Related Experiment Videos
Capillary electrophoretic separation of nuclei released from single cells
Nilhan Gunasekera1, Karen J Olson, Karin Musier-Forsyth
1Department of Chemistry, University of Minnesota, 207 Pleasant Street S.E., Minneapolis, MN 55455, USA.
Analytical Chemistry
|January 31, 2004
Summary
This study introduces capillary electrophoresis to analyze intact nuclei from single cells. This method enables the study of subcellular heterogeneity, advancing our understanding of biological systems.
Area of Science:
- Cell Biology
- Analytical Chemistry
- Biophysics
Background:
- Understanding subcellular heterogeneity is crucial for biological systems.
- Analyzing intact organelles from single cells presents significant technical challenges.
Purpose of the Study:
- To develop a capillary electrophoresis (CE) method for analyzing intact nuclei from single mammalian cells.
- To investigate the feasibility of studying subcellular compartments using CE.
Main Methods:
- Single human DeltaH2-1 cells expressing fluorescent proteins (nuclear-targeted and plasma membrane-bound) were analyzed.
- On-column digitonin treatment was used to separate plasma membranes from nuclei.
- Selective laser-induced fluorescence detection was employed to monitor subcellular compartments.
Main Results:
- The first capillary electrophoresis analysis of intact nuclei released from single cells was achieved.
- Digitonin treatment effectively separated plasma membranes from nuclei, with <0.1% membrane remaining bound to nuclei.
- Electropherograms showed distinct peaks for nuclear and other subcellular localizations of fluorescent proteins.
Conclusions:
- Capillary electrophoresis is a feasible technique for studying intact organelles isolated from single mammalian cells.
- This method provides a foundation for exploring the biological relevance of subcellular heterogeneity.