Realistic computational modeling for hybrid biopolymer microcantilevers

Area of Science:

• Biomedical Engineering
• Cellular Mechanics
• Computational Biology

Background:

• Three-dimensional cell cultures in microfabricated environments mimic in vivo conditions for various studies.
• Analyzing cardiomyocyte contractility is crucial for understanding heart failure mechanisms and cellular changes in diseased hearts.

Purpose of the Study:

• To develop a realistic computational model for quantifying cardiomyocyte contractile force on microcantilevers.
• To incorporate three-dimensional fluid-structural interactions (FSI) into microscale cellular force analysis.

Main Methods:

• Developed a computational model simulating fluid-structural interactions (FSI) for cardiomyocytes on hybrid biopolymer microcantilevers.
• Employed harmonic response analysis within the FSI model to study microcantilever dynamics.
• Compared the FSI model with static Finite Element Method (FEM) analysis and experimental data.

Main Results:

• The FSI model successfully simulated the dynamic behavior of cardiomyocytes on microcantilevers in a medium.
• Microcantilever motion in the medium was characterized as a second-order system using harmonic response analysis.
• The model allowed for quantitative evaluation of cardiomyocyte dynamics' influence on contractile force.

Conclusions:

• The developed FSI model provides a more realistic and dynamic approach to quantifying cardiomyocyte contractile forces compared to static models.
• This computational tool enhances the understanding of cellular mechanics in engineered microenvironments.
• The findings contribute to advancing research in cardiac disease mechanisms and drug development.