Vesicle Rupture
Vesicle Rupture - Related Videos
05:16
A Photodynamic Approach to Study Function of Intracellular Vesicle Rupture
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2023
AlPcS2a-mediated chromophore-assisted laser inactivation (CALI) is a powerful tool for studying spatiotemporal damage of intracellular vesicles (IVs) in live cells.
08:36
FM Dyes in Vesicle Recycling
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2023
FM dyes are a class of fluorescent molecules that has found important use in studying the vesicle recycling process. By virtue of a chemical structure, these molecules can insert themselves into the outer leaflet of phospholipid bilayer membranes. After membrane insertion, they are internalized into the cell via endocytosed vesicles, and released when these vesicles recycle back to the membrane. Since, these dyes fluoresce strongly in the hydrophobic environment within membranes and weakly in...
10:39
Single Cell Measurements of Vacuolar Rupture Caused by Intracellular Pathogens
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Cited by 22 •
2013
We describe a method for tracking the endomembrane rupture elicited by the intracellular bacteria Shigella flexneri and Mycobacterium tuberculosis upon host cell invasion. Our assay makes use of CCF4, a host cytoplasmic FRET probe in live or fixed cells. This reporter is degraded by an enzyme activity present on the bacterial surface.
08:35
Examining BCL-2 Family Function with Large Unilamellar Vesicles
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Cited by 24 •
2012
Biochemically-defined large unilamellar vesicles (LUVs) are a convenient model system to analyze BCL-2 family interactions with immediate implications in better understanding the mitochondrial pathway of apoptosis. A method to produce LUVs, along with standard BCL-2 family protein combinations and controls to examine LUV permeabilization, are presented.
08:55
Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis
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Cited by 9 •
2018
We report methods for characterization of MLKL-mediated plasma membrane rupture in necroptosis including conventional and confocal live-cell microscopy imaging, scanning electron microscopy, and NMR-based lipid binding.
FAQs
Rupture begins when forces applied to a vesicle destabilize its lipid bilayer and exceed the membrane tension that holds the compartment together. Mechanical stress, osmotic imbalance, detergents, temperature, pH, and surface interactions can shift this balance. Controlling these variables helps researchers promote disruption when release or membrane exposure is required.
Each condition challenges the bilayer through a different type of perturbation. Osmotic imbalance changes the physical stress on the compartment, detergents destabilize lipid organization, and temperature or pH changes can alter membrane stability. Surface interactions add another pathway by affecting how vesicles contact solid materials, producing outcomes relevant to membrane preparation and analysis.
These processes are connected because all reveal how lipid bilayers respond to stress and interactions. Permeability concerns the movement of material across a membrane, whereas rupture disrupts the compartment more extensively. Fusion represents another membrane behavior studied alongside rupture. Comparing them helps explain membrane stability, transport, and the conditions that control lipid-bound structures.
The main variables are the type and intensity of applied stress, osmotic conditions, detergent exposure, temperature, pH, and contact with surfaces. Their combined effects determine whether a vesicle remains intact, becomes destabilized, or releases its contents. Careful control is important when experiments aim for reproducible cargo analysis or defined membrane exposure.
A general workflow begins by selecting the relevant lipid-bound compartment and the intended outcome, such as cargo release or membrane exposure. Researchers then apply a chosen destabilizing condition, including mechanical, chemical, environmental, or surface-based stress, and examine the resulting material. The observed release or exposed membrane components can guide subsequent sample analysis or preparation.
When vesicles interact with a solid substrate, controlled disruption can place their lipid or protein components onto that surface. This creates a route for preparing membrane samples rather than analyzing only intact compartments. The approach is relevant to experiments involving membrane organization, surface-associated measurements, and the incorporation of biological components into substrate-based systems.
Analyzing material released from disrupted vesicles can provide information about their cargo, while examining the remaining or exposed membrane components supports membrane characterization. In biological techniques, these outcomes help connect vesicle composition with membrane stability and behavior. Such analyses are relevant to membrane biophysics, cargo studies, and the design of systems involving transport or delivery.
Controlled disruption provides a way to study or use both vesicle cargo and membrane components. In drug delivery research, this supports investigation of how lipid-bound compartments release their contents. In biosensor development, exposed or substrate-associated membrane material can contribute to membrane-based sensing systems. These applications also depend on understanding stability, permeability, and transport.