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Gene Expr Patterns. 2004 Jul;4(4):407-12.

Developmental regulation of EVF-1, a novel non-coding RNA transcribed upstream of the mouse Dlx6 gene.

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Program in Neurobiology, Department of Pediatrics, Children's Memorial Institute for Education and Research, Feinberg School of Medicine, Northwestern University, Box No. 209, 2430 North Halsted, Chicago, IL 60614, USA.


We previously reported that sonic hedgehog (Shh) induces the differentiation of rat ventral forebrain neurons expressing a novel marker, EVF-1 [Development 125 (1998) 5079]. In this report, we show that EVF-1 is a novel, developmentally regulated, non-coding RNA, with no homology to other known non-coding RNA sequences. Sequence analysis, in vitro translation, and comparison of the rat and mouse EVF-1 sequences suggest that EVF-1 contains no protein coding regions. Chromosomal location indicates that EVF-1 maps adjacent to the Dlx6 gene on mouse chromosome 6. RNA in situ hybridization of the embryonic rat forebrain shows that EVF-1 is expressed by immature neurons in the subventricular zone and its expression decreases during forebrain development. Whole mount in situ hybridization shows that EVF-1 is expressed at high levels in the branchial arches, ventral forebrain, olfactory bulb, and limbs. EVF-1 expression is linked to Shh and the Dlx family of proteins, genes with a demonstrated importance to ventral forebrain and craniofacial development.

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