Bibliografías temáticas / Lipid membranes, mechanical properties, atomic force microscopy, scattering

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Literatura académica sobre el tema "Lipid membranes, mechanical properties, atomic force microscopy, scattering"

Autor: Grafiati

Publicado: 10 de marzo de 2023

Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Lipid membranes, mechanical properties, atomic force microscopy, scattering"

Domingues, Marco M., Bárbara Gomes, Axel Hollmann, and Nuno C. Santos. "25-Hydroxycholesterol Effect on Membrane Structure and Mechanical Properties." International Journal of Molecular Sciences 22, no. 5 (2021): 2574. http://dx.doi.org/10.3390/ijms22052574.

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Cholesterol is responsible for the plasticity of plasma membranes and is involved in physiological and pathophysiological responses. Cholesterol homeostasis is regulated by oxysterols, such as 25-hydroxycholesterol. The presence of 25-hydroxycholesterol at the membrane level has been shown to interfere with several viruses’ entry into their target cells. We used atomic force microscopy to assess the effect of 25-hydroxycholesterol on different properties of supported lipid bilayers with controlled lipid compositions. In particular, we showed that 25-hydroxycholesterol inhibits the lipid-conden

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Cosentino, Katia, Edward Hermann, Nicolai von Kügelgen, Joseph D. Unsay, Uris Ros, and Ana J. García-Sáez. "Force Mapping Study of Actinoporin Effect in Membranes Presenting Phase Domains." Toxins 13, no. 9 (2021): 669. http://dx.doi.org/10.3390/toxins13090669.

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Equinatoxin II (EqtII) and Fragaceatoxin C (FraC) are pore-forming toxins (PFTs) from the actinoporin family that have enhanced membrane affinity in the presence of sphingomyelin (SM) and phase coexistence in the membrane. However, little is known about the effect of these proteins on the nanoscopic properties of membrane domains. Here, we used combined confocal microscopy and force mapping by atomic force microscopy to study the effect of EqtII and FraC on the organization of phase-separated phosphatidylcholine/SM/cholesterol membranes. To this aim, we developed a fast, high-throughput proces

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Sadžak, Anja, Janez Mravljak, Nadica Maltar-Strmečki, et al. "The Structural Integrity of the Model Lipid Membrane during Induced Lipid Peroxidation: The Role of Flavonols in the Inhibition of Lipid Peroxidation." Antioxidants 9, no. 5 (2020): 430. http://dx.doi.org/10.3390/antiox9050430.

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The structural integrity, elasticity, and fluidity of lipid membranes are critical for cellular activities such as communication between cells, exocytosis, and endocytosis. Unsaturated lipids, the main components of biological membranes, are particularly susceptible to the oxidative attack of reactive oxygen species. The peroxidation of unsaturated lipids, in our case 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), induces the structural reorganization of the membrane. We have employed a multi-technique approach to analyze typical properties of lipid bilayers, i.e., roughness, thickness, elas

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Efremov, Yuri M., Liubov Shimolina, Alexander Gulin, et al. "Correlation of Plasma Membrane Microviscosity and Cell Stiffness Revealed via Fluorescence-Lifetime Imaging and Atomic Force Microscopy." Cells 12, no. 21 (2023): 2583. http://dx.doi.org/10.3390/cells12212583.

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The biophysical properties of cells described at the level of whole cells or their membranes have many consequences for their biological behavior. However, our understanding of the relationships between mechanical parameters at the level of cell (stiffness, viscoelasticity) and at the level of the plasma membrane (fluidity) remains quite limited, especially in the context of pathologies, such as cancer. Here, we investigated the correlations between cells’ stiffness and viscoelastic parameters, mainly determined via the actin cortex, and plasma membrane microviscosity, mainly determined via it

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Basu, Amrita, Pabitra Maity, Prasanta Karmakar, and Sanat Karmakar. "Preparation of Giant Unilamellar Vesicles and Solid Supported Bilayer from Large Unilamellar Vesicles: Model Biological Membranes." Journal of Surface Science and Technology 32, no. 3-4 (2017): 85. http://dx.doi.org/10.18311/jsst/2016/7753.

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Giant Unilamellar Vesicles (GUV) and supported planar membranes are excellent model biological systems for studying the structure and functions of membranes. We have prepared GUV from Large Unilamellar Vesicles (LUV) using electroformation and Supported planar Lipid Bilayer (SLB) by vesicle fusion method. LUV was prepared using an extrusion method and was characterized using Dynamic Light Scattering (DLS) and zeta potential measurements. The techniques for obtaining GUV as well as SLB from LUV have been demonstrated. We have directly observed the formation of GUV under phase contrast microscop

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Sumarokova, Maria, Rais Pavlov, Tatiana Lavushchenko, et al. "SARS-CoV-2 FP1 Destabilizes Lipid Membranes and Facilitates Pore Formation." International Journal of Molecular Sciences 26, no. 2 (2025): 686. https://doi.org/10.3390/ijms26020686.

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SARS-CoV-2 viral entry requires membrane fusion, which is facilitated by the fusion peptides within its spike protein. These predominantly hydrophobic peptides insert into target membranes; however, their precise mechanistic role in membrane fusion remains incompletely understood. Here, we investigate how FP1 (SFIEDLLFNKVTLADAGFIK), the N-terminal fusion peptide, modulates membrane stability and barrier function across various model membrane systems. Through a complementary suite of biophysical techniques—including electrophysiology, fluorescence spectroscopy, and atomic force microscopy—we de

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Blessing, Bailey, Cory Trout, Abneris Morales, et al. "The Impact of Composition and Morphology on Ionic Conductivity of Silk/Cellulose Bio-Composites Fabricated from Ionic Liquid and Varying Percentages of Coagulation Agents." International Journal of Molecular Sciences 21, no. 13 (2020): 4695. http://dx.doi.org/10.3390/ijms21134695.

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Blended biocomposites created from the electrostatic and hydrophobic interactions between polysaccharides and structural proteins exhibit useful and unique properties. However, engineering these biopolymers into applicable forms is challenging due to the coupling of the material’s physicochemical properties to its morphology, and the undertaking that comes with controlling this. In this particular study, numerous properties of the Bombyx mori silk and microcrystalline cellulose biocomposites blended using ionic liquid and regenerated with various coagulation agents were investigated. Specifica

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Lee, Dongjun, Daeun Kim, Seungbin Kim, and Insung Bae. "Cellulose-Based Crosslinked and Reinforced Sulfonated Poly(ether ether ketone) Membranes for Robust Proton Exchange Membranes in Fuel Cells." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2924. https://doi.org/10.1149/ma2024-02432924mtgabs.

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Proton exchange membrane fuel cells (PEMFCs) are a promising clean energy solution due to their high efficiency and eco-friendly operation. Central to their function is the proton exchange membrane (PEM), typically composed of perfluorosulfonic acid (PFSA) ionomers like Nafion and Aquivion. However, challenges such as cost, gas crossover, and limited temperature range persist. To address these, researchers explore hydrocarbon (HC)-based polymers like sulfonated poly(ether ether ketone) (SPEEK), prized for cost-effectiveness and stability. However, HC-based polymers suffer from issues like unst

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Holmbäck, Jan, Vibhu Rinwa, Tobias Halthur, Puneet Rinwa, Anders Carlsson, and Bengt Herslöf. "AKVANO®: A Novel Lipid Formulation System for Topical Drug Delivery—In Vitro Studies." Pharmaceutics 14, no. 4 (2022): 794. http://dx.doi.org/10.3390/pharmaceutics14040794.

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A novel formulation technology called AKVANO® has been developed with the aim to provide a tuneable and versatile drug delivery system for topical administration. The vehicle is based on a water-free lipid formulation where selected lipids, mainly phospholipids rich in phosphatidylcholine, are dissolved in a volatile solvent, such as ethanol. With the aim of describing the basic properties of the system, the following physicochemical methods were used: viscometry, dynamic light scattering, NMR diffusometry, and atomic force microscopy. AKVANO formulations are non-viscous, with virtually no or

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Zhou, Jun, Xiaoqing Cao, Linlin Li, Xingcheng Cui, and Yu Fu. "A Novel Strategy for Fabricating a Strong Nanoparticle Monolayer and Its Enhanced Mechanism." Nanomaterials 9, no. 10 (2019): 1468. http://dx.doi.org/10.3390/nano9101468.

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This work presents the preparation of cross-linking Au nanoparticle (NP) monolayer membranes by the thiol exchange reaction and their enhanced mechanical properties. Dithiol molecules were used as a cross-linking mediator to connect the adjacent nanoparticles by replacing the original alkanethiol ligand in the monolayer. After cross-linking, the membrane integrity was maintained and no significant fracture was observed, which is crucial for the membrane serving as a nanodevice. TEM (Transmission Electron Microscopy), UV–Vis absorption spectrum, and GISAXS (grazing incidence small angle X-ray s

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Tesis sobre el tema "Lipid membranes, mechanical properties, atomic force microscopy, scattering"

Baiti, Risa Nurin. "Characterization of nano-mechanical properties of biological lipid membranes with circular mode atomic force microscopy." Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2403/document.

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Les membranes cellulaires sont impliquées dans de nombreux processus cellulaires : la diffusion des médicaments et des ions, la transduction des signaux, la génération d'énergie, le développement cellulaire (fusion et fission). Les bicouches phospholipides sont les principaux composants des membranes cellulaires, elles constituent une barrière dynamique protégeant les réactions biochimiques cellulaires. La détermination des propriétés biochimiques et mécaniques des bicouches lipidiques et leur évolution avec les conditions environnementales est nécessaire pour étudier la nature des processus c

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berti, debora, costanza montis, lucrezia caselli, and jacopo cardellini. "Probing the nanomechanical properties of lamellar and nonlamellar lipid membranes." Doctoral thesis, 2022. http://hdl.handle.net/2158/1262270.

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The thesis deals with the study of the mechanical properties of lamellar and nonlamellar lipid membranes. Techniques such as Atomic Force Microscopy and Neutron/X-Ray scattering will be employed to assess the mechanics and structural stability of multiple different lipid assemblies.

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Actas de conferencias sobre el tema "Lipid membranes, mechanical properties, atomic force microscopy, scattering"

Shamitko-Klingensmith, Nicole, Kelley M. Wambaugh, Kathleen A. Burke, George J. Magnone, and Justin Legleiter. "Correlation of Atomic Force Microscopy Tapping Forces to Mechanical Properties of Lipid Membranes." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70233.

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There is considerable interest in measuring, with nanoscale spatial resolution, the physical properties of lipid membranes because of their role in the physiology of living systems. Due to its ability to nondestructively image surfaces in solution, tapping mode atomic force microscopy (TMAFM) has proven to be a useful technique for imaging lipid membranes. However, further information concerning the mechanical properties of surfaces is contained within the time-resolved tip/sample force interactions. The tapping forces can be recovered by taking the second derivative of the cantilever deflecti

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