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Three-Dimensional Bioprinting for Retinal Tissue Engineering.

Kevin Y Wu1, Rahma Osman2, Natalie Kearn2

  • 1Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada.

Biomimetics (Basel, Switzerland)
|December 27, 2024
PubMed
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Three-dimensional bioprinting (3DP) offers a promising approach for engineering complex tissues like the retina. Innovations in bioinks and scaffolding are advancing 3DP for vision restoration therapies.

Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Tissue Engineering

Background:

  • Three-dimensional bioprinting (3DP) is a key technology in regenerative medicine for fabricating complex tissues.
  • The retina, a highly specialized tissue, presents unique engineering challenges due to its intricate structure and cellular composition.

Purpose of the Study:

  • To review the principles, techniques, and applications of 3DP in retinal tissue engineering.
  • To highlight advancements in bioinks and biomaterials for recreating retinal complexity and function.
  • To discuss the potential of 3DP for disease modeling and drug development in ophthalmology.

Main Methods:

  • Overview of 3DP techniques (extrusion, droplet, laser-based).
  • Analysis of bioink formulations and scaffold materials for retinal applications.
Keywords:
3D bioprintingbioinksbiomimeticsbiomimicrymicrofluidicsorgan-on-a-chipregenerative medicineretinal cellsretinal disease modelsretinal tissue engineeringtissue scaffolds

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  • Exploration of emerging technologies like microfluidics and organ-on-a-chip.

    • Main Results:

    • 3DP can mimic the retina's cellular environment, structure, and biomechanical properties.
    • New bioinks enhance cell viability, printability, and stability for retinal constructs.
    • Bioprinted models show potential for replicating retinal diseases and aiding drug testing.

    Conclusions:

    • Despite challenges in clinical translation (e.g., immune compatibility), 3DP is advancing functional retinal tissue engineering.
    • Continued innovation in bioinks and scaffolding is crucial for personalized therapies and vision restoration.
    • Future research directions focus on refining 3DP for clinical applications in ophthalmology.