Pr8 Virus
Pr8 Virus - Related Videos
10:44
Influenza A Virus Studies in a Mouse Model of Infection
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Cited by 38 •
2017
Influenza A viruses (IAVs) are important human respiratory pathogens. To understand the pathogenicity of IAVs and to perform preclinical testing of novel vaccine approaches, animal models mimicking human physiology are required. Here, we describe techniques to evaluate IAV pathogenesis, humoral responses and vaccine efficacy using a mouse model of infection.
02:34
Intranasal Infection of a Mouse with a Pathogenic Influenza Virus
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2026
Source: Wang, M., et al, Evaluation of T Follicular Helper Cells and Germinal Center Response During Influenza A Virus Infection in Mice. J. Vis. Exp. (2020).This video demonstrates intranasal infection of a mouse with a pathogenic influenza virus to establish a respiratory tract infection. The procedure outlines the administration of the virus into the nasal cavity. The virus enters host cells, replicates, and activates the immune system.
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...
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.
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
The eight-segment, negative-sense RNA genome provides the genetic framework for producing viral proteins that coordinate infection and replication in host cells. Studying these segments helps researchers investigate viral genetics and connect particular genetic components with infection-related processes. This organization makes PR8 useful for examining how influenza virus functions at the molecular level.
Hemagglutinin first binds sialic acid receptors on host cells, helping the virus attach to the cell surface. After uptake into an endosome, acidification promotes membrane fusion, allowing viral contents to enter the host cell. These linked steps explain how receptor recognition and intracellular conditions cooperate to initiate infection.
Neuraminidase helps newly formed virions detach and leave infected cells. Its activity complements the earlier attachment and entry function of hemagglutinin, giving the infection cycle distinct stages for investigation. Because release is essential to producing further infectious particles, neuraminidase also provides a relevant focus for studies of influenza biology and antiviral compounds.
PR8 produces reproducible infections in experimental systems, allowing researchers to compare infection-related findings across studies. This consistency supports investigations of disease processes, immune responses, viral genetics, and antiviral activity. Rather than relying only on a single observation, researchers can use the model to examine how different biological questions relate to a controlled influenza infection.
Researchers use PR8 to investigate vaccine development and to evaluate questions involving antiviral compounds. The same experimental strain can also support studies of host immunity, linking viral infection with protective or disease-associated responses. These applications make PR8 relevant both for understanding influenza mechanisms and for exploring strategies intended to prevent or limit infection.
Experiments with PR8 can connect molecular events, such as receptor binding, membrane fusion, and virion release, with larger outcomes in influenza pathogenesis and host immune responses. The strain therefore serves as a bridge between basic viral biology and applied research. Findings can contribute to broader understanding of respiratory virus biology and influenza prevention strategies.