Expression of Oct4, Nanog and Prdm14 mRNA and functional relevance. The MSCs expressed significantly more Oct4 mRNA than Nanog or Prdm14 mRNA; however, no significant difference in Nanog mRNA expression compared to Prdm14 mRNA expression could be detected (n = 28 except for Prdm14 (n = 23)) (A). Compared to pluripotent HUES9 cells and pluripotent NCCIT cells the expression of Oct4 mRNA, Nanog mRNA and Prdm14 mRNA was much lower in MSCs (B-D). Compared to NCCIT cells the HUES9 cells expressed more Oct4 mRNA, Nanog mRNA and Prdm14 mRNA (B-D). ANOVA analysis of variance followed by Tukey’s Multiple Comparison Test (*P <0.05; ***P <0.001). Error bars: SD. No correlation of the expression of Oct4, Nanog and Prdm14 mRNA to donor age (n = 28 except for Prdm14 (n = 23)) (E-G) or any gender-related differences could be detected (n = 28 except for Prdm14 (n = 23)) (H-J). The clonogenic potential of MSCs correlated positively to the expression of Prdm14 mRNA (n = 18) but not to Oct4 (n = 24) or Nanog mRNA (n = 24) (K-M). Two-tailed Student’s t-test and Spearman two-tailed correlation test (**P <0.01). Error bars: SD.
Siegel et al. BMC Medicine 2013 11:146 doi:10.1186/1741-7015-11-146