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- W2748188081 abstract "Abstract Asymmetric cell divisions are of fundamental importance for the development of multicellular organisms, e.g. for the generation of founder cells. Prime examples are asymmetric cell divisions in germline precursors during the early embryogenesis of the transparent roundworm Caenorhabditis elegans , one of the major developmental model organisms. However, due to a lack of quantitative data it has remained unclear how frequent unequal daughter cell sizes emerge in the worm’s early embryogenesis, and whether these originate from sterical or biochemical cues. Using quantitative light-sheet microscopy, we have found that about 40% of all cell divisions in C. elegans until gastrulation generate daughter cells with significantly different volumes. Removing the embryo’s rigid eggshell revealed asymmetric divisions in somatic cells to be primarily induced by steric effects. Division asymmetries in the germline remained unaltered and were correctly reproduced by a model based on a cell-size independent, eccentric displacement of the metaphase plate. Our data suggest that asymmetric cell divisions, imposed by physical determinants, are essential for establishing important cell-cell interactions that eventually fuel a successful embryogenesis." @default.
- W2748188081 created "2017-08-31" @default.
- W2748188081 creator A5050264123 @default.
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- W2748188081 date "2017-08-24" @default.
- W2748188081 modified "2023-09-25" @default.
- W2748188081 title "Physical determinants of asymmetric cell divisions in the early development of Caenorhabditis elegans" @default.
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- W2748188081 doi "https://doi.org/10.1038/s41598-017-09690-4" @default.
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