The i-Motif as a Molecular Target: More Than a Complementary DNA Secondary Structure.

The i-Motif as a Molecular Target: More Than a Complementary DNA Secondary Structure.
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DOI:
10.3390/ph14020096
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发表时间:
2021-01-27
期刊:
Pharmaceuticals (Basel, Switzerland)
影响因子:
--
通讯作者:
Kendrick S
Kendrick S
中科院分区:
其他
文献类型:
--
作者:
Brown SL;Kendrick S

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富含胞嘧啶的DNA片段能够采用动态二级结构,即i基序。当在启动子区域内时,i基序具有作为控制基因表达的分子开关的潜力。然而,重复核苷酸序列的基因组区域中的i基序结构可能在促进或阻碍这些DNA元件的扩增中起作用。尽管对互补G-四链体结构后面的i-基序进行了研究,但最近的发现,包括对特定i-基序抗体的鉴定,正在推动这一领域的发展。这一观点回顾了初始和当前的工作特点的i-基序,并提供深入了解这种DNA结构的生物学功能,重点是如何i-基序可以作为一个分子靶点,用于开发新的治疗方法来调节基因表达和重复DNA的延伸。
Stretches of cytosine-rich DNA are capable of adopting a dynamic secondary structure, the i-motif. When within promoter regions, the i-motif has the potential to act as a molecular switch for controlling gene expression. However, i-motif structures in genomic areas of repetitive nucleotide sequences may play a role in facilitating or hindering expansion of these DNA elements. Despite research on the i-motif trailing behind the complementary G-quadruplex structure, recent discoveries including the identification of a specific i-motif antibody are pushing this field forward. This perspective reviews initial and current work characterizing the i-motif and providing insight into the biological function of this DNA structure, with a focus on how the i-motif can serve as a molecular target for developing new therapeutic approaches to modulate gene expression and extension of repetitive DNA.
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