Gelma Alginate Bioink
Gelma Alginate Bioink - Related Videos
08:34
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Cited by 59 •
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We describe a set of protocols that together provide a tissue-mimicking hydrogel bioink with which functional and viable 3-D tissue constructs can be bioprinted for use in in vitro screening applications.
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.
07:13
Alginate Encapsulation of Pluripotent Stem Cells Using a Co-axial Nozzle
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Cited by 14 •
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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.
10:20
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.
08:22
Microfluidic Bioprinting for Engineering Vascularized Tissues and Organoids
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Cited by 37 •
2017
We provide a generalized protocol based on a microfluidic bioprinting strategy for engineering a microfibrous vascular bed, where a secondary cell type could be further seeded into the interstitial space of this microfibrous structure to generate vascularized tissues and organoids.
FAQs
The two polymers provide complementary routes to stabilization. GelMA forms a network through light-initiated crosslinking of its methacrylate groups, while alginate rapidly gels when exposed to divalent ions such as calcium. Using both chemistries helps a printed construct retain its form while maintaining a hydrated, cell-compatible environment, linking structural stability with conditions suitable for embedded cells.
GelMA contributes biological support through cell adhesion, a property that complements alginate’s rapid ionic gelation. Its methacrylate groups also allow light-initiated network formation, giving the composite a route to mechanical control alongside cell-interactive behavior. This combination is important when bioengineers need printed constructs that support cellular organization rather than merely preserve a three-dimensional shape.
Ionic and light-initiated crosslinking serve different functions within the composite. Calcium-mediated gelation of alginate occurs rapidly and helps stabilize the printed form, whereas GelMA methacrylate crosslinking creates a network through light exposure. Their distinction lets bioengineers combine fast structural support with additional network formation and GelMA’s cell-supportive contribution.
The main targets include printability, stiffness, degradation, and cellular organization. These properties are central because a construct must be printable and structurally stable while also providing a hydrated environment compatible with cells. The composite chemistry gives bioengineers a basis for adjusting the balance between handling during three-dimensional printing and the biological performance expected after fabrication.
A printing approach combines a cell-containing GelMA alginate formulation with the two available gelation mechanisms. Alginate can be rapidly ionically crosslinked with a divalent ion such as calcium, while GelMA can form its methacrylate network through light initiation. Together, these processes support shape retention in a hydrated setting and help preserve conditions compatible with embedded cells.
Its applications include tissue engineering, regenerative medicine, drug testing, and disease modeling. In these settings, researchers can use cell-containing constructs to study or develop systems in which stiffness, degradation, printability, and cellular organization matter. The material is especially relevant when experiments require both controlled three-dimensional architecture and a cell-compatible, hydrated environment.