PUBLICATION
The hypothalamic neuropeptide oxytocin is required for formation of the neurovascular interface of the pituitary
- Authors
- Gutnick, A., Blechman, J., Kaslin, J., Herwig, L., Belting, H.G., Affolter, M., Bonkowsky, J.L., and Levkowitz, G.
- ID
- ZDB-PUB-111027-47
- Date
- 2011
- Source
- Developmental Cell 21(4): 642-654 (Journal)
- Registered Authors
- Affolter, Markus, Belting, Heinz-Georg Paul (Henry), Blechman, Janna, Bonkowsky, Joshua, Gutnick, Amos, Kaslin, Jan, Levkowitz, Gil
- Keywords
- none
- MeSH Terms
-
- Hypothalamo-Hypophyseal System/cytology
- Hypothalamo-Hypophyseal System/drug effects
- Hypothalamo-Hypophyseal System/metabolism
- Green Fluorescent Proteins/genetics
- Green Fluorescent Proteins/metabolism
- Embryo, Nonmammalian/cytology
- Embryo, Nonmammalian/drug effects
- Embryo, Nonmammalian/metabolism
- Endothelium, Vascular/cytology
- Endothelium, Vascular/drug effects*
- Endothelium, Vascular/metabolism
- Immunoenzyme Techniques
- Oxytocics/pharmacology
- Pituitary Gland/blood supply*
- Pituitary Gland/cytology*
- Pituitary Gland/drug effects
- Zebrafish/embryology
- Animals
- Hypothalamus/drug effects*
- Hypothalamus/growth & development
- Hypothalamus/metabolism
- Oxytocin/pharmacology*
- Neurons/cytology
- Neurons/drug effects*
- Neurons/metabolism
- Gene Expression Regulation, Developmental/drug effects
- Cells, Cultured
- Animals, Genetically Modified
- PubMed
- 22014522 Full text @ Dev. Cell
Citation
Gutnick, A., Blechman, J., Kaslin, J., Herwig, L., Belting, H.G., Affolter, M., Bonkowsky, J.L., and Levkowitz, G. (2011) The hypothalamic neuropeptide oxytocin is required for formation of the neurovascular interface of the pituitary. Developmental Cell. 21(4):642-654.
Abstract
The hypothalamo-neurohypophyseal system (HNS) is the neurovascular structure through which the hypothalamic neuropeptides oxytocin and arginine-vasopressin exit the brain into the bloodstream, where they go on to affect peripheral physiology. Here, we investigate the molecular cues that regulate the neurovascular contact between hypothalamic axons and neurohypophyseal capillaries of the zebrafish. We developed a transgenic system in which both hypothalamic axons and neurohypophyseal vasculature can be analyzed in vivo. We identified the cellular organization of the zebrafish HNS as well as the dynamic processes that contribute to formation of the HNS neurovascular interface. We show that formation of this interface is regulated during development by local release of oxytocin, which affects endothelial morphogenesis. This cell communication process is essential for the establishment of a tight axovasal interface between the neurons and blood vessels of the HNS. We present a unique example of axons affecting endothelial morphogenesis through secretion of a neuropeptide.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping