title: From normal cell types to malignant phenotypes.
abstract: The phenotypic diversity of breast cancer has been proposed to result from different target cell types undergoing oncogenic transformation and giving rise to cancer stem cells. Global gene expression profiling revealed distinct molecular phenotypes and some of these signatures were held to reflect the cell of origin, with the basal carcinomas arising from basal/progenitor cells. Recent work challenges this view by providing evidence that luminal precursor cells are involved in the pathogenesis of basal breast cancers and has made new links between normal cell populations and molecular tumor phenotypes.
authors.affiliation: Ecole polytechnique fédérale de Lausanne, ISREC - Swiss Institute for Experimental Cancer Research, CH-1015 Lausanne, Switzerland. ozden.yalcin@epfl.ch.
authors.forename: Ozden
authors.initials: O
authors.lastname: Yalcin-Ozuysal
authors.forename: Cathrin
authors.initials: C
authors.lastname: Brisken
mesh_terms: D001943:Breast Neoplasms / Q000473:pathology*; D002471:Cell Transformation, Neoplastic / Q000473:pathology*; D005260:Female; D006801:Humans; D014411:Neoplastic Stem Cells / Q000473:pathology