Recent improvements in antigene technology
- PMID: 14644181
- DOI: 10.1016/j.cbpa.2003.10.007
Recent improvements in antigene technology
Abstract
DNA triple-helix-based approaches to control and modulate cellular functions on the level of genomic DNA (antigene technology) suffered in the past from a stepmother-like treatment in comparison to the flourishing field of oligonucleotide-based control of translation (antisense technology). This was mostly due to lack of affinity of triplex-forming oligonucleotides to their DNA target, to sequence restriction constraints imposed by the triple helical recognition motifs and by open questions to the accessibility of the target DNA. Recent developments in the area have brought about new bases that specifically recognize pyrimidine-purine inversion sites as well as sugar modifications, for example, the 2'-aminoethoxy-oligonucleotides or oligonucleotides based on the locked nucleic acid sugar unit, which greatly enhance triplex stability and alleviate in part the sequence restriction constraints. With this, sequence-specific genomic DNA manipulation is starting to become a useful tool in biotechnology.
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