Abstract
Structural polymorphism is an extremely significant phenomenon of nucleic acids, in which DNA and RNA oligonucleotide sequences are able to adapt various canonical, alternative and multistranded structures. These alternative forms of DNA and RNA have an enormous potential of participating in various cellular processes by recognizing ligands such as proteins, drugs and metal ions in a sequence and structure-specific manner. Such DNA-ligand interactions prove to be highly beneficial when exploited for therapeutic purposes. Many of these DNA/ RNA structures recognizing drugs have already proved their potential as anticancer, antibacterial, anthelmintic and antiviral properties. Over the last 2-3 decades, many mechanisms of DNA-drug interactions have been documented, but still many other new mechanisms are being explored. Designing new drugs with improved efficacy and specificity is of prime concern for all researchers which not only deals with the experiments related to synthesizing drugs, but also takes care of searching novel routes or agents for administration or delivery of these therapeutic agents by increasing their nuclear and cellular uptake. This review aims at explaining the structural polymorphs/ multistranded DNA structures and their interactions with pharmaceutical drugs in a structure-specific manner, along with their modes of interactions and biological relevance. This detailed overview of multistranded DNA structures and interacting drugs might further facilitate our understanding about molecular targets and drug development in a more precise manner for the larger benefit of mankind.
Keywords: DNA Triplex, i-motif, G-quadruplex, Multistranded DNA structures, DNA-Drug interactions, G-quadruplex ligands.
Graphical Abstract
Call for Papers in Thematic Issues
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