Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Llicència de publicació
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/108261
PI3 kinase inhibition improves vascular malformations in mouse models of hereditary haemorrhagic telangiectasia
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
Activin receptor-like kinase 1 (ALK1) is an endothelial serine-threonine kinase receptor for bone morphogenetic proteins (BMPs) 9 and 10. Inactivating mutations in the ALK1 gene cause hereditary haemorrhagic telangiectasia type 2 (HHT2), a disabling disease characterized by excessive angiogenesis with arteriovenous malformations (AVMs). Here we show that inducible, endothelial-specific homozygous Alk1 inactivation and BMP9/10 ligand blockade both lead to AVM formation in postnatal retinal vessels and internal organs including the gastrointestinal (GI) tract in mice. VEGF and PI3K/AKT signalling are increased on Alk1 deletion and BMP9/10 ligand blockade. Genetic deletion of the signal-transducing Vegfr2 receptor prevents excessive angiogenesis but does not fully revert AVM formation. In contrast, pharmacological PI3K inhibition efficiently prevents AVM formation and reverts established AVMs. Thus, Alk1 deletion leads to increased endothelial PI3K pathway activation that may be a novel target for the treatment of vascular lesions in HHT2.
Matèries (anglès)
Citació
Citació
OLA, Roxana, DUBRAC, Alexandre, HAN, Jinah, ZHANG, Feng, FANG, Jennifer s., LARRIVÉE, Bruno, LEE, Monica, URARTE, Ana a., KRAEHLING, Jan r., GENET, Gael, HIRSCHI, Karen k., SESSA, William c., VIÑALS CANALS, Francesc, GRAUPERA I GARCIA-MILÀ, Mariona, YAN, Minhong, YOUNG, Lawrence h., OH, Paul s., EICHMANN, Anne. PI3 kinase inhibition improves vascular malformations in mouse models of hereditary haemorrhagic telangiectasia. _Nature Communications_. 2016. Vol. 7, núm. 13650, pàgs. 1-12. [consulta: 21 de gener de 2026]. ISSN: 2041-1723. [Disponible a: https://hdl.handle.net/2445/108261]