Summary
This study introduces a CRISPR-engineered Brn3b-mCherry reporter mouse that enables noninvasive longitudinal monitoring of retinal ganglion cells (RGCs) via Scanning Laser Ophthalmoscopy, providing a new tool for studying RGC development and degeneration. For lighting and circadian research, this tool could support investigations into how light exposure affects ipRGC populations over time, with implications for eye health and circadian photoentrainment.
Key Findings
- CRISPR engineering successfully generated a Brn3b-mCherry reporter mouse where mCherry faithfully recapitulates endogenous Brn3b expression without disrupting normal gene function.
- The reporter mouse enables noninvasive live imaging of RGCs using Scanning Laser Ophthalmoscopy (SLO), allowing longitudinal in vivo monitoring of RGC populations.
- Novel Brn3b expression was discovered in neuroectodermal cells of the optic stalk during early stages of eye development, a previously unreported finding.
Categories
Eye Health & Vision: This paper investigates retinal ganglion cell (RGC) biology using a novel reporter mouse, directly relevant to understanding RGC health, degeneration, and monitoring.
The Science of Light: RGCs, particularly ipRGCs, are critical photoreceptors for non-visual light detection; tools for monitoring RGC populations have implications for circadian photoentrainment research.
Author(s)
AM Miltner, Y Mercado-Ayon, SK Cheema
Publication Year
2019
Number of Citations
6
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