Temporal variability and cell mechanics control robustness in mammalian embryogenesis

Dimitri Fabrèges, Bernat Corominas-Murtra, Prachiti Moghe, Alison Kickuth, Takafumi Ichikawa, Chizuru Iwatani, Tomoyuki Tsukiyama, Nathalie Daniel, Julie Gering, Anniek Stokkermans, Adrian Wolny, Anna Kreshuk, Véronique Duranthon, Virginie Uhlmann, Edouard Hannezo, Takashi Hiiragi

Onderzoeksoutput: Bijdrage aan wetenschappelijk tijdschrift/periodieke uitgaveArtikelWetenschappelijkpeer review

2 Citaten (Scopus)

Samenvatting

How living systems achieve precision in form and function despite their intrinsic stochasticity is a fundamental yet ongoing question in biology. We generated morphomaps of preimplantation embryogenesis in mouse, rabbit, and monkey embryos, and these morphomaps revealed that although blastomere divisions desynchronized passively, 8-cell embryos converged toward robust three-dimensional shapes. Using topological analysis and genetic perturbations, we found that embryos progressively changed their cellular connectivity to a preferred topology, which could be predicted by a physical model in which actomyosin contractility and noise facilitate topological transitions, lowering surface energy. This mechanism favored regular embryo packing and promoted a higher number of inner cells in the 16-cell embryo. Synchronized division reduced embryo packing and generated substantially more misallocated cells and fewer inner-cell-mass cells. These findings suggest that stochasticity in division timing contributes to robust patterning.

Originele taal-2Engels
Pagina's (van-tot)eadh1145
TijdschriftScience
Volume386
Nummer van het tijdschrift6718
DOI's
StatusGepubliceerd - 11 okt. 2024

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