Diurnal retinal and choroidal gene expression patterns support a role for circadian biology in myopia pathogenesis

Author:

Stone Richard A.ORCID,Tobias John W.ORCID,Wei WenjieORCID,Schug JonathanORCID,Wang XiaORCID,Zhang LixinORCID,Iuvone P. MichaelORCID,Nickla Debora L.ORCID

Abstract

AbstractThe prevalence of myopia (nearsightedness) is increasing to alarming levels, but its etiology remains poorly understood. Because both laboratory and clinical findings suggest an etiologic role for circadian rhythms in myopia development, we assayed gene expression by RNA-Seq in retina and choroid at the onset of unilateral experimental myopia in chick, isolating tissues every 4 h during a single 24-h period from myopic and contralateral control eyes. Occluded versus open eye gene expression differences varied considerably over the 24-h sampling period, with some occurring at multiple times of day but with others showing differences at only a single investigated timepoint. Some of the genes identified in retina or choroid of chick myopia were previously identified as candidate genes for common human myopia. Like differentially expressed genes, pathways identified by Gene Set Enrichment Analysis also varied dramatically by sampling time. Considered with other laboratory data, human genetic and epidemiology data, these findings further implicate circadian events in myopia pathogenesis. The present results emphasize a need to include time of day in mechanistic studies of myopia and to assess circadian biology directly in trying to understand better the origin of myopia and to develop more effective therapies.

Funder

National Institutes of Health

Research to Prevent Blindness

Paul and Evanina Bell Mackall Foundation Trust

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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