Figure 1. An IGF gene signature is reversed by treatment of cancer xenografts and IGF-IR overexpressing NIH3T3 fibroblasts with anti-IGF-IR inhibitors.
Genes in the IGF-I gene signature derived from MCF-7 cells stimulated with IGF-I (31) were examined in A. a gene expression profile of neuroblastoma (SK-N-AS) xenografts treated with vehicle or an anti-IGF-R antibody and in B. IGF-IR transfected NIH3T3 fibroblasts treated with an IGF-IR small molecule inhibitor and in C. colon cancer xenografts treated with the small molecule inhibitor BMS-754807. For A-C, relative gene expression is represented using a yellow–blue color scale; patterns for genes that are upregulated (yellow) in the IGF gene signature are separate from the patterns for genes that are downregulated (blue)..