Cryptic boundaries in roof plate and choroid plexus identified by intersectional gene activation.

Abstract:

:The hindbrain roof plate and choroid plexus are essential organizing centers for inducing dorsal neuron fates and sustaining neuron function. To map the formation of these structures, we developed a broadly applicable, high resolution, recombinase-based method for mapping the fate of cells originating from coordinates defined by intersecting combinations of expressed genes. Using this method, we show that distinct regions of hindbrain roof plate originate from discrete subdomains of rhombencephalic neuroectoderm expressing Wnt1; that choroid plexus, a secretory epithelium important for patterning later-formed hindbrain structures and maintaining neuron function, derives from the same embryonic primordium as the hindbrain roof plate; and that, unlike the floor plate, these dorsal organizing centers develop in a patterned, segmental manner, built from lineage-restricted compartments. Our data suggest that the roof plate and choroid plexus may be formed of functional units that are capable of differentially organizing the generation of distinct neuronal cell types at different axial levels.

journal_name

Nat Genet

journal_title

Nature genetics

authors

Awatramani R,Soriano P,Rodriguez C,Mai JJ,Dymecki SM

doi

10.1038/ng1228

keywords:

subject

Has Abstract

pub_date

2003-09-01 00:00:00

pages

70-5

issue

1

eissn

1061-4036

issn

1546-1718

pii

ng1228

journal_volume

35

pub_type

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