Biomimetic microfluidic device for in vitro antihypertensive drug evaluation

Area of Science:

• Biomedical Engineering
• Pharmacology
• Cell Biology

Background:

• Microfluidic devices offer advanced platforms for in vitro drug testing.
• Evaluating drug effects under physiological conditions like pressure and shear stress is crucial.
• Existing methods for drug evaluation may lack the ability to simulate complex mechanical forces.

Purpose of the Study:

• To develop a facile microfluidic method for evaluating antihypertensive drugs.
• To create a microfluidic chip that mimics blood vessels and applies mechanical stress to cells.
• To assess the efficacy of hydralazine hydrochloride in a simulated physiological environment.

Main Methods:

• Fabrication of a microfluidic chip using poly(dimethylsiloxane) (PDMS).
• Culture of human umbilical vein endothelial cells (HUVECs) within the microchannel.
• Application of controlled pressures and shear stresses to the cultured cells.
• Evaluation of antihypertensive drug effects, using hydralazine hydrochloride as a model.

Main Results:

• The microfluidic chip successfully simulated blood vessel conditions with applied pressure and shear stress.
• Hydralazine hydrochloride demonstrated efficacy in mitigating pressure-induced endothelial cell dysfunction.
• The system provided a cost-effective platform for studying cellular responses to drugs under mechanical load.

Conclusions:

• The developed microfluidic system is a convenient and effective tool for in vitro antihypertensive drug evaluation.
• This platform allows for the study of drug effects on cells under physiologically relevant mechanical forces.
• The findings support the use of microfluidic technology for preclinical drug safety and efficacy assessments.