[Cultured skin cells interaction with polylactide surface coated by different collagen structures]

Area of Science:

• Biomaterials Science
• Cell Biology
• Tissue Engineering

Background:

• Polylactide (PLA) films are utilized in biomedical applications.
• Human keratinocyte cultivation requires optimized surface properties for effective cell growth.
• Collagen coating is a common strategy to enhance cell adhesion and proliferation.

Purpose of the Study:

• To optimize polylactide film surfaces for human keratinocyte cultivation.
• To investigate the effect of different collagen coating methods on surface morphology.
• To evaluate the impact of collagen structure on keratinocyte behavior.

Main Methods:

• Polylactide films were coated with collagen.
• Collagen coating methods were varied to achieve different surface structures.
• Human keratinocytes were cultured on the modified polylactide surfaces.
• Keratinocyte alignment and cytoskeleton organization were analyzed.

Main Results:

• The method of collagen application significantly influenced its distribution and structure on the polylactide surface.
• Collagen distribution on the polylactide film affected human keratinocyte growth.
• Fibrillar collagen coatings promoted more uniform keratinocyte distribution than molecular collagen coatings.
• Keratinocyte cytoskeleton organization was influenced by the collagen structure.

Conclusions:

• Surface modification of polylactide films with collagen can be optimized for keratinocyte cultivation.
• Fibrillar collagen structures provide a more favorable microenvironment for keratinocyte distribution and organization compared to molecular collagen.
• These findings are relevant for developing advanced biomaterials for skin tissue engineering and regenerative medicine.