Virus Inhibition
Virus Inhibition - Related Videos
03:42
Evaluating Virus Spread Inhibition Through microRNA Mimic-Mediated Genome Silencing
0 Views •
2026
Source: Ruiz, A. J. and Russell, S. J. MicroRNA-based Regulation of Picornavirus Tropism. J. Vis. Exp. (2017)This video demonstrates the use of synthetic microRNA mimics to inhibit viral replication in cultured epithelial-like cells selectively. It highlights how microRNA-directed genome silencing can block virus spread and confirm targeting specificity through downstream infectivity analysis.
09:31
Fluorescence-based Neuraminidase Inhibition Assay to Assess the Susceptibility of Influenza Viruses to The Neuraminidase Inhibitor Class of Antivirals
0 Views •
Cited by 56 •
2017
We describe the use of a phenotypic fluorescence-based neuraminidase inhibition assay to assess the susceptibility of influenza A and B viruses to the neuraminidase inhibitor class of antivirals.
03:44
siRNA-Based Inhibition of Autophagy in Herpes Simplex Virus-Infected Immature Dendritic Cells
0 Views •
2025
This video demonstrates a small interfering RNA (siRNA)-based technique to interfere with autophagic flux. A siRNA targeting FIP200 mRNA is introduced into monocyte-derived immature dendritic cells (iDCs) using electroporation, causing the knockdown of FIP200 expression and leading to the inhibition of nuclear lamin disruption via autophagy. Upon adding herpes simplex virus (HSV), the nuclear egress of viral progeny is inhibited due to the absence of lamin disruption via autophagic flux.
00:46
Feedback Inhibition
0 Views •
2019
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell! Since enzymes help control the rate of reactions, their activity is regulated so that appropriate amounts of starting materials, intermediate metabolites, and products are maintained in the cell. Excessive build-up or depletion of...
03:19
An Assay to Measure Influenza Neuraminidase Inhibition Antibody Titers
0 Views •
2025
This video demonstrates an assay measuring influenza neuraminidase (NA) inhibiting antibody titers in a serum sample. A serum sample containing antibodies against NA is added to a fetuin-coated microwell plate. Upon adding the virus, the antibodies prevent viral NA from cleaving fetuin and exposing its galactose moiety. A peroxidase-conjugated lectin is then added, which binds to the exposed galactose. The NA-inhibiting antibody titer is determined using a colorimetric test, where a peroxidase...
FAQs
Targeting a specific stage can prevent different downstream outcomes. An intervention may block attachment or entry before the virus reaches susceptible cells, interfere with genome replication or viral protein production after entry, or disrupt assembly and release later in the infection cycle. Distinguishing these points helps researchers connect reduced viral activity with a particular biological process.
Different inhibitory agents act through different biological routes. Antibodies can be examined alongside small-molecule drugs or host factors, while environmental conditions can also be tested for effects on viral activity. Comparing these categories helps organize possible sources of inhibition and clarifies whether changes in viral activity are associated with a biological factor, a chemical compound, or surrounding conditions.
Measuring inhibition requires attention to what has been reduced: infection, replication, or transmission. A result showing lower viral activity does not, by itself, identify which stage was affected. Linking the measured outcome to the tested compound, antibody, host factor, or environmental condition gives the experiment greater biological meaning and supports more focused investigation of virus-host interactions.
Researchers use a virus inhibition assay by measuring viral activity in the presence of a candidate factor and assessing how much that activity changes. The candidate may be an antibody, small-molecule drug, host factor, or environmental condition. Comparing activity across the tested conditions allows investigators to estimate how effectively each factor reduces viral activity.
These assays provide evidence for antiviral drug development by showing whether a small molecule reduces viral activity. They also support vaccine evaluation when antibody effects are examined, and they can inform infection-control studies by testing conditions associated with reduced viral transmission. The resulting comparisons help prioritize interventions or conditions for further biological investigation.
In biology, virus inhibition studies connect viral processes with interactions between viruses and their hosts. Testing host factors can clarify how host biology affects viral activity, while examining antibodies or small-molecule drugs shows how biological or chemical interventions alter infection. Environmental-condition experiments add another comparison, helping researchers study how context influences viral activity and transmission.