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Related Experiment Video

Updated: May 20, 2025

Isolation of Primary Murine Retinal Ganglion Cells RGCs by Flow Cytometry
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R-28 cell-derived extracellular vesicles protect retinal ganglion cells in glaucoma.

Esmahan Durmaz1, Maryam Esmaelli1, Philip Lewis1

  • 1School of Optometry and Vision Sciences, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK.

Neural Regeneration Research
|March 27, 2025
PubMed
Summary

Extracellular vesicles from R-28 cells show promise for glaucoma treatment by improving retinal ganglion cell survival. Further research into miRNA changes may unlock new neuroprotective therapies for optic nerve damage.

Keywords:
R-28 cell lineextracellular vesiclesglaucomamiRNAneuroprotectionretinal ganglion cells

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Cell Biology

Background:

  • Glaucoma causes progressive optic nerve damage and retinal ganglion cell death.
  • Current treatments lack clinical efficacy for neuroprotection.
  • Stem cell-derived extracellular vesicles show potential for retinal ganglion cell neuroprotection.

Purpose of the Study:

  • To evaluate extracellular vesicles from the R-28 cell line as a novel therapeutic for retinal ganglion cell neuroprotection.
  • To assess the efficacy of R-28 extracellular vesicles in vitro and in an in vivo glaucoma model.
  • To investigate miRNA changes and potential pathways modulated by R-28 extracellular vesicles.

Main Methods:

  • Isolation and characterization of extracellular vesicles from R-28 cells.
  • In vitro and in vivo testing of R-28 extracellular vesicles for retinal ganglion cell survival and axon preservation.
  • Assessment of neuroprotective capacity on human embryonic stem cell-derived retinal ganglion cells.
  • miRNA profiling and pathway prediction in treated retinal ganglion cells.

Main Results:

  • R-28 extracellular vesicles significantly improved retinal ganglion cell survival in vitro and in vivo.
  • Axon preservation was not significantly improved by R-28 extracellular vesicles.
  • R-28 extracellular vesicles demonstrated neuroprotection for human retinal ganglion cells.
  • Specific miRNA changes (hsa-miRNA-4443, hsa-miRNA-216a-5p, etc.) were observed, suggesting potential neuroprotective pathways.

Conclusions:

  • R-28 cell line-derived extracellular vesicles are a promising source for glaucoma neuroprotection.
  • These vesicles enhance retinal ganglion cell survival and show potential for human retinal ganglion cells.
  • Identified miRNA changes offer targets for future glaucoma therapies.