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2′-O-Methyl-5-hydroxymethylcytidine: A Second Oxidative Derivative of 5-Methylcytidine in RNA
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-01-25 , DOI: 10.1021/jacs.6b12180
Sabrina M. Huber 1 , Pieter van Delft 1 , Arun Tanpure 1 , Eric A. Miska 2 , Shankar Balasubramanian 1
Affiliation  

5-Hydroxymethylcytidine (hm5C) was recently identified as a direct metabolite of m5C in RNA. We investigated the stability of hm5C in human cells using bio-isotopologues and LC-MS/HRMS. This has led to the discovery of a second oxidative metabolite of m5C in RNA, namely 2′-O-methyl-5-hydroxymethylcytidine (hm5Cm). Subsequent quantitative analysis of total RNA from higher organisms revealed varying levels and TET-independent formation of this new RNA modification.

中文翻译:

2'-O-Methyl-5-hydroxymethylcytidine:RNA 中 5-Methylcytidine 的第二个氧化衍生物

5-羟甲基胞苷 (hm5C) 最近被鉴定为 RNA 中 m5C 的直接代谢物。我们使用生物同位素体和 LC-MS/HRMS 研究了 hm5C 在人类细胞中的稳定性。这导致在 RNA 中发现了 m5C 的第二种氧化代谢物,即 2'-O-甲基-5-羟甲基胞苷 (hm5Cm)。随后对来自高等生物的总 RNA 的定量分析揭示了这种新 RNA 修饰的不同水平和 TET 独立形成。
更新日期:2017-01-25
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