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1.  To DNA, all information is equal 
Artificial DNA, PNA & XNA  2012;3(3):109-111.
Information storage capabilities are key in most aspects of society and the requirement for storage capacity is rapidly expanding. In principle, DNA could be a high-density medium for information storage. Church and coworkers recently demonstrated how binary data can be encoded, stored in, and retrieved from a library of oligonucleotides, increasing by several orders of magnitude the amount and density of manmade information stored in DNA to date. The technology remains in its infancy and important hurdles have yet to be overcome in order to realize its potential. However, DNA may be particularly useful as a storage-medium over long time-scales (centuries), because data-access is compatible with any large-scale DNA-sequencing and -synthesis technology.
doi:10.4161/adna.22671
PMCID: PMC3581509  PMID: 23104084
DNA; information storage in DNA; bit; byte; binary encoding
2.  A DNA nanocapsule with aptamer-controlled open-closure function for targeted delivery 
Artificial DNA, PNA & XNA  2012;3(1):3-4.
A DNA capsule fitted with aptamer controlled target sensing has been “woven” using a 7308-base single-stranded DNA “thread” and 196 staple oligonucleotides. The capsule enables logic-gated molecular cargo delivery to targeted cell surfaces.
doi:10.4161/adna.19843
PMCID: PMC3368814  PMID: 22679527
aptamer; delivery; DNA origami; nanocapsule; nanoscience
3.  RNA-DNA sequence differences spell genetic code ambiguities 
Artificial DNA, PNA & XNA  2011;2(3):69-70.
A recent paper in Science by Li et al. 20111 reports widespread sequence differences in the human transcriptome between RNAs and their encoding genes termed RNA-DNA differences (RDDs). The findings could add a new layer of complexity to gene expression but the study has been criticized. 
PMCID: PMC3324336  PMID: 22567189
gene expression; RNA editing; RNA-DNA differences; transcription; transcriptome
4.  A ribozyme transcribed by a ribozyme 
Artificial DNA, PNA & XNA  2011;2(2):40-42.
Prominent current ideas on how life emerged on Earth include an RNA world hypothesis in which RNA performed informational as well as catalytic functions in the absence of both DNA and protein. Demonstration of a self-replicative system based on ribonucleic acid polymers as both information carriers and catalysts would lend support to such a scenario. A pivotal component of this system would be an RNA dependent RNA polymerase ribozyme capable of replicating its own RNA gene. Recent work from the Holliger group at the Laboratory for Molecular Biology in Cambridge has provided synthetic ribozymes1 that just might foreshadow the future engineering of such self-replicative systems.
doi:10.4161/adna.2.2.16852
PMCID: PMC3166488  PMID: 21912725
ribozyme; RNA dependent RNA polymerase; In vitro evolution; RNA engineering; transcription
5.  Adding mRNA to the list of spatially organized components in bacteria 
Artificial DNA, PNA & XNA  2010;1(2):66-67.
Using LNA in situ hybridization, select mRNAs have been shown to be spatially confined to their chromosomal loci in two distantly related bacterial organisms. Translating ribosomes are diffusion limited by mRNA association.
doi:10.4161/adna.1.2.14150
PMCID: PMC3116576  PMID: 21686240
mRNA spatial distribution; locked nucleic acid (LNA); fluorescence in situ hybridization (FISH)
6.  Mega-cloning and the advent of synthetic genomes 
Artificial DNA, PNA & XNA  2010;1(1):54-57.
Molecular biology owes its prominent role in the biological sciences to the tools of recombinant DNA. While the foundations of recombinant DNA were laid in the 1970s with the discovery of type II restriction endonucleases,1,2 development of robust sequencing technology3 and pioneering work on gene synthesis,4,5 it was not until the turn of the new millennium before the first complete synthetic viral genomes saw the light of day including that of hepatitis C,6 poliovirus,7 and bacteriophage PhiX174.8 Recombinant DNA has come of age as entire cellular genomes are sequenced and stored as digitized information. So what's next? One novel branch of recombinant DNA, referred to as synthetic genomics,9 is occupied with (re)construction of entire cellular genomes from virtual sequence information and using chemical components. Here we look at the most recent developments in such de novo construction. For a broader and more extensive review on genome engineering, the reader is referred to the excellent paper by Carr and Church.10
doi:10.4161/adna.1.1.12935
PMCID: PMC3109442  PMID: 21687527
synthetic genomics; recombinant DNA; genome transplantation; whole-genome assembly; synthetic chromosome

Results 1-6 (6)