Methylation profiles of genes utilizing newly developed CpG island methylation microarray on colorectal cancer patients.

Methylation profiles of genes utilizing newly developed CpG island methylation microarray on colorectal cancer patients.
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在结直肠癌患者上利用新开发的CpG岛甲基化微阵列的基因的甲基化谱。

DOI:
10.1093/nar/gni046
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发表时间:
2005-03-10
影响因子:
14.9
通讯作者:
Matsubara, N
Matsubara, N
中科院分区:
生物学2区
文献类型:
--
作者:
Kimura, N;Nagasaka, T;Murakami, J;Sasamoto, H;Murakami, M;Tanaka, N;Matsubara, N

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DNA的异常甲基化已被证明在多种人类癌症、发育障碍和衰老中发挥重要作用。因此,基因中的异常甲基化模式可能是这种情况的分子标记。因此,一种可靠而简单的检测DNA甲基化的方法是首选,不仅用于研究目的,而且用于日常临床实践。为了实现这些目标,我们建立了一个基于寡核苷酸微阵列技术的精确系统来识别DNA甲基化模式。我们的微阵列方法与传统方法相比具有优势,并且是独特的,因为它允许在目标区域内精确测量甲基化模式。我们简单的信号检测系统依赖于使用亲和素-生物素化过氧化物酶复合物,不需要昂贵的激光扫描仪或危险的放射性同位素。在这项研究中,我们应用我们的技术检测o6 -甲基鸟嘌呤- dna甲基转移酶(MGMT)基因的启动子甲基化状态。我们易于操作的技术提供了MGMT启动子中甲基化CpGs的可重复性和精确测量,因此,我们的方法可能会为临床目的的各种高通量DNA甲基化分析的处理带来潜在的发展。
Aberrant methylation of DNA has been shown to play an important role in a variety of human cancers, developmental disorders and aging. Hence, aberrant methylation patterns in genes can be a molecular marker for such conditions. Therefore, a reliable but uncomplicated method to detect DNA methylation is preferred, not merely for research purposes but for daily clinical practice. To achieve these aims, we have established a precise system to identify DNA methylation patterns based on an oligonucleotide microarray technology. Our microarray method has an advantage over conventional methods and is unique because it allows the precise measurement of the methylation patterns within a target region. Our simple signal detection system depends on using an avidin–biotinylated peroxidase complex and does not require an expensive laser scanner or hazardous radioisotope. In this study, we applied our technique to detect promoter methylation status of O6-methylguanine-DNA methyltransferase (MGMT) gene. Our easy-handling technology provided reproducible and precise measurement of methylated CpGs in MGMT promoter and, thus, our method may bring about a potential evolution in the handling of a variety of high-throughput DNA methylation analyses for clinical purposes.
DOI: 10.1073/pnas.93.18.9821
发表时间: 1996-09-03
影响因子: 11.1
作者:
Herman, JG;Graff, JR;Baylin, SB
通讯作者: Baylin, SB
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发表时间: 2004-04-01
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DOI: 10.1016/s0002-9440(10)63628-0
发表时间: 2003-07-01
影响因子: 6
作者:
Chen, CM;Chen, HL;Huang, THM
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