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Related Experiment Video

Updated: Oct 10, 2025

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Embedded bioprinting for designer 3D tissue constructs with complex structural organization.

Xiangbin Zeng1, Zijie Meng1, Jiankang He1

  • 1State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China; NMPA Key Lab for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an Jiaotong University, Xi'an, 710049, China.

Acta Biomaterialia
|December 7, 2021
PubMed
Summary
This summary is machine-generated.

Embedded bioprinting is a novel 3D printing technique that overcomes limitations of traditional methods for fabricating complex living tissues. This approach enables the creation of intricate, biomimetic structures using soft biomaterials, paving the way for engineered organs.

Keywords:
BiofabricationComplex structural organizationEmbedded bioprintingLiving tissue constructs

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Area of Science:

  • Biotechnology
  • Regenerative Medicine
  • Materials Science

Background:

  • Traditional 3D bioprinting struggles with fabricating intricate tissue structures from mechanically weak hydrogels.
  • Existing methods face challenges in replicating delicate, tissue-specific organizations essential for functional living constructs.

Purpose of the Study:

  • To provide a comprehensive review of embedded bioprinting techniques for fabricating complex tissue constructs.
  • To highlight recent innovations and applications of embedded bioprinting, including vascularized organ fabrication.
  • To discuss challenges and future perspectives for translating embedded bioprinting into clinical applications.

Main Methods:

  • Review of extrusion-based and light-based embedded bioprinting processes.
  • Introduction to working principles, bioinks, and supporting matrices used in embedded printing.
  • Discussion of the impact of processing parameters on printing resolution, shape fidelity, and biological functions.

Main Results:

  • Embedded bioprinting enables direct fabrication of complex structures from soft biomaterials within a supporting matrix.
  • This strategy significantly expands the range of usable bioinks, including extracellular matrix-like hydrogels.
  • Recent advancements include light-based volumetric bioprinting and the creation of functional vascularized organ constructs.

Conclusions:

  • Embedded bioprinting shows great promise for printing large vascularized tissues and organs with biomimetic architectures.
  • The technique overcomes limitations associated with mechanically weak biomaterials in traditional 3D bioprinting.
  • Further development is crucial for realizing the full potential of embedded bioprinting for regenerative medicine.