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Entropic pressure between fluctuating membranes in multilayer systems

Li Long ^1,2 Wang Xiaohuan ¹ Shao Yingfeng ^1,2 Li Wei ³ Song Fan ^1,2 ^*

文摘	Gaining insights into the fluctuation-induced entropic pressure between membranes that mediates cell adhesion and signal transduction is of great significance for understanding numerous physiological processes driven by intercellular communication.Although much effort has been directed toward investigating this entropic pressure,there still exists tremendous controversy regarding its quantitative nature,which is of primary interest in biophysics,since Freund challenged the Helfrich’s well-accepted results on the distance dependence.In this paper,we have investigated the entropic pressure between fluctuating membranes in multilayer systems under pressure and tension through theoretical analysis and Monte Carlo simulations.We find that the scaling relations associated with entropic pressure depend strongly on the magnitude of the external pressures in both bending rigidityand surface tension-dominated regimes.In particular,both theoretical and computational results consistently demonstrate that,in agreement with Helfrich,the entropic pressure p decays with inter-membrane separations c as p~c~(-3)for the tensionless multilayer systems confined by small external pressures.However,our results suggest that the entropic pressure law follows to be p~c~(-1)and p~c~(-3),respectively,in the limit of large and small thermal wavelengths for bending fluctuations of the membranes in a tensionindependent manner for the case of large external pressures.
来源	Science China. Physics , Mechanics & Astronomy,2018,61(12):128711-1-128711-8 【核心库】
DOI	10.1007/s11433-018-9264-x
关键词	entropic pressure ; fluctuating membranes ; statistical mechanics theory ; Monte Carlo simulation ; cell adhesion
地址	1. Institute of Mechanics,Chinese Academy of Sciences, State Key Laboratory of Nonlinear Mechanics(LNM);;Beijing Key Laboratory of Engineered Construction and Mechanobiology, Beijing, 100190 2. School of Engineering Science,University of Chinese Academy of Sciences, Beijing, 100049 3. School of Mechanical and Electrical Engineering,North China Institute of Aerospace Engineering, Langfang, 065000
语种	英文
文献类型	研究性论文
ISSN	1674-7348
学科	分子生物学
基金	国家自然科学基金 ; the Strategic Priority Research Program of the Chinese Academy of Sciences ; 国家科技攻关计划项目
文献收藏号	CSCD:6384410

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引证文献 2 篇

1 Wen Pinjing A computational model for capturing the distinct in- and out-of-plane response of lipidmembranes Acta Mechanica Sinica,2021,37(1):138-144
被引 0 次

2 Li Long Cis-interaction of ligands on a supported lipid bilayer afects their binding to cell adhesion receptors Science China. Physics, Mechanics & Astronomy,2021,64(10):108712
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