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Accession IconGSE89050

Gene expression profiling of three human prostate epithelial subpopulations

Organism Icon Homo sapiens
Sample Icon 9 Downloadable Samples
Technology Badge Icon Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)

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Description
The human prostate epithelium is predominantly comprised of two cell-types: basal and luminal. While basal cells exhibit significant progenitor activity in a variety of functional assays, luminal cells are depleted of this activity. Recent studies indicate that approximately 1% of luminal cells exhibit progenitor activity. We have discovered that differential expression of the glycoprotein CD38 can fractionate the luminal population into two subsets: CD38+ and CD38-low. In functional assays, the CD38-low luminal cells exhibit roughly 5-fold increased progenitor activity compared to the remaining CD38+ population. Therefore, we propose that CD38-low luminal cells represent an enriched luminal progenitor population while the CD38+ subset is predominantly comprised of mature non-progenitor luminal cells.
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