Abstract
NeuroD, a basic helix-loop-helix transcription factor, is capable of converting embryonic epidermal cells into neuronal cells. However, whether histone deacetylases (HDACs) are involved in the autoregulation of neuroD or not is unclear. In this study, neuroD expression was found to be significantly increased in the all-trans retinoid acid-treated P19 cells. Meanwhile, neuroD could itself enhance its promoter activity and mRNA expression. By using specific inhibitors to histone modification enzymes, HDAC3 was identified to specifically augment the autoactivation of neuroD in P19 cells. The data suggest that the elevation of HDAC3 and neuroD in all-trans retinoid acid-treated cells exponentially increases the neuroD expression and mediates an early commitment of P19 cells for neuronal differentiation.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Basic Helix-Loop-Helix Transcription Factors / genetics
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Basic Helix-Loop-Helix Transcription Factors / metabolism*
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Carcinoma / pathology
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Cell Differentiation / drug effects
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Cell Line
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Chromatin Immunoprecipitation / methods
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Enzyme Inhibitors / pharmacology
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Gene Expression Regulation / drug effects
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Gene Expression Regulation / physiology*
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Histone Deacetylases / genetics
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Histone Deacetylases / physiology*
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Homeostasis / drug effects
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Homeostasis / genetics
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Humans
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Luciferases / genetics
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Luciferases / metabolism
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Mice
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Nerve Tissue Proteins / genetics
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Nerve Tissue Proteins / metabolism*
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RNA, Messenger / metabolism
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Transfection / methods
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Tretinoin / pharmacology
Substances
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Basic Helix-Loop-Helix Transcription Factors
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Enzyme Inhibitors
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Nerve Tissue Proteins
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RNA, Messenger
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Neurogenic differentiation factor 1
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Tretinoin
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Luciferases
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Histone Deacetylases
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histone deacetylase 3