Virus-specific T Cells
Virus-specific T Cells - Related Videos
20:47
A Technique to Simultaneously Visualize Virus-Specific CD8+ T Cells and Virus-Infected Cells In situ
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Cited by 10 •
2009
A technique combining in situ tetramer staining and in situ hybridization (ISTH) enables visualization, mapping and analysis of the spatial proximity of virus-specific CD8+ T cells to their virus-infected targets, and determination of the quantitative relationships between these immune effectors and targets to infection outcomes.
02:50
Suppressing Hepatitis B Virus Replication Using Viral Antigen-Specific T Cells
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2025
The video demonstrates an assay using human induced pluripotent stem cell (iPSC)-derived CD8+ T cells to inhibit hepatitis B virus (HBV) replication in mice. These T cells, engineered with HBV-specific receptors, are transferred into transgenic mice. Replication-competent HBV genome plasmids are then injected directly into the liver, enabling viral DNA uptake. Once viral antigens are expressed and presented by hybrid MHC-I molecules, the engineered T cells recognize and bind to these complexes.
09:08
Generation and Assembly of Virus-Specific Nucleocapsids of the Respiratory Syncytial Virus
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2021
For in-depth mechanistic analysis of the respiratory syncytial virus (RSV) RNA synthesis, we report a protocol of utilizing the chaperone phosphoprotein (P) for coexpression of the RNA-free nucleoprotein (N0) for subsequent in vitro assembly of the virus-specific nucleocapsids (NCs).
10:01
Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice
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Cited by 5 •
2018
A protocol to evaluate antigen-specific T-cell responses in the immunoprivileged organs of the Ifnar1-/- murine model for the Zika virus (ZIKV) infection is described. This method is pivotal for investigating the cellular mechanisms of the protection and immunopathogenesis of ZIKV vaccines and is also valuable for their efficacy evaluation.
04:09
Monitoring Stage-Specific Gene Expression in Vaccinia Virus Using Fluorescent Reporters
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2026
Source: Rozelle, D. K., et al. Vaccinia Reporter Viruses for Quantifying Viral Function at All Stages of Gene Expression. J. Vis. Exp. (2014)This video demonstrates a method to monitor vaccinia virus replication using fluorescent reporters regulated by stage-specific promoters. Sequential expression of green, red, and blue fluorescent proteins marks the early, intermediate, and late phases of infection, enabling high-throughput analysis of stage-specific viral gene expression.
FAQs
Recognition depends on viral peptide fragments being displayed by major histocompatibility complex molecules. The T-cell receptor detects this combined antigen-presenting signal, allowing a T cell to distinguish cells showing relevant viral material from cells without that signal. This presentation step determines which virus-specific T cells become engaged during an immune response.
CD8+ cells provide a direct cellular defense by eliminating infected cells through cytotoxic mechanisms. CD4+ cells act more coordinatively, releasing cytokines and supporting antibody production. These complementary activities connect removal of infected targets with broader immune organization, so effective antiviral protection depends on more than one T-cell function.
Some virus-specific T cells persist as memory cells after infection or vaccination. When the same virus is encountered again, these cells can respond more rapidly than during the initial exposure. Their persistence provides a cellular basis for lasting immune protection and helps explain why vaccination can prepare the immune system for later encounters.
Analysis of these cells can show whether infection or vaccination has generated a virus-directed cellular response and whether some of that response persists as memory. This information helps researchers evaluate immune protection beyond antibody production alone. It can therefore guide vaccine design and provide a basis for monitoring antiviral immunity over time.
Chronic viral infections create a setting in which understanding virus-specific T-cell responses becomes particularly important. Studying these cells can help characterize the immune response directed at the virus and inform development of antiviral therapies. Their analysis also supports efforts to understand how cellular immunity relates to control of infection over extended periods.
Virus-specific T cells are relevant to virus-associated cancer research because they recognize viral peptide fragments displayed by major histocompatibility complex molecules and can respond to cells presenting those antigens. Their cytotoxic or coordinating activities provide an important immunological context for studying antiviral defenses and developing approaches related to cancers linked with viral infection.