PUBLICATION

Disruption of acvrl1 increases endothelial cell number in zebrafish cranial vessels

Authors
Roman, B.L., Pham, V., Lawson, N.D., Kulik, M., Childs, S., Lekven, A.C., Garrity, D.M., Moon, R.T., Fishman, M.C., Lechleider, R.J., and Weinstein, B.M.
ID
ZDB-PUB-020820-13
Date
2002
Source
Development (Cambridge, England)   129(12): 3009-3019 (Journal)
Registered Authors
Childs, Sarah J., Fishman, Mark C., Garrity, Deborah, Lawson, Nathan, Lekven, Arne, Moon, Randall T., Pham, Van, Roman, Beth, Weinstein, Brant M.
Keywords
Acvrl1; hereditary hemorrhagic telangiectasia; endothelium; angiogenesis; zebrafish; violet beauregard
MeSH Terms
  • Activin Receptors/genetics*
  • Activin Receptors/metabolism*
  • Amino Acid Sequence
  • Animals
  • Animals, Genetically Modified
  • Blood Vessels/abnormalities
  • Blood Vessels/embryology*
  • Cerebrovascular Circulation
  • Chromosome Mapping
  • DNA-Binding Proteins/metabolism
  • Embryo, Nonmammalian
  • Gene Expression Regulation, Developmental
  • Head/blood supply*
  • Head/embryology
  • Humans
  • Molecular Sequence Data
  • Mutation
  • Phosphoproteins/metabolism
  • Sequence Homology, Amino Acid
  • Signal Transduction
  • Smad Proteins
  • Smad5 Protein
  • Smad8 Protein
  • Telangiectasia, Hereditary Hemorrhagic/genetics
  • Telangiectasia, Hereditary Hemorrhagic/physiopathology
  • Trans-Activators/metabolism
  • Zebrafish/embryology
  • Zebrafish/genetics*
  • Zebrafish Proteins/genetics*
  • Zebrafish Proteins/metabolism*
PubMed
12050147 Full text @ Development
Abstract
The zebrafish mutant violet beauregarde (vbg) can be identified at two days post-fertilization by an abnormal circulation pattern in which most blood cells flow through a limited number of dilated cranial vessels and fail to perfuse the trunk and tail. This phenotype cannot be explained by caudal vessel abnormalities or by a defect in cranial vessel patterning, but instead stems from an increase in endothelial cell number in specific cranial vessels. We show that vbg encodes activin receptor-like kinase 1 (Acvrl1; also known as Alk1), a TGFbeta type I receptor that is expressed predominantly in the endothelium of the vessels that become dilated in vbg mutants. Thus, vbg provides a model for the human autosomal dominant disorder, hereditary hemorrhagic telangiectasia type 2, in which disruption of ACVRL1 causes vessel malformations that may result in hemorrhage or stroke. Movies available on-line
Genes / Markers
Figures
Show all Figures
Expression
Phenotype
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping
Errata and Notes