Discover how light influences genetic expression and potentially impacts Angelman syndrome through groundbreaking research on the development of the mouse retina.
– by James
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Light activates Ube3a, an Angelman syndrome-associated gene, by mediating the chromatin structures during postnatal development of mouse retina.
Lin et al., J Neurochem 2023
DOI: 10.1111/jnc.16018
Key Findings:
- Study explores the effect of light exposure on UBE3A expression in mice, relevant to Angelman syndrome.
- UBE3A is maternally expressed in certain retinal cells and is crucial during early development.
- Extended exposure to white or blue light from birth to postnatal day 28 increases UBE3A levels in the retina, but not in the visual cortex.
- Both paternal and maternal UBE3A proteins are elevated in the retina of mice exposed to this light.
- Changes in chromatin structures at the Ube3a promoter suggest a mechanism for light-induced UBE3A expression.
Importance:
This research indicates that environmental factors, specifically light exposure, can influence the expression of a gene implicated in a neurodevelopmental disorder. It opens up potential non-pharmacological strategies for activating the paternal UBE3A gene, which could have therapeutic implications for Angelman syndrome.
Contribution to Literature:
The study adds to the current understanding of gene-environment interactions in neurodevelopmental disorders by demonstrating that light exposure can modulate gene expression in the central nervous system, a novel environmental approach that has not been previously examined for UBE3A.