1
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Sang C, Li X, Liu J, Chen Z, Xia M, Yu M, Yu W. Reversible acetylation of HDAC8 regulates cell cycle. EMBO Rep 2024:10.1038/s44319-024-00210-w. [PMID: 39043961 DOI: 10.1038/s44319-024-00210-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 05/28/2024] [Accepted: 07/05/2024] [Indexed: 07/25/2024] Open
Abstract
HDAC8, a member of class I HDACs, plays a pivotal role in cell cycle regulation by deacetylating the cohesin subunit SMC3. While cyclins and CDKs are well-established cell cycle regulators, our knowledge of other regulators remains limited. Here we reveal the acetylation of K202 in HDAC8 as a key cell cycle regulator responsive to stress. K202 acetylation in HDAC8, primarily catalyzed by Tip60, restricts HDAC8 activity, leading to increased SMC3 acetylation and cell cycle arrest. Furthermore, cells expressing the mutant form of HDAC8 mimicking K202 acetylation display significant alterations in gene expression, potentially linked to changes in 3D genome structure, including enhanced chromatid loop interactions. K202 acetylation impairs cell cycle progression by disrupting the expression of cell cycle-related genes and sister chromatid cohesion, resulting in G2/M phase arrest. These findings indicate the reversible acetylation of HDAC8 as a cell cycle regulator, expanding our understanding of stress-responsive cell cycle dynamics.
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Affiliation(s)
- Chaowei Sang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, 200438, Shanghai, China
| | - Xuedong Li
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, 200438, Shanghai, China
| | - Jingxuan Liu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, 200438, Shanghai, China
| | - Ziyin Chen
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, 200438, Shanghai, China
| | - Minhui Xia
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, 200438, Shanghai, China
| | - Miao Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, 200438, Shanghai, China
| | - Wei Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, 200438, Shanghai, China.
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2
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Lomeli C. S, Kristin B. A. Epigenetic regulation of craniofacial development and disease. Birth Defects Res 2024; 116:e2271. [PMID: 37964651 PMCID: PMC10872612 DOI: 10.1002/bdr2.2271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/13/2023] [Accepted: 10/24/2023] [Indexed: 11/16/2023]
Abstract
BACKGROUND The formation of the craniofacial complex relies on proper neural crest development. The gene regulatory networks (GRNs) and signaling pathways orchestrating this process have been extensively studied. These GRNs and signaling cascades are tightly regulated as alterations to any stage of neural crest development can lead to common congenital birth defects, including multiple syndromes affecting facial morphology as well as nonsyndromic facial defects, such as cleft lip with or without cleft palate. Epigenetic factors add a hierarchy to the regulation of transcriptional networks and influence the spatiotemporal activation or repression of specific gene regulatory cascades; however less is known about their exact mechanisms in controlling precise gene regulation. AIMS In this review, we discuss the role of epigenetic factors during neural crest development, specifically during craniofacial development and how compromised activities of these regulators contribute to congenital defects that affect the craniofacial complex.
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Affiliation(s)
- Shull Lomeli C.
- Department of Craniofacial Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Artinger Kristin B.
- Department of Diagnostic and Biological Sciences, University of Minnesota School of Dentistry, Minneapolis, MN, USA
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3
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Fontana A, Cursaro I, Carullo G, Gemma S, Butini S, Campiani G. A Therapeutic Perspective of HDAC8 in Different Diseases: An Overview of Selective Inhibitors. Int J Mol Sci 2022; 23:ijms231710014. [PMID: 36077415 PMCID: PMC9456347 DOI: 10.3390/ijms231710014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Histone deacetylases (HDACs) are epigenetic enzymes which participate in transcriptional repression and chromatin condensation mechanisms by removing the acetyl moiety from acetylated ε-amino group of histone lysines and other non-histone proteins. In recent years, HDAC8, a class I HDAC, has emerged as a promising target for different disorders, including X-linked intellectual disability, fibrotic diseases, cancer, and various neuropathological conditions. Selective HDAC8 targeting is required to limit side effects deriving from the treatment with pan-HDAC inhibitors (HDACis); thus, many endeavours have focused on the development of selective HDAC8is. In addition, polypharmacological approaches have been explored to achieve a synergistic action on multi-factorial diseases or to enhance the drug efficacy. In this frame, proteolysis-targeting chimeras (PROTACs) might be regarded as a dual-targeting approach for attaining HDAC8 proteasomal degradation. This review highlights the most relevant and recent advances relative to HDAC8 validation in various diseases, providing a snapshot of the current selective HDAC8is, with a focus on polyfunctional modulators.
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Affiliation(s)
- Anna Fontana
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Ilaria Cursaro
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Gabriele Carullo
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Sandra Gemma
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Stefania Butini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
- Correspondence: ; Tel.: +39-057-723-4161
| | - Giuseppe Campiani
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
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A Novel Intragenic Duplication in the HDAC8 Gene Underlying a Case of Cornelia de Lange Syndrome. Genes (Basel) 2022; 13:genes13081413. [PMID: 36011323 PMCID: PMC9408140 DOI: 10.3390/genes13081413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/03/2022] [Accepted: 08/06/2022] [Indexed: 11/16/2022] Open
Abstract
Cornelia de Lange syndrome (CdLS) is a multisystemic genetic disorder characterized by distinctive facial features, growth retardation, and intellectual disability, as well as various systemic conditions. It is caused by genetic variants in genes related to the cohesin complex. Single-nucleotide variations are the best-known genetic cause of CdLS; however, copy number variants (CNVs) clearly underlie a substantial proportion of cases of the syndrome. The NIPBL gene was thought to be the locus within which clinically relevant CNVs contributed to CdLS. However, in the last few years, pathogenic CNVs have been identified in other genes such as HDAC8, RAD21, and SMC1A. Here, we studied an affected girl presenting with a classic CdLS phenotype heterozygous for a de novo ~32 kbp intragenic duplication affecting exon 10 of HDAC8. Molecular analyses revealed an alteration in the physiological splicing that included a 96 bp insertion between exons 9 and 10 of the main transcript of HDAC8. The aberrant transcript was predicted to generate a truncated protein whose accessibility to the active center was restricted, showing reduced ease of substrate entry into the mutated enzyme. Lastly, we conclude that the duplication is responsible for the patient’s phenotype, highlighting the contribution of CNVs as a molecular cause underlying CdLS.
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Maia N, Nabais Sá MJ, Oliveira C, Santos F, Soares CA, Prior C, Tkachenko N, Santos R, de Brouwer APM, Jacome A, Porto B, Jorge P. Can the Synergic Contribution of Multigenic Variants Explain the Clinical and Cellular Phenotypes of a Neurodevelopmental Disorder? Genes (Basel) 2021; 13:genes13010078. [PMID: 35052418 PMCID: PMC8774836 DOI: 10.3390/genes13010078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/14/2021] [Accepted: 12/23/2021] [Indexed: 11/16/2022] Open
Abstract
We describe an infant female with a syndromic neurodevelopmental clinical phenotype and increased chromosome instability as cellular phenotype. Genotype characterization revealed heterozygous variants in genes directly or indirectly linked to DNA repair: a de novo X-linked HDAC8 pathogenic variant, a paternally inherited FANCG pathogenic variant and a maternally inherited BRCA2 variant of uncertain significance. The full spectrum of the phenotype cannot be explained by any of the heterozygous variants on their own; thus, a synergic contribution is proposed. Complementation studies showed that the FANCG gene from the Fanconi Anaemia/BRCA (FA/BRCA) DNA repair pathway was impaired, indicating that the variant in FANCG contributes to the cellular phenotype. The patient’s chromosome instability represents the first report where heterozygous variant(s) in the FA/BRCA pathway are implicated in the cellular phenotype. We propose that a multigenic contribution of heterozygous variants in HDAC8 and the FA/BRCA pathway might have a role in the phenotype of this neurodevelopmental disorder. The importance of these findings may have repercussion in the clinical management of other cases with a similar synergic contribution of heterozygous variants, allowing the establishment of new genotype–phenotype correlations and motivating the biochemical study of the underlying mechanisms.
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Affiliation(s)
- Nuno Maia
- Unidade de Genética Molecular, Centro de Genética Médica Jacinto de Magalhães (CGM), Centro Hospitalar Universitário do Porto (CHUPorto), 4099-028 Porto, Portugal; (N.M.); (F.S.); (R.S.)
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory for Integrative and Translational Research in Population Health (ITR), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (M.J.N.S.); (C.A.S.)
| | - Maria João Nabais Sá
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory for Integrative and Translational Research in Population Health (ITR), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (M.J.N.S.); (C.A.S.)
| | - Cláudia Oliveira
- Laboratório Citogenética, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4050-313 Porto, Portugal; (C.O.); (B.P.)
| | - Flávia Santos
- Unidade de Genética Molecular, Centro de Genética Médica Jacinto de Magalhães (CGM), Centro Hospitalar Universitário do Porto (CHUPorto), 4099-028 Porto, Portugal; (N.M.); (F.S.); (R.S.)
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory for Integrative and Translational Research in Population Health (ITR), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (M.J.N.S.); (C.A.S.)
| | - Célia Azevedo Soares
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory for Integrative and Translational Research in Population Health (ITR), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (M.J.N.S.); (C.A.S.)
- Serviço de Genética Médica, Centro de Genética Médica Doutor Jacinto Magalhães (CGM), Centro Hospitalar Universitário do Porto (CHUPorto), 4099-028 Porto, Portugal;
| | - Catarina Prior
- Unidade de Neurodesenvolvimento do Serviço de Pediatria do Centro Materno-Infantil do Norte (CMIN), Centro Hospitalar Universitário do Porto (CHUPorto), 4050-651 Porto, Portugal;
| | - Nataliya Tkachenko
- Serviço de Genética Médica, Centro de Genética Médica Doutor Jacinto Magalhães (CGM), Centro Hospitalar Universitário do Porto (CHUPorto), 4099-028 Porto, Portugal;
| | - Rosário Santos
- Unidade de Genética Molecular, Centro de Genética Médica Jacinto de Magalhães (CGM), Centro Hospitalar Universitário do Porto (CHUPorto), 4099-028 Porto, Portugal; (N.M.); (F.S.); (R.S.)
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory for Integrative and Translational Research in Population Health (ITR), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (M.J.N.S.); (C.A.S.)
| | - Arjan P. M. de Brouwer
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, 6525 GA Nijmegen, The Netherlands;
| | - Ariana Jacome
- Chromosome Instability and Dynamics Lab. (CID), Instituto de Inovação e Investigação (i3S), Universidade do Porto, 4200-135 Porto, Portugal;
| | - Beatriz Porto
- Laboratório Citogenética, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4050-313 Porto, Portugal; (C.O.); (B.P.)
| | - Paula Jorge
- Unidade de Genética Molecular, Centro de Genética Médica Jacinto de Magalhães (CGM), Centro Hospitalar Universitário do Porto (CHUPorto), 4099-028 Porto, Portugal; (N.M.); (F.S.); (R.S.)
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory for Integrative and Translational Research in Population Health (ITR), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (M.J.N.S.); (C.A.S.)
- Correspondence:
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6
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Mio C, Passon N, Fogolari F, Cesario C, Novelli A, Pittini C, Damante G. A novel de novo HDAC8 missense mutation causing Cornelia de Lange syndrome. Mol Genet Genomic Med 2021; 9:e1612. [PMID: 34342180 PMCID: PMC8457687 DOI: 10.1002/mgg3.1612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/12/2021] [Accepted: 01/18/2021] [Indexed: 12/21/2022] Open
Abstract
Background Cornelia de Lange syndrome (CdLS) is a rare and clinically variable syndrome characterized by growth impairment, multi‐organ anomalies, and a typical set of facial dysmorphisms. Here we describe a 2‐year‐old female child harboring a novel de novo missense variant in HDAC8, whose phenotypical score, according to the recent consensus on CdLS clinical diagnostic criteria, allowed the diagnosis of a non‐classic CdLS. Methods Clinical exome sequencing was performed on the trio, identifying a de novo heterozygous variant in HDAC8 (NM_018486; c. 356C>G p.Thr119Arg). Molecular modeling was performed to evaluate putative functional consequence of the HDAC8 protein. Results The variant HDAC8 c.356C>G is classified as pathogenic following the ACMG (American College of Medical Genetics and Genomics)/AMP (Association for Molecular Pathology) guidelines. By molecular modeling, we confirmed the deleterious effect of this variant, since the amino acid change compromises the conformational flexibility of the HDAC8 loop required for optimal catalytic function. Conclusion We described a novel Thr119Arg mutation in HDAC8 in a patient displaying the major phenotypic traits of the CdLS. Our results suggest that a modest change outside an active site is capable of triggering global structural changes that propagate through the protein scaffold to the catalytic site, creating de facto haploinsufficiency.
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Affiliation(s)
- Catia Mio
- Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Nadia Passon
- Institute of Medical Genetics, Academic Hospital of Udine, Udine, Italy
| | - Federico Fogolari
- Department of Mathematics, Computer Sciences and Physics (DMIF), University of Udine, Udine, Italy
| | - Claudia Cesario
- Laboratory of Medical Genetics, IRCCS Bambino Gesù Children Hospital, Rome, Italy
| | - Antonio Novelli
- Laboratory of Medical Genetics, IRCCS Bambino Gesù Children Hospital, Rome, Italy
| | - Carla Pittini
- Maternal and Child Health Department, Academic Hospital of Udine, Udine, Italy
| | - Giuseppe Damante
- Department of Medicine (DAME), University of Udine, Udine, Italy.,Institute of Medical Genetics, Academic Hospital of Udine, Udine, Italy
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7
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Shukla VK, Siemons L, Gervasio FL, Hansen DF. Aromatic side-chain flips orchestrate the conformational sampling of functional loops in human histone deacetylase 8. Chem Sci 2021; 12:9318-9327. [PMID: 34349901 PMCID: PMC8278956 DOI: 10.1039/d1sc01929e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 05/27/2021] [Indexed: 12/12/2022] Open
Abstract
Human histone deacetylase 8 (HDAC8) is a key hydrolase in gene regulation and an important drug-target. High-resolution structures of HDAC8 in complex with substrates or inhibitors are available, which have provided insights into the bound state of HDAC8 and its function. Here, using long all-atom unbiased molecular dynamics simulations and Markov state modelling, we show a strong correlation between the conformation of aromatic side chains near the active site and opening and closing of the surrounding functional loops of HDAC8. We also investigated two mutants known to allosterically downregulate the enzymatic activity of HDAC8. Based on experimental data, we hypothesise that I19S-HDAC8 is unable to release the product, whereas both product release and substrate binding are impaired in the S39E-HDAC8 mutant. The presented results deliver detailed insights into the functional dynamics of HDAC8 and provide a mechanism for the substantial downregulation caused by allosteric mutations, including a disease causing one.
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Affiliation(s)
- Vaibhav Kumar Shukla
- Department of Structural and Molecular Biology, Division of Biosciences, University College London London WC1E 6BT UK
| | - Lucas Siemons
- Department of Structural and Molecular Biology, Division of Biosciences, University College London London WC1E 6BT UK
| | - Francesco L Gervasio
- Department of Chemistry, University College London London WC1E 6BT UK
- Pharmaceutical Sciences, University of Geneva Geneva CH-1211 Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva Geneva CH-1211 Switzerland
| | - D Flemming Hansen
- Department of Structural and Molecular Biology, Division of Biosciences, University College London London WC1E 6BT UK
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8
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Mossink B, Negwer M, Schubert D, Nadif Kasri N. The emerging role of chromatin remodelers in neurodevelopmental disorders: a developmental perspective. Cell Mol Life Sci 2021; 78:2517-2563. [PMID: 33263776 PMCID: PMC8004494 DOI: 10.1007/s00018-020-03714-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 11/04/2020] [Accepted: 11/16/2020] [Indexed: 12/13/2022]
Abstract
Neurodevelopmental disorders (NDDs), including intellectual disability (ID) and autism spectrum disorders (ASD), are a large group of disorders in which early insults during brain development result in a wide and heterogeneous spectrum of clinical diagnoses. Mutations in genes coding for chromatin remodelers are overrepresented in NDD cohorts, pointing towards epigenetics as a convergent pathogenic pathway between these disorders. In this review we detail the role of NDD-associated chromatin remodelers during the developmental continuum of progenitor expansion, differentiation, cell-type specification, migration and maturation. We discuss how defects in chromatin remodelling during these early developmental time points compound over time and result in impaired brain circuit establishment. In particular, we focus on their role in the three largest cell populations: glutamatergic neurons, GABAergic neurons, and glia cells. An in-depth understanding of the spatiotemporal role of chromatin remodelers during neurodevelopment can contribute to the identification of molecular targets for treatment strategies.
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Affiliation(s)
- Britt Mossink
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, Geert Grooteplein 10, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
- Department of Cognitive Neuroscience, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Moritz Negwer
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, Geert Grooteplein 10, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
- Department of Cognitive Neuroscience, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Dirk Schubert
- Department of Cognitive Neuroscience, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Nael Nadif Kasri
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, Geert Grooteplein 10, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
- Department of Cognitive Neuroscience, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, 6500 HB, Nijmegen, The Netherlands.
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9
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Grazioli P, Parodi C, Mariani M, Bottai D, Di Fede E, Zulueta A, Avagliano L, Cereda A, Tenconi R, Wierzba J, Adami R, Iascone M, Ajmone PF, Vaccari T, Gervasini C, Selicorni A, Massa V. Lithium as a possible therapeutic strategy for Cornelia de Lange syndrome. Cell Death Dis 2021; 7:34. [PMID: 33597506 PMCID: PMC7889653 DOI: 10.1038/s41420-021-00414-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/28/2020] [Accepted: 01/17/2021] [Indexed: 01/31/2023]
Abstract
Cornelia de Lange Syndrome (CdLS) is a rare developmental disorder affecting a multitude of organs including the central nervous system, inducing a variable neurodevelopmental delay. CdLS malformations derive from the deregulation of developmental pathways, inclusive of the canonical WNT pathway. We have evaluated MRI anomalies and behavioral and neurological clinical manifestations in CdLS patients. Importantly, we observed in our cohort a significant association between behavioral disturbance and structural abnormalities in brain structures of hindbrain embryonic origin. Considering the cumulative evidence on the cohesin-WNT-hindbrain shaping cascade, we have explored possible ameliorative effects of chemical activation of the canonical WNT pathway with lithium chloride in different models: (I) Drosophila melanogaster CdLS model showing a significant rescue of mushroom bodies morphology in the adult flies; (II) mouse neural stem cells restoring physiological levels in proliferation rate and differentiation capabilities toward the neuronal lineage; (III) lymphoblastoid cell lines from CdLS patients and healthy donors restoring cellular proliferation rate and inducing the expression of CyclinD1. This work supports a role for WNT-pathway regulation of CdLS brain and behavioral abnormalities and a consistent phenotype rescue by lithium in experimental models.
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Affiliation(s)
- Paolo Grazioli
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Chiara Parodi
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | | | - Daniele Bottai
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy ,grid.4708.b0000 0004 1757 2822“Aldo Ravelli” Center for Neurotechnology and Experimental Brain Therapeutics, Università degli Studi di Milano, Milan, Italy
| | - Elisabetta Di Fede
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Aida Zulueta
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Laura Avagliano
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Anna Cereda
- Department of Pediatrics-ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Romano Tenconi
- grid.5608.b0000 0004 1757 3470Department of Pediatrics, University of Padova, Padova, Italy
| | - Jolanta Wierzba
- grid.11451.300000 0001 0531 3426Department of Pediatrics and Internal Medicine Nursing, Department of Rare Disorders, Medical University of Gdansk, Gdańsk, Poland
| | - Raffaella Adami
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Maria Iascone
- Department of Pediatrics-ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Paola Francesca Ajmone
- grid.414818.00000 0004 1757 8749Child and Adolescent Neuropsychiatric Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Thomas Vaccari
- grid.4708.b0000 0004 1757 2822Department of Biosciences, Università degli Studi di Milano, Milano, Italy
| | - Cristina Gervasini
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy ,grid.4708.b0000 0004 1757 2822“Aldo Ravelli” Center for Neurotechnology and Experimental Brain Therapeutics, Università degli Studi di Milano, Milan, Italy
| | | | - Valentina Massa
- grid.4708.b0000 0004 1757 2822Department of Health Sciences, Università degli Studi di Milano, Milan, Italy ,grid.4708.b0000 0004 1757 2822“Aldo Ravelli” Center for Neurotechnology and Experimental Brain Therapeutics, Università degli Studi di Milano, Milan, Italy
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10
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Werbeck ND, Shukla VK, Kunze MBA, Yalinca H, Pritchard RB, Siemons L, Mondal S, Greenwood SOR, Kirkpatrick J, Marson CM, Hansen DF. A distal regulatory region of a class I human histone deacetylase. Nat Commun 2020; 11:3841. [PMID: 32737323 PMCID: PMC7395746 DOI: 10.1038/s41467-020-17610-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 07/09/2020] [Indexed: 01/05/2023] Open
Abstract
Histone deacetylases (HDACs) are key enzymes in epigenetics and important drug targets in cancer biology. Whilst it has been established that HDACs regulate many cellular processes, far less is known about the regulation of these enzymes themselves. Here, we show that HDAC8 is allosterically regulated by shifts in populations between exchanging states. An inactive state is identified, which is stabilised by a range of mutations and resembles a sparsely-populated state in equilibrium with active HDAC8. Computational models show that the inactive and active states differ by small changes in a regulatory region that extends up to 28 Å from the active site. The regulatory allosteric region identified here in HDAC8 corresponds to regions in other class I HDACs known to bind regulators, thus suggesting a general mechanism. The presented results pave the way for the development of allosteric HDAC inhibitors and regulators to improve the therapy for several disease states.
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Affiliation(s)
- Nicolas D Werbeck
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
- Nuvisan ICB GmbH, Innovation Campus Berlin, Müllerstraße 178, 13353, Berlin, Germany
| | - Vaibhav Kumar Shukla
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
| | - Micha B A Kunze
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
| | - Havva Yalinca
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
| | - Ruth B Pritchard
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
| | - Lucas Siemons
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
| | - Somnath Mondal
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
| | - Simon O R Greenwood
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
- Department of Chemistry, University College London, London, WC1E 6BT, UK
| | - John Kirkpatrick
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK
| | - Charles M Marson
- Department of Chemistry, University College London, London, WC1E 6BT, UK
| | - D Flemming Hansen
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London, WC1E 6BT, UK.
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Liu M, Wang Y, Yang S, Wei H, Tuo M, Chang F, Wang Y. Single nucleotide polymorphism array analysis uncovers a large, novel duplication in Xq13.1 in a floppy infant syndrome patient. Int J Dev Neurosci 2018; 74:56-60. [PMID: 30217625 DOI: 10.1016/j.ijdevneu.2018.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 09/09/2018] [Accepted: 09/09/2018] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE To identify candidate genes for the clinical diagnosis of floppy infant syndrome (FIS) using single nucleotide polymorphism (SNP) array in a specific FIS family. METHODS SNP array analysis of the whole chromosome copy number was performed in the proband (III1). Multiple polymerase chain reaction (PCR) combined with denaturing high-performance liquid chromatography (DHPLC) was used to validate the array data. RESULTS A large 5.818182 Mb duplication (Xq13.1: 67987646-73805828), which encompasses 66 known genes, was found in III1. The start and end points of the duplication were confirmed with an SNP array. Duplicated genes with potential roles in central and/or peripheral nervous system development (HDAC8, PHKA1, TAF1, DLG3, KIF4A, IGBP1, PJA1, and SLC16A2) were confirmed by multiple PCR-DHPLC in III1. The patient's mother and grandmother carry duplications in these eight genes, but only on one X chromosome, while the patient's aunt does not carry any of the duplications. CONCLUSION Based on the location of the eight candidate genes in Xq13.1, the large duplication found by SNP array does indeed exist and is predicted to be both novel and pathogenic. Moreover, we recommend SNP array as the first option for genetic diagnosis of both large-scale and rare/complicated diseases, such as FIS.
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Affiliation(s)
- Min Liu
- Department of Neurology, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China.
| | - Yuhuan Wang
- Department of Neurology, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Sijia Yang
- Department of Thoracic Surgery, The First Affiliated Hospital of Zhejiang University, Hangzhou, China
| | - He Wei
- Department of Neurology, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Miao Tuo
- Department of Neurology, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Fei Chang
- Department of Neurology, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Yuhui Wang
- Department of Operating room, Dezhou municipal hospital, Dezhou, China
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