DNA nanotechnology: Difference between revisions

From Food & Medicine Encyclopedia

← Older editNewer edit →
CSV import
CSV import
Line 1: Line 1:
[[File:DNA tetrahedron white.png|thumb]] [[File:Escher Depth.jpg|thumb]] [[File: 3-D seer|thumb]] [[File:Неподвижная структура Холлидея (англ.).svg|thumb]] {{Short description|Field of nanotechnology using DNA molecules as building blocks}}
{{Infobox technology
| name = DNA Nanotechnology
| image = File:DNA_tetrahedron_white.png
| caption = A DNA tetrahedron, a basic structure in DNA nanotechnology.
}}


'''DNA nanotechnology''' is a branch of [[nanotechnology]] that uses the unique molecular recognition properties of [[DNA]] and other nucleic acids to create self-assembling structures with a variety of uses. This field exploits the predictable base-pairing rules of DNA to design and construct complex, nanoscale architectures and devices.
'''DNA nanotechnology''' is a branch of [[nanotechnology]] that uses the unique molecular recognition properties of [[DNA]] and other nucleic acids to create self-assembling structures with a variety of uses. This field exploits the predictable base pairing rules of DNA to design and construct complex, nanoscale architectures.


==Overview==
==History==
DNA nanotechnology involves the design and synthesis of artificial nucleic acid structures for technological uses. The field was pioneered by [[Nadrian Seeman]] in the early 1980s, who proposed using DNA to create a lattice for organizing other molecules. The fundamental principle of DNA nanotechnology is the use of DNA's ability to form double helices through specific base pairing (adenine with thymine, and cytosine with guanine) to create well-defined structures.
The concept of DNA nanotechnology was first proposed by [[Nadrian Seeman]] in the early 1980s. Seeman envisioned using DNA to create a lattice that could organize other molecules in a predictable manner. His pioneering work laid the foundation for the development of this field.


==Structural DNA Nanotechnology==
==Principles==
Structural DNA nanotechnology focuses on creating static structures. These structures can be two-dimensional or three-dimensional and are often used as scaffolds for organizing other molecules. The most common motifs used in structural DNA nanotechnology include:
DNA nanotechnology relies on the specific base pairing of DNA strands, where [[adenine]] pairs with [[thymine]] and [[cytosine]] pairs with [[guanine]]. By designing sequences of DNA, researchers can create strands that will self-assemble into desired structures. These structures can be two-dimensional or three-dimensional, and they can be static or dynamic.


* '''DNA tiles''': These are small, rigid structures that can self-assemble into larger arrays. Examples include the double-crossover (DX) tile and the triple-crossover (TX) tile.
===Structural DNA Nanotechnology===
* '''DNA origami''': This technique involves folding a long single strand of DNA into a desired shape with the help of short "staple" strands. DNA origami can create complex, custom shapes at the nanoscale.
Structural DNA nanotechnology focuses on creating stable, static structures. These include:
* '''DNA polyhedra''': These are three-dimensional structures such as tetrahedra, cubes, and more complex polyhedra, constructed from DNA.


==Dynamic DNA Nanotechnology==
* '''DNA Lattices''': Arrays of DNA that form a repeating pattern, useful for organizing other molecules.
Dynamic DNA nanotechnology involves creating structures that can change their configuration in response to external stimuli. This includes:
* '''DNA Polyhedra''': Three-dimensional shapes such as tetrahedra, cubes, and more complex polyhedra.


* '''DNA walkers''': These are molecular devices that can "walk" along a track made of DNA, powered by chemical reactions.
[[File:Escher_Depth.jpg|thumb|DNA nanostructures can be as intricate as Escher's art.]]
* '''DNA switches and tweezers''': These are devices that can change their conformation in response to specific signals, such as the presence of a particular DNA sequence or a change in environmental conditions.
 
===Dynamic DNA Nanotechnology===
Dynamic DNA nanotechnology involves structures that can change in response to stimuli. This includes:
 
* '''DNA Walkers''': Molecular machines that "walk" along a DNA track.
* '''DNA Origami''': Folding a long single strand of DNA into a desired shape with the help of short "staple" strands.


==Applications==
==Applications==
DNA nanotechnology has a wide range of potential applications, including:
DNA nanotechnology has a wide range of potential applications, including:


* '''Biological and chemical sensing''': DNA nanostructures can be used to detect specific molecules, such as proteins or small molecules, with high sensitivity and specificity.
* '''Medicine''': Targeted drug delivery systems and biosensors.
* '''Drug delivery''': DNA nanostructures can be designed to carry and release therapeutic agents in a controlled manner.
* '''Materials Science''': Creating new materials with unique properties.
* '''Nanofabrication''': DNA can be used as a template for the assembly of other materials, such as metals or semiconductors, to create nanoscale devices.
* '''Computing''': DNA-based computation and data storage.
* '''Computing''': DNA nanotechnology can be used to create molecular circuits and logic gates, enabling computation at the molecular level.


==Challenges and Future Directions==
==Challenges==
Despite its potential, DNA nanotechnology faces several challenges, including the stability of DNA structures in biological environments, the scalability of production, and the integration with existing technologies. Future research is focused on addressing these challenges and expanding the capabilities of DNA nanotechnology.
Despite its potential, DNA nanotechnology faces several challenges, such as:
 
* '''Stability''': Ensuring that DNA structures remain stable under physiological conditions.
* '''Scalability''': Producing DNA nanostructures on a large scale.


==Also see==
==Also see==
* [[Nanotechnology]]
* [[Nanotechnology]]
* [[Molecular self-assembly]]
* [[Molecular self-assembly]]
* [[Nucleic acid structure]]
* [[DNA computing]]
* [[Synthetic biology]]
* [[Synthetic biology]]
* [[Biomolecular engineering]]
 
==References==
* Seeman, N. C. (1982). "Nucleic acid junctions and lattices." Journal of Theoretical Biology, 99(2), 237-247.
* Rothemund, P. W. K. (2006). "Folding DNA to create nanoscale shapes and patterns." Nature, 440(7082), 297-302.
 
==External links==
* [https://www.dna-nanotech.org DNA Nanotechnology Research]


{{Nanotechnology}}
{{Nanotechnology}}

Revision as of 00:50, 10 December 2024


DNA Nanotechnology

A DNA tetrahedron, a basic structure in DNA nanotechnology.


Type
Inventor
Inception
Manufacturer
Available
Discontinued
Website[ Official website]
Related articles


{{This technology related article is a stub.}}


DNA nanotechnology is a branch of nanotechnology that uses the unique molecular recognition properties of DNA and other nucleic acids to create self-assembling structures with a variety of uses. This field exploits the predictable base pairing rules of DNA to design and construct complex, nanoscale architectures.

History

The concept of DNA nanotechnology was first proposed by Nadrian Seeman in the early 1980s. Seeman envisioned using DNA to create a lattice that could organize other molecules in a predictable manner. His pioneering work laid the foundation for the development of this field.

Principles

DNA nanotechnology relies on the specific base pairing of DNA strands, where adenine pairs with thymine and cytosine pairs with guanine. By designing sequences of DNA, researchers can create strands that will self-assemble into desired structures. These structures can be two-dimensional or three-dimensional, and they can be static or dynamic.

Structural DNA Nanotechnology

Structural DNA nanotechnology focuses on creating stable, static structures. These include:

  • DNA Lattices: Arrays of DNA that form a repeating pattern, useful for organizing other molecules.
  • DNA Polyhedra: Three-dimensional shapes such as tetrahedra, cubes, and more complex polyhedra.
File:Escher Depth.jpg
DNA nanostructures can be as intricate as Escher's art.

Dynamic DNA Nanotechnology

Dynamic DNA nanotechnology involves structures that can change in response to stimuli. This includes:

  • DNA Walkers: Molecular machines that "walk" along a DNA track.
  • DNA Origami: Folding a long single strand of DNA into a desired shape with the help of short "staple" strands.

Applications

DNA nanotechnology has a wide range of potential applications, including:

  • Medicine: Targeted drug delivery systems and biosensors.
  • Materials Science: Creating new materials with unique properties.
  • Computing: DNA-based computation and data storage.

Challenges

Despite its potential, DNA nanotechnology faces several challenges, such as:

  • Stability: Ensuring that DNA structures remain stable under physiological conditions.
  • Scalability: Producing DNA nanostructures on a large scale.

Also see

References

  • Seeman, N. C. (1982). "Nucleic acid junctions and lattices." Journal of Theoretical Biology, 99(2), 237-247.
  • Rothemund, P. W. K. (2006). "Folding DNA to create nanoscale shapes and patterns." Nature, 440(7082), 297-302.

External links

Molecular biology
Overview
Engineering
Retrieved from "https://wikimd.org/index.php?title=DNA_nanotechnology&oldid=6032189"