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Bioprinting Vascularized Constructs for Clinical Relevance: Engineering Hydrogel Systems for Biological Maturity.
Jeonghyun Son1,2, Siyuan Li3,4, Wonwoo Jeong3
1Department of Bioengineering, Stanford University, Stanford, CA 94305, USA.
Gels (Basel, Switzerland)
|August 28, 2025
Summary
Bioprinting hydrogels create dynamic vascular networks for tissue engineering. Evaluating these systems over time is crucial for successful graft integration and clinical translation.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Vascularization is a major hurdle in tissue engineering, hindering graft success.
- Current bioprinting often prioritizes structure over biological function.
- Vascular development is a time-dependent process requiring dynamic microenvironments.
Purpose of the Study:
- To highlight the importance of hydrogels as active microenvironments for vascular maturation.
- To emphasize the need for time-resolved evaluation of bioprinted vascular systems.
- To discuss the integration of hydrogel properties and bioprinting for clinical translation.
Main Methods:
- Review of hydrogel platforms (natural, synthetic, bioinspired, stimuli-responsive) for vascularization.
- Analysis of design requirements for large and small vessel development.
- Evaluation of bioprinting advancements supporting hydrogel-mediated vascularization.
Main Results:
- Hydrogels provide tunable control over mechanical and biochemical cues essential for vascular maturation.
- Static evaluation methods fail to capture dynamic vascular development processes like lumen formation and remodeling.
- Different vessel sizes have distinct design needs for mechanical properties and host integration.
Conclusions:
- Hydrogel-based microenvironments are critical for achieving functional vascularization in tissue engineering.
- Time-resolved assessment is necessary to understand and optimize vascular development in bioprinted constructs.
- Integrating hydrogel cues with bioprinting fidelity is key to advancing vascularized tissue grafts for clinical use.
