DNA重亚硫酸盐转化试剂盒 EpiSight™ Bisulfite Conversion Kit Ver.2

  • 产品特性
  • 相关资料
  • Q&A
  • 参考文献

EpiSightTM Bisulfite Conversion Kit Ver.2DNA重亚硫酸盐转化试剂盒                              EpiSight™ Bisulfite Conversion Kit Ver.2

DNA 重亚硫酸盐转化试剂盒

 


  Enhanced Bisulfite Reaction 抑制因亚硫酸氢钠反应的 DNA 分解,扩增长链长度。

  通过添加专利产品 Bisulfite 溶液和反应促进剂(Enhancer),能抑制模板 DNA 的分解,能让胞嘧啶转化为尿嘧啶的效率大幅度上升。使用离心柱能使 DNA 纯化操作更加简便。

  结合专用的 Taq DNA Polymerase,即使是亚硫酸氢钠反应后,PCR 扩增比较困难的碱基序列也能稳定且高效地扩增。

 


◆特点


● 离心柱操作简单

● 专利的 Enhancer 抑制 DNA 分解

● 有效扩增富含 CpG 的序列

● 热启动聚合酶防止非特异性扩增


有以下需求的可以考虑使用本产品

● 扩增长链进行高效分析

● 非甲基化胞嘧啶不转换为尿嘧啶的情况

● 甲基化胞嘧啶转换为尿嘧啶的情况

● 想提高 PCR 扩增效率

 


试剂盒内容(kit 内容)


EpiSightTM Bisulfite Conversion Kit Ver.2(20次)

 

Bisulfite solution

11.8 mL×1

Enhancer

100 µL×1

吸附缓冲液

10 mL×1

洗涤液

4.8 mL×1

Desulfonation buffer(脱磺缓冲液)

1 mL×1

洗脱缓冲液

500 µL×1

离心柱

20个

 

 

EpiSightTMBisulTaqTM DNA Polymerase,recombinant,Solution Ver.2(20次)

 

BisulTaqTM DNA Polymerase,recombinant,Solution   Ver.2

10 µL×1

10×反应缓冲液

100 µL×1

dNTPs溶液(各 2 mmol/L)

100 µL×1

 


使用例1


  以小鼠 ES 细胞(胚胎干细胞)和 M1细胞(白血病衍生细胞)的基因组 DNA 为模板,经过亚硫酸盐处理后,PCR 扩增干细胞未分化标记FGF4启动子区。PCR 扩增的链长是 521bp,CpG 二核苷酸数为 61 位,对于亚硫酸氢钠 PCR 扩增链较长,因为 GC 含量高,被认为是对三维结构影响较大的区域。

  ES 细胞有干细胞未分化标记 FGF4 的 mRNA 表达,启动子区为非甲基化状态;M1 细胞没有用于体细胞分化的 Fgf4 的 mRNA 表达,被认为启动子区处于甲基化状态。

● 样本:小鼠 ES 细胞和小鼠 M1 细胞的基因组 DNA、

● PCR 扩增链长:521bp(小鼠 Fgf4 启动子区)

● CpG:61 位

● PCR 扩增区域 GenBank Accession No.

● AC_149593 : 230224–230744

 

结果


ES 细胞和 M1细胞的 PCR 扩增产物在克隆后,得到分析 11 个样本的碱基序列。小鼠 ES 细胞的 Fgf4 启动子区为非甲基化状态。小鼠 M1细胞的 Fgf4 启动子区为甲基化状态。

 

DNA重亚硫酸盐转化试剂盒                              EpiSight™ Bisulfite Conversion Kit Ver.2

DNA重亚硫酸盐转化试剂盒                              EpiSight™ Bisulfite Conversion Kit Ver.2

 


使用例2


  以 Lambda DNA 为模板,通过使用该试剂盒和 DNA 聚合酶在 Bisulfite 反应后,扩增 910bp 目的区域,分析碱基序列。Lambda DNA 中所有的胞嘧啶都是非甲基化,Bisulfite 反应后全部被转化为尿嘧啶,预测 PCR 扩增产物中不存在胞嘧啶。

● 样本:Lambda DNA

● 非甲基化胞嘧啶:150个

● PCR 扩增链长:910pb

● PCR 扩增区域 GenBank Accession No NC_001416 : 26062–269

 

结果


下图所示,不存在胞嘧啶,150 处的胞嘧啶全部转化为胸腺嘧啶。

以往的 Bisulfite 法中,DNA 分解严重,条件设置困难,本产品能简单地成功实现 900 bp 以上的 PCR 产物扩增。

 

DNA重亚硫酸盐转化试剂盒                              EpiSight™ Bisulfite Conversion Kit Ver.2

 

产品编号 产品名称 产品规格 产品等级
291-78501 EpiSight™BisulfiteConversion Kit Ver.2 20次 遗传因子研究用
293-78701 EpiSight™ BisulTaq™ DNA Polymerase, recombinant, Solution Ver.2 20次 遗传因子研究用

EpiSight(TM) Bisulfite Conversion Kit Ver.2 EpiSight™亚硫酸氢盐转化试剂盒2


EpiSight(TM) Bisulfite Conversion Kit Ver.2

EpiSight™亚硫酸氢盐转化试剂盒2

品牌:FUJIFILM Wako
CAS No.:
储存条件:2-10℃
纯度:
产品编号

(生产商编号)

等级 规格 运输包装 零售价(RMB) 库存情况 参考值

291-78501

for Genetic Research 20Tests 咨询


* 干冰运输、大包装及大批量的产品需酌情添加运输费用


* 零售价、促销产品折扣、运输费用、库存情况、产品及包装规格可能因各种原因有所变动,恕不另行通知,确切详情请联系上海金畔生物科技有限公司。

EpiMark® Bisulfite Conversion Kit |NEB酶试剂 New England Biolabs

上海金畔生物科技有限公司代理New England Biolabs(NEB)酶试剂全线产品,欢迎访问官网了解更多产品信息和订购。

产品信息

Genomic DNA from many organisms has modified nucleotides. In the mammalian genome, the modified base is predominately 5-methylcytosine (5-mC), which is involved in gene expression regulation, including selective inactivation of one X chromosome in females of mammalian species (1,2). Symmetrical CpG DNA methylation is heritable, but also reversible. This change of methylation status results in an enormous number of combinations of epigenetic states that can regulate gene expression. In mammalian cells, DNA methylation mainly occurs in CpG dinucleotides and is carried out by two methyltransferase enzymatic activities, namely, maintenance methylation and de novo methylation. The maintenance methyltransferase, DNMT1, is involved in the DNA methylation after every cellular DNA replication cycle. DNMT3a and DNMT3b are the de novo methyltransferases that are active in early development.

For optimal results, 50 ng–2 μg DNA is recommended.

Kit Components: 
Each EpiMark Bisulfite Conversion Kit contains sufficient reagents to perform the bisulfite conversion reaction of 48 samples. Store at room temperature (15–20°C). However, for long-term storage (longer than 4 weeks) Desulphonation Reaction Buffer concentrate should be stored at 2–8°C. Prepared Bisulfite Mix can be stored at -20°C for up to six months. 

产品类别:
Discontinued (<3 years)

  • 特性和用法

    需要但不提供的材料

    Custom design primers
    EpiMark Hot Start Taq DNA Polymerase (NEB #M0490) or other hot start DNA polymerase specific for bisulfite converted DNA.
    Heat block or water bath (requiring temperatures of 65°C and 92°C)
    96–100% molecular biology grade ethanol
    PCR Thermal Cycler
    0.2 ml strip tubes and caps
    1.5 ml reaction tubes
    Nuclease-free Water
    Pipettors and pipette tips (for minimization of cross contamination, use aerosol
    barrier tips)

  • 方法概述

    方法概述

    Many tools can be used to determine the methylaton status of DNA, including antibodies, methyl binding proteins, methylation-dependent restriction enzymes, and most recently next generation sequencing. However, the most commonly used technique to date is sodium bisulfite conversion, the “gold standard” for methylation analysis (3). Incubation of the target DNA with sodium bisulfite results in conversion of all unmodified cytosines to uracils leaving the modified bases (5-mC or 5-hmC) intact. (see Figure 1). The most critical step in methylation analysis using bisulfite conversion is the complete conversion of unmodified cytosines. This is achieved by alternating cycles of thermal denaturation with incubation reactions. The protocol optimized for this kit is simple and gives consistent results.

    Figure 1. Overview of Bisulfite Conversion ReactionEpiMark® Bisulfite Conversion Kit |
    Methylated cytosines are protected and remain unchanged, while unmethylated cytosines are deaminated to uracil after treatment with sodium bisulfite.
    Figure 2. Performance evaluation of the EpiMark Bisulfite Conversion Kit.EpiMark® Bisulfite Conversion Kit |
    One μg of genomic DNA was bisulfite treated using the Epimark Bisulfite Conversion Kit, and 2 μl of eluted DNA was analyzed by end-point PCR. 388, 544, and 731 bp amplicons were amplified with primer pairs for bisulfite converted DNA (lanes 1, 3, and 5), or with primer pairs for unconverted DNA (lanes 2, 4, and 6). Epimark Hot Start Taq DNA Polymerase was used for amplification. Lanes 2, 4, and 6 clearly show no amplification product, indicating complete DNA conversion. Marker M is the 2-Log DNA Ladder (NEB #N3200).
    Figure 3. Conversion of a methylated DNA fragment.EpiMark® Bisulfite Conversion Kit |
    50 nanograms of methylated plasmid DNA was bisulfite converted and a 146 bp DNA fragment was amplified using Epimark Hot Start Taq DNA Polymerase (NEB #M0490). Amplicons were cloned, and individual clones were sequenced to determine the methylation status. Sequence aligment of 10 clones is shown to demonstrate conversion of unmethylated cytosine to thymine, while the unconverted methylated cytosine remains intact. The known methylated cytosines at the CpG site shown in red, converted cytosines marked as T, and rest of the sequence is shown as a dashed line.

  • 相关产品

    相关产品

    • EpiMark® 热启动 Taq DNA 聚合酶

  • 参考文献

    1. Bestor, T.H., Verdine, G.L. (1994). Curr. Opin. Cell Biol. . 6, 380-389.
    2. Ooi, S.K., O’Donnell A.H., Bestor T.H. (2009). J. Cell Sci. 122, 2787-2791.
    3. Frommer, M., et. al. (1992). Proc. Natl. Acad. Sci. USA. 89, 1827-1831.
    4. Kumaki, Y., Oda, M. and Okano, M. (2008). Nucleic Acids Res. . 36,

操作说明、说明书 & 用法

  • 操作说明

    1. Reagent Preparation Using EpiMark® Bisulfite Conversion Kit (E3318)
    2. End-point PCR Using EpiMark® Bisulfite Conversion Kit (E3318)
    3. Cycling Protocol Using EpiMark™ Bisulfite Conversion Kit (E3318)

  • 说明书

    产品说明书包含产品使用的详细信息、产品配方和质控分析。

    • manualE3318

工具 & 资源

  • 选择指南

    • DNA Methylation Table

FAQs & 问题解决指南

  • FAQs

    1. How should I store my bisulfite converted DNA after it is eluted from the column?
    2. Does my sample need to be free of RNA for bisulfite conversion?
    3. No PCR product is detected when I amplify more than 300 bp amplicon.
    4. Do I need extra purification of my mammalian DNA prep in order to use it in a bisulfite conversion reaction?
    5. Which DNA polymerase do you recommend for amplification of converted DNA?
    6. My thermocycler does not allow to set up the reaction volume to 140 μl, what I should do?
    7. What is the shelf life of the reagents supplied?

Sodium Bisulfite 亚硫酸氢钠“生产专用”


Sodium Bisulfite

亚硫酸氢钠“生产专用”

品牌:FUJIFILM Wako
CAS No.:7631-90-5
储存条件:25℃以下
纯度:64.0 – 67.4% (as SO2)
产品编号

(生产商编号)

等级 规格 运输包装 零售价(RMB) 库存情况 参考值

194-13267

Japanese Pharmacopoeia 20kg 咨询


* 干冰运输、大包装及大批量的产品需酌情添加运输费用


* 零售价、促销产品折扣、运输费用、库存情况、产品及包装规格可能因各种原因有所变动,恕不另行通知,确切详情请联系上海金畔生物科技有限公司。