Hippo signaling does it again: arbitrating cardiac fibroblast identity and activation.
Genes Dev
; 33(21-22): 1457-1459, 2019 11 01.
Article
em En
| MEDLINE
| ID: mdl-31676733
ABSTRACT
The Hippo pathway is an evolutionarily conserved kinase cascade that is fundamental for tissue development, homeostasis, and regeneration. In the developing mammalian heart, Hippo signaling regulates cardiomyocyte numbers and organ size. While cardiomyocytes in the adult heart are largely postmitotic, Hippo deficiency can increase proliferation of these cells and affect cardiac regenerative capacity. Recent studies have also shown that resident cardiac fibroblasts play a critical role in disease responsiveness and healing, and in this issue of Genes and Development, Xiao and colleagues (pp. 1491-1505) demonstrate that Hippo signaling also integrates the activity of fibroblasts in the heart. They show that Hippo signaling normally maintains the cardiac fibroblast in a resting state and, conversely, its inactivation during disease-related stress results in a spontaneous transition toward a myofibroblast state that underlies fibrosis and ventricular remodeling. This phenotypic switch is associated with increased cytokine signaling that promotes nonautonomous resident fibroblast and myeloid cell activation.
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Base de dados:
MEDLINE
Assunto principal:
Negociação
/
Proteínas Serina-Treonina Quinases
Limite:
Animals
Idioma:
En
Revista:
Genes Dev
Assunto da revista:
BIOLOGIA MOLECULAR
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Estados Unidos