Detecting Chemically Modified DNA Bases Using Surface Enhanced Raman Spectroscopy.

Detecting Chemically Modified DNA Bases Using Surface Enhanced Raman Spectroscopy.
复制标题

DOI:
10.1021/jz201423b
复制
发表时间:
2011-12-15
期刊:
The journal of physical chemistry letters
影响因子:
--
通讯作者:
Halas NJ
Halas NJ
中科院分区:
其他
文献类型:
--
作者:
Barhoumi A;Halas NJ

文献摘要

参考文献

被引文献

相似文献

DNA的翻译后修饰——在不改变DNA序列的情况下发生的单个碱基化学结构的改变——已知会改变基因表达。它们被认为经常导致有害的表型变化,如癌症。腺嘌呤甲基化、胞嘧啶甲基化和羟甲基化以及鸟嘌呤氧化是迄今为止发现的主要DNA碱基修饰。在这里,我们表明可以使用表面增强拉曼光谱(SERS)来检测这些初级DNA碱基修饰。SERS检测修饰的DNA碱基是无标记的,需要最少的额外样品制备,减少了在测量前诱导额外化学修饰的可能性。这种方法显示了DNA碱基修饰评估作为一种潜在的常规分析的可行性,可以进一步发展为临床诊断。
Post-translational modifications of DNA- changes in the chemical structure of individual bases that occur without changes in the DNA sequence- are known to alter gene expression. They are believed to result in frequently deleterious phenotypic changes, such as cancer. Methylation of adenine, methylation and hydroxymethylation of cytosine, and guanine oxidation are the primary DNA base modifications identified to date. Here we show it is possible to use surface enhanced Raman spectroscopy (SERS) to detect these primary DNA base modifications. SERS detection of modified DNA bases is label-free and requires minimal additional sample preparation, reducing the possibility of additional chemical modifications induced prior to measurement. This approach shows the feasibility of DNA base modification assessment as a potentially routine analysis that may be further developed for clinical diagnostics.
DOI: 10.2144/000113403
发表时间: 2010-04-01
期刊: BIOTECHNIQUES
影响因子: 2.7
作者:
Nestor, Colm;Ruzov, Alexey;Dunican, Donncha S.
通讯作者: Dunican, Donncha S.
DOI: 10.1039/b9nr00063a
发表时间: 2009-10-01
期刊: NANOSCALE
影响因子: 6.7
作者:
Kundu, Janardan;Levin, Carly S.;Halas, Naomi J.
通讯作者: Halas, Naomi J.
DOI: 10.1038/nbt.1681
发表时间: 2010-10
影响因子: 46.9
作者:
通讯作者: --
DOI: 10.1073/pnas.89.15.7022
发表时间: 1992-08-01
影响因子: 11.1
作者:
MICHAELS, ML;CRUZ, C;MILLER, JH
通讯作者: MILLER, JH
DOI: 10.1093/nar/10.8.2709
发表时间: 1982-01-01
影响因子: 14.9
作者:
EHRLICH, M;GAMASOSA, MA;GEHRKE, C
通讯作者: GEHRKE, C