Biofabrication Frontiers: Technological Innovations, Bioink Engineering, and Clinical Translation in 3D and 4D Bioprinting for Regenerative Medicine
1. Dania Lucas, Universidade de São Paulo, Brazil, Student, Brazil
2. Mariana nunes, Universidade Federal do Rio de Janeiro, Brazil, Professor, Nigeria
Three-dimensional (3D) bioprinting has rapidly evolved from a prototyping technology to a transformative platform in tissue engineering and regenerative medicine. By integrating biomaterials science, cellular biology, and advanced manufacturing, 3D bioprinting enables the precise fabrication of tissue-like constructs with spatial control over cells, biomolecules, and scaffold architecture. Recent advances have focused on high-resolution printing, development of functional bioinks, vascularization strategies, patient-specific models, and clinical translation. Moreover, the emergence of 4D bioprinting introduces dynamic, stimuli-responsive constructs capable of structural and functional evolution over time. This review synthesizes recent advancements in 3D and 4D bioprinting, emphasizing technological innovations, biodegradable scaffold fabrication for bone regeneration, bioink design strategies, cell source selection, and translational challenges. Current limitations, regulatory considerations, and future prospects toward personalized medicine and organ fabrication are also discussed. The review highlights how interdisciplinary collaboration is accelerating the clinical applicability of bioprinted tissues and reshaping the future landscape of regenerative healthcare.
3D bioprinting 4D bioprinting biofabrication tissue engineering regenerative medicine bioink engineering biodegradable scaffolds stem cell integration bone tissue regeneration
Three-dimensional and four-dimensional bioprinting technologies are reshaping the landscape of tissue engineering and regenerative medicine. Technological innovations, advanced bioink formulations, improved cell sourcing strategies, and growing clinical translation efforts collectively signal a paradigm shift in healthcare. While challenges remain in vascularization, scalability, and regulatory standardization, ongoing interdisciplinary research continues to address these barriers. The integration of high-resolution printing, biodegradable scaffold engineering, and personalized medicine frameworks suggests a promising future in which patient-specific tissue constructs and functional organ substitutes become clinically feasible realities.
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The author handled all aspects of the study, including its design, data collection, analysis, and manuscript preparation.
No specific financial support from public, commercial, or non-profit funding agencies was received for this research.
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There are no conflicts of interest to report from any of the authors.
I am grateful for the expertise and help provided by all who contributed to this study and manuscript, and for the comments from anonymous reviewers.
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