cyclops Encodes a Nodal-Related Factor Involved in Midline Signaling

Ventral structures in the central nervous system are patterned by signals emanating from the underlying mesoderm as well as originating within the neuroectoderm. Mutations in the zebrafish, Danio rerio, are proving instrumental in dissecting these midline signals. The cyclops mutation leads to a los...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 1998-08, Vol.95 (17), p.9932-9937
Main Authors: Rebagliati, Michael R., Toyama, Reiko, Haffter, Pascal, Dawid, Igor B.
Format: Article
Language:English
Subjects:
Alleles
Amino Acid Sequence
Animals
Base Sequence
Biological Sciences
Body Patterning - genetics
Central nervous system
Central Nervous System - embryology
Cyclopes
Danio rerio
DNA
DNA Primers - genetics
DNA, Complementary - genetics
Embryonic structures
Embryos
Eye Abnormalities - embryology
Eye Abnormalities - genetics
Fish
Freshwater
Gene Expression Regulation, Developmental
Genetic mutation
Molecular Sequence Data
Mutation
Nervous system
Nodal Signaling Ligands
Phenotype
Phenotypes
Polymerase chain reaction
Prenatal development
Proteins
RNA
Signal Transduction - physiology
Transforming Growth Factor beta - genetics
Transforming Growth Factor beta - physiology
Zebrafish - embryology
Zebrafish - genetics
Zebrafish - physiology
Zebrafish Proteins
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ventral structures in the central nervous system are patterned by signals emanating from the underlying mesoderm as well as originating within the neuroectoderm. Mutations in the zebrafish, Danio rerio, are proving instrumental in dissecting these midline signals. The cyclops mutation leads to a loss of medial floor plate and to severe deficits in ventral forebrain development, leading to cyclopia. Here, we report that the cyclops locus encodes the nodal-related protein Ndr2, a member of the transforming growth factor type β superfamily of factors. The evidence includes identification of a missense mutation in the initiation codon and rescue of the cyclops phenotype by expression of ndr2 RNA, here renamed ``cyclops.'' Thus, in interaction with other molecules implicated in these processes such as sonic hedgehog and one-eyed-pinhead, cyclops is required for ventral midline patterning of the embryonic central nervous system.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.95.17.9932