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Updated: Aug 7, 2026
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Microengineering 3D Collagen Hydrogels with Long-Range Fiber Alignment
Published on: September 7, 2022
Engineering collagen hydrogels in reduced gravity through kinetic and crowding control
Jiranuwat Sapudom1, Paul Sean Tipay2, Riad Nassri1
1Laboratory for Immuno Bioengineering Research and Applications, Division of Engineering, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates.
International Journal of Biological Macromolecules
|August 5, 2026
Summary
Simulated microgravity alters type I collagen self-assembly, delaying formation and creating thicker, heterogeneous networks. This research reveals gravity
Area of Science:
- Biomaterials Science
- Extracellular Matrix Biology
- Space Biology
Background:
- Collagen self-assembly is crucial for extracellular matrix (ECM) structure.
- The influence of gravity on collagen fibrillogenesis is not well understood.
Purpose of the Study:
- To investigate simulated microgravity's effect on type I collagen hydrogel formation.
- To understand gravity's role in collagen fibril network architecture.
Main Methods:
- Utilized a random positioning machine to simulate microgravity.
- Characterized collagen assembly using turbidity, microscopy, spectroscopy, and fibroblast culture.
- Assessed collagen from rat-tail and bovine sources.
Main Results:
- Simulated microgravity delayed collagen nucleation and assembly, promoting thicker, heterogeneous fibril networks.
- Collagen's triple-helical structure remained intact under simulated microgravity.
- Macromolecular crowding partially restored network uniformity and reduced fibroblast activation.
Conclusions:
- Gravitational unloading primarily affects higher-order collagen assembly, not molecular integrity.
- Gravity is a tunable parameter for engineering collagen hydrogels.
- Microgravity influences ECM organization, relevant for biomaterials and space biofabrication.
