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Light-mediated Formation and Patterning of Hydrogels for Cell Culture Applications
Published on: September 29, 2016
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Three-Dimensional Microstructured Azobenzene-Containing Gelatin as a Photoactuable Cell Confining System
Fabrizio A Pennacchio1,2, Chiara Fedele1,2, Selene De Martino1,2
1Center for Advanced Biomaterials for Healthcare, IIT@CRIB, Istituto Italiano di Tecnologia , Largo Barsanti e Matteucci, 53, 80125 Napoli, Italy.
ACS Applied Materials & Interfaces
|December 21, 2017
Summary
Researchers developed a light-responsive gelatin hydrogel that dynamically changes shape. This biomaterial controls cell structure and function, offering new possibilities for engineered stem cell niches.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Cell Biology
Background:
- Physical cell confinement is crucial for regulating cell structure and function.
- Existing biomaterials lack dynamic features to mimic the cell's microenvironment.
- There is a need for advanced platforms that dynamically interact with cells.
Purpose of the Study:
- To develop a dynamic biomaterial for controlled cell confinement.
- To investigate the effect of light-triggered structural changes on cell behavior.
- To create novel photoactuable culture systems for biological applications.
Main Methods:
- Fabrication of a gelatin-based hydrogel micropatterned using two-photon polymerization.
- Incorporation of an azobenzene cross-linker for light-induced actuation.
- Culturing NIH-3T3 cells within the microstructures and applying controlled light irradiation.
Main Results:
- The azobenzene-crosslinked gelatin hydrogel exhibited controlled light-triggered expansion.
- Light irradiation induced in-plane nuclear deformation in physically confined NIH-3T3 cells.
- The dynamic microstructures successfully altered the cellular structural organization.
Conclusions:
- The developed photoactuable gelatin hydrogel enables dynamic control over cell confinement.
- This technology offers a new platform for creating "dynamic caging culture" systems.
- Potential applications include the development of "engineered stem cell niches" for regenerative medicine.
