20/2020] [Indexed: 06/11/2023]
Abstract
Anti-hypoxia cancer nanomedicine (AHCN) holds exciting potential in improving oxygen-dependent therapeutic efficiencies of malignant tumors. However, most studies regarding AHCN focus on optimizing structure and function of nanomaterials with presupposed successful entry into tumor cells. From such a traditional perspective, the main barrier that AHCN needs to overcome is mainly the tumor cell membrane. However, such an oversimplified perspective would neglect that real tumors have many biological, physiological, physical, and chemical defenses preventing the current state-of-the-art AHCNs from even reaching the targeted tumor cells. Fortunately, in recent years, some studies are beginning to intentionally focus on overcoming physiological barriers to alleviate hypoxia. In this Review, the limitations behind the traditional AHCN delivery mindset are addressed and the key barriers that need to be surmounted before delivery to cancer cells and some good ways to improve cell membrane attachment, internalization, and intracellular retention are summarized. It is aimed to contribute to Review literature on this emerging topic through refreshing perspectives based on this work and what is also learnt from others. This Review would therefore assist AHCNs researchers to have a quick overview of the essential information and glean thought-provoking ideas to advance this sub-field in cancer nanomedicine.
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Affiliation(s)
- Xiao Sun
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Nengyi Ni
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Yanling Ma
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Yan Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - David Tai Leong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
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44
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Lucotti S, Muschel RJ. Platelets and Metastasis: New Implications of an Old Interplay. Front Oncol 2020; 10:1350. [PMID: 33042789 PMCID: PMC7530207 DOI: 10.3389/fonc.2020.01350] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/26/2020] [Indexed: 12/17/2022] Open
Abstract
During the process of hematogenous metastasis, tumor cells interact with platelets and their precursors megakaryocytes, providing a selection driver for the metastatic phenotype. Cancer cells have evolved a plethora of mechanisms to engage platelet activation and aggregation. Platelet coating of tumor cells in the blood stream promotes the successful completion of multiple steps of the metastatic cascade. Along the same lines, clinical evidence suggests that anti-coagulant therapy might be associated with reduced risk of metastatic disease and better prognosis in cancer patients. Here, we review experimental and clinical literature concerning the contribution of platelets and megakaryocytes to cancer metastasis and provide insights into the clinical relevance of anti-coagulant therapy in cancer treatment.
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Affiliation(s)
- Serena Lucotti
- Children's Cancer and Blood Foundation Laboratories, Departments of Pediatrics, and Cell and Developmental Biology, Drukier Institute for Children's Health, Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| | - Ruth J Muschel
- Cancer Research UK and MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, United Kingdom
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45
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Vinholt PJ. The role of platelets in bleeding in patients with thrombocytopenia and hematological disease. Clin Chem Lab Med 2020; 57:1808-1817. [PMID: 31465290 DOI: 10.1515/cclm-2019-0380] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/29/2019] [Indexed: 01/19/2023]
Abstract
This review evaluates the role of platelets in bleeding risk among patients with hematological disease and thrombocytopenia. Platelets are pivotal in primary hemostasis, and possess non-hemostatic properties involved in angiogenesis, tissue repair, inflammation and metastatis. Also, platelets safeguard vascular integrity in inflamed vessels. Overall, bleeding risk depends on the underlying disease, and patients with cancer and platelet count <6-10 × 109/L have a markedly increased bleeding risk, while the platelet count does not correlate with bleeding risk at higher platelet counts. Other factors might affect platelet properties and thus bleeding risk, for example, drugs, low hematocrit, coagulation system impairments or transfusion of dysfunctional donor platelets. For patients with leukemia and immune thrombocytopenia, reduced platelet activation, platelet aggregation, or thrombopoiesis, reflected by the reduced presence of reticulated platelets, are associated with bleeding phenotype. However, mechanistic insight into the cause of reduced platelet function in different thrombocytopenic conditions is sparse, except for some inherited platelet disorders. Promising tools for platelet function studies in thrombocytopenia are flow cytometry and biomarker studies on platelet constituents. An important message from this current paper is that bleeding risk assessment must be tailored to specific patient populations and cannot be applied broadly to all patients with thrombocytopenia.
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Affiliation(s)
- Pernille J Vinholt
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, J.B. Winsløws vej 4B, 5000 Odense C, Denmark.,University of Southern Denmark, Odense, Denmark
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46
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Dib PRB, Quirino-Teixeira AC, Merij LB, Pinheiro MBM, Rozini SV, Andrade FB, Hottz ED. Innate immune receptors in platelets and platelet-leukocyte interactions. J Leukoc Biol 2020; 108:1157-1182. [PMID: 32779243 DOI: 10.1002/jlb.4mr0620-701r] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/11/2020] [Accepted: 06/28/2020] [Indexed: 12/14/2022] Open
Abstract
Platelets are chief cells in hemostasis. Apart from their hemostatic roles, platelets are major inflammatory effector cells that can influence both innate and adaptive immune responses. Activated platelets have thromboinflammatory functions linking hemostatic and immune responses in several physiological and pathological conditions. Among many ways in which platelets exert these functions, platelet expression of pattern recognition receptors (PRRs), including TLR, Nod-like receptor, and C-type lectin receptor families, plays major roles in sensing and responding to pathogen-associated or damage-associated molecular patterns (PAMPs and DAMPs, respectively). In this review, an increasing body of evidence is compiled showing the participation of platelet innate immune receptors, including PRRs, in infectious diseases, sterile inflammation, and cancer. How platelet recognition of endogenous DAMPs participates in sterile inflammatory diseases and thrombosis is discussed. In addition, platelet recognition of both PAMPs and DAMPs initiates platelet-mediated inflammation and vascular thrombosis in infectious diseases, including viral, bacterial, and parasite infections. The study also focuses on the involvement of innate immune receptors in platelet activation during cancer, and their contribution to tumor microenvironment development and metastasis. Finally, how innate immune receptors participate in platelet communication with leukocytes, modulating leukocyte-mediated inflammation and immune functions, is highlighted. These cell communication processes, including platelet-induced release of neutrophil extracellular traps, platelet Ag presentation to T-cells and platelet modulation of monocyte cytokine secretion are discussed in the context of infectious and sterile diseases of major concern in human health, including cardiovascular diseases, dengue, HIV infection, sepsis, and cancer.
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Affiliation(s)
- Paula Ribeiro Braga Dib
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil.,Laboratory of Immunology, Infectious Diseases and Obesity, Department of Parasitology, Microbiology and Immunology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Anna Cecíllia Quirino-Teixeira
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Laura Botelho Merij
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Mariana Brandi Mendonça Pinheiro
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Stephane Vicente Rozini
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Fernanda Brandi Andrade
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Eugenio Damaceno Hottz
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
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Combes F, Meyer E, Sanders NN. Immune cells as tumor drug delivery vehicles. J Control Release 2020; 327:70-87. [PMID: 32735878 DOI: 10.1016/j.jconrel.2020.07.043] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 12/21/2022]
Abstract
This review article describes the use of immune cells as potential candidates to deliver anti-cancer drugs deep within the tumor microenvironment. First, the rationale of using drug carriers to target tumors and potentially decrease drug-related side effects is discussed. We further explain some of the current limitations when using nanoparticles for this purpose. Next, a comprehensive step-by-step description of the migration cascade of immune cells is provided as well as arguments on why immune cells can be used to address some of the limitations associated with nanoparticle-mediated drug delivery. We then describe the benefits and drawbacks of using red blood cells, platelets, granulocytes, monocytes, macrophages, myeloid-derived suppressor cells, T cells and NK cells for tumor-targeted drug delivery. An additional section discusses the versatility of nanoparticles to load anti-cancer drugs into immune cells. Lastly, we propose increasing the circulatory half-life and development of conditional release strategies as the two main future pillars to improve the efficacy of immune cell-mediated drug delivery to tumors.
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Affiliation(s)
- Francis Combes
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, 9820 Merelbeke, Belgium; Cancer Research Institute Ghent (CRIG), 9000 Ghent, Belgium
| | - Evelyne Meyer
- Cancer Research Institute Ghent (CRIG), 9000 Ghent, Belgium; Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Niek N Sanders
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, 9820 Merelbeke, Belgium; Cancer Research Institute Ghent (CRIG), 9000 Ghent, Belgium.
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48
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Zhang Y, Cedervall J, Hamidi A, Herre M, Viitaniemi K, D'Amico G, Miao Z, Unnithan RVM, Vaccaro A, van Hooren L, Georganaki M, Thulin Å, Qiao Q, Andrae J, Siegbahn A, Heldin CH, Alitalo K, Betsholtz C, Dimberg A, Olsson AK. Platelet-Specific PDGFB Ablation Impairs Tumor Vessel Integrity and Promotes Metastasis. Cancer Res 2020; 80:3345-3358. [PMID: 32586981 DOI: 10.1158/0008-5472.can-19-3533] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 04/24/2020] [Accepted: 06/17/2020] [Indexed: 11/16/2022]
Abstract
Platelet-derived growth factor B (PDGFB) plays a crucial role in recruitment of PDGF receptor β-positive pericytes to blood vessels. The endothelium is an essential source of PDGFB in this process. Platelets constitute a major reservoir of PDGFB and are continuously activated in the tumor microenvironment, exposing tumors to the plethora of growth factors contained in platelet granules. Here, we show that tumor vascular function, as well as pericyte coverage is significantly impaired in mice with conditional knockout of PDGFB in platelets. A lack of PDGFB in platelets led to enhanced hypoxia and epithelial-to-mesenchymal transition in the primary tumors, elevated levels of circulating tumor cells, and increased spontaneous metastasis to the liver or lungs in two mouse models. These findings establish a previously unknown role for platelet-derived PDGFB, whereby it promotes and maintains vascular integrity in the tumor microenvironment by contributing to the recruitment of pericytes. SIGNIFICANCE: Conditional knockout of PDGFB in platelets demonstrates its previously unknown role in the maintenance of tumor vascular integrity and host protection against metastasis.
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Affiliation(s)
- Yanyu Zhang
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden
| | - Jessica Cedervall
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden
| | - Anahita Hamidi
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden
| | - Melanie Herre
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden
| | - Kati Viitaniemi
- Wihuri Research Institute and Translational Cancer Medicine Research Program, Biomedicum Helsinki, 00014 University of Helsinki, Yliopistonkatu, Helsinki, Finland
| | - Gabriela D'Amico
- Wihuri Research Institute and Translational Cancer Medicine Research Program, Biomedicum Helsinki, 00014 University of Helsinki, Yliopistonkatu, Helsinki, Finland
| | - Zuoxiu Miao
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden
| | - Ragaseema Valsala Madhavan Unnithan
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden.,Department of Biotechnology, Govt. Arts College, Thiruvananthapuram, India
| | - Alessandra Vaccaro
- Department of Immunology, Genetics and Pathology, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Luuk van Hooren
- Department of Immunology, Genetics and Pathology, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Maria Georganaki
- Department of Immunology, Genetics and Pathology, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Åsa Thulin
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Qi Qiao
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden
| | - Johanna Andrae
- Department of Immunology, Genetics and Pathology, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Agneta Siegbahn
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Carl-Henrik Heldin
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden
| | - Kari Alitalo
- Wihuri Research Institute and Translational Cancer Medicine Research Program, Biomedicum Helsinki, 00014 University of Helsinki, Yliopistonkatu, Helsinki, Finland
| | - Christer Betsholtz
- Department of Immunology, Genetics and Pathology, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden.,ICMC (Integrated Cardio Metabolic Centre), Karolinska Institutet, Novum, Blickagången 6, Huddinge, Sweden
| | - Anna Dimberg
- Department of Immunology, Genetics and Pathology, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Anna-Karin Olsson
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Biomedical Center, Uppsala, Sweden.
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49
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Paul DS, Bergmeier W. Novel Mouse Model for Studying Hemostatic Function of Human Platelets. Arterioscler Thromb Vasc Biol 2020; 40:1891-1904. [PMID: 32493172 DOI: 10.1161/atvbaha.120.314304] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Platelets are critical to the formation of a hemostatic plug and the pathogenesis of atherothrombosis. Preclinical animal models, especially the mouse, provide an important platform to assess the efficacy and safety of antiplatelet drugs. However, these studies are limited by inherent differences between human and mouse platelets and the species-selectivity of many drugs. To circumvent these limitations, we developed a new protocol for the adoptive transfer of human platelets into thrombocytopenic nonobese diabetic/severe combined immune deficiency mice, that is, a model where all endogenous platelets are replaced by human platelets in mice accepting xenogeneic tissues. Approach and Results: To demonstrate the power of this new model, we visualized and quantified hemostatic plug formation and stability by intravital spinning disk confocal microscopy following laser ablation injury to the saphenous vein. Integrin αIIbβ3-dependent hemostatic platelet plug formation was achieved within ≈30 seconds after laser ablation injury in humanized platelet mice. Pretreatment of mice with standard dual antiplatelet therapy (Aspirin+Ticagrelor) or PAR1 inhibitor, L-003959712 (an analog of vorapaxar), mildly prolonged the bleeding time and significantly reduced platelet adhesion to the site of injury. Consistent with findings from clinical trials, inhibition of PAR1 in combination with dual antiplatelet therapy markedly prolonged bleeding time in humanized platelet mice. CONCLUSIONS We propose that this novel mouse model will provide a robust platform to test and predict the safety and efficacy of experimental antiplatelet drugs and to characterize the hemostatic function of synthetic, stored and patient platelets.
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Affiliation(s)
- David S Paul
- From the Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill (D.S.P., W.B.).,UNC Blood Research Center, University of North Carolina, Chapel Hill (D.S.P., W.B.)
| | - Wolfgang Bergmeier
- From the Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill (D.S.P., W.B.).,UNC Blood Research Center, University of North Carolina, Chapel Hill (D.S.P., W.B.)
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50
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Abstract
Tumour vasculature supports the growth and progression of solid cancers with both angiogenesis (endothelial cell proliferation) and vasculogenic mimicry (VM, the formation of vascular structures by cancer cells themselves) predictors of poor patient outcomes. Increased circulating platelet counts also predict poor outcome for cancer patients but the influence of platelets on tumour vasculature is incompletely understood. Herein, we show with in vitro assays that platelets did not influence angiogenesis but did actively inhibit VM formation by cancer cell lines. Both platelet sized beads and the releasates from platelets were partially effective at inhibiting VM formation suggesting that direct contact maximises the effect. Platelets also promoted cancer cell invasion in vitro. B16F10 melanomas in Bcl-xPlt20/Plt20 thrombocytopenic mice showed a higher content of VM than their wildtype counterparts while angiogenesis did not differ. In a xenograft mouse model of breast cancer with low-dose aspirin to inactivate the platelets, the burden of MDA-MB-231-LM2 breast cancer cells was reduced and the gene expression profile of the cancer cells was altered; but no effect on tumour vasculature was observed. Taken together, this study provides new insights into the action of platelets on VM formation and their involvement in cancer progression.
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