3D bioprinting for bile duct tissue engineering: current status and prospects

Area of Science:

• Regenerative Medicine and Tissue Engineering
• Biotechnology and Biomedical Engineering

Background:

• Bile duct disorders present significant clinical challenges due to the biliary tree's complexity and limited regenerative capacity.
• Existing treatments for bile duct injuries, cholangiocarcinoma, and primary sclerosing cholangitis are often limited.
• Three-dimensional (3D) bioprinting has emerged as a novel approach for engineering bile duct tissues.

Purpose of the Study:

• To provide a comprehensive review of 3D bioprinting techniques applied to bile duct tissue engineering.
• To discuss fundamental principles, biomaterial selection, current achievements, challenges, and future perspectives in this field.
• To evaluate the potential for clinical translation of 3D bioprinted bile duct tissues.

Main Methods:

• Systematic review of recent technological advancements in 3D bioprinting for bile duct tissue engineering.
• Discussion of emerging innovations, including organoid-based strategies and microfluidic-assisted 3D printing.
• Evaluation of biomaterial selection criteria, cell sourcing, and biofabrication processes.

Main Results:

• 3D bioprinting allows for patient-specific geometries and precise spatial organization of cells and biomaterials.
• Technological breakthroughs have enabled the creation of complex bile duct structures with potential for functional integration.
• Organoid-based and microfluidic-assisted strategies show promise for enhanced tissue development and vascularization.

Conclusions:

• 3D bioprinting holds significant potential for advancing bile duct tissue engineering and treating related disorders.
• Key challenges include material biocompatibility, vascularization, immunological integration, standardization, and regulatory approval.
• Multidisciplinary collaboration and translational studies are crucial for realizing the clinical potential of this technology.