Project description:SMS catalyzes the final step of spermine synthesis. The G56S variant causes the Snyder-Robinson-syndrome. We investigated the effect of the SMS G56S variant on primary murine bone marrow osteoblasts. We used microarray analysis to detail the global gene expression of primary murine bone marrow osteoblasts isolated from SMS-G56S/0 mice after 10 days of osteogenic differentiation.
Project description:In SMS-CTR cells, we identified genomewide binding sites of CASZ1b. The overexpression of CASZ1b in SMS-CTR cells led to a regional epigenetic modification.
Project description:The anaphylatoxin C5a is a potent mediator of innate immunity and promotes inflammation via its receptor C5aR1 upon complement system activation danger-associated molecular patterns. Both C5a and C5aR1 are thought to be contributing factors in inflammatory and infectious conditions of the bone. Bone fracture healing, for example, was significantly improved when applying a C5aR1-antagonist in a rodent model of severe systemic inflammation and osteoblasts were found to be target cells for C5a in this setting. Interestingly, osteoblasts up-regulate C5aR1 during osteogenic differentiation and after bone injury. Further, C5a induces inflammatory cytokines, such as IL-6, and the osteoclastogenic mediator RANKL in osteoblasts. However, the molecular mechanisms underlying C5a-C5aR1 signaling axis in osteoblasts remain unclear, and further targets of C5a are still elusive. Using microarray analysis, we analyzed intracellular events following C5aR1 activation in osteoblasts and defined up- or down-regulated genes and their belonging biological pathways.
Project description:The tyrosine kinase c-Src has a crucial role in maintaining osteoblast in a less differentiated status, as already described in the literature. We used microarrays to detail the global programme of gene expression in osteoblasts treated with a well known c-Src inhibitor (PP1).
Project description:LCM-RNA-Seq data obtained from Xenopus tropicalis chondrocytes and osteoblasts at different stages of differentiation -immature chondrocytes and mature (hypertrophic) chondrocytes- isolated from the ceratohyal. Osteoblasts isolated from the mandible (dentary bone).