Influence of farnesyl transferase inhibitor treatment on epidermal growth factor receptor status.
The radiolabelled growth factor [(123/125)I] I-hEGF is evaluated in vitro and in vivo to monitor the acute effects on the EGFR of R115777, a farnesyl transferase inhibitor (FTI). Upregulation of the EGFR after incubation with R115777 correlated linearly with FTI induced acute growth inhibition. Receptor mediated [125I] I-hEGF internalization decreased following R115777 treatment. Preliminary data suggest that the net in vivo effect is a decrease of [123I] I-hEGF uptake in the tumour. These fi...Expand abstract
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