Related Experiment Video
Updated: Jul 10, 2026
06:29
Using Multilayered Hydrogel Bioink in Three-Dimensional Bioprinting for Homogeneous Cell Distribution
Published on: May 2, 2020
6.6K
Particle-based hydrogel inks and support matrices for biofabricating structural complexity, soluble gradients, and
Julia Tumbic1, Emily Ferrarese2, Remington Martinez1
1Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22903, United States of America.
Biofabrication
|August 22, 2025
Summary
This study introduces an all-granular bioprinting system using hyaluronic acid and gelatin hydrogels to create complex, high-resolution biofabricated structures. The system enables precise control over cell environments and supports the development of functional bioprinted tissues.
Area of Science:
- Biomaterials Science
- Biofabrication
- Tissue Engineering
Background:
- Achieving biomimetic complexity in biofabricated systems is challenging.
- Particle-based hydrogel inks and support matrices offer a potential solution.
- Existing methods require further advancements in resolution and material control.
Purpose of the Study:
- To develop an all-granular bioprinting system for creating complex, high-resolution biofabricated structures.
- To utilize hyaluronic acid-based hydrogels for support matrices and gelatin hydrogels for inks.
- To demonstrate the system's capability in guiding cell behaviors and supporting tissue development.
Main Methods:
- Developed a granular support matrix from a tunable hyaluronic acid-based hydrogel.
- Formulated a small particle gelatin hydrogel as a printable ink.
- Incorporated soluble, interstitial components and utilized yield stress behaviors for flow and stabilization.
- Employed photoinitiated crosslinking for support matrix stabilization.
- Demonstrated channel formation by melting gelatin ink and assessed flow and factor transport.
Main Results:
- Achieved high-resolution structures with feature sizes as small as 100 µm.
- Created stable, printable granular inks and support matrices with yield stress properties.
- Successfully formed channels that supported fluid flow and soluble factor transport.
- Demonstrated biocompatibility with encapsulated and introduced cells, including initial endothelialization.
- Printed complex, multi-material structures with precise spatial positioning.
Conclusions:
- The all-granular bioprinting system enables the creation of intricate, multi-material constructs with high resolution.
- The system effectively supports cell viability and can be used to establish functional features like channels for factor delivery.
- This approach holds significant promise for advancing biomimetic complexity in biofabrication and tissue engineering applications.
Keywords:
bioprintingembedded printinggranular hydrogelshyaluronic acidmatrix assisted bioprintingremovable inksupport bathsMore Related Videos
Related Concept Videos
01:57Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
01:57Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
01:17Ziegler–Natta Chain-Growth Polymerization: Overview
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta catalyst, high molecular...
01:29The Colloidal State
The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...