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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Micromanipulation of daughter cells for the study of cytokinetic abscission.
The last step of cytokinesis, abscission, consists in the severing of the intercellular bridge connecting the two daughter cells. Because daughter cells move randomly on regular cell culture substrates, the use of adhesive micropatterns facilitates the observation of the intercellular bridge and its severing. Here we propose general rules to design micropatterns optimized to study this process. In particular, these micropatterns allow a good stabilization of the daughter cells and a predictable positioning of the intercellular bridge. We suggest a series of micropatterns controlling various cellular parameters such as distance between daughter cells or daughter cells polarization. We give recommendations for videomicroscopy acquisition during cell division and propose automated image analysis methods using kymograph analysis or bridge detection. Finally, we detail methods to artificially cut the intercellular bridge using UV-based laser ablation or using two-photons laser ablation.
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