Journal: PLoS ONE
Article Title: Cofactor-Activated Phosphorylation Is Required for Inhibition of Cortical Neuron Differentiation by Groucho/TLE1
doi: 10.1371/journal.pone.0008107
Figure Lengend Snippet: (A) Primary cultures of E13.0 mouse embryonic cortical progenitor cells were transfected with plasmids encoding either GFP alone (Control; top row) or a combination of GFP and wild type Gro/TLE1 (Gro/TLE1; bottom row). After fixation, cells were subjected to double-labeling analysis of the expression of GFP (green) and either Ki67, nestin, NeuN, or type III β-tubulin (βIIItubulin) (red), as indicated. Arrowheads point to examples of double-labeled cells. ( B–E ) Quantitation of the percentage of GFP-positive cells that co-expressed nestin (B), type III β-tubulin (C), Ki67 (D), or NeuN (E) in the absence or presence of wild type or mutated forms of Gro/TLE1. The anti-neurogenic activity of Gro/TLE1 was impaired by the SP mutations S286A, S289A, and S298A. Results are shown as the mean±the standard deviation (>500 cells were counted in each case; n≥5; **, P <0.001 using the Student's t test).
Article Snippet: Three days after transfection, cells were analyzed by immunocytochemistry using antibodies against the proliferating cell marker Ki67 (1∶200; BD Pharmigen), the neural progenitor cell marker nestin (1∶400; Millipore), the neuronal cell marker type III β-tubulin (1∶300; Promega, Madison, WI), and the neuronal cell marker neuron specific nuclear protein (NeuN) (1∶100; Millipore).
Techniques: Transfection, Labeling, Expressing, Quantitation Assay, Activity Assay, Standard Deviation