Induction of Cells with Cancer Stem Cell Properties from Nontumorigenic Human Mammary Epithelial Cells by Defined Reprogramming Factors Researchers demonstrated that the introduction of defined reprogramming factors (OCT4, SOX2, Klf4 and c-Myc) into MCF-10A nontumorigenic mammary epithelial cells, followed by partial differentiation, transforms the bulk of cells into tumorigenic CD44+/CD24low cells with cancer stem cell (CSC) properties, termed here as induced CSC-like-10A or iCSCL-10A cells. [Oncogene] Abstract Stem Cell CD44v Isoforms Promote Intestinal Cancer Formation in Apc(min) Mice Downstream of Wnt Signaling A prominent intestinal stem cell (ISC)-signature gene is the cancer stem cell marker CD44, which encodes various splice variants comprising a diverse repertoire of adhesion and signaling molecules. Using Lgr5 as ISC marker, researchers have fluorescence-activated cell sorting-purified ISCs to define their CD44 repertoire. Data identify CD44 variant isoforms (CD44v) as a component of the ISCs program critical for tumor initiation, and as potential treatment target in colorectal cancer. [Oncogene] Abstract Multiple Pluripotent Stem Cell Markers in Human Anaplastic Thyroid Cancer: The Putative Upstream Role of SOX-2 Investigators aimed to characterize cancer stem cells (CSCs) from ex vivo anaplastic thyroid carcinoma specimens by investigating the expression of several pluripotent stem cell markers and to evaluate in vitro drug resistance modifications after specific CSC transcription factor switch off. [Thyroid] Abstract FGFR2 Promotes Breast Tumorigenicity through Maintenance of Breast Tumor-Initiating Cells Data suggest that FGFR2 is essential in sustaining the breast tumor-initiating cell (TIC) pool through promotion of self-renewal and maintenance of bipotent TICs, and raise the possibility of FGFR2 inhibition as a strategy for anti-cancer therapy by eradicating breast TICs. [PLoS One] Full Article Is 1,25-Dihydroxyvitamin D3 Receptor Expression a Potential Achilles’ Heel of CD44+ Oral Squamous Cell Carcinoma Cells? Researchers provided evidence that decreased 1,25-dihydroxyvitamin D3 receptor (VDR) expression in oral squamous cell carcinomas (OSCC) might be associated with tumor relapse. Tumor cells of a putative CD44+ cancer stem cell compartment express VDR indicating a potential Achilles’ heel for the treatment of OSCC although, the results do not allow any conclusion on the function of VDR. [Target Oncol] Abstract Oncogenic Effects of miR-10b in Glioblastoma Stem Cells Scientists investigated the expression and function of microRNA-10b (miR-10b) in glioblastoma cells and stem cells. [J Neurooncol] Abstract PI3K/Akt and Stat3 Signaling Regulated by PTEN Control of the Cancer Stem Cell Population, Proliferation and Senescence in a Glioblastoma Cell Line Ectopic expression of PTEN in the U-87MG human glioblastoma-astrocytoma cell line was shown to result in the depletion of glioblastoma stem cells and to cause growth retardation and senescence. [Int J Oncol] Abstract The Combination of Sorafenib and Radiation Preferentially Inhibits Breast Cancer Stem Cells by Suppressing Hypoxia-Inducible Factor-1α Expression Researchers demonstrated that the preclinical therapeutic efficacy of combining the multikinase inhibitor sorafenib with radiation was more effective in hypoxia-exposed breast cancer stem cells. [Oncol Rep] Abstract | Download Full Article |