Home
Deutsch
Advanced Search
Browse by ...
Publication overview
Contact persons
Help
Publ. Version/Full Text Volltext
DOI
PMC
 |
Open Access Gold |
|
as soon as is submitted to ZB.
Genetic and physical interaction of Meis2, Pax3 and Pax7 during dorsal midbrain development.
BMC Dev. Biol. 12:10 (2012)
BACKGROUND: During early stages of brain development, secreted molecules, components of intracellular signaling pathways and transcriptional regulators act in positive and negative feed-back or feed-forward loops at the mid-hindbrain boundary. These genetic interactions are of central importance for the specification and subsequent development of the adjacent mid- and hindbrain. Much less, however, is known about the regulatory relationship and functional interaction of molecules that are expressed in the tectal anlage after tectal fate specification has taken place and tectal development has commenced. RESULTS: Here, we provide experimental evidence for reciprocal regulation and subsequent cooperation of the paired-type transcription factors Pax3, Pax7 and the TALE-homeodomain protein Meis2 in the tectal anlage. Using in ovo electroporation of the mesencephalic vesicle of chick embryos we show that (i) Pax3 and Pax7 mutually regulate each other's expression in the mesencephalic vesicle, (ii) Meis2 acts downstream of Pax3/7 and requires balanced expression levels of both proteins, and (iii) Meis2 physically interacts with Pax3 and Pax7. These results extend our previous observation that Meis2 cooperates with Otx2 in tectal development to include Pax3 and Pax7 as Meis2 interacting proteins in the tectal anlage. CONCLUSION: The results described here suggest a model in which interdependent regulatory loops involving Pax3 and Pax7 in the dorsal mesencephalic vesicle modulate Meis2 expression. Physical interaction with Meis2 may then confer tectal specificity to a wide range of otherwise broadly expressed transcriptional regulators, including Otx2, Pax3 and Pax7.
Altmetric
Additional Metrics?
Edit extra informations
Login
Publication type
Article: Journal article
Document type
Scientific Article
Keywords
QUAIL-CHICK CHIMERAS; DROSOPHILA EMBRYO; NEURAL CREST; TRANSCRIPTION ACTIVATION; HINDBRAIN BOUNDARY; ISTHMIC ORGANIZER; SONIC HEDGEHOG; EXPRESSION; INDUCTION; DOSAGE
e-ISSN
1471-213X
Journal
BMC Developmental Biology
Quellenangaben
Volume: 12,
Article Number: 10
Publisher
BioMed Central
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Developmental Genetics (IDG)