PUBLICATION
SH2 domain protein E and ABL signaling regulate blood vessel size
- Authors
- Schumacher, J.A., Wright, Z.A., Rufin Florat, D., Anand, S.K., Dasyani, M., Batta, S.P.R., Laverde, V., Ferrari, K., Klimkaite, L., Bredemeier, N.O., Gurung, S., Koller, G.M., Aguera, K.N., Chadwick, G.P., Johnson, R.D., Davis, G.E., Sumanas, S.
- ID
- ZDB-PUB-240110-4
- Date
- 2024
- Source
- PLoS Genetics 20: e1010851e1010851 (Journal)
- Registered Authors
- Ferrari, Kaitlin, Laverde, Valentina, Schumacher, Jennifer, Sumanas, Saulius
- Keywords
- none
- MeSH Terms
-
- Animals
- China
- Claudin-5
- Ethnicity
- Humans
- Signal Transduction/genetics
- Zebrafish*/genetics
- Zebrafish*/metabolism
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism
- src Homology Domains*
- PubMed
- 38190417 Full text @ PLoS Genet.
Citation
Schumacher, J.A., Wright, Z.A., Rufin Florat, D., Anand, S.K., Dasyani, M., Batta, S.P.R., Laverde, V., Ferrari, K., Klimkaite, L., Bredemeier, N.O., Gurung, S., Koller, G.M., Aguera, K.N., Chadwick, G.P., Johnson, R.D., Davis, G.E., Sumanas, S. (2024) SH2 domain protein E and ABL signaling regulate blood vessel size. PLoS Genetics. 20:e1010851e1010851.
Abstract
Blood vessels in different vascular beds vary in size, which is essential for their function and fluid flow along the vascular network. Molecular mechanisms involved in the formation of a vascular lumen of appropriate size, or tubulogenesis, are still only partially understood. Src homology 2 domain containing E (She) protein was previously identified in a screen for proteins that interact with Abelson (Abl)-kinase. However, its biological role has remained unknown. Here we demonstrate that She and Abl signaling regulate vessel size in zebrafish embryos and human endothelial cell culture. Zebrafish she mutants displayed increased endothelial cell number and enlarged lumen size of the dorsal aorta (DA) and defects in blood flow, eventually leading to the DA collapse. Vascular endothelial specific overexpression of she resulted in a reduced diameter of the DA, which correlated with the reduced arterial cell number and lower endothelial cell proliferation. Chemical inhibition of Abl signaling in zebrafish embryos caused a similar reduction in the DA diameter and alleviated the she mutant phenotype, suggesting that She acts as a negative regulator of Abl signaling. Enlargement of the DA size in she mutants correlated with an increased endothelial expression of claudin 5a (cldn5a), which encodes a protein enriched in tight junctions. Inhibition of cldn5a expression partially rescued the enlarged DA in she mutants, suggesting that She regulates DA size, in part, by promoting cldn5a expression. SHE knockdown in human endothelial umbilical vein cells resulted in a similar increase in the diameter of vascular tubes, and also increased phosphorylation of a known ABL downstream effector CRKL. These results argue that SHE functions as an evolutionarily conserved inhibitor of ABL signaling and regulates vessel and lumen size during vascular tubulogenesis.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping