Cellular and Subcellular Contact Guidance on Microfabricated Substrates.

Area of Science:

• Biophysics
• Cell Biology
• Materials Science

Background:

• Extracellular topography significantly influences cell behavior and function.
• Micro and nano-fabrication techniques enable the creation of diverse engineered platforms for studying cell-topography interactions.
• Contact guidance, the study of patterned substrate influence on cells, is a rapidly advancing field.

Purpose of the Study:

• To provide a comprehensive review of contact guidance from cellular to subcellular levels.
• To classify topographical patterns and illustrate generic cellular responses.
• To highlight cell-specific responses to common topographies and discuss molecular mechanisms.

Main Methods:

• Literature review and classification of topographical patterns.
• Analysis of cellular and subcellular responses to engineered substrates.
• Focus on neuronal cell responses to topographical cues.

Main Results:

• Diverse topographies elicit varied cellular responses.
• Specific cell types, particularly neuronal cells, exhibit unique behaviors on patterned substrates.
• Key subcellular and molecular players in topographical sensing have been identified.

Conclusions:

• Understanding cell-topography interactions at multiple scales is crucial for advancing contact guidance research.
• Future research should address remaining challenges in deciphering these complex interactions.
• Neuronal cells serve as a valuable model for uncovering fundamental mechanisms of topographical sensing.