Peer-Reviewed Journal Details
Mandatory Fields
Stanicka, J;Rieger, L;O'Shea, S;Cox, O;Coleman, M;O'Flanagan, C;Addario, B;McCabe, N;Kennedy, R;O'Connor, R
2018
June
Oncogene
FES-related tyrosine kinase activates the insulin-like growth factor-1 receptor at sites of cell adhesion
Validated
Optional Fields
BREAST-CANCER CORTACTIN PHOSPHORYLATION CARCINOMA-CELLS IGF-1 RECEPTOR RESISTANCE PROTEIN SRC METASTASIS EXPRESSION MIGRATION
37
3131
3150
IGF-1 receptor (IGF-1R) and integrin cooperative signaling promotes cancer cell survival, proliferation, and motility, but whether this influences cancer progression and therapy responses is largely unknown. Here we investigated the non-receptor tyrosine adhesion kinase FES-related (FER), following its identification as a potential mediator of sensitivity to IGF-1R kinase inhibition in a functional siRNA screen. We found that FER and the IGF-1R co-locate in cells and can be coimmunoprecipitated. Ectopic FER expression strongly enhanced IGF-1R expression and phosphorylation on tyrosines 950 and 1131. FER phosphorylated these sites in an IGF-1R kinase-independent manner and also enhanced IGF-1-mediated phosphorylation of SHC, and activation of either AKT or MAPK-signaling pathways in different cells. The IGF-1R, beta 1 Integrin, FER, and its substrate cortactin were all observed to co-locate in cell adhesion complexes, the disruption of which reduced IGF-1R expression and activity. High FER expression correlates with phosphorylation of SHC in breast cancer cell lines and with a poor prognosis in patient cohorts. FER and SHC phosphorylation and IGF-1R expression could be suppressed with a known anaplastic lymphoma kinase inhibitor (AP26113) that shows high specificity for FER kinase. Overall, we conclude that FER enhances IGF-1R expression, phosphorylation, and signaling to promote cooperative growth and adhesion signaling that may facilitate cancer progression.
LONDON
0950-9232
10.1038/s41388-017-0113-z
Grant Details