Research Article

Comparing the Gene Expression Profile of Stromal Cells from Human Cord Blood and Bone Marrow: Lack of the Typical “Bone” Signature in Cord Blood Cells

Figure 3

Lentiviral overexpression of BSP in two USSC cell lines. (a) Quantitative RT-PCR analysis of BSP gene expression (in undifferentiated cells) after overexpression in relation to the control cells (Mock). RPL13A was used as housekeeping gene. (b) Osteogenic differentiation experiments in overexpressed and Mock cells. After 14 days of differentiation, Von Kossa and Alizarin Red S staining were performed in the induced (+) and noninduced (−) cells. Mineralized areas are stained in brown/black or red, respectively. Scale bar: 200 μm. The results were confirmed in independent experiments; representative histological staining and the subsequent quantification of the bound Alizarin Red S-dye (c) are depicted. * to 0.05, significant (unpaired -test). BSP: integrin-binding sialoprotein RPL13A: ribosomal protein L13A.
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