Infectious Virion Rescue
Infectious Virion Rescue - Related Videos
03:06
Rescue of Infectious Virions from Cells Transfected with Bacterial Artificial Chromosome-Derived Synthetic RNA
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2026
Source: Yun, S. et al. Bacterial Artificial Chromosomes: A Functional Genomics Tool for the Study of Positive-strand RNA Viruses. J. Vis. Exp. (2015)This video demonstrates the recovery of infectious Japanese encephalitis virus from synthetic RNA transcribed from a bacterial artificial chromosome clone. It shows how cells are electroporated with the synthetic RNA, allowing the viral genome to direct the production of new virions. The resulting plaques formed in infected cell monolayers confirm...
07:35
Rescue and Characterization of Recombinant Virus from a New World Zika Virus Infectious Clone
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Cited by 15 •
2017
This protocol describes the recovery of infectious Zika virus from a two-plasmid infectious cDNA clone.
05:53
Recombinant Merkel Cell Polyomavirus (MCPyV) Virion Preparation: A Technique to Produce High-titer Recombinant MCPyV Virion
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2023
In this video, we show the preparation of Merkel cell polyomavirus or MCPyV virions using 273TT cells. This technology helps to produce high-titer of the recombinant MCPyV virions.
03:15
Separation and Enrichment of Extracellular Vesicles in the Presence of Virions
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2026
Source: DeMarino, C., et al. Purification of High Yield Extracellular Vesicle Preparations Away from Virus. J. Vis. Exp. (2019)The video demonstrates the separation of EVs from virions and other contaminants by density gradient centrifugation, followed by capture and concentration with hydrogel nanoparticles. Washed fractions are then ready for downstream identification of those enriched in EVs.
04:46
A Novel Rescue Technique for Difficult Intubation and Difficult Ventilation
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2011
We describe a technique to maintain oxygenation and ventilation using an endotracheal tube inserted nasally to the level of the naso-pharynx while sealing the mouth and nares for successful positive pressure ventilation.
FAQs
The cloned viral genome supplies genetic instructions for producing viral components, while helper components can provide functions that the genome does not supply independently. Permissive cells then support expression, replication, and assembly. Together, these elements connect an engineered genetic template with the production of infectious particles that can be recovered for biological analysis.
Permissive cells provide the biological environment in which introduced viral genetic material can be expressed and replicated. Their role extends beyond simple uptake because they support the progression from genome expression to particle assembly and release. Consequently, cellular compatibility influences whether infectious virions are recovered and which viral properties can be examined.
A cloned viral genome provides a defined starting point for examining the effects of selected sequence changes. When the altered genome produces infectious particles, investigators can relate those changes to viral biology, including replication, host interactions, or disease mechanisms. This controlled design helps connect observed outcomes with the engineered genetic difference.
Successful recovery depends on compatibility among the introduced genome, any required helper components, and the permissive cellular environment. Each element contributes to a different stage: genetic material must be expressed, viral genomes must replicate, and newly formed components must assemble into particles that can be released. A limitation at any stage can prevent infectious recovery.
The workflow begins with a cloned viral genome or complementary DNA and includes its introduction into permissive cells, together with any required helper components. Cellular expression and genome replication are followed by assembly of new particles and their release into the surrounding medium. Recovered virions can then support downstream investigations of viral function and infection.
Recovered particles provide an experimentally generated virus population for examining genome function, replication, host interactions, and disease mechanisms. Because the starting genetic material is cloned, investigators can connect observed behavior to a defined viral sequence rather than an unspecified source. The system therefore supports controlled questions about how viral properties arise and change.
Recovered infectious particles create a basis for evaluating measures that influence infection, including antiviral strategies and vaccines. Investigators can examine how these interventions affect viral behavior or infection-related outcomes in a controlled experimental system. The same approach permits targeted viral mutations, helping connect genetic changes with responses relevant to prevention or treatment.