TAK1 Prevents Endothelial Apoptosis and Maintains Vascular Integrity.
Dev Cell
; 48(2): 151-166.e7, 2019 01 28.
Article
en En
| MEDLINE
| ID: mdl-30639056
TNF-α is a pleiotropic cytokine that has the potential to induce apoptosis under inflammation. How endothelial cells (ECs) are spared from this fate in inflammatory environments where TNF-α is present is not known. Here, we show that TGF-ß-activated kinase 1 (TAK1) ensures EC survival and maintains vascular integrity upon TNF-α stimulation. Endothelial-specific TAK1 knockout mice exhibit intestinal and liver hemorrhage due to EC apoptosis, leading to vascular destruction and rapid death. This EC apoptosis was induced by TNF-α from myeloid cells responding to intestinal microbiota. TNF-α secretion associated with inflammation also induced vascular defects in inflamed organs. Additionally, we determined that TAK1 deletion in tumor ECs resulted in blood vessel and hence tumor regression. Our results illuminate mechanisms ensuring survival of intestinal and liver ECs under physiological conditions and ECs of other organs under inflammatory conditions that could be exploited for anti-angiogenic therapy to treat cancer.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Quinasas Quinasa Quinasa PAM
/
Hepatocitos
/
Células Endoteliales
/
Inflamación
Límite:
Animals
Idioma:
En
Revista:
Dev Cell
Asunto de la revista:
EMBRIOLOGIA
Año:
2019
Tipo del documento:
Article
Pais de publicación:
Estados Unidos