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Sp3 is a broadly expressed transcription factor and is essential for appropriate skeletal ossification and maturation during bone development. Endochondral and intramembranous ossifications are impaired in Sp3-deficient mouse embryos.28 Most of the significantly upregulated genes (>5-fold, p http://www.selleckchem.com/products/cb-5083.html annotated as ECM and included a large group of genes involved in bone matrix assembly (Table 2A). Among these, we identified DCN (decorin), MFAP2 (microfibrillar-associated protein 2), BGN (biglycan), LUM (lumican), and LOXL4 (lysyl oxidase-like 4). In addition to these well-known bone matrix genes, we have identified two muscle-related genes: SGCD (��-sarcoglycan) and SGCE (��-sarcoglycan). They are part of a multimeric complex (including, in addition, ��-, ��-, and ��-sarcoglycan) http://www.selleckchem.com/products/a-1155463.html that associates with dystrophin, dystroglycan, and other proteins to constitute the larger dystrophin-glycoprotein complex at the muscle membrane of both skeletal and cardiac muscle.29, 30 A subset of genes known to be important in skeletal development was exclusively upregulated in hBMSC-TERT+Bone cells (see Table 2B), including CLEC3B (tetranectin), NPR3 (natriuretic peptide receptor C), TNFRSF11B (tumor necrosis factor receptor superfamily member 11b), DLX5 (distal-less homeo box 5), and POSTN (periostin). Impaired in vivo bone formation in hBMSC-TERT�CBone cells was associated with significant upregulation of a large number of immune-regulatory factors (>4-fold, p? http://www.selleck.cn/products/PD-0332991.html value of this molecular signature and to compare the novel molecular markers with the canonical osteoblastic markers, we examined the ex vivo gene expression of these genes in hBMSC-TERT-derived clonal cell lines with varying in vivo bone-forming capacity. We established 118 single-cell clones, and six of these clones were chosen for more extensive analysis based on the presence of uniform and distinct morphology (Fig. 2A). The clones were named DD8, AD10, BB10, CF1, CB4, and CD8 (see Fig. 2A).