Journal: PLoS ONE
Article Title: Wnts Enhance Neurotrophin-Induced Neuronal Differentiation in Adult Bone-Marrow-Derived Mesenchymal Stem Cells via Canonical and Noncanonical Signaling Pathways
doi: 10.1371/journal.pone.0104937
Figure Lengend Snippet: (A) mRNA levels of ChAT and DBH were examined in NT-induced hMSCs, and SP600125 (15 µM) and Wnt7a (2 µg/ml) or LiCl (4 mM) were added to NT-induced hMSCs at the same time. Levels were normalized to those in the NTs control (set to 1.0). Wnt7a, but not lithium, stimulated mRNA levels in NT-induced hMSCs, and SP600125 totally inhibited Wnt7a-induced ChAT and DBH expressions. Data are presented as the mean ± SD of one triplicate experiment that was representative of the three independent experiments. * p <0.05, ** p <0.01 (all vs. NTs). # p <0.05, ## p <0.01 (all vs. NTs+Wnt7a+SP600125). + p <0.05, ++ p <0.01 (all vs. NTs+LiCl+SP600125). (B) p4 NT-treated hMSCs were immunoblotted with ChAT, DBH, and GAPDH. The NT groups were treated with NTs for 14 days. The NTs+Wnt7a and NTs+lithium groups were treated with NTs for 7 days first, and then with NTs+Wnt7a or lithium for 7 days. DMEM groups served as controls. (C) Expression levels of MAP2 and SYN1 in NT-induced hMSCs with SP600125/Wnt7a or SP600125/LiCl are shown. SP600125 had no effect in MAP2 or SYN1 expression. Levels were normalized to those in NTs groups (set to 1.0). * p <0.05, ** p <0.01 (NTs vs. all groups). # p <0.05, ## p <0.01 (all vs. NTs+Wnt7a+SP600125). + p <0.05, ++ p <0.01 (all vs. NTs+LiCl+SP600125). (D) p4 NT-treated hMSCs were stained with ChAT (green) and DBH (red). NTs groups were treated with NTs for 14 days. The NTs+Wnt7a and NTs+lithium groups were treated with NTs for the first 7 days and then with NTs+Wnt7a or lithium for the next 7 days. In inhibitory groups, SP600125 was added with Wnt7a or lithium in NT-induced hMSCs at the same time. DAPI (blue) was used as a counterstain. DMEM groups were used as controls. The white bar represents 50 µm. (E) Percentages of ChAT-positive cells and DBH-positive cells among all DAPI-positive cells calculated from (D). All data are presented as the mean ± SD. * p <0.05, ** p <0.01 (all vs. NTs). # p <0.05, ## p <0.01 (all vs. NTs+Wnt7a+SP600125). + p <0.05, ++ p <0.01 (all vs. NTs+LiCl+SP600125). (F) As described in " ", mRNA levels of ChAT and DBH were examined by a qPCR. Levels were normalized to those in NTs groups (set to 1.0). * p <0.05, ** p <0.01 (NTs+Wnt7a vs. all groups). (G) Percentages of inhibition calculated from (E). Data are presented as the mean ± SD of one triplicate experiment that was representative of three independent experiments.
Article Snippet: hMSCs (passages 3–6) were fixed with 4% paraformaldehyde for 10 min, and were permeabilized with 0.02% Triton X-100 for 10 min, followed by blocking with 5% FBS for 1 h and incubation with primary antibodies for at least 1 h. The primary antibodies were as follows: rabbit anti-MAP2 polyclonal antibodies (1∶500; cat#AB5622, Chemicon); rabbit anti-synapsin-1 (SYN1) polyclonal antibodies (1∶500; cat#AB1543, Chemicon); mouse anti-choline acetyltransferase (ChAT) monoclonal antibodies (1∶500; clone 1E6, cat#MAB305, Chemicon); and rabbit anti-dopamine β-hydroxylase (DBH) polyclonal antibodies (1∶500; cat#AB1585, Chemicon); and mouse anti-β-catenin monoclonal antibodies (1∶500; clone 5H10, cat#MAB2081, Chemicon,).
Techniques: Expressing, Staining, Inhibition