scholarly journals Young modulus of supported lipid membranes containing milk sphingomyelin in the gel, fluid or liquid-ordered phase, determined using AFM force spectroscopy

2019 ◽  
Vol 1861 (9) ◽  
pp. 1523-1532 ◽  
Author(s):  
Oumaima Et-Thakafy ◽  
Fanny Guyomarc'h ◽  
Christelle Lopez
Keyword(s):  
Lipid Membranes ◽  
Force Spectroscopy ◽  
Young Modulus ◽  
Liquid Ordered ◽  
Supported Lipid Membranes

Force spectroscopy as a tool to investigate the properties of supported lipid membranes

2010 ◽  
Vol 73 (10) ◽  
pp. 965-972 ◽  
Author(s):  
C. Canale ◽  
M. Jacono ◽  
A. Diaspro ◽  
S. Dante
Keyword(s):  
Lipid Membranes ◽  
Force Spectroscopy ◽  
Supported Lipid Membranes

Simulation Modeling of Supported Lipid Membranes – A Review

2014 ◽  
Vol 14 (5) ◽  
pp. 617-623 ◽  
Author(s):  
Michael Hirtz ◽  
Naresh Kumar ◽  
Lifeng Chi
Keyword(s):  
Lipid Membranes ◽  
Simulation Modeling ◽  
Supported Lipid Membranes

scholarly journals Electrochemical Properties of Lipid Membranes Self-Assembled from Bicelles

Membranes ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 11
Author(s):  
Damian Dziubak ◽  
Kamil Strzelak ◽  
Slawomir Sek
Keyword(s):  
Electrochemical Properties ◽  
Self Assembly ◽  
Lipid Membranes ◽  
Lipid Membrane ◽  
Membrane Resistance ◽  
Electrochemical Characteristics ◽  
Freeze Thaw ◽  
Lipid Films ◽  
Supported Lipid Membranes

Supported lipid membranes are widely used platforms which serve as simplified models of cell membranes. Among numerous methods used for preparation of planar lipid films, self-assembly of bicelles appears to be promising strategy. Therefore, in this paper we have examined the mechanism of formation and the electrochemical properties of lipid films deposited onto thioglucose-modified gold electrodes from bicellar mixtures. It was found that adsorption of the bicelles occurs by replacement of interfacial water and it leads to formation of a double bilayer structure on the electrode surface. The resulting lipid assembly contains numerous defects and pinholes which affect the permeability of the membrane for ions and water. Significant improvement in morphology and electrochemical characteristics is achieved upon freeze–thaw treatment of the deposited membrane. The lipid assembly is rearranged to single bilayer configuration with locally occurring patches of the second bilayer, and the number of pinholes is substantially decreased. Electrochemical characterization of the lipid membrane after freeze–thaw treatment demonstrated that its permeability for ions and water is significantly reduced, which was manifested by the relatively high value of the membrane resistance.

Specific Capacitance of Metal Supported Lipid Membranes

1998 ◽  
Vol 10 (5) ◽  
pp. 295-302 ◽  
Author(s):  
Victor I. Passechnik ◽  
Tibor Hianik ◽  
Sergey A. Ivanov ◽  
Branislav Sivak
Keyword(s):  
Specific Capacitance ◽  
Lipid Membranes ◽  
Supported Lipid Membranes

scholarly journals Cholesterol provides nonsacrificial protection of membrane lipids from chemical damage at air–water interface

2018 ◽  
Vol 115 (13) ◽  
pp. 3255-3260 ◽  
Author(s):  
Xinxing Zhang ◽  
Kevin M. Barraza ◽  
J. L. Beauchamp
Keyword(s):  
Lipid Membranes ◽  
Membrane Lipids ◽  
Oh Radicals ◽  
Significant Finding ◽  
Water Interface ◽  
Unsaturated Lipids ◽  
Air Water Interface ◽  
Liquid Ordered ◽  
Ester Linkage

The role of cholesterol in bilayer and monolayer lipid membranes has been of great interest. On the biophysical front, cholesterol significantly increases the order of the lipid packing, lowers the membrane permeability, and maintains membrane fluidity by forming liquid-ordered–phase lipid rafts. However, direct observation of any influence on membrane chemistry related to these cholesterol-induced physical properties has been absent. Here we report that the addition of 30 mol % cholesterol to 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) or 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-(1′-rac-glycerol) (POPG) monolayers at the air–water interface greatly reduces the oxidation and ester linkage cleavage chemistries initiated by potent chemicals such as OH radicals and HCl vapor, respectively. These results shed light on the indispensable chemoprotective function of cholesterol in lipid membranes. Another significant finding is that OH oxidation of unsaturated lipids generates Criegee intermediate, which is an important radical involved in many atmospheric processes.

TiO2 nanoparticle interactions with supported lipid membranes – an example of removal of membrane patches

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91102-91110 ◽  
Author(s):  
Fang Zhao ◽  
Jenny Perez Holmberg ◽  
Zareen Abbas ◽  
Rickard Frost ◽  
Tora Sirkka ◽  
...  
Keyword(s):  
Lipid Membranes ◽  
Biological Systems ◽  
Tio2 Nanoparticle ◽  
Engineered Nanoparticles ◽  
Model Systems ◽  
Structure Activity ◽  
Nanoparticle Interactions ◽  
Nanoparticle Structure ◽  
Supported Lipid Membranes ◽  
Different Levels

Different levels of model systems are needed for effect studies of engineered nanoparticles and the development of nanoparticle structure–activity relationships in biological systems.

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