ZFIN ID: ZDB-PUB-041006-8
Zebrafish Dpr2 inhibits mesoderm induction by promoting degradation of nodal receptors
Zhang, L., Zhou, H., Su, Y., Sun, Z., Zhang, H., Zhang, L., Zhang, Y., Ning, Y., Chen, Y.G., and Meng, A.
Date: 2004
Source: Science (New York, N.Y.)   306(5693): 114-117 (Journal)
Registered Authors: Meng, Anming, Sun, Zhihui, Su, Ying, Zhang, Haiwen, Zhang, Lixia
Keywords: none
MeSH Terms:
  • Activin Receptors, Type I/metabolism*
  • Amino Acid Sequence
  • Animals
  • Cell Line
  • Embryo, Nonmammalian/embryology
  • Embryo, Nonmammalian/metabolism*
  • Embryonic Induction*
  • Endosomes/metabolism
  • Fluorescent Antibody Technique
  • Gene Expression Profiling
  • Gene Expression Regulation, Developmental
  • Humans
  • In Situ Hybridization
  • Intracellular Signaling Peptides and Proteins
  • Lysosomes/metabolism
  • Mesoderm/physiology*
  • Molecular Sequence Data
  • Mutation
  • Nodal Signaling Ligands
  • Oligonucleotides, Antisense
  • Protein Serine-Threonine Kinases
  • Proteins/metabolism
  • Receptors, Transforming Growth Factor beta/metabolism*
  • Signal Transduction
  • Transforming Growth Factor beta/genetics
  • Transforming Growth Factor beta/metabolism
  • Zebrafish/embryology*
  • Zebrafish/genetics
  • Zebrafish/metabolism
  • Zebrafish Proteins/chemistry
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism*
PubMed: 15459392 Full text @ Science
Nodal proteins, members of the transforming growth factor-beta (TGFbeta) superfamily, have been identified as key endogenous mesoderm inducers in vertebrates. Precise control of Nodal signaling is essential for normal development of embryos. Here, we report that zebrafish dapper2 (dpr2) is expressed in mesoderm precursors during early embryogenesis and is positively regulated by Nodal signals. In vivo functional studies in zebrafish suggest that Dpr2 suppresses mesoderm induction activities of Nodal signaling. Dpr2 is localized in late endosomes, binds to the TGFbeta receptors ALK5 and ALK4, and accelerates lysosomal degradation of these receptors.