Development of a multi-scale nanofiber scaffold platform for structurally and functionally replicated artificial...

Area of Science:

• Neuroscience
• Tissue Engineering
• Biomedical Engineering

Background:

• Experimental models are vital for studying brain vascular diseases like ischemic stroke.
• Nanofiber scaffolds, common in tissue engineering, often deform, hindering uniform tissue creation, especially for small vessels.

Purpose of the Study:

• To develop a platform for reconstructing structurally and functionally accurate perforating arteries.
• To overcome challenges of nanofiber scaffold deformation in tissue engineering.

Main Methods:

• Utilized 3D-printed modules to integrate nanofibrous scaffolds into custom culture dishes, minimizing deformation.
• Analyzed nanofiber characteristics (SEM, contact angle, UTM) before and after integration.
• Co-cultured smooth muscle, endothelial, and astrocyte cells with Kalman filter-controlled medium pH and glucose.
• Assessed functional consistency under hydrogen peroxide-induced oxidative stress.

Main Results:

• Achieved uniform thickness, topography, mechanical properties, surface area, and pore characteristics of nanofibers.
• Demonstrated consistent co-culture of multiple cell types.
• Confirmed functional efficacy and consistency of artificial vessels under oxidative stress.
• Observed in vivo-like mRNA expression trends for key factors with minimal variation.

Conclusions:

• The developed platform successfully reconstructs structurally and functionally consistent perforating arteries.
• This model serves as a valuable research tool for studying oxidative stress in stroke.
• Enables mass production of reliable artificial vessels for neuroscience research.