DNA nanotechnology: Difference between revisions

Latest revision as of 06:15, 3 March 2025

DNA Nanotechnology[edit]

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

History[edit]

The concept of DNA nanotechnology was first introduced by Nadrian Seeman in the early 1980s. Seeman proposed using DNA to create a lattice for organizing other molecules, which laid the foundation for the development of this field.

Principles[edit]

DNA nanotechnology relies on the specific base pairing interactions between adenine (A) and thymine (T), and between cytosine (C) and guanine (G). These interactions allow for the precise design of DNA strands that can self-assemble into predetermined structures.

Applications[edit]

DNA nanotechnology has a wide range of applications, including:

**Molecular Computing**: DNA can be used to perform computations by encoding information in the sequence of bases.
**Drug Delivery**: DNA nanostructures can be designed to carry and release therapeutic agents in a controlled manner.
**Biosensing**: DNA-based sensors can detect specific molecules or changes in the environment.
**Structural Biology**: DNA nanostructures can be used to organize proteins and other biomolecules for structural studies.

Techniques[edit]

Some of the key techniques used in DNA nanotechnology include:

**DNA Origami**: A method where a long single strand of DNA is folded into a specific shape with the help of short "staple" strands.
**Tile-based Assembly**: Uses small DNA tiles that can self-assemble into larger structures.
**Hybridization Chain Reaction**: A technique where DNA strands undergo a chain reaction of hybridization to form long chains.

Challenges[edit]

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

**Stability**: DNA structures can be sensitive to environmental conditions such as temperature and pH.
**Scalability**: Creating large and complex structures can be difficult and resource-intensive.
**Cost**: The synthesis of custom DNA sequences can be expensive.

Future Directions[edit]

Research in DNA nanotechnology is ongoing, with efforts focused on improving the stability and scalability of DNA structures, as well as expanding their applications in medicine and materials science.

References[edit]

External Links[edit]

[DNA Nanotechnology at Wikipedia](https://en.wikipedia.org/wiki/DNA_nanotechnology)
[Nadrian Seeman's Research Group](http://seemanlab4.chem.nyu.edu/)

DNA tetrahedron white
Escher Depth

Escher Depth
Неподвижная структура Холлидея (англ.)
Holliday junction coloured
Mao-DX schematic 2
Mao-DXarray schematic small
DX DNA array
DNA nanostructures
Sierpinski Triangle
Rothemund DNA Sierpinski Gasket

@@ 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}}
+== 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 [[nanostructures]]. This field exploits the predictable base pairing rules of DNA to design and construct complex structures at the nanoscale.
-==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 introduced by [[Nadrian Seeman]] in the early 1980s. Seeman proposed using DNA to create a lattice for organizing other molecules, which 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 interactions between [[adenine]] (A) and [[thymine]] (T), and between [[cytosine]] (C) and [[guanine]] (G). These interactions allow for the precise design of DNA strands that can self-assemble into predetermined structures.
-* '''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.
+=== Applications ===
-* '''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.
+DNA nanotechnology has a wide range of applications, including:
-* '''DNA polyhedra''': These are three-dimensional structures such as tetrahedra, cubes, and more complex polyhedra, constructed from DNA.
-==Dynamic DNA Nanotechnology==
+* **Molecular Computing**: DNA can be used to perform computations by encoding information in the sequence of bases.
-Dynamic DNA nanotechnology involves creating structures that can change their configuration in response to external stimuli. This includes:
+* **Drug Delivery**: DNA nanostructures can be designed to carry and release therapeutic agents in a controlled manner.
+* **Biosensing**: DNA-based sensors can detect specific molecules or changes in the environment.
+* **Structural Biology**: DNA nanostructures can be used to organize proteins and other biomolecules for structural studies.
-* '''DNA walkers''': These are molecular devices that can "walk" along a track made of DNA, powered by chemical reactions.
+=== Techniques ===
-* '''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.
+Some of the key techniques used in DNA nanotechnology include:
-==Applications==
+* **DNA Origami**: A method where a long single strand of DNA is folded into a specific shape with the help of short "staple" strands.
-DNA nanotechnology has a wide range of potential applications, including:
+* **Tile-based Assembly**: Uses small DNA tiles that can self-assemble into larger structures.
+* **Hybridization Chain Reaction**: A technique where DNA strands undergo a chain reaction of hybridization to form long chains.
-* '''Biological and chemical sensing''': DNA nanostructures can be used to detect specific molecules, such as proteins or small molecules, with high sensitivity and specificity.
+=== Challenges ===
-* '''Drug delivery''': DNA nanostructures can be designed to carry and release therapeutic agents in a controlled manner.
+Despite its potential, DNA nanotechnology faces several challenges, such as:
-* '''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 nanotechnology can be used to create molecular circuits and logic gates, enabling computation at the molecular level.
-==Challenges and Future Directions==
+* **Stability**: DNA structures can be sensitive to environmental conditions such as temperature and pH.
-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.
+* **Scalability**: Creating large and complex structures can be difficult and resource-intensive.
+* **Cost**: The synthesis of custom DNA sequences can be expensive.
-==Also see==
+=== Future Directions ===
-* [[Nanotechnology]]
+Research in DNA nanotechnology is ongoing, with efforts focused on improving the stability and scalability of DNA structures, as well as expanding their applications in medicine and materials science.
-* [[Molecular self-assembly]]
-* [[Nucleic acid structure]]
+== References ==
-* [[Synthetic biology]]
+<references/>
-* [[Biomolecular engineering]]
+== External Links ==
+* [DNA Nanotechnology at Wikipedia](https://en.wikipedia.org/wiki/DNA_nanotechnology)
+* [Nadrian Seeman's Research Group](http://seemanlab4.chem.nyu.edu/)
 {{Nanotechnology}}
-{{Molecular biology}}
+{{Molecular Biology}}
 [[Category:Nanotechnology]]
-[[Category:Molecular biology]]
+[[Category:Molecular Biology]]
 [[Category:DNA]]
+[[Category:Emerging Technologies]]
+<gallery>
+File:DNA tetrahedron white.png|DNA tetrahedron white
+File:Escher Depth.jpg|Escher Depth
+File:Неподвижная структура Холлидея (англ.).svg|Неподвижная структура Холлидея (англ.)
+File:Holliday junction coloured.png|Holliday junction coloured
+File:Mao-DX-schematic-2.svg|Mao-DX schematic 2
+File:Mao-DXarray-schematic-small.gif|Mao-DXarray schematic small
+File:DX DNA array.png|DX DNA array
+File:DNA nanostructures.png|DNA nanostructures
+File:SierpinskiTriangle.svg|Sierpinski Triangle
+File:Rothemund-DNA-SierpinskiGasket.jpg|Rothemund DNA Sierpinski Gasket
+</gallery>