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Confocal Imaging of Double-Stranded RNA and Pattern Recognition Receptors in Negative-Sense RNA Virus Infection
06:44

Confocal Imaging of Double-Stranded RNA and Pattern Recognition Receptors in Negative-Sense RNA Virus Infection

Published on: January 26, 2019

VIRUS-SPECIFIC DOUBLE-STRANDED RNA IN POLIOVIRUS-INFECTED CELLS

D BALTIMORE, Y BECKER, J E DARNELL

    Science (New York, N.Y.)
    |March 6, 1964
    PubMed

    Insights

    Poliovirus infection in HeLa cells produces a unique, double-stranded viral RNA. This resilient RNA is found associated with virus-specific particles within the cell.

    Area of Science:

    • Virology
    • Molecular Biology
    • Cell Biology

    Background:

    • Poliovirus infection alters cellular processes in host cells like HeLa.
    • Understanding viral RNA replication and structure is crucial for virology.

    Purpose of the Study:

    • To characterize a novel RNA species found in poliovirus-infected HeLa cells.
    • To investigate the properties and cellular localization of this RNA.

    Main Methods:

    • Sedimentation analysis to determine RNA size and characteristics.
    • Ribonuclease digestion assays to assess RNA structure.
    • Isolation of virus-specific particulates for co-localization studies.

    Main Results:

    • A distinct RNA species, slightly faster than 16S, was identified in infected cells.
    • This RNA exhibited lower density than typical viral RNA and resistance to ribonuclease.
    • A significant fraction of this double-stranded RNA was found associated with membranous, virus-specific particulates.

    Conclusions:

    • The identified RNA is a double-stranded form of poliovirus RNA.
    • This double-stranded RNA is closely associated with virus-induced cellular structures.
    • These findings provide insights into poliovirus replication mechanisms and intracellular organization.
    Keywords:
    BIOCHEMISTRYPOLIOVIRUSRNA, VIRAL

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