Endothelial Cells Differentiated from Human Induced Pluripotent Stem Cells Form Aligned Network Structures in...

Area of Science:

• Biomedical Engineering
• Stem Cell Biology
• Regenerative Medicine

Background:

• Endothelial cells are crucial for peripheral nerve regeneration, forming aligned vasculature that bridges nerve gaps.
• Mimicking this aligned vasculature is key for developing effective nerve repair strategies.

Purpose of the Study:

• To differentiate endothelial cells from human induced pluripotent stem cells (hiPSCs).
• To incorporate these hiPSC-derived endothelial cells (hiPSC-ECs) into engineered neural tissue (EngNT).
• To create a 3D platform that mimics the aligned vasculature of nerve regeneration bridges.

Main Methods:

• hiPSCs were differentiated into endothelial cells using specific growth factors.
• hiPSC-ECs were integrated into collagen hydrogel EngNT via the gel aspiration-ejection (GAE) technique.
• Endothelial network formation and alignment within EngNT were assessed in vitro.

Main Results:

• hiPSC differentiation successfully yielded endothelial cells expressing specific markers (CD31, CD144, ENG, VEGFR2, VWF).
• hiPSC-ECs formed viable, aligned, lumen-containing tube-like structures within EngNT after four days.
• The EngNT constructs supported neurite outgrowth when co-cultured with dorsal root ganglion neurons.

Conclusions:

• This study rapidly generated EngNT with aligned endothelial tubes, mimicking early nerve regeneration structures.
• The developed 3D engineered tissue serves as a valuable platform for studying endothelial cell roles in nerve repair.
• This approach facilitates translational development for nerve regeneration therapies.