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Related Experiment Video

Updated: Jul 12, 2025

Adapting the Electrospinning Process to Provide Three Unique Environments for a Tri-layered In Vitro Model of the Airway Wall
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Cryo-Electrospinning Generates Highly Porous Fiber Scaffolds Which Improves Trabecular Meshwork Cell Infiltration.

Devon J Crouch1, Carl M Sheridan1, Julia G Behnsen2

  • 1Department of Eye and Vision Science, Institute of Life Course and Medical Sciences, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L7 8TX, UK.

Journal of Functional Biomaterials
|October 27, 2023
PubMed
Summary

Cryogenic electrospinning creates biomimetic trabecular meshwork scaffolds with larger pores, improving cell infiltration for potential glaucoma tissue engineering. This method better mimics natural tissue structure.

Keywords:
biomimicrycell attachmentcell infiltrationcryogenic electrospinningelectrospinningpolycaprolactonepore sizeporositythree dimensionaltrabecular meshwork

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Ophthalmology

Background:

  • Human trabecular meshwork (HTM) is crucial for aqueous humor outflow and preventing glaucoma.
  • Dysfunctional HTM leads to vision loss, necessitating tissue-engineered replacements.
  • Current tissue engineering approaches require biomimetic scaffolds that replicate HTM structure.

Purpose of the Study:

  • To develop a biomimetic scaffold for trabecular meshwork tissue engineering using electrospinning.
  • To compare conventional electrospinning with cryogenic electrospinning for scaffold fabrication.
  • To evaluate scaffold structural properties and cellular infiltration for potential glaucoma treatment.

Main Methods:

  • Conventional electrospinning and cryogenic electrospinning techniques were employed.
  • Scaffolds were characterized for pore size, porosity, and thickness.
  • Attachment and infiltration of a human trabecular meshwork cell line (NTM5) were assessed over seven days.

Main Results:

  • Cryogenic electrospinning produced scaffolds with increased inter-fiber spacing due to ice crystal formation.
  • Cryo-scaffolds exhibited structural characteristics (pore size, porosity, thickness) closer to native HTM.
  • Cell attachment was unaffected by fabrication method, but cryo-scaffolds facilitated deep cell infiltration.

Conclusions:

  • Cryogenic electrospinning is a promising method for creating biomimetic trabecular meshwork scaffolds.
  • These cryo-scaffolds show potential as advanced 3D in vitro models for studying glaucoma.
  • The technology holds promise for future development of tissue-engineered devices for glaucoma therapy.