Clonal dominance in excitable cell networks.
Clonal dominance in excitable cell networks.
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DOI:
10.1038/s41567-021-01383-0
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发表时间:
2021-12
期刊:
影响因子:
19.6
通讯作者:
Shvartsman SY
中科院分区:
文献类型:
--
作者:
Alsous JI;Rozman J;Marmion RA;Košmrlj A;Shvartsman SY
Clonal dominance arises when the descendants (clones) of one or a few founder cells contribute disproportionally to the final structure during collective growth. In contexts such as bacterial growth, tumorigenesis, and stem cell reprogramming, this phenomenon is often attributed to pre-existing propensities for dominance, while in stem cell homeostasis, neutral drift dynamics are invoked. The mechanistic origin of clonal dominance during development, where it is increasingly documented, is less understood. Here, we investigate this phenomenon in the Drosophila melanogaster follicle epithelium, a system in which the joint growth dynamics of cell lineage trees can be reconstructed. We demonstrate that clonal dominance can emerge spontaneously, in the absence of pre-existing biases, as a collective property of evolving excitable networks through coupling of divisions among connected cells. Similar mechanisms have been identified in forest fires and evolving opinion networks; we show that the spatial coupling of excitable units explains a critical feature of the development of the organism, with implications for tissue organization and dynamics.
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