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DNA condensation using cationic dendrimers-morphology and supramolecular structure of formed aggregates

Ainalem, Marie-Louise LU and Nylander, Tommy LU (2011) In Soft Matter 7(10). p.4577-4594
Abstract
The control of DNA condensation, i.e. packaging or compaction, is essential for the living cell, but also important in many applications. One example is gene therapy that often utilises vehicles with the ability to condense DNA and thereby protect DNA against degradation, transport DNA across membranes (which act as barriers towards gene delivery), and regulate gene expression. This review discusses the ability of poly(amido amine) dendrimers to condense DNA molecules via attractive electrostatic interactions, which in turn leads to self-assembled structures with a rich variety of morphologies. The process of condensation is cooperative and kinetically controlled, and the structure of the aggregates strongly depends on the size and charge... (More)
The control of DNA condensation, i.e. packaging or compaction, is essential for the living cell, but also important in many applications. One example is gene therapy that often utilises vehicles with the ability to condense DNA and thereby protect DNA against degradation, transport DNA across membranes (which act as barriers towards gene delivery), and regulate gene expression. This review discusses the ability of poly(amido amine) dendrimers to condense DNA molecules via attractive electrostatic interactions, which in turn leads to self-assembled structures with a rich variety of morphologies. The process of condensation is cooperative and kinetically controlled, and the structure of the aggregates strongly depends on the size and charge of the dendrimer, and the salt concentration of the aqueous solution. While globular aggregates are formed by large dendrimers, rods and toroids are formed by smaller sized dendrimers with lower total charge per molecule. The globular aggregates appear to be disordered, but the smaller dendrimers give rise to high-ordered packing of the DNA in ordered arrays according to a square or hexagonal unit cell. The high-ordered packing also indicates that the dendrimers deform while inducing the DNA to condense. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Soft Matter
volume
7
issue
10
pages
4577 - 4594
publisher
Royal Society of Chemistry
external identifiers
  • wos:000290227400003
  • scopus:79955669096
ISSN
1744-6848
DOI
10.1039/c0sm01171a
language
English
LU publication?
yes
id
4bf22fec-46f9-4204-8df8-3b888a95f506 (old id 1987077)
date added to LUP
2011-06-29 09:42:50
date last changed
2017-11-05 03:55:11
@article{4bf22fec-46f9-4204-8df8-3b888a95f506,
  abstract     = {The control of DNA condensation, i.e. packaging or compaction, is essential for the living cell, but also important in many applications. One example is gene therapy that often utilises vehicles with the ability to condense DNA and thereby protect DNA against degradation, transport DNA across membranes (which act as barriers towards gene delivery), and regulate gene expression. This review discusses the ability of poly(amido amine) dendrimers to condense DNA molecules via attractive electrostatic interactions, which in turn leads to self-assembled structures with a rich variety of morphologies. The process of condensation is cooperative and kinetically controlled, and the structure of the aggregates strongly depends on the size and charge of the dendrimer, and the salt concentration of the aqueous solution. While globular aggregates are formed by large dendrimers, rods and toroids are formed by smaller sized dendrimers with lower total charge per molecule. The globular aggregates appear to be disordered, but the smaller dendrimers give rise to high-ordered packing of the DNA in ordered arrays according to a square or hexagonal unit cell. The high-ordered packing also indicates that the dendrimers deform while inducing the DNA to condense.},
  author       = {Ainalem, Marie-Louise and Nylander, Tommy},
  issn         = {1744-6848},
  language     = {eng},
  number       = {10},
  pages        = {4577--4594},
  publisher    = {Royal Society of Chemistry},
  series       = {Soft Matter},
  title        = {DNA condensation using cationic dendrimers-morphology and supramolecular structure of formed aggregates},
  url          = {http://dx.doi.org/10.1039/c0sm01171a},
  volume       = {7},
  year         = {2011},
}