Alginate Capsule
Alginate Capsule - Related Videos
07:13
Alginate Encapsulation of Pluripotent Stem Cells Using a Co-axial Nozzle
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Cited by 14 •
2015
We established a method of encapsulating pluripotent stem cells (PS cells) into alginate hydrogel capsules using a co-axial nozzle. This prevents cells from aggregating excessively and limits the shear stress experienced by cells in suspension culture. The technique is applicable to the mass production of PS cells as well as research on stem cell niche.
10:33
Generation of Alginate Microspheres for Biomedical Applications
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Cited by 33 •
2012
In the following sections, we outline procedures for the preparation of alginate microspheres for use in biomedical applications. We specifically illustrate a technique for creating multilayered alginate microspheres for the dual purpose of cell and protein encapsulation as a potential treatment for type 1 diabetes.
10:01
Alginate Microcapsule as a 3D Platform for Propagation and Differentiation of Human Embryonic Stem Cells (hESC) to Different Lineages
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Cited by 20 •
2012
We have optimized a microencapsulation technique as an effective 3D platform for propagation and differentiation of embryonic stem cells to endoderm and dopaminergic (DA) neurons. It also provides an opportunity for immune-isolation of cells from the host during transplantation. This platform can be adapted for other cell types.
04:33
3D Culture of Porcine COCs: A Procedure to Encapsulate Cumulus Oocyte Complexes in Fibrin-alginate Polymer Hydrogel Beads
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2025
This video describes the protocols for encapsulating porcine cumulus-oocyte complexes (COCs) in fibrin-alginate beads to establish a 3D culture. This in-vitro maturation system maintains normal cell-to-cell communication, ensuring oocyte maturation and retaining viability.
10:20
Mammalian Cell Encapsulation in Alginate Beads Using a Simple Stirred Vessel
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Cited by 13 •
2017
This video and manuscript describe an emulsion-based method to encapsulate mammalian cells in 0.5% to 10% alginate beads which can be produced in large batches using a simple stirred vessel. The encapsulated cells can be cultured in vitro or transplanted for cellular therapy applications.
FAQs
Calcium ions act as the crosslinking trigger in an alginate capsule. When alginate encounters calcium, the ions link the polysaccharide chains into a three-dimensional hydrogel network. This conversion changes a polymer mixture into a stable enclosure around cells, tissue fragments, or compounds, providing the structural basis for immobilization.
The semipermeable matrix allows relatively small substances, including nutrients, oxygen, and signaling molecules, to diffuse through the capsule. At the same time, its network retains larger cellular components within the enclosure. This selective exchange helps maintain access to environmental cues while preserving the intended spatial confinement of the encapsulated material.
A three-dimensional alginate matrix supplies a defined microenvironment in which neural cells or tissue fragments remain spatially organized and immobilized. That organization can support controlled study of neural material and help separate the encapsulated contents from surrounding tissue. The resulting arrangement is relevant when researchers need both local containment and molecular exchange.
A basic workflow begins by placing the selected cells, tissue fragments, or therapeutic compound within alginate, followed by exposure to calcium ions to induce ionic crosslinking. The resulting hydrogel enclosure retains the intended contents while preserving pathways for diffusion. The specific encapsulated material determines whether the capsule supports cell study, delivery, or controlled release.
In neuroscience, researchers may use alginate capsules to study neural cells, stem-cell-derived neurons, or neuroactive substances in a defined setting. Applications described for this approach include neural transplantation, disease modeling, controlled release, and strategies intended to reduce immune interactions. Each use takes advantage of containment combined with access to diffusible molecules.
Alginate capsules can provide a platform for examining how encapsulated neural cells or compounds function while remaining physically separated from surrounding tissue. In transplantation research, they may help investigate delivery and tissue interaction; in disease models, they can organize neural material within a defined environment. They also support investigation of controlled release and potential immune-interaction reduction.