Integrin ß8 facilitates tumor growth and drug resistance through a Y-box binding protein 1-dependent signaling pathway in bladder cancer.
Cancer Sci
; 111(7): 2423-2430, 2020 Jul.
Article
en En
| MEDLINE
| ID: mdl-32350965
ABSTRACT
The transmembrane receptors integrins are the bridges for cell-cell or cell-ECM interaction, which is strictly correlated to cancer development in several tumor types. Here, we revealed that integrin ß8 serves as a driver to mediate sustained growth of bladder cancer and development of drug resistance. The elevated expression of integrin ß8 was observed in highly malignant bladder tumor tissues from patients. The in vitro and in vivo results further indicated that integrin ß8 overexpression in Biu87/T24 bladder cancer could mediate and strengthen cell proliferation and resistance to mitomycin C and hydroxycamptothecin. Mechanistically, integrin ß8 on the cellular surface might recruit phosphorylated Y-box binding protein 1, leading to the activation of c-Myc and nuclear factor-κB signals. Pharmacological targeting of integrin ß8 by Arg-Gly-Asp-Ser efficiently suppressed sustained growth and drug resistance in bladder cancer cells. Our findings identified integrin ß8 as a marker of bladder cancer diagnosis and development, and provides an innovative approach for clinical bladder cancer therapy.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias de la Vejiga Urinaria
/
Transducción de Señal
/
Resistencia a Antineoplásicos
/
Cadenas beta de Integrinas
/
Proteína 1 de Unión a la Caja Y
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Cancer Sci
Año:
2020
Tipo del documento:
Article
País de afiliación:
China