Syndecan-1 (CD138) Modulates Triple-Negative Breast Cancer Stem Cell Properties via Regulation of LRP-6 and IL-6-Mediated STAT3 Signaling. - Ibrahim, Sherif A.; Hassan, Hebatallah; Vilardo, Laura; Kumar, Sampath Katakam; Kumar, Archana Vijaya; Kelsch, Reinhard; Schneider, Cornelia; Kiesel, Ludwig; Eich, Hans Theodor; Zucchi, Ileana; Reinbold, Rolland; Greve, Burkhard; et al. (PLoS ONE, 2013)