Impaired expression of hypoxia-inducible factor-1α in cystic fibrosis airway epithelial cells - a role for HIF-1 in the pathophysiology of CF?
J Cyst Fibros
; 10(4): 286-90, 2011 Jul.
Article
en En
| MEDLINE
| ID: mdl-21420913
ABSTRACT
The continuous infection-inflammation cycle plays a crucial role in the progression of cystic fibrosis (CF) disease. This noxious loop can be aggravated by a reduced partial pressure of oxygen in the blood, hypoxemia, present in CF patients. These interconnected factors, hypoxia, inflammation and infection, by stabilizing the hypoxia-inducible factor-1α (HIF-1α) protein subunit, are able to activate the transcription factor HIF-1. To date, data investigating the potential role of HIF-1 in CF are scarce. Our results demonstrated that HIF-1α protein expression was altered in CF-affected compared to CFTR-corrected airway epithelial cells in unsimulated and simulated hypoxic conditions. In contrast, when CF-affected cells were infected with Pseudomonas aeruginosa, HIF-1α was more stabilized compared to CFTR-corrected cells. As HIF-1 is linked with an efficient immune response and pulmonary complications in cystic fibrosis, this difference in HIF-1α protein levels could have an impact in the CF pathology and the persistence of P. aeruginosa infection.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Mucosa Respiratoria
/
Fibrosis Quística
/
Subunidad alfa del Factor 1 Inducible por Hipoxia
Límite:
Humans
Idioma:
En
Revista:
J Cyst Fibros
Año:
2011
Tipo del documento:
Article
País de afiliación:
Irlanda