PUBLICATION
Teleost HoxD and HoxA genes: comparison with tetrapods and functional evolution of the HOXD complex
- Authors
- van der, Hoeven, F., Sordino, P., Fraudeau, N., Izpisúa Belmonte, J.C., and Duboule, D.
- ID
- ZDB-PUB-970324-14
- Date
- 1996
- Source
- Mechanisms of Development 54(1): 9-21 (Journal)
- Registered Authors
- Duboule, Denis, Izpisúa Belmonte, Juan Carlos, Sordino, Paolo
- Keywords
- none
- MeSH Terms
-
- Chick Embryo
- Embryonic and Fetal Development/genetics
- In Situ Hybridization
- Gene Expression Regulation, Developmental
- Digestive System/embryology
- Digestive System/metabolism
- Species Specificity
- Mice
- Models, Biological
- Transcription Factors/biosynthesis
- Transcription Factors/genetics*
- Genes, Homeobox*
- Morphogenesis/genetics
- Amino Acid Sequence
- Sequence Alignment
- Sequence Homology, Amino Acid
- DNA, Complementary/genetics
- Zebrafish Proteins*
- Trans-Activators/biosynthesis
- Trans-Activators/genetics*
- Zebrafish/embryology
- Zebrafish/genetics*
- Molecular Sequence Data
- Vertebrates/classification
- Vertebrates/embryology
- Vertebrates/genetics*
- Animals
- Homeodomain Proteins/biosynthesis
- Homeodomain Proteins/genetics*
- Urogenital System/embryology
- Urogenital System/metabolism
- RNA Probes
- Evolution, Molecular*
- PubMed
- 8808402 Full text @ Mech. Dev.
Citation
van der, Hoeven, F., Sordino, P., Fraudeau, N., Izpisúa Belmonte, J.C., and Duboule, D. (1996) Teleost HoxD and HoxA genes: comparison with tetrapods and functional evolution of the HOXD complex. Mechanisms of Development. 54(1):9-21.
Abstract
In tetrapods, Hox genes are essential for the proper organization and development of axial structures. Experiments involving Hox gene inactivations have revealed their particularly important functions in the establishment of morphological transitions within metameric series such as the vertebral column. Teleost fish show a much simpler range of axial (trunk or appendicular) morphologies, which prompted us to investigate the nature of the Hox system in these lower vertebrates. Here, we show that fish have a family of Hox genes, very similar in both number and general organization, to that of tetrapods. Expression studies, carried out with HoxD and HoxA genes, showed that all vertebrates use the same general scheme, involving the colinear activation of gene expression in both space and time. Comparisons between tetrapods and fish allowed us to propose a model which accounts for the primary function of this gene family. In this model, a few ancestral Hox genes were involved in the determination of polarity in the digestive tract and were further recruited in more elaborate axial structures.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping