Hydrogels for Engineering of Perfusable Vascular Networks

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Hydrogels mimic the extracellular matrix, offering biocompatibility and biodegradability for 3D cell cultures.
• The size of cell-laden hydrogel constructs is limited by nutrient and oxygen diffusion.
• Vascularization is essential for fabricating larger, complex tissue constructs.

Purpose of the Study:

• This review discusses hydrogels for fabricating vascularized tissue constructs.
• It covers essential hydrogel properties and current engineering techniques for vascular networks.
• Future research directions for implantable vascularized tissues are explored.

Main Methods:

• Review of current literature on hydrogels in tissue engineering.
• Analysis of hydrogel properties relevant to vascular network formation.
• Examination of techniques for engineering perfusable vascular structures within hydrogels.

Main Results:

• Identifies key hydrogel types suitable for vascularized construct fabrication.
• Highlights critical properties for hydrogels supporting vascular network development.
• Summarizes existing methods for creating perfusable vascular channels in hydrogels.

Conclusions:

• Hydrogels are promising for vascularized tissue engineering.
• Engineering perfusable vascular networks within hydrogels is critical for implantation.
• Further research is needed to advance vascularized tissue fabrication for clinical use.