Means, mechanisms and consequences of adenine methylation in DNA.

Means, mechanisms and consequences of adenine methylation in DNA.
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DNA中腺嘌呤甲基化的手段、机制和后果。

DOI:
10.1038/s41576-022-00456-x
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发表时间:
2022-07
期刊:
Nature reviews. Genetics
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N6-甲基-2 ′-脱氧腺苷(6 mA或m6 dA)已被报道存在于从单细胞原生动物和藻类到多细胞植物和哺乳动物的原核生物和真核生物的DNA中。它被认为可以调节DNA结构和转录,跨代传递信息,并在疾病中发挥作用。然而,它在最近进化的真核生物中的存在仍然是一个争论的话题。最近的技术进步促进了6 mA的识别和量化,即使这种修饰非常罕见,但每种方法都有局限性。对现有数据的严格评估,未来研究的严格设计和方法的进一步发展将需要确认6 mA在多细胞真核生物中的存在和生物学功能。
N6-methyl-2′-deoxyadenosine (6mA or m6dA) has been reported in the DNA of prokaryotes and eukaryotes ranging from unicellular protozoa and algae to multicellular plants and mammals. It has been proposed to modulate DNA structure and transcription, transmit information across generations and have a role in disease, among other functions. However, its existence in more recently evolved eukaryotes remains a topic of debate. Recent technological advancements have facilitated the identification and quantification of 6mA even when the modification is exceptionally rare, but each approach has limitations. Critical assessment of existing data, rigorous design of future studies and further development of methods will be required to confirm the presence and biological functions of 6mA in multicellular eukaryotes.
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