Autocrine IL-6 Drives Skin-Derived Mesenchymal Stem Cell Trafficking via Regulating Voltage-Gated Ca2+ Channels Researchers report that skin-derived mesenchymal stem cells (S-MSCs) secrete high levels of interleukin-6 (IL-6) in inflammatory conditions. Disruption of the il6 or its signaling transducer gp130 blocks voltage-gated calcium (Ca2+) channels critically required for cell contraction involved in the sequential adhesion and de-adhesion events during S-MSC migration. [Stem Cells] Abstract Substrate-Dependent Modulation of 3D Spheroid Morphology Self-Assembled in Mesenchymal Stem Cell-Endothelial Progenitor Cell Coculture The structural evolution of three-dimensional spheroids self-assembled from two different types of cells on selective biomaterials were demonstrated. The two types of cells involved in the self-assembly were human mesenchymal stem cells and endothelial progenitor cells. [Biomaterials] Abstract Histone Deacetylase Inhibition Destabilizes the Multi-Potent State of Uncommitted Adipose-Derived Mesenchymal Stromal Cells Scientists investigated whether manipulation of epigenetic events by the clinically relevant histone deacetylase inhibitor suberoylanilide hydroxamic acid alters differentiation of adipose-derived mesenchymal stromal cells (AMSCs). The multipotency of AMSCs was validated by their ability to differentiate into osteogenic, chondrogenic, and adipogenic lineages. [J Cell Physiol] Abstract Inhibition of Wnt/β-Catenin Signaling Promotes Epithelial Differentiation of Mesenchymal Stem Cells and Repairs Bleomycin-Induced Lung Injury In vitro experiments demonstrated that XAV939 could promote the differentiation of bone marrow-derived mesenchymal stem cells into an epithelium-like phenotype in a co-culture system. [Am J Physiol Cell Physiol] Abstract Cell-Mediated Degradation Regulates Human Mesenchymal Stem Cell Chondrogenesis and Hypertrophy in MMP-Sensitive Hyaluronic Acid Hydrogels Researchers found that human mesenchymal stem cells (hMSCs) encapsulated in matrix metalloproteinase (MMP)-sensitive hydrogels switched to a more spreaded morphology while cells in the MMP-insensitive hydrogels remained in round shape. Furthermore, hMSCs in the MMP-sensitive hydrogels expressed higher level of chondrogenic marker genes but lower level of hypertrophic genes compared to cells in the MMP-insensitive hydrogels. [PLoS One] Full Article Substrate and Strain Alter the Muscle-Derived Mesenchymal Stem Cell Secretome to Promote Myogenesis Murine skeletal muscle mesenchymal stem cell (mMSC) proliferation was not directly affected by substrate or strain; however, gene expression of growth and inflammatory factors and extracellular matrix proteins was downregulated in mMSCs grown on collagen-1 in a manner independent of strain. [Stem Cells Res Ther] Abstract | Full Article Generation of a Biomimetic Human Artificial Cornea Model Using Wharton’s Jelly Mesenchymal Stem Cells Scientists demonstrate for the first time the capability of human Wharton’s jelly stem cells to differentiate in vitro into cornea epithelial-like cells using a three dimensional model based on fibrin-agarose human bioengineered corneas. [Invest Ophthalmol Vis Sci] Abstract High-Resolution Molecular Validation of Self-Renewal and Spontaneous Differentiation in Adipose-Tissue Derived Human Mesenchymal Stem Cells Cultured in Human Platelet Lysate Researchers investigated the molecular phenotype of adipose-tissue derived human mesenchymal stromal/stem cells (AMSCs) that were either actively proliferating in platelet lysate or in a basal non-proliferative state. Flow cytometry combined with high-throughput RNA sequencing and RT-qPCR analyses validate that AMSCs express classic mesenchymal cell surface markers. [J Cell Biochem] Abstract Rewiring Mesenchymal Stem Cell Lineage Specification by Switching the Biophysical Microenvironment Researchers asked whether changing the biophysical aspects of the substrate could modulate the degree of mesenchymal stem cell (MSC) lineage specification. They explored two diverse differentiation outcomes: MSC osteogenesis and trans-differentiation to neuron-like cells. [Sci Rep] Full Article Human ESC-Derived MSCs Outperform Bone Marrow MSCs in the Treatment of an EAE Model of Multiple Sclerosis Researchers showed that mesenchymal stem cells derived from human embryonic stem cells (hES-MSCs) significantly reduce clinical symptoms and prevent neuronal demyelination in a mouse experimental autoimmune encephalitis (EAE) model of MS, and that the EAE disease-modifying effect of hES-MSCs is significantly greater than that of human bone-marrow-derived MSCs. [Stem Cells Rep] Full Article | Press Release Heading to ISSCR 2014 in Vancouver? Come Visit Connexon Creative at Booth #507 and Enter to Win $100 Amazon Gift Card! |