Reactive Oxygen Species-Responsive miR-210 Regulates Proliferation and Migration of Adipose-Derived Stem Cells via PTPN2 Hypoxia enhances the proliferation and migration of adipose-derived stem cells (ASCs) via the generation of reactive oxygen species (ROS). Therefore, this study primarily investigated whether or not ROS generation could regulate microRNA-210 (miR-210) expression, and increase proliferation/migration of ASCs. Various sources of ROS generation such as hypoxia, antimycin, rotenone, and platelet-derived growth factor-BB upregulated miR-210 expression, and increased the proliferation/migration of ASCs. [Cell Death Dis] Full Article AF-MSCs Fate Can Be Regulated by Culture Conditions In previous studies, scientists isolated and expanded fetal mesenchymal stem cells (MSCs) from second-trimester amniotic fluid (AF) and characterized them based on their phenotype, pluripotency and proteomic profile. In the present study, they investigated the plasticity of these cells based on their differentiation, dedifferentiation and transdifferentiation potential in vitro. [Cell Death Dis] Full Article Extracts of Adipose Derived Stem Cells Slows Progression in the R6/2 Model of Huntington’s Disease Researchers investigated effects of cell-free extracts of adipose-derived stem cell (ASCs-E) on R6/2 HD mouse model and neuronal cells. In R6/2 HD model, injection of ASCs-E improved the performance in Rotarod test. [PLoS One] Full Article Microvesicles Derived from Human Umbilical Cord Wharton’s Jelly Mesenchymal Stem Cells Attenuate Bladder Tumor Cell Growth In Vitro and In Vivo Researchers evaluated whether microvesicles (MVs) derived from human umbilical cord Wharton’s jelly mesenchymal stem cells (hWJMSCs) may inhibit bladder tumor T24 cells growth using cell culture and the BALB/c nu/nu mice xenograft model. Their data indicated that hWJMSC-MVs can inhibit T24 cells proliferative viability via cell cycle arrest and induce apoptosis in T24 cells in vitro and in vivo. [PLoS One] Full Article Differential MicroRNA Signature of Human Mesenchymal Stem Cells from Different Sources Reveals an “Environmental-Niche Memory” for Bone Marrow Stem Cells To identify microRNAs (miRNAs) that can discriminate among mesenchymal stem cells (MSCs), scientists performed a whole-genome comparative miRNA expression profiling analysis on adipose, bone marrow and cord blood derived MSCs, all three considered among the most promising in the field of regenerative medicine. miRNA expression patterns were very similar, meeting their extensive phenotypic and functional overlaps. [Exp Cell Res] Abstract Human Mesenchymal Stem Cells Suppress Donor CD4+ T Cell Proliferation and Reduce Pathology in a Humanized Mouse Model of Acute Graft-Versus-Host Disease A robust humanized mouse model of acute graft-versus-host disease based on delivery of human peripheral blood mononuclear cells to non-obese diabetic-severe combined immunodeficient interleukin-2rγnull mice was developed that allowed the exploration of the role of mesenchymal stem or stromal cells in cell therapy. [Clin Exp Immunol] Abstract Adipose-Derived Stromal Cells for the Reconstruction of a Human Vesical Equivalent Researchers present in vitro tissue-engineered vesical equivalents, built without the use of any exogenous matrix, able to sustain mechanical stress and to support the formation of a functional urothelium, i.e. able to display a barrier function similar to that of native tissue. [J Tissue Eng Regen M] Abstract Analysis of Oxygen-Dependent Cytokine Expression in Human Mesenchymal Stem Cells Derived from Umbilical Cord Investigators analyzed the oxygen-dependent cytokine expression of human mesenchymal stem cells derived from umbilical cord and attempted to link the results to the proliferation and differentiation capacities of these cells. Fibroblast growth factor-7, two growth factor receptors (vascular endothelial growth factor receptor 2 and stem cell factor receptor), and two growth-factor-binding proteins (insulin-like growth-factor-binding proteins 3 and 6) were over-expressed under hypoxic conditions, indicating that their signaling pathways participate in cell proliferation. [Cell Tissue Res] Abstract Role of Histone Deacetylase Inhibitors in the Aging of Human Umbilical Cord Mesenchymal Stem Cells Researchers investigated the effects of largazole or trichostatin A (TSA), a novel histone deacetylase inhibitor, against human umbilical cord (hUC)-mesenchymal stem cells (MSCs) aging. Results showed that low concentrations of largazole or TSA can significantly improve hUC-MSC proliferation and delay hUC-MSCs aging. [J Cell Biochem] Abstract In Vitro Characterization of Macrophage Interaction with Mesenchymal Stromal Cell – Hyaluronan Hydrogel Constructs Scientists investigated the interaction between mesenchymal stromal/stem cells, encapsulated in hyaluronan-based hydrogel, and differentiating macrophages as measured by extracellular matrix gene expression and cytokine, chemokine and growth factors concentrations. Following seven days, they identified upregulation of collagen-I, collagen-III, pro-collagen, and matrix metalloproteinase-9 genes compared to control conditions. [J Biomed Mater Res A] Abstract |