ß-Arrestin-Mediated Angiotensin II Type 1 Receptor Activation Promotes Pulmonary Vascular Remodeling in Pulmonary Hypertension.
JACC Basic Transl Sci
; 6(11): 854-869, 2021 Nov.
Article
em En
| MEDLINE
| ID: mdl-34869949
ABSTRACT
Pulmonary arterial hypertension (PAH) is a disease of abnormal pulmonary vascular remodeling whose medical therapies are thought to primarily act as vasodilators but also may have effects on pulmonary vascular remodeling. The angiotensin II type 1 receptor (AT1R) is a G protein-coupled receptor that promotes vasoconstriction through heterotrimeric G proteins but also signals via ß-arrestins, which promote cardioprotective effects and vasodilation through promoting cell survival. We found that an AT1R ß-arrestin-biased agonist promoted vascular remodeling and worsened PAH, suggesting that the primary benefit of current PAH therapies is through pulmonary vascular reverse remodeling in addition to their vasodilation.
AT1R, Angiotensin II type 1 receptor; AngII, Angiotensin-2; Beta-arrestin; BrdU, bromodeoxyuridine; G proteincoupled receptor; GPCR, G proteincoupled receptor; LV, left ventricular; MCT, monocrotaline; PAH, pulmonary arterial hypertension; PASMCs, pulmonary artery smooth muscle cells; PBS, phosphate-buffered saline; PV, pressure-volume; RV, right ventricular; SMC, smooth muscle cell; TRV023, TRV120023; angiotensin; biased agonism; pulmonary arterial hypertension; rRNA, ribosomal RNA
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Base de dados:
MEDLINE
Idioma:
En
Revista:
JACC Basic Transl Sci
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Estados Unidos