Intraluminal Vesicles
Intraluminal Vesicles - Related Videos
06:20
Imaging Leukocyte Adhesion to the Vascular Endothelium at High Intraluminal Pressure
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Cited by 22 •
2011
This is a method to visualise leukocyte adhesion to the endothelium in harvested pressurised vessels. The technique enables studying vascular adhesion under shear flow with differing intraluminal pressures up to 200 mmHg thus mimic-ing the pathophysiological conditions of high blood pressure.
05:53
Intraluminal Drug Delivery to the Mouse Arteriovenous Fistula Endothelium
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Cited by 5 •
2016
After puncturing the aorta through the inferior vena cava (IVC) to create an aorto-caval fistula in the mouse, solution containing a drug is infused into the IVC via the same needle, followed by incubation. This method enables more robust drug delivery to the venous endothelium compared to the external route.
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...
15:01
Tracking Neutrophil Intraluminal Crawling, Transendothelial Migration and Chemotaxis in Tissue by Intravital Video Microscopy
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Cited by 21 •
2011
We describe a protocol of brightfield intravital microscopy for measuring dynamic neutrophil-endothelial cell interactions during neutrophil recruitment in response to the source of a neutrophil chemoattractant in vivo. Neutrophil intraluminal crawling, transendothelial migration and chemotaxis in mouse cremaster muscle tissue are visualized with time-lapsed video photography and tracked with ImageJ.
09:40
Mouse Model of Intraluminal MCAO: Cerebral Infarct Evaluation by Cresyl Violet Staining
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Cited by 97 •
2012
The intraluminal middle cerebral occlusion model in mice is herein presented. The extent of cerebral infarct is evaluated by a neurologic score and cresyl violet staining, an alternative staining to TTC, offering the great advantage to test in parallel many interest markers.
FAQs
Cargo selection is central because inward budding does not simply remove membrane proteins; it encloses selected molecules within the endosomal lumen. This creates a compartment where those molecules can be retained, routed, or removed separately from components remaining on the limiting membrane. In biology, this sorting principle helps explain how cells regulate membrane protein distribution and control cargo access to later trafficking destinations.
The inward budding step establishes a physical separation between selected cargo and the endosomal membrane surface. When the bud pinches off, cargo becomes enclosed within the endosome rather than remaining exposed on its limiting membrane. This organization allows cells to package membrane proteins and other molecules for distinct intracellular fates, making membrane remodeling essential to controlled endosomal sorting.
A multivesicular body can direct its enclosed cargo toward degradation or release, depending on which compartment it fuses with. Fusion with a lysosome sends the contents into a degradative pathway, whereas fusion with the plasma membrane releases the vesicles as exosomes. These alternative destinations allow the same sorting system to support either intracellular waste removal or extracellular communication.
They provide the cellular source of exosomes released when multivesicular bodies fuse with the plasma membrane. Studying this connection links an intracellular sorting event with the appearance of vesicles outside the cell. It therefore helps biology researchers examine how selected membrane proteins and other cargo can move from endosomal compartments into extracellular vesicle populations.
These pathways offer a framework for examining intracellular trafficking, signaling, and waste removal together. Cargo may be stored within endosomal compartments, routed toward degradation, or delivered for release outside the cell. Because the vesicles participate in these different outcomes, their biology helps researchers connect membrane organization with how cells regulate and redistribute molecular cargo.
Their formation and fate provide a context for investigating how cells sort, retain, degrade, or release molecular cargo. This is especially relevant to extracellular vesicle studies, because plasma membrane fusion can produce exosomes containing selected material. Examining these pathways can therefore connect intracellular trafficking and extracellular signaling with broader questions about cellular function in health and disease.