Microbead Production
Microbead Production - Related Videos
05:54
Microbead Implantation in the Zebrafish Embryo
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Cited by 8 •
2015
The zebrafish is an excellent model system for genetic and developmental studies. Bead implantation is a valuable tissue manipulation technique that can be used to interrogate developmental mechanisms by introducing alterations in local cellular environments. This protocol describes how to perform microbead implantation in the zebrafish embryo.
03:08
Fabrication of Amyloid-Beta-Releasing Polymer Microbeads for Modeling Alzheimer's Disease
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2025
This video demonstrates a method for fabricating polymer microbeads that encapsulate neurotoxic amyloid-beta-secreting cells. The cell-polymer suspension is processed through a microbead fabrication device, with polymer gelation achieved via calcium cross-linking, forming spherical microbeads around the cells. The polymer allows cell proliferation while allowing controlled, long-term amyloid-beta release, simulating its accumulation in Alzheimer's disease.
05:51
Intracerebroventricular and Intravascular Injection of Viral Particles and Fluorescent Microbeads into the Neonatal Brain
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Cited by 18 •
2016
Here, we describe a simple method of intracerebroventricular and intravascular injection of viral particles or fluorescent microbeads into the neonatal mouse brain. The localization pattern of the virus and nanoparticles could be detected by microscopic evaluation or by in situ hybridization.
08:14
Rapid Magnetic-microbead Method for Efficient Purification of Low-density Neutrophils
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Cited by 1 •
2025
Low-density neutrophils (LDN) increase significantly in several diseases. LDN are usually isolated through cell sorting. We present a practical method to obtain pure and viable LDN. After density-gradient centrifugation of peripheral blood, cells are incubated with magnetic microbeads, and then LDN are separated through magnetic columns.
09:26
A Magnetic Microbead Occlusion Model to Induce Ocular Hypertension-Dependent Glaucoma in Mice
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Cited by 71 •
2016
Here, we present a protocol to induce ocular hypertension in the murine eye that results in the loss of retinal ganglion cells as observed in glaucoma. Magnetic microbeads are injected into the anterior chamber and attracted to the iridocorneal angle using a magnet to block the outflow of aqueous humour.
FAQs
A liquid formulation is dispersed into droplets within a second phase, creating the initial geometry of each bead. The composition of that liquid determines which material becomes incorporated, such as a polymer, drug, biomolecule, or cell. Maintaining consistent droplet formation is therefore important because bead diameter and internal composition affect delivery behavior, protection, and biological interactions.
These processes stabilize newly formed droplets so they retain their spherical structure and intended contents. Gelation and crosslinking create a persistent network, while solvent removal or polymerization can solidify the material through different mechanisms. Selecting an appropriate stabilization route helps preserve bead composition and supports the desired performance in drug delivery, cell encapsulation, or laboratory assays.
Diameter, porosity, surface chemistry, and degradation behavior are central performance variables. Diameter can influence how a bead functions in a controlled system, while porosity affects the bead’s internal environment. Surface chemistry shapes biological interactions, and degradation behavior influences how long the structure persists. Adjusting these properties allows researchers to tune delivery, protection, and tissue-engineering functions.
The liquid phase can be formulated to contain a drug, biomolecule, polymer, or cell before droplet stabilization. This makes the same general production strategy adaptable to distinct medical purposes, but the resulting bead must preserve both its structure and incorporated material. For example, cell encapsulation emphasizes protection and a suitable surrounding matrix, whereas drug-loaded beads emphasize controlled release.
A general workflow begins by preparing a liquid containing the selected polymer, therapeutic material, biomolecule, or cells. That liquid is then dispersed into droplets within another phase. The droplets undergo gelation, crosslinking, solvent removal, or polymerization, after which the stabilized beads can be used in a medical system. The selected steps determine size, composition, and structural persistence.
Researchers may use microbeads when a medical system needs controlled drug release, cell encapsulation, tissue engineering support, or a platform for laboratory assays. Their value comes from combining a defined spherical structure with tunable composition and surface properties. Depending on the design, beads can help deliver therapeutic materials, protect biological contents, or present materials for studying biological interactions.