Staining and embedding of human chromosomes for 3-d serial block-face scanning electron microscopy.

Staining and embedding of human chromosomes for 3-d serial block-face scanning electron microscopy.
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用于 3 维连续块面扫描电子显微镜的人类染色体染色和嵌入。

DOI:
10.2144/000114236
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发表时间:
2014
期刊:
影响因子:
2.7
通讯作者:
I. Robinson
I. Robinson
中科院分区:
工程技术4区
文献类型:
--
作者:
M. Yusuf;Bo Chen;T. Hashimoto;A. Estandarte;G. Thompson;I. Robinson

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人类染色体的高阶结构是一个仍在研究​​中的重要生物学问题。主要使用二维显微镜方法对人类有丝分裂染色体进行成像研究。为了对微米大小的人类染色体进行 3D 成像,我们开发了一种为串行块面扫描电子显微镜 (SBFSEM) 准备样品的程序。首先使用简单的过滤方法分离多胺染色体,然后用重金属染色。我们证明 DNA 特异性铂蓝比四氧化锇具有更高的对比度。然后使用将染色体嵌入树脂中的两步程序来浓缩染色体样品。叠加 SBFSEM 图像后,在 3D 中观察到熟悉的 X 形染色体。
The high-order structure of human chromosomes is an important biological question that is still under investigation. Studies have been done on imaging human mitotic chromosomes using mostly 2-D microscopy methods. To image micron-sized human chromosomes in 3-D, we developed a procedure for preparing samples for serial block-face scanning electron microscopy (SBFSEM). Polyamine chromosomes are first separated using a simple filtration method and then stained with heavy metal. We show that the DNA-specific platinum blue provides higher contrast than osmium tetroxide. A two-step procedure for embedding chromosomes in resin is then used to concentrate the chromosome samples. After stacking the SBFSEM images, a familiar X-shaped chromosome was observed in 3-D.
DOI: 10.1016/j.jsb.2008.10.002
发表时间: 2009-02-01
影响因子: 3
作者:
Schroeder-Reiter, Elizabeth;Perez-Willard, Fabian;Wanner, Gerhard
通讯作者: Wanner, Gerhard