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Related Concept Videos

Pinching-off of Coated Vesicles01:32

Pinching-off of Coated Vesicles

Vesicle budding is orchestrated by distinct cytosolic proteins such as adaptor proteins, coat proteins, and GTPases. To initiate vesicle budding, membrane-bending proteins containing crescent-shaped BAR domains bind to the lipid heads in the bilayer and distort the membrane to form a protein-coated vesicle bud. Adaptors proteins such as AP2 for clathrin-coated vesicles can nucleate on the deformed membrane. Finally, coat proteins such as clathrin or COPI and COPII assemble into a coat forming...
Intralumenal Vesicles and Multivesicular Bodies01:38

Intralumenal Vesicles and Multivesicular Bodies

Intraluminal vesicles (ILVs) are small vesicles 50-80 nm in diameter formed during the maturation of early endosomes. A specialized endosome containing numerous ILVs is called a multivesicular body (MVB). ILVs contain internalized molecules such as antigens, nucleic acids, proteins, and metabolites. Some of these molecules are released from the MVBs inside exosomes and are transported to other cells. Other MVBs contain molecules that are retained in the ILVs and are later degraded within the...
Overview of Secretory Vesicles01:33

Overview of Secretory Vesicles

Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
SNAREs and Membrane Fusion01:43

SNAREs and Membrane Fusion

Once a transport vesicle has recognized its target organelle, the vesicular membrane needs to fuse with the target membrane to unload the cargo. Transmembrane proteins called SNAREs present on organelle membranes and their vesicles, mediate vesicle fusion.
SNAREs exist in pairs that symmetrically interact and catalyze the fusion of the lipid bilayers in vesicle and target organelle. v-SNARE in the vesicle membrane are single polypeptide chains that bind to a complementary t-SNARE, composed of 2...
Fusion of Secretory Vesicles with the Plasma Membrane01:26

Fusion of Secretory Vesicles with the Plasma Membrane

Proteins and neurotransmitters in secretory vesicles can be released from a cell upon vesicle docking, priming, and fusion with the plasma membrane. Vesicles are docked and primed in preparation for the quick exocytosis of their contents in response to a stimulus. The fusion process is mainly carried out by a SNAP Receptor or SNARE complex, consisting of synaptobrevin, syntaxin-1, and SNAP-25.
In 1993, Jim Rothman proposed that the antiparallel pairing of vesicular and transmembrane SNAREs, or...
Vesicular Tubular Clusters01:45

Vesicular Tubular Clusters

After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi.
With the help of motor proteins such...

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Related Experiment Video

Updated: Jun 8, 2026

Lipid Bilayer Vesicle Generation Using Microfluidic Jetting
08:35

Lipid Bilayer Vesicle Generation Using Microfluidic Jetting

Published on: February 21, 2014

Soft-Lubrication Drainage and Rupture in Particle-Driven Vesicles.

Yuan-Nan Young1, Bryan Quaife2, Herve Nganguia3

  • 1New Jersey Institute of Technology, Department of Mathematical Sciences, Newark, New Jersey 07102, USA.

Physical Review Letters
|June 7, 2026
PubMed
Summary
This summary is machine-generated.

A force-driven inclusion deforms lipid vesicles, creating a self-similar draining film. This elastohydrodynamic mechanism can increase membrane tension, potentially leading to vesicle rupture, and defines an operating window for delivery applications.

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Obtention of Giant Unilamellar Hybrid Vesicles by Electroformation and Measurement of their Mechanical Properties by Micropipette Aspiration
09:29

Obtention of Giant Unilamellar Hybrid Vesicles by Electroformation and Measurement of their Mechanical Properties by Micropipette Aspiration

Published on: January 19, 2020

Related Experiment Videos

Last Updated: Jun 8, 2026

Lipid Bilayer Vesicle Generation Using Microfluidic Jetting
08:35

Lipid Bilayer Vesicle Generation Using Microfluidic Jetting

Published on: February 21, 2014

Spontaneous Formation and Rearrangement of Artificial Lipid Nanotube Networks as a Bottom-Up Model for Endoplasmic Reticulum
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Spontaneous Formation and Rearrangement of Artificial Lipid Nanotube Networks as a Bottom-Up Model for Endoplasmic Reticulum

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Obtention of Giant Unilamellar Hybrid Vesicles by Electroformation and Measurement of their Mechanical Properties by Micropipette Aspiration
09:29

Obtention of Giant Unilamellar Hybrid Vesicles by Electroformation and Measurement of their Mechanical Properties by Micropipette Aspiration

Published on: January 19, 2020

Area of Science:

  • Soft matter physics
  • Biophysics
  • Fluid dynamics

Background:

  • Lipid vesicle deformation and rupture are critical for applications like magnetic giant unilamellar vesicles (GUVs).
  • Understanding active colloid-membrane interactions is key for cellular-scale chemical delivery.

Purpose of the Study:

  • To investigate the elastohydrodynamics of vesicles propelled by a force-driven rigid inclusion.
  • To reveal the mechanism of vesicle deformation and rupture under these conditions.

Main Methods:

  • Simulating vesicles propelled by a force-driven rigid inclusion.
  • Analyzing the dynamics of the thinning film between the inclusion and the vesicle membrane.
  • Evaluating the maximal tension and mapping operating windows based on vesicle reduced area and size.

Main Results:

  • A robust elastohydrodynamic mechanism was identified where the inclusion outpaces the vesicle.
  • A symmetrically and self-similarly draining film is sustained, largely independent of initial vesicle shape.
  • For soft membranes and small inclusions, monotonic tension increase can exceed lysis tension.

Conclusions:

  • The study reveals a predictable mechanism for vesicle deformation and rupture driven by inclusions.
  • An operating window for delivery applications is defined by vesicle properties and inclusion size.
  • Findings are crucial for optimizing magnetic GUV design and understanding active colloid-membrane interactions.