PUBLICATION
Osteoblasts pattern endothelium and somatosensory axons during zebrafish caudal fin organogenesis
- Authors
- Bump, R.G., Goo, C.E.A., Horton, E.C., Rasmussen, J.P.
- ID
- ZDB-PUB-220208-19
- Date
- 2022
- Source
- Development (Cambridge, England) 149(3): (Journal)
- Registered Authors
- Rasmussen, Jeff
- Keywords
- Danio rerio, Bone, Developmental biology, Neurovascular congruence, Somatosensory neuron, VEGFR
- MeSH Terms
-
- Animal Fins/growth & development
- Animal Fins/physiology*
- Animals
- Animals, Genetically Modified/growth & development
- Animals, Genetically Modified/metabolism
- Axons/metabolism*
- Endothelium/cytology
- Endothelium/metabolism*
- Intracellular Signaling Peptides and Proteins/genetics
- Intracellular Signaling Peptides and Proteins/metabolism
- Larva/growth & development
- Larva/metabolism
- Organogenesis/physiology*
- Osteoblasts/cytology
- Osteoblasts/metabolism
- Receptors, Vascular Endothelial Growth Factor/metabolism
- Sp7 Transcription Factor/metabolism
- Zebrafish/growth & development*
- Zebrafish/metabolism
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism
- PubMed
- 35129199 Full text @ Development
Citation
Bump, R.G., Goo, C.E.A., Horton, E.C., Rasmussen, J.P. (2022) Osteoblasts pattern endothelium and somatosensory axons during zebrafish caudal fin organogenesis. Development (Cambridge, England). 149(3):.
Abstract
Skeletal elements frequently associate with vasculature and somatosensory nerves, which regulate bone development and homeostasis. However, the deep, internal location of bones in many vertebrates has limited in vivo exploration of the neurovascular-bone relationship. Here, we use the zebrafish caudal fin, an optically accessible organ formed of repeating bony ray skeletal units, to determine the cellular relationship between nerves, bones and endothelium. In adult zebrafish, we establish the presence of somatosensory axons running through the inside of the bony fin rays, juxtaposed with osteoblasts on the inner hemiray surface. During development we show that the caudal fin progresses through sequential stages of endothelial plexus formation, bony ray addition, ray innervation and endothelial remodeling. Surprisingly, the initial stages of fin morphogenesis proceed normally in animals lacking either fin endothelium or somatosensory nerves. Instead, we find that sp7+ osteoblasts are required for endothelial remodeling and somatosensory axon innervation in the developing fin. Overall, this study demonstrates that the proximal neurovascular-bone relationship in the adult caudal fin is established during fin organogenesis and suggests that ray-associated osteoblasts pattern axons and endothelium.
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Human Disease / Model
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