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A standalone perfusion platform for drug testing and target validation in micro-vessel networks
Boyang Zhang1, Carlotta Peticone2, Shashi K Murthy3
1Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada ; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3E2, Canada.
Biomicrofluidics
|January 10, 2014
Summary
This study introduces a standalone microfluidic platform for advanced drug testing on engineered human vascular networks. The system accurately models blood flow and drug interactions, improving in vitro research capabilities.
Area of Science:
- Biomedical Engineering
- Vascular Biology
- Pharmacology
Background:
- Traditional cell culture lacks in vivo vascular complexity and flow dynamics.
- Existing microfluidic platforms require external hardware, limiting accessibility for researchers.
- Accurate modeling of endothelial cell responses to drugs requires consideration of shear stress and network architecture.
Purpose of the Study:
- To develop a user-friendly, standalone microfluidic perfusion platform for vascular network modeling.
- To enable high-throughput drug testing and validation assays in a physiologically relevant context.
- To investigate the impact of flow and drug dose on endothelial cell function.
Main Methods:
- Developed a standalone perfusion system with a miniaturized peristaltic pump for multiple microfluidic devices.
- Engineered multi-level branching micro-vessel networks using endothelial cells.
- Performed drug-induced nitric oxide and monocyte adhesion assays with vaso-active drugs and inflammatory cytokines.
Main Results:
- The platform successfully mimicked natural blood vessel geometry and supported endothelial cell culture.
- Drug assays demonstrated flow and dose-dependent responses, capturing complex drug-flow interactions.
- Engineered networks revealed drug-flow effects not observable in simple channels.
Conclusions:
- The developed platform offers a more physiological and accessible model for studying endothelial cell responses.
- This technology advances in vitro drug screening and validation for vascular pharmacology.
- The system accurately captures complex interactions between fluid dynamics and pharmacological agents in vascular networks.
