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Related Experiment Video

Updated: Jun 18, 2025

Optimization of Renal Organoid and Organotypic Culture for Vascularization, Extended Development, and Improved Microscopy Imaging
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Optimization of Vascularized Intestinal Organoid Model.

Zhang Wen1, Mariabelen Orduno1, Zixie Liang1

  • 1Department of Biomedical Engineering, Yale University, New Haven, CT, USA.

Advanced Healthcare Materials
|August 2, 2024
PubMed
Summary

This study developed a novel hydrogel and medium system to vascularize organoids without fibroblasts. This method enhances organoid vascularization and tissue development by optimizing the microenvironment.

Keywords:
collagen bundlehydrogel nicheintestinal organoidsstructural cuesvascularization

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Area of Science:

  • Tissue Engineering and Regenerative Medicine
  • Biomaterials Science
  • Developmental Biology

Background:

  • Vascularization is essential for organ homeostasis and metabolism.
  • 3D organoids lack integrated vascular systems, limiting physiological complexity.
  • Current organoid vascularization methods often rely on fibroblasts and have unclear niche effects.

Purpose of the Study:

  • To investigate the impact of Matrigel-to-fibrin ratio in co-gels on vascular network formation and organoid growth.
  • To develop a fibroblast-free system for enhanced organoid vascularization.
  • To explore the role of structural cues and pore architecture in angiogenesis within organoids.

Main Methods:

  • Development of a fine-tuned fibrin-Matrigel co-gel hydrogel with aprotinin and 15% Matrigel.
  • Modification of co-culture medium with basic fibroblast growth factor (bFGF) and heparin.
  • Incorporation of engineered thick collagen fiber bundles to guide vascular network formation.

Main Results:

  • Successful vascular network formation and organoid vascularization achieved using the optimized hydrogel and medium, without fibroblasts.
  • Demonstrated that structural cues and pore architectures are critical for effective angiogenesis.
  • Engineered collagen fiber bundles guided vascular network formation, improving interactions with organoids.

Conclusions:

  • An optimized system combining engineered fiber bundles, fine-tuned hydrogel, and modified medium advances organoid vascularization.
  • This fibroblast-free approach enhances the recapitulation of physiological complexities in vascularized organoids.
  • The findings provide a new strategy for improving tissue and organoid vascularization for research and therapeutic applications.