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- W87302876 abstract "The aim of the study was to identify expression signatures unique for specific stages of osteoblast differentiation in order to improve our knowledge of the molecular mechanisms underlying bone repair and regeneration.We performed a microarray analysis on the whole transcriptome of human mesenchymal stem cells (hMSCs) obtained from the femoral canal of patients undergoing hip replacement. By defining different time-points within the differentiation and mineralization phases of hMSCs, temporal gene expression changes were visualised. Importantly, the gene expression of adherent bone marrow mononuclear cells, being the undifferentiated progenitors of bone cells, was used as reference. In addition, only the cultures able to form mineral nodules at the final time-point were considered for the gene expression analyses. To obtain the genes of our interest, we only focused on genes:i) whose expression was significantly upregulated;ii) which are involved in pathways or biological processes relevant to proliferation, differentiation and functions of bone cells;iii) which changed considerably during the different steps of differentiation and/or mineralization.Among the 213 genes identified as differentially expressed by microarray analysis, we selected 65 molecular markers related to specific steps of osteogenic differentiation. These markers are grouped into various gene clusters according to their involvement in processes which play a key role in bone cell biology such as angiogenesis, ossification, cell communication, development and in pathways like TGF beta and Wnt signaling pathways. Taken together, these results allow us to monitor hMSC cultures and to distinguish between different stages of differentiation and mineralization. The signatures represent a useful tool to analyse a broad spectrum of functions of hMSCs cultured on scaffolds, especially when the constructs are conceived for releasing growth factors or other signals to promote bone regeneration. Morover, this work will enhance our understanding of bone development and will enable us to recognize molecular defects that compromise normal bone function as occurs in pathological conditions." @default.
- W87302876 created "2016-06-24" @default.
- W87302876 creator A5006175155 @default.
- W87302876 date "2010-05-14" @default.
- W87302876 modified "2023-09-24" @default.
- W87302876 title "Controllo molecolare del differenziamento osteoblestico per applicazioni nel campo della rigenerazione del tessuto osseo" @default.
- W87302876 doi "https://doi.org/10.6092/unibo/amsdottorato/2684" @default.
- W87302876 hasPublicationYear "2010" @default.
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