Bio-inspired configurable multiscale extracellular matrix-like structures for functional alignment and guided...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Cell Biology

Background:

• The extracellular matrix (ECM) provides crucial hierarchical topographical cues that regulate cell structure and function.
• Mimicking the multiscale nature of the native ECM is essential for developing advanced biomaterials and tissue engineering platforms.

Purpose of the Study:

• To develop a fabrication method for precisely controllable multiscale hierarchical structures.
• To create a platform that mimics the topographical and orientation cues of the ECM.
• To investigate the influence of multiscale topography on cell morphology and orientation.

Main Methods:

• Utilized capillary force lithography combined with a wrinkling technique to create nanotopography on microgrooves.
• Fabricated polyurethane acrylate-based nanotopography with varied orientations.
• Cultured fibroblast cells on the developed multiscale substrata.

Main Results:

• Demonstrated precise control over multiscale hierarchical structures.
• Showed that nanotopography significantly influences fibroblast cell structure and orientation, more so than microtopography.
• Proposed a method for generating native ECM with specific 3D configurations using fibroblast cell culture.

Conclusions:

• The developed methodology offers efficient strategies for designing and manipulating functional platforms.
• This approach holds potential for creating well-defined 3D tissue structures for regenerative medicine.
• The study highlights the critical role of nanotopography in directing cell behavior within engineered environments.