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          Institute: MPI für molekulare Zellbiologie und Genetik     Collection: Publikationen MPI-CBG 2011-arch     Display Documents



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ID: 585201.0, MPI für molekulare Zellbiologie und Genetik / Publikationen MPI-CBG 2011-arch
Completion of the epithelial to mesenchymal transition in zebrafish mesoderm requires Spadetail
Authors:Row, Richard H; Maître, Jean-Léon; Martin, Benjamin L; Stockinger, Petra; Heisenberg, Carl-Philipp; Kimelman, David
Date of Publication (YYYY-MM-DD):2011
Title of Journal:Developmental Biology
Volume:354
Issue / Number:1
Start Page:102
End Page:110
Copyright:not available
Audience:Experts Only
Intended Educational Use:No
Abstract / Description:The process of gastrulation is highly conserved across vertebrates on both the genetic and morphological levels, despite great variety in embryonic shape and speed of development. This mechanism spatially separates the germ layers and establishes the organizational foundation for future development. Mesodermal identity is specified in a superficial layer of cells, the epiblast, where cells maintain an epithelioid morphology. These cells involute to join the deeper hypoblast layer where they adopt a migratory, mesenchymal morphology. Expression of a cascade of related transcription factors orchestrates the parallel genetic transition from primitive to mature mesoderm. Although the early and late stages of this process are increasingly well understood, the transition between them has remained largely mysterious. We present here the first high resolution in vivo observations of the blebby transitional morphology of involuting mesodermal cells in a vertebrate embryo. We further demonstrate that the zebrafish spadetail mutation creates a reversible block in the maturation program, stalling cells in the transition state. This mutation creates an ideal system for dissecting the specific properties of cells undergoing the morphological transition of maturing mesoderm, as we demonstrate with a direct measurement of cell-cell adhesion.
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:thuem
Affiliations:MPI für molekulare Zellbiologie und Genetik
Identifiers:LOCALID:4731
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