Proteolytically Degradable Hydrogel
Proteolytically Degradable Hydrogel - Related Videos
07:45
Proteolytically Degraded Alginate Hydrogels and Hydrophobic Microbioreactors for Porcine Oocyte Encapsulation
0 Views •
Cited by 10 •
2020
Presented here are two protocols for the encapsulation of porcine oocytes in 3D culture conditions. In the first, cumulus-oocyte complexes (COCs) are encapsulated in fibrin-alginate beads. In the second, they are enclosed with fluorinated ethylene propylene powder particles (microbioreactors). Both systems ensure optimal conditions to maintain their 3D organization.
12:37
A Method for Ovarian Follicle Encapsulation and Culture in a Proteolytically Degradable 3 Dimensional System
0 Views •
Cited by 80 •
2011
A new method for ovarian follicle encapsulation in a 3D fibrin-alginate interpenetrating network is described. This system combines structural support with proteolytic degradation to support the development of immature follicles to produce mature oocytes. This method may be applied to culture cell aggregates to maintain cell-cell contacts without limiting expansion.
03:07
Targeted Bacterial Colony Isolation Using Light-Patterned Hydrogel Degradation
0 Views •
2025
Source: Fattahi, N., et al. Photodegradable Hydrogel Interfaces for Bacteria Screening, Selection, and Isolation. J. Vis. Exp. (2021).This video demonstrates the extraction of bacterial colonies from a photodegradable hydrogel using UV light. A specific colony is selected, and a patterned light exposure is designed to initiate localized hydrogel degradation. After adjusting light intensity and duration, the UV light is applied, releasing the colony. The colony is then aspirated through tubing...
07:25
Collagen Hydrogels
0 Views •
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...
08:33
Hydrogel Synthesis
0 Views •
2023
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...
FAQs
Peptide crosslinks act as enzyme-sensitive junctions within the polymer network. When proteases cleave these sequences, the network loses connectivity at the affected locations rather than breaking down uniformly. This sequence-specific mechanism allows degradation to follow biological activity, helping the material provide temporary structural support while cells and tissues interact with their surroundings.
Local protease activity creates spatially controlled remodeling. Cells can digest nearby peptide crosslinks, producing changes around their immediate location while much of the surrounding hydrogel remains intact. Externally supplied enzymes can provide another means of initiating digestion. This localized behavior is important when cell movement or tissue development must occur without immediate loss of overall material structure.
The degradation response should be coordinated with the pace of tissue formation. If enzymatic breakdown occurs as cells migrate and deposit new matrix, the hydrogel can progressively yield space and support changing cell interactions. In bioengineering designs, this matching principle helps balance temporary structural retention with the gradual replacement or remodeling of the original material.
Hydrogel degradation can influence several linked cellular behaviors, including migration and matrix deposition. Cleavage of peptide crosslinks changes the local three-dimensional environment, while continued network support preserves a framework for cell interaction. Consequently, the material is not only a passive container: its enzymatic responsiveness can shape how cells move through and modify their surrounding matrix.
A basic design process begins by incorporating peptide crosslinks that respond to the relevant proteolytic activity, then forming the water-rich polymer network around the intended biological system. Cells or encapsulated factors can be placed within that network, followed by evaluation of degradation, cell migration, matrix deposition, or factor release as remodeling proceeds.
This approach is useful when a biomaterial must provide structural support while responding to biological activity. Its applications include tissue engineering, regenerative medicine, drug delivery, and three-dimensional cell culture. In each setting, enzymatic remodeling can help coordinate the material environment with cellular behavior, tissue development, or the controlled release of encapsulated factors.