[3D bioprinting: classification, evaluation, and application in vascular tissue engineering]

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Cardiovascular Engineering

Background:

• Cardiovascular diseases necessitate effective treatments, yet small-diameter artificial blood vessels for coronary artery bypass surgery remain scarce.
• Conventional vascular scaffold fabrication methods struggle with precise control over diameter, shape, and pore interconnectivity.
• Existing tissue engineering approaches for vascular grafts face significant limitations.

Purpose of the Study:

• To systematically review and evaluate 3D bioprinting technologies for vascular tissue engineering.
• To highlight the advancements and potential of 3D bioprinting in creating vascular scaffolds.
• To identify challenges and future research directions in this field.

Main Methods:

• Review of current 3D bioprinting techniques applicable to vascular tissue engineering.
• Analysis of research progress in utilizing 3D bioprinting for vascular scaffold fabrication.
• Evaluation of the advantages and limitations of 3D bioprinting in this context.

Main Results:

• 3D bioprinting allows for precise control over scaffold architecture, including nanoscale microstructure and porosity.
• It enables the accurate deposition of cells and biomaterials, mimicking natural vascular tissue structure.
• This technology offers enhanced capabilities for creating patient-specific vascular grafts.

Conclusions:

• 3D bioprinting presents a significant advancement over traditional methods for vascular tissue engineering.
• Addressing challenges like immune rejection of biomaterials is crucial for clinical translation.
• Further research is needed to optimize 3D bioprinting strategies for small-diameter vascular applications.