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当胞嘧啶环的5-Carbon处的甲基组共价时, 产生5-甲基胞嘧啶,DNA就发生甲基化。这些甲基组投入DNA深沟中,并抑制转录。在人类DNA中,5-甲基胞嘧啶占DNA全基因组大约1.5%,主要在CpG处。0.3 至0.2 kb DNA段中CpG簇,称之为CpG岛,这些CpG岛典型性的出现在基因的第一个启动子区域者在其附近,在该处转录开始。在大量基因组DNA中,大部分CpG段都被重度甲基化。然而,在处于萌芽阶段的组织及正常体细胞的启动子中,CpG岛仍然保持未被甲基化,可以产生基因表达。当CpG岛在基因启动子区已经甲基化了,该基因的表达就被抑制。这种抑制起因于直接抑制特异转录因子结合,及间接充实甲基-CpG-结合蛋白及其相关抑制染色质重组装活动。除对基因转录的影响外,DNA甲基化还影响到染色质结构域的形成和基因组印记,该印记引用亲本基因的原特异表达式。
高度特异的DNA甲基化的富集应该提供一个优势且方便,可以综合识别的甲基化状态的正常和病变细胞,例如癌细胞,这可能导致开发新的诊断和治疗癌症的方法。几个方法已用于富集甲基化DNA,包括甲基CpG结合域(MBD),来建立甲基化DNA亲和柱和免疫沉淀反应。然而,到目前为止这些方法相当耗时,耗力、低产量,尤其是,需要净化DNA为原料。下面是胞嘧啶的甲基化、羟甲基化形式:
开发的细胞MeDIP试剂盒。是专门针对各种类型细胞样本而设计的,具有如下的优势和特性: 直接从细胞中免疫沉淀甲基化的DNA片段。 高效率富集甲基化的DNA:>95% 最快速可操作的步骤,仅需4小时即可完成。 微孔板的设计使实验更加灵活:方便了手动或高通量。 包含的柱子可以纯化DNA:节约时间和劳力。 兼容所有以DNA为基础的扩增实验。 简单、可信和实验条件始终如一。
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型号:A-P-2019-24(24次)
型号:A-P-2019-48(48次) 储存温度
CP1
10X清洗液
28 ml 56 ml 室温 CP2
抗体缓冲液
15 ml 30 ml 室温 CP3A 预先-裂解液 4 ml 6 ml 室温 CP3B 裂解液 4 ml 6 ml 室温 CP4 Chip稀释液 4 ml 6 ml 室温 CP5 DNA释放液 1 ml 4 ml 室温 CP6 反向缓冲液 1 ml 4 ml 室温 CP7 结合液 5 ml 8 ml 室温 CP8 洗脱液 0.6 ml 1.2 ml 室温 NMI Normal-Mouse IgG(1mg/ml)* 10 ul 20 ul 4°C 蛋白酶K(10mg/ml)* 25 ul 50 ul 4°C 甲基化抗体K(1mg/ml)* 25 ul 50 ul 4°C 带裙边条状8联管 3条 6条 4°C 粘性封口膜 3片 6片 室温 FC F-spin Column* 30个 50个 室温 FCT
F-Collection Tube
30个 50个 室温 操作手册
1
1 室温
*注意:在将离心柱放入微型离心机之前,始终将离心柱盖子旋紧盖严。
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文件下载 文件内容 资源说明 
A-P-2019-细胞MeDIP试剂盒 操作手册 
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FAQ
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Yuan WB et. al. (December 2021). TET1 mediated male reproductive toxicity induced by Bisphenol A through Catsper-Ca<sup>2+</sup> signaling pathway. Environ Pollut. 296:118739.
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Glait-Santar C et. al. (August 2012). Expression pattern of SVEP1 alternatively-spliced forms. Gene. 505(1):137-45.
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Schwarz JM et. al. (December 2011). Early-life experience decreases drug-induced reinstatement of morphine CPP in adulthood via microglial-specific epigenetic programming of anti-inflammatory IL-10 expression. J Neurosci. 31(49):17835-47.
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