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Module map of stem cell genes guides creation of epithelial cancer stem cells

ABSTRACT: Self-renewal is a hallmark of stem cells and cancer, but existence of a shared stemness program remains controversial. Here we construct a gene module map to systematically relate transcriptional programs in embryonic stem cells (ESCs), adult tissue stem cells, and human cancers. This map reveals two predominant gene modules that distinguish ESCs and adult tissue stem cells. The ESC-like transcriptional program is activated in diverse human epithelial cancers and strongly predicts metastasis and death. c-Myc, but not other oncogenes, is sufficient to reactivate the ESC-like program in normal and cancer cells. In primary human keratinocytes transformed by Ras and IkBa, c-Myc increases the fraction of tumor-initiating cells by 150-fold, enabling tumor formation and serial propagation with as few as 500 cells. c-Myc-enhanced tumor initiation is cell-autonomous and independent of genomic instability. Thus, activation of an ESC-like transcriptional program in differentiated adult cells may induce pathologic self-renewal characteristic of cancer stem cells. A genetic modification design type is where an organism(s) has had genetic material removed, rearranged, mutagenized or added, such as knock out. Keywords: genetic_modification_design, array CGH Overall design: Computed

INSTRUMENT(S): Print_1185

ORGANISM(S): Homo sapiens  

SUBMITTER: David Wong  

PROVIDER: GSE10423 | GEO | 2008-04-10



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