Microfluidic-basedVascularNetworkBioprinting

Why It Matters

The inability to create functional vascular networks is the primary hurdle preventing the engineering of large, complex organs like livers or kidneys, hindering solutions for millions suffering from organ failure. When successful, this technology would unlock the potential for truly functional, full-sized bioengineered organs, transforming transplant medicine and regenerative therapies for numerous diseases. Patients awaiting complex organ transplants and the entire field of tissue engineering win; current organ transplant infrastructure might need to adapt. Major technical challenges include maintaining long-term patency of printed vessels, achieving physiological blood flow dynamics, and seamlessly integrating bioprinted networks with host vasculature upon implantation. Widespread application in complex organ engineering is likely 15-25 years away, with simpler vascularized tissues potentially sooner. US academic institutions, particularly those with strong bioengineering departments, are leading this highly specialized race. A second-order consequence is the potential for new forms of advanced surgical repair where customized vascular networks are printed in situ to rapidly heal complex trauma or disease, far beyond current capabilities.