3-Methylcytidine
(Synonyms: 3-甲基胞苷) 目录号 : GC65084
3-Methylcytidine 是一种尿核苷，可用作四种不同类型癌症 (肺癌，胃癌，结肠癌和乳腺癌) 的生物标志物。
Cas No.:2140-64-9
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >99.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
3-Methylcytidine, a urinary nucleoside, can be used as a biomarker of four different types of cancer: lung cancer, gastric cancer, colon cancer, and breast cancer[1].
[1]. Hsu WY, et al. Urinary nucleosides as biomarkers of breast, colon, lung, and gastric cancer in Taiwanese. PLoS One. 2013 Dec 19;8(12):e81701.
| Cas No. | 2140-64-9 | SDF | Download SDF |
| 别名 | 3-甲基胞苷 | ||
| 分子式 | C10H15N3O5 | 分子量 | 257.24 |
| 溶解度 | Water : 90 mg/mL (349.87 mM; Need ultrasonic)|DMSO : 83.33 mg/mL (323.94 mM; Need ultrasonic) | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 3.8874 mL | 19.4371 mL | 38.8742 mL |
| 5 mM | 0.7775 mL | 3.8874 mL | 7.7748 mL |
| 10 mM | 0.3887 mL | 1.9437 mL | 3.8874 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Roles and dynamics of 3-Methylcytidine in cellular RNAs
Trends Biochem Sci 2022 Jul;47(7):596-608.PMID:35365384DOI:10.1016/j.tibs.2022.03.004.
Modified nucleotides within cellular RNAs significantly influence their biogenesis, stability, and function. As reviewed here, 3-Methylcytidine (m3C) has recently come to the fore through the identification of the methyltransferases responsible for installing m3C32 in human tRNAs. Mechanistic details of how m3C32 methyltransferases recognize their substrate tRNAs have been uncovered and the biogenetic and functional relevance of interconnections between m3C32 and modified adenosines at position 37 highlighted. Functional insights into the role of m3C32 modifications indicate that they influence tRNA structure and, consistently, lack of m3C32 modifications impairs translation. Development of quantitative, transcriptome-wide m3C mapping approaches and the discovery of an m3C demethylase reveal m3C to be dynamic, raising the possibility that it contributes to fine-tuning gene expression in different conditions.
Synthesis of N 4-acetylated 3-Methylcytidine phosphoramidites for RNA solid-phase synthesis
Monatsh Chem 2022;153(3):285-291.PMID:35400759DOI:10.1007/s00706-022-02896-x.
The growing interest in 3-Methylcytidine (m3C) originates from the recent discoveries of m3C modified tRNAs in humans as well as its intensively debated occurrence in mRNA. Moreover, m3C formation can be catalyzed by RNA without the assistance of proteins as has been demonstrated for a naturally occurring riboswitch fold using the methylated form of its cognate ligand as cofactor. Additionally, new RNA sequencing methods have been developed to detect this modification in transcriptome-wide manner. For all these reasons, an increasing demand for synthetic m3C containing oligoribonucleotides is emerging. Their chemical synthesis relies on RNA solid-phase synthesis using phosphoramidite building blocks. Here, we describe a facile synthetic path towards N4-acetylated 2'-O-TBDMS- and 2'-O-TOM m3C phosphoramidites to provide an optimal toolbox for solid-phase synthesis of m3C containing RNA. Supplementary information: The online version contains supplementary material available at 10.1007/s00706-022-02896-x.
Three distinct 3-Methylcytidine (m3C) methyltransferases modify tRNA and mRNA in mice and humans
J Biol Chem 2017 Sep 1;292(35):14695-14703.PMID:28655767DOI:10.1074/jbc.M117.798298.
Chemical RNA modifications are central features of epitranscriptomics, highlighted by the discovery of modified ribonucleosides in mRNA and exemplified by the critical roles of RNA modifications in normal physiology and disease. Despite a resurgent interest in these modifications, the biochemistry of 3-Methylcytidine (m3C) formation in mammalian RNAs is still poorly understood. However, the recent discovery of trm141 as the second gene responsible for m3C presence in RNA in fission yeast raises the possibility that multiple enzymes are involved in m3C formation in mammals as well. Here, we report the discovery and characterization of three distinct m3C-contributing enzymes in mice and humans. We found that methyltransferase-like (METTL) 2 and 6 contribute m3C in specific tRNAs and that METTL8 only contributes m3C to mRNA. MS analysis revealed that there is an ∼30-40% and ∼10-15% reduction, respectively, in METTL2 and -6 null-mutant cells, of m3C in total tRNA, and primer extension analysis located METTL2-modified m3C at position 32 of tRNAThr isoacceptors and tRNAArg(CCU) We also noted that METTL6 interacts with seryl-tRNA synthetase in an RNA-dependent manner, suggesting a role for METTL6 in modifying serine tRNA isoacceptors. METTL8, however, modified only mRNA, as determined by biochemical and genetic analyses in Mettl8 null-mutant mice and two human METTL8 mutant cell lines. Our findings provide the first evidence of the existence of m3C modification in mRNA, and the discovery of METTL8 as an mRNA m3C writer enzyme opens the door to future studies of other m3C epitranscriptomic reader and eraser functions.
Transfer RNA demethylase ALKBH3 promotes cancer progression via induction of tRNA-derived small RNAs
Nucleic Acids Res 2019 Mar 18;47(5):2533-2545.PMID:30541109DOI:10.1093/nar/gky1250.
Transfer RNA is heavily modified and plays a central role in protein synthesis and cellular functions. Here we demonstrate that ALKBH3 is a 1-methyladenosine (m1A) and 3-Methylcytidine (m3C) demethylase of tRNA. ALKBH3 can promote cancer cell proliferation, migration and invasion. In vivo study confirms the regulation effects of ALKBH3 on growth of tumor xenograft. The m1A demethylated tRNA is more sensitive to angiogenin (ANG) cleavage, followed by generating tRNA-derived small RNAs (tDRs) around the anticodon regions. tDRs are conserved among species, which strengthen the ribosome assembly and prevent apoptosis triggered by cytochrome c (Cyt c). Our discovery opens a potential and novel paradigm of tRNA demethylase, which regulates biological functions via generation of tDRs.
Mapping of 7-methylguanosine (m7G), 3-Methylcytidine (m3C), dihydrouridine (D) and 5-hydroxycytidine (ho5C) RNA modifications by AlkAniline-Seq
Methods Enzymol 2021;658:25-47.PMID:34517949DOI:10.1016/bs.mie.2021.06.001.
Precise and reliable mapping of modified nucleotides in RNA is a challenging task in epitranscriptomics analysis. Only deep sequencing-based methods are able to provide both, a single-nucleotide resolution and sufficient selectivity and sensitivity. A number of protocols employing specific chemical reagents to distinguish modified RNA nucleotides from canonical parental residues have already proven their performance. We developed a deep-sequencing analytical pipeline for simultaneous detection of several modified nucleotides of different nature (methylation, hydroxylation, reduction) in RNA. The AlkAniline-Seq protocol uses intrinsic fragility of the N-glycosidic bond present in certain modified residues (7-methylguanosine (m7G), 3-Methylcytidine (m3C), dihydrouridine (D) and 5-hydroxycytidine (ho5C)) to induce cleavage under heat combined with alkaline conditions. The resulting RNA abasic site is decomposed by aniline-driven β-elimination and creates a 5'-phosphate (5'-P) at the adjacent N+1 residue. This 5'-P is the crucial entry point for a highly selective ligation of sequencing adapters during the subsequent Illumina library preparation protocol. AlkAniline-Seq protocol has a very low background, and is both highly sensitive and specific. Applications of AlkAniline-Seq include mapping of m7G, m3C, D, and ho5C in variety of cellular RNAs, including in particular rRNAs and tRNAs.