Microfluidic platform for the elastic characterization of mouse submandibular glands by atomic force microscopy

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Mechanical Engineering

Background:

• Mammalian tissue development and morphogenesis are influenced by mechanical stimuli from the local environment.
• Tissues often adapt their physical characteristics, such as elasticity, to match their surroundings.
• Microscale mechanical property characterization is crucial for understanding tissue behavior and guiding tissue engineering.

Purpose of the Study:

• To present a novel microfluidic platform for the non-destructive, ex vivo microscale mechanical characterization of mammalian tissues.
• To enable precise quantification of tissue elasticity using atomic force microscopy (AFM).
• To investigate the effects of chemical stimuli on tissue mechanical properties.

Main Methods:

• Development of a microfluidic device designed to securely hold tissue samples.
• Integration of a dynamically controllable fluid environment within the microfluidic platform.
• Utilizing atomic force microscopy (AFM) in force spectroscopy mode for mechanical testing of tissue samples.

Main Results:

• Successful demonstration of the platform's capability to quantify microscale elasticity of mouse submandibular gland tissue.
• Observation of changes in tissue elasticity in response to chemical stimuli.
• Validation of the non-destructive nature of the mechanical characterization method.

Conclusions:

• The developed microfluidic platform provides a valuable tool for the mechanical characterization of biological tissues at the microscale.
• This technology can offer critical insights for tissue engineering applications by quantifying mechanical properties and their responses to environmental changes.
• The platform facilitates the study of structure-property relationships in biological materials.