Membrane Pore Formation
Membrane Pore Formation - Related Videos
07:07
Creating Transient Cell Membrane Pores Using a Standard Inkjet Printer
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Cited by 23 •
2012
A description of the methods used to convert an HP DeskJet 500 printer into a bioprinter. The printer is capable of processing living cells, which causes transient pores in the membrane. These pores can be utilized to incorporate small molecules, including fluorescent G-actin, into the printed cells.
08:23
Automated Lipid Bilayer Membrane Formation Using a Polydimethylsiloxane Thin Film
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Cited by 4 •
2016
We demonstrate a storable, transportable lipid bilayer formation system. A lipid bilayer membrane can be formed within 1 hr with over 80% success rate when a frozen membrane precursor is brought to ambient temperature. This system will reduce laborious processes and expertise associated with ion channels.
06:58
Quantification of Membrane Ruffle Formation Using Scanning Electron Microscopy
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2025
This video demonstrates sample preparation, fixation, and imaging of a macrophage cell that displays membrane ruffles using scanning electron microscopy, SEM. Detailed information about membrane morphology and organization is crucial for understanding the physiological condition of the cells.
00:59
Mechanisms of Membrane Domain Formation
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2023
Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains. Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...
12:19
Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
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Cited by 4 •
2013
In this video, we will demonstrate modification techniques for porous metallic implants to improve their functionality and to control cell migration. Techniques include development of pore gradients to control cell movement in 3D and production of basement membrane mimics to control cell movement in 2-D. Also, a HPLC-based method for monitoring implant integration in-vivo via analysis of blood proteins is described.
FAQs
Pore size, lifetime, and stability govern which substances can cross and how long the altered permeability persists. These properties distinguish limited ion passage from movement of larger molecules or proteins and help determine whether the membrane remains functionally altered. Controlling them is therefore central to achieving either targeted transport or broader permeabilization in experimental systems.
Protein-mediated openings arise when pore-forming proteins oligomerize, meaning several protein molecules assemble, and insert into the lipid bilayer. Electric-field methods instead temporarily reorganize membrane lipids without relying on protein insertion. The two approaches therefore alter permeability through different physical mechanisms, giving researchers distinct ways to study transport, membrane disruption, or molecular delivery.
Stability determines whether altered permeability persists long enough to produce measurable transport or membrane disruption. A stable opening can maintain movement of ions, molecules, or proteins, whereas a temporary change may provide a limited transport window. Comparing these outcomes helps researchers connect membrane structure with function and distinguish controlled permeabilization from membrane damage.
Control depends on selecting the pore-forming approach and regulating the resulting pore size, lifetime, and stability. Researchers can use protein oligomerization and insertion or apply electric fields that temporarily reorganize lipids, then evaluate the resulting permeability. This framework supports experimental designs that target delivery, lysis, translocation, or analysis of membrane behavior.
Membrane pore formation is useful when researchers need to increase permeability deliberately. In cell lysis, openings help disrupt the membrane and release cellular contents. For molecular delivery, they provide a route for selected ions, molecules, or proteins to cross. The desired application determines whether researchers emphasize temporary permeability or more persistent membrane alteration.
The resulting movement of ions, molecules, or proteins reveals how membrane permeability changes under defined conditions. Researchers can use these transport outcomes to analyze membrane function and compare the effects of different pore properties. Because pore behavior also reflects membrane disruption, the method can help distinguish functional transport from damage-related changes.
Pore formation provides a framework for examining how membrane damage and altered permeability affect cells during host-pathogen interactions. It also informs strategies for targeted therapeutic delivery by identifying ways to create openings that permit transport across cell or organelle membranes. In biological techniques, these applications connect membrane-level mechanisms with broader experimental and therapeutic goals.