Quantification of cell adhesion using a spinning disc device and application to surface-reactive materials

Area of Science:

• Biomaterials Science
• Cell Biology
• Biophysics

Background:

• Quantitative cell adhesion analysis is crucial for understanding biological processes and advancing biotechnology.
• Electrochemical measurements can simulate fluid flow and mass transport conditions relevant to cell adhesion studies.

Purpose of the Study:

• To develop and validate a spinning disc device for quantitative cell adhesion analysis.
• To investigate the adhesion of osteoblast-like cells to fibronectin-coated bioactive and non-reactive glasses under controlled force and chemical conditions.

Main Methods:

• Utilized a spinning disc device with electrochemical measurements to simulate fluid dynamics and mass transport.
• Applied controlled detachment forces to osteoblast-like cells adhered to fibronectin-coated glass substrates.
• Varied chemical environments to assess their impact on cell adhesion.

Main Results:

• The spinning disc device accurately replicated fluid flow and mass transport fields.
• Cellular adhesion decreased non-linearly with increasing applied detachment force.
• The cell detachment profile followed a sigmoidal curve, consistent with normally distributed cell adhesion properties.

Conclusions:

• The spinning disc device is a viable tool for quantitative cell adhesion analysis under defined mechanical and chemical conditions.
• Osteoblast-like cell adhesion to fibronectin-coated surfaces is force-dependent and can be modeled using sigmoidal distribution.
• This method facilitates the study of cell-material interactions for biotechnological applications.