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    Picornaviruses: Molecular Biology of Cellular Hijacking

    17 min
    |
    |
    3 juil. 2026
    ScienceHealthEducation

    Explore the molecular biology of picornaviruses, from common colds to Enterovirus D68. Learn how these RNA viruses hijack host cells to replicate and cause disease.

    Picornaviruses: Molecular Biology of Cellular Hijacking

    Meilleure citation de Picornaviruses: Molecular Biology of Cellular Hijacking

    “

    Picornaviruses are masters of metabolic sabotage, turning a host’s own machinery against itself with such surgical precision that they can shut down global protein synthesis in a matter of hours while simultaneously building massive, custom-made organelles for their own replication.

    ”

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    Question posée

    Advanced molecular pathogenesis and replication of Picornaviruses, specifically focusing on Enterovirus, Rhinovirus, and Human Parechovirus (HPeV). Targeted at a biologist audience, covering viral entry, genome replication, and host cell interactions.

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    Sources de connaissances
    The life cycle of non-polio enteroviruses and how to target it | Nature Reviews Microbiology
    link
    https://preview-www.nature.com/articles/s41579-018-0005-4
    Review Human parechoviruses: Biology, epidemiology and clinical significance
    link
    https://www.sciencedirect.com/science/article/abs/pii/S1386653209001231
    Viral and host proteins involved in picornavirus life cycle
    link
    https://pmc.ncbi.nlm.nih.gov/articles/PMC2785775/
    Fat(al) attraction: Picornaviruses Usurp Lipid Transfer at Membrane Contact Sites to Create Replication Organelles - ScienceDirect
    link
    https://www.sciencedirect.com/science/article/pii/S0966842X16000548
    Enterovirus D68 molecular and cellular biology and pathogenesis
    link
    https://pmc.ncbi.nlm.nih.gov/articles/PMC7949111/
    Frontiers | Enterovirus Replication Organelles and Inhibitors of Their Formation
    link
    https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2020.01817/full

    Foire aux questions

    Picornaviruses are small, nonenveloped, positive-sense RNA viruses that are among the most pervasive pathogens globally. Despite their simple structure of roughly 7,500 nucleotides within a 30-nanometer shell, they are experts at cellular hijacking. They can shut down a host's protein synthesis within hours while building custom organelles for their own replication. This molecular precision allows them to cause a wide range of illnesses, from the common cold to severe gastrointestinal bugs.

    Enterovirus D68 (EV-D68) was previously known for causing mild respiratory symptoms, but it has recently evolved into a more significant threat. It is now considered a primary suspect in cases of acute flaccid myelitis, which is a polio-like paralyzing condition that primarily affects children. This shift has forced researchers to expand their molecular understanding of non-polio enteroviruses as they move beyond the historical focus on poliovirus to address these emerging public health concerns.

    Human Parechoviruses (HPeV) are increasingly recognized as distinct from classic enteroviruses due to their unique genome organization and replication strategies. While they share some characteristics with other picornaviruses, their biological differences are significant enough to require a specialized branch of molecular study. Understanding these distinctions is vital for biologists as these viruses continue to circulate alongside more well-known pathogens like poliovirus and various respiratory RNA viruses.

    Cree par des anciens de Columbia University a San Francisco

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    Points clés

    1

    The Invisible Architects of Human Pathology

    0:00
    2

    Decoding the Geometry of the Viral Capsid

    2:02
    3

    The Molecular Choreography of Viral Entry

    4:16
    4

    Subverting the Host Translation Machinery

    6:19
    5

    Building the Replication Factory

    8:15
    6

    The Lipid High-Wire Act of Viral Replication

    10:00
    7

    Sabotaging the Cellular Defense and Transport

    12:05
    8

    The Path to Egress and the Mystery of Neurotropism

    13:59
    9

    Designing the Playbook Against Picornaviruses

    15:49

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