Contact: Mary Beth O'Leary
Caption: The c-Jun-mediated cell death pathway (marked by red nuclei that are positive for phospho-cjun) is activated in stem cell-derived motor neurons (green) exposed to trophic factor withdrawal (upper left panel). C-Jun activation and cell death are blocked by kenpaullone, an inhibitor GSK-3 and HGK (MAP4K4) kinases (lower right panel; kenpaullone structure superimposed).
Credit: Cell Stem Cell, Yang et al.
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