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Updated: Jul 5, 2025

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质谱图书馆用于DNA吸收学

Scott J Walmsley^1,2, Jingshu Guo^2,3,4, Anamary Tarifa⁵

¹Institute for Health Informatics, University of Minnesota, Minneapolis, Minnesota 55455, United States.

Chemical research in toxicology

|January 17, 2024

概括

由环境因素形成的DNA附加物,如果不修复,可能会导致癌症. 一个新的光谱数据库和门户帮助检测和描述这些DNA,有助于推进癌症研究.

科学领域:

环境健康环境健康
分子生物学分子生物学
毒理学毒理学毒理学

背景情况:

从内源电友,辐射和环境化学物质中形成DNA附加物.
在关键基因中的未修复的DNA添加物可以导致突变和癌症.
精确检测和定量DNA添加物对于理解致癌和风险评估至关重要.

研究的目的:

建立一个全面的DNA adduct质谱数据库.
为了促进已知和新型DNA adducts的检测和表征.
创建一个中心化资源,用于DNA adductomics研究社区.

主要方法:

收集了来自研究人员的合成DNA提取标准.
使用Orbitrap和Q-TOF仪器获得的质谱 (MS) 分裂光谱.
处理了光谱数据并将其集成到北美MassBank (MoNA) 数据库中.
开发了一个DNA adduct门户网站,用于数据访问和下载.

主要成果:

已经创建了一个可下载的DNA附加物的光谱库.
DNA 引进门户作为质谱和元数据的中央存储库.
该数据库有助于识别以前观察到的和新的DNA adducts.

结论:

开发的光谱图书馆和门户网站是DNA补充学研究的宝贵资源.
这一举措加速了对DNA附带在疾病中的作用的研究.
更好地了解DNA添加物将增强疾病风险评估和预防策略.

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Mass Spectrum

Mass Spectrum

A mass spectrum is the graphical representation of the relative abundance of the charged fragments in an analyte plotted against their mass-to-charge ratio (m/z). The plot's x axis represents the ratio of the mass of the charged fragment to the elementary charge it carries. The y axis of the plot represents the relative abundance of each charged species. The relative abundance is calculated from the signal intensity of each charged species recorded at the detector. The most intense signal...