Independent Control of Topography for 3D Patterning of the ECM Microenvironment Biomimetic extracellular matrix (ECM) topographies driven by the magnetic-field-directed self-assembly of ECM protein-coated magnetic beads were fabricated. Researchers demonstrated that this 3D anisotropic matrix is able to guide the dendritic protrusion of cells. [Adv Mater] Full Article Harnessing Cellular-Derived Forces in Self-Assembled Microtissues to Control the Synthesis and Alignment of ECM Investigators developed a new method to control extracellular matrix (ECM) synthesis using self-assembled cells. Cells were seeded into custom designed, scaffold-free, micro-molds with fixed obstacles that harnessed and directed cell-mediated stresses. [Biomaterials] Abstract | Press Release Astrocytes Spatially Restrict VEGF Signaling by Polarized Secretion and Incorporation of VEGF into the Actively Assembling Extracellular Matrix Using a vascular endothelial growth factor (VEGF)-GFP fusion protein and confocal time-lapse microscopy, investigators observed the intracellular routing, secretion and immobilization of VEGF in scratch-activated living astrocytes. They found VEGF to be directly transported to cell-extracellular matrix attachments where it is incorporated into fibronectin fibrils. [Glia] Abstract Impaired Primary Mouse Myotube Formation on Crosslinked Type I Collagen Films Is Enhanced by Laminin and Entactin Scientists investigated the differentiation capacity of primary murine myoblasts on type I collagen films either untreated or modified with elastin, laminin, type IV collagen, laminin/entactin complex, combinations thereof, and Matrigel as a positive control. [Acta Biomater] Abstract Human Corneal Stromal Stem Cells Support Limbal Epithelial Cells Cultured on RAFT Tissue Equivalents Researchers re-created the cell-cell juxtaposition of the native environment in vitro, to provide a tool for investigation of epithelial-stromal cell interactions and to optimize human limbal epithelial cells culture conditions for potential therapeutic application. [Sci Rep] Full Article Muscle Tissue Engineering and Regeneration through Epigenetic Reprogramming and Scaffold Manipulation Scientists investigated the combined effects of matrices of variable rigidities and the treatment with the epigenetic modulator 5-azacytidine on reprogramming adipose-derived stromal cells into myoblast-like cells by utilizing tunable transglutaminase cross-linked gelatin in vitro and in vivo. [Sci Rep] Full Article Histone Methylation Levels Correlate with TGFBIp and Extracellular Matrix Gene Expression in Normal and Granular Corneal Dystrophy Type 2 Corneal Fibroblasts Scientists examined the role of chromatin markers such as histone H3 lysine methylation in transforming growth factor β-induced protein (TGFBIp) and extracellular matrix gene expression in normal and granular corneal dystrophy type 2-derived human corneal fibroblasts. [BMC Med Genomics] Full Article Comparative Profiling of Extractable Proteins in Extracellular Matrices of Porcine Cholecyst and Jejunum Intended for Preparation of Tissue Engineering Scaffolds Researchers identified the extractable proteins of extracellular matrices derived from porcine cholecyst and jejunum. Both the matrices contained several extracellular proteins including fibronectin, nidogen, decorin, and lumican that are known to participate in wound healing responses. [J Biomed Mater Res B Appl Biomater] Abstract Investigation of the Changes of Biophysical/Mechanical Characteristics of Differentiating Preosteoblasts In Vitro Researchers investigated biochemical (gene markers), biophysical (roughness), and biomechanical (stiffness) changes during the osteogenic differentiation of preosteoblasts on gelatin matrices. [Biomater Res] Full Article |