PUBLICATION
Endothelial Semaphorin 3fb regulates Vegf pathway-mediated angiogenic sprouting
- Authors
- Watterston, C., Halabi, R., McFarlane, S., Childs, S.J.
- ID
- ZDB-PUB-210824-16
- Date
- 2021
- Source
- PLoS Genetics 17: e1009769 (Journal)
- Registered Authors
- Childs, Sarah J., Halabi, Rami, McFarlane, Sarah
- Keywords
- none
- MeSH Terms
-
- Vascular Endothelial Growth Factor Receptor-1
- Zebrafish/metabolism
- Receptors, Notch/metabolism
- Endothelium/metabolism
- Semaphorins/genetics
- Semaphorins/metabolism*
- Intracellular Signaling Peptides and Proteins/metabolism
- Animals
- Vascular Endothelial Growth Factor A/genetics
- Vascular Endothelial Growth Factor A/metabolism*
- Morphogenesis
- Neovascularization, Physiologic/genetics*
- Neovascularization, Physiologic/physiology
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism*
- Cell Movement
- Endothelial Cells/metabolism
- Vascular Endothelial Growth Factors/metabolism
- Vascular Endothelial Growth Factors/pharmacology
- Signal Transduction/physiology
- Membrane Proteins/metabolism
- PubMed
- 34424892 Full text @ PLoS Genet.
Citation
Watterston, C., Halabi, R., McFarlane, S., Childs, S.J. (2021) Endothelial Semaphorin 3fb regulates Vegf pathway-mediated angiogenic sprouting. PLoS Genetics. 17:e1009769.
Abstract
Vessel growth integrates diverse extrinsic signals with intrinsic signaling cascades to coordinate cell migration and sprouting morphogenesis. The pro-angiogenic effects of Vascular Endothelial Growth Factor (VEGF) are carefully controlled during sprouting to generate an efficiently patterned vascular network. We identify crosstalk between VEGF signaling and that of the secreted ligand Semaphorin 3fb (Sema3fb), one of two zebrafish paralogs of mammalian Sema3F. The sema3fb gene is expressed by endothelial cells in actively sprouting vessels. Loss of sema3fb results in abnormally wide and stunted intersegmental vessel artery sprouts. Although the sprouts initiate at the correct developmental time, they have a reduced migration speed. These sprouts have persistent filopodia and abnormally spaced nuclei suggesting dysregulated control of actin assembly. sema3fb mutants show simultaneously higher expression of pro-angiogenic (VEGF receptor 2 (vegfr2) and delta-like 4 (dll4)) and anti-angiogenic (soluble VEGF receptor 1 (svegfr1)/ soluble Fms Related Receptor Tyrosine Kinase 1 (sflt1)) pathway components. We show increased phospho-ERK staining in migrating angioblasts, consistent with enhanced Vegf activity. Reducing Vegfr2 kinase activity in sema3fb mutants rescues angiogenic sprouting. Our data suggest that Sema3fb plays a critical role in promoting endothelial sprouting through modulating the VEGF signaling pathway, acting as an autocrine cue that modulates intrinsic growth factor signaling.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping