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The lateral diffusion of lipids within membrane is of paramount importance, serving as a central mechanism in numerous physiological processes including cell signaling, membrane trafficking, protein activity regulation, and energy…

软凝聚态物质 · 物理学 2024-07-09 V. K. Sharma , H. Srinivasan , J. Gupta , S. Mitra

Cells use homeostatic mechanisms to maintain an optimal composition of distinct types of phospholipids in cellular membranes. The hydrophilic dipolar layer at the membrane interface, composed of phospholipid headgroups, regulates the…

软凝聚态物质 · 物理学 2021-07-13 Hanne S. Antila , Anika Wurl , O. H. Samuli Ollila , Markus S. Miettinen , Tiago M. Ferreira

Lipid bilayers forming biological membranes are known to behave as viscous 2D fluids on submicrometer scales; usually they contain a large number of active protein inclusions. Recently, it has been shown [Proc. Nat. Acad. Sci. USA 112,…

软凝聚态物质 · 物理学 2016-08-31 Yuki Koyano , Hiroyuki Kitahata , Alexander S. Mikhailov

A variety of models for the membrane-mediated interaction of particles in lipid membranes, mostly well-established in theoretical physics, is reviewed from a mathematical perspective. We provide mathematically consistent formulations in a…

偏微分方程分析 · 数学 2016-06-29 Charles M. Elliott , Carsten Gräser , Graham Hobbs , Ralf Kornhuber , Maren-Wanda Wolf

Using numerical simulations, we characterized the behavior of an elastic membrane immersed in an active fluid. Our findings reveal a nontrivial folding and re-expansion of the membrane that is controlled by the interplay of its resistance…

软凝聚态物质 · 物理学 2015-07-24 S. A. Mallory , C. Valeriani , A. Cacciuto

Receptor-mediated endocytosis requires that the energy of adhesion overcomes the deformation energy of the plasma membrane. The resulting driving force is balanced by dissipative forces, leading to deterministic dynamical equations. While…

亚细胞过程 · 定量生物学 2019-11-20 Felix Frey , Falko Ziebert , Ulrich S. Schwarz

Nanoparticles, such as viruses, can enter cells via endocytosis. During endocytosis, the cell surface wraps around the nanoparticle to effectively eat it. Prior focus has been on how nanoparticle size and shape impacts endocytosis. However,…

软凝聚态物质 · 物理学 2023-01-26 Sarthak Gupta , Christian D. Santangelo , Alison E. Patteson , J. M. Schwarz

Cellular uptake of nanoplastics is instrumental in their environmental accumulation and transfer to humans through the food chain. Despite extensive studies using spherical plastic nanoparticles, the influence of the morphological…

软凝聚态物质 · 物理学 2023-08-29 Xin Yong , Ke Du

Cell membranes separate the cell interior from the external environment. They are constituted by a variety of lipids; their composition determines the dynamics of membrane proteins and affects the ability of the cells to adapt. Even though…

定量方法 · 定量生物学 2018-10-04 Nicola Galvanetto

Soft colloids allow to explore high density states well beyond random close packing. An important open question is whether softness controls the dynamics under these dense conditions. While experimental works reported conflicting results,…

软凝聚态物质 · 物理学 2021-06-08 Nicoletta Gnan , Emanuela Zaccarelli

The deformation and rupture of a lipid vesicle due to the forced normal approach of an inclusion are essential for optimizing the design of magnetic giant unilamellar vesicles [magGUVs, Malik et al., Nanoscale 17, 13720 (2025)], with…

软凝聚态物质 · 物理学 2025-12-16 Yuan-Nan Young , Bryan Quaife , Herve Nganguia , On Shun Pak , Jie Feng , Howard A. Stone

Biological cells are able to generate intricate structures and respond to external stimuli, sculpting their membrane from within. Simplified biomimetic systems can aid in understanding the principles which govern these shape changes and…

The cellular uptake of self-propelled nanoparticles (NPs) or viruses, usually nonspherical, by cell membrane is crucial in many biological processes. In this study, using Onsager variational principle, we obtain a general wrapping equation…

软凝聚态物质 · 物理学 2023-01-16 Ke Xiao , Rui Ma , Chen-Xu Wu

Relatively short peptides, such as toxins and antimicrobial-peptides, are known to insert themselves into cell membranes. On the basis of simple bead-spring models for the membrane lipids, the peptide, and water, detailed processes of the…

软凝聚态物质 · 物理学 2007-05-23 Mitsuharu Okazaki , Tomoki Watanabe , Naohito Urakami , Takashi Yamamoto

Cell membranes are studded with protrusions that were thoroughly analyzed with electron microscopy. However, the nanometer-scale three-dimensional motions generated by cell membranes to fit the topography of foreign surfaces and initiate…

生物物理 · 物理学 2008-09-04 Anne Pierres , Anne-Marie Benoliel , Dominique Touchard , Pierre Bongrand

We investigate dynamics and interactions of particles levitated and trapped by the thermophoretic force in a vacuum cell. Our analysis is based on footage taken by orthogonal cameras that are able to capture the three dimensional…

软凝聚态物质 · 物理学 2017-09-26 Benjamin Foster , Frankie Fung , Connor Fieweger , Mykhaylo Usatyuk , Anita Gaj , B. J. DeSalvo , Cheng Chin

Microphase separation of membrane components is thought to play an important role in many physiological processes, from cell signaling to endocytosis and cellular trafficking. Here, we study how variations in the membrane composition can be…

亚细胞过程 · 定量生物学 2015-05-20 Pierre Sens , Matthew S. Turner

Using computer simulations we show that lipid membranes can mediate linear aggregation of spherical nanoparticles binding to it for a wide range of biologically relevant bending rigidities. This result is in net contrast with the isotropic…

软凝聚态物质 · 物理学 2012-03-20 Andela Šarić , Angelo Cacciuto

Viscosity is a key property of cell membranes that controls mobility of embedded proteins and membrane remodeling. Measuring it is challenging because existing approaches involve complex experimental designs and/or models, and the…

软凝聚态物质 · 物理学 2023-07-19 Hammad A. Faizi , Rumiana Dimova , Petia M. Vlahovska

The deformability of vesicles critically influences their engulfment by lipid membranes, a process central to endocytosis, viral entry, drug delivery, and intercellular transport. While theoretical models have long predicted this influence,…

软凝聚态物质 · 物理学 2025-07-24 Stijn van der Ham , Alexander Brown , Halim Kusumaatmaja , Hanumantha Rao Vutukuri