Nuclear receptor NR2E3 gene mutations distort human retinal laminar architecture and cause an unusual degeneration.

Abstract:

:Mutations in the nuclear receptor gene, NR2E3, cause a disorder of human retinal photoreceptor development characterized by hyperfunction and excess of the minority S (short wavelength or blue) cone photoreceptor type, but near absence of function of the majority rod receptor. NR2E3 disease can also progress to blindness. How the human retina accommodates mis-specified types and numbers of neurons and advances to retinal degeneration are unknown. We studied the retinal organization in vivo of patients with NR2E3 mutations. Early human NR2E3 disease with S cone hyperfunction showed thickened retinal layers within an otherwise normally structured retina. With visual loss, however, lamination was coarse and there was a strikingly thick and bulging appearance to the retina, localized to an annulus encircling the central fovea. This pattern was not found in other retinal degenerations. The abnormal laminar retinal architecture of early NR2E3 disease may be due in part to larger cells with an S cone phenotype in place of rods that failed to differentiate. The later-stage dysplastic appearance suggests a previously unrecognized proliferative response in human retinal degeneration.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Jacobson SG,Sumaroka A,Aleman TS,Cideciyan AV,Schwartz SB,Roman AJ,McInnes RR,Sheffield VC,Stone EM,Swaroop A,Wright AF

doi

10.1093/hmg/ddh198

subject

Has Abstract

pub_date

2004-09-01 00:00:00

pages

1893-902

issue

17

eissn

0964-6906

issn

1460-2083

pii

ddh198

journal_volume

13

pub_type

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