Swedish Team 3D Prints Functional Vascularized Artificial Skin

A team of researchers from Sweden has successfully created artificial skin featuring integrated, functional blood vessels using 3D printing technology. This breakthrough addresses a significant challenge in tissue engineering: the need for vascularization to sustain engineered tissues. Without a blood supply, larger or thicker engineered tissues cannot survive due to a lack of nutrient and oxygen delivery and waste removal.

The researchers utilized a bio-ink containing human endothelial cells, which are the cells that line the interior of blood vessels. By carefully designing the printing process and the bio-ink composition, they were able to guide these cells to self-assemble into vascular networks within the printed skin construct. These engineered vessels demonstrated the ability to perfuse, meaning blood or a blood substitute could flow through them.

This development is a crucial step towards creating more complex and viable artificial tissues for transplantation and research. The ability to replicate the intricate vascular system within engineered skin opens up possibilities for improved wound healing applications and the development of more realistic models for drug testing and disease study. The team's findings highlight the growing potential of additive manufacturing in regenerative medicine.