Figure 1. A, mRNA expression of PDK2 in MSCs by pBABE-PDK2; B, mRNA expression of PDK2 in MSCs by PDK2 knockdown with shPDK2; C, Protein expression of PDK2 in MSCs by PDK2 overexpression and knockdown. PDK2: pyruvate dehydrogenase kinase isoform 2; sh: short hairpin; NC: negative control; GAPDH: glyceraldehyde-3-phosphate dehydrogenase; MSC: mesenchymal stem cell. **P<0.01 (ANOVA).