Fascin is involved in the chemotherapeutic resistance of breast cancer cells predominantly via the PI3K/Akt pathway.
Br J Cancer
; 111(8): 1552-61, 2014 Oct 14.
Article
en En
| MEDLINE
| ID: mdl-25117814
BACKGROUND: A major therapeutic challenge for breast cancer is the ability of cancer cells to evade killing of conventional chemotherapeutic agents. We have recently reported the actin-bundling protein (fascin) as a major regulator of breast cancer metastasis and survival. METHODS: Survival of breast cancer patients that received chemotherapy and xenograft tumour model was used to assess the effect of chemotherapy on fascin-positive and -negative breast cancer cells. Molecular and cellular assays were used to gain in-depth understanding of the relationship between fascin and chemoresistance. RESULTS: We showed a significant correlation between fascin expression and shorter survival in breast cancer patients who received chemotherapy. In xenograft experiments, fascin-positive cancer cells displayed significantly more resistance to chemotherapy-mediated apoptotic cell death than fascin-negative counterparts. This increased chemoresistance was at least partially mediated through PI3K/Akt signalling, and was paralleled by increased FAK phosphorylation, enhanced expression of the inhibitor of apoptosis proteins (XIAP and Livin) and suppression of the proapoptotic markers (caspase 9, caspase 3 and PARP). CONCLUSIONS: This is the first report to demonstrate fascin involvement in breast cancer chemotherapeutic resistance, supporting the development of fascin-targeting drugs for better treatment of chemoresistance breast cancer.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias de la Mama
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Proteínas Portadoras
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Resistencia a Antineoplásicos
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Fosfatidilinositol 3-Quinasas
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Proteínas Proto-Oncogénicas c-akt
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Proteínas de Microfilamentos
Límite:
Animals
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Female
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Humans
Idioma:
En
Revista:
Br J Cancer
Año:
2014
Tipo del documento:
Article
País de afiliación:
Arabia Saudita
Pais de publicación:
Reino Unido