Publication

A comprehensive promoter landscape identifies a novel promoter for CD133 in restricted tissues, cancers, and stem cells.

Front Genet. 2013 Oct 29;4:209. doi: 10.3389/fgene.2013.00209.

Abstract

PROM1 is the gene encoding prominin-1 or CD133, an important cell surface marker for the isolation of both normal and cancer stem cells. PROM1 transcripts initiate at a range of transcription start sites (TSS) associated with distinct tissue and cancer expression profiles. Using high resolution Cap Analysis of Gene Expression (CAGE) sequencing we characterize TSS utilization across a broad range of normal and developmental tissues. We identify a novel proximal promoter (P6) within CD133(+) melanoma cell lines and stem cells. Additional exon array sampling finds P6 to be active in populations enriched for mesenchyme, neural stem cells and within CD133(+) enriched Ewing sarcomas. The P6 promoter is enriched with respect to previously characterized PROM1 promoters for a HMGI/Y (HMGA1) family transcription factor binding site motif and exhibits different epigenetic modifications relative to the canonical promoter region of PROM1.

Authors

Sompallae R, Hofmann O, Maher CA, Gedye C, Behren A, Vitezic M, Daub CO, Devalle S, Caballero OL, Carninci P, Hayashizaki Y, Lawlor ER, Cebon J, Hide W.

Institute Authors

Christopher Maher, Ph.D.