Cell Seeding on 3D Scaffolds for Tissue Engineering and Disease Modeling Applications

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Additive Manufacturing

Background:

• Scaffold cell seeding is vital for tissue-engineered constructs but challenging in highly porous, additively manufactured scaffolds.
• Large pore sizes and high porosity in these scaffolds lead to poor seeding efficacy and uneven cell distribution.

Purpose of the Study:

• To develop and validate a simple, efficient cell seeding technique for porous scaffolds.
• To improve cell retention and distribution in melt electrowritten polycaprolactone scaffolds.

Main Methods:

• Preincubation of scaffolds in 100% serum for 1 hour prior to cell seeding.
• Utilizing highly porous melt electrowritten polycaprolactone scaffolds.
• Employing assays like alizarin red, Sirius red, and immunostaining for quality control.

Main Results:

• The serum preincubation method demonstrated reproducible and homogeneous cell seeding.
• Successfully addressed the challenge of poor cell retention in porous scaffolds.
• Validated the technique's efficacy in improving cell distribution and density.

Conclusions:

• Serum preincubation is an effective strategy to enhance cell seeding in porous, additively manufactured scaffolds.
• This method offers a standardized approach for quality control in cellularized constructs.
• Facilitates the development of more robust and reliable tissue-engineered products.