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In situ three-dimensional printing for reparative and regenerative therapy.

Nureddin Ashammakhi1,2,3,4,5,6, Samad Ahadian7,8,9, Ippokratis Pountos10,11

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In situ 3D bioprinting fabricates tissue directly within the body, bypassing risks of traditional methods. This regenerative therapeutics approach promises custom grafts and enhanced tissue repair.

Keywords:
3D bioprintingBiofabricationBioinksIn situ 3D printingRegeneration

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Area of Science:

  • Regenerative Medicine
  • Biotechnology
  • Biomaterials Engineering

Background:

  • Three-dimensional (3D) bioprinting is a key biofabrication technology for creating engineered tissues.
  • Current methods involve in vitro fabrication of grafts, posing safety risks and requiring complex procedures for in vivo implantation.
  • Maintaining structural integrity of ex vivo fabricated tissues remains a significant challenge.

Purpose of the Study:

  • To explore the concept and potential of in situ 3D bioprinting for regenerative therapeutics.
  • To review existing literature on in situ 3D bioprinting techniques and applications.
  • To identify future directions and challenges in the field of in situ 3D bioprinting.

Main Methods:

  • Literature review of studies reporting on in situ 3D bioprinting.
  • Analysis of the advantages of direct in vivo printing compared to traditional in vitro bioprinting.
  • Discussion of the integration of patient-specific cells and the utilization of the body's microenvironment.

Main Results:

  • In situ 3D bioprinting enables direct fabrication of tissue constructs at the site of injury or defect.
  • This approach allows for the creation of custom-fit grafts using patient-derived cells.
  • Leveraging the in vivo microenvironment facilitates natural tissue maturation and regeneration.

Conclusions:

  • In situ 3D bioprinting offers a promising alternative to conventional bioprinting, mitigating safety concerns and improving graft integration.
  • The technology holds potential for precise defect repair and enhanced tissue regeneration by utilizing the body's own healing capabilities.
  • Further research and development are expected to drive significant advancements and adoption in various biomedical fields.