Peg Hydrogel
Peg Hydrogel - Related Videos
09:21
Generation and Recovery of β-cell Spheroids From Step-growth PEG-peptide Hydrogels
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Cited by 5 •
2012
The following protocol provides techniques for encapsulating pancreatic β-cells in step-growth PEG-peptide hydrogels formed by thiol-ene photo-click reactions. This material platform not only offers a cytocompatible microenvironment for cell encapsulation, but also permits user-controlled rapid recovery of cell structures formed within the hydrogels.
07:50
Electrophysiology of Scorpion Peg Sensilla
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Cited by 4 •
2011
This article describes an electrophysiological method for isolating chemical stimulation to individual sensilla via extracellular, tip-recordings under mineral oil.
06:41
A Peg Plate Biofilm Assay for Screening Antibacterial Agents
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2025
This video demonstrates an assay for screening antimicrobial compounds that efficiently eliminate biofilms using a peg-plate. The methodology monitors the biofilm's metabolic state after treatment with antimicrobial compounds, facilitating the determination of the minimum biofilm eradication concentration.
09:19
Patterning Bioactive Proteins or Peptides on Hydrogel Using Photochemistry for Biological Applications
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Cited by 3 •
2017
In this method, we use photopolymerization and click chemistry techniques to create protein or peptide patterns on the surface of polyethylene glycol (PEG) hydrogels, providing immobilized bioactive signals for the study of cellular responses in vitro.
07:25
Collagen Hydrogels
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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...
FAQs
Crosslinking joins PEG-based macromers into a connected network, and the extent or conditions of that reaction help establish the material’s internal structure. Chemical reactions and light-initiated reactions provide different ways to create the network. By controlling crosslinking conditions, researchers can tune stiffness, swelling, degradation, and molecular transport for a specific bioengineering application.
Polymer concentration and crosslinking conditions are central design variables because they influence several properties at once. Adjusting them can change how stiff the matrix is, how much water it retains, how readily substances move through it, and how it degrades. These variables allow the same PEG-based platform to support different experimental or tissue-engineering requirements.
Swelling describes how the water-rich network responds to its environment, while transport concerns movement through the porous matrix. Together, these properties affect the conditions experienced by encapsulated cells and the behavior of substances placed in the gel. Their tunability makes PEG hydrogels useful when researchers need to control the local three-dimensional environment or delivery characteristics.
PEG hydrogels have a relative resistance to nonspecific protein adsorption, which helps reduce unintended interactions between the material and surrounding biological components. This characteristic gives researchers greater control over the engineered environment rather than relying on uncontrolled protein accumulation. As a result, PEG networks can serve as useful platforms for studying cell behavior and designing tissue-mimicking systems.
Preparation begins with selecting PEG-based macromers and choosing whether chemical or light-initiated crosslinking will form the network. Researchers then set the polymer concentration and crosslinking conditions to obtain the desired combination of stiffness, swelling, degradation, and transport. The resulting three-dimensional matrix can subsequently be used for cell encapsulation, culture, delivery, or tissue-engineering studies.
Researchers may choose PEG hydrogels when they need a tunable, water-rich three-dimensional matrix around cells. The network’s adjustable stiffness, swelling, degradation, and transport properties can help create defined experimental environments, while its relative resistance to nonspecific protein adsorption supports controlled studies. This makes the material relevant for investigating how cells respond to engineered surroundings.
In tissue engineering, PEG hydrogels provide adjustable matrices that can support engineered biological structures and cell-containing systems. In drug delivery, their swelling, degradation, and transport characteristics can be tuned to influence the surrounding delivery environment. The same controllable chemistry therefore supports both material design and biological applications, including cell encapsulation and three-dimensional culture.