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Catching a virus in a molecular net.

L Delalande1, I B Tsvetkova, C Zeng

  • 1Department of Chemistry, Indiana University, Bloomington, IN 47405, USA. itsvetko@indiana.edu dragnea@indiana.edu.

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|July 30, 2016
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Summary

A new molecular net made of tannic acid and iron(iii) coats virus particles, enhancing their stability and resistance to dehydration. This virus engineering strategy enables new applications in challenging environments.

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Area of Science:

  • Materials Science
  • Virology
  • Nanotechnology

Background:

  • Viruses are susceptible to environmental conditions, limiting their study and application.
  • Developing methods to stabilize virus particles is crucial for advanced research and technological uses.

Purpose of the Study:

  • To engineer brome mosaic virus (BMV) particles with a protective metal-organic molecular net.
  • To assess the net's ability to act as a water transport barrier and stabilize the virus.
  • To explore new virus engineering strategies for enhanced stability and applications.

Main Methods:

  • Construction of a metal-organic molecular net using tannic acid (TA) and iron(iii) around BMV particles.
  • Atomic force microscopy (AFM) to study the dehydration resistance of coated and uncoated BMV.
  • Native charge detection mass spectrometry (CDMS) to quantify the molecular net's thickness.

Main Results:

  • Fe(iii)-TA coated BMV exhibited significantly improved resistance to dehydration compared to wild-type BMV (wtBMV).
  • CDMS data indicated the molecular net was less than a single monolayer thick.
  • The thin molecular coat rendered viruses resistant to storage conditions that typically cause disassembly.

Conclusions:

  • A thin metal-organic molecular net effectively stabilizes virus particles against dehydration and disassembly.
  • This virus engineering approach offers a pathway for virus manipulation and application in diverse environments.
  • The stabilized viruses could be useful for therapeutic purposes requiring controlled release or altered storage conditions.