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Related Experiment Video

Updated: Sep 20, 2025

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

Boosted Productivity in Single-Tile-Based DNA Polyhedra Assembly by Simple Cation Replacement.

Kaixuan Zhou¹, Zhichao Mei¹, Yunxiang Lei¹

¹Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China.

Chembiochem : a European Journal of Chemical Biology

|June 8, 2022

Summary

Replacing magnesium ions with sodium ions enables high-yield DNA polyhedron assembly. This breakthrough allows for large-scale production of DNA nanostructures using lower tile concentrations.

Keywords:

DNA DNA nanostructures DNA nanotechnology self-assembly

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Area of Science:

Biochemistry
Nanotechnology
Materials Science

Background:

Divalent cations like magnesium ions (Mg2+) are crucial for DNA self-assembly.
However, their strong electrostatic shielding can hinder reversible error correction during assembly.
This limitation poses a challenge for large-scale production of DNA nanostructures.

Purpose of the Study:

To investigate the effect of substituting magnesium ions (Mg2+) with monovalent sodium ions (Na+) in DNA self-assembly.
To achieve high-yield, one-pot assembly of tile-based DNA polyhedra.
To overcome limitations in scaling up DNA nanostructure production.

Main Methods:

Substitution of divalent magnesium ions (Mg2+) with monovalent sodium ions (Na+) in the DNA assembly process.
Utilizing coexisting counterions to facilitate the assembly.
Employing tile-based DNA polyhedra construction.

Main Results:

Achieved one-pot, high-yield assembly of tile-based DNA polyhedra.
Enabled assembly at micromolar tile concentrations, at least 10 times higher than previously reported.
Demonstrated a strategy to overcome the obstacle of large-scale production for DNA nanostructures.

Conclusions:

Monovalent sodium ions (Na+) offer an effective alternative to divalent magnesium ions (Mg2+) for DNA self-assembly.
This approach facilitates efficient and scalable production of DNA nanostructures.
The findings pave the way for broader applications of DNA-based nanotechnology.