1
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Pedersen OB, Hvas AM, Nissen PH, Pasalic L, Kristensen SD, Grove EL. Immature platelets and platelet reactivity in patients with acute ST-segment Elevation Myocardial Infarction using whole blood flow cytometry with SYTO-13 staining. Thromb Res 2024; 237:100-107. [PMID: 38579511 DOI: 10.1016/j.thromres.2024.03.028] [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: 12/01/2023] [Revised: 03/05/2024] [Accepted: 03/27/2024] [Indexed: 04/07/2024]
Abstract
BACKGROUND Reduced effect of antiplatelet therapy has been reported in patients with ST-segment elevation myocardial infarction (STEMI). Multiple factors may concur to explain this, including increased amount of highly reactive immature platelets. OBJECTIVES To investigate the association between immature platelets and reactivity determined with multicolour flow cytometry using the SYTO-13 dye in STEMI patients. METHODS We conducted an observational study of 59 patients with acute STEMI. Blood samples were obtained within 24 h after admission and after loading doses of dual antiplatelet therapy. For comparison, samples were obtained from 50 healthy individuals. Immature platelets and platelet reactivity were investigated using multicolour flow cytometry including the SYTO-13 dye that binds to platelet RNA and thus provides a method for subdividing platelets into immature and mature platelets. Additionally, we assessed platelet aggregation, serum-thromboxane B2 levels and standard immature platelet markers. RESULTS Immature platelets were more reactive than mature platelets in both STEMI patients and healthy individuals (p-values < 0.05). STEMI patients had lower platelet aggregation and thromboxane B2 levels than healthy individuals. We found a positive association between automatically determined immature platelet markers and CD63 expression on activated platelets (Spearman's rho: 0.27 to 0.58, p-values < 0.05). CONCLUSIONS Our study shows that immature platelets identified with a multicolour flow cytometric method using the SYTO-13 dye are more reactive than mature platelets in patients with acute STEMI and in healthy individuals. The presence of immature platelets may be important for the overall platelet reactivity, which may have implications for the effect of antiplatelet therapy.
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Affiliation(s)
- Oliver Buchhave Pedersen
- Thrombosis and Haemostasis Research Unit, Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark; Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark.
| | | | - Peter H Nissen
- Thrombosis and Haemostasis Research Unit, Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Leonardo Pasalic
- Institute of Clinical Pathology and Medical Research, Westmead Hospital, NSW Health Pathology, Sydney, Australia; Westmead Clinical School, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Steen Dalby Kristensen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Erik Lerkevang Grove
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
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2
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Thom CS, Davenport P, Fazelinia H, Soule-Albridge E, Liu ZJ, Zhang H, Feldman HA, Ding H, Roof J, Spruce LA, Ischiropoulos H, Sola-Visner M. Quantitative label-free mass spectrometry reveals content and signaling differences between neonatal and adult platelets. J Thromb Haemost 2024; 22:1447-1462. [PMID: 38160730 PMCID: PMC11055671 DOI: 10.1016/j.jtha.2023.12.022] [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: 06/30/2023] [Revised: 12/04/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Recent clinical studies have shown that transfusions of adult platelets increase morbidity and mortality in preterm infants. Neonatal platelets are hyporesponsive to agonist stimulation, and emerging evidence suggests developmental differences in platelet immune functions. OBJECTIVES This study was designed to compare the proteome and phosphoproteome of resting adult and neonatal platelets. METHODS We isolated resting umbilical cord blood-derived platelets from healthy full-term neonates (n = 8) and resting blood platelets from healthy adults (n = 6) and compared protein and phosphoprotein contents using data-independent acquisition mass spectrometry. RESULTS We identified 4770 platelet proteins with high confidence across all samples. Adult and neonatal platelets were clustered separately by principal component analysis. Adult platelets were significantly enriched in immunomodulatory proteins, including β2 microglobulin and CXCL12, whereas neonatal platelets were enriched in ribosomal components and proteins involved in metabolic activities. Adult platelets were enriched in phosphorylated GTPase regulatory enzymes and proteins participating in trafficking, which may help prime them for activation and degranulation. Neonatal platelets were enriched in phosphorylated proteins involved in insulin growth factor signaling. CONCLUSION Using label-free data-independent acquisition mass spectrometry, our findings expanded the known neonatal platelet proteome and identified important differences in protein content and phosphorylation between neonatal and adult platelets. These developmental differences suggested enhanced immune functions for adult platelets and presence of molecular machinery related to platelet activation. These findings are important to understanding mechanisms underlying key platelet functions as well as the harmful effects of adult platelet transfusions given to preterm infants.
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Affiliation(s)
- Christopher S Thom
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
| | - Patricia Davenport
- Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Hossein Fazelinia
- Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Erin Soule-Albridge
- Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Zhi-Jian Liu
- Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Haorui Zhang
- Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Henry A Feldman
- Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts, USA; Institutional Centers for Clinical and Translational Research, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Hua Ding
- Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Jennifer Roof
- Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Lynn A Spruce
- Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Harry Ischiropoulos
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA; Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania, USA
| | - Martha Sola-Visner
- Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.
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3
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Portier I, Rondina MT. Platelets, plasma, and proteostasis: a translation tightrope. Blood Adv 2024; 8:1567-1569. [PMID: 38530305 PMCID: PMC10982960 DOI: 10.1182/bloodadvances.2023012401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024] Open
Affiliation(s)
- Irina Portier
- Molecular Medicine Program, The University of Utah, Salt Lake City, UT
| | - Matthew T Rondina
- Molecular Medicine Program, The University of Utah, Salt Lake City, UT
- Division of Microbiology and Immunology, Department of Pathology, The University of Utah, Salt Lake City, UT
- Division of Hematology and Hematologic Malignancies, Department of Internal Medicine, The University of Utah, Salt Lake City, UT
- Department of Internal Medicine and the Geriatric Research, Education, and Clinical Center, George E. Wahlen Veterans Affairs Medical Center, Salt Lake City, UT
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4
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Wurtzel JGT, Lazar S, Askari S, Zhao X, Severa J, Ayombil F, Michael JV, Camire RM, McKenzie SE, Stalker TJ, Ma P, Goldfinger LE. Plasma growth factors maintain constitutive translation in platelets to regulate reactivity and thrombotic potential. Blood Adv 2024; 8:1550-1566. [PMID: 38163324 PMCID: PMC10982986 DOI: 10.1182/bloodadvances.2023011734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/14/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024] Open
Abstract
ABSTRACT Mechanisms of proteostasis in anucleate circulating platelets are unknown and may regulate platelet function. We investigated the hypothesis that plasma-borne growth factors/hormones (GFHs) maintain constitutive translation in circulating platelets to facilitate reactivity. Bio-orthogonal noncanonical amino acid tagging (BONCAT) coupled with liquid chromatography-tandem mass spectrometry analysis revealed constitutive translation of a broad-spectrum translatome in human platelets dependent upon plasma or GFH exposure, and in murine circulation. Freshly isolated platelets from plasma showed homeostatic activation of translation-initiation signaling pathways: phosphorylation of p38/ERK upstream kinases, essential intermediate MNK1/2, and effectors eIF4E/4E-BP1. Plasma starvation led to loss of pathway phosphorylation, but it was fully restored with 5-minute stimulation by plasma or GFHs. Cycloheximide or puromycin infusion suppressed ex vivo platelet GpIIb/IIIa activation and P-selectin exposure with low thrombin concentrations and low-to-saturating concentrations of adenosine 5'-diphosphate (ADP) or thromboxane analog but not convulxin. ADP-induced thromboxane generation was blunted by translation inhibition, and secondary-wave aggregation was inhibited in a thromboxane-dependent manner. Intravenously administered puromycin reduced injury-induced clot size in cremaster muscle arterioles, and delayed primary hemostasis after tail tip amputation but did not delay neither final hemostasis after subsequent rebleeds, nor final hemostasis after jugular vein puncture. In contrast, these mice were protected from injury-induced arterial thrombosis and thrombin-induced pulmonary thromboembolism (PE), and adoptive transfer of translation-inhibited platelets into untreated mice inhibited arterial thrombosis and PE. Thus, constitutive plasma GFH-driven translation regulates platelet G protein-coupled receptor reactivity to balance hemostasis and thrombotic potential.
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Affiliation(s)
- Jeremy G. T. Wurtzel
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Sophia Lazar
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Shayan Askari
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Xuefei Zhao
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Jenna Severa
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Francis Ayombil
- Division of Hematology and the Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children’s Hospital of Philadelphia, Philadelphia, PA
| | - James V. Michael
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Rodney M. Camire
- Division of Hematology and the Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children’s Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Steven E. McKenzie
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Timothy J. Stalker
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Peisong Ma
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Lawrence E. Goldfinger
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
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5
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Pedersen OB, Hvas AM, Pasalic L, Kristensen SD, Grove EL, Nissen PH. Platelet Function and Maturity and Related microRNA Expression in Whole Blood in Patients with ST-Segment Elevation Myocardial Infarction. Thromb Haemost 2024; 124:192-202. [PMID: 37846463 DOI: 10.1055/s-0043-1776305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
BACKGROUND Reduced effect of antiplatelet therapy has been reported in patients with ST-segment elevation myocardial infarction (STEMI). MicroRNAs (miRs) may influence platelet function and maturity, and subsequently the effect of antiplatelet therapy. OBJECTIVES We aimed to explore the association between miR expression and platelet function and maturity in patients with acute STEMI and healthy individuals. METHODS We performed an observational study of STEMI patients admitted directly to primary percutaneous coronary intervention. Patients were treated with antiplatelet therapy according to guidelines. Within 24 hours after admission, blood samples were obtained to measure: the expression of 10 candidate miRs, platelet function markers using advanced flow cytometry, platelet aggregation, serum thromboxane B2, and platelet maturity markers. Furthermore, blood samples from healthy individuals were obtained to determine the normal variation. RESULTS In total, 61 STEMI patients and 50 healthy individuals were included. STEMI patients had higher expression of miR-21-5p, miR-26b-5p, and miR-223-3p and lower expression of miR-150-5p, miR423-5p, and miR-1180-3p than healthy individuals. In STEMI patients, the expression of miR-26b-5p showed the most consistent association with platelet function (all p-values <0.05, Spearman's rho ranging from 0.27 to 0.41), while the expression of miR-150-5p and miR-223-3p showed negative associations with platelet function. No association between miR expression and platelet maturity markers was observed. CONCLUSION In patients with STEMI, the expression of six miRs was significantly different from healthy individuals. The expression of miR-26b-5p may affect platelet function in acute STEMI patients and potentially influence the effect of antiplatelet therapy.
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Affiliation(s)
- Oliver Buchhave Pedersen
- Thrombosis and Haemostasis Research Unit, Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | | | - Leonardo Pasalic
- Institute of Clinical Pathology and Medical Research, Westmead Hospital, NSW Health Pathology, Sydney, Australia
- Westmead Clinical School, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Steen Dalby Kristensen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Erik Lerkevang Grove
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Peter H Nissen
- Thrombosis and Haemostasis Research Unit, Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
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6
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Houlahan CB, Kong Y, Johnston B, Cielesh M, Chau TH, Fenwick J, Coleman PR, Hao H, Haltiwanger RS, Thaysen-Andersen M, Passam FH, Larance M. Analysis of the Healthy Platelet Proteome Identifies a New Form of Domain-Specific O-Fucosylation. Mol Cell Proteomics 2024; 23:100717. [PMID: 38237698 PMCID: PMC10879016 DOI: 10.1016/j.mcpro.2024.100717] [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: 07/14/2023] [Revised: 01/04/2024] [Accepted: 01/11/2024] [Indexed: 02/17/2024] Open
Abstract
Platelet activation induces the secretion of proteins that promote platelet aggregation and inflammation. However, detailed analysis of the released platelet proteome is hampered by platelets' tendency to preactivate during their isolation and a lack of sensitive protocols for low abundance releasate analysis. Here, we detail the most sensitive analysis to date of the platelet releasate proteome with the detection of >1300 proteins. Unbiased scanning for posttranslational modifications within releasate proteins highlighted O-glycosylation as being a major component. For the first time, we detected O-fucosylation on previously uncharacterized sites including multimerin-1 (MMRN1), a major alpha granule protein that supports platelet adhesion to collagen and is a carrier for platelet factor V. The N-terminal elastin microfibril interface (EMI) domain of MMRN1, a key site for protein-protein interaction, was O-fucosylated at a conserved threonine within a new domain context. Our data suggest that either protein O-fucosyltransferase 1, or a novel protein O-fucosyltransferase, may be responsible for this modification. Mutating this O-fucose site on the EMI domain led to a >50% reduction of MMRN1 secretion, supporting a key role of EMI O-fucosylation in MMRN1 secretion. By comparing releasates from resting and thrombin-treated platelets, 202 proteins were found to be significantly released after high-dose thrombin stimulation. Complementary quantification of the platelet lysates identified >3800 proteins, which confirmed the platelet origin of releasate proteins by anticorrelation analysis. Low-dose thrombin treatment yielded a smaller subset of significantly regulated proteins with fewer secretory pathway enzymes. The extensive platelet proteome resource provided here (larancelab.com/platelet-proteome) allows identification of novel regulatory mechanisms for drug targeting to address platelet dysfunction and thrombosis.
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Affiliation(s)
- Callum B Houlahan
- The Heart Research Institute, Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Yvonne Kong
- Central Clinical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Bede Johnston
- The Heart Research Institute, Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Michelle Cielesh
- Charles Perkins Centre, School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - The Huong Chau
- School of Natural Sciences, Macquarie University, Macquarie Park, New South Wales, Australia
| | - Jemma Fenwick
- The Heart Research Institute, Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia; Central Clinical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Paul R Coleman
- The Heart Research Institute, Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Huilin Hao
- Department of Biochemistry and Molecular Biology, Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Robert S Haltiwanger
- Department of Biochemistry and Molecular Biology, Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Morten Thaysen-Andersen
- School of Natural Sciences, Macquarie University, Macquarie Park, New South Wales, Australia; Institute for Glyco-Core Research, Nagoya University, Nagoya, Aichi, Japan
| | - Freda H Passam
- The Heart Research Institute, Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia; Central Clinical School, The University of Sydney, Sydney, New South Wales, Australia.
| | - Mark Larance
- Charles Perkins Centre, School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia.
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7
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Soslau G. Platelet protein synthesis, regulation, and post-translational modifications: mechanics and function. Crit Rev Biochem Mol Biol 2023; 58:99-117. [PMID: 37347996 DOI: 10.1080/10409238.2023.2224532] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/08/2023] [Indexed: 06/24/2023]
Abstract
Dogma had been firmly entrenched in the minds of the scientific community that the anucleate mammalian platelet was incapable of protein biosynthesis since their identification in the late 1880s. These beliefs were not challenged until the 1960s when several reports demonstrated that platelets possessed the capacity to biosynthesize proteins. Even then, many still dismissed the synthesis as trivial and unimportant for at least another two decades. Research in the field expanded after the 1980s and numerous reports have since been published that now clearly demonstrate the potential significance of platelet protein synthesis under normal, pathological, and activating conditions. It is now clear that the platelet proteome is not a static entity but can be altered slowly or rapidly in response to external signals to support physiological requirements to maintain hemostasis and other biological processes. All the necessary biological components to support protein synthesis have been identified in platelets along with post-transcriptional processing of mRNAs, regulators of translation, and post-translational modifications such as glycosylation. The last comprehensive review of the subject appeared in 2009 and much work has been conducted since that time. The current review of the field will briefly incorporate the information covered in earlier reviews and then bring the reader up to date with more recent findings.
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Affiliation(s)
- Gerald Soslau
- Department of Biochemistry and Molecular Biology Drexel University College of Medicine, Philadelphia, PA, United States
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8
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Thibord F, Johnson AD. Sources of variability in the human platelet transcriptome. Thromb Res 2023; 231:255-263. [PMID: 37357099 DOI: 10.1016/j.thromres.2023.06.009] [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: 03/31/2023] [Revised: 05/31/2023] [Accepted: 06/09/2023] [Indexed: 06/27/2023]
Abstract
Platelets are anucleated cells produced by megakaryocytes, from which they inherit all the components necessary to carry their functions. They circulate in blood vessels where they play essential roles in coagulation, wound repair or inflammation, and have been implicated in various pathological conditions such as thrombosis, viral infection or cancer progression. The importance of these cells has been established over a century ago, and effective anti-platelet medications with different mechanisms of action have since been developed. However, these therapies are not always effective and can incur adverse events, thus a better understanding of platelets molecular processes is needed to address these issues and improve our understanding of platelet functions. In recent years, an increasing number of studies have leveraged OMICs technologies to analyze their content and identify molecular signatures and mechanisms associated with platelet functions and platelet related disorders. In particular, the increased accessibility of microarrays and RNA sequencing opened the way for studies of the platelet transcriptome under a wide array of conditions. These studies revealed distinct expression profiles in diverse pathologies, which could lead to the discovery of novel biomarkers and therapeutic targets, and suggests a dynamic transcriptome that could influence platelet mechanisms. In this review, we highlight the different sources of transcript level variability in platelets while summarizing recent advances and discoveries from this emerging field.
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Affiliation(s)
- Florian Thibord
- Population Sciences Branch, Division of Intramural Research, National Heart, Lung and Blood Institute, 73 Mt. Wayte, Suite #2, Framingham, MA 01702, USA; The Framingham Heart Study, Boston University and NHLBI, 73 Mt. Wayte Ave, Suite #2, Framingham, MA 01702, USA.
| | - Andrew D Johnson
- Population Sciences Branch, Division of Intramural Research, National Heart, Lung and Blood Institute, 73 Mt. Wayte, Suite #2, Framingham, MA 01702, USA; The Framingham Heart Study, Boston University and NHLBI, 73 Mt. Wayte Ave, Suite #2, Framingham, MA 01702, USA
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9
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Allan HE, Vadgama A, Armstrong PC, Warner TD. Platelet ageing: A review. Thromb Res 2023; 231:214-222. [PMID: 36587993 DOI: 10.1016/j.thromres.2022.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/02/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
Platelet ageing is an area of research which has gained much interest in recent years. Newly formed platelets, often referred to as reticulated platelets, young platelets or immature platelets, are defined as RNA-enriched and have long been thought to be hyper-reactive. This latter view is largely rooted in associations and observations in patient groups with shortened platelet half-lives who often present with increased proportions of newly formed platelets. Evidence from such groups suggests that an increased proportion of newly formed platelets is associated with an increased risk of thrombotic events and a reduced effectiveness of standard anti-platelet therapies. Whilst research has highlighted the existence of platelet subpopulations based on function, size and age within patient groups, the common intrinsic changes which occur as platelets age within the circulation are only just being explored. By understanding the changes that occur during the natural ageing processes of platelets, we may be able to identify the triggers for alterations in platelet life span and platelet reactivity. Here we review research on platelet ageing in the context of health and disease, paying particular attention to the experimental approaches taken and the robustness of conclusions that can be drawn.
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Affiliation(s)
- Harriet E Allan
- Centre for Immunobiology, Blizard Institute, Barts & the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom.
| | - Ami Vadgama
- Centre for Immunobiology, Blizard Institute, Barts & the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
| | - Paul C Armstrong
- Centre for Immunobiology, Blizard Institute, Barts & the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
| | - Timothy D Warner
- Centre for Immunobiology, Blizard Institute, Barts & the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
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10
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Thom CS, Davenport P, Fazelinia H, Liu ZJ, Zhang H, Ding H, Roof J, Spruce LA, Ischiropoulos H, Sola-Visner M. Phosphoproteomics reveals content and signaling differences between neonatal and adult platelets. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.13.557268. [PMID: 37745418 PMCID: PMC10515911 DOI: 10.1101/2023.09.13.557268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Background and Objective Recent clinical studies have shown that transfusions of adult platelets increase morbidity and mortality in preterm infants. Neonatal platelets are hyporesponsive to agonist stimulation, and emerging evidence suggests developmental differences in platelet immune functions. This study was designed to compare the proteome and phosphoproteome of resting adult and neonatal platelets. Methods We isolated resting umbilical cord blood-derived platelets from healthy full term neonates (n=9) and resting blood platelets from healthy adults (n=7), and compared protein and phosphoprotein contents using data independent acquisition mass spectrometry. Results We identified 4745 platelet proteins with high confidence across all samples. Adult and neonatal platelets clustered separately by principal component analysis. Adult platelets were significantly enriched for immunomodulatory proteins, including β2 microglobulin and CXCL12, whereas neonatal platelets were enriched for ribosomal components and proteins involved in metabolic activities. Adult platelets were enriched for phosphorylated GTPase regulatory enzymes and proteins participating in trafficking, which may help prime them for activation and degranulation. Neonatal platelets were enriched for phosphorylated proteins involved in insulin growth factor signaling. Conclusions Using state-of-the-art mass spectrometry, our findings expanded the known neonatal platelet proteome and identified important differences in protein content and phosphorylation compared with adult platelets. These developmental differences suggested enhanced immune functions for adult platelets and presence of a molecular machinery related to platelet activation. These findings are important to understanding mechanisms underlying key platelet functions as well as the harmful effects of adult platelet transfusions given to preterm infants.
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Affiliation(s)
- Christopher S Thom
- Division of Neonatology, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Patricia Davenport
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Hossein Fazelinia
- Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Zhi-Jian Liu
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Haorui Zhang
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Hua Ding
- Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jennifer Roof
- Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Lynn A Spruce
- Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Harry Ischiropoulos
- Division of Neonatology, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Children's Hospital of Philadelphia Research Institute, Philadelphia, PA
| | - Martha Sola-Visner
- Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, USA
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11
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Tang L, Liu C, Rosenberger P. Platelet formation and activation are influenced by neuronal guidance proteins. Front Immunol 2023; 14:1206906. [PMID: 37398659 PMCID: PMC10310924 DOI: 10.3389/fimmu.2023.1206906] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 06/05/2023] [Indexed: 07/04/2023] Open
Abstract
Platelets are anucleate blood cells derived from megakaryocytes. They link the fundamental functions of hemostasis, inflammation and host defense. They undergo intracellular calcium flux, negatively charged phospholipid translocation, granule release and shape change to adhere to collagen, fibrin and each other, forming aggregates, which are key to several of their functions. In all these dynamic processes, the cytoskeleton plays a crucial role. Neuronal guidance proteins (NGPs) form attractive and repulsive signals to drive neuronal axon navigation and thus refine neuronal circuits. By binding to their target receptors, NGPs rearrange the cytoskeleton to mediate neuron motility. In recent decades, evidence has indicated that NGPs perform important immunomodulatory functions and influence platelet function. In this review, we highlight the roles of NGPs in platelet formation and activation.
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12
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LL-37 Triggers Antimicrobial Activity in Human Platelets. Int J Mol Sci 2023; 24:ijms24032816. [PMID: 36769137 PMCID: PMC9917488 DOI: 10.3390/ijms24032816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
Platelets play a crucial role in hemostasis and the immune response, mainly by recognizing signals associated with vascular damage. However, it has recently been discovered that the antimicrobial peptide LL-37 activates platelets in functions related to thrombus formation and inflammation. Therefore, this work aims to evaluate the effect of LL-37 on the activation of antimicrobial functions of human platelets. Our results show that platelets treated with LL-37 increase the surface expression of receptors (Toll-like receptors (TLRs) 2 and -4, CD32, CD206, Dectin-1, CD35, LOX-1, CD41, CD62P, and αIIbβ3 integrins) for the recognition of microorganisms, and molecules related to antigen presentation to T lymphocytes (CD80, CD86, and HLA-ABC) secrete the antimicrobial molecules: bactericidal/permeability-increasing protein (BPI), azurocidin, human neutrophil peptide (HNP) -1, and myeloperoxidase. They also translate azurocidin, and have enhanced binding to Escherichia coli, Staphylococcus aureus, and Candida albicans. Furthermore, the supernatant of LL-37-treated platelets can inhibit E. coli growth, or platelets can employ their LL-37 to inhibit microbial growth. In conclusion, these findings demonstrate that LL-37 participates in the antimicrobial function of human platelets.
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13
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Human Platelets Contain, Translate, and Secrete Azurocidin; A Novel Effect on Hemostasis. Int J Mol Sci 2022; 23:ijms23105667. [PMID: 35628475 PMCID: PMC9144465 DOI: 10.3390/ijms23105667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 02/04/2023] Open
Abstract
Platelets play a significant role in hemostasis and perform essential immune functions, evidenced by the extensive repertoire of antimicrobial molecules. Currently, there is no clear description of the presence of azurocidin in human platelets. Azurocidin is a 37 kDa cationic protein abundant in neutrophils, with microbicidal, opsonizing, and vascular permeability-inducing activity. Therefore, this work aimed to characterize the content, secretion, translation, and functions of azurocidin in platelets. Our results show the presence of azurocidin mRNA and protein in α-granules of platelet and megakaryoblasts, and stimulation with thrombin, ADP, and LPS leads to the secretion of free azurocidin as well as within extracellular vesicles. In addition, platelets can translate azurocidin in a basal or thrombin-induced manner. Finally, we found that the addition of low concentrations of azurocidin prevents platelet aggregation and activation. In conclusion, we demonstrate that platelets contain, secrete, and translate azurocidin, and this protein may have important implications for hemostasis.
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14
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Cimmino G, di Serafino L, Cirillo P. Pathophysiology and mechanisms of Acute Coronary Syndromes: athero-thrombosis, immune-inflammation and beyond. Expert Rev Cardiovasc Ther 2022; 20:351-362. [PMID: 35510629 DOI: 10.1080/14779072.2022.2074836] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION The pathophysiology of atherosclerosis and its acute complications, such as the Acute Coronary Syndromes (ACS), is continuously under investigation. Immunity and inflammation seem to play a pivotal role in promoting formation and grow of atherosclerotic plaques. At the same time, plaque rupture followed by both platelets' activation and coagulation cascade induction lead to intracoronary thrombus formation. Although these phenomena might be considered responsible of about 90% of ACS, in up to 5-10% of acute syndromes a non-obstructive coronary artery disease (MINOCA) might be documented. This paper gives an overview on athero-thrombosis and immuno-inflammation processes involved in ACS pathophysiology also emphasizing the pathological mechanisms potentially involved in MINOCA. AREAS COVERED The relationship between immuno-inflammation and atherothrombosis is continuously updated by recent findings. At the same time, pathophysiology of MINOCA still remains a partially unexplored field, stimulating the research of potential links between these two aspects of ACS pathophysiology. EXPERT OPINION Pathophysyiology of ACS has been extensively investigated; however, several grey areas still remain. MINOCA represents one of these areas. At the same time, many aspects of immune-inflammation processes are still unknown. Thus, research should be continued to shed a brighter light on both these sides of "ACS" moon.
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Affiliation(s)
- Giovanni Cimmino
- Department of Translational Medical Sciences, Section of Cardiology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Luigi di Serafino
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Plinio Cirillo
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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15
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Szelenberger R, Karbownik MS, Kacprzak M, Synowiec E, Michlewska S, Bijak M, Zielińska M, Olender A, Saluk-Bijak J. Dysregulation in the Expression of Platelet Surface Receptors in Acute Coronary Syndrome Patients-Emphasis on P2Y12. BIOLOGY 2022; 11:biology11050644. [PMID: 35625372 PMCID: PMC9138357 DOI: 10.3390/biology11050644] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 02/05/2023]
Abstract
The pathological conditions caused by blood platelet activation constitute a fundamental core in the pathogenesis of Acute Coronary Syndrome (ACS). The hyperactivity of platelets in ACS is well-documented, but there is still little research into the molecular basis of phenotypic changes in platelet functionality. To expand the knowledge of this phenomenon, we analyzed the disturbances in the expression of several key platelet receptors and the aspect of regulating potential abnormalities. Platelet surface receptors are responsible for maintaining the hemostatic balance, platelet interaction with immune cells, and support of the coagulation cascade leading to occlusion of the vessel lumen. Due to their prominent role, platelet receptors constitute a major target in pharmacological treatment. Our work aimed to identify the molecular alteration of platelet surface receptors, which showed augmented mRNA expression of P2Y12, GP1BB, ITGA2B, and ITGB3 and increased protein concentrations of P2Y12 and GP IIb/IIIa in ACS. The upregulation of the P2Y12 level was also confirmed by confocal and cytometric visualization. Furthermore, we evaluated the expression of two microRNAs: miR-223-3p and miR-126-3p, which were suggested to regulate platelet P2Y12 expression. Results of our study present new insight into the molecular background of ACS.
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Affiliation(s)
- Rafał Szelenberger
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
- Correspondence:
| | | | - Michał Kacprzak
- Department of Interventional Cardiology, Medical University of Lodz, 91-213 Lodz, Poland; (M.K.); (M.Z.)
| | - Ewelina Synowiec
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
| | - Sylwia Michlewska
- Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland;
| | - Michał Bijak
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
| | - Marzenna Zielińska
- Department of Interventional Cardiology, Medical University of Lodz, 91-213 Lodz, Poland; (M.K.); (M.Z.)
| | - Alina Olender
- Chair and Department of Medical Microbiology, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Joanna Saluk-Bijak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
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16
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Moon MJ, McFadyen JD, Peter K. Caught at the Scene of the Crime: Platelets and Neutrophils Are Conspirators in Thrombosis. Arterioscler Thromb Vasc Biol 2021; 42:63-66. [PMID: 34852641 DOI: 10.1161/atvbaha.121.317187] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mitchell J Moon
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (M.J.M., J.D.M., K.P.).,Baker Department of Cardiometabolic Health, University of Melbourne, Victoria, Australia (M.J.M., J.D.M., K.P.)
| | - James D McFadyen
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (M.J.M., J.D.M., K.P.).,Baker Department of Cardiometabolic Health, University of Melbourne, Victoria, Australia (M.J.M., J.D.M., K.P.).,Department of Clinical Hematology (J.D.M.), The Alfred Hospital, Melbourne, Victoria, Australia.,Departments of Medicine (J.D.M., K.P.), Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Karlheinz Peter
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (M.J.M., J.D.M., K.P.).,Baker Department of Cardiometabolic Health, University of Melbourne, Victoria, Australia (M.J.M., J.D.M., K.P.).,Department of Cardiology (K.P.), The Alfred Hospital, Melbourne, Victoria, Australia.,Departments of Medicine (J.D.M., K.P.), Central Clinical School, Monash University, Melbourne, Victoria, Australia.,Immunology (K.P.), Central Clinical School, Monash University, Melbourne, Victoria, Australia
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17
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Joshi A, Schmidt LE, Burnap SA, Lu R, Chan MV, Armstrong PC, Baig F, Gutmann C, Willeit P, Santer P, Barwari T, Theofilatos K, Kiechl S, Willeit J, Warner TD, Mathur A, Mayr M. Neutrophil-Derived Protein S100A8/A9 Alters the Platelet Proteome in Acute Myocardial Infarction and Is Associated With Changes in Platelet Reactivity. Arterioscler Thromb Vasc Biol 2021; 42:49-62. [PMID: 34809447 PMCID: PMC8691374 DOI: 10.1161/atvbaha.121.317113] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Supplemental Digital Content is available in the text. Objective: Platelets are central to acute myocardial infarction (MI). How the platelet proteome is altered during MI is unknown. We sought to describe changes in the platelet proteome during MI and identify corresponding functional consequences. Approach and Results: Platelets from patients experiencing ST-segment–elevation MI (STEMI) before and 3 days after treatment (n=30) and matched patients with severe stable coronary artery disease before and 3 days after coronary artery bypass grafting (n=25) underwent quantitative proteomic analysis. Elevations in the proteins S100A8 and S100A9 were detected at the time of STEMI compared with stable coronary artery disease (S100A8: FC, 2.00; false discovery rate, 0.05; S100A9: FC, 2.28; false discovery rate, 0.005). During STEMI, only S100A8 mRNA and protein levels were correlated in platelets (R=0.46, P=0.012). To determine whether de novo protein synthesis occurs, activated platelets were incubated with 13C-labeled amino acids for 24 hours and analyzed by mass spectrometry. No incorporation was confidently detected. Platelet S100A8 and S100A9 was strongly correlated with neutrophil abundance at the time of STEMI. When isolated platelets and neutrophils were coincubated under quiescent and activated conditions, release of S100A8 from neutrophils resulted in uptake of S100A8 by platelets. Neutrophils released S100A8/A9 as free heterodimer, rather than in vesicles or extracellular traps. In the community-based Bruneck study (n=338), plasma S100A8/A9 was inversely associated with platelet reactivity—an effect abrogated by aspirin. Conclusions: Leukocyte-to-platelet protein transfer may occur in a thromboinflammatory environment such as STEMI. Plasma S100A8/A9 was negatively associated with platelet reactivity. These findings highlight neutrophils as potential modifiers for thrombotic therapies in coronary artery disease.
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Affiliation(s)
- Abhishek Joshi
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.).,Department of Cardiology, Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom (A.J., A.M.)
| | - Lukas E Schmidt
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.)
| | - Sean A Burnap
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.)
| | - Ruifang Lu
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.)
| | - Melissa V Chan
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom (M.V.C., P.C.A., T.D.W.)
| | - Paul C Armstrong
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom (M.V.C., P.C.A., T.D.W.)
| | - Ferheen Baig
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.)
| | - Clemens Gutmann
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.)
| | - Peter Willeit
- Department of Neurology, Medical University of Innsbruck, Austria (P.W., S.K., J.W.)
| | - Peter Santer
- Department of Laboratory Medicine, Bruneck Hospital, Italy (P.S.)
| | - Temo Barwari
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.)
| | - Konstantinos Theofilatos
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.)
| | - Stefan Kiechl
- Department of Neurology, Medical University of Innsbruck, Austria (P.W., S.K., J.W.).,Research Centre on Vascular Ageing and Stroke, Innsbruck, Austria (S.K., J.W.)
| | - Johann Willeit
- Department of Neurology, Medical University of Innsbruck, Austria (P.W., S.K., J.W.).,Research Centre on Vascular Ageing and Stroke, Innsbruck, Austria (S.K., J.W.)
| | - Timothy D Warner
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom (M.V.C., P.C.A., T.D.W.)
| | - Anthony Mathur
- Department of Cardiology, Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom (A.J., A.M.)
| | - Manuel Mayr
- King's College London British Heart Foundation Centre, School of Cardiovascular Medicine and Sciences, United Kingdom (A.J., L.E.S., S.A.B., R.L., F.B., C.G., T.B., K.T., M.M.).,Centre for Cardiovascular Medicine and Devices, Queen Mary's University, London, United Kingdom (A.M.)
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18
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Schubert P, Johnson L, Culibrk B, Chen Z, Tan S, Marks DC, Devine DV. Reconstituted cryopreserved platelets synthesize proteins during short-term storage and packaging a defined subset into microvesicles. Transfusion 2021; 61:2549-2555. [PMID: 34121199 DOI: 10.1111/trf.16542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/21/2021] [Accepted: 05/23/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Cryopreservation of platelets (PLTs) could allow extension of their shelf-life to years, compared to days for liquid stored platelets. Due to their greater hemostatic effect, reconstituted cryopreserved platelets (cryo-PLTs) would be able to support bleeding emergencies. Since protein synthesis has been linked to PLT functions, such as clot formation and immune responses, the translational capacity of reconstituted cryo-PLTs was assessed upon thawing and short-term storage. METHODS/MATERIALS Platelets were frozen at -80°C with 5-6% DMSO. Upon thawing, they were reconstituted in plasma and then aliquoted (12 ml) into mini-bags and assessed over 24 h of storage at RT. One series served as control; the second and third series were spiked with either 300 μM puromycin (Pm) or 227 nM biotin-labeled Pm. Samples were tested for in vitro quality and PLT microvesicle enumeration by flow cytometry. Protein synthesis in cryo-PLTs was assessed using a modified method based on puromycin-associated nascent chain proteomics. RESULTS In vitro parameters of reconstituted and subsequently stored platelets were consistent with previously published results. Mass-spectrometry analyses identified that 22 proteins were synthesized in PLTs and 13 of those were observed in platelet microvesicles (PMVs). CONCLUSION Cryo-PLTs can synthesize proteins upon reconstitution and storage. Discovery of a subset of these proteins in the PMV suggests a role in vesicle encapsulation, possibly in a selective manner. This observation provides novel insights into the capacity for protein synthesis in cryo-PLTs and the potential regulation of protein packaging into PMV.
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Affiliation(s)
- Peter Schubert
- Centre for Innovation, Canadian Blood Services, Vancouver, British Columbia, Canada.,Centre for Blood Research, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lacey Johnson
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia
| | - Brankica Culibrk
- Centre for Innovation, Canadian Blood Services, Vancouver, British Columbia, Canada.,Centre for Blood Research, Vancouver, British Columbia, Canada
| | - Zhongming Chen
- Centre for Innovation, Canadian Blood Services, Vancouver, British Columbia, Canada.,Centre for Blood Research, Vancouver, British Columbia, Canada
| | - Shereen Tan
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia
| | - Denese C Marks
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia.,Sydney Medical School, University of Sydney, Camperdown, New South Wales, Australia
| | - Dana V Devine
- Centre for Innovation, Canadian Blood Services, Vancouver, British Columbia, Canada.,Centre for Blood Research, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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19
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Yahud E, Schilo T, Nevzorov R, Asher E, Bryk G, Laish-Farkash A, Lev EI. Immature platelet fraction over time and clinical outcomes in patients with acute myocardial infarction. Int J Lab Hematol 2021; 43:966-972. [PMID: 33715283 DOI: 10.1111/ijlh.13499] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/24/2021] [Accepted: 02/05/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Immature platelets in the circulation can be measured as immature platelet fraction (IPF). Limited data exist regarding IPF during the course of an acute myocardial infarction (AMI), the association between IPF and extent of cardiac damage, and the long-term prognostic implications of IPF in patients with AMI. AIMS To examine the temporal course of IPF during the first month after AMI, the association between IPF and extent of cardiac damage, and the long-term prognostic effect of IPF in AMI patients. METHODS Patients with AMI treated with percutaneous coronary intervention (PCI) were examined. IPF was evaluated by a Sysmex XN-3000 autoanalyzer, at 4 time points: baseline; one day post-PCI; 3 days post-PCI, and 30 days post-PCI. The association between peak troponin-T levels and IPF was evaluated. One-year clinical outcomes (cardiac hospitalization, urgent revascularization, or death) were assessed. RESULTS One hundred patients were included, mean age was 59.5 ± 11.3 years, 82 were men, 27 had diabetes, and 54 were hospitalized with ST-segment elevation myocardial infarction (STEMI) and 46 with non-ST segment elevation myocardial infarction (NSTEMI). The levels of IPF modestly decreased a day after PCI but did not change in subsequent measurements. Peak troponin-T level was significantly associated with the levels of IPF at all 4 time points. IPF levels three days post-PCI were associated with the composite clinical outcome at 1 year. CONCLUSIONS The levels of IPF following AMI remain relatively stable over a one-month period. Higher levels of IPF during the acute phase of AMI appear to be associated with worse cardiac outcomes at 1 year.
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Affiliation(s)
- Ella Yahud
- Cardiology Division, Assuta Ashdod University Hospital, Ashdod, Israel
| | - Tamar Schilo
- Faculty of Health Sciences, Ben Gurion University of the Negev, Joyce and Irving Goldman Medical School, Beer-Sheva, Israel
| | | | - Elad Asher
- Shaare Zedek Medical Center, Hebrew University, Jerusalem, Israel
| | - Gabriel Bryk
- Laboratory Division, Assuta Ashdod University Hospital, Ashdod, Israel
| | | | - Eli I Lev
- Cardiology Division, Assuta Ashdod University Hospital, Ashdod, Israel
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20
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Faber J, Hvas AM, Kristensen SD, Grove EL, Adelborg K. Immature Platelets and Risk of Cardiovascular Events among Patients with Ischemic Heart Disease: A Systematic Review. Thromb Haemost 2020; 121:659-675. [PMID: 33302302 DOI: 10.1055/s-0040-1721386] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Immature platelets are larger and may be more thrombogenic than mature platelets. This systematic review included studies on the association between mean platelet volume (MPV), immature platelet count (IPC), and immature platelet fraction (IPF) and the risk of major cardiovascular events (MACEs) in patients with acute coronary syndrome (ACS) or stable coronary artery disease (CAD). METHODS The literature search included studies in PubMed, Embase, Web of Science, and Cochrane Library. The review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Effect estimates that included multivariate adjusted odds ratios, relative risks, or hazard ratios were extracted. RESULTS Forty-two studies were identified. High MPV was positively associated with MACE in 20 of 26 studies of patients with ACS, four of five studies in patients with stable CAD, and in all six studies comprising a combined population with ACS and stable CAD. Using continuous models of MPV in patients with ACS, effect estimates varied from 0.90 (95% confidence interval [CI]: 0.95-1.03) to 1.66 (95% CI: 1.32-2.09). The strength of these associations was broadly similar among patients with stable CAD and in combined populations. Five studies investigated IPC or IPF as exposures and all reported positive associations with MACE among patients with ACS, stable CAD, or in combined populations. CONCLUSION This review demonstrated clear evidence for positive associations between measures of immature platelets and subsequent risk of MACE in acute and stable ischemic heart disease patients.
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Affiliation(s)
- Julie Faber
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Anne-Mette Hvas
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark.,Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
| | - Steen Dalby Kristensen
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark.,Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | - Erik Lerkevang Grove
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark.,Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | - Kasper Adelborg
- Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark.,Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
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21
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Neu CT, Gutschner T, Haemmerle M. Post-Transcriptional Expression Control in Platelet Biogenesis and Function. Int J Mol Sci 2020; 21:ijms21207614. [PMID: 33076269 PMCID: PMC7589263 DOI: 10.3390/ijms21207614] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/06/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
Platelets are highly abundant cell fragments of the peripheral blood that originate from megakaryocytes. Beside their well-known role in wound healing and hemostasis, they are emerging mediators of the immune response and implicated in a variety of pathophysiological conditions including cancer. Despite their anucleate nature, they harbor a diverse set of RNAs, which are subject to an active sorting mechanism from megakaryocytes into proplatelets and affect platelet biogenesis and function. However, sorting mechanisms are poorly understood, but RNA-binding proteins (RBPs) have been suggested to play a crucial role. Moreover, RBPs may regulate RNA translation and decay following platelet activation. In concert with other regulators, including microRNAs, long non-coding and circular RNAs, RBPs control multiple steps of the platelet life cycle. In this review, we will highlight the different RNA species within platelets and their impact on megakaryopoiesis, platelet biogenesis and platelet function. Additionally, we will focus on the currently known concepts of post-transcriptional control mechanisms important for RNA fate within platelets with a special emphasis on RBPs.
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Affiliation(s)
- Carolin T. Neu
- Institute of Pathology, Section for Experimental Pathology, Medical Faculty, Martin-Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany;
| | - Tony Gutschner
- Junior Research Group ‘RNA Biology and Pathogenesis’, Medical Faculty, Martin-Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany;
| | - Monika Haemmerle
- Institute of Pathology, Section for Experimental Pathology, Medical Faculty, Martin-Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany;
- Correspondence: ; Tel.: +49-345-557-3964
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22
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Buttarello M, Mezzapelle G, Freguglia F, Plebani M. Reticulated platelets and immature platelet fraction: Clinical applications and method limitations. Int J Lab Hematol 2020; 42:363-370. [PMID: 32157813 DOI: 10.1111/ijlh.13177] [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: 08/09/2019] [Revised: 01/21/2020] [Accepted: 02/12/2020] [Indexed: 12/23/2022]
Abstract
So-called "reticulated" or "immature platelets," which are newly released into the circulation, are more reactive than mature platelets, contain more RNA, and can be counted using flow cytometry after staining with thiazole orange or using some fully automated hematology analyzers, albeit with numerical disagreement. This review provides an overview of the state of the art of available technology for measuring immature or reticulated platelets (RP) with preanalytical (time stability, biological variation), analytical (methods, imprecision), and postanalytical (reference range) limitations. We also analyzed the clinical conditions in which immature/RP can be considered a diagnostic or prognostic tool (ie, differential diagnosis of thrombocytopenia, recovery after bone marrow or stem cell transplantation, risk assessment in cardiovascular diseases, response to antiplatelet drugs). They might also be of clinical utility in other settings but with lower evidence. The lack of a specific reference method and universal control material, as well as dependency of results on the measurement technique used, calls for different reference intervals and compromises comparison between clinical studies carried out using different analytical methods. To obviate lack of agreement between methods, more specific RNA dyes are necessary and the impact of the platelet size on the fluorescence signal defined. In the harmonization age, also in nomenclature field, a new definition instead of "reticulated" or "immature" platelets would be useful, and "young platelets" might be a more appropriate definition taking into account both the age and the functionality of this platelet fraction.
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Affiliation(s)
- Mauro Buttarello
- Department of Laboratory Medicine, Azienda Ospedaliera-Università di Padova, Padova, Italy
| | | | | | - Mario Plebani
- Department of Laboratory Medicine, Azienda Ospedaliera-Università di Padova, Padova, Italy
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Inflammation in acute coronary syndrome: Expression of TLR2 mRNA is increased in platelets of patients with ACS. PLoS One 2019; 14:e0224181. [PMID: 31644579 PMCID: PMC6808418 DOI: 10.1371/journal.pone.0224181] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 10/07/2019] [Indexed: 12/11/2022] Open
Abstract
Background Platelets are key components in atherogenesis and determine the course of its clinical sequelae acute coronary syndrome (ACS). Components of the innate immune system—the superfamily of TLR receptors–are present in platelets and represent a link between atherothrombosis and inflammation. We hypothesize that alteration in platelet TLR mRNA expression is a result of inflammation driving coronary atherosclerosis and may represent an alternative platelet activation pathway in ACS. TLR2-, TLR4- and TLR9- mRNA-expression was determined in ACS patients and compared to patients with invasive exclusion of atherosclerotic lesions of coronary arteries. Methods A total of fifty-four patients were enrolled in this clinical retrospective cohort single centre study. Total RNA from sepharose-filtered highly purified platelets was isolated using acid guanidinium thiocyanate-phenol-chloroform extraction and transcribed to cDNA using a first strand cDNA synthesis kit. To determine absolute copy numbers of TLR2, TLR4 and TLR9 we used plasmid based quantitative PCR with normalisation to an internal control. Results We found that mRNA expression levels of TLR2 but not TLR 4 and 9 are up-regulated in platelets of patients with ACS when compared to patients without coronary atherosclerosis. Conclusion Our results suggest elevated TLR2 mRNA expression in platelets as a biomarker reflecting the underlying inflammation in ACS and possibly severity of coronary atherosclerosis. Platelet TLR2 may represent a link between inflammation and atherothrombosis in ACS.
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Szelenberger R, Kacprzak M, Bijak M, Saluk-Bijak J, Zielinska M. Blood platelet surface receptor genetic variation and risk of thrombotic episodes. Clin Chim Acta 2019; 496:84-92. [PMID: 31233737 DOI: 10.1016/j.cca.2019.06.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 06/19/2019] [Accepted: 06/20/2019] [Indexed: 10/26/2022]
Abstract
Haemostasis is a set of processes whose main task is to prevent blood loss by creating barriers in damaged vessels. Because of the large number of platelet surface receptors and their many agonists, platelets can be activated in normal and pathologic states leading to thromboembolic complications. Although age, blood pressure, LDL and HDL, diabetes, lack of physical activity, obesity and stress are well established risk factors, recent work has shown that platelet receptor polymorphisms also impact platelet function. The most common polymorphisms include 14A/T (PAR-1), 139C/T, 744T/C, 52G/T, i-ins801A (P2Y12), 1622A/G, -5T/C (GPIbα) 1565C/T (GPIIb/IIIa) and 807C/T (GPIa/IIa). This review examines the influence of these polymorphisms on cardiovascular disease including myocardial infarction, deep venous thromboembolism and acute coronary syndromes. Elucidation of these genetic variations will facilitate our understanding of the complex molecular mechanisms involved with physiologic and pathophysiologic platelet activation and clot formation.
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Affiliation(s)
- Rafal Szelenberger
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland.
| | - Michal Kacprzak
- Intensive Cardiac Therapy Clinic, Medical University of Lodz, Pomorska 251, 91-213 Lodz, Poland
| | - Michal Bijak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Joanna Saluk-Bijak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Marzenna Zielinska
- Intensive Cardiac Therapy Clinic, Medical University of Lodz, Pomorska 251, 91-213 Lodz, Poland
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25
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Garabet L, Ghanima W, Rangberg A, Teruel-Montoya R, Martinez C, Lozano ML, Nystrand CF, Bussel JB, Sandset PM, Jonassen CM. Circulating microRNAs in patients with immune thrombocytopenia before and after treatment with thrombopoietin-receptor agonists. Platelets 2019; 31:198-205. [PMID: 30885035 DOI: 10.1080/09537104.2019.1585527] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs involved in the regulation of gene expression. Dysregulated expression of several miRNAs has been found in primary immune thrombocytopenia (ITP) suggesting that miRNAs are likely involved in the pathogenesis of ITP. We aimed to explore the differential expression of miRNAs in patients with ITP before and after starting treatment with thrombopoietin-receptor agonists (TPO-RAs) to clarify their roles in the pathophysiology of ITP, and as potential diagnostic and prognostic markers of this disorder.We performed a profiling study where 179 miRNAs were analyzed in eight ITP patients before and during treatment with TPO-RAs and in eight controls using miRNA PCR panel; 81 miRNAs were differentially expressed in ITP patients compared to controls, and 14 miRNAs showed significant changes during TPO-RA-treatment. Ten miRNAs were selected for validation that was performed in 23 patients and 22 controls using droplet digital PCR. Three miRNAs were found to be differentially expressed in ITP patients before TPO-RA-treatment compared to controls: miR-199a-5p was down-regulated (p = 0.0001), miR-33a-5p (p = 0.0002) and miR-195-5p (p = 0.035) were up-regulated. Treatment with TPO-RAs resulted in changes in six miRNAs including miR-199a-5p (p = 0.001), miR-33a-5p (p = 0.003), miR-382-5p (p = 0.004), miR-92b-3p (p = 0.005), miR-26a-5p (p = 0.008) and miR-221-3p (p = 0.023); while miR-195-5p remained unchanged and significantly higher than in controls, despite the increase in the platelet count, which may indicate its possible role in the pathophysiology of ITP. Regression analysis revealed that pre-treatment levels of miR-199a-5p and miR-221-3p could help to predict platelet response to TPO-RA-treatment. ROC curve analysis showed that the combination of miR-199a-5p and miR-33a-5p could distinguish patients with ITP from controls with AUC of 0.93.This study identifies a number of differentially expressed miRNAs in ITP patients before and after initiation of TPO-RAs with potential roles in the pathophysiology, as well as with a possible utility as diagnostic and prognostic biomarkers. These interesting findings deserve further exploration and validation in future studies.
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Affiliation(s)
- Lamya Garabet
- Multidisciplinary Laboratory Medicine and Medical Biochemistry, Akershus University Hospital, Lørenskog, Norway.,Center for Laboratory Medicine, Østfold Hospital Trust, Grålum, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Waleed Ghanima
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Research, Østfold Hospital Trust, Grålum, Norway.,Department of Medicine, Østfold Hospital Trust, Grålum, Norway
| | - Anbjørg Rangberg
- Center for Laboratory Medicine, Østfold Hospital Trust, Grålum, Norway
| | - Raul Teruel-Montoya
- Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, Servicio de Hematología y Oncología Médica, Murcia, Spain.,Grupo de investigación CB15/00055 del Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Constantino Martinez
- Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, Servicio de Hematología y Oncología Médica, Murcia, Spain
| | - Maria Luisa Lozano
- Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, Servicio de Hematología y Oncología Médica, Murcia, Spain.,Grupo de investigación CB15/00055 del Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | | | - James B Bussel
- Department of Pediatrics, Division of Hematology, New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
| | - Per Morten Sandset
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Haematology, Oslo University Hospital, Oslo, Norway.,Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Christine M Jonassen
- Center for Laboratory Medicine, Østfold Hospital Trust, Grålum, Norway.,Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
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Junqueira-Neto S, Batista IA, Costa JL, Melo SA. Liquid Biopsy beyond Circulating Tumor Cells and Cell-Free DNA. Acta Cytol 2019; 63:479-488. [PMID: 30783027 DOI: 10.1159/000493969] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/24/2018] [Indexed: 12/30/2022]
Abstract
Liquid biopsy represents the analysis of tumor-derived material in the blood and other body fluids of cancer patients. This portrays a minimally invasive detection tool for molecular biomarkers. Liquid biopsy has emerged as a complementary or alternative method to surgical biopsy. This non-invasive detection tool overcomes the recurrent problems in the clinical assessment of tumors that stem from the lack of accessibility to the tumor tissue and its clonal heterogeneity. Moreover, body fluid-derived components have shown to reflect the genetic profile of both primary and metastatic lesions and provide a real-time monitoring of tumor dynamics, representing a great promise for personalized medicine. This review will highlight the latest breakthroughs and the current applications of several tumor-derived biomarkers that can be found in body fluids. The authors will focus on tumor-derived exosomes, tumor-educated platelets, and circulating tumor miRNAs and mRNAs, and how these can be used for tumor detection.
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MESH Headings
- Antineoplastic Agents/therapeutic use
- Biomarkers, Tumor/blood
- Biomarkers, Tumor/isolation & purification
- Cell-Free Nucleic Acids/blood
- Cell-Free Nucleic Acids/isolation & purification
- Circulating Tumor DNA/blood
- Circulating Tumor DNA/isolation & purification
- Exosomes/chemistry
- Exosomes/pathology
- Humans
- Liquid Biopsy/methods
- MicroRNAs/blood
- MicroRNAs/isolation & purification
- Monitoring, Physiologic
- Mutation
- Neoplasm Recurrence, Local/blood
- Neoplasm Recurrence, Local/diagnosis
- Neoplasm Recurrence, Local/drug therapy
- Neoplasm Recurrence, Local/pathology
- Neoplasms/blood
- Neoplasms/diagnosis
- Neoplasms/drug therapy
- Neoplasms/pathology
- Neoplastic Cells, Circulating/chemistry
- Neoplastic Cells, Circulating/pathology
- Precision Medicine/methods
- Prognosis
- RNA, Messenger/blood
- RNA, Messenger/isolation & purification
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Affiliation(s)
- Susana Junqueira-Neto
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal (i3S), Porto, Portugal
- Institute of Molecular Pathology & Immunology of the University of Porto (IPATIMUP), Porto, Portugal
- Medical Faculty of the University of Porto (FMUP), Porto, Portugal
| | - Inês A Batista
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal (i3S), Porto, Portugal
- Institute of Molecular Pathology & Immunology of the University of Porto (IPATIMUP), Porto, Portugal
| | - José Luís Costa
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal (i3S), Porto, Portugal
- Institute of Molecular Pathology & Immunology of the University of Porto (IPATIMUP), Porto, Portugal
- Medical Faculty of the University of Porto (FMUP), Porto, Portugal
| | - Sónia A Melo
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal (i3S), Porto, Portugal,
- Institute of Molecular Pathology & Immunology of the University of Porto (IPATIMUP), Porto, Portugal,
- Medical Faculty of the University of Porto (FMUP), Porto, Portugal,
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27
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Provost P. Platelet MicroRNAs. Platelets 2019. [DOI: 10.1016/b978-0-12-813456-6.00006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Borràs N, Orriols G, Batlle J, Pérez-Rodríguez A, Fidalgo T, Martinho P, López-Fernández MF, Rodríguez-Trillo Á, Lourés E, Parra R, Altisent C, Cid AR, Bonanad S, Cabrera N, Moret A, Mingot-Castellano ME, Navarro N, Pérez-Montes R, Marcellin S, Moreto A, Herrero S, Soto I, Fernández-Mosteirín N, Jiménez-Yuste V, Alonso N, de Andrés-Jacob A, Fontanes E, Campos R, Paloma MJ, Bermejo N, Berrueco R, Mateo J, Arribalzaga K, Marco P, Palomo Á, Quismondo NC, Iñigo B, Nieto MDM, Vidal R, Martínez MP, Aguinaco R, Tenorio JM, Ferreiro M, García-Frade J, Rodríguez-Huerta AM, Cuesta J, Rodríguez-González R, García-Candel F, Dobón M, Aguilar C, Vidal F, Corrales I. Unraveling the effect of silent, intronic and missense mutations on VWF splicing: contribution of next generation sequencing in the study of mRNA. Haematologica 2018; 104:587-598. [PMID: 30361419 PMCID: PMC6395343 DOI: 10.3324/haematol.2018.203166] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 10/19/2018] [Indexed: 12/12/2022] Open
Abstract
Large studies in von Willebrand disease patients, including Spanish and Portuguese registries, led to the identification of >250 different mutations. It is a challenge to determine the pathogenic effect of potential splice site mutations on VWF mRNA. This study aimed to elucidate the true effects of 18 mutations on VWF mRNA processing, investigate the contribution of next-generation sequencing to in vivo mRNA study in von Willebrand disease, and compare the findings with in silico prediction. RNA extracted from patient platelets and leukocytes was amplified by RT-PCR and sequenced using Sanger and next generation sequencing techniques. Eight mutations affected VWF splicing: c.1533+1G>A, c.5664+2T>C and c.546G>A (p.=) prompted exon skipping; c.3223-7_3236dup and c.7082-2A>G resulted in activation of cryptic sites; c.3379+1G>A and c.7437G>A) demonstrated both molecular pathogenic mechanisms simultaneously; and the p.Cys370Tyr missense mutation generated two aberrant transcripts. Of note, the complete effect of three mutations was provided by next generation sequencing alone because of low expression of the aberrant transcripts. In the remaining 10 mutations, no effect was elucidated in the experiments. However, the differential findings obtained in platelets and leukocytes provided substantial evidence that four of these would have an effect on VWF levels. In this first report using next generation sequencing technology to unravel the effects of VWF mutations on splicing, the technique yielded valuable information. Our data bring to light the importance of studying the effect of synonymous and missense mutations on VWF splicing to improve the current knowledge of the molecular mechanisms behind von Willebrand disease. clinicaltrials.gov identifier:02869074.
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Affiliation(s)
- Nina Borràs
- Banc de Sang i Teixits, Barcelona, Spain.,Institut de Recerca Vall d'Hebron -Universitat Autònoma de Barcelona (VHIR-UAB), Spain
| | | | - Javier Batlle
- Complexo Hospitalario Universitario A Coruña, INIBIC, Spain
| | | | | | | | | | | | - Esther Lourés
- Complexo Hospitalario Universitario A Coruña, INIBIC, Spain
| | - Rafael Parra
- Banc de Sang i Teixits, Barcelona, Spain.,Institut de Recerca Vall d'Hebron -Universitat Autònoma de Barcelona (VHIR-UAB), Spain
| | - Carme Altisent
- Institut de Recerca Vall d'Hebron -Universitat Autònoma de Barcelona (VHIR-UAB), Spain
| | - Ana Rosa Cid
- Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | | | - Noelia Cabrera
- Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Andrés Moret
- Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | | | - Nira Navarro
- Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | | | | | - Ana Moreto
- Hospital Universitario Cruces, Barakaldo, Spain
| | | | | | | | | | | | | | | | | | | | | | | | - José Mateo
- Hospital Sta Creu i St Pau, Barcelona, Spain
| | | | | | - Ángeles Palomo
- Hospital Regional Universitario Carlos Haya, Málaga, Spain
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Francisco Vidal
- Banc de Sang i Teixits, Barcelona, Spain .,Institut de Recerca Vall d'Hebron -Universitat Autònoma de Barcelona (VHIR-UAB), Spain.,CIBER de Enfermedades Cardiovasculares, Madrid, Spain
| | - Irene Corrales
- Banc de Sang i Teixits, Barcelona, Spain .,Institut de Recerca Vall d'Hebron -Universitat Autònoma de Barcelona (VHIR-UAB), Spain
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30
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Wang G, Zhao W, Yang Y, Yang G, Wei Z, Guo J. Identification of biomarkers of venous thromboembolism by bioinformatics analyses. Medicine (Baltimore) 2018; 97:e0152. [PMID: 29620629 PMCID: PMC5902267 DOI: 10.1097/md.0000000000010152] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Venous thromboembolism (VTE) is a common vascular disease and a major cause of mortality. This study intended to explore the biomarkers associated with VTE by bioinformatics analyses.Based on Gene Expression Omnibus (GEO) database, the GSE19151 expression profile data were downloaded. The differentially expressed genes (DEGs) between single VTE (sVTE)/recurrent VTE (rVTE) and control were identified. Then, pathway enrichment analysis of DEGs were performed, followed by protein-protein interaction (PPI) network construction.Total 433 upregulated and 222 downregulated DEGs were obtained between sVTE and control samples. For rVTE versus control, 625 upregulated and 302 downregulated DEGs were identified. The overlap DEGs were mainly enriched in the pathways related to ribosome, cancer, and immune disease. The DEGs specific to rVTE were enriched in several pathways, such as nod-like receptor signaling pathway. In the PPI network, 2 clusters of VTE genes, including ribosomal protein family genes and NADH family-ubiquinol-cytochrome genes, were identified, such as ribosomal protein L9 (RPL9), RPL5, RPS20, RPL23, and tumor protein p53 (TP53).The nod-like receptor signaling pathway, ribosomal protein family genes, such as RPL9, RPL5, RPS20, and RPL23, and DEG of TP53 may have the potential to be used as targets for diagnosis and treatment of VTE.
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Affiliation(s)
| | | | | | | | - Zhigang Wei
- Department of Surgery, The First Hospital of Shanxi Medical University, Taiyuan, PR, China
| | - Jiansheng Guo
- Department of Surgery, The First Hospital of Shanxi Medical University, Taiyuan, PR, China
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31
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Miao X, Rahman MFU, Jiang L, Min Y, Tan S, Xie H, Lee L, Wang M, Malmström RE, Lui WO, Li N. Thrombin-reduced miR-27b attenuates platelet angiogenic activities in vitro via enhancing platelet synthesis of anti-angiogenic thrombospondin-1. J Thromb Haemost 2018; 16:791-801. [PMID: 29442415 DOI: 10.1111/jth.13978] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Indexed: 12/29/2022]
Abstract
Essentials It is unclear if platelet micro-RNAs can regulate de novo protein synthesis of platelets. Platelet de novo protein synthesis of thrombospondin-1 (TSP-1) was induced by thrombin. Thrombin stimulation in vitro altered platelet microRNA profiles, including decreased miR-27b. Decreased miR-27b hampers platelet angiogenic activities via enhancing de novo TSP-1 synthesis. SUMMARY Background Platelets can synthesize proteins upon activation. Platelets contain a number of microRNAs (miRNA) and a fully functional miRNA effector machinery. It is, however, unclear if platelet miRNAs can regulate protein synthesis of platelets, and whether the regulation may produce a physiological impact. Objectives To investigate if and how platelet miRNAs regulate de novo syntheses of angiogenic regulators and subsequently modulate platelet angiogenic activities. Methods and Results Microarray-based miRNA profiling showed that thrombin stimulation in vitro down- or up-regulated a number of platelet miRNAs, both in the total platelet miRNAs and in Ago2-associated miRNAs. Among those altered miRNAs, miR-27b was down-regulated in both the total and Ago2-immunoprecipitated miRNA profiles of platelets, which was confirmed by reverse transcription-quantitative PCR (RT-qPCR). Using western blotting assays, we showed that thrombin induced platelet de novo synthesis of thrombospondin-1, and that the level of thrombospondin-1 synthesis could reach a level of 3-5-fold higher than that before thrombin stimulation. With either the platelet precursor megakaryocyte cell line MEG-01 cells or mature platelets, we demonstrated that transfection of miR-27b mimic, but not the negative control of miRNA mimic, markedly reduced thrombospondin-1 protein levels. The latter subsequently enhanced platelet-dependent endothelial tube formation on matrigel. Conclusions Thrombin stimulation in vitro reduces platelet miR-27b levels that may markedly enhance thrombin-evoked platelet de novo synthesis of thrombospondin-1. Elevation of platelet miR-27b by transfection inhibits thrombospondin-1 synthesis, and subsequently enhances platelet pro-angiogenic activities. Hence, platelet activation-dependent reduction of miR-27b levels may represent a novel negative regulatory mechanism of platelet angiogenic activities.
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Affiliation(s)
- X Miao
- Department of Medicine-Solna, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
| | - M F-U Rahman
- Department of Medicine-Solna, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
| | - L Jiang
- Department of Medicine-Solna, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
- Department of Pathology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, China
| | - Y Min
- Department of Medicine-Solna, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
| | - S Tan
- Department of Medicine-Solna, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
| | - H Xie
- Department of Oncology-Pathology and Cancer Center Karolinska, Karolinska University Hospital-Solna, Stockholm, Sweden
- School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - L Lee
- Department of Oncology-Pathology and Cancer Center Karolinska, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - M Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - R E Malmström
- Department of Medicine-Solna, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Pharmacology, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - W-O Lui
- Department of Oncology-Pathology and Cancer Center Karolinska, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - N Li
- Department of Medicine-Solna, Clinical Pharmacology Group, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Pharmacology, Karolinska University Hospital-Solna, Stockholm, Sweden
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Sut C, Tariket S, Aubron C, Aloui C, Hamzeh-Cognasse H, Berthelot P, Laradi S, Greinacher A, Garraud O, Cognasse F. The Non-Hemostatic Aspects of Transfused Platelets. Front Med (Lausanne) 2018. [PMID: 29536007 PMCID: PMC5835084 DOI: 10.3389/fmed.2018.00042] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Platelets transfusion is a safe process, but during or after the process, the recipient may experience an adverse reaction and occasionally a serious adverse reaction (SAR). In this review, we focus on the inflammatory potential of platelet components (PCs) and their involvement in SARs. Recent evidence has highlighted a central role for platelets in the host inflammatory and immune responses. Blood platelets are involved in inflammation and various other aspects of innate immunity through the release of a plethora of immunomodulatory cytokines, chemokines, and associated molecules, collectively termed biological response modifiers that behave like ligands for endothelial and leukocyte receptors and for platelets themselves. The involvement of PCs in SARs—particularly on a critically ill patient’s context—could be related, at least in part, to the inflammatory functions of platelets, acquired during storage lesions. Moreover, we focus on causal link between platelet activation and immune-mediated disorders (transfusion-associated immunomodulation, platelets, polyanions, and bacterial defense and alloimmunization). This is linked to the platelets’ propensity to be activated even in the absence of deliberate stimuli and to the occurrence of time-dependent storage lesions.
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Affiliation(s)
- Caroline Sut
- GIMAP-EA3064, Université de Lyon, Saint-Étienne, France.,Etablissement Français du Sang, Auvergne-Rhône-Alpes, Saint-Etienne, France
| | - Sofiane Tariket
- GIMAP-EA3064, Université de Lyon, Saint-Étienne, France.,Etablissement Français du Sang, Auvergne-Rhône-Alpes, Saint-Etienne, France
| | - Cécile Aubron
- Médecine Intensive Réanimation, Centre Hospitalier Régionale et Universitaire de Brest, Université de Bretagne Occidentale, Brest, France
| | - Chaker Aloui
- GIMAP-EA3064, Université de Lyon, Saint-Étienne, France
| | | | | | - Sandrine Laradi
- GIMAP-EA3064, Université de Lyon, Saint-Étienne, France.,Etablissement Français du Sang, Auvergne-Rhône-Alpes, Saint-Etienne, France
| | - Andreas Greinacher
- Institute for Immunology and Transfusion Medicine, University of Greifswald, Greifswald, Germany
| | - Olivier Garraud
- GIMAP-EA3064, Université de Lyon, Saint-Étienne, France.,Institut National de Transfusion Sanguine (INTS), Paris, France
| | - Fabrice Cognasse
- GIMAP-EA3064, Université de Lyon, Saint-Étienne, France.,Etablissement Français du Sang, Auvergne-Rhône-Alpes, Saint-Etienne, France
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Splicing of platelet resident pre-mRNAs upon activation by physiological stimuli results in functionally relevant proteome modifications. Sci Rep 2018; 8:498. [PMID: 29323256 PMCID: PMC5765118 DOI: 10.1038/s41598-017-18985-5] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 12/19/2017] [Indexed: 12/12/2022] Open
Abstract
Platelet activation triggers thrombus formation in physiological and pathological conditions, such as acute coronary syndromes. Current therapies still fail to prevent thrombotic events in numerous patients, indicating that the mechanisms modulating platelet response during activation need to be clarified. The evidence that platelets are capable of de novo protein synthesis in response to stimuli raised the issue of how megakaryocyte-derived mRNAs are regulated in these anucleate cell fragments. Proteogenomics was applied here to investigate this phenomeon in platelets activated in vitro with Collagen or Thrombin Receptor Activating Peptide. Combining proteomics and transcriptomics allowed in depth platelet proteome characterization, revealing a significant effect of either stimulus on proteome composition. In silico analysis revealed the presence of resident immature RNAs in resting platelets, characterized by retained introns, while unbiased proteogenomics correlated intron removal by RNA splicing with changes on proteome composition upon activation. This allowed identification of a set of transcripts undergoing maturation by intron removal during activation and resulting in accumulation of the corresponding peptides at exon-exon junctions. These results indicate that RNA splicing events occur in platelets during activation and that maturation of specific pre-mRNAs is part of the activation cascade, contributing to a dynamic fine-tuning of the transcriptome.
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Giubilato S, Leo A, Cosentino N, Fracassi F, Cataneo L, Porto I, Leone A, Burzotta F, Trani C, Biasucci L, Narducci M, Pulcinelli F, Crea F, Niccoli G. Predictors of thromboxane levels in patients with non-ST-elevation acute coronary syndromes on chronic aspirin therapy. Thromb Haemost 2017; 108:133-9. [DOI: 10.1160/th11-09-0635] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Accepted: 03/14/2012] [Indexed: 11/05/2022]
Abstract
SummaryHigh levels of thromboxane A2 (TxA2), a key mediator of platelet activation and aggregation, are associated with an increased risk of cardiovascular events. We aimed at assessing the predictors of higher plasma levels of TxB2, the stable metabolite of TxA2, in consecutive patients presenting with non-ST-elevation acute coronary syndrome (NSTE-ACS) on previous aspirin (ASA) treatment undergoing coronary angiography. Ninety-eight consecutive patients (age 61 ± 11, 75% males) with NSTE-ACS, on previous chronic ASA treatment, were prospectively enrolled in this study. Coronary disease extent was assessed by angiography according to the Bogaty score. In all patients, admission plasma levels of TxB2 (pg/ml) were measured by enzyme-linked immunosorbent assay, and patients showing TxB2 levels in the fourth quartile were compared to patients showing TxB2 levels in the lower quartiles. Multivariable logistic regression analysis showed that platelet count (odds ratio [OR] 1.18, 95% confidence interval [CI] 1.02–1.63, p=0.04), multivessel coronary disease (OR 1.37, 95% CI 1.13–3.67, p=0.03), and coronary atherosclerosis extent index (OR 1.91, 95% CI 1.45–6.79, p=0.001) were independent predictors of TxB2 level upper quartile. Of note, C-reactive protein serum levels were similar in patients with TxB2 levels in the upper quartile as compared to those in the lower quartiles (p=0.49). In conclusion, NSTE-ACS patients with severe coronary atherosclerosis may have incomplete suppression of TxA2 production despite chronic ASA therapy. This finding suggests that additional efforts should be made to lower TxA2 levels in patients with widespread coronary artery disease.
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Liu J, Song Q, Huang Y, Sun W, Lu D, Zhou B. R-lipoic acid overdosing affects platelet life span via ROS mediated autophagy. Platelets 2017; 29:695-701. [DOI: 10.1080/09537104.2017.1356450] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jing Liu
- Jiangsu Center for Safety Evaluation of Drugs, Jiangsu Province Institute of Materia Medica, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
| | - Qingqing Song
- Jiangsu Center for Safety Evaluation of Drugs, Jiangsu Province Institute of Materia Medica, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
| | - Yanwei Huang
- Jiangsu Center for Safety Evaluation of Drugs, Jiangsu Province Institute of Materia Medica, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
| | - Wu Sun
- Jiangsu Center for Safety Evaluation of Drugs, Jiangsu Province Institute of Materia Medica, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
| | - Dingqiang Lu
- Jiangsu Center for Safety Evaluation of Drugs, Jiangsu Province Institute of Materia Medica, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
| | - Bo Zhou
- Jiangsu Center for Safety Evaluation of Drugs, Jiangsu Province Institute of Materia Medica, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
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36
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Kanikarla-Marie P, Lam M, Menter DG, Kopetz S. Platelets, circulating tumor cells, and the circulome. Cancer Metastasis Rev 2017; 36:235-248. [DOI: 10.1007/s10555-017-9681-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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37
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Sunderland N, Skroblin P, Barwari T, Huntley RP, Lu R, Joshi A, Lovering RC, Mayr M. MicroRNA Biomarkers and Platelet Reactivity: The Clot Thickens. Circ Res 2017; 120:418-435. [PMID: 28104774 DOI: 10.1161/circresaha.116.309303] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/20/2016] [Accepted: 12/20/2016] [Indexed: 12/16/2022]
Abstract
Over the last few years, several groups have evaluated the potential of microRNAs (miRNAs) as biomarkers for cardiometabolic disease. In this review, we discuss the emerging literature on the role of miRNAs and other small noncoding RNAs in platelets and in the circulation, and the potential use of miRNAs as biomarkers for platelet activation. Platelets are a major source of miRNAs, YRNAs, and circular RNAs. By harnessing multiomics approaches, we may gain valuable insights into their potential function. Because not all miRNAs are detectable in the circulation, we also created a gene ontology annotation for circulating miRNAs using the gene ontology term extracellular space as part of blood plasma. Finally, we share key insights for measuring circulating miRNAs. We propose ways to standardize miRNA measurements, in particular by using platelet-poor plasma to avoid confounding caused by residual platelets in plasma or by adding RNase inhibitors to serum to reduce degradation. This should enhance comparability of miRNA measurements across different cohorts. We provide recommendations for future miRNA biomarker studies, emphasizing the need for accurate interpretation within a biological and methodological context.
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Affiliation(s)
- Nicholas Sunderland
- From the King's British Heart Foundation Centre, King's College London, United Kingdom (N.S., P.S., T.B., R.L., A.J., M.M.); and Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, United Kingdom (R.P.H., R.C.L.)
| | - Philipp Skroblin
- From the King's British Heart Foundation Centre, King's College London, United Kingdom (N.S., P.S., T.B., R.L., A.J., M.M.); and Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, United Kingdom (R.P.H., R.C.L.)
| | - Temo Barwari
- From the King's British Heart Foundation Centre, King's College London, United Kingdom (N.S., P.S., T.B., R.L., A.J., M.M.); and Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, United Kingdom (R.P.H., R.C.L.)
| | - Rachael P Huntley
- From the King's British Heart Foundation Centre, King's College London, United Kingdom (N.S., P.S., T.B., R.L., A.J., M.M.); and Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, United Kingdom (R.P.H., R.C.L.)
| | - Ruifang Lu
- From the King's British Heart Foundation Centre, King's College London, United Kingdom (N.S., P.S., T.B., R.L., A.J., M.M.); and Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, United Kingdom (R.P.H., R.C.L.)
| | - Abhishek Joshi
- From the King's British Heart Foundation Centre, King's College London, United Kingdom (N.S., P.S., T.B., R.L., A.J., M.M.); and Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, United Kingdom (R.P.H., R.C.L.)
| | - Ruth C Lovering
- From the King's British Heart Foundation Centre, King's College London, United Kingdom (N.S., P.S., T.B., R.L., A.J., M.M.); and Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, United Kingdom (R.P.H., R.C.L.)
| | - Manuel Mayr
- From the King's British Heart Foundation Centre, King's College London, United Kingdom (N.S., P.S., T.B., R.L., A.J., M.M.); and Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, United Kingdom (R.P.H., R.C.L.).
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38
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Wysokinski WE, Tafur A, Ammash N, Asirvatham SJ, Wu Y, Gosk-Bierska I, Grill DE, Slusser JP, Mruk J, McBane RD. Impact of atrial fibrillation on platelet gene expression. Eur J Haematol 2017; 98:615-621. [PMID: 28306170 DOI: 10.1111/ejh.12879] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2017] [Indexed: 02/01/2023]
Abstract
AIMS Platelets retain cytoplasmic messenger RNA and are capable of protein biosynthesis. Several diseases are known to impact the platelet transcriptome but the effect of non-valvular atrial fibrillation (NVAF) on platelet RNA transcript is essentially unknown. The aim of this study was to evaluate the impact of NVAF on platelet RNA transcript by measuring platelet genes expression in consecutive NVAF patients before and 3-4 months after pulmonary vein isolation (PVI) and compared to normal sinus rhythm controls (NSR). METHODS AND RESULTS RNA from isolated platelets were reverse transcribed, assayed against 15 genes using real-time qPCR, and expressed as mean cycle threshold (ΔCt) using beta-2-microglobulin as endogenous control. Expression of all evaluated genes, except cathepsin A gene, was significantly lower (higher ΔCt) in 103 NVAF patients compared to 55 NSR controls. Insulin-like growth factor binding protein acid labile subunit gene (IGFALS) had expression more than 16 fold-lower (17.0±2.8 vs 12.5±3.8, P<.001), follow by genes encoding for prostacyclin receptor, and for von Willebrand factor which had fourfold lower expression compared to NSR controls. Gender, type of atrial fibrillation, heart failure, hypertension, prior stroke, diabetes mellitus, and atherosclerosis were associated with different gene expression. Following PVI, expression of four genes significantly increased, particularly IGFALS gene (increased 256-fold) and ADAMT gene increased 16-fold); expression of three genes significantly decreased, and expression of eight genes has not changed. CONCLUSIONS Platelets are capable to respond to the circulatory environment of NVAF by altering transcript and changing prothrombotic status. This shows platelet potential for molecular "reprogramming" possibly induced by flow disturbances of NVAF.
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Affiliation(s)
| | - Alfonso Tafur
- Department of Cardiovascular Medicine, Vascular Surgery and Medicine Section, NorthShore University HealthSystem, Skokie, USA
| | - Naser Ammash
- Mayo Clinic and Foundation for Education and Research, Rochester, MN, USA
| | | | - Yanhong Wu
- Mayo Clinic and Foundation for Education and Research, Rochester, MN, USA
| | | | - Diane E Grill
- Mayo Clinic and Foundation for Education and Research, Rochester, MN, USA
| | - Joshua P Slusser
- Mayo Clinic and Foundation for Education and Research, Rochester, MN, USA
| | - Jozef Mruk
- Department of Internal Medicine, University of Kansas, School of Medicine-Wichita, Wichita, KS, USA
| | - Robert D McBane
- Mayo Clinic and Foundation for Education and Research, Rochester, MN, USA
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Freynhofer MK, Iliev L, Bruno V, Rohla M, Egger F, Weiss TW, Hübl W, Willheim M, Wojta J, Huber K. Platelet turnover predicts outcome after coronary intervention. Thromb Haemost 2017; 117:923-933. [PMID: 28229159 PMCID: PMC5442606 DOI: 10.1160/th16-10-0785] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 01/25/2017] [Indexed: 01/09/2023]
Abstract
Elevated platelet turnover contributes to high platelet reactivity. High platelet reactivity after percutaneous coronary intervention (PCI) is associated with major adverse cardiovascular events (MACE). The purpose of this study was to determine the prognostic value of platelet turnover and function with regard to MACE after PCI with stent implantation. In this prospective observational study, 486 consecutive patients after PCI on aspirin and clopidogrel were included to determine platelet turnover (mean platelet volume (MPV), reticulated platelet fraction (RPF)) and platelet function (multiple electrode aggregometry (MEA), vasodilator-stimulated phosphoprotein-phosphorylation (VASP-P) assay). At six-months follow-up, MACE occurred in 10.7 % of patients. RPF (odds ratio [OR]=1.173 (95% confidence interval [CI 95 %] 1.040-1.324), p=0.009) and MPV (OR=1.459 (CI 95 % 1.059-2.008), p=0.021) were univariable predictors of MACE, whereas VASP-P (OR=1.016 (CI 95 % 1.000-1.032), p=0.052) and MEA (OR=0.999 (CI 95 % 0.980-1.017), p=0.895) failed to predict MACE. RPF remained the only platelet variable independently associated with MACE. The best model to predict MACE included: troponin I (OR=1.007 (CI 95 % 1.002-1.012), p=0.009), RPF (OR=1.136 (CI 95 % 1.001-1.288), p=0.048), CRP (OR=1.008 (CI 95 % 1.001-1.014), p=0.023) and history of myocardial infarction (OR=2.039 (CI 95 % 1.093-3.806), p=0.025). RPF (OR=1.211 (CI 95 % 1.042-1.406), p=0.012) was also independently associated with in-hospital bleedings. In conclusion, RPF as index of platelet turnover is an independent predictor of MACE and bleeding events in PCI patients on dual antiplatelet therapy. Since RPF can reliably be quantified along with routine haemograms, RPF might easily be applied in the setting of cardiovascular risk prediction.
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Affiliation(s)
- Matthias K Freynhofer
- Matthias K. Freynhofer, MD, 3rd Department of Medicine, Cardiology, Wilhelminen Hospital, Montleartstraße 37, A-1160, Vienna, Austria, Tel.: +43 1 49150 2301, Fax: +43 1 49150 2309, E-mail:
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40
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Yadav S, Williamson JK, Aronova MA, Prince AA, Pokrovskaya ID, Leapman RD, Storrie B. Golgi proteins in circulating human platelets are distributed across non-stacked, scattered structures. Platelets 2016; 28:400-408. [PMID: 27753523 DOI: 10.1080/09537104.2016.1235685] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Platelets are small, anucleate cell fragments that are central to hemostasis, thrombosis, and inflammation. They are derived from megakaryocytes from which they inherit their organelles. As platelets can synthesize proteins and contain many of the enzymes of the secretory pathway, one might expect all mature human platelets to contain a stacked Golgi apparatus, the central organelle of the secretory pathway. By thin section electron microscopy, stacked membranes resembling the stacked Golgi compartment in megakaryocytes and other nucleated cells can be detected in both proplatelets and platelets. However, the incidence of such structures is low and whether each and every platelet contains such a structure remains an open question. By single-label, immunofluorescence staining, Golgi glycosyltransferases are found within each platelet and map to scattered structures. Whether these structures are positive for marker proteins from multiple Golgi subcompartments remains unknown. Here, we have applied state-of-the-art techniques to probe the organization state of the Golgi apparatus in resting human platelets. By the whole cell volume technique of serial-block-face scanning electron microscopy (SBF-SEM), we failed to observe stacked, Golgi-like structures in any of the 65 platelets scored. When antibodies directed against Golgi proteins were tested against HeLa cells, labeling was restricted to an elongated juxtanuclear ribbon characteristic of a stacked Golgi apparatus. By multi-label immunofluorescence microscopy, we found that each and every resting human platelet was positive for cis, trans, and trans Golgi network (TGN) proteins. However, in each case, the proteins were found in small puncta scattered about the platelet. At the resolution of deconvolved, widefield fluorescence microscopy, these proteins had limited tendency to map adjacent to one another. When the results of 3D structured illumination microscopy (3D SIM), a super resolution technique, were scored quantitatively, the Golgi marker proteins failed to map together indicating at the protein level considerable degeneration of the platelet Golgi apparatus relative to the layered stack as seen in the megakaryocyte. In conclusion, we suggest that these results have important implications for organelle structure/function relationships in the mature platelet and the extent to which Golgi apparatus organization is maintained in platelets. Our results suggest that Golgi proteins in circulating platelets are present within a series of scattered, separated structures. As separate elements, selective sets of Golgi enzymes or sugar nucleotides could be secreted during platelet activation. The establishment of the functional importance, if any, of these scattered structures in sequential protein modification in circulating platelets will require further research.
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Affiliation(s)
- Shilpi Yadav
- a Department of Physiology and Biophysics , University of Arkansas for Medical Sciences , Little Rock , AR , USA
| | - Jonathan K Williamson
- a Department of Physiology and Biophysics , University of Arkansas for Medical Sciences , Little Rock , AR , USA
| | - Maria A Aronova
- b National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health , Bethesda , MD , USA
| | - Andrew A Prince
- a Department of Physiology and Biophysics , University of Arkansas for Medical Sciences , Little Rock , AR , USA
| | - Irina D Pokrovskaya
- a Department of Physiology and Biophysics , University of Arkansas for Medical Sciences , Little Rock , AR , USA
| | - Richard D Leapman
- b National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health , Bethesda , MD , USA
| | - Brian Storrie
- a Department of Physiology and Biophysics , University of Arkansas for Medical Sciences , Little Rock , AR , USA
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41
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Rubak P, Kristensen SD, Hvas AM. Flow cytometric analysis of platelet cyclooxygenase-1 and -2 and surface glycoproteins in patients with immune thrombocytopenia and healthy individuals. Platelets 2016; 28:387-393. [DOI: 10.1080/09537104.2016.1224829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Peter Rubak
- Centre for Haemophilia and Thrombosis, Department of Clinical Biochemistry, Aarhus University Hospital, Denmark
| | - Steen D. Kristensen
- Department of Cardiology, Aarhus University Hospital, Denmark
- Institute of Clinical Medicine, Aarhus University, Denmark
| | - Anne-Mette Hvas
- Centre for Haemophilia and Thrombosis, Department of Clinical Biochemistry, Aarhus University Hospital, Denmark
- Institute of Clinical Medicine, Aarhus University, Denmark
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42
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Chen W, Liang X, Syed AK, Jessup P, Church WR, Ware J, Josephson CD, Li R. Inhibiting GPIbα Shedding Preserves Post-Transfusion Recovery and Hemostatic Function of Platelets After Prolonged Storage. Arterioscler Thromb Vasc Biol 2016; 36:1821-8. [PMID: 27417583 DOI: 10.1161/atvbaha.116.307639] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 06/23/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The platelet storage lesion accelerates platelet clearance after transfusion, but the underlying molecular mechanism remains elusive. Although inhibiting sheddase activity hampers clearance of platelets with storage lesion, the target platelet protein responsible for ectodomain shedding-induced clearance is not definitively identified. Monoclonal antibody 5G6 was developed recently to bind specifically human platelet receptor glycoprotein (GP)Ibα and inhibit its shedding but not shedding of other receptors. Here, the role of GPIbα shedding in platelet clearance after transfusion was addressed. APPROACH AND RESULTS Both human leukoreduced apheresis-derived platelets and transgenic mouse platelets expressing human GPIbα were stored at room temperature in the presence and absence of 5G6 Fab fragment. At various time points, aliquots of stored platelets were analyzed and compared. 5G6 Fab inhibited GPIbα shedding in both platelets during storage and preserved higher level of GPIbα on the platelet surface. Compared with age-matched control platelets, 5G6 Fab-stored platelets exhibited similar levels of platelet activation, degranulation, and agonist-induced aggregation. 5G6 Fab-stored human GPIbα platelets exhibited significantly higher post-transfusion recovery and in vivo hemostatic function in recipient mice than control platelets. Consistently, 5G6 Fab-stored, 8-day-old human platelets produced similar improvement in post-transfusion recovery in immunodeficient mice and in ex vivo thrombus formation over collagen under shear flow. CONCLUSIONS Specific inhibition of GPIbα shedding in the stored platelets improves post-transfusion platelet recovery and hemostatic function, providing clear evidence for GPIbα shedding as a cause of platelet clearance. These results suggest that specific inhibition of GPIbα shedding may be used to optimize platelet storage conditions.
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Affiliation(s)
- Wenchun Chen
- From the Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics (W.C., X.L., A.K.S., C.D.J., R.L.) and Department of Pathology (P.J., C.D.J.), Emory University School of Medicine, GA; Green Mountain Antibodies, Burlington, VT (W.R.C.); and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR (J.W.)
| | - Xin Liang
- From the Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics (W.C., X.L., A.K.S., C.D.J., R.L.) and Department of Pathology (P.J., C.D.J.), Emory University School of Medicine, GA; Green Mountain Antibodies, Burlington, VT (W.R.C.); and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR (J.W.)
| | - Anum K Syed
- From the Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics (W.C., X.L., A.K.S., C.D.J., R.L.) and Department of Pathology (P.J., C.D.J.), Emory University School of Medicine, GA; Green Mountain Antibodies, Burlington, VT (W.R.C.); and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR (J.W.)
| | - Paula Jessup
- From the Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics (W.C., X.L., A.K.S., C.D.J., R.L.) and Department of Pathology (P.J., C.D.J.), Emory University School of Medicine, GA; Green Mountain Antibodies, Burlington, VT (W.R.C.); and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR (J.W.)
| | - William R Church
- From the Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics (W.C., X.L., A.K.S., C.D.J., R.L.) and Department of Pathology (P.J., C.D.J.), Emory University School of Medicine, GA; Green Mountain Antibodies, Burlington, VT (W.R.C.); and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR (J.W.)
| | - Jerry Ware
- From the Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics (W.C., X.L., A.K.S., C.D.J., R.L.) and Department of Pathology (P.J., C.D.J.), Emory University School of Medicine, GA; Green Mountain Antibodies, Burlington, VT (W.R.C.); and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR (J.W.)
| | - Cassandra D Josephson
- From the Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics (W.C., X.L., A.K.S., C.D.J., R.L.) and Department of Pathology (P.J., C.D.J.), Emory University School of Medicine, GA; Green Mountain Antibodies, Burlington, VT (W.R.C.); and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR (J.W.)
| | - Renhao Li
- From the Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics (W.C., X.L., A.K.S., C.D.J., R.L.) and Department of Pathology (P.J., C.D.J.), Emory University School of Medicine, GA; Green Mountain Antibodies, Burlington, VT (W.R.C.); and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR (J.W.).
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43
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Koenen RR. The prowess of platelets in immunity and inflammation. Thromb Haemost 2016; 116:605-12. [PMID: 27384503 DOI: 10.1160/th16-04-0300] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 06/06/2016] [Indexed: 02/07/2023]
Abstract
Platelets not only serve as essential haemostatic cells, they also have important roles in immune defence and inflammation. Despite not having a nucleus, platelets contain physiologically relevant amounts of RNA, which can be spliced and translated into functional proteins. In addition, platelets have the ability to bind to numerous other cells, such as leukocytes and vascular cells. During those interactions, platelets can modulate cellular responses, resulting in e. g. inflammatory activation or apoptosis. Recent studies have demonstrated that platelets can influence the outcomes of bacterial and viral infection, as well as the extent of tissue injury after ischaemia. Platelets also carry considerable amounts of cytokines and growth factors in their secretory granules, preformed for rapid secretion. Those properties in combination with the sheer amount of platelets circulating in the blood stream make them an important force in the immune response during health and disease. In this overview, recent findings concerning those interesting properties of platelets beyond haemostasis are discussed.
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Affiliation(s)
- Rory R Koenen
- Rory R. Koenen, PhD, Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands, Tel.: +31 43 3881674, Fax: +31 43 3884159, E-mail:
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44
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Schubert P, Culibrk B, Karwal S, Goodrich RP, Devine DV. Protein translation occurs in platelet concentrates despite riboflavin/UV light pathogen inactivation treatment. Proteomics Clin Appl 2016; 10:839-50. [DOI: 10.1002/prca.201500139] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 05/15/2016] [Accepted: 05/22/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Peter Schubert
- Centre for Innovation; Canadian Blood Services, University of British Columbia; Vancouver BC Canada
- Centre for Blood Research, University of British Columbia; Vancouver BC Canada
- Department of Pathology and Laboratory Medicine; University of British Columbia; Vancouver BC Canada
| | - Brankica Culibrk
- Centre for Innovation; Canadian Blood Services, University of British Columbia; Vancouver BC Canada
- Centre for Blood Research, University of British Columbia; Vancouver BC Canada
| | - Simrath Karwal
- Centre for Innovation; Canadian Blood Services, University of British Columbia; Vancouver BC Canada
- Centre for Blood Research, University of British Columbia; Vancouver BC Canada
| | | | - Dana V. Devine
- Centre for Innovation; Canadian Blood Services, University of British Columbia; Vancouver BC Canada
- Centre for Blood Research, University of British Columbia; Vancouver BC Canada
- Department of Pathology and Laboratory Medicine; University of British Columbia; Vancouver BC Canada
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45
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Vélez P, Ocaranza-Sánchez R, López-Otero D, Grigorian-Shamagian L, Rosa I, Bravo SB, González-Juanatey JR, García Á. 2D-DIGE-based proteomic analysis of intracoronary versus peripheral arterial blood platelets from acute myocardial infarction patients: Upregulation of platelet activation biomarkers at the culprit site. Proteomics Clin Appl 2016; 10:851-8. [DOI: 10.1002/prca.201500120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 04/01/2016] [Accepted: 04/14/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Paula Vélez
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS); Universidade de Santiago de Compostela; Santiago de Compostela Spain
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS); Santiago de Compostela Spain
| | - Raymundo Ocaranza-Sánchez
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS); Santiago de Compostela Spain
- Cardiology Department and Coronary Care Unit; Hospital Clínico Universitario de Santiago; Santiago de Compostela Spain
| | - Diego López-Otero
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS); Santiago de Compostela Spain
- Cardiology Department and Coronary Care Unit; Hospital Clínico Universitario de Santiago; Santiago de Compostela Spain
| | | | - Isaac Rosa
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS); Universidade de Santiago de Compostela; Santiago de Compostela Spain
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS); Santiago de Compostela Spain
| | - Susana Belén Bravo
- Proteomic Unit, Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS); Hospital Clínico Universitario de Santiago; Santiago de Compostela Spain
| | - José Ramón González-Juanatey
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS); Santiago de Compostela Spain
- Cardiology Department and Coronary Care Unit; Hospital Clínico Universitario de Santiago; Santiago de Compostela Spain
| | - Ángel García
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS); Universidade de Santiago de Compostela; Santiago de Compostela Spain
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS); Santiago de Compostela Spain
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46
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Osman A, Hitzler WE, Provost P. Peculiarities of studying the effects of pathogen reduction technologies on platelets. Proteomics Clin Appl 2016; 10:805-15. [PMID: 27095411 DOI: 10.1002/prca.201500124] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/27/2016] [Accepted: 04/14/2016] [Indexed: 12/31/2022]
Abstract
The transfusion of platelet concentrates (PCs) is mainly used for treatment of thrombocytopenic, trauma or surgery patients. The integrity and safety of these platelet preparations, however, is compromised by the presence of pathogens, such as viruses, bacteria and parasites. The transfer of allogeneic donor leukocytes contaminating PCs can also potentially cause adverse reactions in recipients. These considerations prompted the development and implementation of pathogen reduction technologies (PRT), which are based on chemically induced cross-linking and inactivation of nucleic acids. While the incumbent PRT may provide some protection against transfusion-transmitted infections, they are ineffective against infectious prions and may not inactivate other emerging pathogens. In addition, the safety of PRT concerning platelet viability and function has been questioned in several reports. Recent studies suggest that PRT, such as Intercept, may adversely affect the messenger RNA (mRNA) and microRNA content of platelets, as well as their functional integrity, which may compromise the clinical benefits of PRT. Here, we will discuss about the peculiarities of studying the effects of PRT on platelets, which will need to be taken into account in future studies aimed to characterize further, and polish, the rugged side of this otherwise useful and potentially important approach in transfusion medicine.
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Affiliation(s)
- Abdimajid Osman
- Department of Clinical Chemistry, Region Östergötland, Linköping, Sweden.,Department of Clinical and Experimental Medicine, University of Linköping, Linköping, Sweden
| | - Walter E Hitzler
- Transfusion Center, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Patrick Provost
- CHUQ Research Center/CHUL, Quebec, QC, Canada.,Faculty of Medicine, Université Laval, Quebec, QC, Canada
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Sirotkina OV, Laskovets AB, Andoskin PA, Emelyanov AK, Zabotina AM, Vavilova TV. Increase in GP IIb-IIIa and P2Y12 receptors in activated platelets as the possible indicator of de novo protein synthesis. Mol Biol 2016. [DOI: 10.1134/s0026893316010180] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Angénieux C, Maître B, Eckly A, Lanza F, Gachet C, de la Salle H. Time-Dependent Decay of mRNA and Ribosomal RNA during Platelet Aging and Its Correlation with Translation Activity. PLoS One 2016; 11:e0148064. [PMID: 26808079 PMCID: PMC4726520 DOI: 10.1371/journal.pone.0148064] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 01/12/2016] [Indexed: 01/23/2023] Open
Abstract
Previous investigations have indicated that RNAs are mostly present in the minor population of the youngest platelets, whereas translation in platelets could be biologically important. To attempt to solve this paradox, we studied changes in the RNA content of reticulated platelets, i.e., young cells brightly stained by thiazole orange (TObright), a fluorescent probe for RNAs. We provoked in mice strong thrombocytopenia followed by dramatic thrombocytosis characterized by a short period with a vast majority of reticulated platelets. During thrombocytosis, the TObright platelet count rapidly reached a maximum, after which TOdim platelets accumulated, suggesting that most of the former were converted into the latter within 12 h. Experiments on platelets, freshly isolated or incubated ex vivo at 37°C, indicated that their “RNA content”, here corresponding to the amounts of extracted RNA, and the percentage of TObright platelets were positively correlated. The “RNA Content” normalized to the number of platelets could be 20 to 40 fold higher when 80–90% of the cells were reticulated (20–40 fg/platelet), than when only 5–10% of control cells were TObright (less than 1fg/platelet). TObright platelets, incubated ex vivo at 37°C or transfused into mice, became TOdim within 24 h. Ex vivo at 37°C, platelets lost about half of their ribosomal and beta actin RNAs within 6 hours, and more than 98% of them after 24 hours. Accordingly, fluorescence in situ hybridization techniques confirmed the presence of beta actin mRNAs in most reticulated-enriched platelets, but detected them in only a minor subset of control platelets. In vitro, constitutive translation decreased considerably within less than 6 hours, questioning how protein synthesis in platelets, especially in non-reticulated ones, could have a biological function in vivo. Nevertheless, constitutive transient translation in young platelets under pathological conditions characterized by a dramatic increase in circulating reticulated platelets could deserve to be investigated.
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Affiliation(s)
- Catherine Angénieux
- UMR_S949, INSERM, Strasbourg, France
- Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - Blandine Maître
- UMR_S949, INSERM, Strasbourg, France
- Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - Anita Eckly
- UMR_S949, INSERM, Strasbourg, France
- Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - François Lanza
- UMR_S949, INSERM, Strasbourg, France
- Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - Christian Gachet
- UMR_S949, INSERM, Strasbourg, France
- Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - Henri de la Salle
- UMR_S949, INSERM, Strasbourg, France
- Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Strasbourg, France
- * E-mail:
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49
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Circular RNA enrichment in platelets is a signature of transcriptome degradation. Blood 2015; 127:e1-e11. [PMID: 26660425 DOI: 10.1182/blood-2015-06-649434] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 12/01/2015] [Indexed: 02/07/2023] Open
Abstract
In platelets, splicing and translation occur in the absence of a nucleus. However, the integrity and stability of mRNAs derived from megakaryocyte progenitor cells remain poorly quantified on a transcriptome-wide level. As circular RNAs (circRNAs) are resistant to degradation by exonucleases, their abundance relative to linear RNAs can be used as a surrogate marker for mRNA stability in the absence of transcription. Here we show that circRNAs are enriched in human platelets 17- to 188-fold relative to nucleated tissues and 14- to 26-fold relative to samples digested with RNAse R to selectively remove linear RNA. We compare RNAseq read depths inside and outside circRNAs to provide in silico evidence of transcript circularity, show that exons within circRNAs are enriched on average 12.7 times in platelets relative to nucleated tissues and identify 3162 genes significantly enriched for circRNAs, including some where all RNAseq reads appear to be derived from circular molecules. We also confirm that this is a feature of other anucleate cells through transcriptome sequencing of mature erythrocytes, demonstrate that circRNAs are not enriched in cultured megakaryocytes, and demonstrate that linear RNAs decay more rapidly than circRNAs in platelet preparations. Collectively, these results suggest that circulating platelets have lost >90% of their progenitor mRNAs and that translation in platelets occurs against the backdrop of a highly degraded transcriptome. Finally, we find that transcripts previously classified as products of reverse transcriptase template switching are both enriched in platelets and resistant to decay, countering the recent suggestion that up to 50% of rearranged RNAs are artifacts.
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50
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Bliden KP, Patrick J, Pennell AT, Tantry US, Gurbel PA. Drug delivery and therapeutic impact of extended-release acetylsalicylic acid. Future Cardiol 2015; 12:45-58. [PMID: 26356085 DOI: 10.2217/fca.15.60] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Current treatment guidelines recommend once-daily, low-dose acetylsalicylic acid (ASA; aspirin) for secondary prevention of cardiovascular events. However, the anti-thrombotic benefits of traditional ASA formulations may not extend over a 24-h period, especially in patients at high risk for a recurrent cardiovascular event. A next-generation, extended-release ASA formulation (ER-ASA) has been developed to provide 24-h anti-thrombotic coverage with once-daily dosing. The pharmacokinetics of ER-ASA indicates slower absorption and prolonged ASA release versus immediate-release ASA, with a favorable safety profile. ER-ASA minimizes systemic ASA absorption and provides sustained antiplatelet effects over a 24-h period.
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Affiliation(s)
- Kevin P Bliden
- Sinai Center for Thrombosis Research, Baltimore, MD, USA
| | - Jeff Patrick
- New Haven Pharmaceuticals, Inc., North Haven, CT, USA
| | | | - Udaya S Tantry
- Sinai Center for Thrombosis Research, Baltimore, MD, USA
| | - Paul A Gurbel
- Sinai Center for Thrombosis Research, Baltimore, MD, USA
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