Matrix Vesicles
Matrix Vesicles - Related Videos
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...
04:13
Extracellular Vesicle Extraction: A Technique to Isolate Extracellular Vesicles from Whole Tissue Specimens Using Differential Centrifugation
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2023
This video describes the technique of extracting extracellular vesicles from fresh or frozen tissues. The isolated extracellular vesicles can be used for further analysis to uncover their significant roles in disease pathogenesis.
03:37
SEC-based Isolation of Microglia-derived Extracellular Vesicles: A Technique to Isolate Extracellular Vesicles from Microglia Conditioned Culture Media
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2023
This video describes a method based on size-exclusion chromatography (SEC) to isolate extracellular vesicles or EVs derived from the brain immune cells―the microglia. The EVs act as molecular cargo to deliver mediators, which regulate an immune response. Therefore, the isolated EVs can be used as an in vitro model to study the microglia-neuron crosstalk during a neuronal immune response.
04:51
Size Exclusion Chromatography Based Separation of Bacterial Extracellular Vesicles: A Technique to Separate Heterogenous Population of Gram-Negative Bacterial Outer Membrane Vesicles Based on Their Size
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2025
In this video, we demonstrate a technique–size exclusion chromatography–to separate a heterogenous population of outer membrane vesicles or OMVs derived from bacteria. These vesicles are nanosized spherical structures and are separated into large and small subpopulations based on their size through Size Exclusion Chromatography.
06:26
Pulling Membrane Nanotubes from Giant Unilamellar Vesicles
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Cited by 42 •
2017
Many proteins in the cell sense and induce membrane curvature. We describe a method to pull membrane nanotubes from lipid vesicles to study the interaction of proteins or any curvature-active molecule with curved membranes in vitro.
FAQs
The lipid membrane acts as a concentrating interface, bringing calcium and phosphate into the vesicle. Associated proteins and enzymes, including phosphatases, further create conditions that favor hydroxyapatite crystal formation. This arrangement links membrane composition and enzymatic activity to the earliest mineralization events, helping explain how a vesicle can organize mineral formation before crystals extend into the surrounding matrix.
Intravesicular crystal formation provides an initial mineral phase that can grow beyond the vesicle into the extracellular matrix. This progression connects a confined, membrane-associated event with broader matrix mineralization. Examining where crystals form and how they extend helps researchers analyze the transition from mineral initiation to development of a mineralized tissue structure.
Their mineralization activity provides a framework for studying how bone and cartilage develop, while the same research context can be applied to pathological calcification. Comparing these settings helps investigators identify how vesicle-associated mineral formation relates to tissue formation and to unwanted mineral deposition, without treating all calcification as biologically equivalent.
Investigators can isolate these vesicles from mineralizing tissues or from cultured mineralizing cells. Tissue-derived material reflects vesicles present in an established biological matrix, whereas cultured cells provide a laboratory source associated with mineralizing cell behavior. Selecting between these sources allows studies to examine vesicles in tissue context or under controlled culture conditions.
These methods provide complementary ways to investigate isolated vesicles. Microscopy supports direct examination, biochemical assays assess associated biochemical properties, and molecular analyses examine molecular components or signals. Using more than one approach gives a broader characterization than relying on a single measurement, which is important when linking vesicle composition with mineralization activity.
Their ability to organize mineral formation makes them relevant to the design of biomaterials intended for tissue engineering. Findings from bone and cartilage studies can inform how engineered materials support or reproduce aspects of mineralization. This application connects basic vesicle research with efforts to develop materials that better reflect biological tissue-forming processes.