使用pyrrole-imidazole聚胺微阵列对双链DNA序列进行序列选择检测
Ishwar Singh1, Christian Wendeln, Alasdair W Clark
1Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom.
Journal of the American Chemical Society
|February 6, 2013
概括
这项研究提出了一种新的微阵列,用于检测特定的双链DNA序列. 该方法使用专门的分子来实现高序列选择性,甚至可以区分单基不匹配.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 精确检测特定的DNA序列对于诊断和研究至关重要.
- 现有的方法可能缺乏所需的序列选择性,特别是对于双链DNA.
- 开发新的固定和检测策略是一个持续的挑战.
研究的目的:
- 开发和演示一种微阵列格式,用于高度选择性的双链DNA序列检测.
- 为了利用pyrrole-imidazole聚胺用于特定的DNA结合.
- 为这些聚胺在固体基板上建立一个高效的固定方法.
主要方法:
- 在亚化物修饰的玻璃基板上固定循环基因衍生型的pyrrole-imidazole聚胺.
- 使用微接触式印刷来准确形成图案.
- 采用应变促进的亚酸-酸环添加反应 (SPAAC) 进行共价附着.
- 测试基质在双链DNA中检测特定的七基对结合部位的能力.
主要成果:
- 开发的微阵列格式显示了对双链DNA的高序列选择性.
- 实现了对七基对结合部位的选择性检测.
- 该系统成功地将目标序列与单基对不匹配的序列区分开来,甚至超过了.
结论:
- 描述的微阵列格式为选择性双链DNA检测提供了一个强大的平台.
- 聚胺和SPAAC化学的组合为创建DNA感应表面提供了一个有效的策略.
- 这项技术在基因分析和分子诊断中具有潜在的应用.
相关概念视频
01:05Maxam-Gilbert Sequencing
In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
The...
Challenges of the Maxam-Gilbert Method
The...
02:34DNA Microarrays
Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...