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Related Experiment Videos

Self-assembled virus-membrane complexes.

Lihua Yang1, Hongjun Liang, Thomas E Angelini

  • 1Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 West Green St., Urbana, Illinois 61801, USA.

Nature Materials
|August 18, 2004
PubMed
Summary
This summary is machine-generated.

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Self-assembling polyelectrolytes and membranes form different structures based on charge mismatch. This study used M13 viruses to control structure, enabling applications in gene therapy and nanofabrication.

Area of Science:

  • Materials Science
  • Biomolecular Engineering
  • Nanotechnology

Background:

  • Anionic polyelectrolytes and cationic lipid membranes self-assemble into lamellar and superlattice structures.
  • Structural variations depend on surface-charge-density mismatch between components.

Purpose of the Study:

  • Investigate the relationship between surface-charge-density mismatch and self-assembled structure.
  • Utilize M13 viruses to independently control polyelectrolyte diameter and charge density in virus-membrane complexes.
  • Explore applications of these complexes in molecular organization and fabrication.

Main Methods:

  • Examined complexes between cationic membranes and highly charged M13 viruses.
  • Varied polyelectrolyte diameter independently of charge density.

Related Experiment Videos

  • Used electron-density reconstruction to observe molecular organization within complexes.

    • Main Results:

    • Structural differences in self-assembled layers are explained by surface-charge-density mismatch.
    • Virus-membrane complexes exhibit significantly larger pore sizes than DNA-membrane complexes.
    • Correlated arrays of Ru(bpy)(3)(2+) macroionic dyes were observed within virus-membrane complexes.

    Conclusions:

    • Established fundamental design rules for controlling self-assembled polyelectrolyte-membrane structures.
    • Demonstrated the potential of virus-membrane complexes for packaging large functional molecules.
    • Highlighted applications in non-viral gene therapy and biomolecular templates for nanofabrication.