Lipid Film Rehydration

Lipid film rehydration is a method for forming lipid vesicles, including liposomes, by drying lipids into a thin film and exposing them to an aqueous solution. During rehydration, water penetrates and swells the lipid layer, while amphiphilic molecules self-assemble into bilayer membranes, often forming vesicles when hydration occurs above the lipids’ transition temperature. In bioengineering, this technique supports the preparation of model cell membranes, drug-delivery carriers, and systems for encapsulating biological molecules. Vesicle size, lamellarity, and encapsulation efficiency can be adjusted through lipid composition, hydration conditions, and subsequent processing such as extrusion or sonication.

Lipid Film Rehydration - Related Videos

Research

JoVE Journal - Bioengineering

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.

Research

JoVE Journal - Bioengineering
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Forming Giant-sized Polymersomes Using Gel-assisted Rehydration

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Cited by 5 •

2016

We present a protocol to rapidly form giant polymer vesicles (pGVs). Briefly, polymer solutions are dehydrated on dried agarose films adhered to coverslips. Rehydration of the polymer films results in rapid formation of pGVs. This method greatly advances the preparation of synthetic giant vesicles for direct applications in biomimetic studies.

Deparaffinization and Rehydration of Tissue Sections: A Two-step Procedure to Remove Paraffin Wax from FFPE Tissue Slides Followed by Tissue Rehydration

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2023

In this video, we demonstrate the processing of FFPE or formalin-fixed paraffin-embedded sections obtained from gastrointestinal tumor tissue. The deparaffinization and rehydration steps allow the processing of the tissue specimen for subsequent analytical applications.

Education

JoVE Science Education - Engineering

Electroplating of Thin Films

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2023

Source: Logan G. Kiefer, Andrew R. Falkowski, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Electroplating is a process that uses electric current to reduce dissolved metal cations so that they form a thin coating on an electrode. Other thin film deposition techniques include chemical vapor deposition (CVD), spin coating, dip coating, and sputter deposition among others. CVD uses a gas-phase precursor of the element to be...

Structure of Lipids

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2020

Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic birds and...

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