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Related Concept Videos

Retroviruses02:33

Retroviruses

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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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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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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
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Flavivirus reverse genetic systems, construction techniques and applications: a historical perspective.

Fabien Aubry1, Antoine Nougairède2, Ernest A Gould1

  • 1Aix Marseille Université, IRD French Institute of Research for Development, EHESP French School of Public Health, EPV UMR_D 190 "Emergence des Pathologies Virales", 13385 Marseille, France.

Antiviral Research
|December 17, 2014
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Summary

Reverse genetics systems revolutionized flavivirus research, enabling genome manipulation for disease studies. Advances overcome challenges with infectious clones, improving understanding and control of arbovirus diseases.

Keywords:
FlavivirusInfectious cloneReverse genetics

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Area of Science:

  • Virology
  • Molecular Biology
  • Genetics

Background:

  • Flaviviruses cause significant emerging tropical arbovirus diseases.
  • Reverse genetics systems, first developed in 1989, have transformed flavivirus research.
  • Infectious clone technology is a common but challenging reverse genetics approach.

Purpose of the Study:

  • To review the evolution of flavivirus reverse genetics technologies.
  • To highlight major technical breakthroughs in the field.
  • To discuss applications in understanding and controlling flavivirus diseases.

Main Methods:

  • Review of historical development of reverse genetics systems for flaviviruses.
  • Analysis of technological advancements like PCR and new sequencing methods.
  • Evaluation of strategies to overcome limitations of infectious clone technology.

Main Results:

  • Reverse genetics has enabled direct manipulation of flavivirus genomes.
  • Technological progress has led to improved and novel reverse genetics strategies.
  • These tools are crucial for studying viral biology and pathogenesis.

Conclusions:

  • Reverse genetics has been pivotal in advancing flavivirus research.
  • Ongoing technological innovations continue to enhance these powerful tools.
  • Improved reverse genetics systems are key to controlling flavivirus infections and diseases.