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• W1531585137 abstract "The alteration of chromatin through histone acetylation and deacetylation participates in the regulation of gene expression. We have investigated the effects of histone deacetylase inhibition on neuronal fate. We show that treatment of primary neurones with trichostatin A (TSA) or sodium butyrate (NaBu) induces typical features of apoptosis, a cell death that relies on specific genetic programmes. We have further explored the molecular mechanisms implicated in the TSA response and demonstrated that TSA-induced apoptosis is partly dependent on the activation of the transcription factor E2F-1, which has pro-apoptotic functions in these neurones. Furthermore, the increased e2f-1 transcriptional response is probably the result of mechanisms occurring through E2F-responsive elements. Histone acetylation also takes place at the e2f-1 promoter, but this modification is neither required nor by itself sufficient to induce increased transcription at the e2f-1 promoter. Activation might thus occur through acetylation of non-histone proteins binding this regulatory element. Finally, we show that TSA induces the transcription of E2F-dependent genes, such as its cell cycle target cyclin E, but also pro-apoptotic genes, such as Apaf1. Taken together, our results suggest that, in neuroprotective conditions, histone deacetylase activity allows a constitutive repression of the e2f-1 gene in mature neurones in order to ensure survival. Deregulation of this repression will ultimately lead to an E2F-dependent cell death." @default.
• W1531585137 created "2016-06-24" @default.
• W1531585137 creator A5004712759 @default.
• W1531585137 creator A5038093792 @default.
• W1531585137 creator A5046468115 @default.
• W1531585137 date "2003-01-31" @default.
• W1531585137 modified "2023-10-02" @default.
• W1531585137 title "Selective E2F-dependent gene transcription is controlled by histone deacetylase activity during neuronal apoptosis" @default.
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• W1531585137 doi "https://doi.org/10.1046/j.1471-4159.2003.01581.x" @default.
• W1531585137 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/12562525" @default.
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