Vessel-on-a-chip models for studying microvascular physiology, transport, and function in vitro

Area of Science:

• Biomedical Engineering
• Cell Biology
• Microfluidics

Background:

• Understanding microvasculature growth and remodeling is crucial for tissue engineering and disease research.
• Existing cell culture methods lack the physiological relevance needed for accurate microvascular studies.

Purpose of the Study:

• To review the capabilities of microfabricated vessels, or "vessels-on-a-chip," in emulating living tissue.
• To highlight the advantages of these models over traditional cell culture techniques for microvascular research.

Main Methods:

• Discussion of microfabrication techniques for creating engineered microvessels.
• Analysis of how these models integrate microscale flow, biomolecular transport, cell interactions, and 3-D matrix environments.
• Review of key features of microvascular transport and physiology.

Main Results:

• Microfabricated vessels offer a more physiological environment compared to established cell culture techniques.
• These models enable the study of complex microvascular functions under controlled conditions.
• Strengths and limitations of various microfabrication strategies are critically assessed.

Conclusions:

• Vessels-on-a-chip represent a significant advancement for microvascular research.
• These engineered systems hold great potential for future studies in vascular biology and disease.
• Current challenges and future opportunities for optimizing these models are identified.