Virus Preservation
Virus Preservation - Related Videos
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.
00:50
What are Viruses?
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2019
Overview A virus is a microscopic infectious particle that consists of an RNA or DNA genome enclosed in a protein shell. It is not able to reproduce on its own: it can only make more viruses by entering a cell and using its cellular machinery. When a virus infects a host cell, it removes its protein coat and directs the host’s machinery to transcribe and translate its genetic material. The hijacked cell assembles the replicated components into thousands of viral progeny, which can rupture and...
08:15
Innovative Strategies for Organ Preservation in Heart Transplantation: Uniform Cooling Preservation and Ex-situ Normothermic Perfusion
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2025
Donor heart preservation is a major determinant of success in heart transplantation. Technological advances have led to optimizing the conditions of preservation, along with a more accurate assessment of the donor heart before transplantation. We herein describe two innovative technologies currently applied for cardiac preservation: uniform cooling preservation and normothermic ex-situ heart perfusion.
03:02
Oncolytic Virus Purification from Infected Mammalian Cells
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2026
Source: Nguyen, H., et al. Growth, Purification, and Titration of Oncolytic Herpes Simplex Virus. J. Vis. Exp. (2021)This video demonstrates the purification of an oncolytic virus from infected mammalian cell cultures using nuclease treatment, sequential centrifugation, membrane filtration, and sucrose cushion centrifugation.
18:10
Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency
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Cited by 40 •
2011
The present article describes the steps required to isolate and characterize RNA polymerase fidelity variants of RNA viruses and how to use mutation frequency data to confirm fidelity changes in tissue culture.
FAQs
Low temperatures slow chemical degradation and help preserve viral structure, reducing loss of infectivity and genetic integrity over time. Deep freezing and liquid-nitrogen storage provide cold-storage options for maintaining biological materials. This stability is important when preserved stocks must support reproducible experiments, diagnostics, vaccine development, or biotechnology work.
Stabilizing media and cryoprotectants help maintain viral materials during storage by reducing structural damage and ice-crystal formation. Their role complements temperature control rather than replacing it. By limiting these sources of injury, they help preserve the activity and quality of stored material for later research, diagnostic, or development work.
Lyophilization, or freeze-drying, can be considered when a virus remains stable under that treatment. It provides an alternative to deep freezing or liquid-nitrogen storage, but it is not appropriate for every viral material. The key consideration is whether the preserved virus retains sufficient infectivity, genetic integrity, and usefulness after this type of storage.
Reliable storage requires suitable containers, controlled temperatures, accurate labeling, and ongoing monitoring. Containers help maintain the stored material, while labeling supports clear identification and monitoring helps detect storage problems. Together, these controls reduce the risk of contamination, mix-ups, and loss of activity, improving the reliability of preserved viral stocks.
Selection should reflect the stability of the virus and the intended use of the preserved material. Deep freezing and liquid-nitrogen storage provide very low-temperature options, whereas lyophilization is suitable only when the virus tolerates freeze-drying. Matching the approach to material stability helps maintain infectivity, genetic integrity, and usefulness for downstream work.
Effective preservation maintains access to biologically important isolates and supports reference stocks, reproducible experiments, diagnostics, vaccine development, and biotechnology. It also contributes to quality assurance by helping stored materials retain consistent biological usefulness. These applications depend on preventing loss of activity and maintaining the integrity of viral stocks during storage.