Bioprinting stem cells: building physiological tissues one cell at a time

Area of Science:

• Biotechnology
• Regenerative Medicine
• Tissue Engineering

Background:

• Bioprinting enables the 3D spatial arrangement of cells, biomaterials, and growth factors for tissue repair and disease modeling.
• Current biofabrication often uses patient-specific cells, but challenges in handling and implantation limit regenerative potential.
• Stem cell printing offers a solution, overcoming hurdles associated with primary cell use for in vitro models and implantable constructs.

Purpose of the Study:

• To review recent advancements in 3D bioprinting for disease modeling and tissue repair.
• To highlight key tissue physiology concepts and stem cell applications in biofabrication.
• To analyze bioprinting technologies, biomaterial inks, and their influence on encapsulated stem cells.

Main Methods:

• Literature review of recent studies on innovative bioprinting approaches.
• Analysis of stem cell applications in biofabrication and tissue engineering.
• Examination of biomaterial inks and their impact on stem cell function and differentiation.

Main Results:

• Stem cell bioprinting addresses limitations of patient-specific cells, enabling functional in vitro models and implantable constructs.
• Advancements in biomaterial science have led to improved inks for stem cell encapsulation and printing.
• Successful efforts and clinical potentials exist for manufacturing functional physiological tissue substitutes for various organs.

Conclusions:

• Bioprinting with stem cells and advanced biomaterials shows significant promise for tissue regeneration and disease modeling.
• Further development in biomaterial inks is crucial for enhancing stem cell viability, differentiation, and construct functionality.
• Bioprinting holds considerable clinical potential for creating tissue substitutes for vasculature, heart, lung, liver, bone, and muscle.