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Bone formation and remodeling require continuous generation of osteoprogenitor cells from bone marrow stromal cells (MSC), which generate and respond to a variety of growth factors with putative roles in hematopoiesis and mesenchymal differentiation. In this study we examine the interaction of two such factors on the maturation of skeletal components. We previously reported that these factors, hepatocyte...
Osteoblastic cells in long-term culture undergo a phenotypic maturation process leading to extracellular matrix (ECM) production and bone nodule (BN) formation. Cell-to-cell communication via gap junctions (GJC) can be detected between osteoblastic cells within 24 h of plating. We evaluated, in long-term cultures of osteoblastic cells, the effect of inhibiting GJC on the phenotypic maturation process...
Previously we showed that physiological levels of parathyroid hormone (PTH) can increase the mineralization of extracellular matrix (ECM) by osteoblast-like cells in vitro. In this study, we assess the role of gap-junctional intercellular communication (GJC) in the PTH-enhanced mineralization of ECM in MC3T3-E1 cells, a murine culture model of osteoblastic differentiation. Messenger RNA and protein...
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