LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 22

Search options

  1. Article ; Online: BSL2-compliant lethal mouse model of SARS-CoV-2 and variants of concern to evaluate therapeutics targeting the Spike protein.

    Manangeeswaran, Mohanraj / Ireland, Derek D C / Thacker, Seth G / Lee, Ha-Na / Kelley-Baker, Logan / Lewkowicz, Aaron P / Rothlauf, Paul W / Cornejo Pontelli, Marjorie / Bloyet, Louis-Marie / Eckhaus, Michael A / Mendoza, Mirian I / Whelan, Sean / Verthelyi, Daniela

    Frontiers in immunology

    2022  Volume 13, Page(s) 919815

    Abstract: Since first reported in 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is rapidly acquiring mutations, particularly in the spike protein, that can modulate pathogenicity, transmission and antibody evasion leading to successive waves ... ...

    Abstract Since first reported in 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is rapidly acquiring mutations, particularly in the spike protein, that can modulate pathogenicity, transmission and antibody evasion leading to successive waves of COVID19 infections despite an unprecedented mass vaccination necessitating continuous adaptation of therapeutics. Small animal models can facilitate understanding host-pathogen interactions, target selection for therapeutic drugs, and vaccine development, but availability and cost of studies in BSL3 facilities hinder progress. To generate a BSL2-compatible
    MeSH term(s) Animals ; COVID-19 ; Disease Models, Animal ; Humans ; Membrane Glycoproteins/metabolism ; Mice ; Receptors, Immunologic ; SARS-CoV-2 ; Spike Glycoprotein, Coronavirus/genetics
    Chemical Substances LILRB4 protein, human ; Membrane Glycoproteins ; Receptors, Immunologic ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2
    Language English
    Publishing date 2022-07-28
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2022.919815
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Neural Infection by Oropouche Virus in Adult Human Brain Slices Induces an Inflammatory and Toxic Response.

    Almeida, Glaucia M / Souza, Juliano P / Mendes, Niele D / Pontelli, Marjorie C / Pinheiro, Nathalia R / Nogueira, Giovanna O / Cardoso, Ricardo S / Paiva, Isadora M / Ferrari, Gustavo D / Veras, Flávio P / Cunha, Fernando Q / Horta-Junior, Jose A C / Alberici, Luciane C / Cunha, Thiago M / Podolsky-Gondim, Guilherme G / Neder, Luciano / Arruda, Eurico / Sebollela, Adriano

    Frontiers in neuroscience

    2021  Volume 15, Page(s) 674576

    Abstract: Oropouche virus (OROV) is an emerging arbovirus in South and Central Americas with high spreading potential. OROV infection has been associated with neurological complications and OROV genomic RNA has been detected in cerebrospinal fluid from patients, ... ...

    Abstract Oropouche virus (OROV) is an emerging arbovirus in South and Central Americas with high spreading potential. OROV infection has been associated with neurological complications and OROV genomic RNA has been detected in cerebrospinal fluid from patients, suggesting its neuroinvasive potential. Motivated by these findings, neurotropism and neuropathogenesis of OROV have been investigated
    Language English
    Publishing date 2021-11-23
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2411902-7
    ISSN 1662-453X ; 1662-4548
    ISSN (online) 1662-453X
    ISSN 1662-4548
    DOI 10.3389/fnins.2021.674576
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Silent Infection of B and CD8

    Castro, Italo A / Jorge, Daniel M M / Ferreri, Lucas M / Martins, Ronaldo B / Pontelli, Marjorie C / Jesus, Bruna L S / Cardoso, Ricardo S / Criado, Miria F / Carenzi, Lucas / Valera, Fabiana C P / Tamashiro, Edwin / Anselmo-Lima, Wilma T / Perez, Daniel R / Arruda, Eurico

    Journal of virology

    2020  Volume 94, Issue 9

    Abstract: Influenza A viruses (IAVs) cause more than 2 million annual episodes of seasonal acute respiratory infections (ARI) and approximately 500,000 deaths worldwide. Depending on virus strain and host immune status, acute infections by IAV may reach sites ... ...

    Abstract Influenza A viruses (IAVs) cause more than 2 million annual episodes of seasonal acute respiratory infections (ARI) and approximately 500,000 deaths worldwide. Depending on virus strain and host immune status, acute infections by IAV may reach sites other than the respiratory tract. In the present study, IAV RNA and antigens were searched for in tissues of palatine tonsils and adenoids removed from patients without ARI symptoms. A real-time reverse transcriptase PCR (RT-PCR) screening revealed that 8 tissue samples from 7 patients out of 103 were positive for IAV. Positive samples were subjected to next-generation sequencing (NGS) and 3 of 8 tissues yielded complete IAV pH1N1 genomes, whereas in 5 samples, the PB1 gene was not fully assembled. Phylogenetic analysis placed tonsil-derived IAV in clusters clearly segregated from contemporaneous Brazilian viruses. Flow cytometry of dispersed tissue fragments and serial immunohistochemistry of paraffin-embedded sections of naturally infected biopsies indicated that CD20
    MeSH term(s) Adenoids/pathology ; Adolescent ; Animals ; B-Lymphocytes/immunology ; CD8-Positive T-Lymphocytes/immunology ; Child ; Child, Preschool ; Cross-Sectional Studies ; Dogs ; Female ; Humans ; Hypertrophy ; Influenza A virus/immunology ; Influenza, Human/immunology ; Influenza, Human/virology ; Madin Darby Canine Kidney Cells ; Male ; Palatine Tonsil/pathology ; Phylogeny ; Prospective Studies ; T-Lymphocytes/pathology ; Tonsillectomy/methods ; Tonsillitis/complications ; Tonsillitis/surgery ; Tonsillitis/virology ; Virus Replication ; Virus Shedding
    Language English
    Publishing date 2020-04-16
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80174-4
    ISSN 1098-5514 ; 0022-538X
    ISSN (online) 1098-5514
    ISSN 0022-538X
    DOI 10.1128/JVI.01969-19
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: High-Dose Convalescent Plasma for Treatment of Severe COVID-19.

    De Santis, Gil C / Oliveira, Luciana Correa / Garibaldi, Pedro M M / Almado, Carlos E L / Croda, Julio / Arcanjo, Ghislaine G A / Oliveira, Érika A F / Tonacio, Adriana C / Langhi, Dante M / Bordin, José O / Gilio, Renato N / Palma, Leonardo C / Santos, Elaine V / Haddad, Simone K / Prado, Benedito P A / Pontelli, Marjorie Cornejo / Gomes, Rogério / Miranda, Carlos H / Auxiliadora Martins, Maria /
    Covas, Dimas T / Arruda, Eurico / Fonseca, Benedito A L / Calado, Rodrigo T

    Emerging infectious diseases

    2022  Volume 28, Issue 3, Page(s) 548–555

    Abstract: To assess whether high-dose coronavirus disease (COVID-19) convalescent plasma (CCP) transfusion may benefit patients with severe COVID-19, we conducted a multicenter randomized trial in Brazil. Patients with severe COVID-19 who were within 10 days of ... ...

    Abstract To assess whether high-dose coronavirus disease (COVID-19) convalescent plasma (CCP) transfusion may benefit patients with severe COVID-19, we conducted a multicenter randomized trial in Brazil. Patients with severe COVID-19 who were within 10 days of initial symptom onset were eligible. Patients in the CCP group received 3 daily doses of CCP (600 mL/d) in addition to standard treatment; control patients received standard treatment only. Primary outcomes were death rates at days 30 and 60 of study randomization. Secondary outcomes were ventilator-free days and hospital-free days. We enrolled 107 patients: 36 CCP and 71 control. At day 30, death rates were 22% for CCP and 25% for the control group; at day 60, rates were 31% for CCP and 35% for control. Needs for invasive mechanical ventilation and durations of hospital stay were similar between groups. We conclude that high-dose CCP transfused within 10 days of symptom onset provided no benefit for patients with severe COVID-19.
    MeSH term(s) COVID-19/therapy ; Humans ; Immunization, Passive/adverse effects ; Plasma ; SARS-CoV-2 ; Treatment Outcome
    Language English
    Publishing date 2022-01-26
    Publishing country United States
    Document type Journal Article ; Multicenter Study ; Randomized Controlled Trial
    ZDB-ID 1380686-5
    ISSN 1080-6059 ; 1080-6040
    ISSN (online) 1080-6059
    ISSN 1080-6040
    DOI 10.3201/eid2803.212299
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: A class II MHC-targeted vaccine elicits immunity against SARS-CoV-2 and its variants.

    Pishesha, Novalia / Harmand, Thibault J / Rothlauf, Paul W / Praest, Patrique / Alexander, Ryan K / van den Doel, Renate / Liebeskind, Mariel J / Vakaki, Maria A / McCaul, Nicholas / Wijne, Charlotte / Verhaar, Elisha / Pinney, William / Heston, Hailey / Bloyet, Louis-Marie / Pontelli, Marjorie Cornejo / Ilagan, Ma Xenia G / Jan Lebbink, Robert / Buchser, William J / Wiertz, Emmanuel J H J /
    Whelan, Sean P J / Ploegh, Hidde L

    Proceedings of the National Academy of Sciences of the United States of America

    2021  Volume 118, Issue 44

    Abstract: The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has resulted in over 100 million infections and millions of deaths. Effective vaccines remain the best hope of curtailing SARS-CoV-2 transmission, morbidity, and ... ...

    Abstract The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has resulted in over 100 million infections and millions of deaths. Effective vaccines remain the best hope of curtailing SARS-CoV-2 transmission, morbidity, and mortality. The vaccines in current use require cold storage and sophisticated manufacturing capacity, which complicates their distribution, especially in less developed countries. We report the development of a candidate SARS-CoV-2 vaccine that is purely protein based and directly targets antigen-presenting cells. It consists of the SARS-CoV-2 Spike receptor-binding domain (Spike
    MeSH term(s) Amino Acid Sequence ; Animals ; Antibodies, Neutralizing/biosynthesis ; Antibodies, Viral/biosynthesis ; Antigen-Presenting Cells/immunology ; CD8-Positive T-Lymphocytes/immunology ; COVID-19/epidemiology ; COVID-19/immunology ; COVID-19/prevention & control ; COVID-19 Vaccines/administration & dosage ; COVID-19 Vaccines/immunology ; COVID-19 Vaccines/pharmacology ; Camelids, New World/immunology ; Female ; Histocompatibility Antigens Class II/immunology ; Humans ; Immunity, Cellular ; Immunity, Humoral ; Immunization, Secondary ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Transgenic ; Pandemics/prevention & control ; Recombinant Fusion Proteins/administration & dosage ; Recombinant Fusion Proteins/genetics ; Recombinant Fusion Proteins/immunology ; SARS-CoV-2/genetics ; SARS-CoV-2/immunology ; Single-Domain Antibodies/administration & dosage ; Single-Domain Antibodies/immunology ; Spike Glycoprotein, Coronavirus/administration & dosage ; Spike Glycoprotein, Coronavirus/genetics ; Spike Glycoprotein, Coronavirus/immunology
    Chemical Substances Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19 Vaccines ; Histocompatibility Antigens Class II ; Recombinant Fusion Proteins ; Single-Domain Antibodies ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2
    Language English
    Publishing date 2021-03-24
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2116147118
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: High-Dose Convalescent Plasma for Treatment of Severe COVID-19

    Gil C. De Santis / Luciana Correa Oliveira / Pedro M.M. Garibaldi / Carlos E.L. Almado / Julio Croda / Ghislaine G.A. Arcanjo / Érika A.F. Oliveira / Adriana C. Tonacio / Dante M. Langhi / José O. Bordin / Renato N. Gilio / Leonardo C. Palma / Elaine V. Santos / Simone K. Haddad / Benedito P.A. Prado / Marjorie Cornejo Pontelli / Rogério Gomes / Carlos H. Miranda / Maria Auxiliadora Martins /
    Dimas T. Covas / Eurico Arruda / Benedito A.L. Fonseca / Rodrigo T. Calado

    Emerging Infectious Diseases, Vol 28, Iss 3, Pp 548-

    2022  Volume 555

    Abstract: To assess whether high-dose coronavirus disease (COVID-19) convalescent plasma (CCP) transfusion may benefit patients with severe COVID-19, we conducted a multicenter randomized trial in Brazil. Patients with severe COVID-19 who were within 10 days of ... ...

    Abstract To assess whether high-dose coronavirus disease (COVID-19) convalescent plasma (CCP) transfusion may benefit patients with severe COVID-19, we conducted a multicenter randomized trial in Brazil. Patients with severe COVID-19 who were within 10 days of initial symptom onset were eligible. Patients in the CCP group received 3 daily doses of CCP (600 mL/d) in addition to standard treatment; control patients received standard treatment only. Primary outcomes were death rates at days 30 and 60 of study randomization. Secondary outcomes were ventilator-free days and hospital-free days. We enrolled 107 patients: 36 CCP and 71 control. At day 30, death rates were 22% for CCP and 25% for the control group; at day 60, rates were 31% for CCP and 35% for control. Needs for invasive mechanical ventilation and durations of hospital stay were similar between groups. We conclude that high-dose CCP transfused within 10 days of symptom onset provided no benefit for patients with severe COVID-19.
    Keywords COVID-19 ; 2019 novel coronavirus disease ; coronavirus disease ; severe acute respiratory syndrome coronavirus 2 ; SARS-CoV-2 ; viruses ; Medicine ; R ; Infectious and parasitic diseases ; RC109-216
    Language English
    Publishing date 2022-03-01T00:00:00Z
    Publisher Centers for Disease Control and Prevention
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article ; Online: Vesicular Stomatitis Virus Chimeras Expressing the Oropouche Virus Glycoproteins Elicit Protective Immune Responses in Mice.

    Stubbs, Sarah Hulsey / Cornejo Pontelli, Marjorie / Mishra, Nischay / Zhou, Changhong / de Paula Souza, Juliano / Mendes Viana, Rosa Maria / Lipkin, W Ian / Knipe, David M / Arruda, Eurico / Whelan, Sean P J

    mBio

    2021  Volume 12, Issue 4, Page(s) e0046321

    Abstract: Oropouche virus (OROV) infection of humans is associated with a debilitating febrile illness that can progress to meningitis or encephalitis. First isolated from a forest worker in Trinidad and Tobago in 1955, the arbovirus OROV has since been detected ... ...

    Abstract Oropouche virus (OROV) infection of humans is associated with a debilitating febrile illness that can progress to meningitis or encephalitis. First isolated from a forest worker in Trinidad and Tobago in 1955, the arbovirus OROV has since been detected throughout the Amazon basin with an estimated 500,000 human infections over 60 years. Like other members of the family
    MeSH term(s) Animals ; Antibodies, Neutralizing ; Bunyaviridae Infections/immunology ; Bunyaviridae Infections/prevention & control ; Genome, Viral ; Male ; Mice ; Mice, Inbred C57BL ; Orthobunyavirus/genetics ; Vesicular Stomatitis/virology ; Vesiculovirus/genetics ; Vesiculovirus/immunology ; Viral Envelope Proteins/genetics ; Virus Replication
    Chemical Substances Antibodies, Neutralizing ; Viral Envelope Proteins
    Language English
    Publishing date 2021-08-03
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2557172-2
    ISSN 2150-7511 ; 2161-2129
    ISSN (online) 2150-7511
    ISSN 2161-2129
    DOI 10.1128/mBio.00463-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: SARS-CoV-2 productively infects primary human immune system cells in vitro and in COVID-19 patients.

    Pontelli, Marjorie C / Castro, Ítalo A / Martins, Ronaldo B / La Serra, Leonardo / Veras, Flávio P / Nascimento, Daniele C / Silva, Camila M / Cardoso, Ricardo S / Rosales, Roberta / Gomes, Rogério / Lima, Thais M / Souza, Juliano P / Vitti, Brenda C / Caetité, Diego B / de Lima, Mikhael H F / Stumpf, Spencer D / Thompson, Cassandra E / Bloyet, Louis-Marie / Toller-Kawahisa, Juliana E /
    Giannini, Marcela C / Bonjorno, Letícia P / Lopes, Maria I F / Batah, Sabrina S / Siyuan, Li / Luppino-Assad, Rodrigo / Almeida, Sergio C L / Oliveira, Fabiola R / Benatti, Maíra N / Pontes, Lorena L F / Santana, Rodrigo C / Vilar, Fernando C / Auxiliadora-Martins, Maria / Shi, Pei-Yong / Cunha, Thiago M / Calado, Rodrigo T / Alves-Filho, José C / Zamboni, Dario S / Fabro, Alexandre T / Louzada-Junior, Paulo / Oliveira, Rene D R / Whelan, Sean P J / Cunha, Fernando Q / Arruda, Eurico

    Journal of molecular cell biology

    2022  Volume 14, Issue 4

    Abstract: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is associated with a hyperinflammatory state and lymphocytopenia, a hallmark that appears as both signature and prognosis of disease severity outcome. Although cytokine storm and ... ...

    Abstract The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is associated with a hyperinflammatory state and lymphocytopenia, a hallmark that appears as both signature and prognosis of disease severity outcome. Although cytokine storm and a sustained inflammatory state are commonly associated with immune cell depletion, it is still unclear whether direct SARS-CoV-2 infection of immune cells could also play a role in this scenario by harboring viral replication. We found that monocytes, as well as both B and T lymphocytes, were susceptible to SARS-CoV-2 infection in vitro, accumulating double-stranded RNA consistent with viral RNA replication and ultimately leading to expressive T cell apoptosis. In addition, flow cytometry and immunofluorescence analysis revealed that SARS-CoV-2 was frequently detected in monocytes and B lymphocytes from coronavirus disease 2019 (COVID-19) patients. The rates of SARS-CoV-2-infected monocytes in peripheral blood mononuclear cells from COVID-19 patients increased over time from symptom onset, with SARS-CoV-2-positive monocytes, B cells, and CD4+ T lymphocytes also detected in postmortem lung tissue. These results indicated that SARS-CoV-2 infection of blood-circulating leukocytes in COVID-19 patients might have important implications for disease pathogenesis and progression, immune dysfunction, and virus spread within the host.
    MeSH term(s) COVID-19 ; Cytokine Release Syndrome ; Humans ; Leukocytes, Mononuclear ; Monocytes ; SARS-CoV-2
    Language English
    Publishing date 2022-04-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2500949-7
    ISSN 1759-4685 ; 1759-4685
    ISSN (online) 1759-4685
    ISSN 1759-4685
    DOI 10.1093/jmcb/mjac021
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Mitochondrial DNA and TLR9 activation contribute to SARS-CoV-2-induced endothelial cell damage.

    Costa, Tiago J / Potje, Simone R / Fraga-Silva, Thais F C / da Silva-Neto, Júlio A / Barros, Paula R / Rodrigues, Daniel / Machado, Mirele R / Martins, Ronaldo B / Santos-Eichler, Rosangela A / Benatti, Maira N / de Sá, Keyla S G / Almado, Carlos Eduardo L / Castro, Ítalo A / Pontelli, Marjorie C / Serra, Leonardo La / Carneiro, Fernando S / Becari, Christiane / Louzada-Junior, Paulo / Oliveira, Rene D R /
    Zamboni, Dario S / Arruda, Eurico / Auxiliadora-Martins, Maria / Giachini, Fernanda R C / Bonato, Vânia L D / Zachara, Natasha E / Bomfim, Gisele F / Tostes, Rita C

    Vascular pharmacology

    2021  Volume 142, Page(s) 106946

    Abstract: Background and purpose: Mitochondria play a central role in the host response to viral infection and immunity, being key to antiviral signaling and exacerbating inflammatory processes. Mitochondria and Toll-like receptor (TLR) have been suggested as ... ...

    Abstract Background and purpose: Mitochondria play a central role in the host response to viral infection and immunity, being key to antiviral signaling and exacerbating inflammatory processes. Mitochondria and Toll-like receptor (TLR) have been suggested as potential targets in SARS-CoV-2 infection. However, the involvement of TLR9 in SARS-Cov-2-induced endothelial dysfunction and potential contribution to cardiovascular complications in COVID-19 have not been demonstrated. This study determined whether infection of endothelial cells by SARS-CoV-2 affects mitochondrial function and induces mitochondrial DNA (mtDNA) release. We also questioned whether TLR9 signaling mediates the inflammatory responses induced by SARS-CoV-2 in endothelial cells.
    Experimental approach: Human umbilical vein endothelial cells (HUVECs) were infected by SARS-CoV-2 and immunofluorescence was used to confirm the infection. Mitochondrial function was analyzed by specific probes and mtDNA levels by real-time polymerase chain reaction (RT-PCR). Inflammatory markers were measured by ELISA, protein expression by western blot, intracellular calcium (Ca
    Key results: SARS-CoV-2 infected HUVECs, which express ACE2 and TMPRSS2 proteins, and promoted mitochondrial dysfunction, i.e. it increased mitochondria-derived superoxide anion, mitochondrial membrane potential, and mtDNA release, leading to activation of TLR9 and NF-kB, and release of cytokines. SARS-CoV-2 also decreased nitric oxide synthase (eNOS) expression and inhibited Ca
    Conclusion and applications: SARS-CoV-2 infection impairs mitochondrial function and activates TLR9 signaling in endothelial cells. TLR9 triggers inflammatory responses that lead to endothelial cell dysfunction, potentially contributing to the severity of symptoms in COVID-19. Targeting mitochondrial metabolic pathways may help to define novel therapeutic strategies for COVID-19.
    MeSH term(s) Animals ; COVID-19 ; DNA, Mitochondrial/genetics ; DNA, Mitochondrial/metabolism ; Endothelial Cells/metabolism ; Humans ; Mice ; Mitochondria/metabolism ; SARS-CoV-2 ; Toll-Like Receptor 9/genetics ; Toll-Like Receptor 9/metabolism
    Chemical Substances DNA, Mitochondrial ; TLR9 protein, human ; Tlr9 protein, mouse ; Toll-Like Receptor 9
    Language English
    Publishing date 2021-11-25
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2082846-9
    ISSN 1879-3649 ; 1537-1891 ; 1879-3649
    ISSN (online) 1879-3649 ; 1537-1891
    ISSN 1879-3649
    DOI 10.1016/j.vph.2021.106946
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: ESCRT machinery components are required for Orthobunyavirus particle production in Golgi compartments.

    Barbosa, Natalia S / Mendonça, Leila R / Dias, Marcos V S / Pontelli, Marjorie C / da Silva, Elaine Z M / Criado, Miria F / da Silva-Januário, Mara E / Schindler, Michael / Jamur, Maria C / Oliver, Constance / Arruda, Eurico / daSilva, Luis L P

    PLoS pathogens

    2018  Volume 14, Issue 5, Page(s) e1007047

    Abstract: Peribunyaviridae is a large family of RNA viruses with several members that cause mild to severe diseases in humans and livestock. Despite their importance in public heath very little is known about the host cell factors hijacked by these viruses to ... ...

    Abstract Peribunyaviridae is a large family of RNA viruses with several members that cause mild to severe diseases in humans and livestock. Despite their importance in public heath very little is known about the host cell factors hijacked by these viruses to support assembly and cell egress. Here we show that assembly of Oropouche virus, a member of the genus Orthobunyavirus that causes a frequent arboviral infection in South America countries, involves budding of virus particles toward the lumen of Golgi cisternae. As viral replication progresses, these Golgi subcompartments become enlarged and physically separated from Golgi stacks, forming Oropouche viral factory (Vfs) units. At the ultrastructural level, these virally modified Golgi cisternae acquire an MVB appearance, and while they lack typical early and late endosome markers, they become enriched in endosomal complex required for transport (ESCRT) proteins that are involved in MVB biogenesis. Further microscopy and viral replication analysis showed that functional ESCRT machinery is required for efficient Vf morphogenesis and production of infectious OROV particles. Taken together, our results indicate that OROV attracts ESCRT machinery components to Golgi cisternae to mediate membrane remodeling events required for viral assembly and budding at these compartments. This represents an unprecedented mechanism of how viruses hijack host cell components for coordinated morphogenesis.
    MeSH term(s) Cell Culture Techniques ; Endosomal Sorting Complexes Required for Transport/metabolism ; Endosomal Sorting Complexes Required for Transport/physiology ; Endosomes/metabolism ; Golgi Apparatus/metabolism ; Golgi Apparatus/virology ; HeLa Cells ; Humans ; Orthobunyavirus/growth & development ; Orthobunyavirus/metabolism ; Orthobunyavirus/pathogenicity ; Orthobunyavirus/physiology ; Virion/metabolism ; Virus Assembly/physiology ; Virus Release/physiology ; Virus Replication/physiology
    Chemical Substances Endosomal Sorting Complexes Required for Transport
    Language English
    Publishing date 2018
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2205412-1
    ISSN 1553-7374 ; 1553-7366
    ISSN (online) 1553-7374
    ISSN 1553-7366
    DOI 10.1371/journal.ppat.1007047
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top