embryogenesis, embryonic stem cells (ESCs), suppresses differentiation, suppressing c-Myc, inhibits growth, cancer cells and non-transformed cells, human tumor tissues, transcriptional activator PCBP1, CD44v6 expression, cell invasion in the cancer cell line HepG2, colon cancer, transcriptional coregulator HCF-1 (host cell factor 1), HCF-1, gene expression, primary tumors, metastases, SW620 colon cancer cells lines