Journal
POLYMERS
Volume 15, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/polym15040858
Keywords
oligonucleotides; triplex; nucleic acids; pH; aptamer; biosensor
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The structure of triple-stranded DNA, consisting of three oligonucleotide chains, is explored. Hoogsteen base pairing is described as a mechanism for forming triple-stranded DNA. The involvement of these structures in various diseases is discussed. The focus of the review is on the development of biomedical oligonucleotides with triple-stranded DNA.
A DNA structure, known as triple-stranded DNA, is made up of three oligonucleotide chains that wind around one another to form a triple helix (TFO). Hoogsteen base pairing describes how triple-stranded DNA may be built at certain conditions by the attachment of the third strand to an RNA, PNA, or DNA, which might all be employed as oligonucleotide chains. In each of these situations, the oligonucleotides can be employed as an anchor, in conjunction with a specific bioactive chemical, or as a messenger that enables switching between transcription and replication through the triplex-forming zone. These data are also considered since various illnesses have been linked to the expansion of triplex-prone sequences. In light of metabolic acidosis and associated symptoms, some consideration is given to the impact of several low-molecular-weight compounds, including pH on triplex production in vivo. The review is focused on the development of biomedical oligonucleotides with triplexes.
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