Virus Production
Virus Production - Related Videos
10:49
Estimating Virus Production Rates in Aquatic Systems
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Cited by 8 •
2010
The turnover rate of viruses in marine and freshwater systems can be estimated by a reduction and reoccurrence technique. The data allow researchers to infer rates of virus-mediated microbial mortality in aquatic systems.
03:08
Production of Reporter-Containing Ebola Virus Transcription- and Replication-Competent Virus-Like Particles
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2026
Source: Hoenen, T., et al. Modeling The Lifecycle Of Ebola Virus Under Biosafety Level 2 Conditions With Virus-like Particles Containing Tetracistronic Minigenomes. J. Vis. Exp. (2014)This video demonstrates how a tetracistronic minigenome plasmid mimicking the Ebola virus genome is transfected into human cells along with helper plasmids. Inside the cells, viral proteins and luciferase are expressed, leading to the assembly and budding of non-pathogenic, replication-competent virus-like...
04:12
Production and Purification of Recombinant Hepatitis B Virus Particles
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2026
Source: Nishitsuji, H., et al. Development of a Hepatitis B Virus Reporter System to Monitor the Early Stages of the Replication Cycle. J. Vis. Exp. (2017)This video demonstrates the production and purification of recombinant Hepatitis B virus particles, enabling safe, replication-deficient viral preparations for studying early infection events and for high-throughput antiviral drug screening applications.
03:26
Reverse Transcriptase Activity as a Marker for Virus-Like Particle Production
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2026
Source: Scarborough, R. J., et al. Evaluation of the Efficacy And Toxicity of RNAs Targeting HIV-1 Production for Use in Gene or Drug Therapy. J. Vis. Exp. (2016).This video demonstrates a reverse transcriptase (RT) assay to assess the effect of a test RNA on virus-like particle (VLP) production. Cells are co-transfected with plasmids, and RT activity is measured as a quantitative indicator of VLP output. A decrease in RT activity reflects suppression of viral gene expression by the test RNA.
03:41
Production of Virus-like Particles in Engineered E. coli
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2026
Source: Chen, Z., et al. Making Conjugation-induced Fluorescent PEGylated Virus-like Particles by Dibromomaleimide-disulfide Chemistry. J. Vis. Exp. (2018)This video demonstrates the method for the controlled expression of the bacteriophage Qβ coat protein in engineered E. coli. The resulting proteins self-assemble into virus-like particles, which are harvested for downstream bioconjugation.
FAQs
Permissive cells provide the biological environment needed for a virus or its introduced genetic material to support replication and particle assembly. Their suitability determines whether the production system can generate the intended viral material under the selected conditions. In infection research, choosing an appropriate cellular system helps produce preparations that are useful for examining viral replication and host responses.
Replication increases the amount of viral genetic material, whereas particle assembly organizes viral components into viral particles. These processes may occur after introducing either an existing virus or viral genetic material into host cells. Distinguishing the two helps researchers interpret what the system produces and select preparations appropriate for studies of viral activity or immune recognition.
Controlled conditions reduce variation during viral replication or particle assembly and make separately prepared samples more comparable. This consistency matters when investigators measure host-pathogen interactions, evaluate immune responses, or assess antiviral activity. Standardized production also supports more reliable interpretation because observed differences are less likely to arise from uncontrolled variation in the viral preparation itself.
A typical workflow begins by introducing a virus or viral genetic material into permissive cells, followed by incubation under defined conditions that support replication or particle assembly. The resulting material is then harvested and processed before use. Subsequent quality assessment helps determine whether the preparation has the expected identity, concentration, and biological activity for its intended experiment.
Quality assessment focuses on three key properties: identity, concentration, and biological activity. Identity indicates whether the material corresponds to the intended viral preparation, concentration describes how much viral material is present, and biological activity reflects whether it performs the expected function. Together, these measures help researchers select consistent preparations and interpret experimental outcomes with greater confidence.
Standardized viral preparations enable experiments on host-pathogen interactions, viral replication, immune responses, and antiviral activity. They can also provide viral vectors or vaccine antigens for therapeutic and vaccine development, while related preparations support diagnostic research. The same production framework therefore connects basic infection studies with efforts to develop tools for detection, prevention, and treatment.