Kuttler, Celine

Lhoussaine, Cédric

Saka, Yasushi

Thiel, Marco

Ullner, Ekkehard

English

PubMed

Yasushi Saka

Cédric Lhoussaine

Celine Kuttler

Ekkehard Ullner

Marco Thiel

Crossref

Theoretical basis of the community effect in development

International audienceGenetically identical cells often show significant variation in gene expression profile and behaviour even in the same physiological condition. Notably, embryonic cells destined to the same tissue maintain a uniform transcriptional regulatory state and form a homogeneous cell group. One mechanism to keep the homogeneity within embryonic tissues is the so-called community effect in animal development. The community effect is an interaction among a group of many nearby precursor cells, and is necessary for them to maintain tissue-specific gene expression and differentiate in a coordinated manner. Although it has been shown that the cell-cell communication by a diffusible factor plays a crucial role, it is not immediately obvious why a community effect needs many cells. In this work, we propose a model of the community effect in development, which consists in a linear gene cascade and cell-cell communication. We examined the properties of the model theoretically using a combination of stochastic and deterministic modelling methods. We have derived the analytical formula for the threshold size of a cell population that is necessary for a community effect, which is in good agreement with stochastic simulation results

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A community effect in animal development.

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Theoretical basis of the community effect in development

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