Systematic name M2534
Brief description The '3/3 signature': genes consistently up-regulated in all three pools of normal mammary stem cells (defined by their ability to retain the dye PKH26).
Full description or abstract Pathways that govern stem cell (SC) function are often subverted in cancer. Here, we report the isolation to near purity of human normal mammary SCs (hNMSCs), from cultured mammospheres, on the basis of their ability to retain the lipophilic dye PKH26 as a consequence of their quiescent nature. PKH26-positive cells possess all the characteristics of hNMSCs. The transcriptional profile of PKH26-positive cells (hNMSC signature) was able to predict biological and molecular features of breast cancers. By using markers of the hNMSC signature, we prospectively isolated SCs from the normal gland and from breast tumors. Poorly differentiated (G3) cancers displayed higher content of prospectively isolated cancer SCs (CSCs) than did well-differentiated (G1) cancers. By comparing G3 and G1 tumors in xenotransplantation experiments, we directly demonstrated that G3s are enriched in CSCs. Our data support the notion that the heterogeneous phenotypical and molecular traits of human breast cancers are a function of their CSC content.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 20074520   Authors: Pece S,Tosoni D,Confalonieri S,Mazzarol G,Vecchi M,Ronzoni S,Bernard L,Viale G,Pelicci PG,Di Fiore PP
Exact source Table 1S: sheet=hNMSC-signature; I in all 3 pools
Related gene sets (show 1 additional gene sets from the source publication)

(show 18 gene sets from the same authors)
External links
Filtered by similarity ?
Source species Homo sapiens
Contributed by Arthur Liberzon (MSigDB Team)
Source platform or
identifier namespace
Dataset references (show 1 datasets)
Download gene set format: grp | gmt | xml | json | TSV metadata
Compute overlaps ? (show collections to investigate for overlap with this gene set)
Compendia expression profiles ? NG-CHM interactive heatmaps
(Please note that clustering takes a few seconds)
GTEx compendium
Human tissue compendium (Novartis)
Global Cancer Map (Broad Institute)
NCI-60 cell lines (National Cancer Institute)

Legacy heatmaps (PNG)
GTEx compendium
Human tissue compendium (Novartis)
Global Cancer Map (Broad Institute)
NCI-60 cell lines (National Cancer Institute)
Advanced query Further investigate these 140 genes
Gene families ? Categorize these 140 genes by gene family
Show members (show 195 source identifiers mapped to 140 genes)
Version history 5.0: Renamed from PECE_MAMMARY_STEM_CELL_DN

See MSigDB license terms here. Please note that certain gene sets have special access terms.