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    Wyświetlanie 1-3 z 3
    Tytuł:
    Molecular mechanisms of genome expression of coxsackievirus B3 that belongs to enteroviruses
    Autorzy:
    Dutkiewicz, M.
    Swiatkowska, A.
    Ojdowska, A.
    Smolska, B.
    Dymarek-Babs, T.
    Jasinska, A.
    Ciesiolka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/80289.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    enterovirus
    pathogen
    human disease
    viral infection
    coxsackievirus B3
    gene expression
    molecular mechanism
    untranslated region
    viral replication
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2012, 93, 4
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antiviral Activities of Cu2+ Ions in Viral Prevention, Replication, RNA Degradation, and for Antiviral Efficacies of Lytic Virus, ROS-Mediated Virus, Copper Chelation
    Autorzy:
    Ishida, Tsuneo
    Powiązania:
    https://bibliotekanauki.pl/articles/1177808.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Capsid protein
    Copper chelation
    Copper homeostasis
    Copper oxide nanoparticles
    Cu2+ and Cu1+ ions
    DNA/RNA virus
    HSV
    ROS
    Viral replication
    mRNA degradation or decay
    Opis:
    Copper has been known for decades that marked changes of micronutrient homeostasis in the host are accompanied by infection or inflammation. Copper levels in the serum are significantly elevated in response to inflammation that copper accumulates at sites of inflammation. Easily oxidized copper oxide nanoparticles (CuONPs) are widely used as catalysts that the ability of CuONPs to reduce bacterial population and virus application is enhanced. The mechanism of copper-mediated inactivation of herpes simplex virus (HSV) is by which cupric ions oxidatively damage biomolecules. Virus-mediated subjugation and modulation of host lipids during infection that the life cycle of most viruses proceeds through a series of basic steps: binding and internalization, fusion, uncoating, of the viral genome, its replication, assembly of new particles, and budding or release of the newly made viruses. The HIV-1 protein Vpu is an 81-amino-acid (16-kDa) type I which the presence of Vpu leads to the degradation of BST-2 via an endosome-lysosome degradation pathway. Oxidative degradation by a Cu-metalloenzyme, and ubiquitin-mediated degradation of cellular proteins were exploited. Copper can disrupt the lytic cycle of the Coccolithovirus. Lysins represent a novel class of anti-infectives derived from bacteriophage which lysins are bacterial cell wall hydrolytic enzymes that selectively and rapidly kill specific bacteria. Regarding copper induced cellular toxicity, several mechanisms have been proposed based on the formations of ROS by free Cu ions as cupric and cuprous ions can participate in redox reactions. ROS (O2ˉ,･OH, OHˉ), Cu+ and H2O2 play the important roles for viral inactivations. Thujaplicin-copper chelates inhibit influenza virus-induced apoptosis. Pyrrolidine dithiocarbamate as a metal ion binding agent inhibits the activity of the viral proteases of polyprotein processing and RNA replication of HRV. Chelation enables metals are capable of ligand scavenging via complexation, since reverse transcriptase enzyme inhibits the growth and replication of RNA tumor viruses. Thus, copper complex and copper chelation enhance antiviral efficacy.
    Źródło:
    World Scientific News; 2018, 99; 148-168
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Coronaviruses fusion with the membrane and entry to the host cell
    Autorzy:
    Wędrowska, E.
    Wandtke, T.
    Senderek, T.
    Piskorska, E.
    Kopiński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2085559.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    coronavirus
    spike protein
    membrane fusion
    viral entry
    nonstructural proteins
    replication complex
    Opis:
    Introduction. Coronaviruses (CoVs) are positive-strand RNA viruses with the largest genome among all RNA viruses. They are able to infect many host, such as mammals or birds. Whereas CoVs were identified 1930s, they became known again in 2003 as the agents of the Severe Acute Respiratory Syndrome (SARS). The spike protein is thought to be essential in the process of CoVs entry, because it is associated with the binding to the receptor on the host cell. It is also involved in cell tropism and pathogenesis. Receptor recognition is the crucial step in the infection. CoVs are able to bind a variety of receptors, although the selection of receptor remains unclear. Coronaviruses were initially believed to enter cells by fusion with the plasma membrane. Further studies demonstrated that many of them involve endocytosis through clathrin-dependent, caveolae-dependent, clathrin-independent, as well as caveolae-independent mechanisms. Objectives. The aim of this review is to summarise current knowledge about coronaviruses, focussing especially on CoVs entry into the host cell. Advances in understanding coronaviruses replication strategy and the functioning of the replicative structures are also highlighted. The development of host-directed antiviral therapy seems to be a promising way to treat infections with SARS-CoV or other pathogenic coronaviruses. There is still much to be discovered in the inventory of pro-and anti-viral host factors relevant for CoVs replication. The latest pandemic danger, originating from China, has given our previously prepared work even more of topicality.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 2; 175-183
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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