Vascularizing organoids-on-chip for perfused and personalized models

Area of Science:

• Biomedical Engineering
• Stem Cell Biology
• Microfluidics

Background:

• Organoids are advanced in vitro models for human physiology and disease, but face challenges like incomplete maturation and lack of vasculature.
• Integrating organoids into microfluidic platforms (organoids-on-chip) offers a controlled microenvironment to address these limitations.

Purpose of the Study:

• To review the biological rationale, current strategies, and technical considerations for vascularizing organoids-on-chip.
• To highlight the potential of vascularized organoids for improving physiological relevance, functional performance, and translational applicability.

Main Methods:

• Discusses strategies for establishing stable, lumenized, and perfusable vascular networks within 3D organoid structures.
• Highlights the need for interdisciplinary expertise in stem cell biology, microfluidics, and biomaterials engineering.
• Focuses on creating organ-specific components, physiological flow, and anastomosis between endogenous and exogenous vascular compartments.

Main Results:

• Vascularization enables direct nutrient/oxygen delivery and waste removal, promoting organoid maturation beyond embryonic stages.
• Integrated vascular networks improve organoid physiology and relevance for disease modeling and drug screening.
• Vascularized organoids-on-chip show promise for personalized medicine and enhanced translational applications.

Conclusions:

• Vascularization is a critical step for advancing organoid-on-chip technology.
• Achieving functional vascularized organoids requires a multidisciplinary approach.
• This technology holds significant potential for improving in vitro disease modeling and drug development.