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Related Concept Videos

Viruses with RNA Genomes01:29

Viruses with RNA Genomes

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RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
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Subviral Agents01:29

Subviral Agents

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Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
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Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
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Retrovirus Life Cycles01:10

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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
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Related Experiment Video

Updated: Aug 6, 2025

Production of Pseudotyped Particles to Study Highly Pathogenic Coronaviruses in a Biosafety Level 2 Setting
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Pseudotyped Virus for Flaviviridae.

Leiliang Zhang1,2, Xiao Wang2, Annan Ming2

  • 1Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.

Advances in Experimental Medicine and Biology
|March 15, 2023
PubMed
Summary

Pseudotyped viruses, safe alternatives to live Flaviviridae, offer broad applications in studying viral diseases and developing treatments. These virus-like particles enable efficient research on viruses like Hepatitis C and Zika.

Keywords:
DENVFlavivirusHCVJEVPseudovirusZIKV

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Area of Science:

  • Virology
  • Infectious Diseases
  • Molecular Biology

Background:

  • Flaviviridae viruses (hepacivirus, pestivirus, pegivirus, flavivirus) are significant human pathogens.
  • These enveloped RNA viruses cause serious infectious diseases globally.
  • Developing safe and effective research tools is crucial for understanding and combating these viruses.

Purpose of the Study:

  • To highlight the utility of pseudotyped viruses in Flaviviridae research.
  • To emphasize the advantages of pseudotyped viruses over live viruses for safety and efficiency.
  • To showcase the broad applicability of pseudotyped viruses in various research areas.

Main Methods:

  • Construction of artificial virus-like particles (pseudotyped viruses).
  • Utilizing pseudotyped viruses to mimic live virus infection without progeny production.
  • Application of pseudotyped viruses in cell culture systems.

Main Results:

  • Pseudotyped viruses demonstrate a wide host range and high transfection efficiency.
  • These particles offer low biosafety risks and enable accurate quantification.
  • Successful application in studying biological characteristics, drug screening, and vaccine evaluation.

Conclusions:

  • Pseudotyped viruses are valuable tools for Flaviviridae research.
  • Their safety and efficiency make them ideal for studying viruses like Hepatitis C, Japanese encephalitis, Dengue, and Zika.
  • Pseudotyped viruses facilitate advancements in diagnostics and therapeutics for flaviviral infections.