A Non-woven Path: Electrospun Poly(lactic acid) Scaffolds for Kidney Tissue Engineering

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Nephrology

Background:

• Chronic kidney disease (CKD) is a significant global health burden.
• Current kidney tissue engineering approaches, including 2D cultures and decellularized tissues, have limitations.
• Polymer fabrication techniques offer novel avenues for kidney tissue engineering.

Purpose of the Study:

• To investigate the potential of electrospun poly(lactic acid) scaffolds for kidney tissue engineering.
• To assess the ability of these scaffolds to support diverse kidney cell populations.
• To evaluate cell viability and scaffold properties for CKD therapeutic development.

Main Methods:

• Isolation of primary rat kidney cells.
• Seeding cells onto electrospun poly(lactic acid) scaffolds.
• Characterization of cell populations using specific biomarkers (aquaporin-1, aquaporin-2, synaptopodin, von Willebrand factor).

Main Results:

• Scaffolds successfully sustained multi-population kidney cells, including proximal tubules, collecting ducts, glomerular epithelia, and endothelial cells.
• Cell viability was maintained regardless of scaffold fiber diameter.
• Electrospun scaffolds demonstrated high morphological control and superior mechanical properties compared to decellularized tissues.

Conclusions:

• Electrospun polymer scaffolds are suitable for kidney tissue engineering, supporting diverse cell types.
• These scaffolds offer advantages over decellularized tissues, including tunable degradation and enhanced structural control.
• This approach holds promise for advancing CKD research and developing potential therapeutic strategies.