Notch1 signaling inhibits growth of EC109 esophageal carcinoma cells through downmodulation of HPV18 E6/E7 gene expression.
Acta Pharmacol Sin
; 30(2): 153-8, 2009 Feb.
Article
en En
| MEDLINE
| ID: mdl-19122673
ABSTRACT
AIM:
To investigate the role of the Notch1 signaling pathway in growth arrest of an esophageal carcinoma cell line (EC109) in vitro and the mechanism involved.METHODS:
An intracellular domain of Notch1 (ICN) was transfected into cultured EC109 cells by lipofectamine transfection. Subsequently, the proliferation of the transfected cells was measured by an MTT assay. Cell cycle distribution was analyzed by flow cytometry. Human papillomavirus type 18 (HPV18) E6/E7 mRNA expression was detected by RT-PCR, and p53 protein expression was detected by Western blot.RESULTS:
Activation of Notch1 signaling resulted in inhibition of EC109 cell proliferation with the induction of G(2)/M arrest, downmodulation of HPV18 E6/E7 gene expression, and upregulation of p53 expression.CONCLUSION:
Repression of HPV18 E6/E7 expression by Notch1 signaling results in the activation of p53-mediated pathways with concomitant growth suppression of HPV18-positive EC109 cells.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias Esofágicas
/
Transducción de Señal
/
Proteínas Oncogénicas Virales
/
Regulación de la Expresión Génica
/
Proteínas de Unión al ADN
/
Receptor Notch1
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Acta Pharmacol Sin
Asunto de la revista:
FARMACOLOGIA
Año:
2009
Tipo del documento:
Article
País de afiliación:
China