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Related Experiment Video

Updated: Dec 15, 2025

Combination of Microstereolithography and Electrospinning to Produce Membranes Equipped with Niches for Corneal Regeneration
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Biomimetic corneal stroma using electro-compacted collagen.

Zhi Chen1, Xiao Liu1, Jingjing You2

  • 1ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, Fairy Meadow, New South Wales 2519, Australia.

Acta Biomaterialia
|July 12, 2020
PubMed
Summary
This summary is machine-generated.

Researchers engineered a 3D corneal stroma model using electro-compacted collagen. This biomimetic scaffold supports human corneal stromal cells and mimics native cornea structure for tissue regeneration.

Keywords:
3D engineered corneal stromaBiomimeticCollagenHuman corneal stromal cells

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Area of Science:

  • Biomaterials Engineering
  • Tissue Engineering
  • Ophthalmology

Background:

  • Engineering functional corneal stroma is crucial for in vitro models and in vivo regeneration.
  • Existing bioengineered corneal stroma options are limited.
  • Mimicking the native corneal stroma's structure and function remains a challenge.

Purpose of the Study:

  • To develop a biomimetic 3D corneal stroma model (3D-CSM) using electro-compacted collagen (EC).
  • To assess the 3D-CSM's suitability for supporting human corneal stromal cells (hCSCs) and mimicking native corneal anatomy.
  • To evaluate the impact of aligned collagen fibrils on cellular phenotype and function.

Main Methods:

  • Fabrication of orthogonally oriented 3D corneal stroma models (3D-CSM) from pure electro-compacted collagen (EC).
  • Culturing primary human corneal stromal cells (hCSCs) within the EC constructs.
  • Analyzing cell orientation, gene expression (α-SMA, Thy-1, ALDH3), biodegradability, transparency, and glucose permeability.

Main Results:

  • The 3D-CSM successfully supported hCSCs, guiding their orientation via topographical cues from aligned collagen fibrils.
  • Constructs exhibited biodegradability, high transparency, and glucose permeability.
  • Aligned collagen fibrils correlated with downregulated myofibroblast markers (α-SMA, Thy-1) and upregulated keratocyte marker (ALDH3), indicating a quiescent cell phenotype.

Conclusions:

  • The 3D-CSM is the first pure collagen-based, biomimetic engineered corneal stroma with aligned fibrils.
  • The model effectively mimics native corneal stroma structure and supports a quiescent keratocyte phenotype.
  • This engineered stroma holds significant potential for corneal research, tissue regeneration, and functional cornea replacement.