Itraconazole-Induced Inhibition on Human Esophageal Cancer Cell Growth Requires AMPK Activation.
Mol Cancer Ther
; 17(6): 1229-1239, 2018 06.
Article
em En
| MEDLINE
| ID: mdl-29592879
ABSTRACT
We here evaluated the antiesophageal cancer cell activity by the antifungal drug itraconazole. Our results show that µg/mL concentrations of itraconazole potently inhibited survival and proliferation of established (TE-1 and Eca-109) and primary human esophageal cancer cells. Itraconazole activated AMPK signaling, which was required for subsequent esophageal cancer cell death. Pharmacologic AMPK inhibition, AMPKα1 shRNA, or dominant negative mutation (T172A) almost completely abolished itraconazole-induced cytotoxicity against esophageal cancer cells. Significantly, itraconazole induced AMPK-dependent autophagic cell death (but not apoptosis) in esophageal cancer cells. Furthermore, AMPK activation by itraconazole induced multiple receptor tyrosine kinases (RTKs EGFR, PDGFRα, and PDGFRß), lysosomal translocation, and degradation to inhibit downstream Akt activation. In vivo, itraconazole oral gavage potently inhibited Eca-109 tumor growth in SCID mice. It was yet ineffective against AMPKα1 shRNA-expressing Eca-109 tumors. The in vivo growth of the primary human esophageal cancer cells was also significantly inhibited by itraconazole administration. AMPK activation, RTK degradation, and Akt inhibition were observed in itraconazole-treated tumors. Together, itraconazole inhibits esophageal cancer cell growth via activating AMPK signaling. Mol Cancer Ther; 17(6); 1229-39. ©2018 AACR.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Esofágicas
/
Transdução de Sinais
/
Itraconazol
/
Proteínas Quinases Ativadas por AMP
/
Antineoplásicos
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article