A study on the cellular structure during stress solicitation induced by BioMEMS

Area of Science:

• Biotechnology
• Cellular Mechanics
• Microelectromechanical Systems (MEMS)

Background:

• Investigating single-cell mechanics is complex due to cellular matrix diversity and cell-cell interactions.
• Current methods for cell stretching have limitations in microscopy compatibility and integration with other analytical tools.

Purpose of the Study:

• To develop advanced bioMEMS devices for controlled single-cell stretching.
• To explore the morphological and mechanical responses of single cells under tensile stress.
• To enhance compatibility with various microscopy techniques and analytical instruments.

Main Methods:

• Fabrication of transparent silicon nitride and non-transparent silicon-based bioMEMS for cell stretching.
• Utilizing transparent bioMEMS with transmission/reflection microscopy and coupling with patch clamp or atomic force microscopy.
• Applying controlled stretching to single cells and analyzing morphological changes.

Main Results:

• Developed both transparent and non-transparent bioMEMS for cell stretching applications.
• Transparent bioMEMS offer broader compatibility with microscopy and advanced analytical tools.
• Observed that single cells exhibit a reactive morphological response to controlled stretching.
• Identified a hysteretic behavior in the ratio of cell area to perimeter during deformation.

Conclusions:

• The developed transparent bioMEMS significantly expand possibilities for single-cell investigation.
• Controlled cell stretching reveals complex cellular responses, including hysteresis.
• These findings provide a foundation for deeper understanding of cell structure and mechanics.