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A Microscale-Optical Interface to Examine Electric Field-Induced Cell Motility Within Whole-Eye Facsimiles.

Sakshi Koul1, Luke A Devecka1, Mark C Pierce1

  • 1Department of Biomedical Engineering, Rutgers, The State University of New Jersey; Piscataway, NJ 08854 USA.

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Summary

This study introduces microscale systems and optical imaging to track donor stem cell infiltration for vision loss regenerative therapies. Electric field stimulation guided cell migration in 3D eye models, improving transplantation insights.

Keywords:
confocal microscopygalvanotaxisinfiltrationretinatransplantationvision loss

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Area of Science:

  • Regenerative Medicine
  • Ophthalmology
  • Biomedical Engineering

Background:

  • Microscale systems are underutilized in current regenerative therapies for vision loss.
  • Understanding donor stem cell infiltration is crucial for successful transplantation in ocular regenerative medicine.
  • In vitro cell systems combined with optical imaging offer novel methods to study cell behavior.

Purpose of the Study:

  • To investigate the potential of microscale systems and optical imaging in studying stem cell transplantation for vision restoration.
  • To develop and utilize an electric field (EF) stimulation device to guide cell migration within 3D eye models.
  • To assess the efficacy of confocal microscopy for rapid resolution of cell infiltration in ocular biomaterials.

Main Methods:

  • Development of a parallel eye device for electric field (EF) stimulation.
  • Synthesis of 3D eye facsimiles using various ocular biomaterials.
  • Application of confocal microscopy for rapid, high-resolution imaging of cell infiltration.
  • Analysis of EF-stimulated galvanotaxis of donor cells within the 3D models.

Main Results:

  • The study successfully demonstrated EF-stimulated galvanotaxis of donor cells within different depths of 3D eye facsimiles.
  • Confocal microscopy provided rapid resolution of cell infiltration, bypassing traditional cryostat sectioning.
  • Optical imaging achieved high-resolution z-stack images at depths below 500 microns.

Conclusions:

  • Paired microscale-optical systems can effectively elucidate understudied stem cell transplantation processes in ophthalmology.
  • This approach offers a promising method to improve future outcomes for patients undergoing vision loss regenerative therapies.
  • The developed system enhances the study of cell infiltration dynamics in engineered ocular tissues.