发光的锁定核酸:明亮的光探针用于检测细胞中的核酸
Michael E Østergaard1, Pallavi Cheguru, Madhusudhan R Papasani
1Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, USA.
Journal of the American Chemical Society
|September 18, 2010
概括
研究人员开发了用于敏感核酸检测的新型发光LNA探针. 这些探头提供高亲和度,优秀的不匹配歧视,和生物医学应用的明亮光.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 核酸化学的核酸化学
背景情况:
- 光素改性寡核酸对基因组学至关重要,使单核酸多态性检测和mRNA成像等应用成为可能.
- 混合化探头和分子信标 (MBs) 通常使用极性敏感的光体进行基于光的核酸检测.
研究的目的:
- 引入一种新型的2'-N-(pyren-1-yl) carbonyl-2'-amino锁定核酸 (LNA) 单体 (X单体) 作为高级杂交探针的多功能构建块.
- 展示开发高效,无火器的MB和具有可调节性质的Glowing LNA探针,用于增强核酸检测.
主要方法:
- 合成和表征发光的LNA单体,并将其纳入杂交探头和MBs.
- 评估探针杂交亲和力,不匹配歧视,生物稳定性和光性质.
- 使用体外转录试验和直接显微观观察来证明特定的信使RNA (mRNA) 结合.
主要成果:
- 发光的LNA探针对RNA点具有很高的亲和力,优异的不匹配歧视和优异的生物稳定性.
- 探测器显示出显著的杂交诱导的光增加,形成明亮的光复合体,具有高发射量子产量 (Φ) (F) = 0.45-0.89).
- 基于Glowing LNA单体的无灭器MBs在试验室和原生形式中显示出与mRNA的特定结合.
结论:
- 开发的Glowing LNA单体X是一种高效的构建模块,用于创建高效的混合化探头和无火器的MB.
- 这些探测器具有可调节的杂交和光特性,使它们适合敏感和特定的核酸检测.
- 发光的LNA探针显示出作为各种生物医学应用的诊断工具的显著前景.
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