文章基本信息

标题：Fluid pumping and active flexoelectricity can promote lumen nucleation in cell assemblies
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作者：Charlie Duclut ; Charlie Duclut ; Niladri Sarkar 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2019
卷号：116
期号：39
页码：19264-19273
DOI：10.1073/pnas.1908481116
出版社：The National Academy of Sciences of the United States of America
摘要：We discuss the physical mechanisms that promote or suppress the nucleation of a fluid-filled lumen inside a cell assembly or a tissue. We discuss lumen formation in a continuum theory of tissue material properties in which the tissue is described as a 2-fluid system to account for its permeation by the interstitial fluid, and we include fluid pumping as well as active electric effects. Considering a spherical geometry and a polarized tissue, our work shows that fluid pumping and tissue flexoelectricity play a crucial role in lumen formation. We furthermore explore the large variety of long-time states that are accessible for the cell aggregate and its lumen. Our work reveals a role of the coupling of mechanical, electrical, and hydraulic phenomena in tissue lumen formation..
关键词：tissue biophysics ; lumen formation ; continuum theory of tissues ; tissue hydraulics ; tissue flexoelectricity