Tumor invasion and metastasis are the primary drivers of cancer-related mortality. Therapies that have an ability to specifically target invasive and/or metastatic cells are anticipated to have a significant impact in the clinical management of advanced cancers.
Researchers at the NCI have developed a vaccine technology that stimulates the immune system to selectively destroy metastasizing cells. Brachyury, a master transcription factor that governs the epithelial-mesenchymal transition, was shown to be significantly overexpressed in primary and metastasizing tumors relative to normal human tissues. Stimulation of T cells with the Brachyury peptide promoted a robust immune response and the targeted lysis of invasive tumor cells. Brachyury overexpression has been demonstrated in a range of human tumors (breast, lung, colon and prostate, among others) suggesting that a therapeutic vaccine derived from this technology would be broadly applicable for the treatment of cancer.