Hydrogel Delivery
Hydrogel Delivery - Related Videos
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...
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...
09:39
Constructing a Collagen Hydrogel for the Delivery of Stem Cell-loaded Chitosan Microspheres
0 Views •
Cited by 6 •
2012
A major hurdle in current stem cell therapies is determining the most effective method to deliver these cells to host tissues. Here, we describe a chitosan-based delivery method that is efficient and simple in approach, while allowing adipose-derived stem cells to maintain their multipotency.
15:06
Synthesis of an Intein-mediated Artificial Protein Hydrogel
0 Views •
Cited by 2 •
2014
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...
09:47
FRET Imaging in Three-dimensional Hydrogels
0 Views •
Cited by 3 •
2016
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.
FAQs
Mesh size acts as a physical gate within the crosslinked network. Smaller or larger spaces can alter how readily biological or therapeutic cargo moves through the hydrogel, while the polymer composition and degradation rate provide additional control. Together, these features determine whether release remains localized and how long cargo can be retained at a target site.
Degradation rate changes the lifetime of the delivery environment. A more rapidly degrading network may lose its structural control sooner, whereas slower degradation can preserve the hydrogel’s influence on cargo movement for longer. Polymer composition also affects these behaviors, so researchers can tune the material according to whether retention or release is the primary goal.
Swelling changes the amount of fluid and available space within the network. Because external conditions can influence swelling, they can also change molecular transport and release even when the hydrogel composition remains unchanged. Accounting for this dependence helps researchers interpret variation between settings and evaluate whether a delivery system behaves consistently at its intended biological site.
Design starts by relating the cargo and intended location to the hydrogel’s structural and chemical features. Researchers consider mesh size, polymer composition, degradation rate, and conditions that may affect swelling. This coordinated choice helps maintain biological or therapeutic cargo at the target site while limiting unwanted distribution and supports a predictable release pattern.
Localized drug administration is one major application because the material can keep a therapeutic payload near a selected site rather than allowing broad distribution. The same principle supports protein and gene delivery, where retention and controlled movement are important experimental goals. These uses let researchers examine how release location and timing affect biological treatment strategies.
Cell encapsulation and tissue engineering extend hydrogel delivery beyond soluble drugs. A network can hold cells within a three-dimensional setting while researchers study delivery, retention, and material behavior together. In regenerative medicine and disease treatment, these systems provide a biomaterial platform for exploring localized cargo administration and designing approaches that support tissue-focused interventions.