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Class I histone deacetylases HDAC1, 2 and 3 are histone decrotonylases

ABSTRACT: We characterize histone crotonylation in intestinal epithelium-derived cells through Mass spectrometry, ChIp-Seq and RNA-Seq approaches and show that this modification is removed by class I histone deacetylases, HDAC1, 2 and 3.

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE96035 | GEO | 2017/12/16

SECONDARY ACCESSION(S): PRJNA378641

REPOSITORIES: GEO

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Class I histone deacetylases HDAC1, 2 and 3 are histone decrotonylases

Project description:Class I histone deacetylases HDAC1, 2 and 3 are histone decrotonylases

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Inhibition of class I histone deacetylases 1 and 2 promotes urothelial carcinoma cell death by various mechanisms (HDAC siRNA knockdown)

Project description:Class I histone deacetylases HDAC1 and HDAC2 contribute to cell proliferation and are commonly upregulated in urothelial carcinoma (UC). To evaluate whether specific inhibition of HDAC1 and HDAC2 might serve as an appropriate therapy of UC we applied specific siRNA mediated double knockdown of HDAC1 and HDAC2 in the UCCs VM-CUB1 and UM-UC-3. HDAC1/2 double knockdown significantly reduced proliferation and clonogenicity of UC cells.

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Class I histone deacetylases (HDAC1-3) are histone lysine delactylases.

Project description:Lysine L-lactylation [K(L-la)] is a newly discovered histone mark stimulated under conditions of high glycolysis, such as the Warburg effect. K(L-la) is associated with functions that are different from the widely studied histone acetylation. While K(L-la) can be introduced by the acetyltransferase p300, histone delactylases enzymes remained unknown. Here, we report the systematic evaluation of zinc- and nicotinamide adenine dinucleotide–dependent histone deacetylases (HDACs) for their ability to cleave ε-N-L-lactyllysine marks. Our screens identified HDAC1–3 and SIRT1–3 as delactylases in vitro. HDAC1–3 show robust activity toward not only K(L-la) but also K(D-la) and diverse short-chain acyl modifications. We further confirmed the de-L-lactylase activity of HDACs 1 and 3 in cells. Together, these data suggest that histone lactylation is installed and removed by regulatory enzymes as opposed to spontaneous chemical reactivity. Our results therefore represent an important step toward full characterization of this pathway’s regulatory elements.

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Inhibition of class I histone deacetylases 1 and 2 promotes urothelial carcinoma cell death by various mechanisms (HDAC inhibitor treatments)

Project description:Preliminary manuscript abstract: Class I histone deacetylases HDAC1 and HDAC2 contribute to cell proliferation and are commonly upregulated in urothelial carcinoma (UC). To evaluate whether specific inhibition of HDAC1 and HDAC2 might serve as an appropriate therapy of UC we applied specific pharmacological inhibition of HDAC1 and HDAC2 with the two selective class I HDAC inhibitors Romidepsin and Givinostat. Treatment with the pan HDAC inhibitor SAHA served as an additional control. Romidepsin and Givinostat significantly reduced proliferation and clonogenicity of UC cells with minor effects on non-tumorigenic cells. Furthermore, compounds induced primarily S-phase disturbances and non-apoptotic cell death. Results of microarray analysis of HDAC inhibitor treated cells match with observed phenotype after pharmacological HDAC1 and HDAC2 inhibition in UC cells.

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Histone deacetylase 1 (HDAC1) complexes regulate both histone acetylation and crotonylation in vivo

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HDAC1/2/3 Are Major Histone Desuccinylase Critical for Promoter Desuccinylation [ChIP-seq]

Project description:Lysine succinylation is one of the major post-translational modifications occurred on histones and is believed to have significant roles in regulation of chromatin structure and function. Currently, histone desuccinylation is widely believed to be exerted by the members of SIRT family deacetylases. Here, we report that histone desuccinylation is in fact primarily catalyzed by the class I HDAC1/2/3. Inhibition or depletion of HDAC1/2/3 resulted in marked increase of global histone succinylation, whereas ectopic expression of HDAC1/2/3 but not their deacetylase inactive mutants downregulated global histone succinylation. We demonstrated that the class I HDAC1/2/3 complexes have robust histone desuccinylase activity in vitro. Genomic landscape analysis revealed that histone succinylation is highly enriched at gene promoters and inhibition of HDAC activity results in marked elevation of promoter histone succinylation. Furthermore, integrated analysis revealed that the promoter histone succinylation positively correlates with the transcriptional activity. Collectively, we demonstrate that the class I HDAC1/2/3 but not the SIRT family proteins are the major histone desuccinylases particularly important for promoter histone desuccinylation. Our study thus sheds new light on the role of histone succinylation in transcriptional regulation.

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HDAC1/2/3 Are Major Histone Desuccinylase Critical for Promoter Desuccinylation [RNA-seq]

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HDAC1/2 and CD4+ T cells

Project description:Dynamic changes in histone acetylation patterns are mediated by the activity of histone acetyltransfereases (HATs) and histone deacetylases (HDACs) and are key events in the epigenetic regulation of gene expression. The application of HDAC inhibitors revealed a variety of T cell functions controlled by reversible lysine acetylation and HDAC1, HDAC2, HDAC3, HDAC7 and HDAC9 have been implicated in regulating T cell development and function. Nevertheless, unique functions of individual HDAC members in T cells and specific T cell functions that are regulated by HDACs are still only poorly understood. We previously showed that T cell-specific loss of HDAC1 (using the Cd4Cre deleter strain) leads to enhanced allergic airway inflammation and increased Th2 cytokine production. Interestingly, late T cell development was not impaired in these mice. However, HDAC2 was up-regulated in the absence of HDAC1, thus we hypothesized compensatory pathways/function between these two closely related class I HDAC family members in T cells. To investigate redundant and non-redundant functions of HDAC1 and HDAC2, we generated mice with a conditional T cell-specific (using Cd4Cre) combined loss of HDAC1 and HDAC2. As part of our study, we determined and compared the transcriptome of peripheral wild-type and HDAC1/2-null CD4+ T cells. Since loss of HDAC1/HDAC2 during late T cell development led to the appearance of MHC class II-selected CD4+ helper T cells that expressed CD8 lineage genes such as Cd8a and Cd8b1, we also analyzed the transcriptome of HDAC1/2-null CD4+CD8+ T cells.

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