Viral Pathogen Hijacking
Viral Pathogen Hijacking - Related Videos
13:45
Using a Pan-Viral Microarray Assay (Virochip) to Screen Clinical Samples for Viral Pathogens
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Cited by 84 •
2011
The Virochip is a pan-viral microarray designed to simultaneously detect all known viruses as well as novel viruses on the basis of conserved sequence homology. Here we demonstrate how to run a Virochip assay to analyze clinical samples for the presence of both known and unknown viruses.
01:29
Immune Response Against Viral Pathogens
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2024
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses. NK Cells NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
03:17
A Mouse Model to Study the Pathogenic Transition of Streptococcus pneumoniae Following Viral Co-Infection
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2026
Source: Lenhard, A. et al. A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness. J. Vis. Exp. (2022)This video demonstrates a mouse co-infection model in which the influenza virus triggers the transition of Streptococcus pneumoniae from a colonizer to a pathogen. It outlines the steps involved in bacterial colonization, viral infection, and disease progression.
08:32
Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production
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Cited by 2 •
2014
We describe a protocol to measure the antiviral cytokine production in mice infected with a model herpesvirus, murine gamma herpesvirus 68 (γHV68) that is closely-related to human Kaposi’s sarcoma-associated herpesvirus (KSHV) and Epstein-Barr virus (EBV). Utilizing genetically modified mouse strains and mouse embryonic fibroblasts (MEFs), we assessed the antiviral cytokine production both in vivo and ex vivo. “Reconstituting” the expression of innate immune components in knockout embryonic...
10:39
Single Cell Measurements of Vacuolar Rupture Caused by Intracellular Pathogens
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Cited by 22 •
2013
We describe a method for tracking the endomembrane rupture elicited by the intracellular bacteria Shigella flexneri and Mycobacterium tuberculosis upon host cell invasion. Our assay makes use of CCF4, a host cytoplasmic FRET probe in live or fixed cells. This reporter is degraded by an enzyme activity present on the bacterial surface.
FAQs
Viral replication depends on several host resources working together, including ribosomes for viral protein synthesis, enzymes that support genome replication, membranes that organize infection-related processes, and metabolic resources that sustain cellular activity. The virus does not rely on one component alone. Their coordinated redirection helps explain why disrupting a host dependency can interfere with production of new virions.
Viral proteins can alter cellular signaling and suppress antiviral defenses, creating conditions more favorable to infection. These changes complement the redirection of ribosomes, enzymes, membranes, and metabolism: the cell is not only supplying materials, but also losing some protective responses. This dual effect helps connect molecular hijacking with disease mechanisms and pathogenesis.
Coordination matters because genome replication, protein synthesis, assembly, and release are linked stages rather than isolated events. A failure in one stage can limit the ability to complete the next and reduce production of new virions. Examining this sequence helps biologists identify where host dependencies or viral controls may provide opportunities to block replication.
Studying viral pathogen hijacking reveals which host functions viruses depend on and how those dependencies contribute to infection and disease. Researchers can connect the use of cellular machinery with changes in viral replication and pathogenesis. This perspective shifts attention from viral components alone to the host processes that support infection and may be vulnerable to intervention.
Host dependencies provide potential targets for antiviral strategies because viral production requires access to cellular machinery and resources. If an intervention blocks a required replication-supporting process, it may reduce the formation of new virions. Research on these dependencies therefore helps guide drug development by identifying points where replication can be interrupted.
The study of viral pathogen hijacking can support strategies that restore cellular defenses by examining how viral proteins alter signaling and suppress antiviral responses. Understanding those disruptions clarifies why infected cells become more permissive to viral production. It also identifies a complementary intervention goal: limiting replication while helping the cell recover protective functions.