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Updated: Dec 16, 2025
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Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures
Published on: June 26, 2020
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Supramolecular assembly of DNA-constructed vesicles
Simon Rothenbühler1, Ioan Iacovache2, Simon M Langenegger1
1Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH - 3012 Bern, Switzerland. robert.haener@dcb.unibe.ch.
Nanoscale
|July 3, 2020
Summary
DNA hybrids self-assemble into vesicles, forming sheet-like or columnar structures. Sheet-like DNA vesicles allow for intercalation and light-harvesting complex formation, showcasing nanotechnology potential.
Area of Science:
- Supramolecular Chemistry
- Nanotechnology
- Biophysics
Background:
- Amphiphilic DNA hybrids can self-assemble into complex structures.
- Controlling the self-assembly of DNA nanostructures is crucial for developing functional materials.
Purpose of the Study:
- To demonstrate the self-assembly of DNA hybrids with tetraphenylethylene sticky ends into vesicular architectures.
- To investigate the influence of DNA arrangement on vesicle morphology and functionality.
Main Methods:
- Self-assembly of DNA hybrids in aqueous medium.
- Cryo-electron microscopy for morphological analysis.
- Intercalation and light-harvesting experiments to assess DNA accessibility.
Main Results:
- Formation of different vesicular morphologies (prolate ellipsoids and spheres) from DNA hybrids.
- Observed sheet-like and columnar alignments of DNA hybrids influencing vesicle structure.
- Sheet-like DNA alignment (Type I vesicles) allows for ethidium bromide intercalation and chromophore integration.
- Type I vesicles can be modified into artificial light-harvesting complexes.
Conclusions:
- DNA-hybrid vesicles are versatile nanostructures with tunable properties based on DNA arrangement.
- The accessibility of DNA within vesicles dictates their functional capabilities.
- These DNA-constructed vesicles serve as adaptable platforms for advanced nanotechnology applications.
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