title: 2,4-Dinitrophenol induces neural differentiation of murine embryonic stem cells.
abstract: 2,4-Dinitrophenol (DNP) is a neuroprotective compound previously shown to promote neuronal differentiation in a neuroblastoma cell line and neurite outgrowth in primary neurons. Here, we tested the hypothesis that DNP could induce neurogenesis in embryonic stem cells (ESCs). Murine ESCs, grown as embryoid bodies (EBs), were exposed to 20 μM DNP (or vehicle) for 4 days. Significant increases in the proportion of nestin- and β-tubulin III-positive cells were detected after EB exposure to DNP, accompanied by enhanced glial fibrillary acidic protein (GFAP), phosphorylated extracellular signal-regulated kinase (p-ERK) and ATP-linked oxygen consumption, thought to mediate DNP-induced neural differentiation. DNP further protected ESCs from cell death, as indicated by reduced caspase-3 positive cells, and increased proliferation. Cell migration from EBs was significantly higher in DNP-treated EBs, and migrating cells were positive for nestin, ß-tubulin III and MAP2, similar to that observed with retinoic acid (RA)-treated EBs. Compared to RA, however, DNP exerted a marked neuritogenic effect on differentiating ESCs, increasing the average length and number of neurites per cell. Results establish that DNP induces neural differentiation of ESCs, accompanied by cell proliferation, migration and neuritogenesis, suggesting that DNP may be a novel tool to induce neurogenesis in embryonic stem cells.
authors.affiliation: Institute of Medical Biochemistry, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21944-590, Brazil.
authors.forename: Léo
authors.initials: L
authors.lastname: Freitas-Correa
authors.forename: Mychael V
authors.initials: MV
authors.lastname: Lourenco
authors.forename: Mariana
authors.initials: M
authors.lastname: Acquarone
authors.forename: Rodrigo F Madeiro
authors.initials: RF
authors.lastname: da Costa
authors.forename: Antonio
authors.initials: A
authors.lastname: Galina
authors.forename: Stevens K
authors.initials: SK
authors.lastname: Rehen
authors.forename: Sergio T
authors.initials: ST
authors.lastname: Ferreira
mesh_terms: D019297:2,4-Dinitrophenol / Q000737:chemistry / Q000494:pharmacology*; D000818:Animals; D002454:Cell Differentiation; D002460:Cell Line; D002465:Cell Movement; D049109:Cell Proliferation; D058732:Embryoid Bodies / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D053595:Embryonic Stem Cells / Q000166:cytology / Q000187:drug effects*; D005904:Glial Fibrillary Acidic Protein; D051379:Mice; D019950:Mitogen-Activated Protein Kinase 1 / Q000378:metabolism; D048052:Mitogen-Activated Protein Kinase 3 / Q000378:metabolism; D009419:Nerve Tissue Proteins / Q000378:metabolism; D064231:Nestin / Q000378:metabolism; D055495:Neurogenesis / Q000187:drug effects*; D009474:Neurons / Q000166:cytology* / Q000378:metabolism; D010101:Oxygen Consumption; D014212:Tretinoin / Q000494:pharmacology; D014404:Tubulin / Q000378:metabolism
chemical_list: D005904:Glial Fibrillary Acidic Protein; D009419:Nerve Tissue Proteins; D064231:Nestin; D014404:Tubulin; C528900:glial fibrillary astrocytic protein, mouse; D014212:Tretinoin; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3; D019297:2,4-Dinitrophenol