Multiple-color fluorescence imaging of chromosomes and microtubules in living cells

Cell Structure and Function
Tokuko HaraguchiYasushi Hiraoka

Abstract

Microscopic observation of fluorescently-stained intracellular molecules within a living cell provides a straightforward approach to understanding their temporal and spatial relationships. However, exposure to the excitation light used to visualize these fluorescently-stained molecules can be toxic to the cells. Here we describe several important considerations in microscope instrumentation and experimental conditions for avoiding the toxicity associated with observing living fluorescently-stained cells. Using a computer-controlled fluorescence microscope system designed for live observation, we recorded time-lapse, multi-color images of chromosomes and microtubules in living human and fission yeast cells. In HeLa cells, a human cell line, microtubules were stained with rhodamine-conjugated tubulin, and chromosomes were stained with a DNA-specific fluorescent dye, Hoechst33342, or with rhodamine-conjugated histone. In fission yeast cells, microtubules were stained with alpha-tubulin fused with the jellyfish green fluorescent protein (GFP), and chromosomes were stained with Hoechst33342.

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Citations

Jul 30, 2005·Journal of Zhejiang University. Science. B·Min LuJian-yong Li
Nov 17, 2005·Molecular and Cellular Biology·Yukinori MinoshimaTatsuo Fukagawa
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