Gelma Hydrogel
Gelma Hydrogel - Related Videos
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2023
Collagen is another widely used biomaterial that has found popularity in commercial applications, such as photography. Collagen has more recently been used in tissue engineering applications, by creating hydrogels that provide structure to engineered tissue. This video introduces collagen as a biomaterial, demonstrates how it is harvested from porcine skin, and shows how the material is used to create a hydrogel for tissue engineering applications. Finally, several applications of the material...
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Source: Amber N. Barron, Ashlea Patterson, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Hydrogels are a versatile class of cross-linked polymers produced through relatively simple procedures and with generally inexpensive materials. They can be formed from solution and involve a polymer backbone formed from monomer reagents, an initiator which makes the polymer reactive and a crosslinking species which binds the polymer chains...
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Cited by 3 •
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Förster resonance energy transfer (FRET) imaging is a powerful tool for real-time cell biology studies. Here a method for FRET imaging cells in physiologic three-dimensional (3D) hydrogel microenvironments using conventional epifluorescence microscopy is presented. An analysis for ratiometric FRET probes that yields linear ratios over the activation range is described.
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Mechanical Stimulation of Chondrocyte-agarose Hydrogels
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15:06
Synthesis of an Intein-mediated Artificial Protein Hydrogel
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We present the synthesis of a split-intein-mediated protein hydrogel. The building blocks of this hydrogel are two protein copolymers each containing a subunit of a trimeric protein that serves as a crosslinker and one half of a split intein. Mixing of the two protein copolymers triggers an intein trans-splicing reaction, yielding a polypeptide unit that self-assembles into a hydrogel. This hydrogel is highly pH- and temperature-stable, compatible with organic solvents, and easily incorporates...
FAQs
Light activates the photoinitiator, which enables methacryloyl groups on the modified gelatin to form covalent bonds. The resulting network becomes a hydrated three-dimensional matrix, and changing the formulation or crosslinking conditions alters its stiffness, porosity, and degradation behavior. This control allows researchers to match scaffold properties to different bioengineering requirements.
Gelatin-derived motifs provide cell-interactive features that synthetic polymer networks may not inherently supply. These features can promote cell adhesion and remodeling, helping encapsulated cells interact with and reorganize their surroundings. Combining those biological signals with adjustable network properties makes the material useful when both cellular compatibility and physical tunability are needed.
GelMA retains biological characteristics associated with gelatin while gaining tunability from methacryloyl-mediated network formation. Researchers can therefore adjust stiffness, porosity, and degradation behavior without abandoning cell-interactive cues. This balance distinguishes the material from approaches that emphasize either biological functionality alone or physical control without comparable extracellular-matrix-related features.
Stiffness, porosity, and degradation behavior are key adjustable properties. Formulation and crosslinking conditions determine how the hydrated matrix is organized and how long it persists. By varying these characteristics, researchers can design scaffolds for distinct purposes, including supporting cell encapsulation, modeling tissue environments, or providing a temporary structure during tissue repair.
A typical workflow begins with a GelMA formulation containing a photoinitiator, followed by placement or processing into the desired scaffold configuration. Light exposure then drives covalent network formation and converts the formulation into a hydrated matrix. Researchers can adjust the formulation and crosslinking conditions before solidification to obtain the physical and degradation characteristics required for the experiment.
The material is useful when researchers need a hydrated, cell-interactive matrix that can also be processed into defined structures. Its photocrosslinkability and processing flexibility support cell encapsulation, three-dimensional bioprinting, tissue engineering, and organoid culture. These capabilities allow investigators to create scaffolds that model or replace selected aspects of native extracellular matrix.
In tissue engineering, GelMA can serve as a scaffold whose biological motifs support cell adhesion and remodeling while its network properties are adjusted for the intended construct. In wound repair, the same combination of cellular interaction and controllable matrix behavior can support designing temporary biomaterial environments. The specific formulation depends on the desired scaffold function.
GelMA provides a three-dimensional hydrated environment in which cells or organoids can be housed within a structured matrix. Its gelatin-derived cues support cell interaction, while adjustable stiffness, porosity, and degradation behavior help researchers tailor the surrounding scaffold. This combination makes it relevant for studying tissue organization and constructing bioengineered cellular systems.