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Strain-triggered mechanical feedback in self-organizing optic-cup morphogenesis

机译:自组织视杯形态发生中的应变触发机械反馈

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摘要

Organogenesis is a self-organizing process of multiple cells in three-dimensional (3D) space, where macroscopic tissue deformations are robustly regulated by multicellular autonomy. It is clear that this robust regulation requires cells to sense and modulate 3D tissue formation across different scales, but its underlying mechanisms are still unclear. To address this question, we developed a versatile computational model of 3D multicellular dynamics at single-cell resolution and combined it with the 3D culture system of pluripotent stem cell–derived optic-cup organoid. The complementary approach enabled quantitative prediction of morphogenesis and its corresponding verification and elucidated that the macroscopic 3D tissue deformation is fed back to individual cellular force generations via mechanosensing. We hereby conclude that mechanical force plays a key role as a feedback regulator to establish the robustness of organogenesis.
机译:器官发生是三维(3D)空间中多个细胞的自组织过程,其中宏观组织变形受到多细胞自主性的强力调节。显然,这种强大的调节要求细胞跨不同尺度感应和调节3D组织的形成,但其潜在机制仍不清楚。为了解决这个问题,我们开发了一种在单细胞分辨率下的3D多细胞动力学通用计算模型,并将其与多能干细胞衍生的视杯类器官的3D培养系统结合使用。互补方法使能够定量预测形态发生及其相应的验证,并阐明了宏观3D组织变形是通过机械传感反馈到单个细胞力生成的。我们在此得出结论,机械力在建立器官发生的鲁棒性方面起着重要的反馈调节作用。

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