Retinal ganglion cells derived from retinal organoids – a contemporary model to study neurodegenerative retinal diseases.

Purpose: Neurodegenerative retinal diseases are a significant course for blindness. Diseases such as glaucoma, which is the leading course of irreversible blindness in the world, and other inner retinal conditions such as inherited mitochondrial neuropathies are poorly understood. The treatment options for these diseases are often limited and insufficient to prevent blindness. Common for most of these diseases is the loss of the retinal ganglion cells (RGC). Methods: To elucidate the underlying pathological and protective pathways in these inner retinal diseases, respectively, we aim to assess retinal organoids generated from patient‐specific induced pluripotent stem cells (iPSC) and their controls. We have previously established the method of extracting RGCs from our retinal organoids via magnetic‐activated cell sorting (MACS). Results: The subsequent characterization of these RGCs was performed using cell‐specific markers such as CD90, BRN3a and RBPMS via qPCR and immunocytochemistry. Electron microscopy was used to investigate the intracellular organelle conditions of the RGCs. Future experiments are aimed at respiratory capacity analysis, metabolomics, transcriptomics and proteomics of RGCs extracted via MACS from retinal organoids derived from patient iPSCs in hopes of identifying the differences and possibly cellular mechanisms contributing to neurodegenerative retinal diseases in patients compared to healthy controls. Conclusions: This could potentially lead to further understanding of disease mechanisms in patients with inner retinal diseases. In addition, this could establish a diseases model to test new treatment options such as neuroprotective drugs. [ABSTRACT FROM AUTHOR]