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Related Experiment Video

Updated: May 11, 2026

Micropatterning and Assembly of 3D Microvessels

Micropatterning and Assembly of 3D Microvessels

Published on: September 9, 2016

A microfluidic platform for generating large-scale nearly identical human microphysiological vascularized tissue

Yu-Hsiang Hsu¹, Monica L Moya, Christopher C W Hughes

¹Department of Biomedical Engineering, University of California, Irvine, CA 92697, USA.

|June 1, 2013

Summary

This study presents a novel polydimethylsiloxane microfluidic system for creating human microtissues with vascular networks. The design ensures predictable microenvironments for advanced biological studies and drug development.

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Last Updated: May 11, 2026

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Published on: May 17, 2021

Area of Science:

Biomedical Engineering
Microfluidics
Tissue Engineering

Background:

Developing functional microtissues with integrated vascular networks is crucial for disease modeling and drug screening.
Existing microfluidic systems often lack precise control over the microenvironment, limiting their utility.

Purpose of the Study:

To develop a polydimethylsiloxane (PDMS) microfluidic system capable of generating arrays of human microtissues with interconnected vascular networks.
To establish a predictable and controlled microphysiological environment for studying microtissues.

Main Methods:

The system utilizes resistive circuit concepts to design pressure dividers in serially-connected microtissue chambers.
A long microchannel with large hydraulic resistance and media reservoirs create a constant pressure drop.
Microtissue chambers act as resistive components, allowing controlled pressure drops within each segment.

Main Results:

The microfluidic system successfully generated arrays of nearly identical human microtissues with interconnected vascular networks.
Interstitial flow, a key factor for vasculogenesis, was experimentally verified.
Arrays of 5, 12, and 30 microtissues were cultured over 2-3 weeks.

Conclusions:

This PDMS microfluidic system offers a simple yet effective method for creating controlled microphysiological environments.
The developed microtissue arrays are suitable for biological studies and applications in drug development.
The ability to generate multiple, consistent microtissues with vascularization advances in vitro modeling capabilities.