Filamented Light (FLight) Biofabrication of Aligned Fibrillar Structures to Direct 3D Cell Organization Within...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Cellular organization is crucial for tissue function and is naturally regulated by aligned extracellular matrices.
• Fabricating patterned extracellular matrix fibers within hydrogels for controlled cellular organization remains a significant challenge in tissue engineering.

Purpose of the Study:

• To develop a novel 3D microfabrication technique for creating hydrogels with precise internal architectures.
• To demonstrate the ability of these engineered microgels to direct cellular organization for regenerative medicine applications.

Main Methods:

• Utilized filamented-light (FLight)-based 3D microfabrication to produce microgels with controlled internal structures.
• Encapsulated C2C12 muscle cells and photoreceptor cells within the fabricated microgels.

Main Results:

• Fibrillated rod-shaped microgels promoted highly aligned myotube formation in encapsulated muscle cells.
• Photoreceptor cells in rod-shaped microgels formed structures mimicking the outer retina.
• Injectable microgels conjugated with QK peptide facilitated in vitro and in vivo angiogenesis.

Conclusions:

• FLight-based 3D microfabrication enables the creation of microgels with precise internal architecture for directing cellular organization.
• This technique offers a promising tool for engineering tissue-like structures and developing injectable scaffolds for regenerative therapies.