Lipid Envelope Disruption
Lipid Envelope Disruption - Related Videos
11:45
Imaging of HIV-1 Envelope-induced Virological Synapse and Signaling on Synthetic Lipid Bilayers
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Cited by 4 •
2012
This article describes a method to visualize formation of an HIV-1 envelope-induced virological synapse on glass supported planar bilayers by total internal reflection fluorescence (TIRF) microscopy. The method can also be combined with immunofluorescence staining to detect activation and redistribution of signaling molecules that occur during HIV-1 envelope-induced virological synapse formation.
01:18
Outer Layers of the Cell Envelope
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2025
The outermost layers of prokaryotic cells play a critical role in their survival, virulence, and interaction with the environment. These layers, often composed of polysaccharides, polypeptides, or proteins, form protective and adhesive structures that vary in organization and function.Capsules and Slime LayersCapsules are highly organized, tightly bound layers that firmly attach to the bacterial cell wall. Capsules are usually made of polysaccharides, though some are made of polypeptides. These...
07:10
Conformational Evaluation of HIV-1 Trimeric Envelope Glycoproteins Using a Cell-based ELISA Assay
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Cited by 40 •
2014
Understanding viral surface antigens conformations is required to evaluate antibody neutralization and guide the design of effective vaccine immunogens. Here we describe a cell-based ELISA assay that allows the study of the recognition of trimeric HIV-1 Env expressed at the surface of transfected cells by specific anti-Env antibodies.
09:02
Validation of a Mouse Model to Disrupt LINC Complexes in a Cell-specific Manner
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Cited by 13 •
2015
Nuclear envelope proteins play a central role in many basic biological processes and have been implicated in a variety of human diseases. This protocol describes a new Cre/Lox-based mouse model that allows for the spatiotemporal control of LINC complexes disruption.
14:59
Determination of Total Lipid and Lipid Classes in Marine Samples
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Cited by 3 •
2021
This protocol is for the determination of lipids in seawater and biological specimens. Lipids in filtrates are extracted with chloroform or mixtures of chloroform and methanol in the case of solids. Lipid classes are measured by rod thin-layer chromatography with flame ionization detection and their sum gives the total lipid content.
FAQs
Detergents disturb the interactions that hold phospholipids and membrane proteins in an organized bilayer. As this organization weakens, the envelope can become permeable, fragment, or lose its original structure. The resulting leakage or disassembly is useful when researchers need to examine membrane-associated components separately or assess how structural disruption affects an enveloped virus.
Temperature and pH changes can weaken the interactions responsible for maintaining membrane organization, but their effects depend on the envelope and the surrounding conditions. A sufficiently disruptive shift may produce leakage, fragmentation, or loss of membrane structure. Studying these responses helps researchers evaluate envelope stability and understand how environmental conditions influence membrane-bound biological systems.
Solvents can disturb the chemical interactions among membrane lipids and proteins, while physical forces can damage or separate the envelope’s organized structure. These mechanisms may produce different degrees of leakage or fragmentation rather than a single uniform outcome. Comparing them allows biological studies to distinguish chemical destabilization from mechanically induced loss of envelope integrity.
For enveloped viruses, damage to the lipid boundary can compromise structural integrity and contribute to inactivation. This makes disruption relevant to antiviral research, where investigators examine how envelope stability relates to viral function. It also provides a way to study envelope-associated components and to evaluate conditions that alter the organization required for an intact viral particle.
Researchers should select and control the disruptive condition, such as a detergent, solvent, temperature change, pH change, or physical force, according to the intended outcome. The degree of treatment determines whether the sample experiences limited leakage, fragmentation, or broader loss of organization. Careful control helps release membrane-associated components while preserving the information needed for analysis.
Controlled disruption supports research that examines how enveloped viruses respond when their lipid boundary is destabilized. In antiviral studies, it helps investigate envelope vulnerability and inactivation. In vaccine development, the process can contribute to examining viral envelope components and their organization. These applications connect membrane stability with the design and evaluation of biological interventions.
The resulting leakage, fragmentation, or release of membrane-associated components can reveal how phospholipids and membrane proteins contribute to envelope stability. Researchers can use these outcomes to study membrane structure, transport, and responses to chemical, environmental, or physical stress. In biology, the approach therefore links changes in membrane organization with measurable effects on function and composition.