一个基于异的分子传感器组装在MS2病毒体支架上
Tyler Meldrum1, Kristen L Seim, Vikram S Bajaj
1College of Chemistry, University of California, Berkeley, Berkeley, California 94720, USA.
Journal of the American Chemical Society
|April 16, 2010
概括
研究人员开发了一种新的磁共振成像 (MRI) 对比剂,使用病毒囊中的子传感器. 这种分子成像剂具有前所未有的灵敏度,可以在皮科莫拉度下进行检测.
科学领域:
- 分子成像学分子成像学
- 生物物理学的生物物理.
- 纳米技术纳米技术
背景情况:
- 磁共振成像 (MRI) 通常通过散装磁性质来区分解剖结构.
- 外源对比剂通过准特定的分子标来增强MRI对比度.
- 基于的传感器通过超极化交换提供分子成像能力.
研究的目的:
- 开发一种高度敏感的分子成像剂用于磁共振.
- 为了提高基于的传感器的检测极限,使用病毒体支架.
- 探索多价值在提高分子传感器性能方面的潜力.
主要方法:
- 将大约125个异传感器分子纳入MS2病毒囊体的内部.
- 利用病毒囊的多价值性和固有的特性来放大传感器信号.
- 使用磁共振技术绘制传感器-连接体复合体分布的图像.
主要成果:
- 从封装 xenon 传感器获得信号放大.
- 在0.7 picomolar (pM) 的前所未有的度下,证明了分子成像剂的检测.
- 建立了磁共振分子成像剂灵敏度的新基准.
结论:
- 将子传感器封装在病毒囊中显著提高了检测灵敏度.
- 这种方法有望在比以前可能的低得多的度下检测化学目标.
- 病毒体作为有效的支架,用于开发先进的分子成像剂.
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