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Sinha S, Singh K, Ravi Kumar YS, Roy R, Phadnis S, Meena V, Bhattacharyya S, Verma B. Dengue virus pathogenesis and host molecular machineries. J Biomed Sci 2024; 31:43. [PMID: 38649998 PMCID: PMC11036733 DOI: 10.1186/s12929-024-01030-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/14/2024] [Indexed: 04/25/2024] Open
Abstract
Dengue viruses (DENV) are positive-stranded RNA viruses belonging to the Flaviviridae family. DENV is the causative agent of dengue, the most rapidly spreading viral disease transmitted by mosquitoes. Each year, millions of people contract the virus through bites from infected female mosquitoes of the Aedes species. In the majority of individuals, the infection is asymptomatic, and the immune system successfully manages to control virus replication within a few days. Symptomatic individuals may present with a mild fever (Dengue fever or DF) that may or may not progress to a more critical disease termed Dengue hemorrhagic fever (DHF) or the fatal Dengue shock syndrome (DSS). In the absence of a universally accepted prophylactic vaccine or therapeutic drug, treatment is mostly restricted to supportive measures. Similar to many other viruses that induce acute illness, DENV has developed several ways to modulate host metabolism to create an environment conducive to genome replication and the dissemination of viral progeny. To search for new therapeutic options, understanding the underlying host-virus regulatory system involved in various biological processes of the viral life cycle is essential. This review aims to summarize the complex interaction between DENV and the host cellular machinery, comprising regulatory mechanisms at various molecular levels such as epigenetic modulation of the host genome, transcription of host genes, translation of viral and host mRNAs, post-transcriptional regulation of the host transcriptome, post-translational regulation of viral proteins, and pathways involved in protein degradation.
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Affiliation(s)
- Saumya Sinha
- Department of Biotechnology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Kinjal Singh
- Department of Biotechnology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Y S Ravi Kumar
- Department of Biotechnology, M. S. Ramaiah Institute of Technology, MSR Nagar, Bengaluru, India
| | - Riya Roy
- Department of Biotechnology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Sushant Phadnis
- Department of Biotechnology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Varsha Meena
- Department of Biotechnology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Sankar Bhattacharyya
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, India
| | - Bhupendra Verma
- Department of Biotechnology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India.
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Yang ML, Lin CL, Chen YC, Lu IA, Su BH, Chen YH, Liu KT, Wu CL, Shiau AL. Prothymosin α accelerates dengue virus-induced thrombocytopenia. iScience 2024; 27:108422. [PMID: 38213625 PMCID: PMC10783621 DOI: 10.1016/j.isci.2023.108422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/31/2023] [Accepted: 11/07/2023] [Indexed: 01/13/2024] Open
Abstract
Thrombocytopenia is the hallmark finding in dengue virus (DENV) infection. Prothymosin α (ProT) has both intracellular and extracellular functions involved in cell cycle progression, cell differentiation, gene regulation, oxidative stress response, and immunomodulation. In this study, we found that ProT levels were elevated in dengue patient sera as well as DENV-infected megakaryoblasts and their culture supernatants. ProT transgenic mice had reduced platelet counts with prolonged bleeding times. Upon treatment with DENV plus anti-CD41 antibody, they exhibited severe skin hemorrhage. Furthermore, overexpression of ProT suppressed megakaryocyte differentiation. Infection with DENV inhibited miR-126 expression, upregulated DNA (cytosine-5)-methyltransferase 1 (DNMT1), downregulated GATA-1, and increased ProT expression. Upregulation of ProT led to Nrf2 activation and reduced reactive oxygen species production, thereby suppressing megakaryopoiesis. We report the pathophysiological role of ProT in DENV infection and propose an involvement of the miR-126-DNMT1-GATA-1-ProT-Nrf2 signaling axis in DENV-induced thrombocytopenia.
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Affiliation(s)
- Mei-Lin Yang
- Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Ling Lin
- Department of Pediatrics, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Yi-Cheng Chen
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - I-An Lu
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Bing-Hua Su
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yen-Hsu Chen
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Center of Tropical Medicine and Infectious Diseases, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Kuan-Ting Liu
- Department of Emergency Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chao-Liang Wu
- Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ai-Li Shiau
- Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Nunthanasup N, Ketprasit N, Noulsri E, Palasuwan A, Combes V, Kulkeaw K, Palasuwan D. Thrombopoietin-independent generation of platelet-like particles from megakaryoblastic cells. Sci Rep 2023; 13:22553. [PMID: 38110522 PMCID: PMC10728061 DOI: 10.1038/s41598-023-50111-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 12/15/2023] [Indexed: 12/20/2023] Open
Abstract
The use of megakaryoblastic leukemia MEG-01 cells can help reveal the mechanisms of thrombopoiesis. However, conventional in vitro activation of platelet release from MEG-01 cells requires thrombopoietin, which is costly. Here, we aim to develop a more straightforward and affordable method. Synchronization of the MEG-01 cells was initially performed using serum-free culture, followed by spontaneous cell differentiation in the presence of serum. Different stages of megakaryoblast differentiation were classified based on cell morphology, DNA content, and cell cycle. The MEG-01 cells released platelet-like particles at a level comparable to that of the thrombopoietin-activated MEG-01 cells. The platelet-like particles were distinguishable from PLP-derived extracellular vesicles and could express P-selectin following ADP activation. Importantly, the platelet-like particles induced fibrin clotting in vitro using platelet-poor plasma. Therefore, this thrombopoietin-independent cell synchronization method is an effective and straightforward method for studying megakaryopoiesis and thrombopoiesis.
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Affiliation(s)
- Nuntiporn Nunthanasup
- Program in Clinical Hematology Sciences, Department of Clinical Microscopy, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Nutpakal Ketprasit
- Oxidation in Red Cell Disorders Research Unit, Department of Clinical Microscopy, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC, 3052, Australia
| | - Egarit Noulsri
- Research Division, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Attakorn Palasuwan
- Oxidation in Red Cell Disorders Research Unit, Department of Clinical Microscopy, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Valery Combes
- Malaria and Microvesicles Research Group, School of Life Science, Faculty of Science, University of Technology Sydney, Ultimo, Sydney, NSW, 2007, Australia
| | - Kasem Kulkeaw
- Siriraj Integrative Center for Neglected Parasitic Diseases, Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.
| | - Duangdao Palasuwan
- Oxidation in Red Cell Disorders Research Unit, Department of Clinical Microscopy, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand.
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Kumari S, Bandyopadhyay B, Singh A, Aggarwal S, Yadav AK, Vikram NK, Guchhait P, Banerjee A. Extracellular vesicles recovered from plasma of severe dengue patients induce CD4+ T cell suppression through PD-L1/PD-1 interaction. mBio 2023; 14:e0182323. [PMID: 37982662 PMCID: PMC10746246 DOI: 10.1128/mbio.01823-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/09/2023] [Indexed: 11/21/2023] Open
Abstract
IMPORTANCE Severe dengue manifestations caused by the dengue virus are a global health problem. Studies suggest that severe dengue disease depends on uncontrolled immune cell activation, and excessive inflammation adds to the pathogenesis of severe dengue disease. Therefore, it is important to understand the process that triggers the uncontrolled activation of the immune cells. The change in immune response in mild to severe dengue may be due to direct virus-to-cell interaction or it could be a contact-independent process through the extracellular vesicles (EVs) released from infected cells. The importance of circulating EVs in the context of dengue virus infection and pathogenesis remains unexplored. Therefore, understanding the possible biological function of circulating EVs may help to delineate the role of EVs in the progression of disease. Our present study highlights that EVs from plasma of severe dengue patients can have immunosuppressive properties on CD4+ T cells which may contribute to T cell suppression and may contribute to dengue disease progression.
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Affiliation(s)
- Sharda Kumari
- Laboratory of Virology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, India
| | - Bhaswati Bandyopadhyay
- Department of Microbiology, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
| | - Anamika Singh
- Disease Biology Laboratory, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, India
| | - Suruchi Aggarwal
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India
| | - Amit Kumar Yadav
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India
| | - Naval Kishore Vikram
- Department of Infectious Disease & Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Prasenjit Guchhait
- Disease Biology Laboratory, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, India
| | - Arup Banerjee
- Laboratory of Virology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, India
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Fortmann SD, Patton MJ, Frey BF, Tipper JL, Reddy SB, Vieira CP, Hanumanthu VS, Sterrett S, Floyd JL, Prasad R, Zucker JD, Crouse AB, Huls F, Chkheidze R, Li P, Erdmann NB, Harrod KS, Gaggar A, Goepfert PA, Grant MB, Might M. Circulating SARS-CoV-2+ megakaryocytes are associated with severe viral infection in COVID-19. Blood Adv 2023; 7:4200-4214. [PMID: 36920790 PMCID: PMC10022176 DOI: 10.1182/bloodadvances.2022009022] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
Several independent lines of evidence suggest that megakaryocytes are dysfunctional in severe COVID-19. Herein, we characterized peripheral circulating megakaryocytes in a large cohort of inpatients with COVID-19 and correlated the subpopulation frequencies with clinical outcomes. Using peripheral blood, we show that megakaryocytes are increased in the systemic circulation in COVID-19, and we identify and validate S100A8/A9 as a defining marker of megakaryocyte dysfunction. We further reveal a subpopulation of S100A8/A9+ megakaryocytes that contain severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) protein and RNA. Using flow cytometry of peripheral blood and in vitro studies on SARS-CoV-2-infected primary human megakaryocytes, we demonstrate that megakaryocytes can transfer viral antigens to emerging platelets. Mechanistically, we show that SARS-CoV-2-containing megakaryocytes are nuclear factor κB (NF-κB)-activated, via p65 and p52; express the NF-κB-mediated cytokines interleukin-6 (IL-6) and IL-1β; and display high surface expression of Toll-like receptor 2 (TLR2) and TLR4, canonical drivers of NF-κB. In a cohort of 218 inpatients with COVID-19, we correlate frequencies of megakaryocyte subpopulations with clinical outcomes and show that SARS-CoV-2-containing megakaryocytes are a strong risk factor for mortality and multiorgan injury, including respiratory failure, mechanical ventilation, acute kidney injury, thrombotic events, and intensive care unit admission. Furthermore, we show that SARS-CoV-2+ megakaryocytes are present in lung and brain autopsy tissues from deceased donors who had COVID-19. To our knowledge, this study offers the first evidence implicating SARS-CoV-2+ peripheral megakaryocytes in severe disease and suggests that circulating megakaryocytes warrant investigation in inflammatory disorders beyond COVID-19.
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Affiliation(s)
- Seth D. Fortmann
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL
- Department of Ophthalmology, University of Alabama at Birmingham, Birmingham, AL
| | - Michael J. Patton
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL
- Hugh Kaul Precision Medicine Institute, University of Alabama at Birmingham, Birmingham, AL
| | - Blake F. Frey
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL
| | - Jennifer L. Tipper
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Sivani B. Reddy
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL
| | - Cristiano P. Vieira
- Department of Ophthalmology, University of Alabama at Birmingham, Birmingham, AL
| | - Vidya Sagar Hanumanthu
- Division of Clinical Immunology and Rheumatology, Department of Medicine and Microbiology, University of Alabama at Birmingham, Birmingham, AL
| | - Sarah Sterrett
- Division of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Jason L. Floyd
- Department of Ophthalmology, University of Alabama at Birmingham, Birmingham, AL
| | - Ram Prasad
- Department of Ophthalmology, University of Alabama at Birmingham, Birmingham, AL
| | - Jeremy D. Zucker
- Biological Sciences Division, Pacific Northwest National Laboratories, Richland, WA
| | - Andrew B. Crouse
- Hugh Kaul Precision Medicine Institute, University of Alabama at Birmingham, Birmingham, AL
| | - Forest Huls
- Hugh Kaul Precision Medicine Institute, University of Alabama at Birmingham, Birmingham, AL
| | - Rati Chkheidze
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL
| | - Peng Li
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL
| | - Nathaniel B. Erdmann
- Division of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Kevin S. Harrod
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Amit Gaggar
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Paul A. Goepfert
- Division of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Maria B. Grant
- Department of Ophthalmology, University of Alabama at Birmingham, Birmingham, AL
| | - Matthew Might
- Hugh Kaul Precision Medicine Institute, University of Alabama at Birmingham, Birmingham, AL
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Lopardo V, Montella F, Esposito RM, Zannella C, Aliberti SM, Capunzo M, Franci G, Puca AA, Ciaglia E. SARS-CoV-2 Lysate Stimulation Impairs the Release of Platelet-like Particles and Megakaryopoiesis in the MEG-01 Cell Line. Int J Mol Sci 2023; 24:ijms24054723. [PMID: 36902151 PMCID: PMC10003077 DOI: 10.3390/ijms24054723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 03/05/2023] Open
Abstract
SARS-CoV-2 infection causes a considerable inflammatory response coupled with impaired platelet reactivity, which can lead to platelet disorders recognized as negative prognostic factors in COVID-19 patients. The virus may cause thrombocytopenia or thrombocytosis during the different disease stages by destroying or activating platelets and influencing platelet production. While it is known that several viruses can impair megakaryopoiesis by generating an improper production and activation of platelets, the potential involvement of SARS-CoV-2 in affecting megakaryopoiesis is poorly understood. To this purpose, we explored, in vitro, the impact of SARS-CoV-2 stimulation in the MEG-01 cell line, a human megakaryoblastic leukemia cell line, considering its spontaneous capacity of releasing platelet-like particles (PLPs). We interrogated the effect of heat-inactivated SARS-CoV-2 lysate in the release of PLPs and activation from MEG-01, the signaling pathway influenced by SARS-CoV-2, and the functional effect on macrophagic skewing. The results highlight the potential influence of SARS-CoV-2 in the early stages of megakaryopoiesis by enhancing the production and activation of platelets, very likely due to the impairment of STATs signaling and AMPK activity. Overall, these findings provide new insight into the role of SARS-CoV-2 in affecting megakaryocyte-platelet compartment, possibly unlocking another avenue by which SARS-CoV-2 moves.
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Affiliation(s)
- Valentina Lopardo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvatore Allende, 84081 Baronissi, Italy
| | - Francesco Montella
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvatore Allende, 84081 Baronissi, Italy
| | - Roberta Maria Esposito
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvatore Allende, 84081 Baronissi, Italy
| | - Carla Zannella
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Silvana Mirella Aliberti
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvatore Allende, 84081 Baronissi, Italy
| | - Mario Capunzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvatore Allende, 84081 Baronissi, Italy
| | - Gianluigi Franci
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvatore Allende, 84081 Baronissi, Italy
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Annibale Alessandro Puca
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvatore Allende, 84081 Baronissi, Italy
- Cardiovascular Research Unit, IRCCS MultiMedica, 20138 Milan, Italy
- Correspondence: (A.A.P.); (E.C.); Tel.: +39-089965235 (A.A.P.); +39-089965115 (E.C.); Fax: +39-089969602 (A.A.P. & E.C.)
| | - Elena Ciaglia
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvatore Allende, 84081 Baronissi, Italy
- Correspondence: (A.A.P.); (E.C.); Tel.: +39-089965235 (A.A.P.); +39-089965115 (E.C.); Fax: +39-089969602 (A.A.P. & E.C.)
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Losada PX, Bosch I, Frydman GH, Gehrke L, Narváez CF. Dengue and Zika virus differential infection of human megakaryoblast MEG-01 reveals unique cellular markers. Virology 2022; 577:16-23. [PMID: 36257128 DOI: 10.1016/j.virol.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/26/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022]
Abstract
Platelet count is widely used for the diagnosis and follow-up of patients with dengue. Despite its close viral structural and symptomatic homology, ZIKV infection does not typically induce significant thrombocytopenia. To determine the effect of DENV-2 and ZIKV infection on human platelet precursors we utilized MEG-01 cell line to evaluate the viral infection, viability, innate gene expression and release of platelet-like particles (PLPs). DENV-2 induced a higher proportion of cell death at 48-72 h post-infection than ZIKV. The median range of intracellular NS1+/E+ cells was 11.2% (3.3%-25%) and 5% (3%-8.1%) for DENV-2 and ZIKV, respectively (p = 0.03). MEG-01 cells infected with DENV-2 quickly expressed higher levels of IFN-β, indolamine 2,3-dioxygenase and CXCL10 mRNA compared to ZIKV infected cells and DENV-2 but not ZIKV infection reduced the number PLPs from stimulated MEG-01 cells. The results shed light into mechanisms including thrombocytopenia present in patients with DENV but absent in ZIKV infections.
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Affiliation(s)
- Paula X Losada
- División de Inmunología, Programa de Medicina, Facultad de Salud, Universidad Surcolombiana, Neiva, 410001, Huila, Colombia
| | - Irene Bosch
- Institute for Medical Engineering and Science and the Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Galit H Frydman
- Institute for Medical Engineering and Science and the Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA; Department of Surgery, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Lee Gehrke
- Institute for Medical Engineering and Science and the Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA; Department of Microbiology, Harvard Medical School, Boston, MA, 02115, USA
| | - Carlos F Narváez
- División de Inmunología, Programa de Medicina, Facultad de Salud, Universidad Surcolombiana, Neiva, 410001, Huila, Colombia.
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Niranjan R, Murugasamy V, Sunilkumar A, Manoj H, Ganesh K, Vidhyapriya P, Sankari T, Muthukumaravel S, Kumar A. Atorvastatin attenuates NS1 (Non-structural protein-1) of dengue type-2 serotype-induced expressions of matrix metalloproteinases in HL-60 cells, differentiated to neutrophils: Implications for the immunopathogenesis of dengue viral disease. Int Immunopharmacol 2022; 112:109082. [PMID: 36108401 DOI: 10.1016/j.intimp.2022.109082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 07/17/2022] [Accepted: 07/19/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND The dengue is a vector borne viral infection in humans. Bite of mosquito infected with a dengue virus transmits the disease. The neutrophils support more to the innate immune response by switching to infected tissues and triggering immunomodulatory mechanisms including the release of proteases and host defence peptides. METHODS Cell viability by MTT and trypan blue dye exclusion assay, bright field microscopy for assessment of cell morphology, cytokines measurements by ELISA, estimation of protein by Bradford assay were done. Assessments of matrix metalloproteinase genes mRNA expressions were done using real-time PCR. RESULTS In the present study, we have for the first time unveiled that, NS1 antigen of dengue type-2 serotype, induce and stimulate the neutrophils cells to express high levels of matrix metalloproteases. NS1 exposure of HL-60 cells differentiated to neutrophils affected cell morphology and in 24 h of exposure. We have demonstrated that, the NS1 antigen has induced MMP-2, MMP-14 and MMP-9 expressions in neutrophils in a 24hrs exposure time. NS1 exposure has also further upregulated MMP-1, MMP-13, and MMP-8 expressions in neutrophils in a 24hrs exposure time. Notably, treatment with atorvastatin concentrations downregulated the expression profile of the all matrix metalloprotease significantly. Importantly, NS1 antigen has significantly increased the IL-6, IL-13 release by the HL,60 cells which was reversed by atorvastatin. On the other hand, NS1 exposure enhanced the mRNA expressions of VEGF-A and VEGF-D which was reversed by atorvastatin. However, we found that, NS1 exposure reduced the mRNA expressions profile of VEGF-C, which was reversed by atorvastatin. CONCLUSION In conclusion, we report that, neutrophils associated matrix metalloprotease are involved in the pathogenesis of dengue viral disease. VEGF growth factors may also be released by the neutrophils which may subsequently participate in the endothelial dysfunctions leading to dengue shock syndrome.
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Affiliation(s)
- Rituraj Niranjan
- Immunology Laboratory, Division of Microbiology and Immunology, ICMR-Vector Control Research Centre, Puducherry 605006, India.
| | - Vyshali Murugasamy
- Immunology Laboratory, Division of Microbiology and Immunology, ICMR-Vector Control Research Centre, Puducherry 605006, India
| | - Anupama Sunilkumar
- Immunology Laboratory, Division of Microbiology and Immunology, ICMR-Vector Control Research Centre, Puducherry 605006, India
| | - H Manoj
- Immunology Laboratory, Division of Microbiology and Immunology, ICMR-Vector Control Research Centre, Puducherry 605006, India
| | - Khashpatika Ganesh
- Immunology Laboratory, Division of Microbiology and Immunology, ICMR-Vector Control Research Centre, Puducherry 605006, India
| | - Pitchavel Vidhyapriya
- Immunology Laboratory, Division of Microbiology and Immunology, ICMR-Vector Control Research Centre, Puducherry 605006, India
| | - T Sankari
- Division of Omics, ICMR-Vector Control Research Centre, Puducherry 605006, India
| | | | - Ashwani Kumar
- ICMR-Vector Control Research Centre, Puducherry 605006, India
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Losada PX, DeLaura I, Narváez CF. Dengue Virus and Platelets: From the Biology to the Clinic. Viral Immunol 2022; 35:349-358. [PMID: 35483090 DOI: 10.1089/vim.2021.0135] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Dengue is one of the most important vector-borne viral illnesses found in tropical and subtropical regions. Colombia has one of the highest rates of dengue cases in the Americas. Severe dengue virus (DENV) infection presents with capillary leakage, hemorrhage, and organ compromise, eventually leading to death. Over the years, there have been many efforts to develop a vaccine that guarantees protective immunity, but they have been partially successful, as such immunity would need to guarantee protection against four distinct viral serotypes. Absolute platelet count is a laboratory parameter used to monitor the clinical progression of DENV, as infection is often accompanied by thrombocytopenia. Although this finding is well described with respect to the natural history of the disease, there are various hypotheses as to the cause of this rapid decrease, and several in vivo and ex vivo models have been used to explain the effect of DENV infection on platelets and their precursors. DENV infects and activates platelets, facilitating their elimination through recognition by phagocytic cells and peripheral margination. However, infection also affects the precursors in the bone marrow by modulating megakaryopoiesis. The objective of this article is to explore various proposed mechanisms of DENV-induced thrombocytopenia to better understand the pathophysiology and clinical presentations of this highly relevant viral infection.
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Affiliation(s)
- Paula X Losada
- División de Inmunología, Programa de Medicina, Facultad de Salud, Universidad Surcolombiana, Neiva, Huila, Colombia
| | - Isabel DeLaura
- Duke University School of Medicine, Durham, North Carolina, USA
| | - Carlos F Narváez
- División de Inmunología, Programa de Medicina, Facultad de Salud, Universidad Surcolombiana, Neiva, Huila, Colombia
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PAR4-Mediated PI3K/Akt and RhoA/ROCK Signaling Pathways Are Essential for Thrombin-Induced Morphological Changes in MEG-01 Cells. Int J Mol Sci 2022; 23:ijms23020776. [PMID: 35054966 PMCID: PMC8775998 DOI: 10.3390/ijms23020776] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/04/2022] [Accepted: 01/10/2022] [Indexed: 02/05/2023] Open
Abstract
Thrombin stimulates platelets via a dual receptor system of protease-activated receptors (PARs): PAR1 and PAR4. PAR1 activation induces a rapid and transient signal associated with the initiation of platelet aggregation, whereas PAR4 activation results in a prolonged signal, required for later phases, that regulates the stable formation of thrombus. In this study, we observed differential signaling pathways for thrombin-induced PAR1 and PAR4 activation in a human megakaryoblastic leukemia cell line, MEG-01. Interestingly, thrombin induced both calcium signaling and morphological changes in MEG-01 cells via the activation of PAR1 and PAR4, and these intracellular events were very similar to those observed in platelets shown in previous studies. We developed a novel image-based assay to quantitatively measure the morphological changes in living cells, and observed the underlying mechanism for PAR1- and PAR4-mediated morphological changes in MEG-01 cells. Selective inhibition of PAR1 and PAR4 by vorapaxar and BMS-986120, respectively, showed that thrombin-induced morphological changes were primarily mediated by PAR4 activation. Treatment of a set of kinase inhibitors and 2-aminoethoxydiphenyl borate (2-APB) revealed that thrombin-mediated morphological changes were primarily regulated by calcium-independent pathways and PAR4 activation-induced PI3K/Akt and RhoA/ROCK signaling pathways in MEG-01 cells. These results indicate the importance of PAR4-mediated signaling pathways in thrombin-induced morphological changes in MEG-01 cells and provide a useful in vitro cellular model for platelet research.
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Balakrishna Pillai AK, Chu JJH, Mariappan V, JeanPierre AR. Platelets in the pathogenesis of flavivirus disease. Curr Opin Virol 2021; 52:220-228. [PMID: 34968791 DOI: 10.1016/j.coviro.2021.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/16/2021] [Accepted: 12/07/2021] [Indexed: 02/06/2023]
Abstract
Research on the role of platelets in modulating innate and adaptive host immune responses has gaining importance in the last two decades. Since the virus can directly interact with platelet receptors and modulate the host immune response, understanding the role of platelets in viral pathogenesis would pave way for novel therapeutic means. The present review aims at presenting the important molecular aspects of platelet-flavivirus interactions and how it leads to platelet activation, thrombocytopenia, and vascular endothelial leakage. Besides, the role of some of the platelet-derived factors as biomarkers for the early prediction of disease outcome taking dengue infection as an example is reviewed.
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Affiliation(s)
- Agiesh Kumar Balakrishna Pillai
- Central Inter-Disciplinary Research Facility (CIDRF), Sri Balaji Vidyapeeth (Deemed to be University), Puducherry, 607402, India.
| | - Justin Jang Hann Chu
- Laboratory of Molecular RNA Virology and Antiviral Strategies, Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, 117545, Singapore; Infectious Disease Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore; Collaborative and Translation Unit for HFMD, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, 138673, Singapore
| | - Vignesh Mariappan
- Central Inter-Disciplinary Research Facility (CIDRF), Sri Balaji Vidyapeeth (Deemed to be University), Puducherry, 607402, India
| | - Aashika Raagavi JeanPierre
- Central Inter-Disciplinary Research Facility (CIDRF), Sri Balaji Vidyapeeth (Deemed to be University), Puducherry, 607402, India
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Dengue virus induces interferon-β by activating RNA sensing pathways in megakaryocytes. Immunol Lett 2021; 236:31-36. [PMID: 34111476 DOI: 10.1016/j.imlet.2021.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 05/28/2021] [Accepted: 06/03/2021] [Indexed: 11/21/2022]
Abstract
Activation of innate receptors in megakaryocytes (MKs) may affect the ability to produce functional platelets. Low platelet count is one of the clinical manifestations of dengue virus (DENV) infection. In MKs, the effect of innate receptors during DENV-infection is not well studied. Here we used MEG-01 cells to investigate DENV serotype 2 induced innate receptors in these cells. DENV RNA was estimated by qRT-PCR in the culture supernatant. The expression of innate receptors was determined by western blot and qPCR. DENV infection led to increased expression of RIG-I at 24 hrs post-infection (hpi) and MDA-5 at 48 and 72 hpi (p<0.05). However, no change in the expression of TLR3 at protein level was observed. Activation of MDA-5 resulted in increased expression of IFN-β and ISG-15 in DENV infected MEG-01 cells, which was further confirmed by MDA-5 siRNA treatment. Apart from inducing innate receptors, DENV significantly decreases the expression of CD61, an activation marker of megakaryocyteson MEG-01 cells as observed by flow cytometry analysis (p<0.01). Results from this study confirm that DENV infection activates the type-I interferon in megakaryocytes and may play a significant role in maturation and development.
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