Circulating Breast Tumor Cells Exhibit Dynamic Changes in Epithelial and Mesenchymal Composition Epithelial-mesenchymal transition (EMT) of adherent epithelial cells to a migratory mesenchymal state has been implicated in tumor metastasis in preclinical models. To investigate its role in human cancer, researchers characterized EMT in circulating tumor cells from breast cancer patients. [Science] Abstract | Press Release Expression of Intercellular Adhesion Molecule-1 by Hepatocellular Carcinoma Stem Cells and Circulating Tumor Cells Intercellular adhesion molecule-1 (ICAM1) is believed to be involved in metastasis of hepatocellular carcinoma (HCC) cells. Researchers investigated whether ICAM1 is a marker of HCC stem cells. [Gastroenterology] Abstract miR-7 Suppresses Brain Metastasis of Breast Cancer Stem-Like Cells by Modulating KLF4 Scientists found that cancer stem-like cells (CSCs) (CD24–/CD44+/ESA+) isolated from metastatic breast cell lines are significantly more metastatic than non-CSC populations in an organ-specific manner. [Cancer Res] Abstract | Press Release A CD90+ Tumor-Initiating Cell Population with an Aggressive Signature and Metastatic Capacity in Esophageal Cancer Researchers report a CD90+ cell population found in esophageal squamous cell carcinoma which is endowed with stem cell-like properties and high tumorigenic and metastatic potential. [Cancer Res] Abstract Lmo2 Induces Hematopoietic Stem Cell Like Features in T-Cell Progenitor Cells Prior to Leukemia LIM domain Only 2 (Lmo2) is frequently deregulated in sporadic and gene therapy-induced acute T-cell lymphoblastic leukemia where its overexpression is an important initiating mutational event. Researchers analyzed proliferation, differentiation, and cell death in CD2-Lmo2 transgenic thymic progenitor cells to understand the cellular effects of enforced Lmo2 expression. [Stem Cells] Abstract Resistance to DNA-Damaging Treatment in Non-Small Cell Lung Cancer Tumor-Initiating Cells Involves Reduced DNA-PK/ATM Activation and Diminished Cell Cycle Arrest Increasing evidence suggests that tumor-initiating cells, also called cancer stem cells, are partly responsible for resistance to DNA-damaging treatment. Researchers addressed if such a phenotype may contribute to radio- and cisplatin resistance in non-small cell lung cancer. [Cell Death Dis] Full Article Peroxisome Proliferator Activated Receptor-α/Hypoxia Inducible Factor-1α Interplay Sustains Carbonic Anhydrase IX and Apoliprotein E Expression in Breast Cancer Stem Cells Investigators report on the relationship between nuclear receptors activity and the modulation of the pro-inflammatory phenotype in breast cancer stem cells. [PLoS One] Full Article Evaluation of Characteristics of CD44+CD117+ Ovarian Cancer Stem Cells in Three Dimensional Basement Membrane Extract Scaffold versus Two Dimensional Monocultures The authors demonstrated that human epithelial ovarian cancer CD44+CD117+ cells possessed the properties of cancer stem cells that exhibited more chemoresistance in the three-dimensional culture than that of in two-dimensional one. [BMC Cell Biol] Full Article |