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De Paoli SH, Patel M, Elhelu OK, Tarandovskiy ID, Tegegn TZ, Simak J. Structural analysis of platelet fragments and extracellular vesicles produced by apheresis platelets during storage. Blood Adv 2024; 8:207-218. [PMID: 37967384 PMCID: PMC10787271 DOI: 10.1182/bloodadvances.2023011325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/01/2023] [Accepted: 11/04/2023] [Indexed: 11/17/2023] Open
Abstract
ABSTRACT Platelets (PLTs) for transfusion can be stored for up to 7 days at room temperature (RT). The quality of apheresis PLTs decreases over storage time, which affects PLT hemostatic functions. Here, we characterized the membranous particles produced by PLT storage lesion (PSLPs), including degranulated PLTs, PLT ghosts, membrane fragments, and extracellular membrane vesicles (PEVs). The PSLPs generated in apheresis platelet units were analyzed on days 1, 3, 5, and 7 of RT storage. A differential centrifugation and a sucrose density gradient were used to separate PSLP populations. PSLPs were characterized using scanning and transmission electron microscopy (EM), flow cytometry (FC), and nanoparticle tracking analysis (NTA). PSLPs have different morphologies and a broad size distribution; FC and NTA showed that the concentration of small and large PSLPs increases with storage time. The density gradient separated 3 PSLP populations: (1) degranulated PLTs, PLT ghosts, and large PLT fragments; (2) PEVs originated from PLT activation and organelles released by necrotic PLTs; and (3) PEV ghosts. Most PSLPs expressed phosphatidyl serine and induced thrombin generation in the plasma. PSLPs contained extracellular mitochondria and some had the autophagosome marker LC3. PSLPs encompass degranulated PLTs, PLT ghosts, large PLT fragments, large and dense PEVs, and low-density PEV ghosts. The activation-related PSLPs are released, particularly during early stage of storage (days 1-3), and the release of apoptosis- and necrosis-related PSLPs prevails after that. No elevation of LC3- and TOM20-positive PSLPs indicates that the increase of extracellular mitochondria during later-stage storage is not associated with PLT mitophagy.
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Affiliation(s)
- Silvia H De Paoli
- Laboratory of Cellular Hematology, Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD
| | - Mehulkumar Patel
- Laboratory of Cellular Hematology, Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD
- Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, US Food and Drug Administration, Silver Spring, MD
| | - Oumsalama K Elhelu
- Laboratory of Cellular Hematology, Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD
| | - Ivan D Tarandovskiy
- Laboratory of Cellular Hematology, Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD
- Hemostasis Branch, Office of Therapeutic Products, Center of Biologics Evaluations and Research, US Food and Drug Administration, Silver Spring, MD
| | - Tseday Z Tegegn
- Laboratory of Cellular Hematology, Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD
| | - Jan Simak
- Laboratory of Cellular Hematology, Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD
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2
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Malvaux N, Defraigne F, Bartziali S, Bellora C, Mommaerts K, Betsou F, Schuhmacher A. In Vitro Comparative Study of Platelets Treated with Two Pathogen-Inactivation Methods to Extend Shelf Life to 7 Days. Pathogens 2022; 11:pathogens11030343. [PMID: 35335667 PMCID: PMC8949436 DOI: 10.3390/pathogens11030343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 11/26/2022] Open
Abstract
Background and Objectives: Since 2015, platelet products have been pathogen-inactivated (PI) at the Luxemburgish Red Cross (LRC) using Riboflavin and UV light (RF-PI). As the LRC should respond to hospital needs at any time, platelet production exceeds the demand, generating a discard rate of 18%. To reduce this, we consider the extension of storage time from 5 to 7 days. This study’s objective was to evaluate the in vitro 7-day platelet-storage quality, comparing two PI technologies, RF-PI and amotosalen/UVA light (AM-PI), for platelet pools from whole-blood donations (PPCs) and apheresis platelets collected from single apheresis donation (APCs). Materials and Methods: For each product type, 6 double-platelet concentrates were prepared and divided into 2 units; one was treated with RF-PI and the other by AM-PI. In vitro platelet-quality parameters were tested pre- and post-PI, at days 5 and 7. Results: Treatment and storage lesions were observed in PPCs and APCs with both PI methods. We found a higher rate of lactate increase and glucose depletion, suggesting a stronger stimulation of the glycolytic pathway, a higher Annexin V binding, and a loss of swirling in the RF-PI-treated units from day 5. The platelet loss was significantly higher in the AM-PI compared with the RF-PI units. Conclusions: Results suggest that RF-PI treatment has a higher deleterious impact on in vitro platelet quality compared to AM-PI, but we observed higher loss of platelets with AM-PI due to the post-illumination amotosalen adsorption step. If 7-day storage is needed, it can only be achieved with AM-PI, based on our quality criteria.
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Affiliation(s)
- Nicolas Malvaux
- Red Cross of Luxemburg, Boulevard Joseph II, 40, L-1840 Luxembourg, Luxembourg; (F.D.); (S.B.); (A.S.)
- Correspondence: ; Tel.: +352-2755-4000
| | - Fanette Defraigne
- Red Cross of Luxemburg, Boulevard Joseph II, 40, L-1840 Luxembourg, Luxembourg; (F.D.); (S.B.); (A.S.)
| | - Styliani Bartziali
- Red Cross of Luxemburg, Boulevard Joseph II, 40, L-1840 Luxembourg, Luxembourg; (F.D.); (S.B.); (A.S.)
| | - Camille Bellora
- Integrated Biobank of Luxembourg, 1 rue Louis Rech, L-3555 Dudelange, Luxembourg; (C.B.); (K.M.); (F.B.)
| | - Kathleen Mommaerts
- Integrated Biobank of Luxembourg, 1 rue Louis Rech, L-3555 Dudelange, Luxembourg; (C.B.); (K.M.); (F.B.)
- Luxembourg Center for Systems Biomedicine, 6 Av. du Swing, L-4367 Esch-sur-Alzette, Luxembourg
| | - Fay Betsou
- Integrated Biobank of Luxembourg, 1 rue Louis Rech, L-3555 Dudelange, Luxembourg; (C.B.); (K.M.); (F.B.)
- Laboratoire National de Sante, 1 rue Louis Rech, L-3555 Dudelange, Luxembourg
| | - Anne Schuhmacher
- Red Cross of Luxemburg, Boulevard Joseph II, 40, L-1840 Luxembourg, Luxembourg; (F.D.); (S.B.); (A.S.)
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3
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Xie L, Xu DM, Cai XJ, Zhang ZW, Yu WJ, Qiu JF, Xu CW, He CL, Xu XR, Yin J. Apoptosis in platelets from adult patients with chronic idiopathic thrombocytopenic purpura. Blood Coagul Fibrinolysis 2021; 32:434-442. [PMID: 34102655 DOI: 10.1097/mbc.0000000000001054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Adult chronic idiopathic thrombocytopenic purpura (cITP) is a chronic and usually life-long haemorrhagic disorder in which enhanced platelet destruction and weakened platelet production lead to thrombocytopenia. Platelets were isolated from blood samples collected from 40 adult patients with cITP and 40 healthy volunteers. Mitochondrial membrane potential (ΔΨm) and plasma membrane phosphatidylserine externalization were determined by flow cytometry, and activation of caspase-3 and expressions of Bax, Bak and Bcl-xL were analysed by western blotting. Flow cytometry showed increased mitochondrial depolarization and lower ΔΨm in platelets from adult patients with cITP. In addition, plasma membrane phosphatidylserine externalization was observed on platelets from adult patients with cITP, but rarely from healthy volunteers. Western blot analysis of platelet proteins revealed that, in adult cITP patients, caspase-3 was activated, which cleaved gelsolin and to release a 47-kDa fragment. Moreover, the expressions of Bax and Bak were elevated, and Bcl-xL was decreased markedly in platelets from adult patients with cITP. Our findings reveal, based on loss of mitochondrial membrane potential (Δψm), phosphatidylserine exposure, caspase-3 activation, enhanced expression of Bax and Bak, and attenuated expression of Bcl-xL, that platelet death in the pathogenesis of thrombocytopenia in chronic ITP in adults is apoptotic.
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Affiliation(s)
- Long Xie
- Department of Clinical Laboratory Medicine
| | | | | | | | | | | | | | | | - Xian-Ru Xu
- Division of Inventional Ultrasonic Therapeutics, the Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong Province, China
| | - Jun Yin
- Department of Clinical Laboratory Medicine
- Division of Hematology
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4
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Platelet Apoptotic Response May Be Associated With the Capacity of Aspirin to Inhibit Platelets. J Cardiovasc Pharmacol 2021; 76:584-591. [PMID: 33170592 DOI: 10.1097/fjc.0000000000000908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
An inadequate platelet response to aspirin (ASA) has been identified in some patients under chronic ASA treatment. The aim of this study was to analyze if ASA-sensitive and ASA-resistant platelets have differences in their apoptotic capability. Clinically stable ischemic coronary patients who had been taking ASA (100 mg/d) for at least 9 months before inclusion were divided into ASA-resistant (n = 11) and ASA-sensitive (n = 13) groups as defined by the PFA-100 test. Platelets from ASA-sensitive patients showed higher expression of the proapoptotic proteins Bak and Bax than those from ASA-resistant patients, although only Bak protein remained different when the results were adjusted by age. In resting platelets, neither caspase-3 activity nor cytosolic cytochrome C levels were different between both experimental groups. Stimulation of platelets with calcium ionophore (10 nmol/L, A23187) increased caspase-3 activity (1.91-fold higher; P < 0.05) and cytosolic cytochrome C levels (1.84-fold higher; P < 0.05) to a higher degree in ASA-sensitive than in ASA-resistant platelets. In conclusion, ASA-sensitive platelets seem to be better prepared to undergo apoptosis during robust platelet activation.
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5
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Repsold L, Pool R, Karodia M, Tintinger G, Becker P, Joubert AM. Apoptotic profiling of chronic myeloid leukaemia patients' platelets ex vivo before and after treatment with Imatinib. Cell Biochem Funct 2021; 39:562-570. [PMID: 33569808 DOI: 10.1002/cbf.3625] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/18/2021] [Accepted: 01/26/2021] [Indexed: 11/05/2022]
Abstract
Chronic myeloid leukaemia (CML) is a malignancy of the haematopoietic stem cells. The first line of treatment for CML, especially in developing countries, remains the first-generation tyrosine kinase inhibitor, Imatinib. Patients with CML are frequently diagnosed with platelet abnormalities. However, the specific mechanism of platelet abnormalities in CML remains unclear and poorly understood. The aim of this study was therefore to determine the apoptotic profiles of CML patients ex vivo on platelets before and after treatment with Imatinib. Blood samples of healthy volunteers and CML patients at diagnosis and after 6 months treatment with Imatinib were collected. Platelet counts, viability and activation were determined. Results showed that CML patients' platelet counts were elevated upon diagnosis and these levels statistically significantly decreased after 6 months of treatment. Platelet activation was significantly increased after 6 months of treatment compared to levels at diagnosis (P-value < .05). Similarly, platelet apoptosis was also increased after 6 months of treatment. Abnormalities in platelet functioning found in this study may partly be due to clonal proliferation of haematopoietic cells in CML patients, specifically of megakaryocyte precursors as well as the inhibition of platelet tyrosine kinase's and the inhibition of platelet-derived growth factor.
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Affiliation(s)
- Lisa Repsold
- Department of Physiology, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, South Africa
| | - Roger Pool
- Department of Haematology, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, South Africa
| | - Mohammed Karodia
- Department of Haematology, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, South Africa
| | - Gregory Tintinger
- Department of Internal Medicine, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, South Africa
| | - Piet Becker
- Research Office, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, South Africa
| | - Anna Margaretha Joubert
- Department of Physiology, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, South Africa
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6
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Reddoch-Cardenas KM, Peltier GC, Chance TC, Nair PM, Meledeo MA, Ramasubramanian AK, Cap AP, Bynum JA. Cold storage of platelets in platelet additive solution maintains mitochondrial integrity by limiting initiation of apoptosis-mediated pathways. Transfusion 2020; 61:178-190. [PMID: 33294977 DOI: 10.1111/trf.16185] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 07/03/2020] [Accepted: 07/08/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Cold storage of platelets in plasma maintains hemostatic function and is an attractive alternative to room temperature platelets (RTPs). We have recently shown that functional differences between cold-stored platelets (CSPs) and RTPs after 5-day storage are associated with mitochondrial respiration and that CSPs in platelet (PLT) additive solution (PAS) can maintain hemostatic function for at least 15 days. STUDY DESIGN AND METHODS This study tested the hypothesis that cold storage in PAS preserves mitochondrial integrity by reducing PLT apoptosis. CSPs and RTPs in plasma or PAS were stored and assayed for up to 15 days for mitochondrial function and integrity, mitochondrial-associated mRNA transcript expression, apoptotic proteins, and apoptotic flow cytometry metrics. RESULTS CSP preserved mitochondria-associated mRNA comparable to baseline levels, improved mitochondrial respiration, and minimized depolarization to Day 15. Additionally, CSPs had minimal induction of caspases, preservation of plasma membrane integrity, and low expression of pro-apoptotic Bax. Storage in PAS appeared to be protective for RTPs in some parameters and enhanced the effects of CSPs. CONCLUSION Mitochondrial function and molecular analyses defined CSP priming as distinctly different from the well-documented RTP storage lesion. While current blood bank storage at room temperature is limited to 5 to 7 days, refrigeration and storage in PAS for up to 15 days may represent an opportunity to enhance inventories and access to PLT hemostatic support for bleeding patients.
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Affiliation(s)
| | - Grant C Peltier
- US Army Institute of Surgical Research, JBSA-Fort Sam Houston, Sam Houston, Texas, USA
| | | | - Prajeeda M Nair
- US Army Institute of Surgical Research, JBSA-Fort Sam Houston, Sam Houston, Texas, USA
| | - Michael A Meledeo
- US Army Institute of Surgical Research, JBSA-Fort Sam Houston, Sam Houston, Texas, USA
| | | | - Andrew P Cap
- US Army Institute of Surgical Research, JBSA-Fort Sam Houston, Sam Houston, Texas, USA
| | - James A Bynum
- US Army Institute of Surgical Research, JBSA-Fort Sam Houston, Sam Houston, Texas, USA
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7
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Martyanov AA, Ignatova AA, Svidelskaya GS, Ponomarenko EA, Gambaryan SP, Sveshnikova AN, Panteleev MA. Programmed Cell Death and Functional Activity of Platelets in Case of Oncohematologic Diseases. BIOCHEMISTRY (MOSCOW) 2020; 85:1267-1276. [PMID: 33202211 DOI: 10.1134/s0006297920100144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Programmed cell death of non-nucleated blood cells - platelets - could be associated with pathophysiology of oncologic and oncohematologic diseases. It contributes to both bleedings (caused by the thrombocytopenia, which is induced by elimination of the platelets) and thrombosis (caused by the processes of blood coagulation on the surface of phosphatidylserine exposing platelets). Here we characterized functional responses of platelets from the patients with various oncological disorders undergoing chemotherapy and compared them to the platelets from the healthy donors and platelets pre-incubated with apoptosis inducer ABT-737. Some patients exhibited diminished capability of platelets to aggregate. Immunophenotyping of these platelets revealed their pre-activation in comparison to the platelets from the healthy donors. Calcium signaling analysis revealed that in the patient-derived platelets, as well as in the apoptotic platelets, intracellular calcium levels were increased in resting cells. However, moderate level of this increase together with weak expression of phosphatidylserine allows us to assume that apoptotic processes in the circulating platelets from the patients are limited.
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Affiliation(s)
- A A Martyanov
- Center for Theoretical Problems of Physico-Chemical Pharmacology, Russian Academy of Sciences, Moscow, 109029, Russia.,Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, 117198, Russia.,Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334, Russia.,Faculty of Physics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - A A Ignatova
- Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, 117198, Russia
| | - G S Svidelskaya
- Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, 117198, Russia
| | - E A Ponomarenko
- Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, 117198, Russia
| | - S P Gambaryan
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, 194223, Russia
| | - A N Sveshnikova
- Center for Theoretical Problems of Physico-Chemical Pharmacology, Russian Academy of Sciences, Moscow, 109029, Russia.,Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, 117198, Russia.,Faculty of Physics, Lomonosov Moscow State University, Moscow, 119991, Russia.,Department of Normal Physiology, Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, 119991, Russia
| | - M A Panteleev
- Center for Theoretical Problems of Physico-Chemical Pharmacology, Russian Academy of Sciences, Moscow, 109029, Russia. .,Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, 117198, Russia.,Faculty of Physics, Lomonosov Moscow State University, Moscow, 119991, Russia
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8
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Noulsri E, Lerdwana S. Affordable, Reliable Dual-Platform Approach to Quantitating Phosphatidylserine-Exposing Platelets in Platelet Components. Lab Med 2020; 51:186-192. [PMID: 31278411 DOI: 10.1093/labmed/lmz048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To compare the number of phosphatidylserine (PS)-exposing platelets obtained using the dual-platform approach and bead-based flow cytometry. METHODS Platelets were enumerated using the ADVIA 2010i instrument (Siemens AG). The numbers and percentages of PS-exposing platelets in 175 platelet products were determined using a FACSCalibur flow cytometer (Becton, Dickinson and Company) and counting beads. RESULTS Our results showed good correlation (r2 = 0.96; P <.001) between the PS-exposing platelets obtained using counting beads and the dual-platform approach. The results of Bland-Altman analysis showed a bias of +46,449 cells per µL and a limit of agreement (LOA) from -197,863 to 290,762 cells per µL. Also, 8 measurements (5.0%) revealed a number of PS-exposing platelets outside the LOA ranges. Further, 21 measurements (12.0%) revealed greater than 2-fold changes in the number of PS-exposing platelets. CONCLUSIONS The results suggest that the dual-platform approach is affordable and reliable for quantitating PS-exposing platelets as part of monitoring the quality of platelet products.
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Affiliation(s)
- Egarit Noulsri
- Research Division, Mahidol University, Bangkok, Thailand
| | - Surada Lerdwana
- Division of Instruments for Research, Office for Research and Development, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
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9
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Reddy EC, Rand ML. Procoagulant Phosphatidylserine-Exposing Platelets in vitro and in vivo. Front Cardiovasc Med 2020; 7:15. [PMID: 32195268 PMCID: PMC7062866 DOI: 10.3389/fcvm.2020.00015] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/30/2020] [Indexed: 12/11/2022] Open
Abstract
The physiological heterogeneity of platelets leads to diverse responses and the formation of discrete subpopulations upon platelet stimulation. Procoagulant platelets are an example of such subpopulations, a key characteristic of which is exposure either of the anionic aminophospholipid phosphatidylserine (PS) or of tissue factor on the activated platelet surface. This review focuses on the former, in which PS exposure on a subpopulation of platelets facilitates assembly of the intrinsic tenase and prothrombinase complexes, thereby accelerating thrombin generation on the activated platelet surface, contributing importantly to the hemostatic process. Mechanisms involved in platelet PS exposure, and accompanying events, induced by physiologically relevant agonists are considered then contrasted with PS exposure resulting from intrinsic pathway-mediated apoptosis in platelets. Pathologies of PS exposure, both inherited and acquired, are described. A consideration of platelet PS exposure as an antithrombotic target concludes the review.
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Affiliation(s)
- Emily C Reddy
- Developmental and Stem Cell Biology, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - Margaret L Rand
- Division of Haematology/Oncology, Translational Medicine, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada.,Departments of Laboratory Medicine & Pathobiology, Biochemistry, and Paediatrics, University of Toronto, Toronto, ON, Canada
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10
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Leytin V, Gyulkhandanyan AV, Freedman J. Platelet Apoptosis Can Be Triggered Bypassing the Death Receptors. Clin Appl Thromb Hemost 2019; 25:1076029619853641. [PMID: 31167567 PMCID: PMC6715000 DOI: 10.1177/1076029619853641] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In nucleated cells, the extrinsic pathway of the programmed cell death (apoptosis) is triggered by interaction of death ligands of the tumor necrosis factor superfamily with the death receptors on external cell surface membrane. In this review, we present evidence that, in contrast to nucleated cells, apoptosis in anucleate platelets can be induced through bypassing the death receptors, using instead specific receptors on the platelet surface mediating platelet activation, aggregation, and blood coagulation. These platelet surface receptors include the protease-activated receptor 1 of thrombin and glycoproteins IIbIIIa and Ibα, receptors of fibrinogen, and von Willebrand factor. The pro-apoptotic BH3 mimetic ABT-737 and calcium ionophore A23187 also trigger platelet apoptosis without using death receptors. These agents induce the intrinsic pathway of platelet apoptosis by direct targeting mitochondrial and extra-mitochondrial apoptotic responses.
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Affiliation(s)
- Valery Leytin
- 1 Toronto Platelet Immunobiology Group, St Michael's Hospital, Toronto, Ontario, Canada
| | | | - John Freedman
- 1 Toronto Platelet Immunobiology Group, St Michael's Hospital, Toronto, Ontario, Canada.,2 Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,3 Department of Medicine, University of Toronto, Toronto, Ontario, Canada
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11
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Nevzorova TA, Mordakhanova ER, Daminova AG, Ponomareva AA, Andrianova IA, Le Minh G, Rauova L, Litvinov RI, Weisel JW. Platelet factor 4-containing immune complexes induce platelet activation followed by calpain-dependent platelet death. Cell Death Discov 2019; 5:106. [PMID: 31263574 PMCID: PMC6591288 DOI: 10.1038/s41420-019-0188-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/29/2019] [Accepted: 06/05/2019] [Indexed: 01/23/2023] Open
Abstract
Heparin-induced thrombocytopenia (HIT) is a complication of heparin therapy sometimes associated with thrombosis. The hallmark of HIT is antibodies to the heparin/platelet factor 4 (PF4) complex that cause thrombocytopenia and thrombosis through platelet activation. Despite the clinical importance, the molecular mechanisms and late consequences of immune platelet activation are not fully understood. Here, we studied immediate and delayed effects of the complexes formed by human PF4 and HIT-like monoclonal mouse anti-human-PF4/heparin IgG antibodies (named KKO) on isolated human platelets in vitro. Direct platelet-activating effect of the KKO/PF4 complexes was corroborated by the overexpression of phosphatidylserine (PS) and P-selectin on the platelet surface. The immune platelet activation was accompanied by a decrease of the mitochondrial transmembrane potential (ΔΨm), concurrent with a significant gradual reduction of the ATP content in platelets, indicating disruption of energy metabolism. A combination of PS expression and mitochondrial depolarization induced by the PF4-containing immune complexes observed in a substantial fraction of platelets was considered as a sign of ongoing platelet death, as opposed to a subpopulation of activated live platelets with PS on the plasma membrane but normal ΔΨm. Both activated and dying platelets treated with KKO/PF4 formed procoagulant extracellular microvesicles bearing PS on their surface. Scanning and transmission electron microscopy revealed dramatic morphological changes of KKO/PF4-treated platelets, including their fragmentation, another indicator of cell death. Most of the effects of KKO/PF4 were prevented by an anti-FcγRII monoclonal antibody IV.3. The adverse functional and structural changes in platelets induced by the KKO/PF4 complexes were associated with strong time-dependent activation of calpain, but only trace cleavage of caspase 3. The results indicate that the pathogenic PF4-containing HIT-like immune complexes induce direct prothrombotic platelet activation via FcγRIIA receptors followed by non-apoptotic calpain-dependent death of platelets, which can be an important mechanism of thrombocytopenia during HIT development.
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Affiliation(s)
- Tatiana A. Nevzorova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan, Russian Federation 420008 Russia
| | - Elmira R. Mordakhanova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan, Russian Federation 420008 Russia
| | - Amina G. Daminova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan, Russian Federation 420008 Russia
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky str., Kazan, Russian Federation 420111 Russia
| | - Anastasia A. Ponomareva
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan, Russian Federation 420008 Russia
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky str., Kazan, Russian Federation 420111 Russia
| | - Izabella A. Andrianova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan, Russian Federation 420008 Russia
| | - Giang Le Minh
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan, Russian Federation 420008 Russia
| | - Lubica Rauova
- Children’s Hospital of Philadelphia, 3401 Civic Center Blvd, Philadelphia, PA 19104 USA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, 3401 Civic Center Blvd, Philadelphia, PA 19104 USA
| | - Rustem I. Litvinov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan, Russian Federation 420008 Russia
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, 421 Curie Boulevard, Philadelphia, PA 19104 USA
| | - John W. Weisel
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan, Russian Federation 420008 Russia
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, 421 Curie Boulevard, Philadelphia, PA 19104 USA
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12
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Liu D, Pei D, Hu H, Gu G, Cui W. Effects and Mechanisms of Vitamin C Post-Conditioning on Platelet Activation after Hypoxia/Reoxygenation. Transfus Med Hemother 2019; 47:110-118. [PMID: 32355470 DOI: 10.1159/000500492] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 04/17/2019] [Indexed: 12/11/2022] Open
Abstract
Background Platelet activation occurs upon ischemia/reperfusion and is related to the generation of reactive oxygen species (ROS) during this process. Vitamin C (VC) is a powerful antioxidant. VC scavenges ROS, reduces platelet activation, and attenuates reperfusion injury. However, the effects of VC on platelets undergoing hypoxia/reoxygenation (H/R) remain unclear. Objectives Herein, we evaluated the effects of VC on platelets in vitro following H/R and the related mechanisms. Method Fresh platelets were collected from 67 volunteers at the Blood Center of Hebei Province. Platelets were diluted with saline to a concentration of 2.00 × 10<sup>11</sup>/L. Aggregation and the curve slope were evaluated within 4 h with a whole-blood impedance analyzer. To determine the optimal experimental time, platelets were treated with hypoxia or reoxygenation for different times, and impedance aggregometry was carried out by measuring changes in electrical impedance induced by arachidonic acid (0.5 mM) and adenosine diphosphate (10 µM), thereby establishing the H/R model. Three antioxidants (VC, melatonin, and probucol) were used to treat platelets after H/R, and impedance aggregometry was used to determine their effects on platelet aggregation. The influence of VC on apoptosis-related indicators was detected. ROS and the mitochondrial membrane potential were observed by inverted fluorescence microscopy and flow cytometry, respectively. Related protein levels were detected by Western blotting. Results ROS scavengers inhibited platelet activation and aggregation in a concentration-dependent manner. VC post-conditioning scavenged ROS, downregulated cytochrome C, Bax, and caspase-9 proteins, and upregulated Bcl-2 protein. These effects collectively blocked platelet apoptosis and inhibited platelet aggregation. Conclusions VC inhibited platelet aggregation by blocking apoptosis. Thus, VC may have applications in the treatment of platelet-related diseases.
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Affiliation(s)
- Demin Liu
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Dongguo Pei
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Haijuan Hu
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Guoqiang Gu
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Wei Cui
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhuang, China
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13
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Wang L, Xie R, Fan Z, Yang J, Liang W, Wu Q, Wu MX, Wang Z, Lu Y. The contribution of oxidative stress to platelet senescence during storage. Transfusion 2019; 59:2389-2402. [PMID: 30942490 DOI: 10.1111/trf.15291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 01/06/2023]
Abstract
BACKGROUND Platelets for transfusion become senescent and dysfunctional during storage, resulting in a markedly short shelf life (5 days). We hypothesized that oxidative stress might account for this decline. STUDY DESIGN AND METHODS Human platelets were treated with or without antioxidants before storage, and samples were collected and analyzed at different time points. Platelet senescence was determined by senescence-associated β-galactosidase assay, and senescence-related platelet qualities were also analyzed. RESULTS Sign of senescence became evident after Day 3 and continued to increase over time. We also found that chemical induction of platelet activation did not affect senescence level, whereas apoptosis inducers showed a stimulative effect on platelet senescence. Moreover, this effect was not prevented by a pan-caspase inhibitor. Meanwhile, cellular and mitochondrial reactive oxygen species were found elevated during storage, and treatments with antioxidants successfully prevented this increase and also mitigated senescence levels of stored platelets. Finally, resveratrol, a natural antioxidant, was utilized as a novel storage additive to safely extend platelet shelf time. We showed that the addition of resveratrol efficiently postponed platelet senescence and ameliorated platelet storage lesion. CONCLUSIONS Platelets during storage became senescent and dysfunctional over time, and we found that oxidative stress might account for this decline. The addition of antioxidants effectively postponed senescence and ameliorated platelet storage lesion, which might provide a valuable reference to future platelet storage methodologies.
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Affiliation(s)
- Li Wang
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts.,Department of Dermatology, Harvard Medical School, Boston, Massachusetts
| | - Rufeng Xie
- Blood Engineering Laboratory, Shanghai Blood Center, Shanghai, China
| | - Zhijia Fan
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jie Yang
- Blood Engineering Laboratory, Shanghai Blood Center, Shanghai, China
| | - Wei Liang
- Department of Laboratory Medicine, The Second People's Hospital of Lianyungang City, Jiangsu Province, China
| | - Qiang Wu
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Clinical Laboratory Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Mei X Wu
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts.,Department of Dermatology, Harvard Medical School, Boston, Massachusetts
| | - Zhicheng Wang
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts.,Department of Dermatology, Harvard Medical School, Boston, Massachusetts
| | - Yuan Lu
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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14
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Wang S, Jiang T, Fan Y, Zhao S. A proteomic approach reveals the variation in human platelet protein composition after storage at different temperatures. Platelets 2018; 30:403-412. [PMID: 29595346 DOI: 10.1080/09537104.2018.1453060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cryopreservation can slow down the metabolism and decrease the risk of bacterial contamination. But, chilled platelets (PLTs) show a reduced period in circulation due to the rapid clearance by hepatic cells or spleen macrophages after transfusion. The deleterious changes that PLTs undergo are mainly considered the result of PLT protein variation. However, the basis for proteomic variation of stored PLTs remains poorly understood. Besides count, activation markers (CD62P and Annexin V), and aggregation, we used quantitative mass spectrometry to create the first comprehensive and quantitative human PLT proteome of samples stored at different temperatures (22°C, 10°C and -80°C). We found different conditions caused different platelet storage lesion (PSL). PLT count was decreased no matter at what temperature stored. PLTs viability at low temperature dropped by 21.78% and 11.21%, respectively, as compared 10.26% at room temperature, there were no significant differences between the storage methods. Membrane expression of CD62P gradually increased in all groups especially stored at 22°C up to 40% and 10°C up to 30%. However, exposure of PS on the PLT membrane was below 1% in every group. The PLT proteome showed there were 575 and 454 potential proteins identified by general iTRAQ analysis and phosphorylation iTRAQ a nalysis, respectively, among them, 33 common differentially expressed proteins caused by storage time and 44 caused by storage temperature Especially, membrane-bound proteins (such as FERMT3, STX4, MYL9 and TAGLN2) played key roles in PLT storage lesion. The pathways "Endocytosis", "Fc gamma R-mediated phagocytosis" and "Regulation of actin cytoskeleton" were affected predominantly by storage time. And the pathways "SNARE interactions in vesicular transport" and "Vasopressin-regulated water reabsorption" were affected by cold storage in our study. Proteomic results can help us to understand PLT biochemistry and physiology and thus unravel the mechanisms of PSL in time and space for more successful PLT transfusion therapy.
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Affiliation(s)
- Shichun Wang
- a Department of Blood Transfusion , Southwest Hospital, the Third Military Medical University , Chongqing , P.R. China
| | - Tianlun Jiang
- a Department of Blood Transfusion , Southwest Hospital, the Third Military Medical University , Chongqing , P.R. China
| | - Yahan Fan
- a Department of Blood Transfusion , Southwest Hospital, the Third Military Medical University , Chongqing , P.R. China
| | - Shuming Zhao
- a Department of Blood Transfusion , Southwest Hospital, the Third Military Medical University , Chongqing , P.R. China
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15
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Repsold L, Pool R, Karodia M, Tintinger G, Joubert AM. An overview of the role of platelets in angiogenesis, apoptosis and autophagy in chronic myeloid leukaemia. Cancer Cell Int 2017; 17:89. [PMID: 29118670 PMCID: PMC5664592 DOI: 10.1186/s12935-017-0460-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 10/29/2017] [Indexed: 12/31/2022] Open
Abstract
Amongst males, leukaemia is the most common cause of cancer-related death in individuals younger than 40 years of age whereas in female children and adolescents, leukaemia is the most common cause of cancer-related death. Chronic myeloid leukaemia (CML) is a chronic leukaemia of the haematopoietic stem cells affecting mostly adults. The disease results from a translocation of the Philadelphia chromosome in stem cells of the bone marrow. CML patients usually present with mild to moderate anaemia and with decreased, normal, or increased platelet counts. CML represents 0.5% of all new cancer cases in the United States (2016). In 2016, an estimated 1070 people would die of this disease in the United States. Platelets serve as a means for tumours to increase growth and to provide physical- and mechanical support to elude the immune system and to metastasize. Currently there is no literature available on the role that platelets play in CML progression, despite literature reporting the fact that platelet count and size are affected. Resistance to CML treatment with tyrosine kinase inhibitors can be as a result of acquired resistance ensuing from mutations in the tyrosine kinase domains, loss of response or poor tolerance. In CML this resistance has recently become linked to bone marrow (BM) angiogenesis which aids in the growth and survival of leukaemia cells. The discovery of the lungs as a site of haematopoietic progenitors, suggests that CML resistance is not localized to the bone marrow and that the mutations leading to the disease and resistance to treatment may also occur in the haematopoietic progenitors in the lungs. In conclusion, platelets are significantly affected during CML progression and treatment. Investigation into the role that platelets play in CML progression is vital including how treatment affects the cell death mechanisms of platelets.
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Affiliation(s)
- Lisa Repsold
- Department of Physiology, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, Gauteng South Africa
| | - Roger Pool
- Department of Haematology, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, Gauteng South Africa
| | - Mohammed Karodia
- Department of Haematology, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, Gauteng South Africa
| | - Gregory Tintinger
- Department of Internal Medicine, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, Gauteng South Africa
| | - Annie Margaretha Joubert
- Department of Physiology, Faculty of Health Sciences, School of Medicine, University of Pretoria, Pretoria, Gauteng South Africa
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16
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Affiliation(s)
- A. L. Peters
- Laboratory of Experimental Intensive Care and Anesthesiology/Department of Intensive Care; Academic Medical Centre; Amsterdam The Netherlands
| | - A. P. J. Vlaar
- Laboratory of Experimental Intensive Care and Anesthesiology/Department of Intensive Care; Academic Medical Centre; Amsterdam The Netherlands
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17
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Deng G, Yu S, Li Q, He Y, Liang W, Yu L, Xu D, Sun T, Zhang R, Li Q. Investigation of platelet apoptosis in adult patients with chronic immune thrombocytopenia. ACTA ACUST UNITED AC 2016; 22:155-161. [PMID: 27734765 DOI: 10.1080/10245332.2016.1237004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVES Immune thrombocytopenia (ITP) is an acquired and heterogeneous autoimmune-mediated hematological disease typically characterized by a low platelet count. Emerging evidence over the past several years suggests that platelet biogenesis and ageing are regulated, at least in part, by apoptotic mechanisms. However, the association between decreased platelets and apoptosis in ITP patients is poorly understood. To better understand the role of platelet apoptosis in ITP pathophysiology, we investigated apoptotic markers in platelets acquired from 40 chronic ITP patients. Furthermore, the results of ITP patients were compared to those from 40 healthy individuals. METHODS Markers of apoptosis, including phosphatidylserine (PS) exposure and mitochondrial inner membrane potentials (ΔΨm), were examined using flow cytometry. The expression of pro-apoptotic molecules such as Bak and Bax and anti-apoptotic molecules such as Bcl-xL were determined using quantitative real-time PCR (qRT-PCR) and Western blotting. RESULTS Our study demonstrated that the platelet mitochondrial membrane depolarization in chronic ITP patients tended to be higher than in healthy controls. Additionally, the proportion of platelets with surface-exposed PS in chronic ITP was significantly higher than that of controls. The results showed that the expression levels of Bak and Bax were significantly higher in chronic ITP patients than in healthy controls; Bcl-xL expression levels were significantly decreased in the platelets of chronic ITP patients compared to healthy controls. DISCUSSION AND CONCLUSION study indicates that the enhancement of platelet apoptosis observed in patients with chronic ITP may be one of the pathogenic mechanisms of chronic ITP.
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Affiliation(s)
- Gang Deng
- a The Ningbo Central Blood Station , Ningbo , China.,b The First Affiliated Hospital of Soochow University , Soochow , China
| | - Shifang Yu
- c The Department of Transfusion Medicine , The Second Affiliated Hospital of Zhejiang University School of Medicine , Hangzhou , China
| | - Qiming Li
- d The Department of Cardiology , The Fourth Affiliated Hospital of Zhejiang University School of Medicine , Yiwu , China
| | - Yunlei He
- a The Ningbo Central Blood Station , Ningbo , China
| | - Wei Liang
- a The Ningbo Central Blood Station , Ningbo , China
| | - Lu Yu
- a The Ningbo Central Blood Station , Ningbo , China
| | - Deyi Xu
- a The Ningbo Central Blood Station , Ningbo , China
| | - Tao Sun
- c The Department of Transfusion Medicine , The Second Affiliated Hospital of Zhejiang University School of Medicine , Hangzhou , China
| | - Ri Zhang
- b The First Affiliated Hospital of Soochow University , Soochow , China
| | - Qiang Li
- e The Department of Laboratory Medicine , The First Affiliated Hospital of Zhejiang Chinese Medical University , Hangzhou , China
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18
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Gyulkhandanyan AV, Allen DJ, Mykhaylov S, Lyubimov E, Ni H, Freedman J, Leytin V. Mitochondrial Inner Membrane Depolarization as a Marker of Platelet Apoptosis : Disclosure of Nonapoptotic Membrane Depolarization. Clin Appl Thromb Hemost 2016; 23:139-147. [PMID: 27637909 DOI: 10.1177/1076029616665924] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Availability of universal marker for the diagnosis of platelet apoptosis is an important but currently unresolved goal of platelet physiology investigations. Mitochondrial inner transmembrane potential (▵Ψm) depolarization is frequently used as a marker of apoptosis in nucleated cells and anucleate platelets. Since ▵Ψm depolarization in platelets is also frequently associated with concurrent induction of other apoptotic responses, it may appear that ▵Ψm depolarization is a good universal marker of platelet apoptosis. However, data presented in the current study indicate that this is incorrect. We report here fundamental differences in the effects of potassium ionophore valinomycin and calcium ionophore A23187 on human platelet apoptosis. Although both A23187-triggered and valinomycin-triggered ▵Ψm depolarization are strongly induced, the former is dependent on the opening of mitochondrial permeability transition pore (MPTP) and the latter is MPTP-independent. Furthermore, effects of calcium and potassium ionophores on other apoptotic events are also basically different. A23187 induces caspase-3 activation, proapoptotic Bax and Bak protein expression, phosphatidylserine exposure, and microparticle formation, whereas valinomycin does not induce these apoptotic manifestations. Discovery of targeted ▵Ψm depolarization not associated with apoptosis in valinomycin-treated platelets indicates that this marker should not be used as a single universal marker of platelet apoptosis in unknown experimental and clinical settings as it may lead to a false-positive apoptosis diagnosis.
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Affiliation(s)
- Armen V Gyulkhandanyan
- 1 Toronto Platelet Immunobiology Group, St. Michael's Hospital, Toronto, Ontario, Canada.,2 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - David J Allen
- 1 Toronto Platelet Immunobiology Group, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Sergiy Mykhaylov
- 1 Toronto Platelet Immunobiology Group, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Elena Lyubimov
- 1 Toronto Platelet Immunobiology Group, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Heyu Ni
- 1 Toronto Platelet Immunobiology Group, St. Michael's Hospital, Toronto, Ontario, Canada.,2 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada.,3 Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,4 Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,5 Canadian Blood Services, Ottawa, Ontario, Canada
| | - John Freedman
- 1 Toronto Platelet Immunobiology Group, St. Michael's Hospital, Toronto, Ontario, Canada.,2 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada.,3 Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,4 Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Valery Leytin
- 1 Toronto Platelet Immunobiology Group, St. Michael's Hospital, Toronto, Ontario, Canada.,6 Department of Physics, Ryerson University, Toronto, Ontario, Canada
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19
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Ex vivo apoptotic and autophagic influence of an estradiol analogue on platelets. Exp Hematol Oncol 2016; 5:18. [PMID: 27429862 PMCID: PMC4946154 DOI: 10.1186/s40164-016-0048-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 07/06/2016] [Indexed: 01/06/2023] Open
Abstract
Background Platelets are known contributors to the vascularization, metastasis and growth of tumors. Upon their interaction with cancer cells they are activated resulting in degranulation and release of constituents. Since the apoptotic- and autophagic effects of 2-ethyl-3-O-sulphamoyl-estra-1,3,5(10)16-tetraene (ESE-16) has been shown to occur in vitro and this compound was designed to bind to carbonic anhydrase II (CAII), the possible occurrence of these cell death mechanisms in platelets as circulatory components, is of importance. Methods Scanning electron microscopy was used to assess morphological changes in platelets after exposure to ESE-16. The possible apoptotic- and autophagic effect of ESE-16 in platelets was also determined by means of flow cytometry through measurement of Annexin V-FITC, caspase 3 activity, autophagy related protein 5 levels and light chain 3-I to light chain 3-II conversion. Results Scanning electron microscopy revealed no changes in ESE-16-treated platelets when compared to vehicle-treated samples. Apoptosis detection by Annexin V-FITC and measurement of caspase 3 activity indicated that there was no increase in apoptosis when platelets were exposed to ESE-16. The incidence of autophagy by measurement of autophagy related protein 5 levels and light chain 3-I to light chain 3-II conversion showed that exposure to ESE-16 did not cause the incidence of autophagy in platelets. Conclusion This is the first ex vivo study reporting on involvement of apoptosis- and autophagy-related targets in platelets after exposure to ESE-16, warranting further investigation in platelets of cancer patients.
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20
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Perspectives on the use of biomaterials to store platelets for transfusion. Biointerphases 2016; 11:029701. [DOI: 10.1116/1.4952450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Abstract
Platelet apoptosis occurs commonly under various conditions such as physical and chemical stimuli. Acute coronary syndrome (ACS), one of most important cardiovascular and cerebrovascular diseases, severely threats people's health and is usually accompanied with various complications especially bleeding. There might be platelet apoptosis in ACS, which might be responsible for the complication of bleeding. The objective of the present study was to explore whether there were apoptotic platelets in ACS patients. Vein blood was drawn from eleven ACS patients and eleven health people. Platelet-rich plasma was prepared and subjected to apoptotic events analysis including increased expression of pro-apoptotic proteins and decreased expression of anti-apoptotic proteins, exposure of phosphatidylserine (PS), mitochondrial inner membrane potential depolarization and caspase-3 activation by Western blot and flow cytometry. In addition, washed platelets from the normal people were prepared and treated with the platelet-poor plasma (PPP) of the ACS patients, and were further examined apoptotic cascades. Paired Student's t test was used in the data comparisons. There were more platelets with depolarized mitochondrial inner membrane potential in the ACS patients than those of the health donors. Levels of Bax and Bak increased, while expression of Bcl-2 and Bcl-XL decreased in platelets from ACS patients. Caspase-3 activation was observed in platelets from the patients with ACS. Interestingly, there were significant differences in PS exposure between the platelets from the ACS patients and the normal controls. Furthermore, apoptotic events were observed in the normal platelets incubated with PPP from the ACS patients. In addition, pretreatment of healthy platelets with anti-oxidants N-acetyl cysteine (NAC) or dithiothreitol (DTT) significantly reduced ACS patients-derived PPP-induced platelet apoptosis. Platelets from the ACS patients are incurred apoptosis. Antioxidants NAC or DTT can reduce ACS patients-derived PPP-induced platelet apoptosis in vitro.
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22
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Increased apoptosis in the platelets of patients with Alzheimer's disease and amnestic mild cognitive impairment. Clin Neurol Neurosurg 2016; 143:46-50. [PMID: 26895209 DOI: 10.1016/j.clineuro.2016.02.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 02/02/2016] [Accepted: 02/10/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVES Alzheimer's disease (AD), the most common cause of dementia, is a progressive, incurable neurodegenerative disorder. Platelet is a suitable source of human peripheral tissue to study pathological mechanisms occurring in the brain. The present study aims to investigate (1) whether abnormal apoptotic events besides involved in AD within the central neurologic system, could also occur at peripheral platelet level; (2) whether apoptosis at peripheral platelet level starts at the early stage of AD. PATIENTS AND METHODS Amnestic mild cognitive impairment (MCI), AD, and age-matched healthy individuals were recruited, and each group had 50 person. In the present study, we investigate whether alterations of caspase family and Bcl2 family could be found in the platelets in Alzheimer's disease (AD) and amnestic mild cognitive impairment (MCI) patients. The platelet levels of caspase protein and Bcl2 family were analyzed by western blot. RESULTS The results show that the platelet levels of caspase-3, caspase-9, Bad, and Bax significantly increased in AD and amnestic MCI. The increased apoptosis proteins levels in amnestic MCI were found between AD and normal controls. The anti-apoptosis protein Bcl2 increased in amnestic MCI, while decreased in AD. CONCLUSION We suggest that increased apoptosis exist in the platelet and might mirror apoptosis within the brain. Abnormal apoptosis may appear in the early of AD, and the ratio between pro- and anti-apoptotic protein levels partially determines the susceptibility of platelet to a death signal. In conclusion, platelet may be a good model to study apoptotic pathways of AD.
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Lannan KL, Refaai MA, Ture SK, Morrell CN, Blumberg N, Phipps RP, Spinelli SL. Resveratrol preserves the function of human platelets stored for transfusion. Br J Haematol 2015; 172:794-806. [PMID: 26683619 DOI: 10.1111/bjh.13862] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 10/07/2015] [Indexed: 12/30/2022]
Abstract
Stored platelets undergo biochemical, structural and functional changes that lead to decreased efficacy and safety of platelet transfusions. Not only do platelets acquire markers of activation during storage, but they also fail to respond normally to agonists post-storage. We hypothesized that resveratrol, a cardioprotective antioxidant, could act as a novel platelet storage additive to safely prevent unwanted platelet activation during storage, while simultaneously preserving normal haemostatic function. Human platelets treated with resveratrol and stored for 5 d released less thromboxane B2 and prostaglandin E2 compared to control platelets. Resveratrol preserved the ability of platelets to aggregate, spread and respond to thrombin, suggesting an improved ability to activate post-storage. Utilizing an in vitro model of transfusion and thromboelastography, clot strength was improved with resveratrol treatment compared to conventionally stored platelets. The mechanism of resveratrol's beneficial actions on stored platelets was partly mediated through decreased platelet apoptosis in storage, resulting in a longer half-life following transfusion. Lastly, an in vivo mouse model of transfusion demonstrated that stored platelets are prothrombotic and that resveratrol delayed vessel occlusion time to a level similar to transfusion with fresh platelets. We show resveratrol has a dual ability to reduce unwanted platelet activation during storage, while preserving critical haemostatic function.
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Affiliation(s)
- Katie L Lannan
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Majed A Refaai
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Sara K Ture
- Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Craig N Morrell
- Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Neil Blumberg
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Richard P Phipps
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.,Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.,Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Sherry L Spinelli
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
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Johnson L, Schubert P, Tan S, Devine DV, Marks DC. Extended storage and glucose exhaustion are associated with apoptotic changes in platelets stored in additive solution. Transfusion 2015; 56:360-8. [DOI: 10.1111/trf.13345] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 08/13/2015] [Accepted: 08/16/2015] [Indexed: 12/29/2022]
Affiliation(s)
- Lacey Johnson
- Research and Development; Australian Red Cross Blood Service; Sydney Australia
- Centre for Innovation; Canadian Blood Services; Vancouver British Columbia Canada
- Centre for Blood Research; University of British Columbia; Vancouver British Columbia Canada
| | - Peter Schubert
- Centre for Innovation; Canadian Blood Services; Vancouver British Columbia Canada
- Centre for Blood Research; University of British Columbia; Vancouver British Columbia Canada
| | - Shereen Tan
- Research and Development; Australian Red Cross Blood Service; Sydney Australia
| | - Dana V. Devine
- Centre for Innovation; Canadian Blood Services; Vancouver British Columbia Canada
- Centre for Blood Research; University of British Columbia; Vancouver British Columbia Canada
| | - Denese C. Marks
- Research and Development; Australian Red Cross Blood Service; Sydney Australia
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25
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Calgaroto NS, da Costa P, Cardoso AM, Pereira LB, Vieira JM, Dalenogare D, Pelinson LP, Baldissarelli J, Morsch VM, Schetinger MRC. Vitamin D3 prevents the increase in ectonucleotidase activities and ameliorates lipid profile in type 1 diabetic rats. Mol Cell Biochem 2015; 405:11-21. [DOI: 10.1007/s11010-015-2390-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 03/27/2015] [Indexed: 12/20/2022]
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26
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Pathogenesis of non-antibody mediated transfusion-related acute lung injury from bench to bedside. Blood Rev 2015; 29:51-61. [DOI: 10.1016/j.blre.2014.09.007] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 09/02/2014] [Indexed: 12/11/2022]
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27
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Chen Z, Schubert P, Culibrk B, Devine DV. p38MAPK is involved in apoptosis development in apheresis platelet concentrates after riboflavin and ultraviolet light treatment. Transfusion 2014; 55:848-57. [PMID: 25385501 DOI: 10.1111/trf.12905] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/29/2014] [Accepted: 09/08/2014] [Indexed: 01/04/2023]
Abstract
BACKGROUND Pathogen inactivation (PI) accelerates the platelet (PLT) storage lesion, including apoptotic-like changes. Proteomic studies have shown that phosphorylation levels of several kinases increase in PLTs after riboflavin and UV light (RF-PI) treatment. Inhibition of p38MAPK improved in vitro PLT quality, but the biochemical basis of this kinase's contribution to PLT damage requires further analysis. STUDY DESIGN AND METHODS In a pool-and-split design, apheresis PLT concentrates were either treated or kept untreated with or without selected kinase inhibitors. Samples were analyzed throughout 7 days of storage, monitoring in vitro quality variables including phosphatidylserine exposure, degranulation, and glucose metabolism. Changes in the protein expression of Bax, Bak, and Bcl-xL and the activities of caspase-3 and -9 were determined by immunoblot analysis and flow cytometry, respectively. RESULTS The expression levels of the proapoptotic proteins Bax and Bak, but not the antiapoptotic protein Bcl-xL, were significantly increased after the RF-PI treatment. This trend was reversed in the presence of p38MAPK inhibitor SB203580. As a result of increasing proapoptotic protein levels, caspase-3 and -9 activities were significantly increased in RF-PI treatment during storage compared with control (p < 0.05). Similarly, p38MAPK inhibition significantly reduced these caspase activities compared with vehicle control after RF-PI treatment (p < 0.05). CONCLUSION These findings revealed that p38MAPK is involved in signaling leading to apoptosis triggered by RF-PI. Elucidation of the biochemical processes influenced by PI is a necessary step in the development of strategies to improve the PLT quality and ameliorate the negative effects of PI treatment.
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Affiliation(s)
- Zhongming Chen
- Canadian Blood Services, Vancouver, British Columbia, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada
| | - Peter Schubert
- Canadian Blood Services, Vancouver, British Columbia, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Brankica Culibrk
- Canadian Blood Services, Vancouver, British Columbia, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada
| | - Dana V Devine
- Canadian Blood Services, Vancouver, British Columbia, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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Increased oxidative stress and the apoptosis of regulatory T cells in obese mice but not resistant mice in response to a high-fat diet. Cell Immunol 2014; 288:39-46. [DOI: 10.1016/j.cellimm.2014.02.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 02/11/2014] [Accepted: 02/14/2014] [Indexed: 01/30/2023]
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29
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Gyulkhandanyan AV, Mutlu A, Allen DJ, Freedman J, Leytin V. BH3-mimetic ABT-737 induces strong mitochondrial membrane depolarization in platelets but only weakly stimulates apoptotic morphological changes, platelet shrinkage and microparticle formation. Thromb Res 2014; 133:73-9. [DOI: 10.1016/j.thromres.2013.10.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 10/28/2013] [Accepted: 10/29/2013] [Indexed: 11/29/2022]
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30
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Elzagallaai AA, Koren G, Rieder MJ. The Predictive Value of the In Vitro Platelet Toxicity Assay (iPTA) for the Diagnosis of Hypersensitivity Reactions to Sulfonamides. J Clin Pharmacol 2013; 53:626-32. [DOI: 10.1002/jcph.85] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 03/19/2013] [Indexed: 12/31/2022]
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31
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E. Kehrel B, F. Brodde M. State of the art in platelet function testing. Transfus Med Hemother 2013; 40:73-86. [PMID: 23653569 PMCID: PMC3638976 DOI: 10.1159/000350469] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 03/05/2013] [Indexed: 12/20/2022] Open
Abstract
Platelets perform many functions in hemostasis but also in other areas of physiology and pathology. Therefore, it is obvious that many different function tests have been developed, each one conceived and standardized for a special purpose. This review will summarize the different fields in which platelet function testing is currently in use; diagnostics of patients with bleeding disorders, monitoring patients' response to anti-platelet therapy, monitoring in transfusion medicine (blood donors, platelet concentrates, and after transfusion), and monitoring in perioperative medicine to predict bleeding tendency. The second part of the review outlines different methods for platelet function testing, spanning bleeding time, and platelet counting as well as determining platelet adhesion, platelet secretion, platelet aggregation, platelet morphology, platelet signal transduction, platelet procoagulant activity, platelet apoptosis, platelet proteomics, and molecular biology.
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Affiliation(s)
- Beate E. Kehrel
- Department of Anesthesiology, Intensive Care and Pain Medicine, Experimental and Clinical Hemostasis, University of Münster, Germany
| | - Martin F. Brodde
- Department of Anesthesiology, Intensive Care and Pain Medicine, Experimental and Clinical Hemostasis, University of Münster, Germany
- OxProtect GmbH, Münster, Germany
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32
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Gyulkhandanyan AV, Mutlu A, Freedman J, Leytin V. Selective triggering of platelet apoptosis, platelet activation or both. Br J Haematol 2013; 161:245-54. [PMID: 23398569 DOI: 10.1111/bjh.12237] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 12/30/2012] [Indexed: 02/01/2023]
Abstract
Anucleate platelets perform two fundamental processes, activation and apoptosis. We elaborated an approach for selective and concurrent stimulation of platelet apoptosis and/or activation, processes important in haemostasis and platelet clearance. Human platelets were treated with BH3 mimetic ABT-737, thrombin, calcium ionophore A23187 and matched diluents. Apoptosis was determined as mitochondrial inner membrane potential (ΔΨm) depolarization and activation as P-selectin exposure. At optimal treatment conditions (90-180 min, 37°C), ABT-737 predominantly induced apoptosis, when 77-81% platelets undergo only ΔΨm depolarization. The ABT-737 impact on ΔΨm depolarization is strongly time- and temperature-dependent, and much higher at 37°C than at room temperature. In contrast, when platelets were treated with thrombin for 15-90 min at either temperature, activation-only was predominantly (79-85%) induced, whereas A23187 triggers both apoptosis and activation (73-81%) when platelets were treated for 15-60 min at 37°C or 15-90 min at room temperature. These data demonstrate that, depending on the triggering stimulus, platelets predominantly undergo ΔΨm depolarization-only, P-selectin exposure-only, or both responses, indicating that platelet apoptosis and activation are different phenomena driven by different mechanisms. The described model provides a basis for studying differential pharmacological manipulation of platelet apoptosis and activation and their role in haemostasis, thrombosis and platelet clearance.
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Affiliation(s)
- Armen V Gyulkhandanyan
- Division of Transfusion Medicine, Department of Laboratory Medicine, Keenan Research Centre in the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, ON, Canada
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Abstract
Aspirin is widely used in the treatment of a number of clinical conditions. Although aspirin is being thought to be a relatively "safe" medicine, it also has some side effects, particularly the risk of bleeding which may be severe and lead to death. The mechanisms, however, are not totally understood. It has been reported recently that aspirin induces apoptosis in many cell types. Thus, the aim of the current study is to explore whether aspirin induces platelet apoptosis. The data show that mitochondrial transmembrane potential (ΔΨm) depolarizations and phosphatidylserine (PS) exposures were dose-dependently induced by aspirin in platelets. To further confirm that aspirin incurs platelet apoptosis, caspase-3 activity was measured in platelets, and the result indicated that aspirin induced caspase-3 activation. Furthermore, the mean volume of platelets incubated with aspirin was obviously reduced. Caspase inhibitor z-VAD-fmk inhibited aspirin induced apoptotic platelet shrinkage and ΔΨm depolarization, but had no effect on PS exposure. In addition, platelets incubated with cyclooxygenase inhibitor indomethacin did not incur ΔΨm depolarazation and PS exposure. Taken together, the data indicate that aspirin induces platelet apoptosis via caspase-3 activation.
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Affiliation(s)
- Lili Zhao
- School of Biological Science and Medical Engineering, Beijing University of Aeronautics and Astronautics , Beijing , China
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34
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Sener A, Egemen G, Cevik O, Yanikkaya-Demirel G, Apikoglu-Rabus S, Ozsavci D. In vitro effects of nitric oxide donors on apoptosis and oxidative/nitrative protein modifications in ADP-activated platelets. Hum Exp Toxicol 2012; 32:225-35. [PMID: 23111882 DOI: 10.1177/0960327112455673] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nitric oxide (NO) is an important physiological signaling molecule. However, when produced in excessive amounts, NO can also have toxic effects. The aim of this study is to investigate the effects of exogenous- and endogenous-derived NO on oxidative modifications of proteins and apoptosis in activated platelets. Washed platelets were incubated with L-arginine or nitroso-glutathione (GSNO) in the presence of adenosine diphosphate (ADP). After incubation, caspase-3 activity, phosphatidylserine (PS) externalization and the potential of mitochondrial membrane as markers of apoptosis were measured. In addition, the alterations in protein carbonylation (PCO) and nitrotyrosine (NT) formation as markers of protein oxidation were examined. Platelet activation with ADP (20 µM) significantly increased PCO and NT levels and apoptotic events. After incubation with L-arginine, platelet NO production increased significantly. This L-arginine-induced increase caused decreases in formerly increased PCO and NT levels associated with ADP-induced platelet activation. Stimulation of NO production with L-arginine protected platelets from apoptosis. GSNO caused an increase in protein NT levels. Despite this change, GSNO was effective in inhibition of P-selectin expression, platelet aggregation, protein carbonylation and apoptosis. The results suggest that L-arginine and GSNO-mediated NO leads to the inhibition of key apoptotic processes including caspase-3 activation, PS exposure and low mitochondrial membrane potential in washed platelets. The inhibitory effect of platelet clearance of L-arginine and GSNO may be a novel useful therapeutic property in clinical application.
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Affiliation(s)
- A Sener
- Department of Biochemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey.
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35
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Mutlu A, Gyulkhandanyan AV, Freedman J, Leytin V. Activation of caspases-9, -3 and -8 in human platelets triggered by BH3-only mimetic ABT-737 and calcium ionophore A23187: caspase-8 is activated via bypass of the death receptors. Br J Haematol 2012; 159:565-71. [PMID: 23025479 DOI: 10.1111/bjh.12066] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Accepted: 08/27/2012] [Indexed: 11/30/2022]
Abstract
Platelet apoptosis and activation have been studied in human platelets treated with BH3-only mimetic ABT-737 and calcium ionophore A23187, agents triggering apoptosis through the intrinsic mitochondrial pathway. Platelet apoptosis was determined as activation of crucial apoptosis-associated caspases, initiator caspase-9 of intrinsic apoptosis pathway, executioner caspase-3 and initiator caspase-8 of extrinsic death receptor pathway, and platelet activation was detected by P-selectin (CD62) exposure on the platelet surface. We found that ABT-737 predominantly induced activation of caspases-9, -3 and -8 rather than CD62 exposure, whereas A23187 induces both caspases activation and CD62 exposure. Caspase-8 activation was stimulated independently of the extrinsic apoptosis pathway via mitochondrial membrane permeabilization and depolarization. These data suggest that (i) caspase-8 activation is triggered in ABT-737- and A23187-treated anucleate platelets through the mitochondria-initiated caspase activation cascade bypassing the death receptors, and (ii) ABT-737-treated platelets are a useful experimental tool for discerning the role of platelet apoptosis in platelet function and survival.
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Affiliation(s)
- Asuman Mutlu
- Division of Transfusion Medicine, Department of Laboratory Medicine, The Keenan Research Centre in the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, ON, Canada
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36
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Cisplatin induces platelet apoptosis through the ERK signaling pathway. Thromb Res 2012; 130:81-91. [PMID: 22445428 DOI: 10.1016/j.thromres.2012.02.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 01/28/2012] [Accepted: 02/19/2012] [Indexed: 01/12/2023]
Abstract
Cisplatin (cis-diamminedichloroplatinum II) is one of the most widely used anti-tumor agents. However, cisplatin-based chemotherapy is usually accompanied by adverse side effects such as thrombocytopenia, and the mechanism remains unclear. Here we show that cisplatin induced several platelet apoptotic events including up-regulation of Bax and Bak, down-regulation of Bcl-2 and Bcl-X(L), mitochondrial translocation of Bax, mitochondrial inner transmembrane potential depolarization, caspase-3 activation and phosphatidylserine (PS) exposure. Cisplatin dose-dependently induced activation of extracellular signal-regulated protein kinase (ERK) in platelets. Caspase-3 inhibitor z-DEVD-fmk dramatically inhibited cisplatin-induced caspase-3 activation and PS exposure without affecting ERK activation. Blockade of the ERK pathway significantly prevented platelet apoptosis. Furthermore, levels of reactive oxygen species (ROS) and Ca(2+) were significantly elevated by cisplatin, and scavenging of ROS and Ca(2+) obviously inhibited platelet apoptosis induced by cisplatin. In addition, cisplatin did not induce platelet activation, whereas it obviously impaired platelet functions. These data indicate that cisplatin induces platelet apoptosis through the ERK signaling pathway, which might contribute to cisplatin-related haematological toxicity.
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37
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Gyulkhandanyan AV, Mutlu A, Freedman J, Leytin V. Markers of platelet apoptosis: methodology and applications. J Thromb Thrombolysis 2012; 33:397-411. [DOI: 10.1007/s11239-012-0688-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Abstract
For many years, programmed cell death, known as apoptosis, was attributed exclusively to nucleated cells. Currently, however, apoptosis is also well-documented in anucleate platelets. This review describes extrinsic and intrinsic pathways of apoptosis in nucleated cells and in platelets, platelet apoptosis induced by multiple chemical stimuli and shear stresses, markers of platelet apoptosis, mitochodrial control of platelet apoptosis, and apoptosis mediated by platelet surface receptors PAR-1, GPIIbIIIa and GPIbα. In addition, this review presents data on platelet apoptosis provoked by aging of platelets in vitro during platelet storage, platelet apoptosis in pathological settings in humans and animal models, and inhibition of platelet apoptosis by cyclosporin A, intravenous immunoglobulin and GPIIbIIIa antagonist drugs.
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Affiliation(s)
- Valery Leytin
- Division of Transfusion Medicine, Department of Laboratory Medicine, The Keenan Research Centre in the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, ON, Canada.
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39
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Sahler J, Grimshaw K, Spinelli SL, Refaai MA, Phipps RP, Blumberg N. Platelet storage and transfusions: new concerns associated with an old therapy. ACTA ACUST UNITED AC 2011; 8:e9-e14. [PMID: 22662018 DOI: 10.1016/j.ddmec.2011.06.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Platelet transfusion has long been practiced with rudimentary knowledge about optimal storage conditions and their implications for efficacy and, particularly, safety. Recent concerns about complications such as inflammation, thrombosis and altered recipient immunity have been raised about platelet transfusion. This review will discuss recent important findings that have raised these issues about platelet transfusion associated morbidity, mortality and the possible role of platelet storage in these associations.
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Affiliation(s)
- Julie Sahler
- Department of Microbiology and Immunology, University of Rochester
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40
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41
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BCL2/BCL-X(L) inhibition induces apoptosis, disrupts cellular calcium homeostasis, and prevents platelet activation. Blood 2011; 117:7145-54. [PMID: 21562047 DOI: 10.1182/blood-2011-03-344812] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Apoptosis in megakaryocytes results in the formation of platelets. The role of apoptotic pathways in platelet turnover and in the apoptotic-like changes seen after platelet activation is poorly understood. ABT-263 (Navitoclax), a specific inhibitor of antiapoptotic BCL2 proteins, which is currently being evaluated in clinical trials for the treatment of leukemia and other malignancies, induces a dose-limiting thrombocytopenia. In this study, the relationship between BCL2/BCL-X(L) inhibition, apoptosis, and platelet activation was investigated. Exposure to ABT-263 induced apoptosis but repressed platelet activation by physiologic agonists. Notably, ABT-263 induced an immediate calcium response in platelets and the depletion of intracellular calcium stores, indicating that on BCL2/BCL-X(L) inhibition platelet activation is abrogated because of a diminished calcium signaling. By comparing the effects of ABT-263 and its analog ABT-737 on platelets and leukemia cells from the same donor, we show, for the first time, that these BCL2/BCL-X(L) inhibitors do not offer any selective toxicity but induce apoptosis at similar concentrations in leukemia cells and platelets. However, reticulated platelets are less sensitive to apoptosis, supporting the hypothesis that treatment with ABT-263 induces a selective loss of older platelets and providing an explanation for the transient thrombocytopenia observed on ABT-263 treatment.
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42
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Abstract
Platelet storage lesion (PSL), correlating with reduced in vivo recovery/survival and hemostatic capacity after transfusion, is characterized essentially by morphological and molecular evidence of platelet activation and energy consumption in the medium. Processes that limit shelf-life are multifactorial, and include both necrosis and apoptosis. PSL is greatly influenced by factors including duration of storage, temperature, ratio of platelet number to media volume, solution composition with respect to energy content and buffering capacity, and gas permeability of the container. Recent progress for slowing PSL has been made with storage media that more effectively fuel ATP production and buffer the inevitable effects of metabolism. Improved oxygen-permeability of containers also helps to maintain aerobic-dominant glycolysis. Patients stand to benefit from platelet products of higher intrinsic quality that store well until the moment of transfusion.
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43
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Zhang W, Liu J, Sun R, Zhao L, Du J, Ruan C, Dai K. Calpain activator dibucaine induces platelet apoptosis. Int J Mol Sci 2011; 12:2125-37. [PMID: 21731431 PMCID: PMC3127107 DOI: 10.3390/ijms12042125] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 03/06/2011] [Accepted: 03/18/2011] [Indexed: 11/19/2022] Open
Abstract
Calcium-dependent calpains are a family of cysteine proteases that have been demonstrated to play key roles in both platelet glycoprotein Ibα shedding and platelet activation and altered calpain activity is associated with thrombotic thrombocytopenic purpura. Calpain activators induce apoptosis in several types of nucleated cells. However, it is not clear whether calpain activators induce platelet apoptosis. Here we show that the calpain activator dibucaine induced several platelet apoptotic events including depolarization of the mitochondrial inner transmembrane potential, up-regulation of Bax and Bak, down-regulation of Bcl-2 and Bcl-XL, caspase-3 activation and phosphatidylserine exposure. Platelet apoptosis elicited by dibucaine was not affected by the broad spectrum metalloproteinase inhibitor GM6001. Furthermore, dibucaine did not induce platelet activation as detected by P-selectin expression and PAC-1 binding. However, platelet aggregation induced by ristocetin or α-thrombin, platelet adhesion and spreading on von Willebrand factor were significantly inhibited in platelets treated with dibucaine. Taken together, these data indicate that dibucaine induces platelet apoptosis and platelet dysfunction.
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Affiliation(s)
- Weilin Zhang
- School of Biological Science and Medical Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing 100083, China; E-Mails: (W.Z.); (J.L.); (R.S.); (L.Z.); (J.D.)
| | - Jun Liu
- School of Biological Science and Medical Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing 100083, China; E-Mails: (W.Z.); (J.L.); (R.S.); (L.Z.); (J.D.)
| | - Ruichen Sun
- School of Biological Science and Medical Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing 100083, China; E-Mails: (W.Z.); (J.L.); (R.S.); (L.Z.); (J.D.)
| | - Lili Zhao
- School of Biological Science and Medical Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing 100083, China; E-Mails: (W.Z.); (J.L.); (R.S.); (L.Z.); (J.D.)
| | - Juan Du
- School of Biological Science and Medical Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing 100083, China; E-Mails: (W.Z.); (J.L.); (R.S.); (L.Z.); (J.D.)
| | - Changgeng Ruan
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis, Ministry of Health, Suzhou, 215007, China; E-Mail:
| | - Kesheng Dai
- School of Biological Science and Medical Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing 100083, China; E-Mails: (W.Z.); (J.L.); (R.S.); (L.Z.); (J.D.)
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis, Ministry of Health, Suzhou, 215007, China; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: 0086-10-82339862; Fax: 0086-10-82127801
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Krishnan S, Gaspari M, Corte AD, Bianchi P, Crescente M, Cerletti C, Torella D, Indolfi C, de Gaetano G, Donati MB, Rotilio D, Cuda G. OFFgel-based multidimensional LC-MS/MS approach to the cataloguing of the human platelet proteome for an interactomic profile. Electrophoresis 2011; 32:686-95. [DOI: 10.1002/elps.201000592] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 12/13/2010] [Accepted: 12/26/2010] [Indexed: 11/05/2022]
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Apelseth TO, Hervig T, Bruserud O. Current practice and future directions for optimization of platelet transfusions in patients with severe therapy-induced cytopenia. Blood Rev 2011; 25:113-22. [PMID: 21316823 DOI: 10.1016/j.blre.2011.01.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Platelet transfusions are mainly used for patients with thrombocytopenia due to bone marrow failure, especially cancer patients developing severe chemotherapy-induced thrombocytopenia (e.g. patients with acute leukemia or other hematologic malignancies). A prophylactic transfusion strategy is now generally accepted in developed countries. Some clinical data, however, support the use of a therapeutic transfusion strategy at least for certain subsets of these patients. Several methodological approaches can then be used to evaluate the outcome of platelet transfusions, including peripheral blood platelet increments and bleeding assessments. Several factors will influence the efficiency of platelet transfusions; fever and ongoing hemorrhage are among the most important patient-dependent factors, but the number and quality of the transfused platelets are also important. The quality of transfused platelets can be evaluated by analyzing platelet activation, metabolism or senescence/apoptosis. Only evaluation of metabolism is included in international guidelines, but high-throughput methods for evaluation of activation and senescence/apoptosis are available and should be incorporated into routine clinical practice if future studies demonstrate that they reflect clinically relevant platelet characteristics. Finally, platelet transfusions have additional biological effects that may cause immunomodulation or altered angioregulation; at present it is not known whether these effects will influence the long-time prognosis of cancer patients. Thus, several questions with regard to the optimal use of platelet transfusions in cancer patients still need to be answered.
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Affiliation(s)
- Torunn O Apelseth
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Norway.
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46
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Abstract
It is becoming increasingly clear that most mammalian cells are capable of undergoing apoptosis and that, within particular lineages, specific apoptotic pathways have evolved to regulate survival and turnover. The role of apoptosis in the megakaryocyte lineage is an intriguing one. Various insults, such as chemotherapeutics, autoantibodies, and human immunodeficiency virus (HIV), have been suggested to induce the apoptotic death of megakaryocytes and/or their progenitors. Conversely, apoptotic processes have been implicated in megakaryocyte development and platelet production. Platelets also contain functional apoptotic pathways, which circumscribe their survival. It has even been suggested that platelet activation responses involve components of the apoptotic machinery, highlighting a potential role for apoptotic processes in hemostasis and thrombosis. This review discusses the current state of knowledge about how apoptosis and apoptotic proteins contribute to the generation and function of megakaryocytes and platelets.
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Affiliation(s)
- Michael J White
- Molecular Medicine Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
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47
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Rand ML, Wang H, Bang KWA, Teitel JM, Blanchette VS, Freedman J, Nurden AT. Phosphatidylserine exposure and other apoptotic-like events in Bernard-Soulier syndrome platelets. Am J Hematol 2010; 85:584-92. [PMID: 20658588 DOI: 10.1002/ajh.21768] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In the Bernard-Soulier syndrome (BSS), the giant platelets are said to have increased phosphatidylserine (PS) surface exposure in the resting state and shortened survival in the circulation. When normal platelets are activated, they undergo many biochemical and morphological changes, some of which are apoptotic. Herein, we investigated apoptotic-like events in BSS platelets upon activation, specifically, PS exposure, microparticle (MP) formation, cell shrinkage, and loss of mitochondrial inner membrane potential (DeltaPsi(m)). Platelets from two unrelated BSS patients were examined in whole blood; agonists used were collagen, thrombin, PAR1- or PAR4-activating peptides (APs), or combinations of collagen with thrombin, and the PAR-APs. Flow cytometry was used to measure PS exposure (annexin A5 binding), platelet-derived MPs (forward scatter; events <0.75 microm size), and DeltaPsi(m) (TMRM fluorescence). PS exposure was increased on resting and activated BSS platelets, and this was independent of the platelet size. MP formation by BSS platelets was generally enhanced. Cell shrinkage occurred on activation to form smaller, PS-exposing platelets in BSS and controls. A proportion of PS-exposing BSS and control platelets exhibited DeltaPsi(m) loss, but unlike controls, there was also loss of DeltaPsi(m) in the BSS platelets not exposing PS. Thus, BSS platelets undergo apoptotic-like events upon activation, with PS exposure and MP formation being enhanced. These events may play a role in the shortened survival in BSS, as well as affecting thrombin generation.
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Affiliation(s)
- Margaret L Rand
- Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, Canada.
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48
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Abstract
Apoptosis and necrosis represent distinct cell death processes that regulate mammalian development, physiology and disease. Apoptosis characteristically leads to the silent destruction and removal of cells in the absence of an inflammatory response. In contrast, necrotic cell death can induce physiologic inflammatory responses linked to tissue defense and repair. Although anucleate, platelets undergo programmed cell death, with apoptosis playing an important role in clearing effete platelets from the circulation. While it has long been recognized that procoagulant platelets exhibit characteristic features of dying cells, recent studies have demonstrated that platelet procoagulant function can occur independent of apoptosis. A growing body of evidence suggest that the biochemical, morphologic and functional changes underlying agonist-induced platelet procoagulant function are broadly consistent with cell necrosis, raising the possibility that distinct death pathways regulate platelet function and survival. In this article, we will discuss the mechanisms underlying apoptotic and necrotic cell death pathways and examine the evidence linking these pathways to the platelet procoagulant response. We will also discuss the potential contribution of these pathways to the platelet storage lesion and propose a simplified nomenclature to describe procoagulant platelets.
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49
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Investigating caspases and other markers of apoptosis in ITP. Ann Hematol 2010; 89 Suppl 1:45-6. [PMID: 20411261 PMCID: PMC2900585 DOI: 10.1007/s00277-009-0886-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Accepted: 12/01/2009] [Indexed: 02/03/2023]
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Elzagallaai AA, Rieder MJ, Koren G. The in vitro platelet toxicity assay (iPTA): a novel approach for assessment of drug hypersensitivity syndrome. J Clin Pharmacol 2010; 51:428-35. [PMID: 20400650 DOI: 10.1177/0091270010365554] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Abdelbaset A Elzagallaai
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada N6A 5C1
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