PUBLICATION
Lineage restriction maintains a stable organizer cell population at the zebrafish midbrain-hindbrain boundary
- Authors
- Langenberg, T., and Brand, M.
- ID
- ZDB-PUB-050617-5
- Date
- 2005
- Source
- Development (Cambridge, England) 132(14): 3209-3216 (Journal)
- Registered Authors
- Brand, Michael, Langenberg, Tobias
- Keywords
- Midbrain-hindbrain boundary, Isthmic organizer, Lineage restriction, Neuromeres, segments, Zebrafish, Mesencephalon, Metencephalon, otx2, gbx1, fgf8
- MeSH Terms
-
- Animals
- Cell Lineage/genetics
- Cell Lineage/physiology*
- Gene Expression/physiology
- Genes, Reporter
- Iontophoresis
- Mesencephalon/cytology
- Mesencephalon/embryology*
- Organizers, Embryonic/cytology
- Organizers, Embryonic/embryology*
- Rhombencephalon/cytology
- Rhombencephalon/embryology*
- Time Factors
- Zebrafish/embryology*
- PubMed
- 15958515 Full text @ Development
Citation
Langenberg, T., and Brand, M. (2005) Lineage restriction maintains a stable organizer cell population at the zebrafish midbrain-hindbrain boundary. Development (Cambridge, England). 132(14):3209-3216.
Abstract
The vertebrate hindbrain is subdivided into segments, termed neuromeres, that are units of gene expression, cell differentiation and behavior. A key property of such segments is that cells show a restricted ability to mix across segment borders - termed lineage restriction. In order to address segmentation in the midbrain-hindbrain boundary (mhb) region, we have analyzed single cell behavior in the living embryo by acquiring time-lapse movies of the developing mhb region in a transgenic zebrafish line. We traced the movement of hundreds of nuclei, and by matching their position with the expression of a midbrain marker, we demonstrate that midbrain and hindbrain cells arise from two distinct cell populations. Single cell labeling and analysis of the distribution of their progeny shows that lineage restriction is probably established during late gastrulation stages. Our findings suggest that segmentation as an organizing principle in early brain development can be extended to the mhb region. We argue that lineage restriction serves to constrain the position of the mhb organizer cell population.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping