Glioblastoma Stem Cells Are Regulated by Interleukin-8 Signaling in a Tumoral Perivascular Niche The authors engineered a scaffold-based culture system enabling brain endothelial cells to form vascular networks. Using this system, they demonstrated that vascular assembly induces cancer stem-like cell maintenance and growth in vitro and accelerates tumor growth in vivo through paracrine interleukin-8 signaling. [Cancer Res] Abstract Therapeutic Targeting of Constitutive Poly-ADP-Ribose Polymerase Activation Compromises Stem Cell Phenotype and Survival of Glioblastoma-Initiating Cells Researchers report that glioblastoma-initiating cells (GICs) are primed to handle additional stress due to basal activation of single-strand break repair, the main DNA damage response pathway activated by reactive oxygen species, compared with non-GICs. [Cell Death Diff] Abstract Reprogramming of Non-Genomic Estrogen Signaling by the Stemness Factor SOX2 Enhances the Tumor-Initiating Capacity of Breast Cancer Cells Investigators utilized an in vitro model of a SOX2-overexpressing cancer stem cell-like cellular state that was recently developed in their laboratory by employing Yamanaka’s nuclear reprogramming technology in the estrogen receptor α-positive MCF-7 breast cancer cell line. [Cell Cycle] Abstract A c-Met Inhibitor Increases the Chemosensitivity of Cancer Stem Cells to the Irinotecan in Gastric Carcinoma Investigators examined the combined effects of inhibitors against stemness signals, including c-Met inhibitor SU11274, and five anticancer drugs on the cancer stem cell proliferation and mRNA expression of chemoresistance-associated genes. [Br J Cancer] Abstract Rottlerin Induces Autophagy and Apoptosis in Prostate Cancer Stem Cells via PI3K/Akt/mTOR Signaling Pathway Investigators aimed to examine the molecular mechanisms by which rottlerin induces autophagy in prostate cancer stem cells. Autophagy was measured by the lipid modification of light chain-3 and the formation of autophagosomes. [Cancer Lett] Abstract Aldehyde Dehydrogenase 1 Identifies Cells with Cancer Stem Cell-Like Properties in a Human Renal Cell Carcinoma Cell Line Investigators used two different approaches, the traditional side population approach, and the enzymatic (aldehyde dehydrogenase 1) approach to identify cancer stem cell-like cell population in two renal cell carcinoma cell lines, ACHN and KRC/Y. [PLoS One] Full Article Amurensin G Enhances the Susceptibility to TRAIL-Mediated Cytotoxicity of Cancer Stem-Like Cells of HCT-15 Cells The sensitivity to TRAIL-induced cytotoxicity and the effect of amurensin G, a novel SIRT1 inhibitor, was examined using cancer stem cell-enriched fraction of HCT-15 human colon cancer cells. [Cancer Sci] Abstract Hypoxia Reduces CD138 Expression and Induces an Immature and Stem Cell-Like Transcriptional Program in Myeloma Cells Researchers examined whether the expression of CD138 and transcription factors occurred in myeloma cells under hypoxic conditions. Multiple myeloma cell lines (KMS-12BM and RPMI 8226) were cultured under normoxic or hypoxic conditions for up to 30 days. [Int J Oncol] Abstract | Full Article Identification of CD90 as a Marker for Lung Cancer Stem Cells in A549 and H446 Cell Lines The authors identified CD90 as a novel surface marker of cancer stem cells (CSCs) in lung cancer cells. Furthermore, they isolated CD90+ CSCs from lung cancer cell lines A549 and H446. [Oncol Rep] Abstract |