Spatiotemporal Kinetics of Supported Lipid Bilayer Formation on Glass via Vesicle Adsorption and Rupture
Supported lipid bilayers (SLBs) represent one of the most popular mimics of the cell membrane. Herein, we have used total internal reflection fluorescence microscopy for in-depth characterization of the vesicle-mediated SLB formation mechanism on a common silica-rich substrate, borosilicate glass. F...
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Published in | The journal of physical chemistry letters Vol. 9; no. 17; pp. 5143 - 5149 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
06.09.2018
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Online Access | Get full text |
ISSN | 1948-7185 1948-7185 |
DOI | 10.1021/acs.jpclett.8b02092 |
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Abstract | Supported lipid bilayers (SLBs) represent one of the most popular mimics of the cell membrane. Herein, we have used total internal reflection fluorescence microscopy for in-depth characterization of the vesicle-mediated SLB formation mechanism on a common silica-rich substrate, borosilicate glass. Fluorescently labeling a subset of vesicles allowed us to monitor the adsorption of individual labeled vesicles, resolve the onset of SLB formation from small seeds of SLB patches, and track their growth via SLB-edge-induced autocatalytic rupture of adsorbed vesicles. This made it possible to perform the first quantitative measurement of the SLB front velocity, which is shown to increase up to 1 order of magnitude with time. This effect can be classified as dramatic because in many other physical, chemical, or biological kinetic processes the front velocity is either constant or decreasing with time. The observation was successfully described with a theoretical model and Monte Carlo simulations implying rapid local diffusion of lipids upon vesicle rupture. |
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AbstractList | Supported lipid bilayers (SLBs) represent one of the most popular mimics of the cell membrane. Herein, we have used total internal reflection fluorescence microscopy for in-depth characterization of the vesicle-mediated SLB formation mechanism on a common silica-rich substrate, borosilicate glass. Fluorescently labeling a subset of vesicles allowed us to monitor the adsorption of individual labeled vesicles, resolve the onset of SLB formation from small seeds of SLB patches, and track their growth via SLB-edge-induced autocatalytic rupture of adsorbed vesicles. This made it possible to perform the first quantitative measurement of the SLB front velocity, which is shown to increase up to 1 order of magnitude with time. This effect can be classified as dramatic because in many other physical, chemical, or biological kinetic processes the front velocity is either constant or decreasing with time. The observation was successfully described with a theoretical model and Monte Carlo simulations implying rapid local diffusion of lipids upon vesicle rupture.Supported lipid bilayers (SLBs) represent one of the most popular mimics of the cell membrane. Herein, we have used total internal reflection fluorescence microscopy for in-depth characterization of the vesicle-mediated SLB formation mechanism on a common silica-rich substrate, borosilicate glass. Fluorescently labeling a subset of vesicles allowed us to monitor the adsorption of individual labeled vesicles, resolve the onset of SLB formation from small seeds of SLB patches, and track their growth via SLB-edge-induced autocatalytic rupture of adsorbed vesicles. This made it possible to perform the first quantitative measurement of the SLB front velocity, which is shown to increase up to 1 order of magnitude with time. This effect can be classified as dramatic because in many other physical, chemical, or biological kinetic processes the front velocity is either constant or decreasing with time. The observation was successfully described with a theoretical model and Monte Carlo simulations implying rapid local diffusion of lipids upon vesicle rupture. Supported lipid bilayers (SLBs) represent one of the most popular mimics of the cell membrane. Herein, we have used total internal reflection fluorescence microscopy for in-depth characterization of the vesicle-mediated SLB formation mechanism on a common silica-rich substrate, borosilicate glass. Fluorescently labeling a subset of vesicles allowed us to monitor the adsorption of individual labeled vesicles, resolve the onset of SLB formation from small seeds of SLB patches, and track their growth via SLB-edge-induced autocatalytic rupture of adsorbed vesicles. This made it possible to perform the first quantitative measurement of the SLB front velocity, which is shown to increase up to 1 order of magnitude with time. This effect can be classified as dramatic because in many other physical, chemical, or biological kinetic processes the front velocity is either constant or decreasing with time. The observation was successfully described with a theoretical model and Monte Carlo simulations implying rapid local diffusion of lipids upon vesicle rupture. |
Author | Höök, Fredrik Agnarsson, Björn Mapar, Mokhtar Jõemetsa, Silver Pace, Hudson Zhdanov, Vladimir P |
AuthorAffiliation | Boreskov Institute of Catalysis Russian Academy of Sciences Division of Biological Physics, Department of Physics |
AuthorAffiliation_xml | – name: Boreskov Institute of Catalysis – name: Russian Academy of Sciences – name: Division of Biological Physics, Department of Physics |
Author_xml | – sequence: 1 givenname: Mokhtar surname: Mapar fullname: Mapar, Mokhtar organization: Division of Biological Physics, Department of Physics – sequence: 2 givenname: Silver surname: Jõemetsa fullname: Jõemetsa, Silver organization: Division of Biological Physics, Department of Physics – sequence: 3 givenname: Hudson orcidid: 0000-0001-5116-2577 surname: Pace fullname: Pace, Hudson organization: Division of Biological Physics, Department of Physics – sequence: 4 givenname: Vladimir P surname: Zhdanov fullname: Zhdanov, Vladimir P organization: Russian Academy of Sciences – sequence: 5 givenname: Björn surname: Agnarsson fullname: Agnarsson, Björn organization: Division of Biological Physics, Department of Physics – sequence: 6 givenname: Fredrik orcidid: 0000-0003-1994-5015 surname: Höök fullname: Höök, Fredrik email: fredrik.hook@chalmers.se organization: Division of Biological Physics, Department of Physics |
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Title | Spatiotemporal Kinetics of Supported Lipid Bilayer Formation on Glass via Vesicle Adsorption and Rupture |
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