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THE NAKED MICROSCOPE

机译:裸显微镜

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Sunney Xie's newest microscopes don't look like the latest in sophistication. Tucked away in his biochemistry lab at Harvard University, they seem to be ad hoc assemblies of lasers, objectives and electronics, surrounded by a thicket of optical equipment. "Don't worry about most of these," says graduate student Christian Freud-iger, gesturing to the latest addition to Xie's microscope family. "You only need a few optics to use the microscope. The rest are just for us to play with." As he leans briefly on the table, which is designed to eliminate vibrations, it counterbalances his weight with a reproachful "shhhh".rnFreudiger and the other researchers 'playing' in Xie's lab have pioneered techniques to see biological molecules in theirrnnatural state. Based on Raman spectroscopy, the methods detect compounds from the characteristic vibrations of their chemical bonds, and they free the user from having to label molecules by attaching tags such as gold particles, antibodies or fluorescent proteins. Many researchers are unwilling to abandon labels because they offer an unparalleled ability to distinguish target molecules in a cell. But for others, who want to observe a molecule 'naked', without the interference of a molecular tag, it is proving to be hugely liberating.
机译:Sunney Xie的最新显微镜看上去不像最新的那样复杂。它们藏在哈佛大学的生物化学实验室中,似乎是激光器,物镜和电子设备的临时组件,周围是光学设备的灌木丛。研究生克里斯蒂安·弗洛伊德·伊格尔(Christian Freud-iger)指着谢氏显微镜家族的最新成员说:“不用担心其中的大多数。” “使用显微镜只需几个光学元件。其余的只是供我们使用。”当他短暂地倚靠在桌子上时,桌子上是用来消除振动的,它通过可恶的“嘘”来抵消他的体重。弗洛迪格和谢在实验室中扮演的其他研究人员开创了观察生物分子处于自然状态的技术。基于拉曼光谱法,这些方法从其化学键的特征振动中检测化合物,并且使用户无需通过附着标签(如金颗粒,抗体或荧光蛋白)来标记分子。许多研究人员不愿放弃标签,因为它们提供了无与伦比的区分细胞中靶分子的能力。但是对于其他想要观察一个“裸露”分子而又不受分子标签干扰的人来说,它被证明是极大的解放。

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  • 来源
    《Nature》 |2009年第7247期|636-637|共2页
  • 作者

    Heidi Ledford;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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