Src: a potential target for the treatment of triple-negative breast cancer.
Ann Oncol
; 22(10): 2234-40, 2011 Oct.
Article
in En
| MEDLINE
| ID: mdl-21357651
ABSTRACT
BACKGROUND:
Triple-negative breast cancers lack expression of estrogen and progesterone receptors and overexpression of human epidermal growth factor receptor 2 (HER2). Unlike other subgroups of patients with breast cancer, targeted therapy is currently unavailable for these patients. The aim of this study was to investigate v-src sarcoma viral oncogene homolog (Src) as a potential target for the treatment of triple-negative breast cancer.METHODS:
Expression of Src was measured in 87 triple-negative and 93 non-triple-negative breast cancers. Dasatinib (an inhibitor of Src) was tested in a panel of breast cancer cell lines.RESULTS:
Cytoplasmic expression of Src was detected in 83 (95%) triple-negative samples versus 78 (84%) non-triple-negative samples (P = 0.012), while membrane Src was detected in 78% triple-negative compared with 38% of non-triple-negative specimens (P < 0.0001). Dasatinib inhibited growth in three of five triple-negative cell lines (IC(50) < 1 µM). Dasatinib combined with cisplatin was synergistic in the three dasatinib-sensitive cell lines (combination index < 0.9). Dasatinib, in combination with 5'-deoxy-5'-fluoruridine, displayed synergy or additivity. Moderate synergy was observed with docetaxel (Taxotere) in two cell lines but the combination was antagonistic in HCC-1143 cells.CONCLUSIONS:
We conclude that dasatinib with cisplatin is a rational drug combination for testing in triple-negative breast cancer.
Full text:
1
Database:
MEDLINE
Main subject:
Breast Neoplasms
/
Antineoplastic Combined Chemotherapy Protocols
/
Src-Family Kinases
Limits:
Female
/
Humans
/
Middle aged
Language:
En
Year:
2011
Type:
Article