Irving, Kelly L;
King, Jessica J;
Waller, Zoë AE;
Evans, Cameron W;
Smith, Nicole M;
(2022)
Stability and context of intercalated motifs (i-motifs) for biological applications.
Biochimie
, 198
pp. 33-47.
10.1016/j.biochi.2022.03.001.
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Abstract
DNA is naturally dynamic and can self-assemble into alternative secondary structures including the intercalated motif (i-motif), a four-stranded structure formed in cytosine-rich DNA sequences. Until recently, i-motifs were thought to be unstable in physiological cellular environments. Studies demonstrating their existence in the human genome and role in gene regulation are now shining light on their biological relevance. Herein, we review the effects of epigenetic modifications on i-motif structure and stability, and biological factors that affect i-motif formation within cells. Furthermore, we highlight recent progress in targeting i-motifs with structure-specific ligands for biotechnology and therapeutic purposes.
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