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Related Concept Videos

RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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Reverse Genetics Mediated Recovery of Infectious Murine Norovirus
13:48

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Published on: June 24, 2012

Viral nucleic acid stabilization by RNA extraction reagent.

Jamie A Blow1, Christopher N Mores, Jessie Dyer

  • 1Virology Division, United States Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, MD 21702, USA.

Journal of Virological Methods
|April 5, 2008
PubMed
Summary

Buffer AVL stabilizes viral RNA in field samples, preventing degradation. This method enhances arbovirus detection by ensuring sample integrity during collection, storage, and transport.

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Area of Science:

  • Virology
  • Molecular Biology
  • Public Health

Background:

  • Arbovirus detection relies on intact viral nucleic acids.
  • Field conditions often compromise sample integrity, leading to RNA degradation.
  • Current RNA extraction reagents' pre-extraction stabilization potential is under-assessed.

Purpose of the Study:

  • To evaluate buffer AVL's efficacy in stabilizing viral RNA before extraction.
  • To determine the optimal temperature and duration for buffer AVL-mediated viral stabilization.
  • To assess buffer AVL's combined stabilization and inactivation capabilities.

Main Methods:

  • Viral suspensions (dengue, Venezuelan equine encephalitis, Rift Valley fever) were mixed with buffer AVL.
  • Stabilization was tested at various temperatures (32, 20, 4, and -20 degrees C).
  • RNA integrity was assessed over different time periods at each temperature.

Main Results:

  • Viral RNA remained stable for at least 48 hours at 32 degrees C in buffer AVL.
  • Refrigeration (4 or -20 degrees C) significantly prolonged RNA stabilization, up to 35 days.
  • Buffer AVL demonstrated both viral RNA stabilization and inactivation properties.

Conclusions:

  • Buffer AVL effectively stabilizes viral RNA in field samples, mitigating degradation.
  • This reagent offers a safe and reliable method for collecting and handling potentially infectious arbovirus samples.
  • Utilizing buffer AVL improves the reliability of arbovirus detection in resource-limited settings.