The vascular endothelial-cadherin promoter directs endothelial-specific expression in transgenic mice

• Published in: Blood Vol. 93; no. 1; pp. 184 - 192
• Main Authors: GORY, S, VERNET, M, LAURENT, M, DEJANA, E, DALMON, J, HUBER, P
• Format: Journal Article
• Language: English
• Published: Washington, DC The Americain Society of Hematology 1999
• Subjects: 5' Untranslated Regions; Animals; Antigens, CD; Biological and medical sciences; Cadherins - analysis; Cadherins - biosynthesis; Cadherins - genetics; Cattle; Cell Line; Cells, Cultured; Cloning, Molecular; Embryology: invertebrates and vertebrates. Teratology; Endothelium, Vascular - chemistry; Endothelium, Vascular - embryology; Endothelium, Vascular - metabolism; Fundamental and applied biological sciences. Psychology; Gene Expression Regulation, Developmental; General aspects; General aspects. Development. Fetal membranes; Humans; Mice; Mice, Transgenic; Molecular Sequence Data; Promoter Regions, Genetic - genetics; Transgenes; Tumor Cells, Cultured; Vertebrata; Mammalia; Reporter gene; Mouse; Transcription promoter; Blood vessel; Rodentia; Cell adhesion molecule; Transgenic animal; Development; Cadherin; Gene expression
• ISSN: 0006-4971; 1528-0020
• DOI: 10.1182/blood.v93.1.184

Vascular endothelial-cadherin (VE-cadherin) is a calcium-dependent adhesive molecule, exclusively and constitutively expressed in endothelial cells. Analysis of the VE-cadherin promoter fused to a reporter gene in bovine aortic endothelial cells showed three major functional regions. The proximal region alone (-139, +24) promoted nonspecific transcription; the addition of the (-289, -140) and (-2226, -1190) domains abolished transcription in fibroblasts while expression in endothelial cells remained unchanged, suggesting that fragments (-2226, +24) and longer contain the full endogenous promoter activity. To study the transcriptional specificity of the promoter region in vivo, we generated transgenic mice carrying the chimeric construct containing the (-2486, +24) region. The promoter directed reporter expression in all examined organs of adult transgenic mice. During embryonic development, transgene expression was detected at the early steps of vasculogenesis. Later, the expression persisted during development of the vascular system and was restricted to the endothelial layer of the vessels. Together, these data provide evidence for specific regulatory regions within the VE-cadherin promoter. Furthermore, the identification of DNA sequences restricting gene expression to the endothelium has many potential applications for the development of animal models of cardiovascular or angiogenic diseases or for the delivery of therapeutic molecules.