The present invention provides identification of inhibitors of inhibitors of differentiation (Id) for use in the treatment and prevention of diseases in mammals. The inhibitors of Id are effective alone in the treatment of a variety of cellular proliferative disorders including, but not limited to, diseases such as cancer, arthritis, age-related macular degeneration, psoriasis, neoplasms, angiomas, endometriosis, obesity, age-related macular degeneration, retinopathies, restenosis, scaring, fibrogenesis, fibrosis, cardiac remodeling, pulmonary fibrosis, scleroderma, failure associated with myocardial infarction, keloids, fibroid tumors and stenting. Additionally, these compounds are effective in blocking angiogenesis in tumor development, inducing apoptosis in malignant cells, inhibiting proliferation of cancer cells, increasing the effectiveness of chemotherapeutic agents, regulating transcriptional activity, reducing inflammation, increasing cellular differentiation, modulating ETS domain transcription factors, modulating PAX transcription factors, modulating TCF-ETS domain transcription factors, down regulating RAF-1/MAPK, upregulating JNK signaling pathways, and modulating cellular transformation.
