Tissue Encapsulation
Tissue Encapsulation - Related Videos
09:37
Cellular Encapsulation in 3D Hydrogels for Tissue Engineering
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Cited by 54 •
2009
We present protocols for the 3-dimensional (3D) encapsulation of cells within synthetic hydrogels. The encapsulation procedure is outlined for two commonly used methods of crosslinking (michael-type addition and light-initiated free radical mechanisms), as well as a number of techniques for assessing encapsulated cell behavior.
08:30
Encapsulation Thermogenic Preadipocytes for Transplantation into Adipose Tissue Depots
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Cited by 6 •
2015
Here, we present a protocol for encapsulation of catabolic cells, which consume lipids for heat production in intra-abdominal adipose tissue and increase energy dissipation in obese mice.
10:18
Encapsulation of Cardiomyocytes in a Fibrin Hydrogel for Cardiac Tissue Engineering
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Cited by 79 •
2011
We describe the isolation of neonatal cardiomyocytes and the preparation of the cells for encapsulation in fibrin hydrogel constructs for tissue engineering. We describe methods for analyzing the tissue engineered myocardium after the culture period including active force generated upon electrical stimulation and cell viability and immunohistological staining.
09:14
Tracking Hypoxic Signaling within Encapsulated Cell Aggregates
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Cited by 10 •
2011
A method for photo-encapsulation of cells in a crosslinked PEG hydrogel is described. Hypoxic signaling within encapsulated murine insulinoma (MIN6) aggregates is tracked using a fluorescent marker system. This system allows serial examination of cells within a hydrogel scaffold and correlation of hypoxic signaling with changes in cell phenotype.
07:08
PuraMatrix Encapsulation of Cancer Cells
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Cited by 31 •
2009
This video demonstrates how to encapsulate and culture cancer cells in PuraMatrix, a commercially available self assembling peptide gel.
FAQs
Implantation causes injury and exposes the material to surrounding tissue, prompting foreign-body recognition and recruitment of immune cells. Macrophages then release signals that activate fibroblasts, which promote collagen deposition at the implant interface. This sequence can create a surrounding layer that either permits useful integration or progressively isolates the material from nearby tissue.
Capsule thickness influences how closely the implant remains connected to surrounding tissue and how readily substances move across the interface. A thicker layer can contribute to isolation, whereas controlling its formation may help preserve access to oxygen, nutrients, therapeutic molecules, or local biological signals. Researchers therefore treat thickness as an important design and performance variable.
Macrophages act as signaling cells after injury and foreign-body recognition, releasing factors that affect nearby tissue behavior. Fibroblasts respond to those signals by promoting collagen deposition, producing structural material around the implant. Together, these cellular activities establish the developing interface that researchers must manage when seeking functional integration rather than excessive fibrous isolation.
Vascular access and transport across the surrounding layer determine whether oxygen, nutrients, and therapeutic molecules can reach an implanted system effectively. If the interface limits these exchanges, device or construct performance may decline even when the implant remains physically present. Designing around these transport requirements is therefore central to maintaining function in bioengineering applications.
Researchers consider capsule thickness, vascular access, and the movement of oxygen, nutrients, and therapeutic molecules when studying or designing implanted systems. They also account for the inflammatory response that links immune recognition to fibroblast activation and collagen deposition. Adjusting these features can help balance tissue integration, material isolation, and continued operation of the implant.
In drug-delivery and cell-encapsulation systems, the surrounding tissue response can influence whether therapeutic molecules remain accessible and whether encapsulated cells receive adequate oxygen and nutrients. Studying the capsule helps researchers design platforms that maintain exchange with the surrounding tissue while limiting excessive inflammation. These considerations directly affect the potential function of engineered therapeutic systems.
Tissue encapsulation is important for drug-delivery systems, cell-encapsulation platforms, biosensors, and prosthetic devices because each depends on a stable interaction with surrounding tissue. The response can influence sensing, therapeutic exchange, or device integration by changing the local interface. Understanding and controlling that interface also supports the development of safer regenerative technologies.