DNA nanotechnology and DNA origami

Also known as DNA origami, Structural DNA nanotechnology, Nucleic acid nanotechnology

DNA nanotechnology uses the way DNA strands pair up to build tiny shapes and devices. DNA origami folds one long DNA strand into a chosen shape with the help of many short 'staple' strands, and researchers have used the method to make nanoscale patterns and three-dimensional objects.

Research and prototypesDemonstratedReviewed 21 Oct 2026
AI illustration · Illustrative scene, not a photograph of the specific device or experiment.

In plain language

DNA is best known as the chemical code that carries genetic information. Its two strands stick together in a predictable way, with A always pairing with T and C always pairing with G. Researchers have learned to use this pairing as a building tool, designing strands that fold and link together on their own.

In DNA origami, a long strand of DNA is mixed with hundreds of short strands. The short strands pull the long strand into a planned shape, with features measured in nanometres (billionths of a metre). In the 2006 method, each short strand can act as a pixel, so the same long strand can be patterned in different ways. The sources reviewed here describe laboratory and cell-culture work only.

Technical explanation

The original DNA origami method, reported by Rothemund in 2006, uses a roughly 7-kilobase single-stranded DNA scaffold. More than 200 short oligonucleotide staple strands hold the scaffold in place, and the structures assemble in one step when the strands are mixed. The reported structures are about 100 nm across with a spatial resolution of about 6 nm, and the abstract describes patterns or images on the surface.

Douglas and colleagues reported self-assembled three-dimensional DNA shapes in Nature in 2009. Only the title and bibliographic record of that paper were checked, so its method details are not stated here.

In 2012, the Harvard Gazette reported work by Douglas, Bachelet and Church, published in Science, in which DNA latches respond to combinations of cell-surface proteins, including disease markers. The Gazette says the device could potentially seek out specific cell targets within a complex mixture of cell types, and that the team tested it on leukaemia and lymphoma cells. The Science paper itself could not be accessed (the publisher returned HTTP 403), so its details are not stated here.

The sources reviewed do not quantify two main constraints: the cost of synthesising many short strands, and the stability of DNA structures in biological fluids.

What the evidence says

Each statement is typed by the strength of its evidence and linked to the source that supports it.

Demonstrated Shown in a published experiment, test or shipping product.

Rothemund's 2006 method folded a single-stranded DNA scaffold of about 7 kilobases, held in shape by more than 200 short staple strands, into nanoscale 2D shapes about 100 nm across with a spatial resolution of 6 nm.

Sources: [1] · Abstract

Rothemund's paper was published in Nature in March 2006, and its author was affiliated with the California Institute of Technology.

Sources: [1] · Bibliographic record

Reported, unverified Stated by a company or team but not independently confirmed.

Douglas and colleagues' 2009 Nature paper is titled 'Self-assembly of DNA into nanoscale three-dimensional shapes'. Only the title and bibliographic record were checked.

Sources: [2] · Title and bibliographic record · low confidence

The Harvard Gazette, naming Douglas, Bachelet and Church, reports that a DNA nanorobot could potentially seek out specific cell targets within a complex mixture of cell types.

Sources: [3] · Article text · medium confidence

The Harvard Gazette reports that DNA latches can recognise combinations of cell-surface proteins, including disease markers.

Sources: [3] · Article text · medium confidence

Proposed A design or plan that has not yet been built or tested.

The Harvard Gazette describes the 2012 work as lab findings with potential future uses, including treating a variety of diseases, and mentions no animal or patient testing.

Sources: [3] · Article text · medium confidence

Limitations and open problems

  • The demonstrations in the sources reviewed are made in test tubes or in cell cultures; the sources do not report use in patients.
  • The 2012 work, as described by the Harvard Gazette, was tested on leukaemia and lymphoma cells. The Gazette mentions no animal or patient testing.
  • Making many short staple strands at scale and at low cost is not quantified in the sources reviewed here.
  • Stability of DNA structures in blood and tissue is a design concern; the sources reviewed here do not give verified stability figures.

Possible future uses

Speculative

Ideas, not predictions. None of these has been demonstrated.

  • Targeted delivery of drugs or gene-editing components that open only in cells carrying a chosen combination of surface markers.
  • Molecular sensors that change shape when they detect a disease marker, possibly as simple diagnostic devices.
  • Nanoscale templates that place other materials, such as metal particles or proteins, at exact spacings for small electronic or optical devices.

Timeline

  1. Mar 2006Rothemund reports folding DNA into nanoscale 2D shapes and patterns in Nature, using a long scaffold strand and staple strands. Sources: [1]
  2. May 2009Douglas and colleagues report self-assembly of DNA into nanoscale three-dimensional shapes in Nature. Sources: [2]
  3. Feb 2012Work by Douglas, Bachelet and Church, reported by the Harvard Gazette as published in Science, uses DNA latches that respond to combinations of cell-surface proteins. Sources: [3]

Futures this could help bring about

AI illustration
How far away?

Medicines and machines built from folded DNA

Engineering prototypes · 4 of 7 steps done

Glossary

DNA origami
A method that folds one long DNA strand into a chosen shape using many short strands that pair with it in specific places.
Scaffold strand
The long single strand of DNA that forms the backbone of a DNA origami structure.
Staple strand
A short synthetic DNA strand that binds to two or more parts of the scaffold and holds it in shape.

Sources

  1. peer reviewed paper
    Folding DNA to create nanoscale shapes and patterns
    Paul W. K. Rothemund. Nature, 16 Mar 2006. DOI: 10.1038/nature04586. Accessed 21 Oct 2026.
  2. peer reviewed paper
    Self-assembly of DNA into nanoscale three-dimensional shapes
    Shawn M. Douglas, Hendrik Dietz, Tim Liedl et al.. Nature, May 2009. DOI: 10.1038/nature08016. Accessed 21 Oct 2026.
  3. university press release
    Sending DNA robot to do the job
    Twig Mowatt. Harvard Gazette (Wyss Institute communications), 16 Feb 2012. Accessed 21 Oct 2026.

Revision history

3 changes since this profile was created.

Changes on 21 Oct 2026
Published on owner instruction via content loop; AI-researched, QA-checked and link-checkeddb92240
Sources and claims re-checked against originalsfbb434c
Initial profile drafted from primary sources7e66249